Method and apparatus for electrophotography

Details Method and apparatus for electrophotography Method and apparatus for electrophotography

1975-11-17

1977-09-06

Braun, Fred L.

Photocopying

Including fiber optics

96 1R, G03G 1500

Patent

active

040464660

ABSTRACT:
An electrophotographic method by the use of a photosensitive screen having a number of tiny openings therein and by modulation of corona ion current, wherein a primary electrostatic latent image is first formed on the screen by application of electrostatic charge in conformity to an original image to be reproduced, thus a secondary electrostatic latent image is formed by modulating corona ion current for a plurality of times by the use of one and the same primary electrostatic latent image, and applying to the screen, alternately with the corona ion modulation, a corona ion current of a polarity capable of eliminating the charge polarity of the modulating corona ion current.

REFERENCES:
patent: 3615395 (1971-10-01), Yamaji et al.
patent: 3898085 (1975-08-01), Suzuki et al.
patent: 3930850 (1976-01-01), Matsumoto et al.
patent: 3936177 (1976-02-01), Moriyama et al.
patent: 3945725 (1976-03-01), Moriyama et al.

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