Patent EP0090479A2 successfully refreshed from Google Patents.
EP0090479A2
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EP
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Color photographic light-sensitive material
Assignee: Konica Minolta Inc
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Filing: 1983-01-06
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Granted: —
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Expires: 2003-01-06
Abstract
Abstract Multi-layer silver halide color photographic light-sensitive material suitable for miniaturized photographic images because of the image sharpness and insensitivity to formaldehyde vapor has, furthest from the support, its green-sensitive emulsion layer, covered with a protective layer functioning also as a yellow filter layer, said green-sensitive emulsion layer comprising a magenta coupler having the formula (1), (II), (III), (IV) or (V): wherein R 1 and R 2 each represents alkyl, aryl, heterocyclic ring amino, acylamino, hydroxy, alkoxy, alkylthio, carboxy, or an esterified carboxy radical; R 3 represents a hydrogen atom or a coupling-off radical; Cp represents a blocking coupler radical which, after the reaction thereof with the oxidation product of a color developing agent, produces a colorless or alkali-soluble reaction product.
Inventors
- 👤 Takeo Koitabashi
- 👤 Toshifumi Iijima
- 👤 Kiyoshi Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 21:29
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30511; G03C7/30517; G03C7/30529; G03C7/32; G03C7/36; G03C7/38; G03C7/381; G03C7/382; G03C7/3825
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
167 words
A silver halide color photographic light-sensitive material comprising a support having thereon a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a yellow filter layer, a blue-sensitive silver halide emulsion layer and a protective layer, characterized in that said protective layer is an uppermost layer functioning also as a yellow filter layer, and said green-sensitive silver halide emulsion layer is positioned farthest from said support and substantially comprises a photographic coupler capable of forming a magenta dye image on reaction with the oxidation product of an aromatic primary amine color developing agent, said photographic coupler having the formula (I), (II), (III), (IV) or (V): wherein R 1 and R 2 each represents alkyl, aryl, heterocyclic ring, amino, acylamino, hydroxy, alkoxy, alkylthio, carboxy, or an esterified carboxy radical; R 3 represents a hydrogen atom or a coupling-off radical; Cp represents a blocking coupler radical which, after the reaction thereof with the oxidation product of a color developing agent, produces a colorless or alkali-soluble reaction product.
Claim 2
Dependent Claim
167 words
A silver halide color photographic light-sensitive material comprising a support having thereon a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a yellow filter layer, a blue-sensitive silver halide emulsion layer and a protective layer, characterized in that said protective layer is an uppermost layer functioning also as a yellow filter layer, and said green-sensitive silver halide emulsion layer is positioned farthest from said support and substantially comprises a photographic coupler capable of forming a magenta dye image on reaction with the oxidation product of an aromatic primary amine color developing agent, said photographic coupler having the formula (I), (II), (III), (IV) or (V): wherein R 1 and R 2 each represents alkyl, aryl, heterocyclic ring, amino, acylamino, hydroxy, alkoxy, alkylthio, carboxy, or an esterified carboxy radical; R 3 represents a hydrogen atom or a coupling-off radical; Cp represents a blocking coupler radical which, after the reaction thereof with the oxidation product of a color developing agent, produces a colorless or alkali-soluble reaction product.
Claim 3
Dependent Claim
73 words
A material according to Claim 1, characterized in that Cp is a radical having the Formula: wherein R 5 is an alkyl-O-CO-, alkyl-CO-, aryl-O-CO-, an aryl-CO-, -COOH, -N0 2 or -CN radical; and R 6 is a radical as defined for R 5 or is aryl-NHCO-, provided that at least one of R 5 and R 6 contains an alkyl or aryl radical substituted by at least one carboxy, sulfo or hydroxy radical.
Claim 4
Dependent Claim
37 words
A material according to Claim 1 or 2 characterized in that said protective layer has a filter density of not less than 50% of the whole yellow filter density of said silver halide color photographic light-sensitive material.
Claim 5
Dependent Claim
21 words
A material according to any preceding Claim, characterized in that said green-sensitive silver halide emulsion layer comprises regular silver halide particles.
Claim 6
Dependent Claim
31 words
A material according to any preceding Claim characterized in that Cp represents halogen or an alkoxy, aryloxy, heterocyclyloxy, sulfonyloxy, acyloxy, acyl, heterocyclyl, thiacyano, alkylthio, arylthio, heterocyclylthio, sulfonamideo, sulfonyloxy or aryl-azo radical.
Claim 7
Dependent Claim
52 words
A material according to Claim 5 characterized in that Cp represents a group having the formula: wherein X represents an oxygen or sulfur atom; R 6 represents an alkyl, heterocyclic or acyl radical; and Q represents the non-metallic atoms necessary to form, together with the nitrogen atom, a 5-member or 6-member ring.
Claim 8
Dependent Claim
32 words
A material according to any preceding Claim characterized in that the coupler is employed in an amount from 5x10 -4 to 8x10 -1 mole per mole of silver in the emulsion layer.
Claim 9
Dependent Claim
21 words
A material according to any preceding Claim characterized in that one or more DIR compounds are incorporated into the component layers.
References Cited (Backward Citations)
No citation records indexed.
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