Optical system-driving device

Details Optical system-driving device Optical system-driving device

1991-10-29

1993-08-31

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355233, G03G 1528

Patent

active

052413454

ABSTRACT:
An optical system driving device has a motor which rotates constantly in one direction for providing rotary driving power. A regular rotation electromagnetic clutch is connected to the rotating motor for transmitting driving power to the optical system for reciprocal movement of the optical system in one direction. A reverse electromagnetic clutch connected to the rotor motor transmits driving power to the optical system for reciprocal movement thereof in the opposite direction. A control circuit is provided which receives a pulse signal for controlling either the regular rotation or the reverse electromagnetic clutch at the start of the regular rotation electromagnetic clutch to gradually increase the effective driving power provided to the optical system to move the optical system at the start of movement.

REFERENCES:
patent: 4148578 (1979-04-01), Bujese
patent: 4377337 (1983-03-01), Beck
patent: 4386842 (1983-06-01), Beery
patent: 4408867 (1983-10-01), Fujii et al.
patent: 4728988 (1988-03-01), Tsutsui et al.
patent: 4891669 (1990-01-01), Hiroki
patent: 5002366 (1991-03-01), Okazaki
patent: 5015936 (1991-05-01), Inoue
patent: 5021822 (1991-06-01), Morikawa

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