Electrostatic recording apparatus

Details Electrostatic recording apparatus Electrostatic recording apparatus

1984-11-16

1986-08-26

Prescott, A. C.

Photocopying

Including fiber optics

355 3DR, 355 14R, 355 3CH, 355 14CH, 361225, G03G 1500

Patent

active

046079378

ABSTRACT:
An electrostatic recording apparatus comprises a photosensitive drum, and this photosensitive drum includes a substrate composed of a conductive material and a photoconductive layer composed of amorphous silicon which is formed thereon. A resistor is connected between the conductive substrate and a reference potential. When a current flows through the photoconductive layer of the photosensitive drum, a bias voltage is produced by this resistor. The surface potential of the photoconductive layer is kept constant by the voltage of the photoconductive layer and the bias voltage, and accordingly, the voltage to be kept by the photoconductive layer itself can be small, and the amount of the current flowing into the photoconductive layer can be small. Preferably, a capacitor is connected in parallel with the resistor. This capacitor prevents the surface potential of the photoconductive layer from being affected by AC discharging of a separating corotron.

REFERENCES:
patent: 4148577 (1979-04-01), Nishikawa et al.
patent: 4165169 (1979-08-01), Miyashita et al.
patent: 4348098 (1982-09-01), Koizumi
patent: 4371252 (1983-02-01), Uchida et al.
patent: 4484809 (1984-11-01), Coleman
patent: 4484812 (1984-11-01), Takayanagi

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