| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent images on leading ends or/and trailing ends of transfer materials from being omitted and, at the same time, to decrease occurrences of transfer memory images, in an image forming device in which an interval between the transfer materials is shorter than the circumferential length of a photoreceptor. <P>SOLUTION: When a toner image is transferred to a transfer material O, the image forming device 101 turns on/off a transfer bias power source 55 with prescribed timing by a transfer bias controller 54 in accordance with transfer material type and thickness and the result of the detection of at least internal temperature or humidity of the device. In addition, by switching the magnitude and the polarity, the toner image can be securely transferred to the transfer material under a condition that is free from an occurrence of transfer memory image. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
