| 摘要 |
<p>PURPOSE:To stack the specified number of sheet sheaves positively on a discharge tray at the time of a staple mode by providing a control means for changing the stacking face height of the discharge tray from the first sheaf to the second sheaf onward at the time of discharging the stapled sheaves of sheets onto the discharge tray. CONSTITUTION:In an aftertreatment device for sheet provided with a stapler for stapling plural sheets, and a vertically movable discharge tray 12 for stacking true stapled sheaves of sheets, it is so controlled that the placing face of the discharge tray 12 is temporarily moved up every discharge of a sheaf of sheets at the time of discharging sheaves of sheets onto a discharge tray 12. The discharge tray 12 thereby stands by always in a high position (a position almost in contact with a drawing roller 7) at the time of discharging a sheaf of sheets, and the hanging and arrival angle theta of a sheaf of sheets are reduced to prevent the generation of peeling when the tip of the sheaf of sheets slips. The discharge tray 12 is lowered almost at the same time as the discharge of the sheaf of sheets, so that the sheaf of sheets can be positively stacked on the discharge tray 12.</p> |
