Unnecessary charge removing device from a latent image bearing e

Details Unnecessary charge removing device from a latent image bearing e Unnecessary charge removing device from a latent image bearing e

1983-12-01

1986-04-29

Braun, Fred L.

Photocopying

Including fiber optics

355 71, G03G 1504

Patent

active

045853304

ABSTRACT:
An electrophotographic copying machine includes a device for removing charges of portions of a latent image bearing element which are unnecessary for forming a latent image. The device includes a light source, the latent image bearing element, and a light shade plate which is positioned between the light source and the latent image bearing element. The light source is positioned at the focus point of a fresnel lens. The device can be applied to a type of electrophotographic copying machine having a three-layered latent image bearing element.

REFERENCES:
patent: 3514200 (1970-05-01), Bowker
patent: 3784301 (1974-01-01), Sato
patent: 3792913 (1974-02-01), Simmons
patent: 3799666 (1974-03-01), Fukushima et al.
patent: 3967896 (1976-07-01), Looney et al.
patent: 4344691 (1982-08-01), Grant et al.
patent: 4427284 (1984-01-01), Dannatt

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