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:
Feb. 22, 1994
Filed:
Nov. 13, 1992
Yoshio Kashizaki, Kanagawa, JP;
Koichi Suzuki, Kanagawa, JP;
Shintetsu Go, Kanagawa, JP;
Satomi Sugiyama, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electrophotographic photosensitive member has an electroconductive substrate and a photosensitive layer formed thereon. The photosensitive layer contains an acetal resin having a component unit represented by the following formula (1): ##STR1## wherein X is ##STR2## R.sub.1 is a substituted or unsubstituted aryl group and a substituted or unsubstituted heterocyclic group; R.sub.2 is a hydrogen atom and a substituted or unsubstituted alkyl group; R.sub.3 is a substituted or unsubstituted alkyl group; A is a substituted or unsubstituted heterocyclic group and ##STR3## R.sub.4 is a substituted or unsubstituted heterocyclic group; R.sub.5 is a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group and a substituted or unsubstituted heterocyclic group; and n and m are each 0, 1, 2 and 3.