Process and apparatus for the peroxide bleaching of photographic

Details Process and apparatus for the peroxide bleaching of photographic Process and apparatus for the peroxide bleaching of photographic

1995-12-14

1996-11-26

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Regenerating image processing composition

430393, 430400, 430430, 430460, 430461, G03C 744

Patent

active

055784283

ABSTRACT:
A process for the bleaching of an exposed photographic material utilizes a peroxide bleach solution to remove metallic silver from the exposed photographic material. The silver from the photographic material passes into the bleach solution such that at least part of the excess silver over that required to catalyze the bleaching action is removed from the bleach solution by forming an insoluble silver compound, for example, by the addition of a halide. The invention provides an apparatus for use in the bleaching method.

REFERENCES:
patent: 3832453 (1974-08-01), Slovonsky et al.
patent: 4277556 (1981-07-01), Koboshi et al.
patent: 5342740 (1994-08-01), Goto et al.

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