Film clamp

Details Film clamp Film clamp

1990-10-22

1991-07-02

Hix, L. T.

Photocopying

Projection printing and copying cameras

Detailed holder for photosensitive paper

355 76, G03B 2762, G03B 2764

Patent

active

050289560

ABSTRACT:
A film clamp is disclosed which comprises a platen having an aperture in a flat working surface of the platen. A proximal gripping member is positioned to grip one edge of a film supported on the platen, and a distal gripping member is positioned to grip an opposite edge of the film. A bell crank is adapted to press the proximal gripping member into contact with a film on the platen and to press the distal gripping member into contact with the film and away from the proximal gripping member to place the clamped film in tension across the aperture. In order to provide a means for advancing the film relative to the aperture in the platen, a motor-driven endless belt is mounted on the platen adjacent the proximal gripping member, and the proximal gripping member bears against the belt to grip the film.

REFERENCES:
patent: 2824491 (1958-02-01), Hoffmaster
patent: 4483612 (1984-11-01), Binder
patent: 4761675 (1988-08-01), Sawasaki
patent: 4955632 (1990-10-01), Jadrich et al.

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