Radiation imagery chemistry: process – composition – or product th – Color imaging process – Using identified radiation sensitive composition in the...
Patent
1993-04-15
1995-07-18
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Color imaging process
Using identified radiation sensitive composition in the...
430385, 430467, 430470, 430558, 430376, 430399, G03C 746
Patent
active
054340349
ABSTRACT:
There is disclosed a silver halide color photographic material and a method for forming a color image using said color photographic material. The silver halide color photographic material comprises silver halide emulsion grains comprising silver chlorobromide having a high silver chloride content and being substantially free from silver iodide, and a cyan dye-forming coupler represented by formula (I) or (II), and said silver halide emulsion grains being formed by adding a water-soluble bromide at the grain formation step, and/or during the period from the completion of the formation of the grains to the coating of the cyan dye-forming layer onto the support: ##STR1## wherein Za and Zb each represent --N.dbd. or --C(R.sub.3).dbd., with one of Za and Zb being --N.dbd. and the other being --C(R.sub.3).dbd.; R.sub.1 and R.sub.2 each represent an electron-attracting group, whose Hammett substituent constant .sigma..sub.p value is 0.20 or more, with the sum of the .sigma..sub.p values of R.sub.1 and R.sub.2 being 0.65 or more; R.sub.3 represents a hydrogen atom or a substituent; X represents a hydrogen atom or a releasing-off group and R.sub.1, R.sub.2, R.sub.3, or X may become a bivalent group to form a dimer or a higher polymer, or may bond to a polymer molecular chain to form a homopolymer or a copolymer.
REFERENCES:
patent: 4791053 (1988-12-01), Ogawa
patent: 4830958 (1989-05-01), Okumura et al.
patent: 4910127 (1990-03-01), Sakaki et al.
Bowers Jr. Charles L.
Fuji Photo Film Co. , Ltd.
Letscher Geraldine
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