| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain an image forming apparatus capable of effectively preventing a discharge phenomenon in a transfer part, and also capable of successfully conveying paper to the transfer part, regardless of paper type, e.g., regular paper or cardboard. Ž<P>SOLUTION: The image forming apparatus is configured to form toner images on juxtaposed photoreceptor drums 41, hold the toner images on an endless transfer conveying belt 61, and then, transfer the toner images onto a transfer material conveyed in one direction. Each of a plurality of transfer rollers 45 for applying a transfer voltage from the inside of the transfer conveying belt 61 to the transfer material P is made movable between a first position A and a second position B, the first position A forming a transfer nip on the upstream side of a position where the transfer roller 45 comes in press contact with the inner surface of the transfer conveying belt 61 so as to bring the transfer conveying belt 61 in contact with the photoreceptor drum 41 in the moving direction C of the belt 61, the second position B forming a transfer nip only near the position where the transfer roller 45 makes the transfer conveying belt 61 to abut on the photoreceptor drum 41. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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