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:
Jun. 10, 2014
Filed:
Jul. 29, 2011
Kadai Takeyama, Komaki, JP;
Takenori Saito, Komaki, JP;
Naoaki Sasakibara, Komaki, JP;
Keiichi Ikegami, Komaki, JP;
Kadai Takeyama, Komaki, JP;
Takenori Saito, Komaki, JP;
Naoaki Sasakibara, Komaki, JP;
Keiichi Ikegami, Komaki, JP;
Tokai Rubber Industries, Ltd., Aichi, JP;
Abstract
The charging roller has a base layer formed of an electroconductive rubber composition containing (a) a polar rubber having an unsaturated bond or an ether bond, (b) an ion carrier containing one or more phosphonium salts selected from the group consisting of phosphonium salts having the formulae (1) and (2), and (c) a cross-linker, wherein the amount of (b) component ranges from 0.1 to 10 parts by mass per 100 parts by mass of the (a) component. The formula (1) represents [(HC)(CH)P]+(CFSO)N—, and the formula (2) represents [(HC)(CH)P]+(CFSO)—.