Apparatus for developing diazo type film

Details Apparatus for developing diazo type film Apparatus for developing diazo type film

1974-01-22

1976-10-12

Braun, Fred L.

354300, 354324, G03D 1300

Patent

active

039861910

ABSTRACT:
In a diazo developer apparatus which includes a chamber, slightly larger than the film to be developed, having continuously circulating ammonia gas uniformly distributed in the film area, ammonia gas entry and exit ports, a temperature control device for the chamber, and elements in the chamber for preventing the film being processed from closing the exit port. The gas is derived from a container holding a predetermined amount of liquid ammonium hydroxide through which the gas exiting from the chamber is bubbled. The gas is derived from the container above the liquid level and fed directly to the chamber.

REFERENCES:
patent: 3081687 (1963-03-01), Takats
patent: 3149550 (1964-09-01), Lohse et al.
patent: 3364833 (1968-01-01), Mulvany
patent: 3440944 (1969-04-01), Endermann et al.
patent: 3524397 (1970-08-01), Hruby
patent: 3535997 (1970-10-01), Blake

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