Film cassette and a photographing device using the same

Details Film cassette and a photographing device using the same Film cassette and a photographing device using the same

1981-04-30

1984-04-17

Perkey, William B.

354275, G03B 1726

Patent

active

044430779

ABSTRACT:
A film cassette provided with a magnetic disc for recording data relative to a film. The magnetic disc of the film cassette makes two revolutions when one frame of the film is wound up. Data stored in the magnetic disc are read out during the first revolution of the disc, and renewed data are recorded on the disc during the second revolution.

REFERENCES:
patent: 3439598 (1969-04-01), Weitzner et al.
patent: 3592535 (1971-07-01), Gerry
patent: 3593635 (1968-11-01), Seruetnick
patent: 4141629 (1979-02-01), Mattes
patent: 4173401 (1979-11-01), Harvey

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