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. 08, 2008
Filed:
Mar. 19, 2004
Naohiro Toda, Kanagawa, JP;
Tatsuya Niimi, Shizuoka, JP;
Ryohichi Kitajima, Shizuoka, JP;
Yoshiaki Kawasaki, Shizuoka, JP;
Naohiro Toda, Kanagawa, JP;
Tatsuya Niimi, Shizuoka, JP;
Ryohichi Kitajima, Shizuoka, JP;
Yoshiaki Kawasaki, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An electrophotographic photoconductor includes an electroconductive substrate, a charge generation layer, and a charge transport layer formed by using a halogen-free solvent, arranged in this order, in which the charge generation layer contains a charge generation material having an average particle diameter smaller than a surface roughness of a plane where the electroconductive substrate is arranged, and a polyvinyl acetal resin having a ratio Mw/Mn of a weight-average molecular weight Mw to a number-average molecular weight Mn is 2.2 or more.