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Patent Searching and Data


Title:
DRIVING DEVICE OF MOTOR FOR PHOTOGRAPHING CAMERA
Document Type and Number:
Japanese Patent JPS5987441
Kind Code:
A
Abstract:

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.


Inventors:
NIWA KATSUHISA
IKEDA TAKAHIRO
Application Number:
JP19702282A
Publication Date:
May 21, 1984
Filing Date:
November 10, 1982
Export Citation:
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Assignee:
WEST ELECTRIC CO
International Classes:
G03B17/00; G03B17/42; (IPC1-7): G03B17/00
Domestic Patent References:
JPS57141630A1982-09-02
JPS5543502A1980-03-27
JPS5426723A1979-02-28
JPS5785042A1982-05-27
JPS57147620A1982-09-11
JPS5681825A1981-07-04
Attorney, Agent or Firm:
Tomoyuki Takimoto