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. 22, 1989
Filed:
Feb. 16, 1988
Shuji Yoshizawa, Tokyo, JP;
Tatsuya Ikezue, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An electrophotographic photoreceptor constituted by a conductive substrate, and a photoconductive layer, provided on the conductive substrate, for generating photocarriers upon radiation of light is disclosed. The photoconductive layer has a charge-generating layer and a charge-retaining layer. The charge-generating layer comprises a semiconductor containing silicon as a major constituent. The charge-retaining layer comprises a multilayered body constituted by alternately stacking first amorphous semiconductor layers containing silicon as a major constituent and second amorphous semiconductor layers containing silicon as a major constituent and at least one element selected from the group consisting of carbon, oxygen, and nitrogen. A concentration of the element is changed in a direction of thickness of the charge-retaining layer for each second amorphous semiconductor layer.