Optical reproduction apparatus and improved bellows therefor

Details Optical reproduction apparatus and improved bellows therefor Optical reproduction apparatus and improved bellows therefor

1989-03-30

1990-08-14

Prescott, A. C.

Photocopying

Contact printing

Light boxes

355210, 355232, 354189, 354190, G03G 1500

Patent

active

049491261

ABSTRACT:
A bellows for use in an exposure station of an electrophotographic copier or other optical reproduction apparatus. In one embodiment the bellows is a dual bellows and has one section thereof coupled to a movable lens for changing the image reduction/magnification ratio of the station. The lens movement is such that movement of the lens from either of the extreme imaging positions to the other is accomplished by collapsing of one of the bellows members and expanding the other bellows member. In an alternative embodiment one of the bellows members is replaced with a rigid cowl-like member.

REFERENCES:
patent: 577891 (1897-03-01), Turner
patent: 730468 (1903-06-01), Mills
patent: 1031786 (1912-07-01), Hajjar
patent: 1272029 (1918-07-01), Finn
patent: 1724566 (1929-08-01), Davidson
patent: 2619014 (1952-11-01), Geddes
patent: 2767630 (1956-10-01), Karpf
patent: 3587432 (1971-06-01), Koch
patent: 4768058 (1988-08-01), Kowalski

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