| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus for reducing image defects, such as transfer defect, even if using a feeding device adopting the separating and feeding method of blowing air. SOLUTION: The image forming apparatus includes an image carrier which carries a toner image; a transfer means which transfers the toner image on the image carrier to a transfer portion, when a transfer voltage is applied; a recording material feeding unit which includes a stacking portion, where recording materials are stacked and an air blowing device for blowing air to the recording material stacked in the stacking portion, and feeds the recording material to the transfer portion; and a transfer bias control portion which controls the transfer bias, according to at least one of air-received time per one sheet among the air blowing unit, air pressure and air temperature. COPYRIGHT: (C)2008,JPO&INPIT
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