| 摘要 |
An image forming apparatus has a switch-back conveying portion to convey a sheet conveyed through either a first conveying path or a second conveying path as being switched-back, a mode in which a sheet passed through the first conveying path is conveyed to the second conveying path as being switched-back by the switch-back conveying portion and a mode in which a sheet passed through the second conveying path is conveyed to the first conveying path as being switched-back by the switch-back conveying portion are selectively performed.
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