Microfilm Cassette

Photocopying – Projection printing and copying cameras – Detailed holder for photosensitive paper

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Details

352 78R, G03B 2758

Patent

active

048110582

ABSTRACT:
A film cassette has a bi-directional film transport capable of being driven externally of the cassette and having both extremities of the film enclosed within the cassette. In the cassette a pair of film reels are rotatably supported in symmetrical relation to a diagonal plane, defining an axis of symmetry for the cassette, and extending between the reels and bisecting a corner of the cassette. The two exposure windows are adjacent the corner at respective opposite sides thereof and in symmetrical relation to the plane. Guide means adjacent the exposure windows in the cassette establish a film path between the film reels. The cassette can be selectively inserted into a cassette chamber in a camera in either of two modes of orientation to present a selected one of the exposure windows to the optical path in the camera.

REFERENCES:
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patent: 3229397 (1966-01-01), Shaw
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patent: 3516342 (1970-06-01), Luescher
patent: 3586430 (1971-06-01), Rempala
patent: 4148579 (1979-04-01), Axelrod et al.
patent: 4153361 (1979-05-01), Axelrod
patent: 4175719 (1979-11-01), Speckman et al.
patent: 4214828 (1980-07-01), Axelrod
patent: 4255026 (1981-03-01), Ebener, Jr.

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