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:
Apr. 16, 1991
Filed:
Jun. 23, 1989
Kenichi Karakida, Kanagawa, JP;
Shigeru Yagi, Kanagawa, JP;
Yuzuru Fukuda, Kanagawa, JP;
Masayuki Nishikawa, Kanagawa, JP;
Te N Roh, Kanagawa, JP;
Noriyoshi Takahashi, Kanagawa, JP;
Masato Ono, Kanagawa, JP;
Masaki Yokoi, Kanagawa, JP;
Yumiko Komori, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A photoreceptor for electrophotography, comprising: a photoconductive layer substantially composed of amorphous silicon, and first, second and third surface layers substantially composed of amorphous silicon added with nitrogen atom, those layers being formed on a support. The thickness d.sub.1, d.sub.2 and d.sub.3 of the first, second and third surface layers satisfies the following relation: d.sub.2 >d.sub.1 and d.sub.2 >d.sub.3, and the nitrogen concentrations c.sub.1, c.sub.2 and c.sub.3 of said first, second and third surface layers satisfy the following relation: c.sub.3 >c.sub.2 >c.sub.1.