| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suppress cleaning unevenness arises in the axial direction of a charging roll 23 in cleaning the surface of the charging roll 23. <P>SOLUTION: In an arrangement where an amount of adhesion is larger in both ends in the axial direction of the charging roll 23 than in the center portion, a winding angle of a cleaning material 66 is made smaller at both the ends of a shaft 64 than at the center portion of the shaft 64. Since cleaning capability is higher in smaller winding angle than in larger winding angle, an extraneous material adhered to the surface of both the ends of the charging roll 23 where the amount of adhesion is large can be removed in a larger amount than the center portion in the axial direction where the amount of adhesion is small. Thereby, cleaning unevenness arises in the axial direction of the charging roll 23 is suppressed in cleaning the surface of the charging roll 23. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
