| 摘要 |
In an embodiment, a post-processing apparatus includes: a stacking tray; an upward and downward driving unit; a binding unit; and an upward and downward driving control unit. The upward and downward driving unit drives the stacking tray in vertical direction. The binding unit performs binding on recording media on the stacking tray. The upward and downward driving control unit controls such that: descent of the stacking tray is performed before a leading edge of a first sheet among the recording media on which the binding is to be performed reaches a position on the stacking tray; and after the leading edge of the first sheet is positioned on the stacking tray, ascent of the stacking tray is performed before a leading edge of a second sheet among the recording media reaches a position on the stacking tray.
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