Electrophotographic photosensitive member, method for manufacturing electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
First Claim
1. A cylindrical electrophotographic photosensitive member comprising:
- a cylindrical support and an organic photosensitive layer provided on the cylindrical support, wherein a peripheral surface of the electrophotographic photosensitive member has a plurality of dimple-shaped concave recesses, a 10-point average roughness Rzjis (A) as measured along the circumference of the peripheral surface of the electrophotographic photosensitive member is 0.3 to 2.5 μ
m, a 10-point average roughness Rzjis (B) as measured along the generating line of the peripheral surface of the electrophotographic photosensitive member is 0.3 to 2.5 μ
m, a mean spacing of profile irregularities, RSm (C), as measured along the circumference of the peripheral surface of the electrophotographic photosensitive member is 5 to 120 μ
m, a mean spacing of profile irregularities, RSm (D), as measured along the generating line of the electrophotographic photosensitive member is 5 to 120 μ
m, and the value of a ratio (D/C) of the mean spacing of profile irregularities RSm (D) to the mean spacing of profile irregularities RSm (C) is 0.5 to 1.5.
1 Assignment
0 Petitions
Accused Products
Abstract
An electrophotographic photosensitive member hard to cause the problem of chatter and wear-out of the cleaning blade and the problem of a rubbing memory, and both a process cartridge and an electrophotographic apparatus having the photosensitive member are provided. The peripheral surface of the photosensitive member has a plurality of dimple-shaped concaves, a 10-point average roughness Rzjis (A) as measured by sweeping along the circumference of the peripheral surface of the photosensitive member is 0.3 to 2.5 μm, a 10-point average roughness Rzjis (B) as measured by sweeping along the generating line of the peripheral surface of the photosensitive member is 0.3 to 2.5 μm, a mean spacing of profile irregularities, RSm (C), as measured by sweeping along the circumference of the peripheral surface of the photosensitive member is 5 to 120 μm, a mean spacing of profile irregularities, RSm (D), as measured by sweeping along the generating line of the photosensitive member is 5 to 120 μm, and the value of a ratio (D/C) of the mean spacing of profile irregularities RSm (D) to the mean spacing of profile irregularities RSm (C) is 0.5 to 1.5.
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Citations
17 Claims
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1. A cylindrical electrophotographic photosensitive member comprising:
- a cylindrical support and an organic photosensitive layer provided on the cylindrical support,
wherein a peripheral surface of the electrophotographic photosensitive member has a plurality of dimple-shaped concave recesses, a 10-point average roughness Rzjis (A) as measured along the circumference of the peripheral surface of the electrophotographic photosensitive member is 0.3 to 2.5 μ
m, a 10-point average roughness Rzjis (B) as measured along the generating line of the peripheral surface of the electrophotographic photosensitive member is 0.3 to 2.5 μ
m, a mean spacing of profile irregularities, RSm (C), as measured along the circumference of the peripheral surface of the electrophotographic photosensitive member is 5 to 120 μ
m, a mean spacing of profile irregularities, RSm (D), as measured along the generating line of the electrophotographic photosensitive member is 5 to 120 μ
m, and the value of a ratio (D/C) of the mean spacing of profile irregularities RSm (D) to the mean spacing of profile irregularities RSm (C) is 0.5 to 1.5. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- a cylindrical support and an organic photosensitive layer provided on the cylindrical support,
Specification