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. 21, 2016
Filed:
Aug. 29, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Haruyuki Tsuji, Yokohama, JP;
Atsushi Fujii, Yokohama, JP;
Kazuhisa Shida, Kawasaki, JP;
Nobuhiro Nakamura, Numazu, JP;
Hideaki Matsuoka, Mishima, JP;
Hiroyuki Tomono, Numazu, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided are an electrophotographic photosensitive member in which a residual potential hardly increases at the time of image formation, a pattern memory hardly occurs, and the crack of a conductive layer hardly occurs, and a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member. To this end, the conductive layer of the electrophotographic photosensitive member contains a titanium oxide particle coated with tin oxide doped with phosphorus, a tin oxide particle doped with phosphorus, and a binding material, and when a total volume of the conductive layer is represented by V, a total volume of the titanium oxide particle coated with tin oxide doped with phosphorus in the conductive layer is represented by V, and a total volume of the tin oxide particle doped with phosphorus in the conductive layer is represented by V, the V, the V, and the Vsatisfy the following expressions: 2≦{(V/V)/(V/V)}×100≦25 and 15≦{(V/V)+(V/V)}×100≦45.