Photosensitive silver halide photographic material

FIELD OF THE INVENTION
The present invention relates to a photosensitive silver halide photographic material, more specifically to the photosensitive silver halide photographic material which comprises high sensitivity and can provide an image comprising high optical density and excellent graininess.
BACKGROUND OF THE INVENTION
Recently there have been increasing demands for photosensitive silver halide photographic material having better photographic characteristics such as high sensitivity, excellent graininess, and sufficiently high optical density.
In general, silver halide grains are prepared by a method comprising preparation process of silver halide seed grains followed by process of growing the seed grains, wherein water soluble silver salt solution and water soluble halide solution are supplied using jet method (for example, single jet method, double jet method). Said preparation of silver halide grains is described in U.S. Pat. No. 4,610,958, U.S. Pat. No. 2,996,287, U.S. Pat. No.3,785,777 and U.S. Pat. No.90386.
However, the photosensitive silver halide photographic material containing silver halide grains mentioned above, can't meet the above mentioned demands sufficiently.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a photosensitive silver halide photographic material comprising high sensitivity, and capable of providing an image having excellent graininess and sufficiently high optical density.
These and other objects are achieved in accordance with the present invention.
In this regard, the photosensitive silver the halide photographic material of the invention comprises at least one silver halide emulsion layer containing silver halide grains (1) having at least two kinds of halogens, wherein said silver halide grains (1) are grown to in a system in the presence of silver halide grains (2) coexisting with silver halide grains which are growing to the silver halide grains (1), for at least some portion of period that the silver halide grains are growing in the system, and comprising solubility product less than that of said growing silver halide grains.

BRIEF DESCRIPTION OF THE DRAWINGS
FIGS. 1-5 are electron micrographs of inventive grains. FIG. 6 is an electron micrograph of comparison grains. FIGS. 7 and 8 are graphic representations of the density vs. logE curve for inventive and comparison grains.

DETAILED DESCRIPTION OF THE INVENTION
The at least two kinds of halogens may distribute uniformly or ununiformly in the AgX(1).
Preferably, AgX(1) is the grains in which distribution of said halogens is not uniform, such as core/shell type or epitaxitial type silver halide grains, and core/shell type grains are more preferable.
Preferable composition of Agx (1) is AgBrCl, AgBrI or AgBrClI, and more preferably AgBrI.
It is preferable that the AgX(1) is contained in a ratio of not less than 30 mol %, more preferably not less than 60 mol % as the amount of AgX, in at least one of the emulsion layers constituting the photosensitive material. When the photosensitive material is of multilayer structure, at least one emulsion layer for which the AgX(1) should be contained is chosen, but it is preferable that AgX(1) is contained in all emulsion layers.
The characteristic of the present invention is to consume AgX(2) grains as an alternative for at least one portion of water soluble silver salt solution and water soluble halide solution (hereinafter referred to as the grain growth compositions) to form the AgX(1) grains.
The preparation process of AgX(1 ) is described below in detail.
One preparation process is that AgX seed grains are grown to AgX(1) by supply of water soluble silver salt solution and water soluble halide solution. Another preparation process is that without said seed grains, AgX nucleus is formed followed by growth of said nucleus to AgX(1) by supply of said two solution. The former process is preferable because reproduction of size of AgX grains formed is better.
AgX(2) is necessary to exist at latest by completion of growth to AgX(1) in the grain growth suspension (hereinafter referred to as mother suspension.).
In case of using AgX seed grains, said seed grains may be added to AgX(2), and AgX(2) may be added to said seed grains prior to and/or in the middle of adding of grain growth compositions in mother suspension.
In case of grain growth without the seed grains, preferably AgX(2) is added after AgX nucleation prior to and/or in the middle of adding of the grain growth compositions.
Each of AgX(2) and the grain growth composition may be added continuously, discontinuously or at a time.
Preferably AgX(2) and the grain growth compositions respectively are added to mother suspension by the multi jet method (for example, double jet method ) at an adaptive rate to grain growth under the controlled pH, pAg and temperature etc.
Each of AgX(2) and AgX seed grains may be prepared out of the grain growth suspension followed by addition to said suspension or may be prepared in mother suspension.
Water soluble silver solution used for forming AgX(2) is preferably an ammoniacal silver nitrate solution.
In case that AgX(1) is AgBrI, AgX(2) is preferably AgI or AgBrI of which iodide content is more than that of growing AgBrI and in case that AgX(1) is AgClBr, AgX(2) is preferably AgBr or AgClBr of which bromide content is more than that of growing AgClBr.
More preferably, in case that AgX(1) is AgBrI, AgX(2) is AgI.
AgBrI or AgBrClI is preferably used in this invention, and in such case, it is preferable that an entire amount of iodide used in grain growth is provided by AgX(2), but a portion of iodide may be supplied by water soluble iodide solution.
It is preferable that AgX (2) be highly monodispersible. Although they may not necessarily be very fine, their average grain size is preferably 0.001 to 0.7 .mu.m, more preferably, 0.3 to 0.005 .mu.m, still more preferebly, 0.1 to 0.01 .mu.m.
The seed emulsion particles can have any composition, various silver compounds can be used, e.g. silver chloride, silver bromide, silver chlorobromide, silver chloroiodide, silver bromoiodide, and silver bromochloroiodide.
In the AgX (1) preparation process, mother suspension temperature is preferably 10.degree. to 70.degree. C., more preferably 20.degree. to 60.degree. C.; pAg is preferably 6 to 11, more preferably 7.5 to 10.5; and pH is preferably 5 to 11, more preferably 7 to 11.
The substances other than gelatin, adsorptive to AgX grains, may be added in preparation of an AgX grains (including preparation of an AgX seed grains). The examples of the adsorptive substances which serve well for this purpose include sensitizing dyes and compounds or heavy metal ions used in the relevant industry as anti-fogging agents or stabilizers. The preceding adsorptive substances are described in the examples of Japanese Patent Publication Open to Public Inspection No. 7040/1987.
For inhibiting AgX emulsion fogging and improving pot life, it is preferable that at least one anti-fogging agent or stabilizer chosen from the preceding adsorptive substances be added in preparation of an Agx seed grains emulsion.
Among the anti-fogging agents and stabilizers, heterocyclic mercapto compounds and/or azaindene compounds are particularly preferable. The examples of more preferable heterocyclic mercapto compounds and azaindene compounds are described in detail in Japanese Patent Publication O.P.I. No. 41848/1988; those substances can be used for the present invention.
Although there is no limitation on an addition amount of the above-mentioned heterocyclic mercapto compounds and azaindene compounds, it is preferably 1.times.10.sup.-5 to 3.times.10.sup.-2, more preferably, 5.times.10.sup.-5 to 3.times.10.sup.-3 per mole of AgX. This amount depends on production conditions of AgX grains, AgX average grain size and a type of the preceding compounds.
A finished emulsion containing the AgX(1) grains with the needed properties is then desalinated by a known method after AgX grain formation. For desalination, gelatin coagulating agents used for desalination of AgX grains as AgX seed grains described in Japanese Patent Application Nos. 81373/1987 and 9047/1988 may be used. It is also possible to use a noodle washing method in which gelatin is gelated, or a coagulation method which utilizes inorganic salts comprising multivalent anions such as sodium sulfate, anionic surfactants or anionic polymers (e.g. polystyrene sulfate).
The AgX grains thus desalinated are then redispersed in gelatin to prepare an AgX emulsion.
There is no particular limitation on the halogen compositions of AgX(1); silver chloride, silver bromide and silver iodide can be used in any combination, as long as it meets the purpose. AgX(1) may be of uniform composition or of shell-layer type core/shell composition; AgX(1) of the present invention is efficient for a core-shell composition.
There is no particular limitation on an average grain size of AgX(1) grain, and it may vary by application, but it is preferably 0.1 to 3.0 .mu.m. Here, the average grain size means the length of one side of an AgX grain if it is in a cube form, or the length of one side of a cube assumed to have the volume equal to that of an AgX grain if it is in a non-cube form. When each grain size in this sense is ri and the total number of the measured grains is n, the average grain size .gamma. can be expressed by the equation. ##EQU1##
A large part of the AgX grains with high monodispersibility have an identical crystal phase, and thus have a narrow size distribution.
In a group of highly monodispersible grains, the value obtained by dividing a standard deviation in a grain size distribution by an average grain size (variation coefficient) is not more than 0.20.
The AgX emulsion of the present invention is desirable, since it broadens an exposure latitude of AgX photosensitive materials having at least one emulsion layer containing at least two AgX emulsions with substantially different sensitivities, as well as improves graininess and sharpness, when it is used as at least one of said two AgX emulsions.
For incorporating the preceding at least two silver halide emulsions with substantially different sensitivities, it is possible to mix two or more silver halide emulsions with different average grain sizes. Two or more emulsions with different sensitivities prepared by varying an addition amount of chemical sensitizer or spectrally sensitizing dye may also be mixed. It is also possible to use the method in which two or more emulsions with different amounts of desensitizing agent are mixed, and the method in which two or more AgX seed grain emulsions with different amounts of desensitizing are mixed and grown.
The requirement of "substantially different sensitivities" in the present invention is satisfied by the condition that at least two emulsions have different sensitivities; it is preferable that at least two emulsions have difference of not less than 0.2 as expressed in logE value on a characteristic curve, and difference of 0.4 to 2.0 is more preferable.
Exposure latitude relating to the present invention is the range of light acceptance in which significantly different exposure effects are observed.
The possible desensitizing agents are arbitrarily selected from various agents such as metal ions, antifoggants, stabilizers and desensitizing dyes; however, for desensitizing, a method of metal ion doping is preferable.
The examples of metal ions used for the doping are metal ions such as Cd, Zn, Pb, Fe, Tl, Ru, Rh, Bi, Ir, Au, Os, Os, and Pd. These types of metal ions are preferably used, for example, in the form of halogen complex salt; the preferred pH level in the Agx suspension system in the course of doping is not higher than 5.
The preferred amount of metal ions used for doping varies depending upon the type of metal ions, size of silver halide grains, position of doping with metal ions, and intended sensitivity. However the preferred amount is 10.sup.-17 to 10.sup.-2 or, in particular, 10.sup.-16 to 10 .sup.-4 mol per mol Agx. If such metal ions are rhodium ions, the preferred amount is 10.sup.-14 to 10.sup.-2 mol, in particular, 10.sup.-11 to 10.sup.-4 mol per mol Agx.
By selecting per Ag grains, a kind of doping metal, and a position an amount of metal ions used for doping, each Agx grain is endowed with different sensitivity potential.
An amount of metal ions used for doping not more than 10.sup.-2 mol/Agx mol does not significantly affect the growth of silver halide grains. Accordingly, it is possible under identical conditions for growing grains, to prepare Agx grains exhibiting a narrow size distribution.
Each of the respective Agx grain respectively undergone doping under different conditions can be subjected to treatment that allows these grains to be industrially applicable, thereby these grains are mixed together at a specific mixing ratio into a same batch, that is chemically sensitized. The respective Agx grains are sensitized depending on their unique sensitivity potential, whereby a resultant emulsion is endowed with intended latitude based on the sensitivities of the grains and on a mixing ratio between the grains.
According to the invention, in addition to the use of the previously mentioned metal ion doping technique, a compound known in the art as antifoggant, stabilizer or desensitizing dye may be used in order to prepare the Agx grains of different sensitivity potentials. Such Agx grains are mixed at a specific mixing ratio in compliance with the intended exposure latitude.
The examples of the preceding anti-fogging agents and stabilizers include azoles such as benzthiazolium salts, indazoles, triazoles, benztriazoles, benzimidazoles, heterocyclic mercapto compounds such as mercaptotetrazoles, mercaptothiazoles, mercaptothiadiazoles, mercaptobenzthiazols mercaptobenzimidazoles, mercaptopyrimidine, azaindenes such as tetrazaindenes, pentazaindenes, nucleic acid decomposition products such as adenine, guanine, benzenethiosulfonic acids, and thioke to compounds.
The examples of the spectral desensitizing dyes include cyanine dyes, merocyanine dyes, complex cyanine dyes, complex merocyanine dyes, holopolar cyanine dyes, hemicyanine dyes, styryl dyes, and hemioxol dyes.
The emulsion of the present invention is chemically sensitized by a conventional method. It is possible to use singly or in combination a sulfur sensitization method using a sulfur compound capable of reacting with silver ions or using active gelatin, a selenium sensitization method using a selenium compound, a reduction sensitization method using a reducing substance, and a noble metal sensitization method using a compound of gold or another noble metal.
In the present invention, chalcogen sensitizers, for instance, can be used as a chemical sensitizer; sulfur sensitizers and selenium sensitizers are particularly preferable.
The examples of sulfur sensitizers include thiosulfates, allyl thiocarbazide, thiourea, allyl isothiocyanate, cystine, p-toluenethiosulfonate, and rhodanine. It is also possible to use the sulfur sensitizers described in U.S. Pat. Nos. 1,574,944, 2,410,689, 2,278,947, 2,728,668, 3,501,313, and 3,656,955; West German OLS Patent No. 1,422,869; Japanese Patent Publication Open to Public Inspection Nos. 24937/1981 and 45016/1980, for instance.
The amount of the sulfur sensitizer added may vary over a fairly wide range depending on various conditions such as pH, temperature and silver halide grain size, but, as a standard, it is preferably about 10.sup.-7 to 10.sup.-1 mole per mole of silver halide.
The examples of selenium sensitizers include aliphatic isoselenocyanates such as allyl isoselenocyanate; selenoureas; selenoketones; selenoamides; salts and esters of selenocarboxylic acids; selenophosphates; and selenides such as diethyl selenide and diethyl diselenide. The examples thereof are described in U.S. Pat. Nos. 1,574,944, 1,602,592, and 1,623,499.
Reduction sensitization can also be applied in combination. Reducing agents include stannous chloride, thiourea dioxide, hydrazine and polyamine.
It is also possible to use compounds of noble metals other than gold, e.g. palladium compounds.
It is preferable that the AgX grains of the present invention contain a gold compound. Gold compounds which can be preferably used for the present invention include a wide variety of compounds of monovalent or trivalent gold. The typical examples include potassium chloroaurate, auric trichloride, potassium iodoaurate, tetracyanoauric azide, ammonium aurothiocyanate, pyridyltrichlorogold, gold sulfide, and gold selenide.
The gold compounds may be used in such manner that the AgX grains are sensitized, or in such manner that it does not substantially contribute to sensitization.
The amount of the gold compound added varies depending on various conditions, but, as a standard, it is 10.sup.-8 to 10.sup.-1 mole, preferably 10.sup.-7 to 10.sup.-2 mole per mole of silver halide. These compounds can be added in any of the processes of AgX grain formation, physical aging and chemical aging, or after completion of chemical aging.
An emulsion of the present invention can be spectrally sensitized for a desired wavelength range by means of sensitizing dyes, which may be used singly or in combination of two or more sensitizers.
The dyes which have no spectral sensitizing function or the supersensitizers, which virtually do not absorb visible light, and can strengthen a sensitizing function of a sensitizing dye may be incorporated into an emulsion together with the sensitizing dyes.
The emulsion of the present invention spectrally sensitized with at least one sensitizing dye selected from the group of the sensitizing dyes represented by Formula [A] shown below, improves a photosensitive AgX photographic material in sensitizing dye adsorption, sensitivity and provides an image with excellent graininess. ##STR1## wherein D.sup.p and D.sup.q independently represent an electron-donative basic heterocyclic group; L.sup.a represents a conjugated linear linkage group; X represents an acid anion; s represents an integer of 0 or 1.
Of the sensitizing dyes represented by the above Formula [A], the cyanine dyes represented by Formula [I] or [II] are preferable for the present invention. ##STR2## Wherein, Z.sub.1, Z.sub.2, Z.sub.3, and Z.sub.4 independently represent the group of the atoms necessary to form a 5- or 6-membered nitrogen containing heterocyclic ring; L.sub.1, L.sub.2, L.sub.3, L.sub.4, L.sub.5, L.sub.6, L.sub.7, L.sub.8, L.sub.9, and L10 independently represent a methine group; Y represents an oxygen atom, a sulfur atom, a selenium atom, or --N--R.sub.7 group; R.sub.1, R.sub.2, R.sub.3, and R.sub.5 independently represents an alkyl group; R.sub.4 and R.sub.7 independently represent an alkyl group, an alicyclic group, a heterocyclic group, or an aryl group; X.sub.1.sup..crclbar. and X.sub.2.sup..crclbar. independently represent an acid anion; k.sub.1, k.sub.2, l.sub.1, l.sub.2, l.sub.3, and l.sub.4 independently represent the integer of 0 or 1; m.sub.1, m.sub.2, n.sub.1, and n.sub.2 independently represent the integer of 0 to 2, provided that m.sub.2 and n.sub.2 do not make more than 2.
A heterocyclic ring formed by Z.sub.1, Z.sub.2, Z.sub.3 or Z.sub.4 is a 5- or 6-membered heterocyclic ring usually composing cyanine dyes and includes a condensed ring with an aromatic ring such as a benzene ring or a naphthalene ring. That is, said heterocyclic ring includes cyanine heterocycle nuclei which comprises, for example, a thiazole ring, a selenazole ring, an oxazole ring, a tetrazole ring, a pyridine ring, a pyrroline ring an imidazole ring, an oxazoline ring, a thiazoline ring, an isoxazole ring, a 1, 3, 4-thiadizole ring, a thienothiazole ring, an imidazoquinoxaline ring, an imidazoquinoline ring, a pyrrolopyridine ring, a pyrrolopyrazine ring, a pyridopyridine ring or condensed ring thereof, each substituted or not substituted. The examples include a thiazole series such as thiazole, 4-methylthiazole, 4-phenylthiazole, 5-methylthiazole, 5-phenylthiazole, 4,5-dimethylthiazole, 4,5-diphenylthiazole, benzothiazole, 5-fluorobenzothiazole, 5-chlorobenzothiazole, 6-chlorobenzothiazole, 5-methylbenzothiazole, 6-methylbenzothiazole, 5-bromobenzothiazole, 5-carboxybenzothiazole, 5-ethoxycarbonylbenxothiazole, 5-hydroxybenzothiazole, 5-phenylbenzothiazole, 6-phenylbenzothiazole, 5-methoxybenzothiazole, 6-methoxybenzothiazole, 5-iodobenzothiazole, 6-ethoxybenzothiazole, tetrahydrobenzothiazole, 5,6-dimethylbenzothiazole, 5,6-dimethoxybenzothiazole, 5,6-dioxymethylenebenzothiazole, 6-ethoxy-5-methylbenzothiazole, 5-phenethylbenzothiazole, naphtho[1,2-d]thiazole, naphtho[2,1-d]thiazole, naphtho[2,3-d]thiazole, 5-methoxynaphtho[1,2-d]thiazole, 8-methoxynaphtho[2,1-d]thiazole, 7-methoxynaphtho[2,1-d]thiazole, 5-methoxythionaphtheno[6,7-d]thiazole, 8,9-dihydronaphtho[1,2-d]thiazole, and 4,5-dihydronaphtho[2,1-d]thiazole); an oxazole series such as 4-methyloxazole, 5-methyloxazole, 4-phenyloxazole, 4,5-dimethyloxazole, 5-phenyloxazole, 5,6-diphenyloxazole, benzoxazole, 5-chlorobenzoxazole, 5-methylbenzoxazole, 5-phenylbenzoxazole, 6-methylbenzoxazole, 5,6-dimethylbenzoxazole, 5-methoxybenzoxazole 5-ethoxybenzoxazole; 5-phenethylbenzoxazole, 5-hydroxybenzoxazole, 5-ethoxycarbonylbenzoxazole; 5-bromobenzoxazole, 5-methyl-6-chlorobenzoxazole, naphtho[1,2-d]oxazole, naphtho[2,1-d]oxazole, and naphtho[2,3-d]oxazole, a selenazole series such as 4-methylselenazole; 4-phenylselenazole; benzoselenazole; 5-chlorobenzoselenazole, 5-methoxybenzoselenazole, 5-methylbenzoselenazole, tetrahydrobenzoselenazole, naphtho[1,2-d]selenazole, and naphtho[2,1-d]selenazole; tellurazole series such as 4-phenyltellurazole, 4-methyltellurazole, benzotellurazole, 5-methylbenzotellurazole, 5-methoxybenzotellurazole, 5,6-dimethylbenzotellurazole, naphtho[2,1-d]tellurazole, and naphtho[1,2-d]tellurazole; a pyridine series such as 2-pyridine, 5-methyl-2-pyridine, 4-pyridine, and 3-methyl-4-pyridine; a quinoline series such as 2-quinoline, 6-methyl-2-quinoline, 5-ethyl-2-quinoline, 6-chloro-2-quinoline, 8-chloro-2-quinoline, 6-methoxy-2-quinoline, 8-ethoxy-2-quinoline, 6-methyl-2-quinoline, 8-fluoro-2-quinoline, 6-dimethylamino-2-quinoline, 4-quinoline, and 6-methoxy-4-quinoline, 7-methyl-4-quinoline, 8-chloro-4-quinoline; a 3,3-dialkylindolenine series such as 3,3-dimethylindolenine, 3,3,5-trimethylindolenine, 3,3-dimethyl-5 -(dimethylamino)indolenine, and 3,3-diethylindolenine; an imidazole series such as imidazole, 1-(cyclo)alkylimidazole, 1-(cyclo)alkyl-4-phenylimidazole; 1-(cyclo)alkyl-4,5-dimethylimidazole, 1-(cyclo)alkyl-4,5-dimethylimidazole, 1-(cyclo)alkylbenzimidazole, 1-phenyl-5,6-dichlorobenzimidazole, 1-(cyclo)alkyl-5-cyanobenzimidazole, 1-(cyclo)alkyl-5-chlorobenzimidazole, 1-(cyclo)alkyl-5,6-dichlorobenzimidazole, 1-(cyclo)alkyl-5-chloro-6-cyanobenzimidazole, 1-(cyclo)alkyl-5-trifluoromethylbenzimidazole, 1-(cyclo)alkyl-5-methylsulfonylbenzimidazole, 1-(cyclo)alkyl-5-methoxycarbonylbenzimidazole, 1-(cyclo)alkyl-5-acetylbenzimidazole, 1-(cyclo)alkyl-5-(N,N-dimethylamino)sulfonylbenzimidazole, 1-(cyclo)alkylnaphtho[1,2-d]imidazole, 1-(cyclo)alkylnaphtho[2,1-d]imidazole, and 1-(cyclo)alkylnaptho[2,3-d]imidazole; an oxazoline series such as oxazoline, and 4,4-dimethyloxazoline; a thiazoline series such as thiazoline, and 4-methylthiazoline, an isoxazole series such as isoxazole, benzisoxazole, 5-chlorobenzisoxazole, 6-methylbenzisoxazole, 7-methylbenzoxazole, 6-methoxybenzoxazole, and 7-methoxybenzisoxazole); a 1,3,4-thiadiazole series such as 5-methyl-1,3,4-thiadiazole, and 5-methylthio-1,3,4-thiadiazole; a thienothiazole series such as thieno[2,3-d]thiazole, thieno[3,2-d]thiazole, thieno[2,3-e]benzothiazole, thieno[3,2-e]benzothiazole, and thiazolo[4,5-b]benzothiophene; a tetrazole series such as 1-(cyclo)alkyltetrazole; an imidazoquinoxaline series such as 1-(cyclo)alkyl-imidazo[4,5-b]quinoxaline; 6,7-dichloro-l-(cyclo)alkyl-imidazo[4,5-b]quinoxaline, and 6-chloro-l-aryl-imidazo[4,5-b]quinoxaline), an imidazoquinoline series such as 1-(cyclo)alkyl-imidazo[4,5-b]quinoline, and 6,7-dichloro-1-(cyclo)alkylimidazo[4,5-b]quinoline; a pyrrolopyridine series such as 3,3-dialkyl-3H-pyrrolo[2,3-b]pyridine; a pyrrolopyrazine series such as pyrrolo-[2,3-b]pyrazine; and a pyridopyridine series such as pyrido[2,3-b]pyridine. The preceding 1-(cyclo)alkyl-groups are preferably the alkyl groups or cycloalkyl group with a carbon number of 1 to 10 (not including the carbon atoms of the substituents), and also include the alkyl groups or cycloalkyl groups substituted with an alkoxy group having a carbon number of 1 to 6, an alkoxycarbonyl group having an alkoxy group with a carbon number of 1 to 4, a carboxy group, a carbamoyl group, a cyano group, a halogen atom, a hydroxy group, a sulfo group, a phenyl group, including substituted phenyl group, a vinyl group, etc.; the examples of the 1-(cyclo)alkyl include methyl group, ethyl group, cyclohexyl group, butyl group, decyl group, 2-methoxyethyl group, 3-butoxypropyl group, 2-hydroxy-ethoxyethyl group, ethoxycarbonylmethyl group, carboxymethyl group, 2-carboxyethyl group, 2-cyanoethyl group, 2-carbamoylethyl group, 2-hydroxyethyl group, 2-fluoroethyl group, 2,2,2-trifluoroethyl group, 2-sulfoethyl group, 3-sulfopropyl group, 4-sulfobutyl group, phenethyl group, benzyl group, sulfophenethyl group, carboxybenzyl group, and allyl group.
