Claims
- 1. A direct positive silver halide photographic emulsion, in which the silver halide grains thereof have been fogged to maximum density, containing from one mg to 200 mg per Kg of said emulsion, of a dye represented by the following formula: ##SPC6##
- wherein R and R.sub.1 are selected from the group consisting of an alkyl group, an allyl group, a substituted alkyl group selected from the group consisting of a 2-hydroxyethyl group, a 3-hydroxypropyl group, a 2-methoxyethyl group, a ketaacetoxyethyl group, a gamma- acetoxypropyl group, a carboxylalkyl group, a sulfoalkyl group, and a phenylethyl group, an aryl group, and a substituted aryl group selected from the group consisting of a methoxyphenyl group and a chlorophenyl group, at least one of said R and R.sub.1 being a carboxylalkyl group or a sulfoalkyl group; R.sub.2 and R.sub.3 are selected from the group consisting of an alkyl group, an aralkyl group, and an allyl group; L.sub.1 is selected from the group consisting of a methine group and an atomic group capable of combining with R, R.sub.2 or R.sub.3 to form a 5- or 6-membered ring; R.sub.2 represents a methine group; L.sub.3 represents a member selected from the group consisting of a methine group and an atomic group capable of forming a 5- or 6-membered ring with R.sub.1, or with a 3,3-substituent of an indolenine ring, such that a ring may be formed by L.sub.1 and L.sub.3 ; X represents an anion; n and m each represents an integer of 1 and 2, respectively, such that when said dye forms an intramolecular salt, m is 1; Z represents an atomic group capable of completing an unsubstituted benzene ring, an unsubstituted naphthalene ring, or a lower alkyl-, lower alkoxy-, chloro-lower alkoxy- carbonyl- substituted benzene ring; and Z.sub.1 represents a non-metallic atomic group capable of completing a 5- or 6-membered heterocyclic ring, said ring being a member selected from the group consisting of a 4-methylthiazole ring, a 4-phenylthiazole ring, a 5-methylthiazole ring, a 5-phenylthiazole ring, a 4,5-dimethylthiazole ring, a 4,5-diphenylthiazole ring, a 4-(2-thienyl)-thiazole ring, an unsubstituted thiazole ring, an unsubstituted benzothiazole ring, a 4-chlorobenzothiazole ring, a 5-chlorobenzothiazole ring, a 6-chlorobenzothiazole ring, a 7-chlorobenzothiazole ring, a 4-methylbenzothiazole ring, a 5-methylbenzothiazole ring, a 6-methylbenzothiazole ring, a 5-bromobenzothiazole ring, a 6-bromobenzothiazole ring, a 5-phenylbenzothiazole ring, a 6-phenylbenzothiazole ring, a 4-methoxybenzothiazole ring, a 5-methoxybenzothiazole ring, a 6-methoxybenzothiazole ring, a 5-iodobenzothiazole ring, a 6-iodobenzothiazole ring, a 4-ethoxybenzothiazole ring, a 5-ethoxybenzothiazole ring, a tetrahydrobenzothiazole ring, a 5,6-dimethoxybenzothiazole ring, a 5,6-dimethylbenzothiazole ring, a 5-hydroxybenzothiazole ring, a 6-hydroxybenzothiazole ring, an unsubstituted alpha-naphthothiazole ring, an unsubstituted beta-naphthothiazole ring, an unsubstuttuted beta, beta-naphthothiazole ring, a 5-methoxy-beta, beta-naphthothiazole ring, a 5-ethoxy-beta-naphthothiazole ring, an 8-methoxy-alpha-naphthothiazole ring, a 7-methoxy-alpha-naphthothiazole ring, a 4'-methoxythionaphthene-7', 6', 4', 5-thiazole ring, an unsubstituted oxazole ring, a 4-methyloxazole ring, a 5-methyloxazole ring, a 4-phenyl-oxazole ring, a 4,5-diphenyloxazole ring, 4,5-dimethyloxazole ring, 4-ethyloxazole ring, a 5-phenyloxazole ring, an unsubstituted benzoxazole ring, a 5-chlorobenzoxazole ring, a 5-methylbenzoxazole ring, a 5-phenylbenzoxazole ring, a 6-methylbenzoxazole ring, a 4,6-dimethylbenzoxazole ring, a 5-methoxybenzoxazole ring, a 5-ethoxybenzoxazole ring, a 5-bromobenzoxazole ring, a 5-iodobenzoxazole ring, a 6-methoxybenzoxazole ring, a 5-hydroxybenzoxazole ring, a 6-hydroxybenzoxazole ring, an unsubstituted selenazole ring, a 4-methylselenazole ring, a 4-phenylselenazole ring, a benzoselenazole ring, a 5-chlorobenzoselenazole ring, a 5-methoxybenzoselenazole ring, a 5-hydroxybenzoselenazole ring, a tetrahydrobenzoselenazole ring, an alpha-naphthoselenazole ring, a beta-naphthoselenazole ring, unsubstituted thiazoline ring, a 4-methylthiazoline ring, an unsubstituted oxazoline ring, an unsubstituted pyridine ring, an unsubstituted 2-pyridine ring, a 5-methyl-2-pyridine ring, an unsubstituted 4-pyridine ring, a 3-methyl-4-pyridine ring, an unsubstituted quinoline ring, an