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US4489155A Expired / Lapsed US ⏱️ 0.0 years remaining

Silver halide color photographic materials with diffusible dye for improving graininess

Assignee: Fujifilm Holdings Corp
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Filing: 1983-07-05
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Granted: 1984-12-18
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Expires: 2003-07-05
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Abstract

Abstract In a silver halide color photographic material is disclosed. The material is comprised of a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, and a red-sensitive silver halide emulsion layer. The granularity of the material is improved by incorporating a non-diffusible coupler capable of forming a properly smearing diffusible dye by causing a reaction with the oxidation product of a color developing agent and a colorless competing compound capable of capturing the oxidation product of a color developing agent in at least one of the foregoing silver halide emulsion layers.

Inventors

  • 👤 Kei Sakanoue
  • 👤 Shigeo Hirano
  • 👤 Keiichi Adachi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 07:29
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3003; G03C1/00; G03C1/005; G03C1/06; G03C1/42; G03C1/76; G03C1/7614; G03C2200/00; G03C2200/19; G03C7/32

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 267 words
A silver halide color photographic material comprising a support having formed thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, and a red-sensitive silver halide emulsion layer, at least one of said emulsion layers containing a non-diffusible coupler which forms a properly smearing diffusible dye upon reaction with the oxidation product of a color developing agent together with a substantially colorless competing compound which captures the oxidation product of a color developing agent wherein the colorless competing compound is represented by the general formula (CI) ##STR19## wherein X is a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, or an --OZ group, wherein Z represents a hydrogen atom, an acyl group, and alkoxycarbonyl group, a carbamoyl group, a sulfonyl group, an alkyl group containing 1 to 20 carbon atoms, and an alkenyl group containing 2 to 22 carbon atoms or a methallyl group; R 21 , R 22 and R 23 independently represent a hydrogen atom, a halogen atom, a cyano group, --SO 2 R 24 , --COR 24 , a substituted or unsubstituted alkyl group containing 1 to 30 carbon atoms, a substituted or unsubstituted akenyl group containing 2 to 30 carbon atoms, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted alkylthio group, a substituted or unsubstituted aryl group; and wherein R 24 is a hydroxy group, a substituted or unsubstituted aryl group containing 1 to 30 carbon atoms, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, or a substituted or unsubstituted amino group.
Claim 2
Dependent Claim 267 words
A silver halide color photographic material comprising a support having formed thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, and a red-sensitive silver halide emulsion layer, at least one of said emulsion layers containing a non-diffusible coupler which forms a properly smearing diffusible dye upon reaction with the oxidation product of a color developing agent together with a substantially colorless competing compound which captures the oxidation product of a color developing agent wherein the colorless competing compound is represented by the general formula (CI) ##STR19## wherein X is a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, or an --OZ group, wherein Z represents a hydrogen atom, an acyl group, and alkoxycarbonyl group, a carbamoyl group, a sulfonyl group, an alkyl group containing 1 to 20 carbon atoms, and an alkenyl group containing 2 to 22 carbon atoms or a methallyl group; R 21 , R 22 and R 23 independently represent a hydrogen atom, a halogen atom, a cyano group, --SO 2 R 24 , --COR 24 , a substituted or unsubstituted alkyl group containing 1 to 30 carbon atoms, a substituted or unsubstituted akenyl group containing 2 to 30 carbon atoms, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted alkylthio group, a substituted or unsubstituted aryl group; and wherein R 24 is a hydroxy group, a substituted or unsubstituted aryl group containing 1 to 30 carbon atoms, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, or a substituted or unsubstituted amino group.
Claim 3
Dependent Claim 78 words
A silver halide color photographic material, as claimed in claim 1, wherein the non-diffusible coupler is represented by the general formula 1 ##STR20## wherein Cp is a diffusible coupler moiety; X is a group which is bonded to a coupling position of the coupler moiety and is released by reaction with the oxidation product of the color developing agent, said group being a moiety having a ballast group of 8-32 carbon atoms; and a is 1 or 2.
Claim 4
Dependent Claim 33 words
A silver halide color photographic material, as claimed in claim 2, wherein the non-diffusible coupler is present in an amount in the range of 0.005 mole to 0.2 mole per mole of silver.
Claim 5
Dependent Claim 33 words
A silver halide color photographic material as claimed in claim 3, wherein the non-diffusible coupler is present in an amount in the range of 0.01 mole to 0.05 mole per mole of silver.
Claim 6
Dependent Claim 34 words
A silver halide color photographic material as claimed in claim 3, wherein the colorless competing compound is present in an amount in the range of 1 mole% to 300 mole% of the non-diffusible coupler.
Claim 7
Dependent Claim 34 words
A silver halide color photographic material as claimed in claim 5, wherein the colorless competing compound is present in an amount in the range of 5 mole% to 100 mole% of the non-diffusible coupler.
Claim 8
Dependent Claim 140 words
A silver halide color photographic material as claimed in claim 5, wherein the non-diffusible coupler is represented by the following general formula (I) and (II) ##STR21## wherein R 1 , R 2 , R 3 and R 4 independently represent a hydrogen atom, a halogen atom, an alkyl group, and alkoxy group, aryloxy group, an acylamino group, a sulfonamino group, a carbamoyl group, a sulfamoyl group, an alkylthio group, an alkylsulfonyl group, an alkoxycarbonyl group, a ureido group, a cyano group, a carboxy group, a hydroxy group, or a sulfo group; wherein the total number of carbon atoms in R 1 -R 4 is 10 or less, and X' represents a group having a balance group containing 8 to 32 carbon atoms which can be released by coupling with the oxidation product of an aromatic primary amino color developing agent.
Claim 9
Dependent Claim 69 words
A silver halide color photographic material as claimed in claim 7, wherein the colorless competing compound is a compound represented by the general formula (C II) and (C III) ##STR22## wherein Z, R 21 and R 23 are the same as claimed in claim 1, and R 22 is an alkoxycarbonyl group, an N-substituted carbamoyl group, an acyl group, a sulfonyl group, a cyano group, or a halogen atom.
Claim 10
Dependent Claim 24 words
A silver halide color photographic material as claimed in claim 1, wherein Z is a hydrogen atom, and acyl group or an alkoxycarbonyl group.
Claim 11
Dependent Claim 29 words
A silver halide color photographic material as claimed in claim 9, wherein Z is a hydrogen atom and R 22 is a alkoxycarbonyl group or an N-substituted carbamoyl group.

References Cited (Backward Citations)

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US3408194A Cited
US3580722A Cited
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US3933501A Cited
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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) 1987-12-18 1988-06-18 1988-12-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-12-18 1992-06-18 1992-12-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-12-18 1996-06-18 1996-12-18 $7700.00 Window Closed / Lapsed

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