Color photographic materials including magenta coupler, inhibito

Details Color photographic materials including magenta coupler, inhibito Color photographic materials including magenta coupler, inhibito

1991-08-29

1993-10-05

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430546, 430555, 430377, 430387, G03C 108, G03C 726, G03C 732

Patent

active

052504050

ABSTRACT:
Color photographic materials comprise a support bearing a silver halide emulsion and a coupler composition. The coupler composition comprises a two-equivalent pyrazolone magenta dye-forming coupler, a ballasted carbonamide compound, and a developer inhibitor-releasing coupler. The carbonamide compound reduces continued coupling of the pyrazolone magenta dye-forming coupler during the bleach step in a color photographic process without altering the advantageous properties provided by the combination of the two-equivalent pyrazolone magenta dye-forming coupler and the developer inhibitor-releasing coupler.

REFERENCES:
patent: 4171975 (1979-10-01), Kato
patent: 4483918 (1984-07-01), Sakai et al.
patent: 4585728 (1986-06-01), Furutachi et al.
patent: 4857449 (1989-01-01), Ogawa et al.
patent: 4894318 (1990-01-01), Arakawa
patent: 5051346 (1991-09-01), Fujiwhara
patent: 5071735 (1991-10-01), Ichijima

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