Electrostatic recording apparatus

Details Electrostatic recording apparatus Electrostatic recording apparatus

1982-01-08

1985-04-16

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 14E, G03G 1500

Patent

active

045112401

ABSTRACT:
An electrostatic recording apparatus has a sensor for detecting a surface potential of a photosensitive member on which an electrostatic latent image is formed and a controller for controlling a developing bias voltage in accordance with the detected surface potential. The developing bias voltage includes an A.C. component and a D.C. component which are selectively used in accordance with a latent image potential. The frequency of the A.C. developing bias and the magnitude of the D.C. developing bias are variable so that an optimum quality of image is reproduced.

REFERENCES:
patent: 4215930 (1980-08-01), Miyakawa et al.
patent: 4268165 (1981-05-01), Bradmon
patent: 4277162 (1981-07-01), Kasahara et al.
patent: 4279498 (1981-07-01), Eda et al.
patent: 4348099 (1982-09-01), Fantozzi
patent: 4372672 (1983-02-01), Pries
patent: 4372676 (1983-02-01), Miyata et al.
patent: 4390266 (1983-06-01), Uchida

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