Optical unit

Details Optical unit Optical unit

1991-10-29

1993-03-02

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355235, 355236, 355243, 355 58, G03G 1504, G03B 2736

Patent

active

051913763

ABSTRACT:
An optical unit including a lens and a mirror unit installed within an image forming apparatus, the lens and mirror unit moving together according to a desired power of magnification so as to expose a photoconductor to the light reflected from the original to form an image corresponding to the desired magnification, wherein the optical unit includes a cam device for moving the mirror unit, the cam device including a cam which is connected to a driving source and rotates according to the various power of magnification, and a cam follower which moves around the cam to reciprocate the mirror unit; and a lock means on the circumferential surface of the cam, the lock means engaging the cam follower to prevent the mirror unit from moving when a specific variable power of magnification is selected.

REFERENCES:
patent: 4077715 (1978-03-01), Greene
patent: 4095880 (1978-06-01), Shrogren et al.
patent: 4142793 (1979-03-01), Schilling
patent: 4487497 (1984-12-01), Kimura et al.
patent: 4540273 (1985-09-01), Tamura
patent: 4582418 (1986-04-01), Kozuka et al.

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