US4818667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide color photographic material
Assignee: Konica Minolta Inc
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Filing: 1987-01-12
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Granted: 1989-04-04
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Expires: 2007-01-12
Abstract
Abstract In a silver halide color photographic material which has red-, green- and blue-sensitive silver halide emulsion layers on a support, the improvement wherein the total thickness of the hydrophilic colloid layers is not more than 18 μm on a dry basis and at least one silver halide emulsion layer contains a cyan dye-forming coupler represented by the following general formula (I): ##STR1## where R 1 is an optionally substituted alkyl, aryl or heterocyclic group; Ar is an optionally substituted aryl group; and X is a group that may be eliminated upon coupling reaction with the oxidized product of a color developing agent.
Inventors
- 👤 Fumio Hamada
- 👤 Hiroshi Shimazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:17
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/34; G03C7/346; G03C7/305; G03C7/30511; G03C7/30517; G03C7/30523
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
A silver halide color photographic material which has red-, green- and blue-sensitive silver halide emulsion layers with interlayers being interposed between said emulsion layers to form hydrophilic colloid layers on a support, wherein the total thickness of the hydrophilic colloid layers is not more than 18 μm on a dry basis and at least one silver halide emulsion layer contains a cyan dye-forming coupler represented by the following general formula (I): ##STR142## where R 1 is an optionally substituted alkyl, aryl or heterocyclic grpoup; Ar is an optionally substituted aryl group; and X is a group that may be eliminated upon coupling reaction with the oxidized product of a color developing agent.
Claim 2
Dependent Claim
112 words
A silver halide color photographic material which has red-, green- and blue-sensitive silver halide emulsion layers with interlayers being interposed between said emulsion layers to form hydrophilic colloid layers on a support, wherein the total thickness of the hydrophilic colloid layers is not more than 18 μm on a dry basis and at least one silver halide emulsion layer contains a cyan dye-forming coupler represented by the following general formula (I): ##STR142## where R 1 is an optionally substituted alkyl, aryl or heterocyclic grpoup; Ar is an optionally substituted aryl group; and X is a group that may be eliminated upon coupling reaction with the oxidized product of a color developing agent.
Claim 3
Dependent Claim
28 words
A silver halide color photographic material according to claim 1, wherein the total thickness of the hydrophilic colloid layers is 5 to 18 μm on a dry basis.
Claim 4
Dependent Claim
28 words
A silver halide color photographic material according to claim 1, wherein the total thickness of the hydrophilic colloid layers is 10 to 16 μm on a dry basis.
Claim 5
Dependent Claim
24 words
A silver halide color photographic material according to claim 1, wherein said cyan dye-forming coupler is incorporated in said red-sensitive silver halide emulsion layer.
Claim 6
Dependent Claim
31 words
A silver halide color photographic material according to claim 1, wherein said cyan dye-forming coupler is incorporated in an amount ranging from 0.005 to 5.0 moles per mole of silver halide.
Claim 7
Dependent Claim
31 words
A silver halide color photographic material according to claim 1, wherein said cyan dye-forming coupler is incorporated in an amount ranging from 0.01 to 2.0 moles per mole of silver halide.
Claim 8
Dependent Claim
26 words
A silver halide color photographic material according to claim 1, wherein R 1 in said formula (I) represents a substituted or unsubstituted alkyl or aryl group.
Claim 9
Dependent Claim
19 words
A silver halide color photographic material according to claim 7, wherein said R 1 represents a substituted alkyl group.
Claim 10
Dependent Claim
59 words
A silver halide color photographic material according to claim 7, wherein said R 1 represents an alkyl group represented by the following formula (II): ##STR143## wherein J is an oxygen or sulfur atom; k is an integer of 0 to 4; b is 0 or 1; R 2 is a monovalent group; and R 3 is an alkyl group.
Claim 11
Dependent Claim
32 words
A silver halide color photographic material according to claim 1, wherein at least one of said hydrophilic colloid layers is a non-light-sensitive hydrophilic colloid layer containing a fine particulate, non-light-sensitive silver halide.
Claim 12
Dependent Claim
22 words
A silver halide color photographic material according to claim 10, wherein said non-light-sensitive hydrophilic colloid layer is positioned farthest from the support.
References Cited (Backward Citations)
US4389479A
Cited
US4434225A
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US4458012A
Cited
US4518683A
Cited
US4584264A
Cited
US4707434A
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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) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |