G - Physics – 03 – C
Patent
G - Physics
03
C
96/58
G03C 5/30 (2006.01) G03C 5/305 (2006.01)
Patent
CA 1152800
8-11657/TEL 186/+ Process for the prevention of darkening and the formation of a sediment in photographic developer solutions Abstract of the Disclosure A process is described for the prevention of darkening and the formation of a sediment in photographic developer solutions which contain a silver halide developer, a water-soluble silver halide solvent and organic sulfur compounds. The organic sulfur compounds are a combination of (a) an organic thiol compound or thione compound capable of tautomerism and (b) a Bunte salt which contains groups conferring solubility in water. Developer solutions which contain the indicated combination of sulfur compounds are out- standingly stable.
324106
Kramp Ekkehard
Lenoir John
Marthaler Max
Ag Ciba-Geigy
Gowling Lafleur Henderson Llp
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