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. 18, 2013
Filed:
Jan. 29, 2010
Kunihiko Sekido, Numazu, JP;
Hideaki Nagasaka, Suntou-gun, JP;
Michiyo Sekiya, Mishima, JP;
Shinji Takagi, Yokohama, JP;
Akihiro Maruyama, Mishima, JP;
Kunihiko Sekido, Numazu, JP;
Hideaki Nagasaka, Suntou-gun, JP;
Michiyo Sekiya, Mishima, JP;
Shinji Takagi, Yokohama, JP;
Akihiro Maruyama, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
To provide an electrophotographic photosensitive member that can reproduce good images with less positive ghost and also has a good photosensitivity, the electrophotographic photosensitive member is incorporated in its photosensitive layer with a copolymer having a repeating structural unit represented by the formula (1) and a repeating structural unit represented by the formula (2), or a copolymer having a repeating structural unit represented by the formula (1) and a repeating structural unit represented by the formula (3).Z-A-Z-E  (1)Z-A-Z—W—B—W  (2)Z—B—Z-E  (3)