| 摘要 |
An image forming apparatus includes a first sheet conveying passage that conveys a sheet through an image forming section. A sheet-discharging roller is on an outlet side of the first sheet conveying passage and can rotate in opposite directions. A second sheet conveying passage has an inlet connected to the first sheet conveying passage downstream from the image forming section and an outlet connected to the first sheet conveying passage upstream from the image forming section. A controller controls double-sided printing by causing the sheet-discharging roller to rotate forward to advance the sheet outside the sheet-discharging roller, and then to rotate in reverse to execute a switchback for transporting the sheet to the inlet side of the second sheet conveying passage and then to return the sheet to the upstream of the image forming section. An assisting mechanism adjusts a posture of the sheet to assist the switchback.
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