High speed, low temperature diazo processor

Details High speed, low temperature diazo processor High speed, low temperature diazo processor

G - Physics

03

D

95/87

G03D 7/00 (2006.01)

Patent

CA 1126075

Abstract of the Disclosure A processor for developing diazo film has flat platens disposed within a housing and spaced apart a distance to accommodate the thickness of the film. The housing includes an inlet and an outlet aligned with the space between the platens and means for ad- vancing a film from the inlet and through the space between the platens in a preheat chamber and in a de- veloping chamber and for discharging the developed film. The platen facing the emulsion side of the film is heated in the preheat chamber so that the film is heated to a desired temperature prior to developing. A metered amount of aqueous ammonia is supplied through a lower chamber at the inlet end of the developing cham- ber wherein the ammonia is separated from the water by reason of the differential temperature and ammonia vapor rises to contact the emulsion side of the film for rapidly developing thereof and the water is drained from the lower chamber.

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