Film and photographic apparatus

Details Film and photographic apparatus Film and photographic apparatus

1979-03-14

1980-09-23

Hix, L. T.

354207, 354213, G03B 122, G03B 1742, G03B 1904

Patent

active

042239907

ABSTRACT:
A film magazine contains a roll of film having an image portion and a leader. The filmstrip is perforated at predetermined intervals with larger perforations in the image portion than in the leader. A camera mechanism is disclosed which uses the perforations to advance the filmstrip, detects the size of the perforations, and meters only when a large, image portion perforation is advanced to a predetermined position in the camera.

REFERENCES:
patent: 2559892 (1951-07-01), Mihalyi et al.
patent: 3735681 (1973-05-01), Galbraith, Jr.
patent: 3943536 (1976-03-01), Oshima

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