Enhanced bleaching of photographic elements containing silver ha

Details Enhanced bleaching of photographic elements containing silver ha Enhanced bleaching of photographic elements containing silver ha

1985-03-28

1985-11-12

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Using identified radiation sensitive composition in the...

430430, 430461, 430543, 430564, G03C 700, G03C 544, G03C 542

Patent

active

045528349

ABSTRACT:
The bleaching from photographic elements of silver produced by the development of silver halide having a dye adsorbed to its surface by employing as a bleaching agent a ferric complex of a polycarboxylic acid is improved by the presence of a compound of the formula: ##STR1## wherein Ar is an aromatic linking group,

REFERENCES:
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patent: 3671255 (1972-06-01), Haga
patent: 3748136 (1973-07-01), Willems
patent: 3770437 (1973-11-01), Brugger et al.
patent: 3827886 (1974-08-01), Ishihra et al.
patent: 3870520 (1975-03-01), Shimamura et al.
patent: 4013470 (1977-03-01), Landon
patent: 4186008 (1980-01-01), Schar et al.
patent: 4242442 (1980-12-01), Idota et al.
patent: 4268618 (1981-05-01), Hashimura
Research Disclosure, vol. 228, Apr. 1983, Item 22843, "Retouching Bleaches for Photographic Prints Prepared by the Dye Transfer Process".
Research Disclosure, vol. 225, Jan. 1983, Item 22543, "Sensitized High Aspect Ratio Silver Halide Emulsions and Photographic Elements".

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