Process for bleach-fixing chromogenically color photographic sil

Details Process for bleach-fixing chromogenically color photographic sil Process for bleach-fixing chromogenically color photographic sil

1973-03-12

1976-03-09

Klein, David

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96 22, 96 55, 96 61R, G03C 532, G03C 716, G03C 700, G03C 538

Patent

active

039429849

ABSTRACT:
Color film of the silver halide emulsion type is developed by a process which includes a bleach-fixing bath treatment to remove the silver image, followed by an oxidizing bath to restore to the dyes the color which they lost in the bleach-fixing bath. This oxidizing bath must contain an iron-III-complex of an amino polyacetic acid as the oxidizing agent, e.g. the sodium-salt of the iron-III-complex of ethylene diamine tetra-acetic acid.

REFERENCES:
patent: 3189452 (1965-06-01), Bard et al.
patent: 3634088 (1972-01-01), Cooley
patent: 3700450 (1972-10-01), Cooley

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