| 摘要 |
An image forming apparatus transfers a toner image on a recording medium in a transfer unit and fixes the toner image on the recording medium in a fixing unit. The image forming apparatus performs duplex image formation in a first mode and a second mode. The first mode is a mode in which a toner image is transferred and fixed on a second side of a recording medium after a toner image is transferred and fixed on a first side thereof. The second mode is a mode in which, after a toner image is transferred and fixed on a first side of a recording medium fed at first, a second side of the recording medium is subjected to fixing without transferring thereon a toner image.
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