Sheet film cassette for photographic cameras

Details Sheet film cassette for photographic cameras Sheet film cassette for photographic cameras

1989-08-30

1990-08-14

Gellner, Michael L.

354283, 354276, G03B 1726

Patent

active

049491121

ABSTRACT:
A sheet film cassette is provided with a flat housing 10 having a picture defining gate 14 on the front and a swingable rear wall 11 on the rear of the cassette. When the rear wall 11 is open, the cassette can be loaded from its rear. The rear wall 11 has a pressure device 20-22 located on its inner side to elastically force a sheet film loaded onto the cassette against supporting shoulders 18 located along the periphery of the picture defining gate 14 and lying in a common plane. The pressure device 20-22 has a flat pressure plate 20 and a bridge-like leader element 22 arranged between the pressure plate 20 and the rear wall 11. The leader element 22 has pairs of opposing support runners 23 that extend over the opposing peripheral edge of the pressure plate 20 and have stop faces 26 for interacting with the outermost peripheral edges of the loaded sheet film F. When the rear wall 11 is closed, the mechanical stress that holds the film snugly to the pressure plate 20 is imparted to the loaded sheet film F by means of the stop faces 26 of the support runners 23. This guarantees that the part of the sheet film F to be exposed will be completely flat.

REFERENCES:
patent: 4493545 (1985-01-01), Bauer et al.

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