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:
Jul. 14, 2015
Filed:
Jul. 02, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Masataka Kodama, Mishima, JP;
Taichi Sato, Numazu, JP;
Noriko Suzumura, Mishima, JP;
Noriyuki Doi, Numazu, JP;
Masahiro Kurachi, Fujisawa, JP;
Hiroki Masu, Numazu, JP;
Noriaki Kuroda, Suntou-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
There is provided a charging member having charging performance that is not easily changed even by long-term use. The charging member includes an electro-conductive support, an elastic layer, and a surface layer. The elastic layer contains particles in such a manner that at least a part of the particles are exposed from the elastic layer, and thus a surface of the elastic layer is roughened. The particles are high-molecular-weight polyethylene particles. The surface of the elastic layer is covered with the surface layer in such a manner that the surface shape of the elastic layer is reflected in the surface shape of the charging member. The surface layer contains a high-molecular compound having a specific constitutional unit.