US5077188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic light-sensitive material
Assignee: Konica Minolta Inc
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Filing: 1990-02-01
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Granted: 1991-12-31
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Expires: 2010-02-01
Abstract
Abstract A silver halide photographic light-sensitive material is disclosed, which is improved in stability of cyan dye image formed therein. The light-sensitive material comprises a support having thereon a silver halide emulsion layer containing oleophilic dispersed particles. The particles comprises a cyan coupler represented by the following Formula I, an organic solvent selected from phthalic esters having a dielectrical constant of not more than 6.0 and a polymer compounds which is insoluble in water and soluble in a organic solvent: ##STR1## wherein R 1 is a ballast group, R 2 is an alkyl group having 2 or more carbon atoms and Z 1 is a hydrogen atom or a substituent capable of splitting off upon reaction with the oxidation product of a color developing agent.
Inventors
- 👤 Masaki Tanji
- 👤 Toyoki Nishijima
- 👤 Hirokazu Sato
- 👤 Tomomi Yoshizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:27
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/34; G03C7/346; G03C7/388
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
141 words
A silver halide photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing oleophilic dispersed particles comprising a cyan coupler represented by the following Formula I, a high-boiling organic solvent represented by the following Formula S, and a polymer compound being insoluble in water and soluble in an organic solvent: ##STR107## wherein R 1 is a ballast group, R 2 is an alkyl group having 2 or more carbon atoms and Z 1 is a hydrogen atom or a substituent capable of splitting off upon reaction with the oxidation product of a color developing agent; ##STR108## wherein R 11 and R 12 are each an alkyl group, an alkenyl group or an aryl group provided that the total number of carbon atoms contained in said groups represented by R 11 and R 12 is 12 to 32.
Claim 2
Dependent Claim
141 words
A silver halide photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing oleophilic dispersed particles comprising a cyan coupler represented by the following Formula I, a high-boiling organic solvent represented by the following Formula S, and a polymer compound being insoluble in water and soluble in an organic solvent: ##STR107## wherein R 1 is a ballast group, R 2 is an alkyl group having 2 or more carbon atoms and Z 1 is a hydrogen atom or a substituent capable of splitting off upon reaction with the oxidation product of a color developing agent; ##STR108## wherein R 11 and R 12 are each an alkyl group, an alkenyl group or an aryl group provided that the total number of carbon atoms contained in said groups represented by R 11 and R 12 is 12 to 32.
Claim 3
Dependent Claim
30 words
The material of claim 1, wherein said alkyl group represented by R 2 is an alkyl group having 2 to 6 carbon atoms, which is allowed to have a substituent.
Claim 4
Dependent Claim
45 words
The material of claim 1, wherein said ballast group is a group represented by the following Formula I-B: ##STR109## wherein R B1 is an alkyl group having 1 to 12 carbon atoms and Ar is an aryl group which is allowed to have a substituent.
Claim 5
Dependent Claim
110 words
The material of claim 1, said oleophilic particles further contain a cyan coupler represented by the following Formula II: ##STR110## wherein R 1 is an alkyl group or an aryl group, R 2 is an alkyl group, a cycloalkyl group, an aryl group or a heterocyclic group, R 3 is a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group, provided that the group represented by R 3 is allowed to form a ring together with the group represented by R 1 , Z 1 is a hydrogen atom or a substituent capable of splitting off upon reaction with the oxidation product of a color developing agent.
Claim 6
Dependent Claim
30 words
The material of claim 4, wherein said alkyl group represented by R 1 is an alkyl group having 1 to 32 carbon atoms which is allowed to have a substituent.
Claim 7
Dependent Claim
24 words
The material of claim 4, wherein said aryl group represented by R 1 is a phenyl group which is allowed to have a substituent.
Claim 8
Dependent Claim
81 words
The material of claim 4, wherein said cyan coupler represented by Formula II is a coupler represented by the following Formula II-A: ##STR111## wherein R A1 is a phenyl group having at least one halogen atom, which is allowed to have further substituent other than the halogen atom, R A2 is the same as R 1 defined in Formula II, and X A is a halogen atom, an aryloxy group or an alkoxy group, which is allowed to have a substituent.
Claim 9
Dependent Claim
21 words
The material of claim 1, wherein said organic solvent has a dielectric point within the range of from 1.9 to 5.0.
Claim 10
Dependent Claim
16 words
The material of claim 1, wherein said total number of carbon atoms is 18 to 24.
Claim 11
Dependent Claim
19 words
The material of claim 1, wherein said polymer compound has a number-average molecular weight of not more than 200,000.
Claim 12
Dependent Claim
19 words
The material of claim 10, wherein said polymer compound has a number-average molecular weight of from 5,000 to 100,000.
Claim 13
Dependent Claim
19 words
The material of claim 1, wherein, said polymer compound is a homo-polymer or a co-polymer comprising a vinyl monomer.
Claim 14
Dependent Claim
24 words
The material of claim 1, wherein said polymer compound is a polyester resin produced by condensation of a polyhydric alcohol and a polybasic acid.
Claim 15
Dependent Claim
17 words
The material of claim 1, wherein said polymer compound is a polyester resin produced by ring-opening polymerization.
Claim 16
Dependent Claim
22 words
The material of claim 1, wherein ratio by weight of said polymer compound to said coupler is within the range of from
Claim 17
Dependent Claim
25 words
The material of claim 15, wherein ratio by weight of said polymer compound to said coupler is within the range of from 1:10 to 10:1.
Claim 18
Dependent Claim
23 words
The material of claim 1, wherein said silver emulsion layer comprises silver halide grains comprising not less than 90 mol% of silver chloride.
Claim 19
Dependent Claim
24 words
The material of claim 17, wherein said silver halide grains comprises silver chlorobromide having a silver bromide content of from 0.1 to 2 mol%.
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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) | 1994-12-30 | 1995-07-01 | 1995-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-30 | 1999-07-01 | 1999-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-30 | 2003-07-01 | 2003-12-31 | $7700.00 | Window Closed / Lapsed |