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:
Jul. 24, 1990
Filed:
Sep. 28, 1989
Konica Corporation, Tokyo, JP;
Abstract
A photoconductive element having improved physical properties is disclosed. The photoconductive element comprises an electro-conductive substrate, a photoconductive layer containing a photoconductive material and, optionally, a protective layer, wherein either one of said photoconductive layer or said protective layer contains a compound which has in its molecular a hindered amine structure unit represented by formula [Ia] and a hindered phenol structure unit represented by formula [Ib]; ##STR1## wherein, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently represent a hydrogen atom, an alkyl group, or an aryl group; Z represents a group of atoms necessary to complete a nitrogen-containing alicyclic group; R.sub.5 represents an alkyl group; R.sub.6 is a branched alkyl group; R.sub.7, R.sub.8 and R.sub.9 independently represent a hydrogen atom, a hydroxy group, an alkyl group, or an aryl group; and R.sub.10 represents a hydrogen atom, an alkyl group, or an alkeny group; provided that said hindered amine structure unit is connected through one of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and Z thereof, optionally through a divalent organic group and/or one of R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10, with said hindered phenol structure unit, and that R.sub.8 and R.sub.9 may be connected with each other to form a ring.