Sheet discharging apparatus, and sheet post-processing apparatus and image forming apparatus provided therewith

A sheet discharging apparatus comprising:

• a sheet discharge port through which a sheet is discharged;
• a discharging member disposed at the sheet discharge port, the discharging member conveying the sheet in a discharge direction;
• a sheet discharge tray disposed downstream of the sheet discharge port with respect to the discharge direction, the sheet discharge tray having stacked thereon the sheet discharged from the sheet discharge port;
• and
• a blowing mechanism that blows a stream of air to the sheet discharged from the sheet discharge port,
• wherein
• the blowing mechanism has:
• a pair of blowing ports through which the stream of air is blown from upward to opposite end parts, along a width direction orthogonal to the discharge direction of the sheet, of the sheet discharged from the sheet discharge port;
• and
• a blowing device coupled to the blowing ports, the blowing device producing the stream of air
• a blowing position of the stream of air with respect to the sheet can be adjusted according to a size of the sheet along the width direction,
• further comprising:
• a swinging mechanism that swings the blowing ports about a swing axis parallel to the discharge direction,
• wherein
• the blowing position is adjusted by changing an angle of the blowing ports by use of the swinging mechanism.