Stabilized bleach-fixing baths

Details Stabilized bleach-fixing baths Stabilized bleach-fixing baths

1973-08-16

1977-07-05

Kelley, Mary F.

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

G03C 532

Patent

active

040337715

ABSTRACT:
A bleach-fix composition for use in photographic processing comprising a polycarboxylic acid bleaching agent, a thiosulfate fixing agent, and a carbonyl bisulfite adduct. The carbonyl bisulfite adduct functions as a stabilizing agent which retards sulfurization of the bleach-fix composition and thereby prolongs its useful life.

REFERENCES:
patent: 3304179 (1967-02-01), Field et al.
patent: 3615513 (1971-10-01), Haisl et al.
patent: 3617283 (1971-11-01), Ohi et al.
patent: 3667950 (1972-06-01), Amano et al.
patent: 3667952 (1972-06-01), Fassbender
patent: 3706561 (1972-12-01), Mowrey et al.
patent: 3767401 (1973-10-01), Newman et al.
patent: 3879202 (1975-04-01), Yamaguchi et al.

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