| 摘要 |
PURPOSE:To prevent the occurrence of the electrified memory of the surface of a body to be electrified when an alternating voltage applied to an electrifying member is off, in an AC electrifying system electrifier, and the degradation of the quality of an output image and the scattering of toner in a machine, caused by the occurrence of the electrified memory of the surface of the body to be electrified when the alternating voltage applied to the electrifying member is off, in an image forming device using the AC electrifying system electrifier. CONSTITUTION:In a contact system electrifier allowing the electrifying member to contact with the body to be electrified or approach it, and applying the alternating voltage to the electrifying member, to execute the electrification processing of the body to be electrified, or the image forming device using the electrifier, when an applied alternating voltage is off, the drop ratio of the peak voltage of one side of the alternating voltage is set <=400V/1 cycle or below, and the voltage is off to fall. |
