Claims
- 1. A negative silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer comprising a silver halide emulsion comprising regular silver halide grains containing from 0.3 mol % to 3.0 mol % of silver iodide, said silver halide grains being produced by conversion of silver halide host grains using high silver iodide silver halide grains comprising silver iodide, silver iodobromide, silver iodochlorobromide or silver iodochloride having a silver iodide content of at least 90 mol % in an amount sufficient to provide from 0.1 mol % to 2.5 mol % of silver iodide based on the total silver halide content of the silver halide host grains and the high silver iodide grains, said silver halide host grains comprising silver bromide or silver iodobromide having a silver iodide content of at most 2.5 mol % and a mean grain size of at most 0.7 .mu.m, wherein said conversion is performed in the presence of a compound represented by formula (A): ##STR34## wherein Z.sub.11 and Z.sub.12, which may be the same or different each represents an atomic group necessary for forming a thiazole nucleus, a thiazoline nucleus, a benzothiazole nucleus, a naphthothiazole nucleus, an oxazole nucleus, a benzoxazole nucleus, an oxazoline nucleus, a naphthozazole nucleus, an imidazole nucleus, a benzimidazole nucleus, an imidazoline nucleus, a selenazole nucleus, a selenazoline nucleus, a benzoselenazole nucleus or a naphthoselsenazole nucleus; R.sub.11 and R.sub.12, which may be the same or different, each represents a substituted or unsubstituted alkyl group, provided that at least one of R.sub.11 and R.sub.12 comprises a sulfo group or a carboxy group; L.sub.11 and L.sub.12 each represents a substituted or unsubstituted methine group; and n is from 0, 1 or 2.
- 2. A negative silver halide photographic material as claimed in claim 1, wherein the amount of high silver iodide silver halide grains used for conversion is an amount sufficient to provide from 0.3 mol % to 1.5 mol % of silver iodide based on said total silver halide content.
- 3. A negative silver halide photographic material as claimed in claim 1, wherein the average silver iodide content per grain, including said host silver halide grains and said high silver iodide grains, is from 0.5 mol % to 2.0 mol %.
- 4. A negative silver halide photographic material as claimed in claim 1, wherein said host silver halide grains are present in a monodisperse emulsion.
- 5. A negative silver halide photographic material as claimed in claim 1, wherein said high silver iodide silver halide grains are contained in a superfine grain emulsion that is added to an emulsion comprising said host silver halide grains.
- 6. A negative silver halide photographic material as claimed in claim 1, wherein said nucleus formed by Z.sub.11 or Z.sub.12 comprises at least one substituent selected from an alkyl group, an alkoxy group, an alkoxycarbonyl group, an aryl group, an aralkyl group, and a halogen atom.
- 7. A negative silver halide photographic material as claimed in claim 1, wherein said alkyl group represented by R.sub.11 or R.sub.12 is substituted with at least one carboxy group, sulfo group, cyano group, halogen atom, hydroxyl group, alkoxycarbonyl group, alkoxy group, aryloxy group, acyloxy group, acyl group, carbamoyl group, sulfamoyl group, or aryl group.
- 8. A negative silver halide photographic material as claimed in claim 1, wherein said methine group represented by L.sub.11 or L.sub.12 is substituted with at least one lower alkyl group, phenyl group, or a benzyl group.
- 9. A negative silver halide photographic material as claimed in claim 1, wherein said high silver iodide silver halide grains have a mean grain size of at most 0.1 .mu.m.
- 10. A negative silver halide photographic material as claimed in claim 1, wherein the amount of said compound represented by formula (A) present during conversion is from 1.times.10.sup.-6 mol to 1.times.10.sup.-1 mol per mol of silver contained in said host silver halide grains and said high silver iodide grains.
- 11. A negative silver halide photographic material as claimed in claim 1, wherein the silver halide host grains are prepared in the presence of from 10.sup.-8 to 10.sup.-5 mol of an iridium salt or a complex salt thereof per mol of silver in said host grains.
- 12. A negative silver halide photographic material as claimed in claim 1, wherein said photographic material further comprises at least one hydrazine derivative in said silver halide emulsion layer or an other hydrophilic colloidal layer.
- 13. A negative silver halide photographic material as claimed in claim 12, wherein said hydrazine derivative is a compound represented by formula (I): ##STR35## wherein R.sub.1 represents an aliphatic group or an aromatic group; R.sub.2 represents hydrogen, an alkyl group, an aryl group, an alkoxyl group, an aryloxy group, an amino group, a hydrazino group, a carbamoyl group, or an oxycarbonyl group; G.sub.1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, ##STR36## wherein R.sub.2 is as defined above, ##STR37## a thiocarbonyl group, or an aminomethylene group; A.sub.1 and A.sub.2 each represents hydrogen, or one of A.sub.1 and A.sub.2 represents hydrogen, and the other represents a substituted or unsubstituted alkylsulfonyl group, a substituted or unsubstituted arylsulfonyl group, or a substituted or unsubstituted acyl group.
- 14. A negative silver halide photographic material as claimed in claim 13, wherein R.sub.1 represents an aryl group; G.sub.1 represents a carbonyl group; and R.sub.2 represents hydrogen, an alkyl group, an aralkyl group or an aryl group.
