Photographic developing process

Details Photographic developing process Photographic developing process

1977-12-01

1979-02-27

Kelley, Mary F.

Gas separation: apparatus

Electric field separation apparatus

With means for vapor or liquid contact

96 61M, 96 664, G03C 700, G03C 538, G03C 530

Patent

active

041417348

ABSTRACT:
A process for developing photographic silver halide material, which has been exposed image-wise is provided. The aqueous developer preparation used contains a developer compound for the silver halide, a water-soluble solvent for the silver halide and an aliphatic, cycloaliphatic, aromatic or heterocyclic di- or trisulphide. These preparations remain clear over a long period of time during which they do not lose their effectiveness by becoming turbid or by sedimentation of silver. They are of special advantage in continuously operated photographic developing processes.

REFERENCES:
patent: 2935404 (1960-05-01), Dersch
patent: 3419392 (1968-12-01), Thompson
patent: 3447925 (1969-06-01), Dersch

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