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:
Jul. 12, 2016
Filed:
Feb. 26, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Koichi Nakata, Kashiwa, JP;
Shinji Takagi, Yokohama, JP;
Nobuo Kosaka, Gotemba, JP;
Koichi Suzuki, Yokohama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is an electrophotographic photosensitive member excellent in suppression of image deletion and electric potential variation. The surface layer of the electrophotographic photosensitive member comprises a hole transporting substance. The hole transporting substance is one of a compound consisting of a carbon atom and a hydrogen atom, or a compound consisting of a carbon atom, a hydrogen atom, and an oxygen atom. The hole transporting substance comprises a conjugate structure containing 24 or more spcarbon atoms. The conjugate structure comprises a condensed polycyclic structure comprising 12 or more spcarbon atoms. A ratio of a number of spcarbon atoms is 55% or more based on a total number of carbon atoms in the hole transporting substance, and a ratio of a number of spcarbon atoms is 10% or more based on a total number of carbon atoms in the hole transporting substance.