Dual optical projection system for copying machines

Details Dual optical projection system for copying machines Dual optical projection system for copying machines

1975-05-02

1976-12-21

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Copying both sides of original

355 8, G03B 2732, G03B 2752

Patent

active

039985431

ABSTRACT:
A copying machine which can image the upper side or the underside of an original onto a photosensitive surface. The original is placed onto a copyboard or between two copyboards, and the projection system for integral imaging of the upper side or the underside of such original comprises two units one of which images the upper side and the other of which images the underside of the original. A switchover device, which may constitute a component of one of the projection units, is provided to select that side of an original which is to be imaged. Alternatively, the switchover device activates the lamps for illumination of the upper side or the underside of an original.

REFERENCES:
patent: 3844653 (1974-10-01), Kelly
patent: 3844654 (1974-10-01), Guenther

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