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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.:

US 9726992 B1

PDFFull Text
Date of Patent:
Aug. 08, 2017

Filed:

Jan. 12, 2016

Electrophotographic photosensitive member, manufacturing method of electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventors:

Kazuko Sakuma, Suntou-gun, JP;

Yuka Ishiduka, Suntou-gun, JP;

Atsushi Okuda, Yokohama, JP;

Kazunori Noguchi, Suntou-gun, JP;

Yuki Yamamoto, Tokyo, JP;

Atsushi Fujii, Yokohama, JP;

Akihiro Maruyama, Mishima, JP;

Nobuhiro Nakamura, Numazu, JP;

Assignee:

CANON KABUSHIKI KAISHA, Tokyo, JP;

Attorney:

Fitzpatrick, Cella, Harper & Scinto

Primary Examiner:

Hoa V Le

Int. Cl.
CPC ...
G03G 5/14 (2006.01); G03G 5/043 (2006.01);
U.S. Cl.
CPC ...
G03G 5/0436 (2013.01);
Abstract

An electrophotographic photosensitive member comprises a support, an undercoat layer, a charge generation layer and a hole transporting layer disposed in this order. The undercoat layer contains silica particles and a polymer of a composition including an electron transporting material having a polar group selected from the group consisting of a hydroxy group, a thiol group, an amino group, a carboxy group and a methoxy group, and a cross-linking agent. The content of the electron transporting material in the composition is 30 to 70 mass % relative to the total mass of the composition and the content of the silica particles in the undercoat layer is 1 to 30 mass % relative to the total mass of the electron transporting material.

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Sakuma, Kazuko. (2017). Electrophotographic photosensitive member, manufacturing method of electrophotographic photosensitive member, process cartridge and electrophotographic apparatus (U.S. Patent No. 9726992). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9726992

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