Electrophotography – Image formation – Photoconductive member
Reexamination Certificate
2008-11-26
2010-10-12
Dote, Janis L (Department: 1795)
Electrophotography
Image formation
Photoconductive member
C430S056000, C430S066000
Reexamination Certificate
active
07813675
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°<θ<180° toward the center of the electrophotographic photosensitive member.
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Amamiya Shoji
Ikezue Tatsuya
Mitsui Takahiro
Ogawa Hideki
Oshiro Mayumi
Canon Kabushiki Kaisha
Dote Janis L
Fitzpatrick ,Cella, Harper & Scinto
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