Sulfo-substituted carboxylates as buffers for photographic bleac

Details Sulfo-substituted carboxylates as buffers for photographic bleac Sulfo-substituted carboxylates as buffers for photographic bleac

1997-05-14

1998-07-21

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

Fixer

430393, 430430, 430461, G03C 742

Patent

active

057833761

ABSTRACT:
A composition for bleaching or bleach-fixing a silver halide photographic material has a pH of from 2 to 9. The composition comprises a bleaching agent which is either a persulfate or polyvalent metal complex of an aminopolycarboxylic acid, and from 0.01 to 2M of a sulfo-substituted carboxylate represented by Formula I

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patent: 5061608 (1991-10-01), Foster et al.
patent: 5316898 (1994-05-01), Ueda et al.
patent: 5460924 (1995-10-01), Buchanan et al.
patent: 5536625 (1996-07-01), Buchanan et al.
Application Serial No. 07/990,500.
Application Serial No. 08/230,198.
Application Serial No. 8/407,343.

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