Copy magnification modifying apparatus

Details Copy magnification modifying apparatus Copy magnification modifying apparatus

1980-12-31

1982-04-06

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Focus or magnification control

355 8, 355 66, G03B 2734, G03B 2740, G03B 2770

Patent

active

043233082

ABSTRACT:
A copy magnification modifying apparatus for changing the copy magnification by displacing optical members involved in the image formation to and maintaining the same at a position capable of forming an image of a selected magnification of an original onto a photosensitive member, including a rotary drive source, an optical member displacing mechanism for transmitting the drive force of the rotary drive source through one-directional rotary clutch and resilient member to said optical members thereby guiding the same along a determined path, an optical member stopper for stopping said optical members at a position corresponding to the selected image magnification, and a drive source control system adapted for continuing the function of the rotary drive source after the stopping of the optical members to cause a deformation in a resilient member thereby generating a resilient force biasing the one-directional rotary clutch in a direction opposite to the rotating direction thereof.

REFERENCES:
patent: 3598489 (1971-08-01), Thomas et al.
patent: 3614222 (1971-10-01), Post et al.
patent: 3873189 (1975-03-01), Whitaker et al.
patent: 3884574 (1975-05-01), Doi et al.

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