unsubstituted 2-quinoline ring, a 3-methyl-2-quinoline ring, a 5-ethyl-2-quinoline ring, a 6-chloro-2-quinoline ring, an 8-chloro-2-quinoline ring, a 6-methoxy-2-quinoline ring, an 8-hydroxy-2-quinoline ring, an 8-methyl-2-quinoline ring, an unsubstituted 4-quinoline ring, a 6-methoxy-4-quinoline ring, a 7-methyl-4-quinoline ring, an 8-chloro-4-quinoline ring, an unsubstituted 1-isoquinoline ring, a 3,4-dihydro-1isoquinoline ring, an unsubstituted 3-isoquinoline ring, a 3,3-dimethyl-idolenine ring, a 3,3,5-trimethylindolenine ring, a 3,3-dimethyl-5-methoxy-indoleneine ring, a 3,3-dimethyl-5-ethoxycarbonyl-indolenine ring, a 3,3,5,6-tetramethyl-indoleneine ring, a 3,3-diethyl-indolenine ring, a 3,3-dibenzylindolenine ring, a 3,3-diallylindolenine ring, a 3,3-dimethyl-5-cyanoindolenine ring, a 3,3-dimethyl-6-cyanoindolenine ring, a 3,3-dimethyl-5-chloroindolenine ring, a 3,3-dimethylbenzoindolenine ring, a 3,3-dimethylbenzoindolenine ring, an unsubstituted imidazole ring, a 1-alkyl-imidazole ring, a 1-alkyl-4-phenyl-imidazole, a 1-alkyl-4,5-dimethylimidazole ring, an unsubstituted benzimidazole ring, a 1-alkylbenzimidazole ring, a 1-aryl-5,6-dichlorobenzimidazole ring, a 1-alkyl-alpha-naphthoimidazole ring, a 1-aryl-beta-naphthiomidazole ring and a 1-alkyl-5-methoxy-alpha-naphthoimidazole ring wherein for Z.sub.1 of oxazole or benzoxazole any benzoxazole moiety contains a greater number of aromatic rings than an oxazole moiety.
- 2. The emulsion as claimed in claim 1 wherein from 10 mg to 100 mg of said dye is present per one Kg of said emulsion.
- 3. The emulsion of claim 1 where the fogging is chemical fogging.
- 4. The emulsion of claim 1 where the fogging is with light.
- 5. The emulsion of claim 1 wherein the mean particle size of the silver halide in said emulsion is less than 0.6 .mu..
- 6. The emulsion of claim 1 which further comprises an organic desensitizer which as the ability to trap free electrons generated in the silver halide particles upon exposure to radiant energy, which organic desensitizer is absorbed by the silver halide particles.
- 7. The emulsion of claim 6 wherein from 2 .times. 10.sup..sup.-7 to 10.sup..sup.-1 mols of said organic desensitizer per mol of silver halide present in the emulsion is used.
- 8. The emulsion of claim 1 which comprises nuclei for trapping free electrons in the interior of the silver halide of said emulsion, the surface of which silver halide has been chemically fogged.
- 9. The emulsion of claim 1 wherein said emulsion does not have free electrons trapping nuclei in the interior of the silver halide but wherein the surface of the silver halide of said emulsion is chemically fogged.
- 10. The emulsion of claim 9 having an organic desensitizer adsorbed on the surface thereof.
- 11. The emulsion of claim 10 containing from 2 .times. 10.sup..sup.-7 to 10.sup..sup.-1 mols of said organic desensitizer per mol of silver halide.
- 12. The emulsion of claim 1, wherein L.sub.1 and L.sub.3 are methine groups.
- 13. The emulsion of claim 1, wherein if R combines with L.sub.1 to form said ring it is a five-membered nitrogen containing heterocylic ring;
- if R.sub.1 combines with L.sub.3 to form said ring, it is a five-membered nitrogen contained heterocylic ring; and
- if L.sub.1 combines with R.sub.2 and R.sub.3 to form said ring, it is a six-membered non-heterocylic ring.
- 14. The emulsion of claim 1, wherein said oxazole ring is selected from the group consisting of alkyl, dialkyl, phenyl or diphenyl oxazole substituted rings, and said benzoxazole rings are selected from the group consisting of benzoxazole, 5-chlorobenzoxoazole, 5-methylbenzoxazole, 5-phenylbenzoxazole, 6-methylbenzoxazole, 4,6-dimethylbenzoxazole, 5-methoxybenzoxazole, 5-ethoxybenzoxazole, 5-bromobenzoxazole, 5-iodobenzoxazole, 6-methoxybenzoxazole, 5-hydroxybenzoxazole, and 6-hydroxybenzoxazole.
Priority Claims (1)
Number |
Date |
Country |
Kind |
45-86241 |
Oct 1970 |
JA |
|
CROSS-REFERENCES TO RELATED APPLICATIONS
This application is a continuation in part of U.S. Application Ser. No. 185,819 filed Oct. 1, 1971 by Shiba et al and entitle "Direct Positive Silver Halide Photographic Emulsion", now abandoned and claiming the priority of Japanese Application 86241/70 filed Oct. 1, 1970, a certified copy thereof having been lodged therein.
US Referenced Citations (6)
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
185819 |
Oct 1971 |
|