G - Physics – 03 – B
Patent
G - Physics
03
B
95/34
G03B 1/42 (2006.01)
Patent
CA 1075950
Abstract of the Disclosure A photographic film handling apparatus of the invention wherein photographic film is positioned at a structure defining an image aperture comprises a film pressure plate having a cluster of air holes for an escape of air from a space between the film pres- sure plate and adjacent photographic film, equipment for mounting the film pressure plate adjacent the aperture defining structure, and equipment coupled to the film pressure plate for actuating the film pressure plate relative to the aperture defining structure. A camera including such film handling apparatus and for photographing information on microfilm comprises the said structure defining an image aperture, a lens system for projecting an image of the information to be photographed along an optical path through the image aperture, the film pressure plate, equipment connected to the image aperture defining structure and to the clamping device for mounting and restraining the image aperture defining structure and the clamping device against lateral movement relative to the optical path, a carriage, equipment for moving the carriage rela- tive to the image aperture defining structure, lens system and clamping device, and equipment on the carriage for advancing micro- film between the image aperture defining structure and the clamp- ing device.
314434
Butts William O.
Jamieson John
Price Henry F.
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