The methine group represented by L.sub.1, L.sub.2, L.sub.3, L.sub.4, L.sub.5, L.sub.6, L.sub.7, L.sub.8, L.sub.9, and L.sub.10, include substituted methine group. The examples of the substituents include a lower alkyl groups having 1 to 6 carbon atoms (e.g. methyl group, ethyl group, propyl group, isobutyl group), an aryl group (e.g. phenyl group, p-tolyl group, p-chlorophenyl group), an alkoxy group having 1 to 4 carbon atoms (e.g. methoxy group, ethoxy group), an aryloxy group (e.g. phenoxy group), an aralkyl group (e.g. benzyl group, phenetyl group), a heterocyclic group (e.g. thienyl group, furyl group), a substituted amino group (e.g. dimethyl amino group, tetramethylenamino group, anilino group), an alkylthio group (e.g. methylthio group), and an acid nuclei groups (e.g. malononitrile, alkylsulfonylacetonitrile, cyanomethylbenzofuranyl ketone or cyanomethylphenyl ketone, 2-pyrrazolin-5-one, pyrrazolidine-3,5-dione, imidazolin-5-one, hydantoin, 2- or 4-thiohydantoin, 2-iminoxazolin-4-one, 2-oxazoline-5-one, 2-thioxazolidine-2,4-dione, isoxazolin-5-one, 2-thiazoline-4-one, thiazolidine-4-one, thiazolidine-2,4-dione, rhodanine, thiazolidine-2,4-dithione, isorhodanine, indane-1,3-dione, thiophene-3-one, thiophene-3-1,1-dioxide, indolin-2-one, indolin-3-one, indazolin-3-one, 2-oxoindazolinium, 3-oxoindazolinium, 5,7-dioxo-6,7-dihydrothiazolo[3,2-a]pyrimidine, cyclohexane-1,3-dione, 3,4-dihydroisoquinoline-4-one, 1,3-dioxane-4,6-dione, barbituric acid, 2-thiobarbituric acid, chroman-2,4-dione, indazolin-2-one, and pyrido[1,2-a]pyrimidine-l,3-dione). The substituents of the methine groups may be combined to form a 4- to 6-membered ring (e.g. 2-hydroxy-4- oxocyclobutene ring, cyclopentene ring, 3,3-dimethylcyclohexene).
The alkyl groups for each of R.sub.1, R.sub.2, R.sub.3 and R.sub.5 include substituted alkyl groups. The preferred alkyl group is an alkyl groups having 1 to 8 carbon atoms (e.g. methyl group, ethyl group, butyl group, isobutyl group), and the examples of the substituent include an alkoxy group, an alkoxycarbonyl group, an aryl group, a hydroxy group, a cyano group, a vinyl group, a halogen atom, a carbamoyl group, a sulfamoyl group, a carboxy group, a sulfo group, and a sulfato group.
The alkyl groups for each of R.sub.4 and R.sub.7 include substituted alkyl groups and the preferred alkyl groups is an alkyl group having 1 to 6 carbon atoms (e.g. methyl group, ethyl group, propyl group). The examples of the substituent include an alkoxy group, an alkylthio group, an aryloxy group, an aryl group, a hydroxy group, a cyano group, a vinyl group, a halogen atom, a carbamoyl group, a sulfamoyl group, a sulfonyl group, an alkoxycarbonyl group, and a carboxy group.
The alicyclic groups for each of R.sub.4 and R.sub.7 are preferably 5- or 6-membered alicyclic groups (e.g. cyclopentyl group, cyclohexyl group) and include substituted alicyclic group.
The heterocyclic group and the aryl group represented by R4 and R.sub.7 respectively include the substituted heterocyclic group and the substituted aryl group.
The examples of the heterocyclic group include a pyridyl group (e.g. a 2-pyridyl group, 3-pyridyl group, 4-pyridyl group) and a 2-thiazolyl group; the examples of the aryl group include a phenyl group, a 2-naphthyl group (e.g. p-tolyl group, p-chlorophenyl group, p-carboxyphenyl group).
The acid anion represented by X.sub.1.sup..crclbar. and X.sub.2.sup..crclbar. may be any acid residue; the examples include ethyl sulfate, methyl sulfate, p-toluenesulfonate, benzenesulfonate, thiocyanate, chloride, bromide, iodide, perchlorate, and perfluoroborate. When a dye forms an intramolecular salt, k.sub.1 and k.sub.2 each is zero.
Of the compounds represented by Formula [I] or [II], those represented by Formula [Ia] through [Ie] or [IIa] are particularly preferable; ##STR3## Wherein Z.sub.1, Z.sub.2, Z.sub.3, Y, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.7, X.sub.1, X.sub.2, l.sub.1, l.sub.2, l.sub.3, k.sub.1, and k.sub.2 represent the same groups and numbers as those defined in Formula [I] and [II].
Y.sub.1 and Y.sub.2 independently represent an oxygen atom, a sulfur atom, a selenium atom, tellurium atom, or --N--R.sub.7 group; Y.sub.3 and Y.sub.4 independently represent an oxygen atom, a sulfur atom, a selenium atom, or a tellurium atom.
V.sub.1, V.sub.2, V.sub.3, V.sub.4, V.sub.5, and V.sub.6 independently represent a hydrogen atom, an alkyl group (e.g. methyl group, ethyl group, trifluoromethyl group), an alkoxy group (e.g. methoxy group, ethoxy group), a halogen atom (e.g. fluorine, chlorine, bromine), a phenyl group, a hydroxy group, a cyano group, an alkoxycarbonyl group (e.g. methoxycarbonyl group, butoxycarbonyl group), a carbamoyl group (e.g. carbamoyl group, N,N-dimethylaminocarbamoyl group), a sulfamoyl group (e.g. sulfamoyl group, N,N-pentamethylenaminosulfonyl group), or a sulfonyl group (e.g. methanesulfonyl group; benzenesulfonyl group); V.sub.1 and V.sub.2, V.sub.2 and V.sub.3, V.sub.4 and V.sub.5, and V.sub.5 and V.sub.6 may be combined each other to form, e.g. a benzene ring, a cyclohexene ring or a thiophene ring;
W.sub.1, W.sub.2, W.sub.3, and W.sub.4 independently represent a hydrogen atom, an alkyl group (e.g. methyl group, ethyl group), or a phenyl group and W1 and W2, and/or W3 and W4 can be combined each other to form a ring which includes substituted ring. The ring formed by combining W.sub.1 and W.sub.2 and/or W.sub.3 and W.sub.4 each other is a benzene ring, a cyclohexene ring, a thiophene ring, or a naphthalene ring, which may be substituted by, for example, a halogen atom (e.g. fluorine, chlorine, bromine), an alkyl group (e.g. methyl group, a trilfuoromethyl group, ethyl group), an alkoxy group (e.g. methoxy group, ethoxy group), a phenyl group, a cyano group, an alkoxycarbonyl group (e.g. methoxycarbonyl group, butoxycarbonyl group), a carbamoyl group (e.g. carbamoyl group, N,N-dimethylaminocarbamoyl group), a sulfonyl group (e.g. methanesulfonyl group, benzenesulfonyl group), and a sulfamoyl group (e.g. sulfamoyl group, N,N-dimethylaminosulfonyl group);
R.sub.8 represents a hydrogen atom, an alkyl group (e.g. methyl group, ethyl group, propyl group, n-butyl group, an aralkyl group such as benzyl group), an aryl group (e.g. phenyl group, p-tolyl group), a heterocyclic group (e.g. 2-furyl group, 2-thienyl group), or an acid nucleus group (e.g. 2,4,6 triketohexahydropyrimidine derivatives, pyrazolone derivatives, 2-thio-2,4,6-triketohexapyrimidine derivatives, hydantoin derivatives, indandione derivatives, thianaphthenone derivatives, oxazolone derivatives);
R.sub.9 represents a hydrogen atom, an alkyl group (e.g. methyl group, ethyl group, butyl group), an alkoxy group (e.g. methoxy group, ethoxy group), or an aryloxy group (e.g. phenoxy group); R.sub.10 represents an alkyl group (e.g. methyl group, ethyl group), an alkoxy group (e.g. a lower akkoxy group such as methoxy group, ethoxy group), or aphenyl group.
The examples of the sensitizing dye of the present invention are given below, but these are not to be construed as limitations in the present invention. ##STR4##
The sensitizing dyes represented by Formula [A] of the present invention can easily be synthesized by the methods described in, for example, the Journal of the American Chemical Society, 67, 1875-1899 (1945), "Heterocyclic Compounds-Cyanine Dyes and Related Compounds", F. M. Hamer, published by Inter Science Publishers (1964), U.S. Pat. Nos. 3,483,196, 3,541,089, 3,598,595, 3,598,596, 3,632,808, 3,757,663, and Japanese Patent Publication Open to Public Inspection No. 78445/1985.
The preceding spectral sensitizing dye is preferably used at a ratio of 1.times.10.sup.-6 to 1.times.10.sup.-2 mole, more preferably 5.times.10.sup.-6 to 1.times.10.sup.-3 mole per mole of silver halide. The spectral sensitizing dyes described above can be added to a silver halide emulsion by various methods. The methods include a protonization dissolution method described in Japanese Patent Publication Open to Public Inspection Nos. 80826/1975 and 80827/1975, a method in which a dye is dispersed in the presence of a surfactant, described in Japanese Patent Publication Open to Public Inspection Nos. 44895/1974 and 11419/1975, a method in which a dye is added in dispersion in hydrophilic medium, described in U.S. Pat. Nos. 3,676,147, 3,469,987, 4,247,627, 53-102733, and 53-137131, and a method in which a dye is added in solid solution, described in Democratic Republic of Germany Patent No. 143,324. It is also possible to use a method described in Democratic Republic of Germany Patent No. 21,802, Japanese Patent Examined Publication No. 40659/1975, Japanese Patent Publication Open to Public Inspection No. 148035/1984, etc., in which a dye is dissolved in at least one water-soluble solvent capable of dissolving the dye, selected from the group comprising of water, methanol, ethanol, propylalcohol, acetone, fluorinated alcohol, and dimethylformamide, and then added to an emulsion. It may be added at any stage of emulsion preparation, but it is Preferable to add in chemical aging or after that.
The sensitizing dye described above can be used in combination of various dyes having a supersensitizing function.
Furthermore, the sensitizing dye can be used in combination with other dyes such as hemicyanine dyes, styryl dyes and benzilidene dyes.
The AgX emulsion of the present invention can be applied to black-and-white photosensitive silver halide photographic material (e.g. X-ray film, lith type photo-sensitive material, black-and-white negative film) and color photographic material (e.g. color negative film, color reversal film, color paper). It can also be applied to diffusion transfer photosensitive material (e.g. color diffusion transfer component, silver salt diffusion transfer component) and heat development photosensitive material (black-and-white, color).
In regard of multicolor photosensitive AgX photographic material, it usually comprises a support provided thereon the blue-sensitive, green-sensitive and red-sensitive AgX emulsion layers respectively containing yellow, magenta and cyan couplers, and a non-photosensitive layer as needed, each having a prescribed number of layers in prescribed layering order, but the number of layers and the layering order are changeable according to key performance and application.
With regard to a multicolor photosensitive AgX photographic material of the present invention, at least one, or preferably all, of the blue-sensitive, green-sensitive and red sensitive layer is composed of a single layer comprising an AgX emulsion of the present invention, whereby it can provide a color image with a higher maximum density and excellent graininess and sharpness.
In a multicolor photosensitive silver halide photographic material, a non-photosensitive hydrophilic colloid layer (e.g. interlayer) may be or may not be present between the blue-sensitive, green-sensitive and red-sensitive emulsion layers. In addition, on an uppermost photosensitive emulsion layer, a non-photosensitive hydrophilic colloid layer (e.g. protective layer) may be or may not be present; between the lowest emulsion layer and a support, a non-photosensitive hydrophilic colloid layer may be or may not be present. From a viewpoint of graininess, sharpness and high sensitivity, dry thickness of the entire photographic component layers of the multicolor photosensitive material is preferably not more than 20 .mu.m, more preferably, 8 to 18 .mu.m. For much higher graininess and sharpness, the dry thickness is further preferably 10 to 15 .mu.m. The photographic component layers include all of the emulsion layers and the non-photosensitive layers prepared as needed, excluding a support.
In measuring dry layer thickness, commercially available contact or non-contact thickness meters can be used. It is also possible to calculate coating layer thickness as the difference of dry thickness including a film base and thickness of a film base itself separately measured. Another method is to measure directly by observing visually or taking photograph with a microscope a thin section of a photosensitive material cut by a microtome.
From a viewpoint of sensitivity, preservability at high temperature and high humidity conditions, and color image graininess, it is preferable that the couplers used for a multicolor photosensitive material is added in a solution of a high boiling point organic solvent.
The yellow couplers preferably used for multicolor photosensitive silver halide photographic materials are benzoylacetanilide yellow couplers and pivaloylacetanilide yellow couplers. Of these yellow couplers, the compounds represented by Formulae [III] and [IV] can be preferably used. ##STR5## wherein R.sub.1 through R.sub.7 and W independently represent a hydrogen atom or a substituent; preferably R.sub.1, R.sub.2 and R.sub.3 represent a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an acylamino group, a carbamoyl group, an alkoxycarbonyl group, a sulfonamide group, or a sulfamoyl group.
R.sub.4, R.sub.5, R.sub.6, and R.sub.7 preferably represent a hydrogen atom, an alkyl group, an alkoxy group, an aryloxy group, an acylamino group, or a sulfonamide group.
W, preferably represents a halogen atom, an alkyl group, an alkoxy group, an aryloxy group, or a dialkylamino group.
X.sub.1 represents a hydrogen atom or a group capable of splitting off by reaction with an oxidized product of a color developing agent. The examples of such splitting off groups include a monovalent group such as a halogen atom, a group bonded via an oxygen atom (e.g. an alkoxy group, an aryloxy group, a heterocyclic oxy group, an acyloxy group), a group bonded via a sulfur atom (e.g. an alkylthio group, an arylthio group, a heterocyclic thio group), a group bonded with a nitrogen atom (e.g. --N X.sub.1, wherein X.sub.1 represents the group of the atoms necessary to form a 5- or 6-membered ring with the nitrogen atom in the formula and at least one atom selected from carbon, oxygen, nitrogen and sulfur atoms; an acylamino group; a sulfonamide group) and a divalent group such as an alkylene group.
Of these separating groups, those bonded via a nitrogen or oxygen atom are preferred. Formula [III ] involves the cases where a dimer or higher polymer is formed at R.sub.1 through R.sub.7 , W, or X.sub.1. ##STR6## wherein R.sub.8 through R.sub.11 independently represent a hydrogen atom or a substituent; R.sub.8 preferably represents a hydrogen atom, a halogen atom, or an alkoxy group, and a halogen atom is more preferable; R.sub.9, R.sub.10, and R.sub.11 independently preferably represent a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an alkoxy group, an aryl group, a carboxy group, an alkoxycarbonyl group, a carbamoyl group, a sulfone group, a sulfamoyl group, an alkylsulfonamide group, an acylamide group, an ureido group, or an amino group; more preferably R.sub.9 and R.sub.10 is a hydrogen atom, respectively, and R.sub.11 is an alkoxycarbonyl group, an acylamide group or an alkylsulfonamide group. X represents the same groups as X.sub.1 in Formula [III]; the preferred examples of the splitting off groups are the same as those of Formula [III].
Formula [IV] involves the cases where a dimer or higher polymer is formed at R.sub.8 through R.sub.11 or X.
Of the preceding yellow couplers, a diequivalent benzoyl type yellow coupler is particularly preferable.
The magenta couplers preferably used are represented by Formula [V], [VI], [VII] or [VIII];. ##STR7##
In Formulae [V] through [VIII], R.sub.3 represents a substituent; R.sub.1 and R.sub.2 independently represent a hydrogen atom or a substituent; X represents the same groups as X.sub.1 in Formula [III]; l represents the integer of 0 through 5; each R.sub.2 may be identical or not, provided that l is 2 or more.
The examples of the substituent represented by R.sub.1 or R.sub.2 include a halogen atom and a group bonded directly or via a divalent group or atom such at alkyl, cycloalkyl, aryl or heterocyclic groups, which include substituted ones.
The examples of the substituent represented by R.sub.3 include a group such as alkyl, cycloalkyl, aryl, and heterocyclic groups, which include substituted ones.
In the above magenta couplers, the splitting off group represented by X is exemplified by the same examples as those of X.sub.1 in Formula [III]. Of these splitting off groups, those bonded via a nitrogen atom or a sulfur atom are preferred for X in Formulae [V] and [VI] and halogen atom is preferred for X in Formula [VII] and [VIII].
Formulae [V] and [VI] involve the cases where a dimer or higher polymer is formed at R.sub.2, R.sub.3 or X; Formulae [VII] and [VIII] involve the cases where a dimer or higher polymer is formed at R.sub.1, R.sub.2 or X.
The cyan couplers preferably used are represented by Formula [IX], [X], or [XI]; ##STR8##
Wherein, R.sub.2 and R.sub.3 represent the same groups as R.sub.2 and R.sub.3 in Formula [V]; X represents the same groups as X.sub.1 in Formula [III]; R.sub.4 represents a substituent; m is the integer of 1, 2 or 3; n is the integer of 1 or 2; p is the integer 1 through 5; each R.sub.2 may be identical or not, provided that m, n, and p are independently 2 or more.
R.sub.2 and R.sub.3 are exemplified by the same examples as those of R.sub.2 and R.sub.3 in Formula [[V]; R.sub.4 is exemplified by the same examples as those of R.sub.3 in Formula [V].
In the above cyan couplers, the examples of the splitting off group represented by X are the same as those of Formula [III]; a halogen atom and a group bonded via an oxygen atom are preferred.
Formula [IX] and [IX] involve the cases where a dimer or higher polymer is formed at R.sub.2, R.sub.3, or X; Formula [X] involves the cases where a dimer or higher polymer is formed at R.sub.2, R.sub.3, R.sub.4 or X.
The examples of yellow couplers, magenta couplers and cyan couplers used for the present invention are given below, but these are not to be construed as limitations in the present invention. ##STR9##
The preceding yellow, magenta, and cyan couplers are normally used in an amount of 1.times.10.sup.-4 to 10 moles per mole of silver halide.
In addition to the preceding couplers which are used mainly for image forming, it is preferable to use coupler which releases a development inhibitor (e.g. DIR coupler), or a compound capable of scavenging an oxidized product of a color developer (e.g. DSR coupler ) or masking coupler capable of correcting color (e.g. colored couplers). The preferred development inhibitor-releasing couplers (DIR couplers) are diffusible DIR couplers.
The diffusible DIR couplers should meet the requirement that a development inhibitor or a compound capable of releasing a development inhibitor, which splits off by reaction with an oxidized product of a color developer has a diffusibility of not less than 0.34, as determined by the evaluation method described below, preferably not less than 0.40.
Diffusibility is evaluated as follows:
Photosensitive material samples (I) and (II) each having a layer of the following composition is prepared on a transparent support.
Sample (I): Sample having a green-sensitive silver halide emulsion layer.
A gelatin coating solution containing silver bromoiodide (iodide 6 mol %, average grain size 0.48 m) spectrally sensitized for green-sensitivity and the following coupler in an amount of 0.07 mole per mole of silver, is coated so that the amounts of coated silver and gelatin are 1.1 g/m.sup.2 and 3.0 g/m.sup.2, respectively. Another gelatin coating solution containing silver bromoiodide (iodide 2 mol %, average grain size 0.08 .mu.m) neither chemically nor spectrally sensitized, is coated there on as a protective layer so that the amounts of coated silver and gelatin are 0.1 g/m.sup.2 and 0.8 g/m.sup.2 respectively. ##STR10##
Sample (II): the same sample as sample (I), besides that silver bromoiodide is removed from a protective layer.
Each layer contains a gelatin hardener and surfactant.
Samples (I) and (II) are subjected to white light wedge exposure, and are processed by the following procedure, using developers containing or not containing various development inhibitors in such amounts that the sensitivity of sample (II) is reduced to 60% (in logarithmic indication, -.DELTA.logE=0.22).
______________________________________Processing (38.degree. C.)______________________________________Color development 2 min. 40 sec.Bleaching 6 min. 30 sec.Washing 3 min. 15 sec.Fixing 6 min. 30 sec.Washing 3 min. 15 sec.Stabilizing 1 min. 30 sec.Drying______________________________________
The compositions of the processing solutions used in respective processes are as follows:
______________________________________[Color developer]4-Amino-3-methyl-N-ethyl-N-(.beta.- 4.75 ghydroxyethyl)-aniline sulfateAnhydrous sodium sulfite 4.25 gHydroxylamine 1/2 sulfate 2.0 gAnhydrous potassium carbonate 37.5 gSodium bromide 1.3 gTrisodium nitrilotriacetate (monohydrate) 2.5 gPotassium hydroxide 1.0 gWater is added to make total quantity 1 lit.[Bleaching solution]Ferric ammonium ethylenediaminetetracetate 100.0 gDiammonium ethylenediaminetetracetate 10.0 gAmmonium bromide 150.0 gGlacial acetic acid 10.0 ml______________________________________
Water is added to make total quantity lit., and pH is adjusted to 6.0 with aqueous ammonia.
______________________________________[Fixing solution]Ammonium thiosulfate 175.0 gAnhydrous sodium sulfite 8.5 gSodium metasulfite 2.3 g______________________________________
Water is added to make total quantity 1 lit., and pH is adjusted to 6.0 with acetic acid.
______________________________________[Stabilizing solution]Formalin (37% aqueous solution) 1.5 mKonidax (moduced by Konica Corporation) 7.5 mlWater is added to make total quantity 1 lit.______________________________________
The sensitivities of sample (I) and sample (II), in the absence of development inhibitors, are indicated by S.sub.0 and S.sub.0, respectively and also the sensitivities of sample (I) and sample (II) in the presence of development inhibitors are indicated by S.sub.I and S.sub.II, respectively; then, the degree of desensitization of sample (I) .DELTA.S=S.sub.0 -S.sub.I the degree of desensitization of sample (II) .DELTA.S.sub.0 =S.sub.0 '-S.sub.II diffusibility=.DELTA.S/.sub..DELTA. S.sub.0 ; wherein all sensitivities are indicated by the logarithm (-logE) of the reciprocal of exposure at a fog density of +0.3.
Any diffusible DIR coupler can be used irrespective of its chemical structure, as long as a diffusibility of groups released therefrom is at the preceding range.
A representative structural formula is as follows:
Formula (D -1)
A-(Y).sub.m
wherein A represents a coupler residue; m represents the integer of 1 or 2; Y represents a group a combining a coupling site of the coupler residue A, which splits off by reaction with an oxidized product of a color developer and is capable of releasing a development inhibitor or a development-inhibiting group having diffusibility not less than 0.34.
In Formula (D-1), Y is represented by Formulae (D-1) through (D-19). ##STR11##
In Formulae (D-2) through (D-7), Rd.sub.1 represents a hydrogen atom, a halogen atom, alkyl, alkoxy, acylamino, alkoxycarbonyl, thiazolidinilideneamino, aryloxycarbonyl, acyloxy, carbamoyl, N-alkylcarbamoyl, N,N-dialkylcarbamoyl, nitro, amino, N-arylcarbamoyloxy, sulfamoyl, N-alkylcarbamoyloxy, hydroxy, alkoxycarbonylamino, alkylthio, arylthio, aryl, heterocyclic, cyano, alkylsulfonyl or aryloxycarbonylamino group; n represents the integer of 0, 1, or 2; Rd.sub.1 may be identical or not when n is 2. The total number of carbon atoms contained in n Rd.sub.1 units is 0 to 10. The number of carbon atoms contained in Rd.sub.1 is 0 to 15; X represents an oxygen atom or a sulfur atom in Formula (D-6).
In Formula (D-8), Rd.sub.2 represents an alkyl group, an aryl group, or a heterocyclic group.
In Formula (D-9), Rd.sub.3 represents a hydrogen atom, alkyl, cycloalkyl, aryl, or heterocyclic group; Rd.sub.4 represents a hydrogen atom, halogen atom, alkyl, cycloalkyl, aryl, acylamino, alkoxycarbonylamino, aryloxycarbonylamino, alkanesulfonamide, cyano, heterocyclic, alkylthio, or amino group.
Provided that Rd.sub.1, Rd.sub.2, Rd.sub.3, or Rd.sub.4 represents an alkyl group, the alkyl group includes a substituted alkyl, a linear alkyl and a branched alkeyl.
Provided that Rd.sub.1, Rd.sub.2, Rd.sub.3, or Rd.sub.4 represents a heterocyclic group, the heterocyclic group is preferably a 5- or 6-membered monocyclic ring or a condensed ring containing at least one atom selected from nitrogen, oxygen, and sulfur atoms as a hetero atom; the examples of such heterocyclic rings include groups such as pyridyl, quinolyl, furyl, benzothiazolyl, oxazolyl, imidazolyl, thiazolyl, triazolyl, benzotriazolyl, imide, and oxazine.