- 15. A negative silver halide photographic material as claimed in claim 13, wherein R.sub.2 represents a group represented by formula (a):
- --R.sub.3 --Z.sub.1 (a)
- wherein Z.sub.1 represents a group which nucleophilically attacks G.sub.1 to split the G.sub.1 --R.sub.3 --Z.sub.1 moiety from the remainder; R.sub.3 represents a group derived by removing one hydrogen from R.sub.2 ; and R.sub.3 and Z.sub.1 form a cyclic structure together with G.sub.1 upon nucleophilic attack of Z.sub.1 on G.sub.1.
- 16. A negative silver halide photographic material as claimed in claim 15, wherein said group represented by formula (a) is a group represented by formulae (b) or (c): ##STR38## wherein Z.sub.1 is as defined in formula (a); R.sub.b.sup.1, R.sub.b.sup.2, R.sub.b.sup.3, and R.sub.b.sup.4, which may be the same or different, each represents hydrogen, an alkyl group, an alkenyl group or an aryl group; B represents an atomic group necessary to form a substituted or unsubstituted 5-membered or 6-membered ring; m and n each represents 0 or 1; and (n+m) is 1 or 2; and ##STR39## wherein Z.sub.1 is as defined in formula (a); R.sub.c.sup.1 and R.sub.c.sup.2, which may be the same or different, each represents hydrogen, an alkyl group, an alkenyl group, an aryl group, or a halogen atom; R.sub.c.sup.3 represents hydrogen, an alkyl group, an alkenyl group, or an aryl group; p represents 0 or 1; q represents an integer of from 1 to 4; and R.sub.c.sup.1, R.sub.c.sup.2, and R.sub.c.sup.3 may be linked to form a ring as long as Z.sub.1 is capable of intramolecular nucleophilic attack on G.sub.1.
- 17. A negative silver halide photographic material as claimed in claim 13, wherein A.sub.1 and A.sub.2 each represents hydrogen.
- 18. A negative silver halide photographic material as claimed in claim 13, wherein at least one of R.sub.1 and R.sub.2 contains a group which accelerates adsorption onto surfaces of silver halide grains.
- 19. A negative silver halide photographic material as claimed in claim 12, wherein said hydrazine derivative is present in said layer in an amount of from 1.times.10.sup.-6 mol to 5.times.10.sup.-2 mol per mol of silver halide in said silver halide emulsion layer.
- 20. A negative silver halide photographic material as claimed in claim 12, wherein said silver halide emulsion layer or another hydrophilic colloid layer of said photographic material further comprises a redox compound capable of releasing a development inhibitor upon being oxidized.
- 21. A negative silver halide photographic material as claimed in claim 20, wherein said redox compound is represented by formula (II): ##STR40## wherein B.sub.1 and B.sub.2 each represents hydrogen or one of them represents hydrogen and the other represents a sulfinic acid group or ##STR41## wherein R.sub.0 represents an alkyl group, an alkenyl group, an aryl group, an alkoxy group or an aryloxy group, and l represents 1 or 2; Time represents a divalent linking group; t represents 0 or 1; PUG represents a development inhibitor group; V represents a carbonyl group, ##STR42## a sulfonyl group, a sulfoxy group, an imino methylene group, a thiocarbonyl group, or ##STR43## wherein R.sub.1 represents an alkoxy group or an aryloxy group; and R represents an aliphatic group, an aromatic group or a heterocyclic group.
- 22. A negative silver halide photographic material as claimed in claim 21, wherein B.sub.1 and B.sub.2 each represents hydrogen.
- 23. A negative silver halide photographic material as claimed in claim 21, wherein said development inhibitor represented by PUG is a group derived from a mercaptotetrazole, mercaptotriazole, mercaptoimidazole, mercaptopyrimidine, mercaptobenzimidazole, mercaptobenzothiazole, mercaptobenzoxazole, mercaptothiadiazole, benzotriazole, benzimidazole, indazole, adenine, guanine, tetrazole, tetraazaindene, triazaindene, or mercaptoaryl.
- 24. A negative silver halide photographic material as claimed in claim 21, wherein said development inhibitor is substituted with at least one substituent selected from an alkyl group, an aralkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an aryl group, a substituted amino group, an acylamino group, a sulfonylamino group, a ureido group, a urethane group, an aryloxy group, a sulfamoyl group, a carbamoyl group, an alkylthio group, an arylthio group, a sulfonyl group, a sulfinyl group, a hydroxy group, a halogen atom, a cyano group, a sulfo group, an aryloxycarbonyl group, an acyl group, an alkoxycarbonyl group, an acyloxy group, a carbonamido group, a sulfonamido group, a carboxy group, a sulfoxy group, a phosphono group, a phosphinyl group, and a phosphonamido group.
- 25. A negative silver halide photographic material as claimed in claim 21, wherein V represents a carbonyl group.
- 26. A negative silver halide photographic material as claimed in claim 20, wherein the amount of said redox compound is from 1.0.times.10.sup.-6 mol to 5.0.times.10.sup.-2 mol per mol of silver halide in said silver halide emulsion layer.
Priority Claims (2)
Number |
Date |
Country |
Kind |
1-187701 |
Jul 1989 |
JPX |
|
1-239275 |
Sep 1989 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 07/555,954 filed Jul. 20, 1990, now abandoned.
US Referenced Citations (7)
Continuations (1)
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Number |
Date |
Country |
Parent |
555954 |
Jul 1990 |
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