| 摘要 |
PURPOSE:To simplify a power supply circuit in a cleaning system using a memory removing member. CONSTITUTION:The memory removing member 14 is arranged between a transfer device 6 and an electrifier 2 to a photosensitive drum 1. For the transfer device 6, a scolotron type is used. By making a part of corona current flow to a varistor 9 from a grid 6b, a grid electric potential is set. A capacitor 11 is charged through a resistor 10 by the grid electric potential, the charged electric potential is applied to the memory removing member 14. A high voltage power supply 7 is made be ON during the rotation of the photosensitive drum so as to charge the capacitor 11 in advance. Residual toner is dispersed by the memory removing device 14 and developed and cleaned in a developing device 4. |
