Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1991-02-08
1992-04-14
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430556, 430558, 430543, G03C 108
Patent
active
051047837
ABSTRACT:
The present invention relates to a silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide color photograph material contains a coupler represented by the following general formula (I): ##STR1## wherein X and Y each represents a nitrogen atom or a methine group; n represents 1 or 2, when n is 2, two X's and two Y's may be the same or different; Z represents a non-metallic atomic group necessary to form a heterocyclic ring or aromatic ring together with ##STR2## W represents a hydrogen atom or a group capable of being released upon a reaction with an oxidation product of a developing agent; and R.sub.1 and R.sub.2 each represents a substituent, and at least one of R.sub.1 and R.sub.2 represents an electron attractive sustituent.
The silver halide color photographic material containing the cyan dye forming coupler represented by the general formula (I) provides color images excellent in sharpness and preservability.
REFERENCES:
patent: 2473166 (1949-06-01), Merckx
patent: 4239894 (1980-12-01), Seybold
patent: 4371734 (1983-02-01), Seybold
Ichijima Seiji
Shimada Yasuhiro
Bowers Jr. Charles L.
Fuji Photo Film Co. , Ltd.
Neville Thomas R.
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