Film feeding control device

Details Film feeding control device Film feeding control device

1996-02-27

1998-10-06

Metjahic, Safet

Photography

With film drive

Mechanical detail

396269, 396397, 396535, G03B 100

Patent

active

058191283

ABSTRACT:
A control device for feeding and positioning a film precisely, in a camera, a printing apparatus, etc., includes a photo interrupter with a light emitter, a light detector for detecting a light emitted from the light emitter, and a holding member for keeping both the light emitter and the light detector in position; a frame with a guiding member for guiding a film having a longitudinal edge with a plurality of perforations which travels between the light emitter and the light detector of the photo interrupter; a perforation detector for detecting a perforation based upon a signal outputted from the light detector, which outputs the signal each time a perforation of the film edge passes a location corresponding to an optical axis existing between the light emitter and the light detector; and a controller for controlling a film feeding operation in accordance with the detection of a perforation by the perforation detector.

REFERENCES:
patent: 4209692 (1980-06-01), Hudspeth
patent: 4309605 (1982-01-01), Okabe
patent: 5049908 (1991-09-01), Murakami
patent: 5345286 (1994-09-01), Stiehler
patent: 5504549 (1996-04-01), Kazami et al.
patent: 5517266 (1996-05-01), Funaki et al.
patent: 5548363 (1996-08-01), Ohtsuka
patent: 5565912 (1996-10-01), Easterly et al.
patent: 5625850 (1997-04-01), Nishinou
"A Guidebook of Electronic Parts," Electric Technique Magazine, Oct., 1987, p. 89.

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