Concentrated photographic developing slurries

Details Concentrated photographic developing slurries Concentrated photographic developing slurries

G - Physics

03

C

G03C 5/30 (2006.01) G03C 5/26 (2006.01) G03C 5/305 (2006.01)

Patent

CA 2212709

Improved concentrated photographic developing slurries having new and desirable characteristics prepared with conventional photographic processing agents eliminate solidification of sedimentation crystals during shipping, storage or extreme temperatures and provide readily solubilized concentrates which upon dilution form working strength photographic developing solutions. The concentrated developing slurries prepared according to these methods are characterized by two phases including an opaque precipitation phase having with a sedimentation comprising inorganic antioxidant agents and a clear phase comprising developing agents dissolved therein.

Bouillies concentrées améliorées, pour le développement photographique, possédant des caractéristiques nouvelles et recherchées; elles sont préparées à l'aide d'agents de traitement photographique classiques et permettent d'éliminer la solidification des cristaux de sédimentation lors du transport ou du stockage, ou encore à des températures extrêmes; elles donnent des concentrés facilement solubilisés, qui par dilution forment des solutions de développement photographique prêtes à l'emploi. Les bouillies concentrées préparées selon ces méthodes sont caractérisées par deux phases, une phase de précipitation opaque de type sédimentation, renfermant des agents antioxydants minéraux, et une phase transparente renfermant des agents de développement à l'état dissous.

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