The preceding group represented by Rd.sub.1 .about.Rd.sub.4 includes substituted one. The preferred substituents include a halogen atom, a nitro group, a cyano group, a sulfonamide group, a hydroxyl group, a carboxyl group, an alkyl group, an alkoxy group, a carbonyloxy group, an acylamino group, and an aryl group.
In Formulae (D-8), Rd.sub.2 contains 0 to 15 carbon atoms.
In Formula (D-9), the total number of carbon atoms contained in Rd.sub.3 and Rd.sub.4 is 0 to 15.
Formula (D-10)
-TIME-INHIBIT
In this formula, the TIME group is a group combining a coupling site of A in Formula (D-1), which can split off by reaction with an oxidized product of a color developer and control the INHIBIT group for releasing after separating from the coupler. The INHIBIT group is a group which becomes a development inhibitor [e.g. groups represented by Formulae (D-2) through (D-9)] after releasing.
In Formula (D-10), the -TIME-INHIBIT group is preferably represented by Formulae (D-11) through (D-19) shown below. ##STR12##
In Formulae (D-11) through (D-15) and (D-18), Rd.sub.5 represents a hydrogen atom, a halogen atom, alkyl, cycloalkyl, alkenyl, alkoxy, alkoxycarbonyl, anilino, acylamino, ureido, cyano, nitro, sulfonamide, sulfamoyl, carbamoyl, aryl, carboxy, sulfo, hydroxy, alkanesulfonyl group. In Formulae (D-11) through (D-13), (D-15) and (D-18), Rd.sub.5 may be combined each other to form a condensed ring. In Formulae (D-11), (D-14), (D-15) and (D-19), Rd.sub.6 represents alkyl, alkenyl, cycloalkyl, heterocyclic, or aryl group. In Formulae (D-16) and (D-17), Rd.sub.7 represents a hydrogen atom, alkyl, alkenyl, cycloalkyl, heterocyclic, or aryl group. Rd.sub.8 and Rd.sub.9 in Formula (D-19) independently represent a hydrogen atom or an alkyl group (preferably an alkyl group with a carbon number of 1 to 4). k in Formulae (D-11) and (D-15) through (D-18) represents the integer of 0, 1 or 2; in Formulae (D-11) through (D-13), (D-15), and (D-18 ) represents the integer of 1 through 4; m in Formula (D-16) represents the integer of 1 or 2; Rd.sub.7 may be identical or not, when m is 2; n in Formula (D-19) represents the integer of 2, 3 or 4; n groups of Rd.sub.8 and Rd9 may be identical or not; B in Formulae (D-16) through (D-18) represents an oxygen atom or ##STR13## (Rd.sub.6 represents the same group as defined above) ; in General (D-16) represents a single bond or a double bond; in a single bond, m is 2, and in a double bond, m is and the INHIBIT group represents the same groups as those defined in Formulae (D-2) through (D-9) except the number of carbon atoms.
With respect to the INHIBIT group, the number of carbon atoms contained in Rd.sub.1 per molecule of Formulae (D-2) through (D-7) is 0 to 32; R.sub.d2 in Formula (D-8) contains 1 to 32 carbon atoms; Rd.sub.3 and Rd.sub.4 in Formula (D-9) contain 0 to 32 carbon atoms in total.
The preceding groups represented by Rd.sub.5 to Rd.sub.7 includes a substituted one.
Of the diffusible DIR compounds, those represented by Formula (D-2), (D-3) or (D-10) are preferred. Of the compounds represented by Formula (D-10), are preferred those having an INHIBIT group represented by Formula (D-2), (D-6) [particularly when X in Formula (D-6) is an oxygen atom], or (D-8) [particularly when Rd.sub.2 in Formula (D-8) is a hydroxyaryl group or an alkyl group with a carbon number of 1 through 3].
The coupler components represented by A in Formula (D-1) are yellow, magenta and cyan color image forming coupler residues, and non-color-forming coupler residue.
The preferred diffusible DIR couplers are shown below, but these are not to be construed as limitations in the present invention.
______________________________________Example CompoundsNo. R.sub.1 R.sub.2 Y______________________________________D-1 ##STR14## ##STR15##D-2 (1) (1) (30)D-3 (2) (3) (30)D-4 (2) (4) (30)D-5 (5) (6) (31)D-6 (2) (4) (32)D-7 (2) (3) (32)D-8 (7) (8) (33)D-33 (2) (4) (55) ##STR16##D-9 (9) (10) (30)D-10 (11) (10) (30)D-11 (12) (7) (34)D-12 (12) (13) (35)D-13 (9) (14) (36)D-14 (15) (16) (37) ##STR17##D-15 (17) (38)D-16 (17) (39)D-17 (18) (40)D-18 (19) (41)D-19 (18) (42)D-20 (18) (43)D-21 (18) (44)D-22 (18) (45)D-23 (18) (46)D-24 (20) (47)D-25 (20) (48)D-26 (21) (49)D-27 (21) (50)D-28 (21) (51)D-29 (22) (52)D-30 (18) (53)D-31 (18) (54)D-32 (22) (49)______________________________________ ##STR18##
The examples of diffusible DIR couplers including these couplers, which can be used for the present invention, are described in U.S. Pat. Nos 4,234,678, 3,227,554, 3,617,291, 3,958,993, 4,149,886, and 3,933,500, Japanese Patent Publication Open to Public Inspection Nos. 56837/1982 and 13239/1976, U.S. Pat. Nos. 2,072,363 and 2,070,266 and Research Disclosure No. 21228/December, 1981, for instance.
The diffusible DIR compounds are used preferably in amounts of 0.0001 to 0.1 mole, more preferably 0.001 to 0.05 mole per mole of silver halide.
A DSR coupler is defined as a coupler capable of releasing a compound capable of scavenging an oxidized product of a color developer, or its precursor by reaction with an oxidized product of a color developer, and preferably is represented by Formula [S];
General Formula [S] ##STR19## wherein Coup represents a coupler residue capable of releasing (Time l--Sc by reaction with an oxidized product of a color developer; Time represents a timing group capable of releasing Sc after release of Time-Sc from Coup; Sc represents a scavenger capable of scavenging an oxidized product of a color developer by oxidation-reduction reaction or coupling reaction; l represents the integer of 0 or 1.
For more details of the compound represented by Formula [S], the coupler residue represented by Coup is generally a yellow coupler residue, magenta coupler residue, cyan coupler residue, or a coupler residue which forms substantially no image forming coupling dye, or preferably a coupler residue represented by Formulae [Sa] through [Sh]. ##STR20##
In Formula [Sa], R.sub.1 presents an alkyl group, an aryl group, or an arylamino group; R.sub.2 represents an aryl group or an alkyl group.
In Formula [Sb], R.sub.3 represents an alkyl group or an aryl group; R.sub.4 represents an alkyl group, an acylamino group, an arylamino group, an arylureido group, or an alkylureido group.
In Formula [Sc], R.sub.4 represents the same groups as those defined in Formula [Sb]; R.sub.5 represents an acylamino group, a sulfonamide group, an alkyl group, an alkoxy group, or a halogen atom.
In Formulae [Sd] and [Se], R.sub.7 represents an alkyl group, an aryl group, an acylamino group, an arylamino group, an alkoxy group, an arylureido group, or an alkylureido group; R.sub.6 represents an alkyl group or an aryl group.
In Formula [Sf], R.sub.9 represents an acylamino group, a carbamoyl group, or an arylureido group; R.sub.8 represents a halogen atom, an alkyl group, an alkoxy group, an acylamino group, or a sulfonamide group.
In Formula [Sg], R.sub.9 represents the same groups as defined in Formula [Sf]; R.sub.10 represents an amino group, a acylamide group, a sulfonamide group, or a hydroxyl group.
In Formula [Sh], R.sub.11 represents a nitro group, an acylamino group, a succinimide group, a sulfonamide group, an alkoxy group, an alkyl group, a halogen atom, or a cyano group.
In the above formulae, in [Sc] represents the integers of 0 through 3; n in [Sf] and [Sh] represents the integer of 0, 1, or 2; m in [Sg] represents the integer of 0 or 1; when l and/or n is 2 or more, R.sub.5 R.sub.8 and R.sub.11 may independently be identical or not.
The preceding groups may have substituents; the preferred substituents include a halogen atom, a nitro group, a cyano group, a sulfonamide group, a hydroxyl group, a carboxyl group, an alkyl group, an alkoxy group, a carbonyloxy group, an acylamino group, and an aryl group, and also include groups having a coupler moiety which constitutes what is called his type coupler or polymer coupler.
An oleophile exhibited by R.sub.1 through R.sub.11 in the above Formulae can be arbitrarily selected by purpose. In ordinary image forming couplers, the total number of carbon atoms of R.sub.1 through R.sub.10 is preferably 10 to 60, more preferably 15 to 30. Provided that dyes formed by color development processing are provided with a function to shift in a photosensitive material to some extent, the total number of carbon atoms of R.sub.1 through R.sub.10 is preferably not more than 15.
The couplers which virtually do not form dyes for forming an image represent the couplers which leave no color image after development, including couplers which form no colored dye, what is called effluent dye-forming couplers, where colored dyes flow out from a photosensitive material into a processing solution, and what is called bleaching dye-forming couplers, where colored dyes are bleached by reaction with components in a processing solution. In effluent dye-forming couplers, the total number of carbon atoms of R.sub.1 through R.sub.10 is preferably not more than 15, and preferably contains at least one carboxyl group, arylsulfonamide group or alkylsulfonamide group as a substituent for R.sub.1 through R.sub.10.
The timing group represented by Time in the above Formula [S] is preferably represented by Formula [Si], [Sj] or [Sk]; ##STR21## wherein B represents an atomic group necessary to form a benzene ring or a naphthalene ring; Y represents --O--, --S--, or ##STR22## and combines an active site of Coup (coupling component) in the above Formula [S]; R.sub.12, R.sub.13, and R.sub.14 independently represent a hydrogen atom, an alkyl group or an aryl group. ##STR23## is positioned at ortho or para to Y in
Bring, and the other end is combined to Sc in the above Formula [S]. ##STR24## wherein Y, R.sub.12, and R.sub.13 independently represent the same atoms and groups as those defined in Formula [Si]; R.sub.15 represents a hydrogen atom, an alkyl group, an aryl group, an acyl group, a sulfone group, an alkoxycarbonyl group, or a heterocyclic residue; R.sub.16 represents a hydrogen atom, an alkyl group, an aryl group, a heterocyclic residue, an alkoxy group, an amino group, an acid amide group, a sulfonamide group, a carboxy group, an alkoxycarbonyl group, a carbamoyl group, or a cyano group. In the timing group represented by Formula [Sj], like the above Formula [Si], Y is combined to an active site of Coup (coupling component) and ##STR25## to Sc in the above Formula [S ].
The examples of the Time group which releases Sc by intramolecular nucleophilic substitution include the group represented by the following Formula [Sk ].
Formula [Sk]
--Nu--D--E--
wherein Nu represents a nucleophilic group having oxygen, sulfur, nitrogen, or other atoms, and is combined to an active site of Coup (coupling component) in Formula [S]; E represents an electrophilic group having a carbonyl group, a thiocarbonyl group, a phosphinyl group, a thiophosphinyl group, or other groups. This electrophilic group E is combined to a hetero atom of Sc; D represents a linkage group which sterically links Nu and E and is capable of initialing an intramolecular nucleophilic substitution followed by a reaction to form a 3- to 7-membered ring after Nu is released from Coup (coupling component), and thereby releasing Sc.
A scavenger which scavenges an oxidized product of a color developer and is represented by Sc includes two types, namely an oxidation-reduction type and a coupling type.
When Sc in Formula [S] is a group which scavenges an oxidized product of a color developer by oxidation-reduction reaction, it is capable of reducing the oxidized product of the color developing agent; for example, the reducing agents described in Angew. Chem. Int. Ed., 17, 875-886 (1978), "The Theory of the Photographic Process", 4th edition (Macmillan, 1977), Chapter 11, Japanese Patent Publication Open to Public Inspection No. 5247/1984, etc. are preferred for Sc, and in addition, Sc may be a precursor capable of releasing any one of these reducing agents. Specifically, the preferred groups are an aryl group and a heterocyclic group, each having at least
two of --OH group, --NHSO.sub.2 R.sub.1 group, ##STR26## and ##STR27## group (wherein R and R' independently represent a hydrogen atom, an alkyl, a cycloalkyl, an alkenyl, or an aryl group); of these groups, aryl groups are particularly preferable, and a phenyl group is more preferable. An oleophilicity of Sc can be arbitrarily selected by purpose, as is the case in the couplers represented by the above Formulae [Sa] through [Sh]; however, for maximizing the effect of the present invention, the total number of carbon atoms of Sc is 6 to 50, preferably 6 to 30, more preferably 6 to 20.
When Sc scavenges an oxidized product of a color developer by coupling reaction, it may be any one of various coupler residues. However, Sc is preferably a coupler residue which forms substantially no image forming coupling dye; couplers used for this purpose include the preceding effluent dye-forming couplers, bleaching dye-forming couplers, and Weiss couplers which have a non-leaving substituent at a reactive point and forms no dye.
The examples of the compound represented by
Formula [S] include the compounds described in British Patent No. 1,546,837, Japanese Patent Publication Open to Public Inspection Nos. 150631/1977, 111536/1982, 111537/1982, 138636/1982, 185950/1985, 203943/1985, 213944/1985, 214358/1985, 53643/1986, 84646/1986, 86751/1986, 102646/1986, 102647/1986, 107245/1986, 113060/1986, 231553/1986, 233741/1986, 236550/1986, 236551/1986, 238057/1986, 240240/1986, 249052/1986, 81638/1987, 205346/1987, and 287249/1987.
Oxidation-reduction type scavengers can be preferably used for Sc; in this case, an oxidized color developer can be reduced for reuse.
The examples of the DSR compound represented by the above Formula [S] are shown below, but these are not to be construed as limitations in the present invention. ##STR28##
A DSR coupler can be added to a photosensitive silver halide emulsion layer and/or a non-photosensitive layer, but the DSR coupler is preferably added to the photosensitive silver halide emulsion layer.
Two or more DSR couplers may be added to a single layer and the same DSR coupler may be added to two or more layers.
Usually, these DSR couplers are preferably used in amounts of 2.times.10.sup.-4 to 5.times.10.sup.-1 mole, more preferably, 1.times.10.sup.-2 to 2.times.10.sup.-1 mole per mole of silver in an emulsion layer.
When the preceding yellow, magenta or cyan coupler used mainly for image forming, and a DSR coupler are used in combination, the amount of the DSR coupler used is preferably 0.01 to 100 moles, more preferably 0.03 to 10 moles per mole of yellow, magenta, or cyan coupler.
The examples of colored couplers used for the invention include those described in U.S. Pat. Nos. 3,476,560, 2,521,908, and 3,034,892, Japanese Patent Examined Publication Nos. 2016/1969, 22335/1963, 11304/1967, and 32461/1969, Japanese Patent Publication Open to Public Inspection Nos. 26034/1976 and 42121/1977, and West German OLS Patent No. 2,418,959.
The preceding various couplers can be added in any manner, as long as they are dissolved in a high-boiling-point organic solvent to be eventually contained in a photosensitive material; usually, after dissolved in a water-immiscible high-boiling-point organic solvent with a boiling point of over 150.degree. C., in combination with a low-boiling-point and/or water-soluble organic solvent as needed, a coupler is mixed with an aqueous gelatin solution containing a surfactant to emulsify by a high-speed rotary mixer, colloid mill or other means, and then is added to a hydrophilic colloid such as silver halide emulsion.
High-boiling-point organic solvents used for the invention include organic solvents with a boiling point of over 150.degree. C., which do not react with an oxidized product of a developer, such as phenol derivatives, alkyl phthalates, phosphates, citrates, benzoates, alkylamides, fatty acid esters, and trimesates; particularly, those with a boiling point of over 170.degree. C. are preferred.
The examples of high-boiling-point organic solvents are described in detail in U.S. Pat. Nos. 2,322,027, 2,533,514, 2,835,579, 3,287,134, 2,353,262, 2,852,383, 3,554,755, 3,676,137, 3,676,142, 3,700,454, 3,748,141, 3,779,765, and 3,837,863, British Patent Nos. 958,441 and 1,222,753, West German OLS Patent No. 2,538,889, Japanese Patent Publication Open to Public Inspection Nos. 1031/1972, 90523/1974, 23823/1975, 26037/1976, 27921/1976, 27922/1976, 26035/1976, 26036/1976, 62632/1975, 1520/1978, 1521/1978, 15127/1978, 119921/1979, 119922/1979, 25057/1980, 36869.1980, 19049/1981, and 81836/1981, and Japanese Patent Examined Publication No. 29060/1973, for instance.
Low-boiling-point and/or water-soluble organic solvents which can be used in combination with high-boiling-point solvents include those described in U.S. Pat. Nos. 2,801,171 and 2,949,360, for instance. The examples of low-boiling-point, substantially water-insoluble organic solvents include ethyl acetate, propyl acetate, butyl acetate, butanol, chloroform, carbon tetrachloride, nitromethane, nitroethane, and benzene; the examples of water-soluble organic solvents include acetone, methyl isobutyl ketone, .beta.-ethoxyethyl acetate, methoxyglycol acetate, methanol, ethanol, acetonitrile, dioxane, dimethylformamide, dimethyl sulfoxide, hexamethylphosphoramide, diethylene glycol monophenyl ether, and phenoxyethanol.
In color developing process, the preceding photosensitive halide photographic material, after imagewise exposing, is subjected to at least color development and a treatment including bleaching and/or fixing; from the viewpoint of sensitivity and image graininess and sharpness, a photosensitive material is developed preferably in not more than 120 seconds, more preferably in 20 to 120 seconds, further more preferably 40 to 100 seconds.
Color developers used for the invention are described below.
Aromatic primary amine-based color developers are preferably used, including known ones widely used for various color photographic processes. These color developers include aminophenol derivatives and p-phenylenediamine derivatives. These compounds are normally used in the form of salts, e.g. hydrochlorides or sulfates, since they are more stable than free forms.
The examples of aminophenols include o-aminophenol, p-aminophenol, 5-amino-2-oxy-toluene, 2-amino-3-oxy-toluene, 2-oxy-3-amino-1,4-dimethylbenzene, and their salts.
The examples of p-phenylenediamine-based color developers include p-phenylenediamine, N,N-diethyl-p-phenylenediamine, 3-methyl-4-amino-N-ethyl-N-.beta.-hydroxyethylaniline, and their salts.
The preferable aromatic primary amine-based color developers include the various compounds described in Japanese Patent Publication Open to Public Inspection No. 162885/1986, pp. 79-86. The preceding color developer is preferably contained in a developing solution in amounts of not less than 2.times.10.sup.31 2 mole, more preferably 2.5.times.10.sup.-2 to 2.times.10.sup.-1 mole, further more preferably 3.times.10.sup.-2 to 1.times.10.sup.-1 mole per liter of developing solution.
The other preferred compounds which can be used for a color developing solution are sulfites, hydroxylmaines and development inhibitors.
The sulfites include sodium sulfite, sodium hydrogen sulfite, potassium sulfite, and potassium hydrogen sulfite. They are used preferably at the range of 0.1 to 40 g/l, more preferably 0.5 to 10 g/l.
The hydroxylamines are used as counter salts against hydrochlorides, sulfates, etc.; they are used preferably at the range of 0.1 to 40 g/l, more preferably 0.5 to 10 g/l.
The inhibitors include halides such as sodium bromide, potassium bromide, sodium iodide, and potassium iodide; the organic inhibitors include the following compounds, which are added in amounts of 0.005 to 20 g/l, preferably 0.01 to 5 g/l.
It is preferable to add further an organic inhibitor to a color developing solution. Organic inhibitors used for the invention include the compounds described in Japanese Patent Publication Open to Public Inspection No. 162885/1986, pp. 88-105.
It is preferable that a color developing solution contains a compound represented by the following Formula [IS]. ##STR29## wherein Rs.sup.1 represents --OH, --ORs.sup.4 or ##STR30## Rs.sup.4 and Rs.sup.5 independently represent an alkyl group; the alkyl groups represented by each of Rs.sup.4 and Rs.sup.5 include substituted ones, and the examples of substituents are a hydroxyl group and an aryl group such as a phenyl group and the alkyl groups include methyl, ethyl, propyl, butyl, benzy, .beta.-hydroxyethyl, and dodecyl groups;
Rs.sup.2 and Rs.sup.3 independently represent --H or ##STR31## Rs.sup.6 represents an alkyl group or an aryl group; the alkyl group represented by Rs.sup.6 include long-chained alkyl groups such as undecyl group;
Xs and Ys are respectively carbon atoms and hydrogen atoms, which are combined with other atomic groups to form a 6-membered ring; Zs represents --N.dbd. or --CH.dbd.;
Provided that Zs represents --N.dbd., the compound represented by Formula [IS] is typically exemplified by citrazinic acid derivatives; provided that Zs represents --CH.dbd., the compound represented by Formula [IS] is typically exemplified by benzoic acid derivatives; these compounds, as a whole, include compounds having a substituent such as halogen atom in the 6-membered ring.
Zs is preferably --N.dbd..
The examples of the compounds represented by Formula [IS] are shown below, but these are not to be construed as limitations in the present invention. Example compounds: ##STR32##
The compound represented by Formula [IS] is preferably used in an amount of 0.1 to 50 g, more preferably 0.2 to 20 g per liter of color developing solution.
The color developing solution may be further supplemented with various conventional additives, e.g. alkali agents such as sodium hydroxide and sodium carbonate; alkali metal thiocyanates; alkali metal halides; benzyl alcohol; water softening agents; thickening agents; and development accelerators.
The other additives used for a developing solution include anti-stain agents, anti-sludge agents, preservatives, interlayer effect accelerators, and chelating agents.
A color developing solution is used preferably at pH not less than 9, more preferably at pH 9 to 13.
Color developing temperature is normally over 15.degree. C., usually at the range of 20.degree. to 50.degree. C., and preferably over 30.degree. C. for quick development.
Essentially, there is no particular limitation to processing of a photographic light-sensitive material of the present invention; various methods of processing are applicable. The representative methods include a method in which bleach-fixing is conducted after color developing and, if needed, followed by washing or stabilization for substituting washing; a method in which bleaching and fixing are separately conducted after color developing, and, if needed, followed by washing or stabilization for substituting washing; a method in which pre-hardening neutralization, color developing, stop-fixing, washing (or stabilization for substituting washing), bleaching, fixing, washing (or stabilization for substituting washing), post-hardening, and washing (or stabilization for substituting washing) are conducted in this order; a method in which color developing, washing (or stabilization for substituting washing), secondary color developing, stop, bleaching, fixing, washing (or stabilization for substituting washing), and stabilization are conducted in this order; and a method in which developed silver resulting from color developing is again subjected to color developing after subjected to halogenation bleaching, to increase the amount of dye formed.
Bleaching agents generally known to be usable in the bleaching bath or bleach-fix bath include aminopolycarboxylic acids and other organic acids such as oxalic acid and citric acid as coordinated with metal ions such as iron, cobalt, and silver ions. Representative examples of aminopolycarboxylic acids include:
Ethylenediaminetetraacetic acid
Diethylenetriaminepentaacetic acid
Propylenediaminetetraacetic acid
Nitrilotriacetic acid
Iminodiacetic acid
Glycoletherdiaminetetraacetic acid
Ethylenediaminetetrapropionic acid
Disodium ethylenediaminetetraacetate
Pentasodium diethylenetriaminepentaacetate
Sodium nitrilotriacetate
Bleaching and bleach-fixing solutions generally can be used at the pH range of 0.2 to 9.5, preferably over 4.0, more preferably over 5.0. Processing temperature is normally 20.degree. to 80.degree. C., preferably over 30.degree. C.
Bleaching solution may be supplemented with various additives as well as the preceding bleaching agents (ferric complex salts of organic acids are preferred). The particularly preferable additives are alkali halides and ammonium halides, such as potassium bromide, sodium bromide, sodium chloride, ammonium bromide, potassium iodide, sodium iodide, and ammonium iodide. It is also possible to add pH buffers such as borates, oxalates, acetates, carbonates, and phosphates; stabilizing agents such as triethanolamine; and other additives known to be usually added to bleaching bath, such as acetylacetone, phosphonocarboxylic acid, polyphosphoric acid, organic phosphonic acid, oxycarboxylic acid, polycarboxylic acid, alkylamine, and polyethylene oxide.
Bleach-fix solution includes bleach-fix solution with a composition supplemented with small amounts of halides such as potassium bromide, bleach-fix solution with a composition supplemented with large amounts of halides such as potassium bromide and ammonium bromide, and bleach-fix solution specially comprising a bleaching agent of the present invention and large amounts of halides such as potassium bromide.
The examples of such halides include hydrochloric acid, hydrobromic acid, lithium bromide, sodium bromide, ammonium bromide, potassium iodide, sodium iodide, and ammonium iodide, as well as potassium bromide.
The representative examples of a silver halide fixer contained in bleach-fix solution include compounds which react with silver halides to form water-soluble complex salts and is used for ordinary fixing, e.g. thiosulfates such as potassium thiosulfate, sodium thiosulfate, and ammonium thiosulfate; thiocyanates such as potassium thiocyanate, sodium thiocyanate, and ammonium thiocyanate; thioureas; thioethers; high concentration bromides and iodides. These fixers are used at the amount range where they are dissolved at ratio of not less than 5 g/l, preferably not less than 50 g/l, further more preferably not less than 70 g/l.
