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. 23, 2009
Filed:
Jun. 28, 2007
Harunobu Ogaki, Suntoh-gun, JP;
Hiroki Uematsu, Suntoh-gun, JP;
Masataka Kawahara, Mishima, JP;
Atsushi Ochi, Numazu, JP;
Kyoichi Teramoto, Abiko, JP;
Akira Shimada, Suntoh-gun, JP;
Akio Maruyama, Tokyo, JP;
Toshihiro Kikuchi, Yokohama, JP;
Akio Koganei, Ichikawa, JP;
Takayuki Sumida, Kawasaki, JP;
Harunobu Ogaki, Suntoh-gun, JP;
Hiroki Uematsu, Suntoh-gun, JP;
Masataka Kawahara, Mishima, JP;
Atsushi Ochi, Numazu, JP;
Kyoichi Teramoto, Abiko, JP;
Akira Shimada, Suntoh-gun, JP;
Akio Maruyama, Tokyo, JP;
Toshihiro Kikuchi, Yokohama, JP;
Akio Koganei, Ichikawa, JP;
Takayuki Sumida, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electrophotographic photosensitive member has, on the surface of its photosensitive layer, has a plurality of depressed portions which are independent from one another, and, where the major-axis diameter of each depressed portion is represented by Rpc and the depth that shows the distance between the deepest part of each depressed portion and the opening thereof is represented by Rdv, the depressed portions each have a ratio of depth to major-axis diameter, Rdv/Rpc, of from more than 1.0 to 7.0 or less.