Electrophotographic apparatus
AssigneeCanon Kabushiki Kaisha
InventorMasahiro Ito
Life of this patent
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Abstract
An electrophotographic apparatus comprises a photosensitive member, exposing means, and cleaning means for cleaning a residual developer from the photosensitive member, which comprises a cleaning brush brought into contact with the photosensitive member. In this case, if a brush density of the cleaning brush is D (number/mm2), and an area of a pixel of an electrostatic image is S (mm2/dot), D×S≧0.06 and D≦200 are satisfied. Thus, an image forming apparatus is provided, in which cleaning stability is improved by uniformly scraping off and dispersing the transfer residual developer from the photosensitive member.
Claims14
An electrophotographic apparatus comprising:
- a photosensitive member which comprises a surface layer formed on a surface thereof, and a photosensitive layer, a sum of a thickness of the photosensitive layer and a thickness of the surface layer being 25 μm or lower;
- exposing means for exposing the photosensitive member in accordance with a digital image signal in order to form an electrostatic image on the photosensitive member;
- developing means for forming a developer image on the photosensitive member by developing the electrostatic image by a developer;
- and
- cleaning means for cleaning a residual developer from the photosensitive member after the developer image is transferred to an image receiving member, which comprises a cleaning brush brought into contact with the photosensitive member,
- wherein if a brush density of the cleaning brush is D (number/mm2), and an area of a pixel of the electrostatic image is S (mm2/dot), D×S≧0.06 and D≦200 are satisfied.
Dependencies are inferred from the claim text.