Electrophotographic copying apparatus

Details Electrophotographic copying apparatus Electrophotographic copying apparatus

1978-04-24

1981-02-03

Braun, Fred L.

Photocopying

Including fiber optics

355 14CH, 430 35, 430902, G03G 1500

Patent

active

042485185

ABSTRACT:
An electrographic apparatus for selectively producing, on a latent image holding member including a first electrostatic latent image produced thereon by a first charge, a second electrostatic latent image composed of a second charge which is negative with respect to the first electrostatic latent image and which is opposite in polarity to the first electrostatic latent image. The apparatus includes a device for selectively applying to the latent image holding member a second charge which is opposite in polarity to the first charge.

REFERENCES:
patent: 2817765 (1957-12-01), Hayford et al.
patent: 2934649 (1960-04-01), Walkup
patent: 3609031 (1971-09-01), Kinoshita
patent: 3615395 (1971-10-01), Yamaji et al.
patent: 3794418 (1974-02-01), Makino et al.
patent: 3967891 (1976-07-01), Rippstein
patent: 3977778 (1976-08-01), Seko et al.
patent: 3997259 (1976-12-01), Bhagat

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