Cleaning unit for an optical system in a copying machine

Details Cleaning unit for an optical system in a copying machine Cleaning unit for an optical system in a copying machine

1976-05-20

1978-02-14

Griffin, Donald A.

Photocopying

Projection printing and copying cameras

With temperature or foreign particle control

350 61, 355 1, G03B 2752, G03B 2700

Patent

active

040742172

ABSTRACT:
A cleaning unit for an optical system of slit exposure type is provided for a copying machine in which either an original receptacle or the optical system is movable in reciprocal motion for scanning an original on the receptacle to be copied. By utilizing the relative movement of the receptacle and the optical system, a lens face or other faces of the optical system which are to be maintained cleaned are automatically wiped by means of a soft material each time the scanning takes place.

REFERENCES:
patent: 2461668 (1949-02-01), Thompson
patent: 3175481 (1965-03-01), Lahr
patent: 3402418 (1968-09-01), Le Roy
patent: 3438706 (1969-04-01), Tanaka et al.
patent: 3771866 (1973-11-01), Ogawa
patent: 3977781 (1976-08-01), Eppe et al.

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