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
-
Application No.: US12324040Application Date: 2008-11-26
-
Publication No.: US07813675B2Publication Date: 2010-10-12
- Inventor: Kan Tanabe , Yoshihisa Saito , Hideki Ogawa , Shoji Amamiya , Tatsuya Ikezue , Takahiro Mitsui , Mayumi Oshiro , Kumiko Takizawa
- Applicant: Kan Tanabe , Yoshihisa Saito , Hideki Ogawa , Shoji Amamiya , Tatsuya Ikezue , Takahiro Mitsui , Mayumi Oshiro , Kumiko Takizawa
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2007-194726 20070726
- Main IPC: G03G15/00
- IPC: G03G15/00 ; G03G5/00

Abstract:
An electrophotographic photosensitive member is provide which inhibits recovered toner from leaking out of the edge portion at the time of long-term use, and has good durability. Each of at least both edge portions of the surface layer of the electrophotographic photosensitive member has a region in which independent depressed portions are formed at a density of ten or more portions per 100 μm square. An average depth Rdv-A, an average short axis diameter Lpc-A, and an average long axis diameter Rpc-A, of the depressed portions are respectively in specific ranges. When an angle formed between the circumferential direction of the electrophotographic photosensitive member and the long axis of each of the depressed portions is represented by θ, the depressed portions are formed so that the angle θ satisfies the relationship of 90°
Public/Granted literature
- US20090074460A1 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS Public/Granted day:2009-03-19
Information query