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. 24, 1982
Filed:
Feb. 09, 1981
Atsushi Kakuta, Hitachiota, JP;
Shigeo Suzuki, Hitachi, JP;
Yasuki Mori, Hitachi, JP;
Hirosada Morishita, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A complex type electrophotographic plate comprises a conductive support; a first layer, adhered to the support, of a charge generating material, said first layer having a thickness of 0.1 to 5 .mu.m; and a second layer, superposed on the first layer, of a homogeneous mixture of a charge transport material and an insulating, resinous binder therefor, said second layer having a thickness of 5 to 100 .mu.m and being substantially transparent to light of a wave length of 4200 to 8000 A; wherein said charge transport material is at least one member selected from the class consisting of nonionic compounds represented by the general formula: X--(CH.dbd.CH).sub.n Ar where X is a heterocyclic group selected from the group consisting of ##STR1## and Y is O or S, R is a lower alkyl group; the hetero ring may be substituted; n is an integer of 0, 1 or 2; and Ar is an aryl or substituted aryl group. The electrophotographic plate has a high light sensitivity and can be used in more than 10.sup.3 repetitions without fatigue.