Sheet discharging device, sheet processing apparatus, image forming system, and sheet discharging method

摘要

A sheet discharging device includes: sheet discharging rollers (6) that receive each of sheets (P) conveyed thereto and discharge the sheets (P) one by one; a shift tray (202) on which the sheets discharged by the sheet discharging rollers (6) are to be stacked; an air blower (400); and a CPU (101). The air blower (400) forms an air layer (AL) between the shift tray (202) and a sheet (P1) when the sheet (P1) is dischraged onto the shift tray (202) by the sheet discharging rollerls (6), or between a sheet (P2) and the sheet (P1) that is already placed on the shift tray (202) when the sheet (P2) is discharged. The CPU (101) controls an air velocity of air to be delivered by the air blower (400) based on sheet information, thereby causing the air layer (AL) to extend to the entire surface of the sheet (P1, P2).