Bleach-fixing solution, like bleaching solution, can be supplemented with two or more pH buffers containing boric acid, acetic acid, and various salts such as borax, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium acetate, and ammonium hydroxide. Furthermore, various brightening agents, defoaming agents, surfactants, and fungicides can also be added. It is also possible to add such preservatives as hydroxylamine, hydrazine, sulfites, metabisulfites, and metabisulfite adducts of aldehyde or ketone compounds; organic chelating agents such as acetylacetones, phosphonocarboxylic acids, polyphosphoric acids, organic phosphonic acids, oxycarboxylic acids, polycarboxylic acids, dicarboxylic acids, and aminopolycarboxylic acids; stabilizers such as nitroalcohol and nitrates; anti-stain agents such as organic amines; other additives; and organic solvents such as methanol, dimethylformamide, and dimethylsulfoxide.
The most desirable is the processing method in which bleaching or bleach-fixing is conducted immediately after color developing, but bleaching or bleach-fix processing may be conducted after washing or other processes such as rinsing and stopping, following color developing, and a pre-bath supplemented with bleaching accelerator may also be used as a processing solution prior to bleaching or bleach-fixing.
In processing the photosensitive silver halide photographic material of the present invention, processing temperature in various processes other than developing, e.g. bleaching-fixing (or bleaching and fixing), and washing or stabilization for substituting washing conducted as needed, is preferably 20.degree. to 80.degree. C., more preferably over 30.degree. C.
In the present invention, it is preferable to conduct stabilizing treatment without water washing as disclosed in Japanese Patent Publication Open to Public Inspection Nos. 14834/1983, 10514/1983, 134634/1983, and 18631/1983, and Japanese Patent Application Nos. 2709/1983 and 89288/1984, for instance.
EXAMPLES
The invention is hereunder described in detail by referring to the examples.
Preparation of AgX Seed Emulsion N-1
Using a method described in Japanese Patent O.P.I. Publication No. 45437/1975, to 500 ml of 2.0% aqueous gelatin solution heated to 40.degree. C. were added, in 35 minutes, 250 ml of 4M (mole concentration) aqueous AgNO.sub.3 solution, and 250 ml of 4 M aqueous KBr/KI [KBr:KI=98:2 (mole ratio)] solution, by a controlled double-jet method, while the pAg level was maintained at 9.0 and pH level at 2.0. Aqueous gelatin solution containing the AgX grains of a total amount of silver added was adjusted to pH 5.5, and then, 364 ml of 5% aqueous solution of Demol N (produced by Kao Atlas), as well as 244 ml of 20% aqueous solution containing magnesium sulfate as multivalent ion were added to come into coagulation. The resultant precipitant was allowed to settle down, and then, the supernatant was decanted, and redispersed after 1400 ml of distilled water was added. To the dispersion was added 36.4 ml of 20% aqueous magnesium sulfate to allow re-coagulation, and then the supernatant was decanted. An aqueous solution containing 28 g of ossein gelatin was added to make total quantity 425 ml, which was dispersed for 40 minutes at 40.degree. C. to prepare AgX emulsion.
This emulsion was designated N-1. Electromicroscopic observation revealed that N-1 was a monodispersed emulsion with an average grain size of 0.093 .mu.m.
Preparation of AgX Seed Emulsions N-2, and N-3 (Preparation Example 2)
Using a method identical to that of Preparation Example 1, monodispersed AgBrI seed emulsions N-2 and N-3, both having iodide content of 2 mol %, were prepared; the average grain size of the former was 0.27 .mu.m, while that of the latter was 0.8 .mu.m.
Preparation of Seed Emulsions N-4, and N-5
AgX seed emulsions N-4, and N-5 were prepared, at the conditions identical to those of emulsion N-1, wherein an additive was added to the preceding 4M aqueous KBr/KI solution in an amount as specified in Table below. Electromicroscopic observation revealed that each and N-4 and N-5 was a monodispersed emulsion with an average grain size of 0.093 .mu.m.
TABLE______________________________________ Additive Amount added (mol/mol of Ag)______________________________________N-4 RhCl.sub.3 2 .times. 10.sup.-5N-5 K.sub.2 IRCl.sub.5 2 .times. 10.sup.-5______________________________________
Manufacturing Example 1
Using six types of solution specified below, the silver halide grains of the invention were prepared. The grains were the core/shell type silver bromoiodide grains having an average size 0.38 *m, and an average AGI content of 8.46 mol %.
______________________________________Solution A-1Ossein gelatin 28.78 g10% ethanol solution of ##STR33##(average M.W. 1700,PRONON, produced by NIHON YUSHI) 16.5 mlKI 146.5 gDistilled water 5287 mlSolution B-1Seed emulsion N-1 (average grain size, 0.093 *m; equivalent toAgBrI; average I content, 2 mol %) 0.1552 mole AgX4-hydroxy-6-methyl-1,3,3a,7-tetraazaindene (hereinafter 247.5 mgreferred to as TAI)56% aqueous acetic acid solution 72.6 ml28% aqueous ammonium solution 97.2 mlDistilled water added to make total quantity 1020 mlSolution C-1AgNO.sub.3 1774 g28% aqueous ammonium solution 1447 mlDistilled water added to make total quantity 2983 mlSolution D-1Ossein gelatin 50 gKBr 2082.5 gTAI 2.535 gDistilled water added to make total quantity 5000 mlSolution E-120% aqueous KBr solution amount needed for controlling pAgSolution F-156% aqueous acetic acid solution amount needed for controlling pH______________________________________
Using a mixer described in Japanese Patent O.P.I. Publication Nos. 92423/1982, and 92524/1982, 252 ml of Solution C-1 was added to Solution A-1 in one minute at 40.degree. C. to generate AgI grains. Electromicroscopic observation revealed that the average size of the AgI grains was approx. 0.05 .mu.m. Then, Solution B-1 was added. Next, solutions C-1 and D-1 were added by a double-jet method, while controlling pAg, pH, and the rates of addition of C-1 and D-1 as specified in Table 1. During addition pAg and pH were controlled by changing the flow rates of Solution E-1 and F-1 using a variable flow rate roller tube pump. Two minutes after the termination of adding Solution C-1, pAg was adjusted to 10.4 by Solution E-1 , and 2 minutes later, pH was adjusted to 6.0 by Solution F-1.
Next, by a conventional method, desalination and washing were performed. Then, the mixture solution was dispersed in aqueous solution containing 197.4 g of ossein gelatin, and distilled water was added to make the total quantity 3000 ml to obtain emulsion EM-1.
FIG. 1 is an electron micrograph of EM-1.
TABLE 1______________________________________Grain growth conditions (EM-1)Time Addition rate of solution (ml/min.)(min.) pH pAg Solution C-1 Solution D-1______________________________________0 8.55 9.00 9.8 9.37.85 8.55 8.81 30.7 29.211.80 8.55 8.60 44.9 42.717.33 8.55 8.25 61.4 58.419.23 8.55 8.10 63.5 60.422.19 8.55 7.88 56.6 53.828.33 8.55 7.50 41.2 39.836.61 9.38 7.50 31.9 34.140.44 9.71 7.50 30.6 37.145.14 10.12 7.50 34.6 57.845.97 10.20 7.50 37.3 36.357.61 10.20 7.50 57.3 55.863.08 10.20 7.50 75.1 73.166.63 10.20 7.50 94.0 91.4______________________________________
Manufacturing Example 2
In a manner identical to that of Manufacturing Example 1, the AgX (core/shell type AgBrI) grains of the invention were prepared, wherein the average size was 0.27 .mu.m, and the average I content was 8.46 mol %.
______________________________________Solution A-2Ossein gelatin 43 gKI 142.6 g10% ethanol solution of PRONON 20 mlDistilled water added to make total quantity 5400 mlSolution B-2Seed emulsion N-1 equivalent to 0.4328 mole AgXTAI 630 mg56% aqueous acetic acid solution 105 ml28% aqueous ammonium solution 176 mlDistilled water added to make total quantity 3645 mlSolution C-2AgNO.sub.3 1726 g28% aqueous ammonium solution 1409 mlDistilled water added to make total quantity 2903 mlSolution D-2Ossein gelatin 50 gKBr 2082.5 gTAI 5.37 gDistilled water added to make total quantity 5000 mlSolution E-2Same as E-1.______________________________________
Solution F-2
Same as F-1.
As in Manufacturing Example 1, using the mixer used in Manufacturing Example 1, 245.5 m! of solution C-2 was added to solution A-2 at 40.degree. C. in one minute, in order to generate AgI grains. An average grain size of the AgI grains was approximately 0.05 *m, same as that of Manufacturing Example 1. Following AgI precipitation, Solution B-2 was added. Next, Solutions C-2 and D-2 were added simultaneously by a double-jet method, wherein pAg pH and the flow rates of C-2 and D-2 were controlled as specified in Table 2. PAg and pH were controlled in the same manner as in Manufacturing Example 1.
After pAg and pH were adjusted in the same manner as in Manufacturing Example 1, desalination, washing and dispersing were performed, and the total quantity was adjusted to 3000 m!. This emulsion was designated EM-2.
FIG. 2 is an electron micrograph of EM-2.
TABLE 2______________________________________Grain growth conditions (EM-2)Time Addition rate of solution (ml/min.)(min.) pH pAg Solution C-2 Solution D-2______________________________________0 9.00 8.80 18.4 18.03.74 8.93 8.80 28.8 28.37.04 8.82 8.80 42.2 41.410.48 8.68 8.80 59.4 58.213.13 8.52 8.80 71.5 70.216.56 8.30 8.80 79.2 77.721.04 8.00 8.80 73.9 74.723.04 7.96 9.07 71.8 74.725.10 7.92 9.35 68.7 75.226.38 7.89 9.51 67.6 79.429.29 7.83 9.90 75.6 75.031.19 7.79 9.90 76.9 76.334.56 7.72 9.90 77.9 77.240.19 7.59 9.90 76.2 75.544.46 7.50 9.90 73.3 72.6______________________________________
Manufacturing Example 3
In a manner identical to that of Manufacturing Example 1, the AgX (core/shell type AgBrI) grains of the invention were prepared, wherein an average size was 0.65 .mu.m, and an average I content was 7.16 mol %.
______________________________________Solution A-3Ossein gelatin 45 gKI 116.8 g10% ethanol solution of PRONON 30 mlDistilled water added to make total quantity 9191 mlSolution B-3Seed emulsion N-2 (average grain size, 0.27 .mu.m;AgBrI; average I content, 2 mol %) equivalent to 0.759 mole AgX56% aqueous acetic acid solution 112.5 ml28% aqueous ammonium solution 175.5 mlTAI 600 mgDistilled water added to make total quantity 2608 mlSolution C-3AgNO.sub.3 1671 g28% aqueous ammonium solution 1363 mlDistilled water added to make total quantity 2810 mlSolution D-3Ossein gelatin 50 gKBr 2082.5 gTAI 5.338 gDistilled water added to make total quantity 5000 mlSolution E-3Same as Solution E-1Solution F-3Same as Solution F-1______________________________________
At 40.degree. C. 201 ml of Solution C-3 was added to Solution A-3 in one minute, wherein the other conditions were the same as those in Manufacturing Example 1.
PH, pAg and the flow rates are shown in Table 3.
This emulsion was designated EM-3.
FIG. 3 is an electron micrograph of EM-3.
TABLE 3______________________________________Grain growth conditions (EM-3)Time Addition rate of solution (ml/min.)(min.) pH pAg Solution C-3 Solution D-3______________________________________0 9.00 8.55 22.1 22.17.01 8.93 8.55 18.8 18.818.45 8.77 8.55 30.4 30.430.22 8.55 8.55 41.5 41.533.98 8.46 8.55 51.5 51.535.92 8.40 8.55 65.7 67.638.19 8.31 9.04 77.4 84.339.60 8.25 9.38 83.7 97.241.64 8.18 9.79 55.8 82.744.07 8.11 10.12 38.7 79.544.83 8.10 10.20 35.6 36.461.76 7.80 10.20 30.4 31.182.4 7.50 10.20 24.5 25.1______________________________________
Manufacturing Example 4
In a manner identical to that of Manufacturing Example 1, the Agx (core/shell type AgBrI) grains of the invention were prepared, wherein an average size was 2.0 .mu.m, and an average I content was 6.54 mol %.
______________________________________Solution A-4Ossein gelatin 46.55 g10% ethanol solution of PRONON 15 mlKI 107.5 gDistilled water added to make total quantity 6265 mlSolution B-4Seed emulsion N-3 (average grain size, 0.8 *m; equivalent toAgBrI; average I content, 2 mol %) 0.6778 mole AgX56% aqueous acetic acid solution 441 ml28% aqueous ammonium solution 617 mlTAI 750 mgDistilled water added to make total quantity 5500 mlSolution C-4AgNO.sub.3 1685 g28% aqueous ammonium solution 1372 mlDistilled water added to make total quantity 2834 mlSolution D-4Ossein gelatin 50 gKBr 2082.5 gTAI 4 gDistilled water added to make total quantity 5000 mlSolution E-4Same as Solution E-1Solution F-4Same as Solutioan F-1______________________________________
At 50.degree. C., 185 ml of Solution C-4 was added to Solution A-4 in one minute, wherein the other conditions were the same as those in Manufacturing Example 1.
pH, pAg and the flow rates are shown in Table 4.
This emulsion was designated Em-4.
FIG. 4 is an electron micrograph of EM-4.
TABLE 4______________________________________Grain growth conditions (EM-4)Time Addition rate of solution (ml/min.)(min.) pH pAg Solution C-4 Solution D-4______________________________________0 9.00 8.90 6.1 6.130.43 9.00 8.90 10.9 10.950.32 9.00 8.90 14.7 14.770.61 9.00 8.90 18.9 20.778.43 8.82 9.21 24.3 29.285.71 8.61 9.58 29.7 43.890.19 8.46 9.84 34.7 65.291.73 8.40 9.94 39.2 83.194.84 8.33 10.15 33.8 95.995.69 8.31 10.20 32.6 34.7109.67 8.02 10.20 31.9 33.9126.04 7.70 10.20 30.7 32.6136.11 7.50 10.20 31.5 33.4______________________________________
Manufacturing Example 5 (Comparative emulsion)
Using seven types of solution specified below, a silver bromoiodide emulsion (comparative) was prepared, wherein the emulsion comprised core/shell grains having an average size of 0.38 .mu.m and an average I content of 8.46 mol %, and an individual grain had the I contents of 15 mol %, 5 mol %, and 3 mol % in an order from core
______________________________________Solution A-5Ossein gelatin 28.6 g10% ethanol solution of PRONON 16.5 mTAI 247.5 mg56% aqueous acetic acid solution 72.6 ml28% aqueous ammonium solution 97.2 mlSeed emulsion N-1 equivalent to 0.1552 mole AgXDistilled water added to make total quantity 6600 mlSolution B-5Ossein gelatin 13 gKBr 460.2 gKI 113.2 gTAI 665 mgDistilled water added to make total quantity 1300 mlSolution C-5Ossein gelatin 17 gKBr 672.6 gKI 49.39 gTAI 870 mgDistilled water added to make total quantity 1700 mlSolution D-5Ossein gelatin 8 gKBr 323.2 gKI 13.94 gTAI 409 mgDistilled water added to make total quantity 800 mlSolution E-5AgNO.sub.3 1773.6 g28% aqueous ammonium solution 1470 mlDistilled water added to make total quantity 2983 mlSolution F-520% aqueous KBr solution amount needed for controlling pAgSolution G-556% aqueous acetic acid solution amount needed for controlling pH______________________________________
Using a mixer same as in Manufacturing Example 1, Solutions E-5 and B-5 were simultaneously added to Solution A-5 by a double jet method, and upon termination of adding B-5, C-5 was added. Then, upon termination of adding C-5, D-5 was added. During adding, pAg, pH and the rates of adding Solutions E-5, B-5, C-5 and D-5 were controlled as specified in Table 5.
PAg and pH were controlled by changing the flow rates of Solutions F-5 and G-5 by a variable flow rate roller tube pump.
After addition of solution E-5 was complete, adjustment of pH and pAg, desalination, washing and redispersing were performed in a manner identical to that of Manufacturing Example 1.
This emulsion was designated EM-5.
TABLE 5______________________________________Grain growth conditions (EM-5) Addition rate of solution (ml/min.)Time Solution Solution Solution Solution(min.) pH pAg E-5 B-5 C-5 D-5______________________________________0 9.00 8.55 9.8 9.37.85 8.08 8.55 30.7 29.211.80 8.63 8.55 44.9 42.717.33 8.25 8.55 61.4 58.419.23 8.10 8.55 63.5 60.422.19 7.88 8.55 56.6 53.828.33 7.50 8.55 41.2 39.8 39.836.61 7.50 9.38 31.9 34.140.44 7.50 9.71 30.6 37.145.14 7.50 10.12 34.6 57.845.97 7.50 10.20 37.3 36.357.61 7.50 10.20 57.3 55.8 55.863.08 7.50 10.20 75.1 73.166.63 7.50 10.20 94.0 91.4______________________________________
Manufacturing Example 6 (Comparative emulsion)
In a manner identical to that of Manufacturing Example 5, a silver bromoiodide emulsion (comparative) was prepared, wherein the emulsion comprised core/shell grains having an average size of 2.0 .mu.m and an average I content of 6.54 mol %, an individual grain had the I contents of 15 mol %, 5 mol % and 0 mol % in an order from a core.
______________________________________Solution A-6Ossein gelatin 46.55 g10% ethanol solution of PRONON 15 mlTAI 750 ml56% aqueous acetic acid solution 441 ml28% aqueous ammonium solution 703 mlSeed emulsion N-3 equivalent to 0.6778 mole AgXDistilled water added to make total quantity 12000 mlSolution B-6Ossein gelatin 15 gKBr 520.5 gKI 130.7 gTAI 1.2 gDistilled water added to make total quantity 1500 mlSolution C-6Ossein gelatin 20 gKBr 775.6 gKI 58.2 gTAI 1.6 gDistilled water added to make total quantity 2000 mlSolution D-6Ossein gelatin 20 gKBr 814 gTAI 1.6 gDistilled water added to make total quantity 2000 mlSolution E-6AgNO.sub.3 1575 g28% aqueous ammonium solution 1283 mlDistilled water added to make total quantity 2648 mlSolution F-6Same as F-5Solution G-6Same as G-5______________________________________
An emulsion was prepared at 50.degree. C. in the same conditions as those of Manufacturing Example 5, besides the grain growth conditions shown in Table 6.
This emulsion was designated Em-6.
TABLE 6______________________________________Grain growth conditions (EM-6) Addition rate of solution (ml/min.)Time Solution Solution Solution Solution(min.) pH pAg E-6 B-6 C-6 D-6______________________________________ 0 9.00 8.90 6.1 6.1 30.4 9.00 8.90 10.9 10.9 50.3 9.00 8.90 14.7 14.7 70.3 9.00 8.90 18.9 18.9 18.9 78.4 8.82 9.21 24.3 29.2 85.7 8.61 9.58 29.7 43.8 90.2 8.46 9.84 34.7 65.2 91.7 8.40 9.94 39.2 83.1 94.8 8.33 10.15 33.8 95.9 95.7 8.31 10.20 32.6 34.7109.7 8.02 10.20 31.9 33.9 33.9126.8 7.70 10.20 30.7 32.6136.1 7.50 10.20 31.5 33.4______________________________________
Manufacturing Example 7 (Comparative emulsion)
A silver bromoiodide emulsion (comparative) was prepared in the same manner as manufacturing Example 5, wherein the emulsion comprised the core/shell grains with an average size of 0.65 .mu.m, and an average I content of 7.16 mol %, and an individual grain had the I contents of 15 mol %, 5 mol % and 3 mol % in an order from a core. This emulsion was designated EM-7
The seen emulsion used was N-2.
Manufacturing Example 8
Using four types of solution specified below, AgI grains were prepared.
______________________________________Solution A-8Ossein gelatin 242.6 g10% ethanol solution of PRONON 14.6 mlSodium citrate 18.2 gKI 56.2 gDistilled water added to make total quantity 4.85 lit.AgNO.sub.3 876 gSolution B-8Distilled water added to make total quantity 1.47 lit.Solution C-8KI 891.9 gDistilled water added to make total quantity 1.47 lit.Solution D-8AgNO.sub.3 83.9 gDistilled water added to make total quantity 173 ml______________________________________
After Solution A-8 was poured into a reaction vessel and heated to 40.degree. C., stirring by a propeller agitator, solutions B-8 and C-8 were added in 30 minutes to form the AgI grains having an average grain of approx. 0.045 .mu.m.
Next, Solution D-8 was added to adjust pAg at 13. This emulsion was designated EM-8.
The suspension containing the AgI grains contained 0.709 mole of silver halide per liter.
Manufacturing Example 9
Using seven types of solution specified below, the core/shell type silver halide grains of the invention were prepared. The grains had an average grain size of 0.38 .mu.m, and an average I content of 8.46 mol %.
______________________________________Solution A-9Ossein gelatin 28.77 g10% ethanol solution of PRONON 16.5 ml0.5% aqueous TAI solution 49.5 mlWater added to make total quantity 5582 mlSolution B-9Seed emulsion N-1 equivalent to 0.1552 mole AgXSodium citrate 1.692 gWater added to make total quantity 761 mlSolution C-9AgNO.sub.3 1624 g28% aqueous ammonium solution 1325 mlWater added to make total quantity 2731 mlSolution D-9Ossein gelatin 30 gKBr 1249.5 g0.5% aqueous TAI solution 507 mlWater added to make total quantity 3000 mlSolution E-9AgI suspension prepared in Manufacturing 1245 mlExample 8 (containing AgX equivalent to0.8825 mole)Solution F-920% aqueous KBr solution amount needed for controlling pAgSolution G-956% aqueous acetic acid soltuion amount needed for controlling pH______________________________________
After Solution B-9 was stirred at 50.degree. C. for 60 minutes, it was added to Solution A-9 maintained at 40.degree. C. stirring by the same stirrer as used in Manufacturing Example 1. Next, 97 mol of 28% aqueous ammonium solution and 72.6 ml of 56% aqueous acetic acid Solution were added, and then, using Solutions F-9 and G-9, pH and pAg were adjusted to 9.0 and 8.55, respectively. Next Solutions C-9 and D-9 were added by a double-jet method, while controlling pAg, pH, and the flow rate of C-9 and D-9 as specified in Table 7.
Meanwhile, Solution E-9 was added, while controlling the flow rates as shown in Table 7. pAg and pH was controlled by F-9 and G-9 in the same manner as in Manufacturing Example 1.
After pAg and pH were adjusted as in Manufacturing Example 1, desalination, washing and dispersing were performed, and the total quantity was adjusted to 3000 ml. This emulsion was designated Em-9.
FIG. 5 is an electron micrograph of EM-9.
TABLE 7______________________________________Grain growth conditions (EM-9)______________________________________ Time (min.) Time (min.) Solution D-9 Solution E-9Time (min.) Flow rate Flow rateSolution C-9 (ml/min.) (ml/min.)______________________________________0.0 6 54 0.0 6.223.26 10.73 2.06 8.455.36 14.35 9.16 22.25 2.06 2.214.82 36.67 19.45 40.0517.66 41.45 21.10 37.76 4.28 30.919.55 41.90 36.65 22.51 6.18 40.928.32 27.34 38.93 23.13 8.08 50.933.75 22.69 45.69 40.28 10.13 62.938.74 20.49 46.02 24.19 12.10 74.542.62 20.64 59.65 40.71 13.00 79.344.29 21.78 62.73 47.64 14.00 85.354.91 33.94 65.22 55.20 15.25 91.860.31 43.07 65.70 56.9865.70 58.58 66.70 56.98 17.16 10.066.70 58.58______________________________________ Time (min.) pAg Time (min.) pH______________________________________0.0 8.55 0.0 9.0028.36 8.55 2.48 8.9632.39 8.98 5.93 8.8837.20 9.42 10.13 8.7242.40 9.87 15.46 8.3945.01 10.10 21.00 7.9646.01 10.20 25.79 7.6466.68 10.20 28.37 7.50 66.68 7.50______________________________________
Manufacturing Example 10
An emulstion was prepared in a manner identical to that of Manufacturing Example 9, except that Solution E-9 was added in one minute, following two minutes after starting of addition of Solution C-9.
This emulsion was designated EM-10.
Manufacturing Example 11
Using seven types of solution specified below, the core/shell type silver halide grains of the invention were prepared. The grains had an average size of 2.0 .mu.m and an average I content of 6.54% mol %.
