Photosensitive member and image forming apparatus having the same
AssigneeCanon Kabushiki Kaisha
InventorsKunimasa Kawamura, Koji Yamazaki, Toshiyuki Ehara, Masaya Kawada, Tetsuya Karaki, Hironori Owaki
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Abstract
To provide an amorphous Si photosensitive member and an image forming apparatus which form favorable images by preventing toner adhesion at a cleaning time. A photoconductive layer 102 containing amorphous Si is formed on an electrically conductive substrate 101 so that a surface of a photosensitive member has an average inclination Δa within a range of 0.12 to 1.0, more preferably 0.15 to 0.8 within a range of 10 μm×10 μm, and an electrically conductive substrate has surface roughness Ra within the range of 10 μm×10 μm is lower than 9 nm, preferably lower than 6 nm.
Claims7
An image forming apparatus comprising:
- a photosensitive member composed by consecutively laminating at least a photoconductive layer containing amorphous Si and an abraded surface protective layer on an electrically conductive substrate;
- a charger for charging said photosensitive member;
- an exposing device for forming an electrostatic latent image on said photosensitive member which is charged;
- and
- a developing device for visualizing said electrostatic latent image with a developer,
- wherein an average inclination Δa within a range of 10 μm×10 μm of the surface of said photosensitive member is within a range of 0.12 to 1.0 by abrading the surface of the photosensitive member,
- wherein said average inclination Δa is calculated from three dimensional forms measured with an atomic force microscope,
- wherein said developer used in said developing device contains a toner and charging acceleration particles having electrical conductivity, and
- wherein said charger is an electrically conductive elastic contact charging roller comprising a medium resistance layer of rubber or foaming material on a core metal as a flexible member, and the medium resistance layer having a resistance from 1×104 to 1×107 Ω.
Dependencies are inferred from the claim text.