| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem on uneven image density in a digital copying machine. SOLUTION: The photoreceptor 1 is provided with a photosensitive layer 3 on the circumferential surface of a substrate drum 2, and a large number of linear grooves M each having a triangular section in the circumferential direction on the surface of the substrate drum 2, and is used for a digital copying machine having each groove M has an average space Sm between each groove M of 5 to 30 μm and an arithmetic average roughness of 0.05 to 0.125 μm and angles forming the peaks and the bottoms of the grooves are 165 deg.-177 deg.. |
