Slit exposure type illumination apparatus

Details Slit exposure type illumination apparatus Slit exposure type illumination apparatus

1980-03-10

1981-11-17

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Illumination systems or details

362 16, G03B 2754

Patent

active

043008313

ABSTRACT:
A slit exposure type illumination apparatus for use in copying machines comprising a reflector having a quadratic reflecting surface, a hollow cylindrical member, at least part of which has the property of reflecting infrared light and allowing visible light to pass through and which is disposed near the focal line of the reflector, and a linear light source which is disposed near or in conformity with the focal line of the reflector, within the hollow member, so as to cause infrared light emitted from the linear light source to return to the linear light source by the hollow member to save electric energy required for the linear light source.

REFERENCES:
patent: 3689760 (1972-09-01), Stewart, Jr.
patent: 4095881 (1978-06-01), Maddox
patent: 4143964 (1979-03-01), Ogura et al.
patent: 4178093 (1979-12-01), Yanagawa et al.
patent: 4186431 (1980-01-01), Engel et al.
patent: 4239383 (1980-12-01), Peterson
IBM Technical Disclosure Bulletin, "Copier Machine Illumination Package", Roberts, vol. 19 No. 2, Jul. 1976, pp. 384, 385.
IBM Technical Disclosure Bulletin, "Copier Illumination Apparatus", Maddox, vol. 18, No. 1, pp. 41-42 Jun. 1975.

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