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:
Aug. 05, 2014
Filed:
Jun. 24, 2011
Applicants:
Kunihiko Sekido, Suntou-gun, JP;
Michiyo Sekiya, Mishima, JP;
Akihiro Maruyama, Mishima, JP;
Shinji Takagi, Yokohama, JP;
Hideaki Nagasaka, Suntou-gun, JP;
Inventors:
Kunihiko Sekido, Suntou-gun, JP;
Michiyo Sekiya, Mishima, JP;
Akihiro Maruyama, Mishima, JP;
Shinji Takagi, Yokohama, JP;
Hideaki Nagasaka, Suntou-gun, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/04 (2006.01); G03G 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An undercoat layer of an electrophotographic photosensitive member contains a polymer having a specific repeating structural unit in order to provide an electrophotographic photosensitive member that suppresses positive ghost, and a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member.