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:
Apr. 06, 2010
Filed:
Dec. 21, 2005
Yoko Kuruma, Mishima, JP;
Noriaki Kuroda, Suntoh-gun, JP;
Hisao Kato, Ashigarakami-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, Ashigarakami-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;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A charging member has a surface layer. The surface layer contains a polysiloxane having a first unit, a second unit and a third unit each of which is represented by a specific formula. The ratio of the sum of the mole numbers of the first and second units to the sum of the mole numbers of the first to third units is in a specific range.