PURPOSE: To control the winding and rewinding of a film electrically by reducing mechanical means, to reduce failures, and to stabilize and improve the maneuverability by applying an output signal from a motor driving means to generate a counting pulse signal only when the traveling of the film is detected.
CONSTITUTION: If a pressing a signal is applied to an SR-FF22 during release by closing a back cover and actuating a shutter releasing button, a motor 23 winds up the film. When the perforation 25 of the film is moved, a traveling detecting switch 19 is turned on and a counting pulse signal generating circuit 15 outputs a film counting pulse signal. If the prescribed number of frames of the film is counted, the motor stops rotating and the number of frames starting exposure is displayed. Since the film traveling detecting switch 19 is not turned on at the completion of the photographing of the final frame of the film, a film moving direction determining circuit 10 outputs a film rewinding driving signal and the motor 23 turns reversely.
IKEDA TAKAHIRO
JPS57141630A | 1982-09-02 | |||
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