Film take-up apparatus in camera usable together with a film mag

Details Film take-up apparatus in camera usable together with a film mag Film take-up apparatus in camera usable together with a film mag

1982-03-22

1984-05-29

Adams, Russell E.

G03B 118

Patent

active

044511507

ABSTRACT:
A photographing camera used with a film magazine device includes a film feed means and a first driving source for driving said feed means. The film magazine device includes means for taking up the film from said feed means and a second driving source for driving said take-up means the driving time required for said first driving source to feed a definite amount of film changes in accordance with a function as represented by a rectangular hyperbola relative to the output voltage of power supply means for said first and second driving sources. Apparatus for controlling said second driving source comprises drive control means for controlling the driving time of said second driving source so as to drive it for a time shorter than the driving time of said first one by a nearly constant time. The drive control means includes means for changing the driving time of said second driving source in approximation to a function as represented by another rectangular hyperbola.

REFERENCES:
patent: 3927413 (1975-12-01), Kimura et al.
patent: 4174166 (1979-11-01), Daitoku et al.

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