Cyan dye recovery using ferric aminopolycarboxylic acid bleachin

Details Cyan dye recovery using ferric aminopolycarboxylic acid bleachin Cyan dye recovery using ferric aminopolycarboxylic acid bleachin

1999-03-02

2000-08-01

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Bleaching

430393, G03C 742

Patent

active

060964871

ABSTRACT:
Cyan dye density can be maximized in color developed silver halide photographic color materials and bleaching accelerated by contacting the materials with a bleaching or bleach-fixing composition comprising a mixture of a ferric complex of an aminopolycarboxylic acid as a bleaching agent, and an aromatic pyridinyl mono- or dicarboxylic acid in uncomplexed form. The molar ratio of the uncomplexed aromatic carboxylic acid to the ferric ion in the bleaching composition is from about 0.02:1 to about 0.8:1.

REFERENCES:
patent: 5460924 (1995-10-01), Buchanan et al.
patent: 5521056 (1996-05-01), Buchanan et al.
patent: 5582958 (1996-12-01), Buchanan et al.
patent: 5627015 (1997-05-01), Okada et al.
patent: 5670305 (1997-09-01), Gordon et al.
patent: 5691120 (1997-11-01), Wilson et al.
Japanese Abstract JP09120129, May 6, 1997.
J. Chem. Soc. Dalton Trans. 1986, p. 619. Lannon et al Redox Reactions of Some Iron(11), Iron (111), and Cobalt(111) Picolinate Complexes.
Research Disclosure 15704 Use of Persulfate Bleaching Agents in Photograp Processing.
Research Disclosure 37141 of Mar. 1995 Photographic Bleaching Composition and Processing Method Using Ternary Iron Carboxylate Complexes.

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