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:
Jan. 01, 2013
Filed:
Mar. 05, 2010
Applicants:
Yoshiaki Kawasaki, Susono, JP;
Kazukiyo Nagai, Numazo, JP;
Yukio Fujiwara, Numazu, JP;
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A photoreceptor including an electroconductive substrate, a photosensitive layer located overlying the electroconductive substrate, and a surface layer located overlying the photosensitive layer, the surface layer including a cross-linked material of a radical polymerizable monomer having at least 3 functional groups with no charge transport structure and a radical polymerizable compound having a charge transport structure, the surface layer having a sulfur concentration of 50 ppmw or lower.