Method for processing silver dye bleach materials

Details Method for processing silver dye bleach materials Method for processing silver dye bleach materials

1974-10-01

1976-06-15

Brown, J. Travis

Gas separation: apparatus

Electric field separation apparatus

With means for vapor or liquid contact

96 20, G03C 700

Patent

active

039634922

ABSTRACT:
The present invention relates to a simplified method for processing silver dye bleach material by (1) silver developing, (2) dye and silver bleaching (3) silver fixing and (4) soaking. The sequence (1), (2), (3), (4) is followed and the bleaching bath (2) contains (a) a strong acid, (b) a water-soluble iodide, (c) a water-soluble oxidizing agent (d) an antioxidant and (e) a dye bleach catalyst.

REFERENCES:
patent: 2322084 (1943-06-01), Young et al.
patent: 3620744 (1971-11-01), Schellenberg et al.
patent: 3796576 (1974-03-01), Schlunke et al.
patent: 3868253 (1975-02-01), Marthaler et al.

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