| 摘要 |
PROBLEM TO BE SOLVED: To realize stable transfer performance to a transfer material even when a charged device having low charging ability is used on the assumption that a contact transfer means is used. SOLUTION: In an image forming device having a contact transfer means 6 in which a developing image on an image supporting body 1 is transferred by interposing a transfer material 5 between the image supporting body 1 and the contact transfer means 6, an electricity removing means 7 is arranged in close vicinity to the image supporting body 1 on the rear side in the carrying direction of the transfer material 5 of the contact transfer means 6, the electricity removing means 7 has a number of needle electrodes arranged along the axial direction of the image supporting body 1, and a bias applying means which applies bias to the electricity removing means 7 at the specified time during passing of the transfer material 5 is arranged. The bias applying time is varied with a time variably setting means 10, and a transfer condition is optimized according to an environmental condition. |
