Multiformat film clamp

Details Multiformat film clamp Multiformat film clamp

1992-06-30

1993-11-02

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Detailed holder for original

352223, G03B 2762, G03B 2764

Patent

active

052588076

ABSTRACT:
Clamping of different format sizes of film is achieved by aperatured inserts of the required size being insertable in a base member and a platen. The base member is provided with a relatively flat surface and an aperature therein over which a film strip is positioned. The platen is provided with an aperture therethrough and a gripping strips positioned around the periphery of the aperature with the gripping strips being angled away from the aperture. A clamping of the platen to the base member, with said apertures in alignment, provides a tension in the film along all sides of the aperture as the gripping strips are urged outward from the aperture. A two degree of freedom gimbal is formed in the platen to insures that the gripping strips clamp parallel to the aperture plate. Also the design will apply an equal and even clamping force and tension around the film because the two degrees of fredom of rotations are about the center of the clamping plate inserts. The gimbal clamp also reduces the need for accurate set up of clamping plate relative to the aperture plate insert.

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