______________________________________Solution A-11Ossein gelatin 46.55 g10% ethanol solution of PRONON 15 mlSeed emulsion N-3 amount equivalent to 0.6778 mole AgX56% aqueous acetic acid solution 441 ml28% aqueous ammonium solution 617 ml0.5% aqueous TAI solution 150 mlDistilled water added to make total quantity 12 lit.Solution B-11AgNO.sub.3 1575 g28% aqueous ammonium solution 1283 mlDistilled water added to make total quantity 2648 mlSolution C-11Ossein gelatin 50 gKBr 2082.5 g0.5% TAI soluticn 4 gDistilled water added to make total quantity 5000 mlSolution D-11AgI suspension prepared in Manufacturing 913 mlExample 8 (containing AgX equivalent to0.647 mole)Solution E-1120% aqueous KBr solution amount needed for controlling pHSolution G-1156% aqueous acetic acid solution amount needed for controlling pAg______________________________________
Solution E-11 and G-11 were added to Solution A-11 maintained at 50.degree. C. stirring by the same stirrer as used in Manufacturing Example 1 to adjust pH and PAg to 9.0 and 8.9, respectively. Next, Solutions B-11 and C-11 were added by a double jet method, while controlling pH, pAg, and the flow rates of B-11 and C-11 as specified in Table 8.
Solution D-11 was added while controlling the flow rate as shown in Table 8 and pH and pAg was controlled by E-11 and G-11 in the same manner as in Manufacturing Example 1.
After pAg, and pH were adjusted as in Manufacturing Example 1, desalination, washing and dispersing were performed, and the total amount was adjsuted to 3000 ml.
This emulsion was designated EM-11. FIG. 6 is an electron micrograph of EM-11.
TABLE 8______________________________________Grain growth conditions (EM-11)______________________________________Time (min.) flow Time (min.) flow Time (min.) flowrate of Solution rate of Solution rate of SolutionB-11 (ml/min.) C-11 (ml/min.) D-11 (ml/min.)______________________________________ 0.0 5.2113 0.0 5.2357 0.0 4.486022.1 7.9061 22.1 7.7449 22.1 6.809535.6 9.9313 69.4 15.6195 35.6 8.552869.4 15.7444 70.7 19.7068 69.4 13.556970.7 17.9139 77.40 25.8352 70.7 4.581772.1 18.9060 84.2 36.3375 73.5 5.059388.3 27.6167 88.3 46.8139 78.7 5.713991.0 30.8748 90.2 56.0684 82.1 6.348592.7 34.9538 92.7 78.8470 87.3 6.901096.9 28.8917 96.0 91.4597 90.2 7.5611111.8 28.5231 96.9 30.7331 91.9 8.3604112.7 29.9769 111.8 30.3826 92.7 8.9565127.0 29.5860 112.7 31.6514 95.1 7.9554137.4 30.5073 137.4 32.4166 96.9 7.4001139.3 30.8073 139.3 32.4166 111.8 7.3320______________________________________Time (min.) pH Time (min.) pAg______________________________________ 0.0 9.0000 0.0 8.900070.7 9.0000 70.7 8.900072.1 8.9700 72.1 8.952073.5 8.9400 73.5 9.004074.9 8.9100 74.9 9.056076.2 8.8800 76.2 9.108077.4 8.8500 77.4 9.160078.7 8.8200 78.7 9.212079.8 8.7900 79.8 9.264081.0 8.7600 81.0 9.316082.1 8.7300 82.1 9.368083.2 8.7000 83.2 9.420085.3 8.6400 84.2 9.472087.3 8.5800 85.3 9.524088.3 8.5500 86.3 9.576089.2 8.5200 87.3 9.628090.2 8.4900 88.3 9.680091.0 8.4600 89.2 9.732091.9 8.4300 90.2 9.784092.7 8.4000 91.0 9.836094.3 8.3640 91.9 9.888095.1 8.3460 92.7 9.940096.9 8.3100 93.5 9.9920106.2 8.1300 94.3 10.0440111.8 8.0220 95.1 10.0960112.7 8.0040 96.0 10.1480118.4 7.8960 96.9 10.2000131.8 7.6440 139.2 10.2000135.5 7.5720139.2 7.5000______________________________________
Manufacturing Example 12 (Comparative emulsion)
In a manner identical to that of Manufacturing Example 5, a silver bromoiodide emulsion was prepared, wherein the emulsion comprised the core/shell grains with an average size of 0.27 .mu.m, and an average I content of 8.46 mol %. An individual grain had I contents of 3 mol %, 5 mol % and 15 mol % in an orders from an outermost shell. The seed emulsion was N-1. This emulsion was designated EM-12.
Manufacturing Example 13
Using the following solutions, a silver bromoiodide emulsion (comparative) was prepared, wherein the emulsion comprised the grains with an average size of 0.38 .mu.m and an average I content of 2 mol %, and an I content was uniformly distributed in the individual silver halide grains.
______________________________________Solution A-13Ossein gelatin 28.6 g10% ethanol solution of PRONON 16.5 mlTAI 247.5 mg56% aqueous acetic acid solution 72.6 ml28% aqueous ammonium solution 97.2 mlSeed emulsion N-1 equivalent to 0.1552 mole AgXDistilled water added to make total quantity 6600 mlSolution B-13Ossein gelatin 38.0 gKBr 1551.0 gKI 44.2 gTAI 1944 mgDistilled water added to make total quantity 3800 mlSolution C-13AgNO.sub.3 1773.6 g28% aqueous ammonium solution 1470 mlDistilled water added to make total quantity 2983 mlSolution D-1320% aqueous KBr solution amount needed for controlling pAgSolution E-1356% aqueous acetic acid solution amount needed for controlling pH______________________________________
Using the same mixer as in Manufacturing Example 1, Solution B-13 and C-13 were simultaneously added to Solution A-13 by a double jet method at 40.degree. C. During addition, pAg, pH and the flow rates of Solutions B-13 and C-13 were controlled as shown in Table 9.
pAg and pH were controlled by changing the flow rates of Solutions D-13 and E-13 by a variable flow rate roller tube pump.
After addition of solution C-13 was completed adjustment of pH and pAg, desalination, washing and redispersing were performed in a manner identical to that of Manufacturing Example 1. This emulsion was designated EM-13.
TABLE 9______________________________________Grain growth conditions (EM-13) Addition rate of solution (ml/min.)Time (min.) pH pAg Solution C-13 Solution B-13______________________________________0 9.00 8.55 9.8 9.37.85 8.81 8.55 30.7 29.211.80 8.63 8.55 44.9 42.717.33 8.25 8.55 61.4 58.419.23 8.10 8.55 63.5 60.422.19 7.88 8.55 56.6 53.828.33 7.50 8.55 41.2 39.836.61 7.50 9.38 31.9 34.140.44 7.50 9.71 30.6 37.145.14 7.50 10.12 34.6 57.845.97 7.50 10.22 37.3 36.357.61 7.50 10.20 57.3 55.863.08 7.50 10.20 75.1 73.166.63 7.50 10.20 94.0 91.4______________________________________
Manufacturing Example 14 (Comparative emulsion)
A monodispersed AgBrI emulsion was prepared in the same manner as manufacturing Example 13, wherein the emulsion comprised the grains with an average size of 0.27 .mu.m and an average I content of 8.46 mol %, and an I content was uniformly distributed in the individual silver halide grains. The seed emulsion was N-1. This emulsion was designated EM-14.
Manufacturing Example 15
A monodispersed AgBrI emulsion was prepared in same manner as Manufacturing Example 13, wherein the emulsion comprised the grains with an average size of 0.65 .mu.m, and an average I content of 2 mol %, and an I content was uniformly distributed in the individual silver halide grains. The seed emulsion used was N-1. This emulsion was designated EM-15.
Manufacturing Example 16 (Comparative emulsion)
A silver bromoiodide emulsion (comparative) was prepared in the same manner as Manufacturing Example 12, wherein the emulsion comprised the core/shell grains with an average size of 0.65 .mu.m, and an average I content of 7.16 mol %, and the individual grains had the I contents of 15 mol %, 5 mol %, and 3 mol % in an order from a core. This emulsion was designated EM-16.
The seed emulsion was N-1.
Manufacturing Example 17 (Comparative emulsion)
A monodispersed AgBrI emulsion was prepared in the same manner as Manufacturing Example 13, wherein an average AgI content was 2 mol % and an average grain size was 0.27 .mu.m. An I content was uniformly distributed in the individual grains. The seed emulsion was N-1.
This emulsion was designated EM-17.
Manufacturing Example 18 (Comparative emulsion)
A AgBrI emulsion was prepared in the same manner as Manufacturing Example 13, wherein an average I content was 2 mol % and an average grain size was 0.65 .mu.m. An I content was uniformly distributed in the individual grains. This was designated EM-18.
The seed emulsion was N-2.
Manufacturing Example 19
A monodispersed AgBrI emulsion was prepared in the same manner as Manufacturing Example 17, wherein an average I content was 2 mol %, an average grain size was 2.0 .mu.m. An I content was uniformly distributed in the individual grains. This emulsion was designated EM-19.
Manufacturing Example 20
Emulsions EM-20 and -21 were prepared in the manner identical to that of Manufacturing Example 1, except that the seed emulsion N-1 used for Manufacturing Example 1 was replaced with N-4 and N-5.
Manufacturing Example 21
A silver iodobromide emulsion EM-22 was prepared in the same manner as Manufacturing Example 13, wherein an average I content was 2 mol % and an average grain size was 0.48 .mu.m. The seed emulsion was N-1.
Manufacturing Example 22
Emulsion EM-23 was prepared in the manner identical to that of Preparation Example 1, except that the seed emulsion used for Manufacturing Example 1 was replaced with an emulsion of N-1 and N-4 blended at a mole ratio of 1:1.
Table 10 summarizes the data of EM-1 through EM-23.
TABLE 10______________________________________ Average I Average content Seed AgI Re-EM-No. size .mu.m mol % emulsion distribution mark______________________________________EM-1 0.38 8.46 N-1 * .smallcircle.EM-2 0.27 8.46 N-1 * .smallcircle.EM-3 0.65 7.16 N-2 * .smallcircle.EM-4 2.0 6.54 N-3 * .smallcircle.EM-5 0.38 8.46 N-1 15:5:3 xEM-6 2.0 6.54 N-3 15:5:0 xEM-7 0.65 7.16 N-2 15:5:3 xEM-8 0.045 100 -- --EM-9 0.38 8.46 N-1 * .smallcircle.EM-10 1.11 6.54 N-3 * .smallcircle.EM-11 2.0 6.54 N-3 15:5:0 .smallcircle.EM-12 0.27 8.46 N-1 15:5:3 xEM-13 0.38 2 N-1 Uniform xEM-14 0.27 8.46 N-1 Uniform xEM-15 0.65 2 N-1 Uniform xEM-16 0.65 7.16 N-1 15:5:3 xEM-17 0.27 2 N-1 Uniform xEM-18 0.65 2 N-2 Uniform xEM-19 2 2 N-1 Uniform xEM-20 0.38 8.46 N-4 * .smallcircle.EM-21 0.38 8.46 N-5 * .smallcircle.EM-22 0.48 2 N-1 Uniform xEM-23 0.38 8.46 N-1,4 * .smallcircle.______________________________________ .smallcircle.: Invention x: Comparison *X-ray diffraction analysis revealed the presence of a high I phase containing 30 to 40 mol % I.
EXAMPLE 1
Each of EM-1, EM-5 and EM-13 was subjected to gold/sulfur sensitization, and, then to spectral sensitization by adding the sensitizing dyes as specified in Table 11. Next, each emulsion was stabilized by addition of TAI and 1-phenyl-5-mercaptotetrazole. To each emulsion were added the conventional photographic additives such as a spreading, agent, a hardener etc. to prepare a coating solution. Using a conventional method, the coating solution was coated and dried on a subbed film base to prepare the respective samples.
Each of the preceding samples was evaluated in adsorbability of sensitizing dye as follows;
Each sample was divided into two pieces, one of which was allowed to stand in a refrigerator and the other, at the conditions of 50.degree. C. and 80% RH, respectively for 2 days.
A transmission density of each sample was evaluated by a spectrophotometer, and an amount of a sensitizing dye desorbed at 50.degree. C. and 80% RH was determined.
The degree of desorbability (Q) of sensitizing dye was determined by the following equation:
Q=(1-D.sub.1 /D.sub.0).times.100
where;
D.sub.0 : transmission density at max of a sample stored in the refrigerator
D.sub.1 : transmission density at .lambda.max of a sample allowed to stand at 50.degree. C., 80% RH.
The data of each sample are summarized in Table 11.
A value of desorbability summarized in Table 11 is the relative value to those of Sample No. 1-1 for Sample No. 1-2 and 1-3, Sample No. 1-4 for Sample No. 1-5, Sample No. 1-6, for Sample No. 1-7 and Sample No. 1-8 for Sample No. 1-9.
TABLE 11______________________________________ Sensitizing SensitizingSam- Emulsion dye (mg/ dye (mg/ Desorb-ple No. mol Ag X) mol Ag X) ability Remark______________________________________1-1 EM-13 B-101 (550) B-102 (340) 100 x1-2 EM-5 B-101 (550) B-102 (340) 86 x1-3 EM-1 B-101 (550) B-102 (340) 60 .smallcircle.1-4 EM-5 B-101 (550) -- 100 x1-5 EM-1 B-101 (550) -- 68 .smallcircle.1-6 EM-5 A-3 (550) -- 100 x1-7 EM-1 A-3 (550) -- 56 .smallcircle.1-8 EM-13 A-3 (550) A-2 (340) 100 x1-9 EM-1 A-3 (550) A-2 (340) 48 .smallcircle.______________________________________
As can be found from the data in Table 11, the samples containing Em-1 of the invention are remarkably superior in desorbability of a sensitizing dye to those of the comparative emulsion (EM-5 and EM-13) containing the same sensitizing dyes as the samples of the invention, and, the samples containing the sensitizing dyes represented by the preceding Formula [A] were especially superior. ##STR34##
EXAMPLE 2
Each of EM-1 and EM-5 was subjected to gold/sulfur sensitization, and then to blue-spectral sensitization by adding 350 mg of each sensitizing dye (A-9) and sensitizing dye (A-3) per mol Ag. Next, TAI and 1-phenyl-5-mercaptotetrazole were added the for stablization. To each emulsion were added the conventional photographic additives such as a spreading agent a hardener etc. to prepare a coating solution. Using a conventional method, each coating solution was coated and dried on a subbed film base to prepare sample Nos. 2-1 and 2-2.
The yellow coupler shown in Table 12 was dissolved in a mixture solvent comprising ethyl acetate and dioctyl phthalate (DOP) of weight equal to that of the coupler, and the mixture was emulsified in an aqueous gelatin solution. Then, the emulsion was added to each of EM-1 and EM-5, which were respectively coated and dried in the same manner as the preceding samples to obtain Sample Nos. 2-3 and 2-4.
Each sample was subjected to wedge-exposure via a blue-filter. Then, Sample Nos. 2-1 and 2-2 were subjected to a 90 seconds processing by the automatic developing machine Model KX-500 (Konica Corporation) using the following processing solutions, in the following processing (I).
The samples allowed to stand for 2 days in an atmosphere of 50.degree. C. and 80% RH were exposed, developed and stored for 2 days, and then evaluated likewise.
______________________________________Processing (I)______________________________________Developing 25 sec. 35.degree. C.Fixing 25 sec.Washing 25 sec.Drying 15 sec.______________________________________
The compositions of the processing solutions used in the respective processing steps are as follows:
______________________________________Developing Solution______________________________________Potassium sulfite 55.0 gHydroquinone 25.0 g1-phenyl-3-pyrazolydone 1.2 gBoric acid 10.0 gSodium hydroxide 21.0 gTriethylyne glycol 17.5 g5-methylbenzotriazole 0.07 g5-nitroindazole 0.14 g1-phenyl-5-mercaptotetrazole 0.015 gGlutaraldehyde hydro bisulfite 15.0 gGlacial acetic acid 16.0 gPotassium bromide 4.0 gTriethylenetetraminehexaacetic acid 2.5 g______________________________________
Water was added to make total quantity 1 liter, and pH was adjusted to 10.20.
______________________________________Fixing Solution______________________________________Disodium ethylenediaminetetraacetate 5.0 gTartaric acid 3.0 gAmmonium thiosulfate 130.9 gSodium sulfite anhydride 7.3 gBoric acid 7.0 gAcetic acid (90 wt %) 5.5 gSodium acetate trihydrate 25.8 gAluminum sulfate; 18H.sub.2 O 14.6 gSulfuric acid (50 wt %) 6.77 g______________________________________
Water was added to make total quantity 1 liter, and pH was adjusted to 4.20.
Sample Nos. 2-3 and 2-4 were exposed likewise, and subjected to the following processing (II).
The samples allowed to stand for 2 days at 50.degree. C. and 80% RH were processed likewise, and evaluated.
______________________________________Processing (II) 38.degree. C.______________________________________Color developing 3 min. 15 sec.Bleaching 6 min. 30 sec.Washing 3 min. 15 sec.Fixing 6 min. 30 sec.Washing 3 min. 15 sec.Stabilizing 1 min. 30 sec.Drying______________________________________
The compositions of the processing solutions used in the respective processing steps are as follows.
______________________________________Color developing solution4-amino-3-methyl-N-ethyl-N-(.beta.-hydroxyethyl)- 4.75 ganiline sulfateSodium sulfite anhydride 4.25 gHydroxyl amine.1/2 sulfate 2.0 gPotassium carbonate anhydride 37.5 gPotassium bromide 1.3 gTrisodium nitrilotriacetate (monohydrate) 2.5 gPotassium hydroxide 1.0 gWater was added to make total quantity 1 liter.Bleaching solutionFerric ammonium ethylenediaminetetraacetate 100.0 gDiammonium ethylenediaminetetraacetate 10.0 gPotassium bromide 150.0 gGlacial acetic acid 10.0 g______________________________________
Water was added to make total quantity 1 liter, and pH was adjusted to 6.0 using aqueous ammonium solution.
______________________________________Fixing solution______________________________________Ammonium thiosulfate 175.0 gAmmonium sulfite anhydride 8.6 gSodium metasulfite 2.3 g______________________________________
Water was added to make total quantity 1 liter, and pH was adjusted to 6.0 using acetic acid.
______________________________________Stabilizing solution______________________________________Formalin (37% aqueous solution) 1.5 mlKonidax (Konica Corporation) 7.5 ml______________________________________
Water was added to make total quantity 1 liter.
The sensitivity, maximum density(Dmax), graininess and storage stability of each sample were evaluated.
The evaluation results are summarized in Table 12.
TABLE 12__________________________________________________________________________ Processing after 2 day-standing at Instant 50.degree. C./80% RH processing RelativeSam- Coupler Relative sensitivityple Emulsion (mol %/ sensitivity (S.sub.1)No. No. mol AgX) Dmax (S.sub.1) Blue filter Remark__________________________________________________________________________2-1 EM-1 -- 114 120 112 .smallcircle.2-2 EM-5 -- 100 100 100 x2-3 EM-1 Y4-9 (20.0) 122 130 225 .smallcircle.2-4 EM-5 Y4-9 (20.0) 100 100 100 x__________________________________________________________________________ .smallcircle.: Invention x: Comparison
Sensitivity values in Table 12 are expressed by the inverses of exposure corresponding to fog densities +0.1 in the samples either containing or not containing a coupler, and are the relative sensitivity values (S.sub.1) to those of sample Nos. 2-2 and 2-4, which are set at 100.
Dmax values are the relative Dmax values to those of samples Nos. 2-2 and 2-4, which are set at 100.
As can be found from Table 12, the samples containing the emulsion of the invention (EM-1) are superior to those containing comparative emulsion (EM-5) in sensitivity in either instant after-storage processing and in Dmax. The sample containing a coupler was especially advantageous. The effect of the invention was also observed in the samples containing Y-23 or Y.sub.4 -14 instead of Y.sub.4 -9.
Graininess was evaluated by visual observation on photographic prints where each sample was enlarged 10 times, and sample Nos. 2-2 and 2-3 were found superior to sample Nos. 2-1 and 2-4.
The preceding effect was observed on each of the samples, wherein the amounts of sensitizing agent (A-9) and (A-3) were decreased to 60 wt % in Sample Nos. 2-1 and 2-3.
EXAMPLE 3
In the manner identical to that of Example 2, EM-3 and EM-7 were subjected to chemical and spectral sensitizations to prepare green-sensitive emulsions. To some of the emulsions were added magenta couplers dissolved in equivalent weight of DOP. Thus, sample Nos. 3-1 through 3-6 were prepared. Sensitizing dyes (A-18) and (A-34) were added by 300 mg and 30 mg per mol of Ag, respectively, for spectral sensitization.
Each of the samples was subjected to exposing and developing in the same manner as Example 2, wherein exposure was performed via a yellow filter. Sample Nos. 3-1 and 3-2 were processed by Processing (I) in Example 2; Sample Nos. 3-3 through 3-6 by Processing (II) in Example 2.
The results are summarized in Table 13. The sensitivities and Dmax of the samples containing no couplers are the relative values (S.sub.1) and Dmax to those of Sample No. 3-2, and the sensitivities and Dmax of the samples containing couplers to those of Sample Nos. 3-4 and 3-6, which are set at 100, respectively.
TABLE 13__________________________________________________________________________ Processing after 2 Instant day-standing at processing 50.degree. C./80% RHSam- Coupler Relative Relativeple Emulsion (mol %/ sensitivity sensitivityNo. No. mol AgX) Dmax (S.sub.1) (S.sub.1) Remark__________________________________________________________________________3-1 EM-3 -- 113 140 131 .smallcircle.3-2 EM-7 -- 100 100 100 x3-3 EM-3 M-2 (17.0) 125 150 236 .smallcircle.3-4 EM-3 M4-3 (17.0) 100 147 278 .smallcircle.3-5 EM-7 M-2 (17.0) 127 100 100 x3-6 EM-7 M1-3 (17.0) 100 100 100 x__________________________________________________________________________ .smallcircle.: Invention x: Comparison
As can e found from the results in Table 13, the sensitivities, Dmax and storage stability are improved to a large extent in the samples containing EM-3 of the invention and especially in the samples containing a coupler. Graininess was evaluated by the same method as Example 2 and sample Nos. 3-1, 3-13 and 3-6 were superior to samples Nos. 3-2, 3-4 and 3-5, respectively.
EXAMPLE 4
In the manner identical to that of Example 2, EM-4 and EM-6 were subjected to chemical sensitization, and then to spectralred sensitization by adding sensitizing dyes (A-57) and (A-56) by 20 mg and 2mg, respectively. To some of these emulsions was added a cyan coupler specified in Table 14 (dissolved in an equivalent weight of DOP) to prepare the samples. Each sample was subjected to exposing and developing in the same manner as Example 3. Sample Nos. 4-1 to 4-4 were developed by Processing (I) shown in Example 2 and the photographic densities were evaluated. The sensitivities and Dmax of Sample Nos. 4-1 and 4-3 are the relative sensitivity values (S.sub.1) and Dmax to those of Sample Nos. 4-2 and 4-4, which are set at 100, respectively.
Table 14 summarizes the evaluation results.
TABLE 14__________________________________________________________________________ Processing after 2 Instant day-standing at processing 50.degree. C./80% RHSam- Coupler Relative Relativeple Emulsion (mol %/ sensitivity sensitivityNo. No. mol AgX) Dmax (S.sub.1) (S.sub.1) Remark__________________________________________________________________________4-1 EM-4 -- 111 120 116 .smallcircle.4-2 EM-6 -- 100 100 100 x4-3 EM-4 C-8 (8.4) 119 130 233 .smallcircle.4-4 EM-6 C-8 (8.4) 100 100 100 x__________________________________________________________________________ .smallcircle.: Invention x: Comparison
It is apparent from the results in this table that the samples containing Emulsion EM-4 of the invention are remarkably improved in sensitivity, regardless of before or after storage, and Dmax before storage, and that the sensitivity of the sample containing a coupler is further improved to a large extent. Graininess was evaluated by the same method as Example 2 and Sample Nos. 4-1 and 4-3 were superior to Sample Nos. 4-2 and 4-4, respectively.
The effect on the invention was observed in each of the samples, wherein 50 mg of sensitizing dye (A-57) and 27 mg of sensitizing dye (56 ) each per mol of AgX were added to Sample Nos. 4-1 and 4 -3.
EXAMPLE 5
EM-1, EM-5, EM-9 and EM-10 were subjected to gold/sulfur sensitization, and then, to spectral green-sensitization by adding sensitizing dye (A-22) and (A-34) by 550 mg and 340 mg per tool Ag, respectively. Next, each emulsion was stabilized with TAI and 1-phenyl-5-methylmercaptotetrazole.
Magenta Coupler (M.sub.4 -4) dissolved in a mixture solvent of ethyl acetate and dinonyl phthalate (DNP), was dispersed in an aqueous gelatin solution. Then, the conventional photographic additives such as a spreading agent, a hardener etc. were added to each of the preceding emulsions to prepare the coating solutions. Each of the coating solutions was coated and dried on a subbed film base by a conventional method. Thus, Sample Nos. 5-1 through 5-4 were prepared.
The coated amounts of the respective components per square meter are shown below.
______________________________________Emulsion (converted to silver amount) 1 gMagenta Coupler (M.sub.4 -4) 0.4 gDNP 0.4 gGelatin 0.12 g______________________________________
Each sample was subjected to wedge exposure by a conventional method, and processed by Processing (II) in Example 2 with the same processing solutions.
The specific curves of Sample Nos. 5-1 and 5-2 are shown in FIG. 7.
