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. 07, 2014
Filed:
May. 01, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Yuichi Kikuchi, Susono, JP;
Kazuhiro Yamauchi, Suntou-gun, JP;
Satoru Nishioka, Suntou-gun, JP;
Norifumi Muranaka, Yokohama, JP;
Satoru Yamada, Numazu, JP;
Masahiro Watanabe, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electro-conductive member for electrophotography, including an electro-conductive mandrel and an electro-conductive layer; and a process cartridge and an electrophotographic apparatus using the same. The layer contains a binder resin having a sulfo or a quaternary ammonium group as an ion exchange group, and an ion opposite in polarity to the ion exchange group. The resin has any one of structures represented by formulas (1)-1 and (1)-2, and any one of structures represented by formulas (2)-1 to (2)-3; and the resin has a molecular structure preventing occurrence of a matrix-domain structure. M represents an integer of 2-20, n represents an integer of 5-50, p represents an integer of 1-25, q represents an integer of 1-15, and r represents an integer of 1-12.—(CF)—  Formula (1)-1—(CF—CF—O)—  Formula (1)-2—(CH—CH—O)—  Formula (2)-1—(CH—CHCH—O)—  Formula (2)-2—(CH—CH—CH—CH—O)—  Formula (2)-3