US4640889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive silver halide multi-layer color photographic material
Assignee: Konica Minolta Inc
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Filing: 1985-04-15
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Granted: 1987-02-03
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Expires: 2005-04-15
Abstract
Abstract Disclosed is a light-sensitive silver halide multi-layer color photographic material having a light-sensitive silver halide emulsion layer combined with a non-diffusion coupler on a support, which comprises a light-sensitive silver halide emulsion layer farthest from the support which contains mono-dispersed silver halide grains comprising primarily (100) faces and having an average grain size of 0.2 to 0.8 μm. The light-sensitive silver halide multi-layer color photographic material of the present invention has stable performance against fluctuations in developing processing conditions, has high sensitivity and low fogging.
Inventors
- 👤 Kazuo Komorita
- 👤 Masanobu Miyoshi
- 👤 Kaoru Onodera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:29
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3022; G03C1/00; G03C1/005; G03C1/035; G03C2001/0357
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
154 words
A light-sensitive silver halide multi-layer color photographic material having a light-sensitive silver halide emulsion layer on a support, comprising a red-light-sensitive silver halide emulsion layer, a green-light-sensitive silver halide emulsion layer and a blue-light-sensitive silver halide emulsion layer, said red-light-sensitive silver halide emulsion layer being the light-sensitive silver halide emulsion layer farthest from the support and containing mono-dispersed silver halide grains comprising primarily (100) faces and having an average grain size of 0.2 to 0.8μ and a non-diffusion cyan coupler represented by the formula: ##STR5## wherein R 1 represents an aryl group, a cycloalkyl group or a heterocyclic group; R 2 represents an alkyl group or a phenyl group; R 3 represents a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group; Z 1 represents a hydrogen atom, a halogen atom or an eliminable group through the reaction with the oxidized product of an aromatic primary amine type color developing agent.
Claim 2
Dependent Claim
154 words
A light-sensitive silver halide multi-layer color photographic material having a light-sensitive silver halide emulsion layer on a support, comprising a red-light-sensitive silver halide emulsion layer, a green-light-sensitive silver halide emulsion layer and a blue-light-sensitive silver halide emulsion layer, said red-light-sensitive silver halide emulsion layer being the light-sensitive silver halide emulsion layer farthest from the support and containing mono-dispersed silver halide grains comprising primarily (100) faces and having an average grain size of 0.2 to 0.8μ and a non-diffusion cyan coupler represented by the formula: ##STR5## wherein R 1 represents an aryl group, a cycloalkyl group or a heterocyclic group; R 2 represents an alkyl group or a phenyl group; R 3 represents a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group; Z 1 represents a hydrogen atom, a halogen atom or an eliminable group through the reaction with the oxidized product of an aromatic primary amine type color developing agent.
Claim 3
Dependent Claim
43 words
A light-sensitive silver halide multi-layer color photographic material according to claim 1, wherein said mono-dispersed silver halide grains have a value of the standard deviation S of the distribution of grain sizes divided by the average grain size r of 0.20 or less.
Claim 4
Dependent Claim
43 words
A light-sensitive silver halide multi-layer color photographic material according to claim 2, wherein said mono-dispersed silver halide grains have a value of the standard deviation S of the distribution of grain sizes divided by the average grain size r of 0.15 or less.
Claim 5
Dependent Claim
32 words
A light-sensitive silver halide multi-layer color photographic material according to claim 1, wherein the range of an average grain size of said mono-dispersed silver halide grains is from 0.25 to 0.6 μm.
Claim 6
Dependent Claim
27 words
A light-sensitive silver halide multi-layer color photographic material according to claim 1, wherein crystal habits of said mono-dispersed silver halide grains are cubic grains and/or tetradecahedral grains.
Claim 7
Dependent Claim
49 words
A light-sensitive silver halide multi-layer color photographic material according to claim 1, wherein said mono-dispersed silver halide grains satisfy the relation of 5≦K≦500 wherein K={intensity of diffracted ray attributable to (200) face}/{intensity of diffracted ray attributable to (222) face} which is measured according to the X-ray diffraction analytical method.
Claim 8
Dependent Claim
42 words
A light-sensitive silver halide multi-layer color photographic material according to claim 1, wherein said mono-dispersed silver halide grains constitute at least 50% by weight of the total silver halide grains contained in the light-sensitive silver halide emulsion layer farthest from the support.
Claim 9
Dependent Claim
42 words
A light-sensitive silver halide multi-layer color photographic material according to claim 7, wherein said mono-dispersed silver halide grains constitute at least 75% by weight of the total silver halide grains contained in the light-sensitive silver halide emulsion layer farthest from the support.
Claim 10
Dependent Claim
24 words
A light-sensitive silver halide multi-layer color photographic material according to claim 1, wherein said cyan coupler is a compound represented by the formula: ##STR6##
Claim 11
Dependent Claim
24 words
A light-sensitive silver halide multi-layer color photographic material according to claim 1, wherein said cyan coupler is a compound represented by the formula: ##STR7##
Claim 12
Dependent Claim
24 words
A light-sensitive silver halide multi-layer color photographic material according to claim 1, wherein said cyan coupler is a compound represented by the formula: ##STR8##
Claim 13
Dependent Claim
31 words
A light-sensitive silver halide multi-layer color photographic material according to claim 1, wherein said mono-dispersed silver halide grains are grains of silver chlorobromide containing 25 mole or more of silver bromide.
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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) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |