Photographic elements with heterocyclic cyan dye-forming coupler

Details Photographic elements with heterocyclic cyan dye-forming coupler Photographic elements with heterocyclic cyan dye-forming coupler

1994-07-28

1995-08-15

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430384, 430385, G03C 738

Patent

active

054418631

ABSTRACT:
Novel imidazo[3,2-a]imidazole cyan dye-forming couplers and photographic elements containing them are described. The couplers are represented by the following structure: ##STR1## wherein: EWG.sub.1 and EWG.sub.2 each independently represent an electron withdrawing group;

REFERENCES:
patent: 4728598 (1988-03-01), Bailey et al.
patent: 4873183 (1989-10-01), Tachibana et al.
patent: 4910127 (1990-03-01), Sakaki et al.
patent: 4916051 (1990-04-01), Tachibana et al.
patent: 5206130 (1993-04-01), Shimada et al.
patent: 5215871 (1993-06-01), Sato et al.

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