Copying device with a system for a reflex exposure of the origin

Details Copying device with a system for a reflex exposure of the origin Copying device with a system for a reflex exposure of the origin

1974-10-23

1976-05-18

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 67, 355 75, G03G 1500, G03B 2754, G03B 2762

Patent

active

039573702

ABSTRACT:
A photocopying apparatus utilizing an exposure plate on which an original pressed image-side downward is exposed to give a reflex image by light from sources disposed laterally below that plate, is caused to give sharper reflex images of transparent originals by the provision of a transparent layer placed over the original, whereby the edge shadows of opaque image portions of the original are broadened and produce displaced reflection areas of reduced intensity. The transparent layer preferably has a thickness of at least 5 mm., and a roughened, translucent surface contacting the original. It may be a frosted glass plate serving also to press the original against the exposure plate.

REFERENCES:
patent: 3119301 (1964-01-01), Beattie et al.

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