| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming device capable of suppressing reduction of a transfer rate even when a resistance value on a device side in a transfer process and a resistance value of a recording medium vary depending on environment; improving a secondary transfer rate in the recessed part of the recording medium even when it has low smoothness; and preventing a leak between members applied with AC. <P>SOLUTION: In the image forming device comprises: a transfer device for holding a rotor supporting a toner image and a recording medium to transfer to a recording medium by electrical action; and a discharge member for recording medium discharge arranged on a downstream side in a direction of recording medium conveyance from a holding range, a transfer member contacting the outer periphery of the rotor is grounded; an alternating voltage having an AC superimposed on a DC which has the same polarity as a toner image and is controlled at constant current is applied to a transfer counter member contacting the inner periphery of the rotor; an AC voltage or an alternating voltage having an AC superimposed on a DC is also applied to the discharge member; frequencies of AC components of an AC voltage applied to the transfer counter member, and an AC voltage or an alternating voltage applied to the discharge member is equalized to adjust a phase shift to four or less half-period. <P>COPYRIGHT: (C)2013,JPO&INPIT |