The specific curve 1 in FIG. 7 is that of Sample No. 5-1 (EM-1, invention) and the curve 2 is that of Sample No. 5-2 (EM-5, comparative). Furthermore, Sample Nos. 5-3 and 5-4 exhibited the specific curves similar to that of Sample No. 5 -1.
S.sub.1 sensitivity and S.sub.2 sensitivity are summarized in Table 15.
S.sub.2 sensitivity is an inverse of an exposure that provides the density of fog density +0.3, and is the relative value to Sample No. 5-2, which is set at 100.
TABLE 15______________________________________ CharacteristicsSample S.sub.1 sensitivity S.sub.2 sensitivity______________________________________Sample No. 5-1 126 141(EM-1, invention)Sample No. 5-2 100 100(EM-5, comparison)Sample No. 5-3 126 138(EM-9, invention)Sample No. 5-4 125 139(EM-10, invention)______________________________________
It is apparent from the data in Table 15 and FIG. 7 that the photosensitive materials containing silver halide grains prepared by the manufacturing method of the invention is extremely sensitive, have high Dmax and comprise hard gradation, which suggests that differences of photographic characteristic among grains are small.
Next, graininess of Sample Nos. 5-1 through 5-4 was evaluated visually on a printed image enlarged 10 times at a density point of fog density +0.3.
It was found that the samples of the invention were far superior to Comparative Example No. 5-2 in image quality.
Effect of the present invention was observed about each of the samples which contains silver halide grains prepared by the same method as EM-9, except that AgI grains in Solution E-9 was replaced with AgBrI grains (I content 40 mol %, average grain size 0.05.mu.) and the samples which contains silver halide grains prepared by the same method as EM-9, except that 10 mol % of AgI grains in Solution E-9 was decreased and 10 mol % of KBr in Solution D-9 was replaced with KI.
EXAMPLE 6 (COMPARISON OF 2.0 .mu.M GRAINS)
The samples were prepared in the manner identical to that of Example 5, except that the emulsion in Example 5 was replaced with EM-4, EM-6 and EM-11, and that the sensitizing dye was substituted as below.
The amount of sensitizing dye is per mol of silver.
______________________________________Sensitizing dye (A-23) 20 mgSensitizing dye (A-20) 15 mg______________________________________
The samples were exposed and developed in the same manner as Example 5.
The specific curves are shown in FIG. 8.
The specific curve 3 in FIG. 8 is that of Sample No. 6-1 (EM-4, invention); curve 4 is that of Sample No. 6-2 (EM-6, comparative); and curve 5 is that of Sample No. 6-3 (EM-11, invention).
S.sub.1 sensitivity and S.sub.2 sensitivity are summarized in Table 16.
TABLE 16______________________________________ CharacteristicsSample S.sub.1 sensitivity S.sub.2 sensitivity______________________________________Sample No. 6-1 120 145(EM-4, invention)Sample No. 6-2 100 100(EM-6, comparison)Sample No. 6-3 120 142(EM-11, invention)______________________________________
It is apparent from the data in Table 16 and FIG. 8 that the results obtained with 2.0 .mu.m AgX grains were similar to those of Example 5. Effect of the present invention was observed in each of the samples where the amount of sensitizing dye (A-23) was increased to 40 mg and that of sensitizing dye (A-20) was decreased to 30 mg in sample Nos. 6-1 and 6-3. Next, the desorbability of sensitizing dye of Sample Nos. 6-1 through 6-3 was evaluated by the same method as Example 1.
The evaluation results are summarized in Table 17.
TABLE 17______________________________________ Sensitizing dye desorbability______________________________________Sample No. 6-1 (invention) 21%Sample No. 6-2 (comparison) 35%Sample No. 6-3 (invention) 18%______________________________________
As apparent from the results in the table, the samples of the invention showed less desorbability of sensitizing dyes, and, apparently, the silver halide emulsions of the invention are more prone to adsorb a sensitizing dye.
EXAMPLE 7
Sample Nos. 7-1 through 7-17 were prepared by replacing EM-1, A-9, A-3, Y.sub.4 -9 and DOP in sample No. 2-3 with emulsions, sensitizing dyes Y-5, and DNP as specified in Table 18.
The coated amounts of the respective components per square meter are shown below.
______________________________________Emulsion (converted to silver amount) 1 gCoupler (Y-5) 0.4 gDNP 0.4 gGelatin 0.12 g______________________________________
Each sample was subjected to wedge exposure with blue light according to a conventional method, and processed in the manner identical to that of Sample No. 2-3 by Processing (II).
The processed samples were evaluated for sensitivity (S.sub.1), adsorbability of sensitizing dye and RMS granularity. The results are summarized in Table 18. The sensitivity of each sample is the relative value to those of Sample No. 7-2 for Sample Nos. 7-1 through 7-3, Sample No. 7-4 for Sample No. 7-5, Sample No. 7-6 for Sample Nos. 7-7 through 7-9, and Sample No. 7-10 through 7-17, which are set at 100, respectively.
The RMS granularity of each sample is a value obtained by multiplying 1000 times the density variation observed by scanning an area of a density (fog density +1.2) by a microdensitometer with spherical scanning diameter of 25 .mu.m.
TABLE 18__________________________________________________________________________Sample Sensitizing dye Sensitizing dye Desorba- Granu- RelativeNo. Emulsion (mg/mol AgX) (mg/mol AgX) bility larity sensitivity Remark__________________________________________________________________________7-1 EM-13 B-101 (550) B-102 (340) 58 40 50 x7-2 EM-5 B-101 (550) B-102 (340) 50 45 100 x7-3 EM-1 B-101 (550) B-102 (340) 35 35 100 .smallcircle.7-4 EM-5 B-101 (550) -- 57 44 100 x7-5 EM-1 B-101 (550) -- 39 30 100 .smallcircle.7-6 EM-5 A-3 (550) -- 45 46 100 x7-7 EM-1 A-3 (550) -- 25 26 118 .smallcircle.7-8 EM-1 A-2 (550) -- 29 27 123 .smallcircle.7-9 EM-1 A-4 (550) -- 25 25 108 .smallcircle.7-10 EM-13 A-3 (550) A-2 (340) 50 35 50 x7-11 EM-5 A-3 (550) A-2 (340) 40 45 100 x7-12 EM-1 A-3 (550) A-2 (340) 24 26 117 .smallcircle.7-13 EM-1 A-4 (550) A-1 (340) 20 25 121 .smallcircle.7-14 EM-1 A-14 (550) A-3 (340) 25 27 117 .smallcircle.7-15 EM-1 A-5 (550) A-6 (340) 20 27 113 .smallcircle.7-16 EM-1 A-9 (550) A-10 (340) 25 28 113 .smallcircle.7-17 EM-1 A-12 (550) A-7 (340) 28 27 117 .smallcircle.__________________________________________________________________________ .smallcircle.: Invention x: Comparison
It is apparent from the data in Table 18 that the samples of the invention excel in sensitivity, desorbability of sensitizing dye and granularity, and that those having a sensitizing dye represented by Formula [A] are particularly excellent.
EXAMPLE 8
The samples were prepared in the manner identical to that of Sample No. 7-1 in Example 7, except that coupler Y-5 was replaced with M.sub.4 -4, and emulsion and sensitizing dye were replaced as specified in Table 19, and that exposure was made by green light instead of blue light. Next, sensitivity, RMS granularity and adsorbability of sensitizing dye were evaluated.
The sensitivity of each sample is the relative value to those of Sample No. 8-2 for Sample Nos. 8-1 through 8-3, Sample No. 8-4 for Sample No. 8-5, Sample No. 8-6 for Sample Nos. 8-7 and 8-8, and Sample No. 8-10 for Sample Nos. 8-9 through 8-23, which are set at 100, respectively.
TABLE 19__________________________________________________________________________Sample Sensitizing dye Sensitizing dye Desorba- Granu- RelativeNo. Emulsion (mg/mol AgX) (mg/mol AgX) bility larity sensitivity Remark__________________________________________________________________________8-1 EM-17 B-103 (550) B-104 (340) 55 40 55 x8-2 EM-12 B-103 (550) B-104 (340) 55 46 100 x8-3 EM-2 B-103 (550) B-104 (340) 45 30 100 .smallcircle.8-4 EM-12 B-103 (550) -- 60 45 100 x8-5 EM-2 B-103 (550) -- 47 35 103 .smallcircle.8-6 EM-12 A-23 (550) -- 40 44 100 x8-7 EM-2 A-23 (550) -- 27 24 118 .smallcircle.8-8 EM-2 A-113 (550) -- 26 27 123 .smallcircle.8-9 EM-17 A-23 (550) A-20 (340) 40 37 53 x8-10 EM-12 A-23 (550) A-20 (340) 40 45 100 x8-11 EM-2 A-23 (550) A-20 (340) 25 28 118 .smallcircle.8-12 EM-2 A-75 (550) A-20 (340) 20 24 122 .smallcircle.8-13 EM-2 A-22 (550) A-34 (340) 20 23 114 .smallcircle.8-14 EM-2 A-18 (550) A-34 (340) 23 27 110 .smallcircle.8-15 EM-2 A-17 (550) A-35 (340) 27 25 114 .smallcircle.8-16 EM-2 A-16 (550) A-30 (340) 25 23 110 .smallcircle.8-17 EM-2 A-23 (550) A-54 (340) 20 25 110 .smallcircle.8-18 EM-2 A-18 (550) A-55 (340) 28 26 106 .smallcircle.8-19 EM-2 A-31 (550) A-18 (340) 29 25 110 .smallcircle.8-20 EM-2 A-32 (550) A-17 (340) 22 24 111 .smallcircle.8-21 EM-2 A-17 (550) A-47 (340) 24 26 113 .smallcircle.8-22 EM-2 A-26 (550) A-42 (340) 25 23 114 .smallcircle.8-23 EM-2 A-23 (550) A-118 (340) 15 24 126 .smallcircle.__________________________________________________________________________ .smallcircle.: Invention x: Comparison ##STR35##
As can be found from the data in Table 19, the silver halide emulsion of the invention contained in a green-sensitive emulsion layer is less prone to desorb a sensitizing dye, and has good granularity, and especially, the samples containing sensitizing dyes represented by Formula [A] are excellent in every criterion, i.e. sensitivity, adsorbability of sensitizing dye and granularity.
Further, the effect of the present invention was preserved in each of the samples, even when the amount of sensitizing dye was decreased to 50 wt. % in sample Nos. 8-1 to 8-23.
In addition, the effect of the invention was reserved in the other two samples which contain silver halide grains with an average size of 0.27 .mu.m and an average I content of 8.46 mol. %, and prepared by the same method as EM-2, except that AgI grains with an average size of 0.05 .mu.m with AgI grains with an average size of 0.2 .mu.m and 0.5 .mu.m, respectively, each prepared from Solution A-2 and C-2.
EXAMPLE 9
The samples were prepared in the manner identical to that of Example 8, except that Emulsion EM-2 with EM-4, EM-12 was replaced with EM-6, EM-17 with EM-19 and the amount of sensitizing dye was decreased to 50 wt.% of that of Sample Nos. 8-1 to 8-23. Each sample was evaluated as well for sensitivity, RMS granularity, and adsorbability of sensitizing dye.
Even in the larger size silver halide grains with an average size of 2.0 .mu.m, the samples containing the silver halide emulsions of the invention were improved in sensitivity, adsorbability of sensitizing dye and granularity, and these results were comparable to those of the emulsions in Example 8 containing AgX grains with an average size of 0.27 .mu.m.
EXAMPLE 10
The samples were prepared in the manner identical to that of Example 7, except that coupler Y-5 was replaced with coupler C.sub.4 -33, and emulsions and sensitizing dyes were replaced as specified in Table 20, and that exposure was performed with red light. The samples were evaluated as well.
The sensitivity of each sample is the relative value to those of Sample No. 10-2 for Sample No. 10-1 through 10-3, Sample No. 10-4 for Sample No. 10-5 Sample No. 10-7 for Sample Nos. 10-7 through 10-8, and Sample No. 10-10 for Sample Nos. 10-9 through 10-19, which are set at 100, respectively.
TABLE 20__________________________________________________________________________Sample Sensitizing dye Sensitizing dye Desorba- Granu- RelativeNo. Emulsion (mg/mol AgX) (mg/mol AgX) bility larity sensitivity Remark__________________________________________________________________________10-1 EM-15 B-105 (550) B-106 (100) 60 37 55 x10-2 EM-7 B-105 (550) B-106 (100) 50 45 100 x10-3 EM-3 B-105 (550) B-106 (100) 45 30 105 .smallcircle.10-4 EM-7 B-105 (550) -- 55 45 100 x10-5 EM-3 B-105 (550) -- 45 34 105 .smallcircle.10-6 EM-7 A-57 (550) -- 40 48 100 x10-7 EM-3 A-57 (550) -- 24 25 122 .smallcircle.10-8 EM-3 A-56 (550) -- 23 28 122 .smallcircle.10-9 EM-15 A-58 (550) A-59 (100) 50 35 54 x10-10 EM-7 A-58 (550) A-59 (100) 40 47 100 x10-11 EM-3 A-58 (550) A-59 (100) 25 25 121 .smallcircle.10-12 EM-3 A-57 (550) A-56 (100) 23 22 121 .smallcircle.10-13 EM-3 A-66 (550) A-81 (100) 20 23 125 .smallcircle.10-14 EM-3 A-67 (550) A-76 (100) 25 25 117 .smallcircle.10-15 EM-3 A-68 (550) A-89 (100) 20 27 119 .smallcircle.10-16 EM-3 A-61 (550) A-56 (100) 20 24 125 .smallcircle.10-17 EM-3 A-100 (550) A-89 (100) 20 23 123 .smallcircle.10-18 EM-3 A-101 (550) A-113 (100) 24 21 121 .smallcircle.10-19 EM-3 A-110 (550) A-82 (100) 27 26 117 .smallcircle.__________________________________________________________________________ .smallcircle.: Invention x: Comparison ##STR36##
As can be seen from the data in Table 20, the samples comprising the silver halide emulsions of the invention contained in a red-sensitive emulsion layer are improved in sensitivity, desorption of sensitizing dye and granularity.
Further, the effect of the present invention was preserved in each of the samples, even when the amount of sensitizing dye (I) was decreased to 150 mg and that of sensitizing dye (II) was decreased to 80 mg in sample Nos. 10-1 to 10-19.
EXAMPLE 11
On a subbed cellulose acetate support were formed the layers specified below, to obtain a multilayer color photosensitive material No. 11-1.
The coated amounts of silver halide and colloidal silver are indicated by g/m.sup.2 as converted to metal silver; those of the additives and gelatin are also by g/m.sup.2 ; and sensitizing dye and coupler mol per mol of silver halide contained in the same layer.
The emulsions contained in the respective color-sensitive emulsion layers were subjected to optimum gold/sulfur sensitization.
______________________________________Layer Major components Amount______________________________________Layer 1 (HC) Black colloidal silver 0.20(anti- Gelatin 1.5halation Ultraviolet absorbent UV-1 0.1layer Ultraviolet absorbent UV-2 0.2 Dioctyl phthalate (DOP) 0.03Layer 2 (IL-1) Gelatin 2.0(intermediate- 2,5-di-t-octylhydroquinone 0.1layer) (AS-1) DOP 0.1Layer 3 (R-1) EM-1 1.2(1st red- Gelatin 1.1sensitive Sensitizing dye (A-57) 6 .times. 10.sup.-5emulsion Sensitizing dye (A-56) 1 .times. 10.sup.-5layer) Coupler (C.sub.4 -1) 0.06 Coupler (CC-1) 0.003 DOP 0.6Layer 4 (R-2) EM-3 1.0(2nd red- Gelatin 1.1sensitive Sensitizing dye (A-57) 3 .times. 10.sup.-5emulsion Sensitizing dye (A-56) 1 .times. 10.sup.-5layer) Coupler (C.sub.4 -1) 0.03 DOP 0.3Layer 5 (IL-2) Gelatin 0.8(intermediate- AS-1 0.03layer) DOP 0.1Layer 6 (G-1) EM-1 1.1(1st green- Gelatin 1.2sensitive Sensitizing dye (A-22) 2.5 .times. 10.sup.-5emulsion Sensitizing dye (A-34) 1.2 .times. 10.sup.-5layer) Coupler (M-2) 0.045 Coupler (CM-1) 0.009 Tricresyl phosphate (TCP) 0.5Layer 7 (G-2) EM-3 1.3(2nd green- Gelatin 0.8sensitive Sensitizing dye (A-23) 1.5 .times. 10.sup.-5emulsion Sensitizing dye (A-20) 1.0 .times. 10.sup.-5layer) Coupler (M.sub.4 -3) 0.03 TCP 0.3Layer 8 (YC) Gelatin 0.6(yellow- Yellow colloidal silver 0.08filter layer) AS-1 0.1 DOP 0.3Layer 9 (B-1) EM-1 0.5(1st blue- Gelatin 1.1sensitive Sensitizing dye (A-3) 1.3 .times. 10.sup.-5emulsion Coupler (Y-2) 0.29layer) TCP 0.2Layer 10 (B-2) EM-3 0.7(2nd blue- Gelatin 1.2sensitive Sensitizing dye (A-3) 1 .times. 10.sup.-5emulsion Coupler (Y-2) 0.08layer) TCP 0.1Layer 11 (Pro-1) Gelatin 0.55(1st protective Ultraviolet absorbent UV-1 0.1layer) Ultraviolet absorbent UV-2 0.2 DOP 0.03 AgBrI AgI, 1 mol % 0.5 average size, 0.07 .mu.mLayer 12 (Pro-2) Gelatin 0.5(2nd protective Polymethyl methacrylate 0.2layer) particles (dia., 1.5 .mu.m) Formalin scavenger (HS-1) 3.0 Hardener (H-1) 0.4______________________________________
In addition, to each layer was added a surfactant for a coating aid. ##STR37##
Sample Nos. 11-2 through 11-7 were prepared in the manner identical to that of Sample No. 11-1, except that a coupler was replaced as specified in Table 21. The coupler combinations in these multilayer samples were respectively designated Coupler Combination A, B, C, D, E, F, and G.
TABLE 21__________________________________________________________________________ 11-1 11-2 11-3 11-4 11-5 11-6 11-7 Coupler Com- Coupler Com- Coupler Com- Coupler Com- Coupler Com- Coupler Com- Coupler Com-Sample bination A bination B bination C bination D bination E bination F bination__________________________________________________________________________ GLayer 3 C4-1 (0.006) C-1 (0.06) C4-1 (0.06) C4-1 (0.06) C-8 (0.06) C-30 (0.06) C-19 (0.06)(EM-1) CC-1 (0.003) CC-1 (0.003) CC-1 (0.003) CC-1 (0.003) CC-1 (0.003) CC-1 (0.003) CC-1 (0.003) D-21 (0.003) D-21 (0.003) D-21 (0.003) D-21 (0.003) DSR-17 (0.006)Layer 4 C4-1 (0.03) C-1 (0.03) C4-1 (0.03) C4-1 (0.03) C-8 (0.03) C-20 (0.03) C-19 (0.03)(EM-3) D-21 (0.002) D-21 (0.002) D-21 (0.002) D-21 (0.002) DSR-26 (0.003)Layer 6 M-2 (0.045) M-2 (0.045) M-2 (0.045) M-2 (0.045) M-14 (0.045) M-16 (0.045) M-13 (0.045)(EM-1) CM-1 (0.009) CM-1 (0.009) CM-1 (0.009) CM-1 (0.009) CM-1 (0.009) CM-1 (0.009) CM-1 (0.009) D-29 (0.001) D-29 (0.001) D-29 (0.001)Layer 7 M4-3 (0.03) M4-3 (0.03) M4-3 (0.03) M4-3 (0.045) M-14 (0.03) M-16 (0.03) M-18 (0.03)(EM-3) D-29 (0.002) D-29 (0.002) D-29 (0.002)Layer 9 Y-2 (0.29) Y-2 (0.29) Y-2 (0.29) Y-2 (0.29) Y-5 (0.29) Y-3 (0.29) Y-5 (0.29)(EM-1)Layer 10 Y-2 (0.08) Y-2 (0.08) Y-2 (0.08) Y-2 (0.08) Y-6 (0.08) Y-6 (0.08) Y-6 (0.08)(EM-3) D-4 (0.004) D-4 (0.004) D-4 (0.004) D-4__________________________________________________________________________ (0.004) Data in () represents amount added (mol/mol AgX)
Multilayer Sample Nos. 11-8 through 11-14 were prepared in the manner identical to that of Sample Nos. 11-1 through 11-7, except that EM-1 was replaced with EM-5 (comparative emulsion) and that EM-3 with EM-7 (comparative emulsion).
Each of the samples was exposed with white light, and developed by Processing (II), and then, each was evaluated for relative sensitivity (S.sub.1) and RMS (relative value).
The relative sensitivity was measured on the yellow, magenta, and cyan densities. A portion of each sample was allowed to stand for 2 days at 50.degree. C. and 80% RH, and then sensitivity was measured in order to evaluate stability for aging.
The results are summarized in Table 22.
TABLE 22__________________________________________________________________________ Relative sensitivity of processing after Relative sensitivity of 2 day-standing at RMS value (relativeCoupler instant processing* 50.degree. C./80% RH *1 value) 2* combi- Yellow Magenta Cyan Yellow Magenta Cyan Yellow Magenta CyanNo. nation filter filter filter filter filter filter filter filter filter Remarks__________________________________________________________________________11-1 A 130 150 120 120 130 105 85 84 89 .smallcircle.11-2 B 140 160 130 115 135 135 105 82 80 .smallcircle.11-3 C 125 165 125 100 145 110 67 63 68 .smallcircle.11-4 D 120 145 120 100 120 105 51 44 52 .smallcircle.11-5 E 150 155 120 125 140 95 78 70 88 .smallcircle.11-6 F 130 155 130 105 140 100 65 67 70 .smallcircle.11-7 G 150 160 145 125 150 115 64 65 66 .smallcircle.11-8 A 100 100 100 60 40 40 119 121 125 x11-9 B 95 100 90 50 35 50 124 123 118 x11-10 C 105 110 100 100 55 35 35 100 108 x11-11 D 100 105 105 60 50 30 30 76 70 x11-12 E 90 100 95 60 45 50 105 104 114 x11-13 F 95 90 90 65 45 40 96 96 96 x11-14 G 90 90 85 50 40 45 98 98 100 x__________________________________________________________________________ *1 Indicated as a relative sensitivity to that of Sample No. 118 in instantant processing, which is set at 100. *2 Relative value to that of Sample No. 118, i.e. 100. .smallcircle.: Invention x: Comparison B: blue sensitive layer G: green sensitive layer R: red sensitive layer
As can be seen from the data in Table 22, the samples comprising silver halide emulsions of the invention are superior to the comparative samples in sensitivity and granularity in the respective coupler combinations, and have much less desensitization attributable to desorption of sensitizing dye at a high temperature/high humidity also in the presence of a coupler.
The effects of the invention were observed also in the following modified in samples; Sample No. 11-3, DSR-27 was added to layer 3 by 0.006 mol/mol of Ag, and DSR-34 to layer 4 by 0.003 mol/mol of Ag; in Sample No. 11-2, DSR-21 was added to layer 6 by 0.004 mol/mol of Ag, DSR-21 and DSR-4 to layer 7 by 0.002 mol/mol of Ag, respectively, and DSR-20 to layer 8 by 0.006 mol/mol of Ag; in Sample No. 11-2, C-1 was replaced with C-5, C-11, C-31 and C-32 respectively; in Sample No. 11-2, M-2 with M-6, and Y-2 with Y-7; in Sample No. 11-5, M-14 was replaced with M-25, and Y-5 with Y-10.
EXAMPLE 12
The layers having the composition specified below were formed on a subbed cellulose acetate support to obtain a multilayer color photosensitive material No. 11-1.
The coated amounts are indicated by g/m.sup.2 as converted to metal silver in silver halide and colloidal silver, by g/m.sup.2 in the additives and gelatin; and by mol per mol of silver halide contained in the same layer in a sensitizing dye and a coupler.
The emulsions contained in the respective color-sensitive emulsion layers were subjected to optimum gold/sulfur sensitization in a sensitizing dye and a coupler.
