Copyboard

Details Copyboard Copyboard

1975-04-23

1976-08-03

Hix, L. T.

Photocopying

Projection printing and copying cameras

Detailed holder for original

355 3R, G03B 2762

Patent

active

039726134

ABSTRACT:
Disclosed is an improved copyboard for an electrophotographic recording apparatus which records information from a document onto a film. The apparatus consists of a transparent copyboard upon which the document is placed, light means for illuminating the document placed on the copyboard, mirror means for directing the reflected light image from the document to the film, and lens means for focusing the light image on the film. The improvement to the copyboard consists of a white border extending around the perimeter of the copyboard on the light means side of the copyboard and a dark border extending around the inside perimeter of the white border and on the document side of the copyboard. The copyboard eliminates the undesirable edge toning on an electrophotographic member by photographically reproducing in the border regions of the member a very dark border strip surrounded by a very light border strip.

REFERENCES:
patent: 3140945 (1964-07-01), Metcalfe et al.
patent: 3671121 (1972-06-01), Albert
patent: 3784301 (1974-01-01), Sato
patent: 3799666 (1974-03-01), Fukushima et al.
patent: 3883349 (1975-05-01), Sato

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