| 摘要 |
PURPOSE: To keep the leakage of transfer charge uniform and to eliminate transfer unevenness by bringing a transfer material into contact with a specified contact member at the time of transferring. CONSTITUTION: This device is constituted of a photoreceptor drum 1 capable of forming an electrostatic latent image, a developing device performing the superposed-development of two or more colors with electrostatically charged toner on the drum 1, and a developing roller 5 for electrostatically transferring a toner image obtained by such development on the transfer material 6 altogether. It is preferable to make the developing roller 5 come into contact with/ leave from the drum 1. At the time of transferring, the transfer material 6 such as paper is brought into contact with the contact member 13 whose volume resistance value is <=10<6>Ω.cm. At least one contact member 13 is grounded. Thus, the charge amount transmitted to both surfaces of the paper 6 and flowing to the ground through the contact member 13 becomes contact, and the transfer unevenness is eliminated. |
