Radiation imagery chemistry: process – composition – or product th – Color imaging process – Using identified radiation sensitive composition in the...
Patent
1991-11-29
1993-10-26
Wright, Lee C.
Radiation imagery chemistry: process, composition, or product th
Color imaging process
Using identified radiation sensitive composition in the...
430385, 430558, G03C 738
Patent
active
052565262
ABSTRACT:
A silver halide color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer containing at least one 1H-pyrrolo[1,2-b][1,2,4]triazole cyan coupler represented by the following general formula (I) or (II): ##STR1## wherein R.sub.1 and R.sub.2 each represents an electron withdrawing group having a Hammett's substituent constant .sigma.p value of 0.20 or more; R.sub.1 and R.sub.2 may be bonded to form a ring; the sum of a Hammett's substituent constant .sigma.p value of R.sub.1 and R.sub.2 is 0.65 or more; R.sub.3 represents a hydrogen atom or a substituent; and X represents a hydrogen atom or a substituent capable of being released upon coupling with an oxidation product of an aromatic primary amine color developing agent; said coupler may be in a form of a bis-compound or a polymer formed at R.sub.1, R.sub.2, R.sub.3 or X; and a cyan image forming method comprising imagewise exposing a silver halide color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer and subjecting the exposed photographic material to color development with an aromatic primary amine color dveloping agent at the presence of the above-described 1H-pyrrolo[1,2-b][1,2,4]triazole cyan coupler.
REFERENCES:
patent: 4910127 (1990-03-01), Sakaki et al.
patent: 5091297 (1992-02-01), Fukunaga et al.
Patent Abstracts of Japan, vol. 12, No. 166 (P-704) [3013], May 19, 1988.
Ishii Yoshio
Naruse Hideaki
Sato Kozo
Sato Tadahisa
Shimada Yasuhiro
Fuji Photo Film Co. , Ltd.
Wright Lee C.
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