PURPOSE: To provide a device in which a discharge sheet is conveyed over a sheet discharging and containing table to a given position through vibration, horizontally produced by a vibration producing means, to align the sheet thereat.

CONSTITUTION: A discharge sheet 15, duplicated within a duplicator body 11, is conveyed with the rotation of a sheet discharge roller in a manner to be pressed between the nip formed by sheet discharge rollers, and is discharged through a sheet discharge port onto a vibrating plate 19 of a sheet discharging and containing table 17. In which case, since driving cams 20a and 20b, turned togetherwith sheet discharge rollers 14, are brought into contact with tongue pieces 19a and 19b, the vibrating plate 19 is horizontally vibrated in a manner shown by a reference letter (c). Thus, the discharge sheet 15 on the vibrating plate 19 is similarily horizontally vibrated through horizontal vibration of the vibrating plate 19, and such vibration results in movement over the sheet discharging and containing table 17 to a given position.