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. 03, 2012
Filed:
Jul. 02, 2008
Yukio Fujiwara, Numazu, JP;
Tetsuro Suzuki, Fuji, JP;
Hiroshi Tamura, Susono, JP;
Hiroshi Ikuno, Yokohama, JP;
Hidetoshi Kami, Numazu, JP;
Takafumi Iwamoto, Numazu, JP;
Yukio Fujiwara, Numazu, JP;
Tetsuro Suzuki, Fuji, JP;
Hiroshi Tamura, Susono, JP;
Hiroshi Ikuno, Yokohama, JP;
Hidetoshi Kami, Numazu, JP;
Takafumi Iwamoto, Numazu, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image bearing member including an electroconductive substrate, a charge generating layer located overlying the electroconductive substrate, a charge transport layer located overlying the charge generating layer, the charge transport layer comprising a charge transport material and a protective layer having a thickness of from 3 to 15 μm located overlying the charge transport layer, wherein the density of the charge transport material in the protective layer at depth of 2 μm from the surface of the charge transport layer satisfies the following relationship:10(%)≦(Charge transport material)/{(Radical polymerizable monomer having a charge transport structure)+(Radical polymerizable monomer having no charge transport structure)+(Charge transport material)}×100≦30(%).