Push-pull liquid development method and apparatus

Details Push-pull liquid development method and apparatus Push-pull liquid development method and apparatus

1987-03-05

1988-08-30

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3R, 355 15, G03G 1510

Patent

active

047680601

ABSTRACT:
A method and apparatus capable of forming an image in an electrostatic apparatus having a photoconductor with a latent electrostatic image thereon. An electrical potential having a polarity opposite to the photoconductor is applied to a push development electrode thereby coating the image areas, as well as the background areas, of the latent electrostatic image. The background areas are cleaned by applying a potential having the same polarity as the photoconductor to a second pull development electrode.

REFERENCES:
patent: 4264185 (1981-04-01), Ohta
patent: 4500198 (1985-02-01), Daniels
patent: 4588285 (1986-05-01), Tagoku
patent: 4600290 (1986-07-01), Ungemach
patent: 4607940 (1986-08-01), Quang
patent: 4669859 (1987-06-01), Mochizuki et al.

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