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:
Sep. 21, 2010
Filed:
Jul. 31, 2009
Kunimasa Kawamura, Suntou-gun, JP;
Arihiro Yamamoto, Ushiku, JP;
Kazutoshi Ishida, Numazu, JP;
Minoru Nakamura, Mishima, JP;
Kunimasa Kawamura, Suntou-gun, JP;
Arihiro Yamamoto, Ushiku, JP;
Kazutoshi Ishida, Numazu, JP;
Minoru Nakamura, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
To provide an electrophotographic developing member which can both be kept from the sticking of a developer and be kept from being deformed by its contacting members, and can form stable images over a long period of time. An electrophotographic developing member characterized in that its surface layer satisfies the following expressions (1) to (3) where the average crosslinking density in each region of up to 100 nm in depth, from 100 nm to 200 nm in depth and from 200 nm to 300 nm in depth from the surface of the surface layer is represented by C, Cand C(mol/cm), respectively:C3<C2<C1;  (1)3×1.3≦1≦3×5.0; and  (2)2.0×103≦7.0×10.  (3)