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. 28, 1987
Filed:
Sep. 01, 1983
Applicant:
Inventor:
Tsutomu Ishida, Tokyo, JP;
Assignee:
Ricoh Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
430 58 ; 430 57 ; 430 85 ; 430 86 ;
Abstract
A composite photosensitive element for use in electrophotography which comprises an electrically conductive substrate and a first photoconductive layer and second photoconductive layer laminated on said substrate in the order named, said first photoconductive layer being a Se-As vapordeposited layer or a Se-Te-As vapordeposited layer, said second photoconductive layer being a multilayer type one comprising a charge transport layer and a charge carrier generating layer consisting essentially of azo pigment in the order named from the surface and a process of forming images using same.