Electroplating from a thiosulfate-containing medium without sulf

Details Electroplating from a thiosulfate-containing medium without sulf Electroplating from a thiosulfate-containing medium without sulf

1979-09-04

1981-05-19

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

Regenerating image processing composition

204 46R, 204109, 204149, G03C 538, C25C 120

Patent

active

042686199

ABSTRACT:
The useful life and stability of fixer used in the processing of film through developer, fixer and wash stages is significantly improved by withdrawing used fixer, electrolytically removing silver therefrom, stabilizing the withdrawn fixer by adjusting its pH to a substantially constant value and recirculating thus-treated used fixer for further film processing.

REFERENCES:
patent: 4018658 (1977-04-01), Alfin
patent: 4111766 (1978-09-01), Idota
patent: 4166781 (1979-09-01), Staples
Mason, "Photographic Processing Chemistry," 1975, pp. 192-195.
Photo Lab Index, Quarterly Supp. No. 125, pp. 3-232-237, 1971.

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