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:
May. 18, 2010
Filed:
Jun. 28, 2007
Hiroki Uematsu, Suntoh-gun, JP;
Harunobu Ogaki, Suntoh-gun, JP;
Masataka Kawahara, Mishima, JP;
Atsushi Ochi, Numazu, JP;
Akira Shimada, Suntoh-gun, JP;
Akio Maruyama, Tokyo, JP;
Kyoichi Teramoto, Abiko, JP;
Toshihiro Kikuchi, Yokohama, JP;
Akio Koganei, Ichikawa, JP;
Takayuki Sumida, Kawasaki, JP;
Hiroki Uematsu, Suntoh-gun, JP;
Harunobu Ogaki, Suntoh-gun, JP;
Masataka Kawahara, Mishima, JP;
Atsushi Ochi, Numazu, JP;
Akira Shimada, Suntoh-gun, JP;
Akio Maruyama, Tokyo, JP;
Kyoichi Teramoto, Abiko, JP;
Toshihiro Kikuchi, Yokohama, JP;
Akio Koganei, Ichikawa, JP;
Takayuki Sumida, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electrophotographic photosensitive member is disclosed which is excellent in cleaning performance, has improved durability, and suppresses image defects in various environments. The electrophotographic photosensitive member has a support and a photosensitive layer provided on the support. Depressed portions independent of one another are formed on the surface of the electrophotographic photosensitive member so that the number of the depressed portions per 100 μm square is 76 or more and 1,000 or less. The openings of the depressed portions have an average major axis diameter of more than 3.0 μm and 14.0 μm or less.