| 摘要 |
An image forming apparatus is provide which includes an ADU that can sustain productivity per unit of time, without controlling the operation of registration rollers at fixed intervals determined by CPM that leads to temporary stopping of paper. During non-stacked circulatory conveyance for forming images on both sides of a sheet of paper, the position or the timing is corrected at which the paper is accelerated and/or decelerated in a circulatory conveyance path, whereby the image forming apparatus does not control the operation of registration rollers at fixed intervals determined by CPM when forming another image on a back side of the paper.
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