| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of preventing, by a simple means, toner from sticking to a transfer rotary body when a toner image formed on an image carrier is transferred to a transfer material. <P>SOLUTION: In order to transfer a toner image formed on the image carrier to the transfer material, a first electric field is generated in a section where the transfer material is present between the image carrier and the transfer rotary body. The section where the transfer material is not present between the image carrier and the transfer rotary body has a first period during which the first electric field having a polarity that is the reverse of the polarity of electrostatically charged toner and a second period during which a second electric field having a polarity that is the same as the polarity of the electrostatically charged toner is generated. The first period is shorter than the time required for the transfer rotary body to make one rotation, and different timing is used for a different transfer material. <P>COPYRIGHT: (C)2004,JPO |
