Photographic material and process comprising a bicyclic pyrazolo

Details Photographic material and process comprising a bicyclic pyrazolo Photographic material and process comprising a bicyclic pyrazolo

1994-12-08

1997-09-16

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

G03C 738

Patent

active

056679521

ABSTRACT:
Novel bicyclic pyrazolo couplers containing a ballast group of formula (I): ##STR1## are useful in photographic materials and processes. The couplers exhibit increased coupling activity, and provide formation of dyes having improved maximum magenta image dye density, contrast, and development speed when employed in color photographic materials and processes.

REFERENCES:
patent: 4665015 (1987-05-01), Iijima
patent: 4822730 (1989-04-01), Furutachi et al.
patent: 4865963 (1989-09-01), Furutochi et al.
patent: 4882266 (1989-11-01), Kawagishi et al.

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