The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 1986
Filed:
Nov. 16, 1984
Koji Minami, Osaka, JP;
Sanyo Electric Co., Ltd., , JP;
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.