Invention Grant
- Patent Title: Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
- Patent Title (中): 电子照相感光构件,处理盒和电子照相设备
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Application No.: US12179152Application Date: 2008-07-24
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Publication No.: US07655370B2Publication Date: 2010-02-02
- Inventor: Wataru Kitamura , Hidetoshi Hirano , Atsushi Okuda , Harunobu Ogaki
- Applicant: Wataru Kitamura , Hidetoshi Hirano , Atsushi Okuda , Harunobu Ogaki
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2007-080967 20070327
- Main IPC: G03G15/00
- IPC: G03G15/00

Abstract:
Provided is an electrophotographic photosensitive member in which friction memory does not easily occur, and a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member. The electrophotographic photosensitive member having a photosensitive layer has a surface layer having a plurality of depressed portions which are independent from one another, where the minor axis diameter of the depressed portions is Rpc and the depth indicating the distance between the innermost part of a depressed portion and the opening surface thereof is Rdv, the depressed portions have a ratio of depth to minor axis diameter (Rdv/Rpc) on a surface of the photosensitive member of 1.0 or less, and the photosensitive layer has a charge transporting material with an ionization potential of 4.5 eV or more and 5.3 eV or less.
Public/Granted literature
- US20080304864A1 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS Public/Granted day:2008-12-11
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