______________________________________Layer Major components Amount______________________________________Layer 1 Black colloidal silver 0.20(anti- Gelatin 1.5halation Ultraviolet absorbent UV-1 0.1layer Ultraviolet absorbent UV-2 0.2 Dioctyl phthalate (DOP) 0.03Layer 2 Gelatin 2.0(intermediate- 2,5-di-tert-octylhydroquinone 0.1layer) (AS-1) DOP 0.1Layer 3 EM-1 1.2(1st red- Gelatin 1.1sensitive Sensitizing dye (A-58) 6 .times. 10.sup.-5emulsion Sensitizing dye (A-59) 1 .times. 10.sup.-5layer) Coupler (C.sub.4 -20) 0.06 Coupler (CC-1) 0.003 Coupler (D-23) 0.0015 Coupler (D-34) 0.002 DOP 0.6Layer 4 EM-3 1.0(2nd red- Gelatin 1.1sensitive Sensitizing dye (A-58) 3 .times. 10.sup.-5emulsion Sensitizing dye (A-59) 1 .times. 10.sup.-5layer) Coupler (C.sub.4 -20) 0.03 Coupler (D-34) 0.001 DNP 0.3Layer 5 Gelatin 0.8(intermediate- AS-1 0.03layer) DOP 0.1Layer 6 EM-1 1.1(1st green- Gelatin 1.2sensitive Sensitizing dye (A-22) 2.5 .times. 10.sup.-5emulsion Sensitizing dye (A-34) 1.2 .times. 10.sup.-5layer) Coupler (M-15) 0.045 Coupler (CM-1) 0.009 Coupler (D-23) 0.001 Coupler (D-26) 0.003 Tricresyl phosphate (TCP) 0.5Layer 7 EM-3 1.3(2nd green- Gelatin 0.8sensitive Sensitizing dye (A-23) 1.5 .times. 10.sup.-5emulsion Sensitizing dye (A-20) 1.0 .times. 10.sup.-5layer) Coupler (M.sub.4 -4) 0.03 Coupler (D-26) 0.001 TCP 0.3Layer 8 Gelatin 0.6(yellow- Yellow colloidal silver 0.08filter layer) AS-1 0.1 DOP 0.3Layer 9 EM-1 0.5(1st blue- Gelatin 1.1sensitive Sensitizing dye (A-3) 1.3 .times. 10.sup.-5emulsion Coupler (Y-5) 0.29layer) TCP 0.2Layer 10 EM-3 0.7(2nd blue- Gelatin 1.2sensitive Sensitizing dye (A-3) 1 .times. 10.sup.-5emulsion Coupler (Y-5) 0.08layer) Coupler (D-34) 0.0015 TCP 0.1Layer 11 Gelatin 0.55(1st protective Ultraviolet absorbent UV-1 0.1layer) Ultraviolet absorbent UV-2 0.2 DOP 0.03 (AgBrI, (AgI, 1 mol % 0.5 average size, 0.07 .mu.m)Layer 12 (Pro-2) Gelatin 0.5(2nd protective Polymethyl methacrylate 0.2layer) particles (dia., 1.5 .mu.m) Formalin scavenger (HS-1) 3.0 Hardener (H-1) 0.4______________________________________
A surfactant was added to each layer as a coating aid in addition to the preceding components.
Sample Nos. 12-2 through 12-6 were prepared in the same manner as Sample No. 12-1, except that a sensitizing dye and an emulsion were replaced as specified in Table 23.
The respective samples were subjected to wedge exposing by white light, and then were developed in the same manner as Example 11. Relative sensitivity (S.sub.1), desorbability of sensitizing dye and RMS granularity of green-sensitive layer were evaluated.
Sensitivity is a relative value to that of Sample No. 12-6, which is set at 100.
TABLE 23__________________________________________________________________________Sample descriptionLayerR-1 G-1 B-1 R-1 G-1 B-1 Emul- Sensitiz- Emul- Sensitiz- Emul- Sensitiz- Emul- Sensitiz- Emul- Sensitiz- Emul- Sensitiz-No. sion ing dye sion ing dye sion ing dye sion ing dye sion ing dye sion ing__________________________________________________________________________ dye12-1 EM-1 A-58 EM-1 A-22 EM-1 A-3 EM-3 A-58 EM-3 A-23 EM-3 A-3 A-59 A-34 A-59 A-2312-2 EM-1 A-57 EM-1 A-18 EM-1 A-4 EM-3 A-57 EM-3 A-75 EM-3 A-4 A-56 A-34 A-56 A-2012-3 EM-1 A-58 EM-1 A-22 EM-5 A-3 EM-3 A-58 EM-3 A-23 EM-7 A-3 A-59 A-34 A-59 A-2012-4 EM-1 A-58 EM-1 A-22 EM-5 A-3 EM-7 A-58 EM-7 A-23 EM-7 A-3 A-59 A-34 A-59 A-2012-5 EM-5 A-58 EM-5 A-22 EM-5 A-3 EM-7 A-58 EM-7 A-23 EM-7 A-3 A-59 A-34 A-59 A-2012-6 EM-13 A-58 EM-13 A-22 EM-13 A-3 EM-15 A-58 EM-15 A-23 EM-15 A-3 A-59 A-34 A-59 A-20__________________________________________________________________________ Performance Relative Desorba- sensivility bility Granu- R G B R G B larity__________________________________________________________________________ 12-1 140 145 140 25 24 25 25 Invention 12-2 145 145 140 20 20 23 20 Invention 12-3 140 145 135 25 24 40 27 Invention 12-4 135 143 135 44 23 45 28 Invention 12-5 120 125 120 40 45 40 48 Invention Comparison 12-6 120 100 100 40 40 45 35 Invention Comparison__________________________________________________________________________
As can be found from the data in Table 23, the Sample Nos. 12-1 through 12-4 containing silver halide emulsions of the invention are superior to the comparative samples Nos. 12-5 and 12-6 in color sensitivity, granularity and desorbability of sensitizing dyes.
EXAMPLE 13
Sample No. 13-1 was prepared in the same manner as sample No. 12-1, except that A-58 in Layers 3 and 4 with A-57, and A-59 with A-56, and M.sub.4 -4 in Layer 7 with M-34.
Preparation of Sample No. 13-2 (comparative)
This sample was prepared in the same manner as Sample No. 13-1, except that EM-1 in Layers 3, 6 and 9 was replaced with EM-5 (comparative emulsion), and EM-3 in Layers 4, 7 and 10 with EM-7 (comparative emulsion).
Preparation of Sample No. 13-3 (invention)
This sample was prepared in the same manner as Sample No. 13-1, except that EM-1 in Layers 3, 6 and 9 was replaced with EM-9.
Each of these samples was divided into two pieces, where one piece was subjected to wedge exposing and developing as in Example 12, while the other was allowed to stand for 3 days at 50.degree. C. and 80% relative humidity, and then subjected as well to wedge exposing and processed by Processing [II ].
The processes samples were evaluated for sensitivity (S.sub.1) in instant processing, and increase in fog (Fog) at accelerated weathering conditions.
TABLE 24______________________________________ Property S1Sanoke Layer sensitivity .DELTA.Fog______________________________________Sample No. B 121 0.0713-1 G 126 0.07(invention) R 119 0.06Sample No. B 100 0.1113-2 G 100 0.12(comparison) R 100 0.11Sample No. B 122 0.0713-3 G 125 0.06(invention) R 100 0.07______________________________________ B: bluesensitive emulsion layer G: greensensitive emulsion layer R: redsensitive emulsion layer
As can be found from the data in Table 24, the sample containing silver halide emulsions (EM-1, EM-3 and EM-9) of the invention are superior to the comparative sample in sensitivity, and are improved in .DELTA. fog caused by storage.
EXAMPLE 14
The layers of the following compositions were sequentially formed on a polyethylene terephthalate support to prepare a multi color photographic material.
In each of the following examples, the amounts of the additives in a photographic material are per square meter, unless otherwise specified. The amounts of silver halide and colloidal silver are indicated as converted to metal silver. Each emulsion was subjected to gold/sulfur sensitization.
Sample No. 14-1 (Coating mode A)
Layer 1: Anti-halation layer (HC)
Gelatin layer containing black colloidal silver
Layer 2: Intermediate layer (I.L.)
Gelatin layer containing emulsified dispersion of 2,5-di-tert-octylhydroquinone
Layer 3: Low-sensitivity red-sensitive silver halide emulsion layer (RL) comprising: monodispersed emulsion subjected to spectral redsensitization by sensitizing dyes (A-57) and (A-56) and containing AgBrI with an average grain size (r) of 40 .mu.m and AgI content of 6.0 mol % - - - coated silver amount, 1.8 g/m.sup.2
Cyan coupler (C.sub.4 -20), 0.06 mol per mol of silver;
Colored; cyan coupler (CC-1), 0.003 mol of per mol of silver;
DIR compound (D-23), 0.0015 mol per mol of silver;
DIR compound (D-34), 0.002 mol per mol of silver;
High-boiling point solvent, dibutyl phthalate (DBP), 0.85 g/m.sup.2
Layer 4: High-sensitivity red-sensitive silver halide emulsion layer (RH) comprising:
Monodispersed emulsion subjected to spectral red-sensitization by sensitizing dyes (A-57) and (A-56) and containing AgBrI with an average grain size (r) of 0.70 .mu.m and AgI content of 7.0 mol % - - - coated silver amount, 1.3 g/m.sup.2 ;
Cyan coupler (C.sub.4 -20), 0.03 mol per of mol silver;
DIR compound (D-34), 0.001 mol per mol of silver;
High boiling point solvent DBP, 0.32 g/m.sup.2 ;
Layer 5: Intermediate layer (I.L.)
Gelatin layer, identical to Layer 2
Layer 6: Low-sensitivity green-sensitive silver halide emulsion layer (GL) comprising:
Emulsion Em-12, coated silver amount, 1.5 g/m.sup.2 ;
Magenta coupler (M.sub.4 -4), 0.045 mol per mol of silver;
Colored magenta coupler (CM-1), 0.009 mol per mol of silver;
DIR compound (D-23), 0.0010 mol per mol of silver;
DIR compound (D-26), 0.0030 mol per mol of silver
High-boiling point solvent DBP, 0.91 g/m.sup.2 ;
Layer 7: High-sensitivity green-sensitive silver halide emulsion layer (GH) comprising:
Emulsion Em-7, coated silver amount, being 1.4 g/m.sup.2
Magenta coupler (M.sub.4 -4), 0.030 mol per mol of silver;
DIR compound (D-26), 0.0010 mol per mol of silver;
High-boiling point solvent DBP, 0.44 g/m.sup.2 ;
Layer 8: Yellow filter layer (YC)
Gelatin layer comprising dispersion of yellow colloid silver and 2,5-di-tert-octylhydroquinone
Layer 9: Low-sensitivity blue-sensitive silver halide emulsion layer (BL) comprising:
Monodispersed emulsion subjected to spectral blue-sensitization by sensitizing dye (A-9) - - - coated silver amount, 0.9 g/m.sup.2 ;
Yellow coupler (Y-5), 0.29 mol per mol of silver;
High-boiling point solvent TCP, 0.20 g/m.sup.2 ;
Layer 10: High-sensitivity blue-sensitive silver halide emulsion layer (BH) comprising:
Monodispersed emulsion (subjected to spectral blue-sensitization by sensitizing dye (A-9) - - - coated silver amount, 1.3 g/m.sup.2 ;
Yellow coupler (Y-5), 0.08 mol per mol of silver;
DIR compound (D-34 ), 0.0015 mol per mol of silver;
High-boiling point solvent TCP, 0.08 g/m.sup.2 ;
Layer 11: 1st protective layer (P-1)
Gelatin layer comprising:
silver bromoiodide (AgI, 1 mol %; average grain size, 0.07 .mu.m; coated silver amount, 0.5 g/m.sup.2 );
Ultraviolet absorbents UV-1, and UV-2
Layer 12: 2nd protective layer (P-2)
Gelatin layer containing polymethyl methacrylate grains (dia., 1.5 .mu.m), and formalin scavenger (HS-1)
The respective layers incorporated a gelatin hardener (H-1) and a surfactant, in addition to the above components.
The layer thickness of Layer 1 through Layer 12 was 22 .mu.m, and the coated silver amount in Layer 1 through Layer 10 was 7.4 g/m.sup.2.
Sample No. 14-2 (Coating mode B)
This sample was prepared in the same manner as Sample No. 14-1, except that the layer thickness of Layer 1 through Layer 12 was 17.6 .mu.m and the coated silver amount in Layer 1 through Layer 10 was 5.9 g/m.sup.2. In other words, the coated silver amount in each layer of Sample No. 14-2 was 20% less than that of Sample No. 14-1.
Sample Nos. 14-3 through 14-6
Sample Nos. 14-3 and 14-4 corresponding to Coating modes A and B were prepared by replacing emulsions EM-12 and EM-7 in the green-sensitive layers with EM-13 and EM-15, respectively. Likewise, Sample Nos. 14-5 and 14-6 corresponding to Coating modes A and B were prepared by replacing emulsions EM-12 and EM-7 with EM-2 and EM-3, respectively.
The respective samples were subjected to wedge exposing by white light, and then processed by Processing (II).
The processed samples were evaluated for sensitivity (S.sub.1) of a green-sensitive layer, sharpness (MTF) and granularity (RMS). The evaluation results are summarized in Table 25.
To evaluate degree of improvement in sharpness, MTF (Modulation Transfer Function) of a dye image was determined, and sharpness is indicated by MTF value (%) at 30 cycles/mm.
The sensitivity (S.sub.1) is a relative value to that of Sample No. 14-1, which is set at 100.
TABLE 25______________________________________ Emulsion in green LayerSample sensitive thickness Sensitiv- Granu- Sharp-No. layer (.mu.m) ity S.sub.1 larity ness______________________________________14-1 EM-12 22 100 35 66compari- EM-7sion14-2 EM-12 17.6 90 35 69compari- EM-7sion14-3 EM-13 22 55 27 66compari- EM-15sion14-4 EM-17 17.6 45 23 75compari- EM-15sion14-5 EM-2 22 124 30 65inven- EM-3tion14-6 EM-2 17.6 110 22 75inven- EM-3tion______________________________________
As can be found from the data in Table 25, the samples of the invention (Nos. 14-5, and 14-6 ) excel in general criteria, i.e. sensitivity, granularity and sharpness; as particularly indicated by Nos. 14-5 and 14-6, it was unexpected fact that the emulsion of the invention and thinner layer construction provided the samples with improved granularity.
EXAMPLE 15
The layers of the following compositions were formed on a support to prepare multicolor photosensitive materials Nos. 15-1 through 15-3.
Sample No. 15-1
Layer 1: Anti-halation layer (HC)
Gelatin layer containing black colloidal silver
Layer 2: Intermediate layer (I.L.)
Gelatin layer containing emulsified dispersion of 2,5 -di-tert-octylhydroquinone
Layer 3: Low-sensitivity red-sensitive silver halide emulsion layer (R-1) comprising:
EM-5, coated silver amount, 1.8 g/m.sup.2 ;
Sensitizing dye (A-57), 6.times.10.sup.-5 mol per mol of silver;
Sensitizing dye (A-56), 1.0.times.10.sup.-5 mol per mol of silver;
Cyan coupler (C.sub.4 -20), 0.06 mol per mol of silver;
Colored cyan coupler (CC-1), 0.003 mol per mol of silver;
DIR compound (D-23), 0.0015 mol per mol of silver;
DIR compound (D-34), 0.002 mol per mol of silver;
High-boiling point solvent DBP, 0.85 g/m.sup.2 ;
Layer 4: High-sensitivity red-sensitive silver halide emulsion layer (R-2) comprising:
EM-16, coated silver amount, 1.3 g/m.sup.2
Sensitizing dye (A-57), 3.times.10.sup.-5 mol per mol of silver;
Sensitizing dye (A-56), 1.0.times.10.sup.-5 mol per mol of silver;
Cyan coupler (C.sub.4 -20), 0.03 mol per mol of silver;
DIR compound (D-34), 0.001 mol per mol of silver;
High-boiling point solvent DBP, 0.32 g/m.sup.2 ;
Layer 5: Intermediate layer (I.L.)
Gelatin layer, identical to Layer 2
Layer 6: Green-sensitive silver halide emulsion layer (G) comprising:
Em-12, coated silver amount, 2.3 g/m.sup.2 ;
Sensitizing dye (A-23), 2.5.times.10.sup.-5 mol per mol of silver;
Sensitizing dye (A-21), 1.2.times.10.sup.-5 mol per mol of silver;
Magenta coupler (M.sub.4 -4), 0.045 mol per mol of silver;
Colored magenta coupler (CM-1), 0.009 mol per mol of silver;
DIR compound (D-23), 0.0010 mol per mol of silver;
DIR compound (D-26), 0.0030 mol per mol of silver;
High-boiling point solvent DBP, 1.08 g/m.sup.2 ;
Layer 7: Yellow filter layer (YC-1 )
Gelatin layer comprising dispersion of yellow colloid silver and 2,5-di-tert-octylhydroquinone
Layer 8: Low-sensitivity blue-sensitive silver halide emulsion layer (B-1) comprising:
EM-5, coated silver amount, 0.9 g/m.sup.2 ;
Sensitizing dye (A-9), 1.3.times.10-5 mol per mol of silver;
Yellow coupler (Y-28), 0.29 mol per mol of silver;
High-boiling point solvent TCP, 0.20 g/m.sup.2 ;
Layer 9: High-sensitivity blue-sensitive silver halide emulsion layer (B-2) comprising:
EM-16, coated silver amount, 0.5 g/m.sup.2
Sensitizing dye (A-9), 1.0.times.10.sup.-5 mol per mol of silver;
Yellow coupler (Y-28), 0.08 mol per mol of silver;
DIR compound (D-34), 0.0015 mol per mol of silver;
High-boiling point solvent TCP, 0 08 g/m.sup.2 ;
Layer 10: 1st protective layer (P-1)
Gelatin layer comprising:
Silver bromoiodide (AgI, 1 mol %; average grain size, 0.07 .mu.m; coated silver amount, 0.5 g/m.sup.2);
Ultraviolet absorbents UV-1, and UV-2;
Layer 11: 2nd protective layer (P-2)
Gelatin layer containing polymethyl methacrylate grains (dia., 1.5 .mu.m), and formalin scavenger (HS-1)
The respective layers incorporated a gelatin hardener (H-1) and a surfactant, in addition to the above components.
The layer thickness of Layer 1 through Layer 11 was 22 .mu.m, and the coated silver amount in Layer 1 through Layer 9 was 6.8 g/m.sup.2.
Sample No. 15-2
This sample was prepared in the same manner as Sample No. 15-1, except that EM-12 in Layer 6 was replaced with EM-17.
Sample No. 15-3
This sample was prepared in the same manner as Sample No. 15-1, except that EM-12 in Layer 6 was replaced with EM-2.
The respective samples were subjected to wedge exposing by white light, and then processed by Processing (II).
The processed samples were evaluated for sensitivity (S.sub.1 ), maximum density Dmax, sharpness (MTF) and granularity (RMS). The evaluation results for the green-sensitive layers are summarized in Table 26.
Sensitivity (S.sub.1 ) and RMS are the relative values to those of Sample No. 15-1, which are set at 100.
TABLE 26______________________________________ Emulsion in green PropertySample sensitive Sensitiv-No. layer Dmax MTF (%) RMS ity (S1)______________________________________15-1 EM-12 2.38 80 100 100compari-sion15-2 EM-17 2.88 87 61 62compari-sion15-3 EM-2 2.89 87 61 116Invention______________________________________
As can be found from the data in Table 26, it is a surprising fact that the sample comprising EM-2 of the invention excels in general criteria, i.e. maximum density, sharpness, granularity and sensitivity.
EXAMPLE 16
Sample Nos. 16-1 through 16-3 were prepared in the same manner as Sample No. 15-1 in Example 15, except that EM-12 in Layer 6 was replaced as specified in Table 27.
The respective samples were evaluated in the same manner same as in Example 15, and the results are summarized in Table 27. Sensitivity (S.sub.1) and RMS are the relative values to those of Sample No. 16-1, which are set at 100.
TABLE 27______________________________________ Emulsion in green PropertySample sensitive Sensitiv-No. layer Dmax MTF (%) RMS ity (S1)______________________________________16-1 EM-5 2.12 78 100 100compari-sion16-2 EM-13 2.72 85 57 63compari-sion16-3 EM-1 2.73 85 57 126inven-tion______________________________________
As can be seen from the data in Table 27, the sample of the invention excels in general criteria, i.e. maximum density, sharpness, granularity and sensitivity.
EXAMPLE 17
Sample Nos. 17-1 through 17-3 were prepared in the same manner as sample No. 15-1 in Example 15, except that EM-12 in Layer 6 was replaced as specified in Table 28.
The respective samples were evaluated in the same manner as in Example 15. Sensitivity (S.sub.1 ) and RMS are the relative values to those of Sample No. 17-1, which are set at 100.
TABLE 28______________________________________ Emulsion in green PropertySample sensitive Sensitiv-No. layer Dmax MTF (%) RMS ity (S1)______________________________________17-1 EM-16 1.79 74 100 100compari-sion17-2 EM-18 2.40 83 49 66compari-sion17-3 EM-3 2.43 83 49 122inven-tion______________________________________
As can be found from the data in Table 28, the sample of the invention excels in general criteria, i.e. maximum density, sharpness, granularity and sensitivity.
EXAMPLE 18
The layers of the following compositions were formed on a support to prepare multicolor photosensitive material No. 18 -1.
Sample No. 18-1
In this sample, Layers 1 through 7 were identical to those of Sample No. 16-3 of Example 16, except that the layers following Layer 7 were composed as follows; Layer 8: Blue-sensitive silver halide emulsion layer (B) comprising:
EM-1, coated silver amount, 1.1 g/m.sup.2 ;
Sensitizing dye (A-9), 1.3.times.10.sup.-5 mol per mol of silver;
Yellow coupler (Y-28), 0.29 mol per mol of silver;
High-boiling point solvent TCP, 0.22 g/m.sup.2 ;
Layer 9: identical to Layer 10 in Sample No 16-3;
Layer 10: identical to Layer 11 in Sample No. 16-3;
Likewise, Sample Nos 18-2 through 18-5 were prepared as follows.
Sample No. 18-2
This sample was prepared by replacing yellow coupler Y-28 in Layer 8 of Sample No. 18-1 with an equivalent mole of Y-5.
Sample No. 18-3
This sample was prepared in the same manner as Sample No. 18-1, except that Layer 4 was removed and Layer 3 was composed as follows;
Layer 3: Red-sensitive silver halide emulsion layer (R)
EM-1, coated silver amount, 2.5 g/m.sup.2 ;
Sensitizing dye (A-57), 6.times.10.sup.-5 mol per mol of silver;
Sensitizing dye (A-56) 10.times.10.sup.-5 mol per mol of silver;
Cyan coupler (C.sub.4 -20), 0.06 mol per mol of silver;
Colored cyan coupler (CC-1), 0.003 mol per mol of silver;
DIR compound (D-23), 0.0015 mol per mol of silver;
DIR compound (D-34), 0.002 mol per mol of silver;
High-boiling point solvent DBP, 0.94 g/m.sup.2 ;
The respective samples and reference Sample No. 16-3 of Example 16 were processed in the same manner as in Example 15 and evaluated. The sensitivity (S.sub.1) and RMS are the relative values to those of Sample No. 16-3, which are set at 100.
The layer order and the evaluation results of these samples are summarized in Table 29.
TABLE 29______________________________________ Sample Sample Sample Sample 16-3 18-1 18-2 18-3______________________________________Layer 11 P-2 -- P-2 --Layer 10 P-1 P-2 P-2 --Layer 9 B-2 P-1 P-1 P-2 (EM-16)Layer 8 B-1 B B P-1 (EM-5) (EM-1) (EM-1) (YB-15)Layer 7 YC YC YC B-1Layer 6 G G G YC (EM-1) (EM-1) (EM-1)Layer 5 IL IL IL G (EM-1)Layer 4 R-2 R-2 R-2 IL (EM-16) (EM-16) (EM-16)Layer 3 R-1 R-1 R-1 R (EM-5) (EM-5) (EM-5) (EM-1)Layer 2 IL IL IL ILLayer 1 HC HC HC HCDmax B 2.42 2.54 2.81 2.54Dmax G 2.70 2.71 2.72 2.71Dmax R 2.50 2.51 2.51 2.61MTF G 85 68 87 87RMS G 100 88 88 88Sensi- 100 103 105 106tivity GRemark Compari- Inven- Inven- Inven- son tion tion tion______________________________________
Note: MTF, RMS, and sensitivity are the values for a green-sensitive layer. Dmax data are the values for the blue-, green-, and red-sensitive layers.
As can be found from comparison of the evaluation results of Sample Nos. 16-3 and 18-1 to 18-3, it is preferable that every photosensitive layer is single layer in order to balance the properties of maximum density, granularity, sharpness and sensitivity.
In the present invention, a yellow coupler of a benzoyl acetoanilide family further improves the maximum density of a blue-sensitive layer.
EXAMPLE 19
The layers of the following compositions were formed on a polyethylene terephthalate support to prepare a multilayer color photographic material.
Sample No. 19-1 (Coating mode C)
Layer 1: (HC)
Layer identical to Layer 1 in Sample No. 14-1
Layer 2: (I.L.)
