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:
Nov. 22, 2011
Filed:
Feb. 23, 2007
Noriaki Kuroda, Suntou-gun, JP;
Yoko Kuruma, Mishima, JP;
Hisao Kato, Ashigarakami-gun, JP;
Toshiro Suzuki, Odawara, JP;
Jun Murata, Tokyo, JP;
Noriaki Kuroda, Suntou-gun, JP;
Yoko Kuruma, Mishima, JP;
Hisao Kato, Ashigarakami-gun, JP;
Toshiro Suzuki, Odawara, JP;
Jun Murata, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A charging member having a support, a conductive elastic layer formed on the support and a surface layer formed on the conductive elastic layer, wherein the surface layer contains a polysiloxane having an acrylic group and an oxyalkylene group. This provides a charging member to the surface of which toners and external additives used in the toners can not easily cling even because of repeated use over a long period of time and which therefore enables charging and image reproduction which are stable over a long period of time, even when used in the DC contact charging method; and further provides a process cartridge and an electrophotographic apparatus which have such a charging member.