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:
Oct. 30, 2012
Filed:
Oct. 07, 2011
Norifumi Muranaka, Mishima, JP;
Satoru Yamada, Numazu, JP;
Seiji Tsuru, Susono, JP;
Kazuhiro Yamauchi, Suntou-gun, JP;
Yuka Hirakoso, Kounosu, JP;
Norifumi Muranaka, Mishima, JP;
Satoru Yamada, Numazu, JP;
Seiji Tsuru, Susono, JP;
Kazuhiro Yamauchi, Suntou-gun, JP;
Yuka Hirakoso, Kounosu, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is the following electro-conductive member for electrophotography. The electrical resistance of the member hardly increases even by long-term energization, and hence the member is conducive to stable formation of high-quality electrophotographic images. The electro-conductive member for electrophotography, comprises: an electro-conductive mandrel and an electro-conductive layer, wherein said electro-conductive layer contains an A-B-A type triblock copolymer in which an A-block is a polystyrene having a cation exchange group, and a B-block is a polyolefin, and wherein said A-B-A type triblock copolymer forms a microphase-separated structure comprising a matrix phase formed of said B-block, and one phase formed of the A-block and having a structure selected from the group consisting of a cylindrical structure, a bicontinuous structure and a lamellar structure.