Aperture card camera with device for spraying the exposed film

Details Aperture card camera with device for spraying the exposed film Aperture card camera with device for spraying the exposed film

1976-06-28

1978-10-17

Hix, L. T.

Pumps

With condition responsive pumped fluid control

Plural paths having individual condition responsive control...

354317, 354325, 417395, G03D 306

Patent

active

041212363

ABSTRACT:
An aperture card camera is provided with a spraying device for supplying to the exposed film a liquid such as a developer or the like. The liquid is sucked from an open supply container which is under atmospheric pressure. The liquid is then delivered to the developing chamber by a double action membrane pump. The membrane pump may comprise membranes which function as pump membranes and as valve membranes.

REFERENCES:
patent: 2619907 (1952-12-01), Paterson
patent: 2635545 (1953-04-01), Wood
patent: 2922352 (1960-01-01), Tuttle
patent: 2981170 (1961-04-01), Brault
patent: 3027821 (1962-04-01), Wright
patent: 3143943 (1964-08-01), Townley et al.
patent: 3149550 (1964-09-01), Lohse et al.
patent: 3194170 (1965-07-01), Ulbing

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