| 摘要 |
A sheet post-processing apparatus includes a saddle tray on which are stacked bundles of sheets having undergone center folding processing and a movable tray that ascends and descends while sheets having undergone post-processing other than center folding are stacked thereon. The saddle tray is coupled to the movable tray and a mechanism to allow the saddle tray to ascend and descend in association with the movable tray is provided. The movable tray is driven to a lower position before the bundles of sheets are discharged for the bundles of sheets to be stacked on the saddle tray. After the bundles of sheets are discharged, the movable tray is driven to an upper position for the stacking portion of the saddle tray to standby at a high position.
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