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. 14, 2011
Filed:
Sep. 01, 2005
Noriaki Kuroda, Suntoh-gun, JP;
Hisao Kato, Ashigara-gun, JP;
Toshinari Miura, Kawasaki, JP;
Toshiro Suzuki, Odawara, JP;
Takumi Furukawa, Susono, JP;
Michitaka Kitahara, Numazu, JP;
Jun Murata, Tokyo, JP;
Yukinori Nagata, Mishima, JP;
Masaki Ozawa, Mishima, JP;
Kazuyuki Shishitsuka, Tsukuba, JP;
Yoko Kuruma, Mishima, JP;
Noriaki Kuroda, Suntoh-gun, JP;
Hisao Kato, Ashigara-gun, JP;
Toshinari Miura, Kawasaki, JP;
Toshiro Suzuki, Odawara, JP;
Takumi Furukawa, Susono, JP;
Michitaka Kitahara, Numazu, JP;
Jun Murata, Tokyo, JP;
Yukinori Nagata, Mishima, JP;
Masaki Ozawa, Mishima, JP;
Kazuyuki Shishitsuka, Tsukuba, JP;
Yoko Kuruma, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An object of the present invention is to provide a charging member in which a toner, an additive for use in the toner, or the like is hard to adhere to the surface even under repeated use for a long time, and hence the charging and image output are made stable for a long time even if the charging member is used in the DC contact charging method, and a process cartridge and an electrophotographic apparatus having the charging member. The present invention provides a charging member comprising a support, a conductive elastic layer formed on the support, and a surface layer formed on the conductive elastic layer, characterized in that the surface layer contains a polysiloxane having a fluoroalkyl group and an oxyalkylene group, and a process cartridge and an electrophotographic apparatus having the charging member.