Bleaching bath

Details Bleaching bath Bleaching bath

1992-10-30

1993-11-30

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

Bleach or intensification

430393, 430430, 430461, G03C 728

Patent

active

052664490

ABSTRACT:
A bleaching bath for processing of a color photographic silver halide material which contains the ferric complex of alaninediacetic acid as the bleaching agent and in a dye-stabilizing amount a formaldehyde precursor of the formula ##STR1## wherein X and Y denote the residual atoms of a hetero aromatic 5- or 6-membered ring,
yields color photographic images with excellent dye-stabilizing. In the atmosphere above the stabilizing bath no formaldehyde is detectable.

REFERENCES:
patent: 3241966 (1966-03-01), Heilmann et al.
patent: 3615508 (1971-10-01), Stephen et al.
patent: 4599427 (1986-07-01), Oeckl et al.
patent: 4914008 (1990-04-01), Kurematsu et al.
patent: 4960682 (1990-10-01), Cullinan et al.

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