| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a charging roller capable of suppressing a spot image and a stripe image, in order to achieve a high speed, high picture quality and high durability of an electrophotographic apparatus. <P>SOLUTION: In the charging roller which includes a first conductive elastic layer 4 and a second conductive elastic layer 5 that is stacked on the first conductive elastic layer 4, the particle size of hollow particles 6 which the first conductive elastic layer 4 has is larger than that of hollow particles 7 that the second conductive elastic layer 5 has, and impact resilience of the second conductive elastic layer 5 is larger than that of the first conductive elastic layer 4 by the particle size difference therebetween. <P>COPYRIGHT: (C)2012,JPO&INPIT |
