Compact illumination system for optically providing a structured

Details Compact illumination system for optically providing a structured Compact illumination system for optically providing a structured

1975-11-21

1978-04-04

Braun, Fred L.

Photocopying

Projection printing and copying cameras

Illumination systems or details

350167, 355 69, G03B 2776

Patent

active

040824500

ABSTRACT:
Apparatus for providing a structured radiation pattern in the charge distribution of a photoreceptor in electrographic reproduction machines. The apparatus is comprised of a source of radiation, a plurality of apertures and a lens system for focusing the radiation transmitted by the apertures onto a charged photoreceptor. The position of the apparatus relative to the photoreceptor can provide a method for control of the structure of the photoreceptor charge. The photoreceptor charge structure can be further controlled by providing preselected patterns for radiation transmitted by the apertures. The charge distribution of the photoreceptor can be structured to form a line or a dot pattern.

REFERENCES:
patent: 1463132 (1923-07-01), Graf
patent: 3178993 (1965-04-01), Ferris et al.
patent: 3397023 (1968-08-01), Land
patent: 3584952 (1971-06-01), Gundlach et al.
patent: 3655284 (1972-04-01), Agliata
patent: 3785262 (1974-01-01), Stroke
patent: 3865485 (1975-02-01), Yevick
patent: 3936173 (1976-02-01), Kidd et al.

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