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:
Sep. 22, 2009
Filed:
May. 30, 2008
Hideaki Nagasaka, Sunto-gun, JP;
Kunihiko Sekido, Numazu, JP;
Michiyo Sekiya, Mishima, JP;
Nobumichi Miki, Sunto-gun, JP;
Yosuke Morikawa, Yokohama, JP;
Hideaki Nagasaka, Sunto-gun, JP;
Kunihiko Sekido, Numazu, JP;
Michiyo Sekiya, Mishima, JP;
Nobumichi Miki, Sunto-gun, JP;
Yosuke Morikawa, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electrophotographic photosensitive member includes a support, a charge generation layer containing a charge generating material, and a binder resin, on the support, and a hole transport layer containing a hole transporting material, on the charge generation layer. The charge generation layer contains an acenaphthene compound represented by the following formula: Zand Zeach independently represent an oxygen atom, a ═C(CN)group or a ═N Ph group; and Rand Reach independently represented a hydrogen atom, a halogen atom, a nitro group, a substituted or unsubstituted alkyl group or a substituted or unsubstituted alkoxy group. The acenaphthene compound has the structure represented by the above formula (4) is contained in the charge generation layer in an amount of from 51% by weight to 80% by weight based on the weight of the binder resin in the charge generation layer.