Illumination means for electrographic reproduction

Details Illumination means for electrographic reproduction Illumination means for electrographic reproduction

1979-09-17

1980-12-16

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Illumination systems or details

355 8, 355 51, G03B 2754

Patent

active

042393833

ABSTRACT:
An illumination means for an electrographic reproduction machine in which a single light source is used in combination with a primary and a secondary elliptical reflector to furnish direct and reflected light as a narrow band of illumination and in which a third flat reflector is used to reflect a portion of the light from the light source which would not otherwise be directed in such a narrow band back into the primary and secondary reflectors to be reflected into the narrow band and to balance the direct and reflected light.

REFERENCES:
patent: 3302519 (1967-02-01), Young
patent: 3532424 (1970-10-01), Miles
patent: 3947115 (1976-03-01), Hamaguchi
patent: 3977784 (1976-08-01), Hara
patent: 3982116 (1976-09-01), Sakuma
patent: 4092066 (1978-05-01), Kawai
IBM Technical Disclosure Bulletin, "Illumination To Eliminate Shadows", Bersot, et al., vol. 15, No. 2, Jul. 1972, p. 521.

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