Film holder for a copy camera

Details Film holder for a copy camera Film holder for a copy camera

1978-12-14

1980-04-08

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Detailed holder for photosensitive paper

248363, 355 76, G03B 2760, A45D 4214, F16B 4700

Patent

active

041970055

ABSTRACT:
The conventional rear ground glass and vacuum back of a copy camera is replaced by an optically transparent platen and a flexible vacuum curtain. The vacuum curtain acts both as a copy viewing screen and as a photographic film or paper retainer. A vacuum channel with vacuum passageways is defined around the perimeter of the optically transparent platen to exhaust the air between the vacuum curtain and the transparent platen to thereby retain the light sensitive material to be exposed therebetween. The vacuum curtain is mounted on a roller that engages the transparent platen as the curtain is unrolled and rerolled over the sheet of photographic material.

REFERENCES:
patent: 1945481 (1934-01-01), Dilkes
patent: 2895706 (1959-07-01), Blatherwick
patent: 3028786 (1962-04-01), Wanielista et al.
patent: 3068748 (1962-12-01), Schutt et al.
patent: 3107078 (1963-10-01), Schutt
patent: 3433567 (1969-03-01), MacPhee et al.
patent: 3734615 (1973-05-01), Wally, Jr.
patent: 3759613 (1973-09-01), Denis
patent: 3762816 (1973-10-01), Wally, Jr.
patent: 4043663 (1977-08-01), Lein
patent: 4089603 (1978-05-01), Jacobs

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