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. 14, 1997
Filed:
Sep. 28, 1995
Applicant:
Inventors:
Minoru Umeda, Numazu, JP;
Tatsuya Niimi, Numazu, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430 58 ; 430 59 ;
Abstract
An electrophotographic photoconductor is disclosed which includes an electroconductive support, and a photoconductive layer formed thereon and having a charge generation layer and a charge transport layer, wherein the charge generation layer contains a polymeric charge transporting material having an ionization potential of 6.0 eV or less. The photoconductor may include an undercoat layer, an intermediate layer and/or a surface protecting layer, each of which may contain a polymeric charge transporting material. Specific use of the polymeric charge transporting material together with a charge transporting small molecule is also disclosed.