Process for the treatment of photographic materials

Details Process for the treatment of photographic materials Process for the treatment of photographic materials

1977-05-02

1979-02-06

Kelley, Mary F.

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96 61R, G03C 538, G03C 532

Patent

active

041382579

ABSTRACT:
In the processing of developed imagewise exposed silver halide photographic material with a solution having fixing ability, the fixing efficiency is improved and environmental pollution prevented by employing a solution containing bromine ions or iodine ions as the fixing agent and incorporating in said solution or in a post-bath solution, a polymer having in its molecular structure pyrrolidone nucleus units and a molecular weight of about 2,000 to 500,000.

REFERENCES:
patent: T881006 (1970-12-01), Bard
patent: T910002 (1973-05-01), Holter
patent: 3238043 (1966-03-01), Levy
patent: 3607277 (1971-09-01), Schranz et al.
patent: 3770437 (1973-11-01), Brugger et al.
patent: 3880660 (1975-04-01), Ishihara et al.
patent: 4040837 (1977-08-01), Sakamoto et al.

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