Layer identical to Layer 2 in Sample No. 14-1
Layer 3: Red-sensitive silver halide emulsion layer (R) comprising:
monodispersed emulsion subjected to spectral red-sensitization by sensitizing dyes (A-57) and (A-56) and comprising AgBrI with an average grain size of 0.40 .mu.m and AgI content of 6.0 mol % - - - coated silver amount, 3.1 g/m.sup.2 ;
Cyan coupler (C.sub.4 -20), 0.06 mol per mol of silver;
Colored cyan coupler (CC-1 ), 2.times.10.sup.-3 mol per mol of silver;
DIR compound (D-34), 1.times.10.sup.-3 mol per mol of silver;
High-boiling point solvent DBP, 0.92 g/m.sup.2 ;
Layer 4: (I.L)
Layer identical to Layer 5 in Sample No. 14-1
Layer 5: Green-sensitive silver halide emulsion layer (G) comprising:
Emulsion Em-12, coated silver amount, 2.9 g/m.sup.2 ;
Magenta coupler (M4-4), 0.05 mol per mol of silver;
Colored magenta coupler (CM-1), 6.times.10.sup.-3 mol per mol of silver;
DIR compound (D-26), 2.5.times.10.sup.-3 mol per mol of silver;
High-boiling point solvent DBP, 1.02 g/m.sup.2 ;
Layer 6: (YC)
Layer identical to Layer 8 in Sample No. 14-1
Layer 7: Blue-sensitive silver halide emulsion layer (B) comprising:
monodispersed emulsion subjected to spectral blue-sensitization by sensitizing dye (A-9) and comprising AgBrI with an average grain size of 0.48 .mu.m and AgI content of 18 mol % - - - coated silver amount, 1.4 g/m.sup.2 ;
Yellow coupler (Y-28), 0.28 mol per mol of silver;
DIR compound (P-34), 1.0.times.10.sup.-3 mol per mol of silver;
High-boiling point solvent TCP, 0.23 g/m.sup.2 ;
Layer 8: (P-1)
Layer identical to Layer 11 in Sample No. 14-1
Layer 9: (P-2)
Layer identical to Layer 12 in Sample No. 14-1
Sample No. 19 (Coating mode D)
Sample No. 19-2 was prepared in the same manner as Sample No. 19-1, except that the layer thickness in Layers 1 through 9 was 19 .mu.m, and that the total coated silver amount in the three photosensitive layers was 6.4 g/m.sup.2. That is, the coated silver amount in each layer of Sample No. 19-2 was 13.5% less than that of Sample No. 19-1. These thinner layers are hereunder identified by affixing two apostrophes ('') to each layer described in Sample No. 19-1. For example, B'' represents a layer 13.5% thinner than Layer B. This definition is applied hereinafter.
Sample Nos. 19-3, and 19-4
These samples were prepared by replacing Emulsion EM-12 in the green-sensitive layer of Sample Nos. 19-1 and 19-2 respectively, with EM-2.
Sample No. 19-5 (Coating mode E)
Sample No. 19-5 was prepared in the same manner as sample No. 19-3, except that the layer thickness in Layers 1 through 9 was 16 .mu.m, and that the total coated silver layers was 5. 4 g/m.sup.2. That is, the coated silver amount in each layer of Sample No. 19-5 was 27. 0% less than that of Sample No. 19-3. These thinner layers are hereunder identified by affixing three apostrophes (''') to each layer in Sample No. 19-1.
Sample No. 19-6 (Coating mode F)
Sample No. 19-6 was prepared in the same manner as Sample No. 19-3, except that the layer thickness in Layers 1 through 9 was 14 .mu.m, and that the total coated silver amount 4.7 g/m.sup.2. That is, the coated silver amount in each layer of Sample No. 19-6 was 36.5% less than that of Sample No. 19-3. These thinner layers are hereunder identified by affixing an asterisk (*) to each layer in Sample No. 19-1.
Sample No. 19-7 (Coating mode G)
Sample No. 19-7 was prepared in the same manner as Sample No. 19-3, except that the layer thickness in Layers 1 through 9 was 12.7 .mu.m, and that the total coated silver amount was 4.3 g/m.sup.2. That is, the coated silver amount in each layer of Sample No. 19-7 was 42% less than that of Sample No. 19-3. These thinner layers are hereunder identified by affixing two asterisks (**) to each layer in Sample No. 19-1.
Coating Modes C through G are summarized in Table 30.
TABLE 30______________________________________ Coating ModeLayer No. C D E F G______________________________________9 P-2 P-2'' P-2''' P-2* P-2**8 P-1 P-1'' P-1''' P-1* P-1**7 B B'' B''' B* B**6 YC YC'' YC''' YC* YC**5 G G'' G''' G* G**4 IL IL'' IL''' IL* IL**3 R R'' R''' R* R**2 IL IL'' IL''' IL* IL**1 HC HC'' HC''' HC* HC**Layer thick- 22 19 16 14 12.7ness (.mu.m)Coated 7.4 6.4 5.4 4.7 4.3silver amount(g/m.sup.2)______________________________________
Sample Nos. 19-8 and 19-9
These samples were prepared according to Coating Modes C and D respectively, by replacing emulsion EM-5 in the green-sensitive layer of Sample 19-1 with comparative emulsion EM-17.
These samples were subjected to exposing and processing as in Example 14, and then were evaluated. The evaluation results are summarized in Table 31.
TABLE 31__________________________________________________________________________Sample No. 19-1 19-2 19-3 19-4 19-5 19-6 19-7 19-7 19-7__________________________________________________________________________Coating Mode C D C D E F G C DLayer thickness (.mu.m) 22 19 22 19 16 14 12.7 22 19Green-sensitivelayer emulsionG and GI EH-12 EH-12 EH-2 EH-2 EH-2 EH-2 EH-2 EH-17 EH-17layersGH layer -- -- -- -- -- -- -- -- --Sharpness MTF(G) 65 68 68 76 80 90 94 67 77Granularity RMS(G) 30 30 25 19 16 12 10 25 20Sensitivity (green) 100 96 110 111 105 100 100 40 40Remarks Compar- Compar- Inven- Inven- Inven- Inven- Inven- Compar- Compar- ison ison tion tion tion tion tion ison ison__________________________________________________________________________ MTF and RMS are the values of a greensensitive layer
As can be found from the data in this table, the sensitivities of the samples of the invention are equal to or higher than those of Sample Nos. 19-1 and 19-2 containing conventional core/shell emulsions, and, the samples of the invention have been improved in granularity and sharpness to a large extent. Such effects of the invention is particularly significant with the layer thickness of not more than 15 .mu.m.
EXAMPLE 20
The samples were prepared as per Table 32 and evaluated in the same manner as Example 19. The evaluation results are summarized in Table 32 together with the data of Sample Nos. 19-3 and 19-6 in Example 19.
TABLE 32______________________________________Sample No. 20-1 20-2 19-3 20-3 20-4 19-6______________________________________Coating C C C F F FModeLayer 22 22 22 14 14 14thickness(.mu.m)Green-sen- EM-3 EM-1 EM-2 EM-3 EM-1 EM-2sitive layer 0.65 0.38 0.27 0/65 0.38 0.27emulsion(Grainsize)AgI con- 7.16 8.46 8.46 7.16 8.46 8.46tent (mol%)Sharpness 62 65 68 70 75 90MTF (G)Granularity 28 26 25 25 18 12RMS (G)______________________________________
It is apparent from the data in Table 32 that the finer silver halide grains of Sample Nos. 20-3, 20-4, and 19-6, each having thinner layers, contribute to further improving granularity and sharpness.
EXAMPLE 21
Sample No. 21-1 was prepared in the same manner as Example 5, besides that EM-1 of Sample No. 5-1 in Example 5 was replaced with EM-13.
Each of Sample Nos. 5-1, 5-2, and 21-1, was exposed to green light through an optical wedge, and then were processed by the following processing steps to obtain dye images.
______________________________________[Processing steps]______________________________________Color developing (38.degree. C.) Specified in Table 33Bleach-fixing (38.degree. C.) 4 min.Washing (20-33.degree. C.) 1 min.Stabilizing (20-33.degree. C.) 30 sec.Drying______________________________________
The compositions of the processing solutions used in the processing steps were as follows;
______________________________________[Color developing solution]4-amino-3-methyl-N-ethyl-N-hydroxyethylaniline sulfate 5 gSodium sulfite anhydride 4.25 gHydroxylamine.1/2 sulfate 2.0 gCompound (1) represented by Formula [IS] 10 gPotassium carbonate anhydride 30.0 gSodium bromide 1.3 gTrisodum nitrilotriacetate (monohydrate) 2.5 gPotassium hydroxide 1.0 gWater added to make total quantity 1 lit.[Bleach-fixing solution]Ferric ammonium ethylenediaminetetraacetate 200.0 gDiammonium ethylenediaminetetraacetate 2.0 gAqueous ammonia (28% solution) 20.0 gAmmonium thiosulfate 175.0 gSodium sulfite anhydride 8.5 gSodium metasulfite 2.3 g2-amino-5-mercapto-1,3,4-thiadiazole 1.5 g______________________________________
Water was added to make total quantity 1 lit., and pH was adjusted to 6.6 with aqueous ammonia.
______________________________________[Washing]Tap water[Stabilizing solution]Formalin (37% aqueous solution) 1.5 mlKonidax (Konica Corporation) 7.5 mlWater added to make total quantity 1 lit.______________________________________
Sensitivity (S.sub.1 ), granularity (RMS value) and sharpness (MTF value) of each dye image were measured.
The results are summarized in Table 33.
Sensitivity S.sub.1 is a relative value to that of Sample No. 21-1 developed in 60 seconds, which is set at 100.
TABLE 33__________________________________________________________________________Sample No. EM S.sub.1 sensitivity Granularity Sharpness Remark__________________________________________________________________________ Color developing time (sec.) 60 120 180 60 120 180 60 120 180 5-1 EM-1 151 148 138 23 23 30 87 85 78 .smallcircle. 5-2 EM-5 127 120 110 28 30 35 78 77 69 x21-1 EM-13 127 120 110 28 30 35 78 77 69 x__________________________________________________________________________ .smallcircle.: Invention x: Comparison
It can be found from the data in Table 33 that the samples of the invention developed within 120 seconds can provide further improved sensitivity, granularity and sharpness.
EXAMPLE 22
Sample No. 22-1 was prepared in the same manner as Sample No. 12-1, except that sensitizing dye A-58 in Layer 3 was replaced with A-57, and sensitizing dye A-59 with A-56.
Preparation of Sample No. 22-2
This sample was prepared in the same manner as Sample No. 22-1, except that EM-1 in Layers 3, 6 and 9 in Sample No. 22-1 was replaced with EM-5 (comparative emulsion), and EM-3 in Layers 4, 7 and 10 with EM-7 (comparative sample).
Preparation of Sample No. 22-3
This sample was prepared in the same manner as Sample No. 22-1, except that EM-1 in Layers 3, 6 and 9 in Sample No. 22-1 was replaced with EM-13 (comparative emulsion), and EM-3 in Layers 4, 7 and 10 with EM-15 (comparative sample).
Each of the samples was exposed to white light through an optical wedge, and was processed by processing steps as in Example 21. The yellow, magenta and cyan dye images of these samples were evaluated for S.sub.1 sensitivity, granularity and sharpness. The evaluation results are summarized in Table 34.
Sensitivity S.sub.1 is a relative value to that of Sample 22-3 developed in 60 seconds, which is set at 100.
TABLE 34__________________________________________________________________________Color developingtime (sec.) 60 120 180Sample No. R G B R G B R G B Remark__________________________________________________________________________ S.sub.1 sensitivity22-1 153 154 152 149 150 149 138 140 13522-2 130 131 129 123 121 122 111 108 10822-3 100 100 100 97 98 97 87 87 85__________________________________________________________________________ Granularity22-1 26 26 27 27 27 27 30 32 3122-2 31 32 33 33 33 32 38 40 4022-3 30 31 32 32 34 34 36 38 37__________________________________________________________________________ Sharpness22-1 80 82 84 78 81 83 72 73 76 .smallcircle.22-2 72 73 74 67 68 71 58 59 60 x22-3 72 74 75 68 68 72 66 63 64 x__________________________________________________________________________ .smallcircle.: Invention x: Comparison
It can be found from Table 34 that multilayer Sample No. 22-1 of the invention developed within 120 seconds can provide further improved sensitivity, granularity and sharpness as well as in Example 21.
EXAMPLE 23
Preparation of Sample Nos. 23-1 through 23-4
These samples were prepared in the same manner as Sample No. 22-1 in Example 22, except that the emulsions in Sample No. 22-1 were replaced with the emulsions specified in Table 35, and that in Sample Nos. 23-3 and 23-4, Layers 4, 7 and 10 were removed from Sample No. 23-1 and 23-2 to make the respective photosensitive layers single.
The respective samples were exposed and processed as in Example 21. Then, sensitivity S.sub.1, granularity (RMS value) and sharpness (MTF values) of the magenta day images were measured. The results are summarized in Table 35. Sensitivity (S.sub.1) is a relative value to that of Sample No. 23-2 (60 seconds), which is set at 100.
TABLE 35__________________________________________________________________________Color developing time (sec.)EMBlue- Green- Redsensitive sensitive sensitivelayer layer layerSample Layer Layer Layer Layer Layer Layer S.sub.1 sensitivity Granularity SharpnessNo. 9 10 6 7 3 4 60 120 180 60 120 180 60 120 180 Remark__________________________________________________________________________22-1 EM-1 EM-3 EM-1 EM-3 EM-1 EM-3 177 172 161 26 27 32 82 81 73 .smallcircle.23-1 EM-2 EM-1 EM-2 EM-1 EM-2 EM-1 126 124 113 22 23 32 84 83 75 .smallcircle.23-2 EM-12 EM-5 EM-12 EM-5 EM-12 EM-5 100 99 101 28 28 34 76 75 68 x23-3 EM-1 -- EM-1 -- EM-1 -- 132 126 111 22 24 30 87 85 78 .smallcircle.23-4 EM-2 -- EM-2 -- EM-2 -- 117 117 111 21 22 28 89 88 80 .smallcircle.__________________________________________________________________________ .smallcircle.: Invention x: Comparison
As can be found from the data in Table 35, the samples of the invention developed within 120 seconds provide excellent granularity and sharpness and high sensitivity.
Further the yellow and cyan dye images were evaluated as well, and the similar results were obtained.
EXAMPLE 24
Each of EM-1 through -3, -7, -13, -17, and -20 through 23 was subjected to gold/sulfur sensitization, and then to spectral green-sensitization by sensitizing dyes (A-22) and (A-34) as per specified in Table 36. Next, each emulsion was stabilized by TAI and 1-phenyl-5-mercaptotetrazole.
To each emulsion were added to dispersion prepared by dispersing magenta coupler (M.sub.4 -4) dissolved in a mixture solvent of ethyl acetate and dinonylphthalate (DNP) in an aqueous gelatin solution, and the conventional photographic additives such as a spreader, a hardener etc. to prepare a photographic coating solution. It was coated and dried on a subbed cellulose acetate support by a conventional method to obtain a photosensitive material sample.
The coated amounts of the respective compounds per square meter of support are specified below.
______________________________________Emulsion (converted to silver amount) 1 gmagenta coupler 0.4 gDNP 0.4 ggelatin 0.12 g______________________________________
Each sample was subjected to wedge exposing by a conventional method, and was processed by Processing (II).
The Processed samples were evaluated for sensitivity S.sub.1. The results are summarized in Table 36.
The sensitivity values in the table are relative to the sensitivity 100 of a sample having EM-1 to which were added sensitizing dyes (A-22) and (A-34) in amounts, respectively, of 550 mg and 340 mg per mol of silver.
TABLE 36______________________________________Amount of sensitizingdye (mg/molAg)Emulsion Sensitizing Sensitizing Relativeused dye (A-22) dye (A-34) sensitivity Remark______________________________________EM-1 550 340 100 .smallcircle.EM-1 183 113 28 .smallcircle.EM-20 550 340 24 .smallcircle.EM-21 550 340 26 .smallcircle.EM-5 550 340 84 xEM-13 550 340 58 xEM-2 775 480 45 .smallcircle.EM-17 775 480 30 xEM-3 320 280 367 .smallcircle.EM-7 320 200 260 xEM-22 435 270 102 x______________________________________ .smallcircle.: Invention x: Comparison
Sample No. 24-1 to 24-8, which contain the emulsions having various sensitivities, were prepared in the same manner as the samples specified in Table 36, except that the emulsions were combined as specified in Table 37.
Each of these samples was subjected to wedge exposure by a conventional method, and processed by Processing (II).
The processed samples were evaluated for exposure latitude, sensitivity (S.sub.1) and granularity (RMS). The evaluation results are summarized in Table 37.
Exposure latitude is indicated as follows, provided that .DELTA.D is the difference between the minimum and maximum densities on a specific curve: where
______________________________________.DELTA. log E = log E (F + 0.1 .times. .DELTA.D) - log E (D - 0.1 .times..DELTA.D)______________________________________log E (F + 0.1 .times. .DELTA.D): sensitivity at (minimum density + 0.1 .times. .DELTA.D)log E (D - 0.1 .times. .DELTA.D): sensitivity at (maximum density - 0.1 .times. .DELTA.D)______________________________________
TABLE 38______________________________________Sample Lati- Relative Granu-No. Emulsion used tude sensitivity larity______________________________________24-1 EM-1:EM-17 = 1:1 3.3 160 10(invention)24-2 EM-1:EM-2 = 1:1 3.2 175 11(invention)24-3 EM-1:EM-1 3.2 162 12(invention) (amount of dye, 1/3 of No. 25-1)24-4 EM-1:EM-20 = 1:1 3.4 167 11(invention) (amount of dye, 1/3 of No. 25-1)24-5 EM-23* 3.4 168 11(invention)24-6 EM-1:EM-21 = 1:1 3.3 165 11(invention)24-7 EM-5:EM-17 = 1:1 3.3 130 35(comparison)24-8 EM-13:EM-17 = 1:1 3.2 100 11(comparison)______________________________________ *EM-23: EM23 has been subjected to gold/sulfur sensitization, to spectral greensensitization by 550 mg of sensitizing dye (A22) and 340 mg of sensitizing dye (A34) per mol AgX and then to stabilization by TAI and 1phenyl-5-mercaptotetrazole.
As can be found from the data in Table 37, the samples of the invention have wide exposure latitude balanced with higher sensitivity and excellent granularity. Additionally, it is possible to perform chemical aging for the emulsion of Sample No. 24-4; and grain growth and chemical aging for the emulsion of Sample No. 24-5 in a single batch. This feature is advantageous in reducing manufacturing cost of sensitive material. Particularly, Sample Nos. 24-4 to 24-6 exhibit stable photographic performance even under a variable processing condition (e.g. pH, temperature). Effect mentioned above was observed about each of samples in which Rh ion in EM-20 and EM-23 was replaced to Ru ion or Os ion. Particularly, Sample Nos. 24-4 to 24-6 exhibit stable photographic performance even under a variable processing condition (e.g. pH, temperature). Effect mentioned above was observed about each of samples in which Rh ion in EM-20 and EM-23 was replaced to Ru ion or Os ion.
EXAMPLE 25
Preparation of Sample No. 25-1
This sample was a modification of Sample No. 12-1: in Layer 3, 0.5 mol equivalent of EM-1 was replaced with EM-17, sensitizing dye A-58 with A-57, and A-59 with A-56; in Layer 4, 0.5 mol equivalent of EM-3 with EM-22, sensitizing dye A-58 with A-57, and A-59 with A-56; in Layer 6, 0.5 mol equivalent of EM-1 was replaced with EM-22, and coupler M-15 with M.sub.4 -4; in Layer 7, 0.5 mol equivalent of EM-3 was replaced with EM-22, and coupler M.sub.4 -4 with M-15; in Layer 9, 0.5 mol equivalent of EM-1 was replaced with EM-17; and in Layer 10, 0.5 mol equivalent of EM-3 was replaced with EM-22.
Preparation of Sample No. 25-2 (comparative)
This sample was prepared in the same manner as Sample No. 25-1, except that EM-1 in Layers 3, 6 and 9 of Sample No. 25-1 was replaced with EM-5, and EM-3 in Layers 4, 7 and 10 with EM-7.
The respective samples were subjected to wedge exposure, and developed as in Example 24. Latitude and granularity were evaluated. The evaluation results are summarized in Table 38.
TABLE 38______________________________________ Latitude GranularitySample No. B G R B G R______________________________________26-1 4.3 4.4 4.2 4.3 4.4 4.2(Invention)26-2 4.4 4.5 4.2 4.4 4.5 4.2(Comparative)______________________________________
B, G, and R mean blue-sensitive, green-sensitive, and red-sensitive layers, respectively.
As can be found from the data in Table 38, the sample of the invention has a wide exposure latitude balanced with excellent granularity.
EXAMPLE 26
The layers specified below were formed on a subbed cellulose acetate support to obtain a multilayer color photosensitive material No. 26-1.
The coated amounts are indicated by g/m.sup.2 as converted to metal silver in silver halide and colloidal silver; by g/m.sup.2 in additives and gelatin; and by mol per mol of silver halide contained in the same layer in sensitizing dye and coupler.
The emulsions contained in the respective emulsion layers were subjected to optimum sensitization in the same manner as Example 24.
______________________________________Layer Major components Amount______________________________________Layer 1 (HC) Black colloidal silver 0.20(anti- Gelatin 1.5halation Ultraviolet absorbent UV-1 0.1layer Ultraviolet absorbent UV-2 0.2 Dioctyl phthalate (DOP) 0.03Layer 2 (IL-1) Gelatin 2.0(intermediate- 2,5-di-tert-octylhydroquinone 0.1layer) (AS-1) DOP 0.1Layer 3 (R-1) EM-5 and EM-17 blended at 1:1 1.5(red- Gelatin 1.4sensitive Sensitizing dye (A-57) 7.5 .times. 10.sup.-5emulsion Sensitizing dye (A-56) 1.3 .times. 10.sup.-5layer) Coupler (C.sub.4 -20) 0.075 Coupler (CC-1) 0.004 Coupler (D-23) 0.0019 Coupler (D-34) 0.005 DOP 0.75Layer 4 (IL-2) Gelatin 0.8(intermediate- AS-1 0.03layer) DOP 0.1Layer 5 (G-1) EM-1 and EM-20 blended at 1:1 1.4(green- Gelatin 1.5sensitive Sensitizing dye (A-22) 3.1 .times. 10.sup.-5emulsion Sensitizing dye (A-34) 1.5 .times. 10.sup.-5layer) Coupler (M.sub.4 -4) 0.056 Coupler (CM-1) 0.011 Coupler (D-23) 0.001 Coupler (D-26) 0.004 Tricresyl phosphate (TCP) 0.6Layer 6 (YC) Gelatin 0.6(yellow- Yellow colloidal silver 0.08filter layer) AS-1 0.1 DOP 0.3Layer 7 (B-1) EM-5 and EM-17 blended at 1:1 0.63(blue- Gelatin 1.4sensitive Sensitizing dye (A-3) 1.6 .times. 10.sup.-5emulsion Coupler (Y-5) 0.36layer) TCP 0.25Layer 8 (Pro-1) Gelatin 0.55(1st protective Ultraviolet absorbent UV-1 0.1layer) Ultraviolet absorbent UV-2 0.2 DOP 0.03 AgBrI (AgI, 1 mol % 0.5 average size, 0.07 .mu.m)Layer 9 (Pro-2) Gelatin 0.5(2nd protective Polymethyl methacrylate 0.2layer) particles (dia., 1.5 .mu.m) Formalin scavenger (HS-1) 3.0 Hardener (H-1) 0.4______________________________________
A surfactant was added to each layer as a coating aid.
Preparation of Sample No. 26-2 (Invention)
This sample was prepared by replacing EM-5 and EM-17 in Layer 7 of Sample No. 26-1 with EM-1 and EM-20, respectively.
Preparation of Sample Nos. 26-3 (Invention)
This sample was prepared by replacing EM-5 and EM-17 in Layers 3 and 7 of Sample No. 26-1 with EM-1 and EM-20, respectively.
The Sample Nos. 26-1 through 26-3 were subjected to wedge exposure by a conventional method, and were developed as in Example 24. Each of the processed samples were evaluated for latitude, sensitivity (S.sub.1), granularity and sharpness. The evaluation results are summarized in Table 39.
Sensitivity was a relative value to that of Sample No. 26-1, which is set at 100.
TABLE 39______________________________________Sample Layer of the Lati- Relative Granu- Sharp-No. invention tude sensitivity larity ness*______________________________________26-1 Green-sensitive 3.6 100 16 100 layer26-2 Blue-sensitive 3.5 101 14 109 layer Green-sensitive layer26-3 All layer 3.5 103 11 121______________________________________ *Sharpness is a relative value to a MTF value of Sample No. 261 at 10 lines/mm, which is set at 100.
As can be found from the data in Table 39, more the layers of the invention, more excellent granularity and sharpness.

Number	Date	Country
62-333934	Dec 1987	JPX
63-65532	Mar 1988	JPX
63-65533	Mar 1988	JPX
63-65534	Mar 1988	JPX
63-69123	Mar 1988	JPX
63-71217	Mar 1988	JPX
63-83600	Apr 1988	JPX
63-96085	Apr 1988	JPX
63-224002	Sep 1988	JPX

Number	Name	Date
3206313	Porter et al.	Sep 1965
3342592	Chu et al.	Sep 1967
4229525	Ueda	Oct 1980
4497895	Matsuzaka et al.	Feb 1985
4684607	Maskasky	Aug 1987
4735894	Ogawa	Apr 1988
4797354	Saitou et al.	Jan 1989
4798775	Yagi et al.	Jan 1989
4952489	Amicucci	Aug 1990

Number	Date	Country
0135883A3	Sep 1984	EPX
0244184	Apr 1987	EPX

	Number	Date
Parent	758419	Sep 1991
Parent	598776	Oct 1990
Parent	428027	Oct 1989
Parent	290954	Dec 1988

Photosensitive silver halide photographic material

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