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:
Oct. 11, 1994
Filed:
Feb. 18, 1992
Yoshiyuki Ono, Minami-ashigara, JP;
Masaki Yokoi, Minami-ashigara, JP;
Kazuo Yamasaki, Minami-ashigara, JP;
Hiroyuki Hotta, Minami-ashigara, JP;
Kenichi Kobayashi, Ebina, JP;
Takayuki Yamada, Ebina, JP;
Hitoshi Kojima, Ebina, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
An electrophotographic photoreceptor comprising a conductive substrate having provided thereon a photoconductive layer is disclosed, said photoconductive layer containing a high polymeric compound comprising a repeating unit comprised of a tetracarboxylic acid anhydride skeleton and a divalent organic group skeleton having an aromatic nucleus, said two skeletons being bonded via a nitrogen atom. Said high polymeric compound is formed by co-deposition of a tetracarboxylic acid anhydride compound and an aromatic diamine compound. The photoreceptor exhibits high sensitivity, high durability, and excellent image quality retention even when used repeatedly or in a high humidity environment.