| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor for forming a good image for an extended time by preventing scratches on the photoreceptor surface that may cause a defective image without depending on a method of increasing mechanical strength, and to provide a process cartridge and an electrophotographic apparatus each having the photoreceptor. SOLUTION: The electrophotographic photoreceptor having a support and a photosensitive layer is characterized in that: a plurality of independent recessed portions are present on the photoreceptor surface, the recessed portions having major axis diameters of 0.1μm to 10μm, minor axis diameters of 0.1μm to 10μm, and distances between the deepest portions and the opening planes of 0.1μm to 10μm; when square areas B each having one side parallel to the rotation direction of the photoreceptor and in a length of 50μm are provided in each of 100 areas A obtained by equally dividing the surface by four in the rotation direction of the photoreceptor and by equally dividing by 25 in a direction perpendicular to the rotation direction of the photoreceptor, and further, when each area B is equally divided by 500 with straight lines parallel to the rotation direction of the photoreceptor, 400 through 499 lines out of the above lines pass the recessed portions in each area B. COPYRIGHT: (C)2007,JPO&INPIT
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