Method of photographic processing and fixer compositions therefo

Details Method of photographic processing and fixer compositions therefo Method of photographic processing and fixer compositions therefo

1993-01-08

1994-01-04

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

Fixer

430458, 430459, G03C 538

Patent

active

052759237

ABSTRACT:
A method of reducing the environmental impact of ammonium thiosulfate photographic fixers without increasing fixing time is provided. In the method of the invention, up to 60% molar of the total ammonium thiosulfate is replaced by an alkali metal thiosulfate.

REFERENCES:
patent: 2735774 (1956-02-01), Henn
patent: 3854947 (1974-12-01), Ritchey
patent: 3994729 (1976-11-01), Shibaoka
patent: 4029510 (1977-06-01), Speers
patent: 4963474 (1990-10-01), Fujita et al.
Abstract of JP3054553 Jul. 1989.

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