摘要:
Post-processing apparatus (100) for performing given process subsequently to image forming process by image forming apparatus is disclosed. Post-processing apparatus includes: first ejector (210) which ejects sheet; first tray (310) which temporarily holds sheet; second tray (320) situated downstream of first tray in ejection direction of sheet; a tray driver (324) which moves second tray downwardly from first height position; blower (410) which forms airstream between second tray and lower surface of sheet; and controller (600) which controls blower and tray driver. Controller includes: blower controller (641) which causes blower to blow air over time period in synchronization with first time period from start to end of sheet ejection by first ejector; and tray controller (660) which causes tray driver to move second tray downwardly from first height position after first time period.
摘要:
A sheet processing device (3) includes an exit tray (33) and a sheet alignment mechanism (40). On the exit tray (33), ejected sheets (P) or ejected sheet sheaves (S) subjected to stapling are stacked. When at least a sheet (P) is ejected, the sheet alignment mechanism (40) aligns the sheets (P) in a manner to be in contact with and catch opposite ends of the sheets (P) stacked on the exit tray (33) from a base end side of the exit tray (33). When a sheet sheaf (S) is ejected, the sheet alignment mechanism (40) comes in contact with a plurality of points (A1, A2) on a topmost surface (U) of the sheet shaves (S) stacked on the exit tray (33) to detect a height difference (D) between the plurality of points (A1, A2).