| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a charging member capable of uniformly charging a surface of a photosensitive body without using an additional member and without being affected by residual potential. <P>SOLUTION: A conductive elastic layer 72 and a surface layer 73 are provided in this order on a circumference of a conductive base 71. Fine particles 74 in the shape of a spindle, a cylinder or a needle are involved in the surface layer 73 so as to cause irregularities derived from the fine particles 74, and the fine particles 74 are aligned so as to have their major axis direction substantially according with the normal direction of the conductive base 71. From the viewpoint of further improvement of uniform charging properties, the fine particles 74 have a major axis of preferably 15 μm to 20 μm, a minor axis of preferably 3 μm to 6 μm, and an aspect ratio (major axis/minor axis) of preferably 5 or less. Furthermore, the surface layer 73 has ten-point surface roughness Rz of preferably 10 μm to 20 μm, and an average distance Sm between the irregularities is preferably 10 μm to 20 μm. <P>COPYRIGHT: (C)2012,JPO&INPIT |
