| 摘要 |
PROBLEM TO BE SOLVED: To prevent adsorption of an ejected sheet to a stacking surface and of an ejected sheet to a stacked sheet, and also to improve ejecting quality and stacking quality of a sheet, by simple control of an air flow.SOLUTION: A sheet stacking device includes: a sheet stacking tray T for stacking conveyed sheets thereon; a duct F1, a blowing fan F2 and a plurality of movable louvers L for feeding air into a gap between an ejected sheet P2 and a stacked sheet P1 stacked on the sheet stacking tray T; and a CPU for controlling a flowing direction of the air fed by the blowing fan F2 or position where the air flows, to reduce an amount of the air flowing through the gap. The CPU controls an angle of a movable louver L according to an ejection amount of the ejected sheets P2 to the sheet stacking tray T to change the direction and the position. |
