Film transport driving and braking apparatus for a photographic

Patent

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Details

354203, 354212, G02B 124

Patent

active

040343880

ABSTRACT:
In a roll film camera combined with a long length film magazine detachably mounted on the rear of the camera body, a film contained in the supply spool in the magazine is pulled past an exposure aperture by an intermittent-drive film advancing sprocket, while the take up spool in the magazine is driven by a separate driving means through a slip clutch to take up the film advanced from the sprocket. In one embodiment, this arrangement is provided with a film guiding means having buffering and braking functions mounted in the magazine and positioned between the sprocket and the take up spool so that when the sprocket is stopped while the separate driving means is driving the take up spool, the film is brought into frictional engagement with the surface of the film guiding means, whereby the film is braked and stabilized from residual movement during exposure.

REFERENCES:
patent: 3448668 (1969-06-01), Nomura et al.
patent: 3529890 (1970-09-01), Buon
patent: 3537780 (1970-11-01), Angenieux
patent: 3604790 (1971-09-01), Land
patent: 3762291 (1973-10-01), Kimura et al.
patent: 3867021 (1975-02-01), Mueller et al.
patent: 3923386 (1975-12-01), Scholz

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