US4871658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic material that is resistant to fogging during storage
Assignee: Konica Minolta Inc
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Filing: 1988-12-02
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Granted: 1989-10-03
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Expires: 2008-12-02
Abstract
Abstract A silver halide photographic material is disclosed which comprises a support coated with photographic layers including one or more silver halide emulsion layers, at least one of said silver halide emulsion layers containing silver halide grains with a silver iodide content of 3.0-15 mol %, and at least one of said photographic layers containing a compound represented by the following general formula (I): ##STR1## where Y is an aromatic group or a 5- or 6-membered heterocyclic group.
Inventors
- 👤 Eiichi Sakamoto
- 👤 Yutaka Kaneko
- 👤 Hidetaka Ninomiya
- 👤 Takashi Kamio
- 👤 Atsuo Ezaki
- 👤 Hideo Akamatsu
- 👤 Hideaki Haraga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/3924; G03C7/39244; G03C7/3926
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
123 words
A silver halide photographic material comprising a support which is coated with photographic layers including one or more silver halide emulsion layers, said emulsion being a negative-working emulsion containing surface latent image type grains, at least one of said silver halide emulsion layers containing silver halide grains with a silver iodide content of 3.0-15 mol %, and at least one of said photographic layers containing a compound represented by the following formula (I): ##STR45## where Y is a 5- or 6-membered heterocyclic group selected from the group consisting of 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-quinolyl, 3-quinolyl, 4-quinolyl, 6-quinolyl, 2-thienyl, 3-furyl, 3-pyrolyl, 2-imidazolyl, 2-pyrimidinyl, 3-pyridazinyl, 3-isoquinolyl, 2-thiazolyl, and 5,6-benzo-1,4-diazinyl, the compound of formula (I) being present in an amount effective to inhibit the occurrence of fogging.
Claim 2
Dependent Claim
123 words
A silver halide photographic material comprising a support which is coated with photographic layers including one or more silver halide emulsion layers, said emulsion being a negative-working emulsion containing surface latent image type grains, at least one of said silver halide emulsion layers containing silver halide grains with a silver iodide content of 3.0-15 mol %, and at least one of said photographic layers containing a compound represented by the following formula (I): ##STR45## where Y is a 5- or 6-membered heterocyclic group selected from the group consisting of 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-quinolyl, 3-quinolyl, 4-quinolyl, 6-quinolyl, 2-thienyl, 3-furyl, 3-pyrolyl, 2-imidazolyl, 2-pyrimidinyl, 3-pyridazinyl, 3-isoquinolyl, 2-thiazolyl, and 5,6-benzo-1,4-diazinyl, the compound of formula (I) being present in an amount effective to inhibit the occurrence of fogging.
Claim 3
Dependent Claim
29 words
A silver halide photographic material according to claim 1, wherein said silver halide grains with a silver iodide content of 3.0-15 mol % are core/shell type silver halide grains.
Claim 4
Dependent Claim
155 words
A silver halide photographic material according to claim 1, which contains a yellow dye forming coupler represented by the following formula (Y): ##STR46## where R 1 , R 2 and R 3 , which may be the same or different, each represents 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 4 , R 5 , R 6 and R 7 , which may be the same or different, each represents a hydrogen atom, an alkyl group, an alkoxy group, an aryloxy group, an acylamino group or a sulfonamide group; W represents a halogen atom, an alkyl group, an alkoxy group, an aryloxy group or a dialkylamino group; and X represents a hydrogen atom or a group capable of leaving upon coupling reaction with the oxidized product of a color developing agent.
Claim 5
Dependent Claim
140 words
A silver halide photographic material according to claim 1, which contains at least one magenta dye forming coupler selected from those represented by the following formulas (M-1) and (M-2): ##STR47## where R 1 and R 2 each represents an alkyl group, an aryl group or a heterocyclic group, or an alkyl, aryl or heterocyclic group bonded through an oxygen atom, a nitrogen atom or a sulfur atom, or an alkyl, aryl or heterocyclic group bonded through an acylamino group, a carbamoyl group, a sulfonamide group, a sulfamoylcarbonyl group, a carbonyloxy group, an oxycarbonyl group, a ureide group, a thioureide group, a thioamide group, a sulfo group or a sulfonyloxy group; and Z represents a hydrogen atom or a group which leaves upon formation of a dye through coupling with the oxidized product of an aromatic primary amine color developing agent.
Claim 6
Dependent Claim
43 words
A silver halide photographic material according to claim 1, which contains a compound that reacts with the oxidized product of a color developing agent as a function of the development of silver halide emulsion layers but that does not contribute to image formation.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-02 | 1993-04-03 | 1993-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-02 | 1997-04-03 | 1997-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-02 | 2001-04-03 | 2001-10-03 | $7700.00 | Window Closed / Lapsed |