Mechanism for preventing collision of half-speed mirror from occ

Details Mechanism for preventing collision of half-speed mirror from occ Mechanism for preventing collision of half-speed mirror from occ

1983-05-20

1984-12-04

Gonzales, John

Photocopying

Including fiber optics

355 49, 355 57, 355 11, 250560, 358285, G03B 2734, G03B 2740, G03B 2770, G03B 1530

Patent

active

044860927

ABSTRACT:
A collision preventing mechanism for preventing a collision between a zoom lens system and a half-speed mirror in a variable scale factor copying apparatus for forming an electrostatic, latent image through the lens system onto a photo-sensitive drum by scanning an original document by a full-speed mirror and the half-speed mirror includes a device for moving the zoom lens system away from the half-speed mirror when an abnormal approach of the half-speed mirror causes the half-speed mirror to be moved into the vicinity of a zone which is occupied by the zoom lens system. This mechanism also includes a detector for detecting the abnormal approach of the half-speed mirror.

REFERENCES:
patent: 4373803 (1983-02-01), Shogren
patent: 4436416 (1984-03-01), Negoro et al.

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