Film feeding control device for accurate alignment of film frame

Details Film feeding control device for accurate alignment of film frame Film feeding control device for accurate alignment of film frame

1994-04-04

1997-05-06

Adams, Russell E.

Photography

With film drive

Film movement limiting means

G03B 100

Patent

active

056276176

ABSTRACT:
A film feeding cessation adjusting device for cameras is capable of accurately stopping to a predetermined stopping position each frame of a film having a minimum number of perforations in order to ensure a sufficient data recording area. The film feeding cessation adjusting device includes a film feeding device for feeding a film, a perforation detection device for detecting a perforation of the film, a timer device for measuring a time required for film feeding, a stopping signal generating device for obtaining a time which is delayed by a predetermined period from the time at which the perforation detection device detects the perforation, on the basis of the results of the measurement of the timer device, and for generating a feeding stopping signal at the obtained time, and a control device for stopping film feeding of the film feeding device when it receives the feeding stopping signal.

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patent: 4980710 (1990-12-01), Harvey
patent: 4996549 (1991-02-01), Yamaguchi
patent: 5008692 (1991-04-01), Diehl et al.
patent: 5130728 (1992-07-01), Goto et al.

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