| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the occurrence of parallel stripes in a shaft direction of an electrophotographic photoreceptor in printing caused by that the electrophotographic photoreceptor and an charging roll submissively rotate by vibration or the like when transportation or the like, and charge is accumulated on the surface of the electrophotographic photoreceptor by triboelectrification when peeling both of them generated by such rotation. <P>SOLUTION: The process cartridge includes the electrophotographic photoreceptor 10, the charging roll 12 coming into contact with the surface of the electrophotographic photoreceptor 10 and charging it, a spiral groove 20 formed on the charging roll 12 and coming loose in a rotating direction when forming an image, and a rotation preventing means having spiral groove shape whose shape is fit to that of the spiral groove 20. <P>COPYRIGHT: (C)2009,JPO&INPIT |
