| 摘要 |
PURPOSE:To perform transfer stably for a long time with silent workability by supporting a conductive roller pressing on an image carrier by a bearing made of conductive resin. CONSTITUTION:A conductive transfer roller 3 is brought into press-contact with a cylindrical photosensitive body 1 which has an axial line in the direction perpendicular to the sheet surface and rotates in the direction of an arrow A. The bearing 7 is composed of conductive resin of 10 to 10<4>OMEGAcm volume resistance, carbon fiber filling resin of 2X10<2> volume resistance, for instance. A transfer bias caused by a power source 6 is impressed on a transfer roller 3 through a spring 5 and the bearing 7. Consequently, the transfer roller 2 is stably pressed for a long time, and a transfer bias is stably impressed thereto for a long time. Thus, the inexpensive device with less noisy and high durability can be obtained. |
