Silver halide color photographic material

Details Silver halide color photographic material Silver halide color photographic material

1995-09-22

1996-08-20

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430387, G03C 738

Patent

active

055478263

ABSTRACT:
A silver halide photographic material comprising a support having provided thereon at least one layer containing a coupler represented by formula (I) ##STR1## wherein Za represents --C(R.sub.3).dbd. or --N.dbd., provided that when Za represents --N.dbd., Zb represents --C(R.sub.3).dbd. and when Za represents --C(R.sub.3).dbd., Zb represents --N.dbd.; R.sub.1 and R.sub.2 each represents an electron withdrawing group having a Hammett's substituent constant, .sigma..sub.p, of from 0.20 to 1.0; R.sub.3 represents a substituent; R.sub.4 and R.sub.5 are the same or different, and each represents a hydrogen atom, an aliphatic group, an aryl group or a heterocyclic group; and R.sub.4 and R.sub.5 may combine with each other to form a 5-membered ring or a 6-membered ring and the 5-membered ring or the 6-membered ring may form a condensed ring with a benzene ring or a heterocyclic ring.

REFERENCES:
patent: 4910127 (1990-03-01), Sakaki et al.
patent: 5256526 (1993-10-01), Suzuki et al.
patent: 5270153 (1993-12-01), Suzuki et al.
patent: 5348847 (1994-09-01), Suzuki et al.
patent: 5366856 (1994-11-01), Shimada et al.
patent: 5384236 (1995-01-01), Matsuoka et al.

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