Photocopying – Projection printing and copying cameras – With developing
Patent
1979-11-23
1981-07-21
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
With developing
355107, G03B 2732, G03B 2752
Patent
active
042794919
ABSTRACT:
An apparatus for exposing and developing film units which have pairs of overlapping positive and negative sheets and must be subjected to a diffusion treatment subsequent to treatment with a liquid developing agent has an exposing unit above a light duct which is disposed above a compartment for cassettes containing stacks of superimposed film units. The compartment is located above a diffusion chamber and is adjacent to a relatively small casing for a developing unit containing a liquid developing agent and provided with pairs of advancing rolls for the transport of freshly exposed film units from the cassette in the compartment, through the casing and the developing agent therein, and thereupon into the diffusion chamber. The developing unit has a device which temporarily separates the sheets of a film unit during transport through the developing agent. The dimensions of the apparatus are sufficiently small to warrant its use in private homes by amateur photographers in order to make enlarged prints of color photographic negatives.
REFERENCES:
patent: 2315452 (1943-03-01), Pifer
patent: 3252396 (1966-05-01), Limberger et al.
patent: 3308717 (1967-03-01), Okishima et al.
patent: 4076412 (1978-02-01), Igarashi et al.
patent: 4082446 (1978-04-01), Driscoll et al.
Fergg Berthold
Osegowitsch Viktor
Stemme Otto
Viehrig Wolfgang
AGFA-Gevaert A.G.
Kontler Peter K.
Wintercorn Richard A.
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