US4737452A
Expired / Lapsed
US
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Silver halide photographic materials
Assignee: Fujifilm Holdings Corp
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Filing: 1986-11-12
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Granted: 1988-04-12
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Expires: 2006-11-12
Abstract
Abstract A silver halide photographic material comprising a support having at least one silver halide emulsion layer containing substantially surface latent image type silver halide grains, said emulsion layer or at least one hydrophilic colloid layer adjacent to the emulsion layer containing a compound represented by general formula (III): ##STR1## wherein L 2 represents --CONR--, --SO 2 NR-- or --NRCONR' and Z, L 1 , m, Ro, R 1 and M are as herein described. The silver halide photographic material is capable of having high contrast negative images, high sensitive negative images, and good dot images.
Inventors
- 👤 Kimitaka Kameoka
- 👤 Nobuaki Inoue
- 👤 Yoshio Inagaki
- 👤 Hidetoshi Kobayashi
- 👤 Toshiro Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:25
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/346; G03C1/061; Y; Y10; Y10S; Y10S430/00; Y10S430/15
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
175 words
A silver halide photographic material comprising a support having at least one silver halide emulsion layer containing substantially surface latent image silver halide grains, said emulsion layer or at least one hydrophilic colloid layer adjacent to the emulsion layer containing a compound represented by general formula (III): ##STR15## wherein Z represents an atomic group necessary for forming a monocyclic or condensed heterocyclic ring composed of a carbon atom or carbon atoms and a nitrogen atom or nitrogen atoms; L 1 represents a divalent organic group selected from the group consisting of: ##STR16## m represents 0 or 1; G represents phenylene or naphthylene which may have one or more substituents; M represents a formyl group; R 0 represents a hydrogen atom; and L 2 represents --CONR--, --SO 2 NR-- or --NRCONR'--, wherein R and R' each represents a hydrogen atom, an alkyl group or an aryl group; R 1 represents a hydrogen atom, said M, R 1 and the nitrogen atom to which M and R 1 attach may form a partial structure ##STR17## of hydrazone.
Claim 2
Dependent Claim
175 words
A silver halide photographic material comprising a support having at least one silver halide emulsion layer containing substantially surface latent image silver halide grains, said emulsion layer or at least one hydrophilic colloid layer adjacent to the emulsion layer containing a compound represented by general formula (III): ##STR15## wherein Z represents an atomic group necessary for forming a monocyclic or condensed heterocyclic ring composed of a carbon atom or carbon atoms and a nitrogen atom or nitrogen atoms; L 1 represents a divalent organic group selected from the group consisting of: ##STR16## m represents 0 or 1; G represents phenylene or naphthylene which may have one or more substituents; M represents a formyl group; R 0 represents a hydrogen atom; and L 2 represents --CONR--, --SO 2 NR-- or --NRCONR'--, wherein R and R' each represents a hydrogen atom, an alkyl group or an aryl group; R 1 represents a hydrogen atom, said M, R 1 and the nitrogen atom to which M and R 1 attach may form a partial structure ##STR17## of hydrazone.
Claim 3
Dependent Claim
91 words
The silver halide photographic material as claimed in claim 1, wherein the compound shown by general formula (III) is the compound represented by general formula (V): ##STR18## wherein L 1 , L 2 , m, R 0 , R 1 , and M have the same significance as defined in regard to general formula (III) and R 2 and R 3 each represents a hydrogen atom, an alkyl group, an alkoxy group, a carbonamido group, a sulfonamido group, or a halogen atom; and a and b are each 0 to 4.
Claim 4
Dependent Claim
72 words
A silver halide photographic material as claimed in claim 1, wherein R 1 in the general formula (III) represents a hydrogen atom or forms a partial structure ##STR19## of hydrazone with M and the nitrogen atom to which R 1 and M attach; wherein R" represents an alkyl group, an aryl group or a heterocyclic group and R'" represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group.
Claim 5
Dependent Claim
58 words
A silver halide photographic material as claimed in claim 1, wherein R 1 in the general formula (III) represents a hydrogen atom or forms a partial structure ##STR20## of hydrazone with L 2 and the nitrogen atom to which R 1 and L 2 attach; wherein R" represents an alkyl group, an aryl group or a heterocyclic group.
Claim 6
Dependent Claim
42 words
A silver halide photographic material as claimed in claim 1, wherein the amount of the compound represented by the general formula (III) is 1×10 -6 to 1×10 -3 mol per mol of silver in the surface latent image type silver halide emulsion.
Claim 7
Dependent Claim
36 words
The silver halide photographic material as claimed in claim 1, wherein Z represents a heterocyclic ring selected from the group consisting of pyrrole, pyrazole, imidazole, triazole, tetrazole, pyridine, pyrimidine, pyrazine, pyridazine, triazine, indazole, benzimidazole and azaindene.
Claim 8
Dependent Claim
27 words
The silver halide photographic material as claimed in claim 1, wherein Z represents a heterocyclic ring selected form the group consisting of triazole, tetrazole, imidazole and benzimidazole.
Claim 9
Dependent Claim
32 words
The silver halide photographic material as claimed in claim 1, wherein L 1 represents a member selected from the group consisting of --CH 2 -- 2 or --CH 2 -- 3 .
Claim 10
Dependent Claim
39 words
The silver halide photographic material as claimed in claim 1, wherein G is substituted with a member selected from the group consisting of an alkyl group, a halogen atom, an alkoxy group, a carbonamido group and a sulfonamido group.
Claim 11
Dependent Claim
15 words
The silver halide photographic material as claimed in claim 1, wherein L 2 is --CONR--.
Claim 12
Dependent Claim
34 words
The silver halide photographic material as claimed in claim 1, wherein R and R' are selected from the group consisting of a hydrogen atom, a methyl group, an ethyl group and a phenyl group.
Claim 13
Dependent Claim
17 words
The silver halide photographic material as claimed in claim 1, wherein R and R' are hydrogen alone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |