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:
Feb. 01, 2011
Filed:
Feb. 14, 2008
Naohiro Toda, Yokohama, JP;
Yoshiki Yanagawa, Numazu, JP;
Takaaki Ikegami, Susono, JP;
Makoto Yasuda, Hiratsuka, JP;
Takeshi Orito, Yokohama, JP;
Naohiro Toda, Yokohama, JP;
Yoshiki Yanagawa, Numazu, JP;
Takaaki Ikegami, Susono, JP;
Makoto Yasuda, Hiratsuka, JP;
Takeshi Orito, Yokohama, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
This invention relates to image bearing member and an image forming apparatus that employs the image bearing member. The image bearing member contains an electroconductive substrate; a charge generation layer; a charge transport layer; a cross-linking surface protective layer, and a monomer having one radical polymerizable functional group with a charge transport structure. The cross-linking surface protective layer is formed by curing a monomer having at least three radical polymerizable functional groups without a charge transport structure. For the image bearing member, the ratio of the layer thickness of the cross linking surface protective layer to the layer thickness of the charge transport layer is from 0.7 to 1.3.