Abstract: A sheet discharge unit has a transfer passage 3 for transferring a sheet of printed paper 2 toward a sheet receiving tray 20, and a pair of left and right jump wings 11, 11 located at both sides of the transfer passage 3 and moveable between a guide position in which the jump wings protrude upward from a bottom wall of the transfer passage and await position in which the jump wings are retracted below the bottom wall. In one embodiment, each of the jump wings 11, 11 comprises divided wing components laterally spaced in a direction S perpendicular to a sheet transfer direction T. In an alternative embodiment, each of the jump wings comprises a unitary body having a plurality of convex segments and a plurality of concave recesses which are alternately located in the direction S.

Abstract: A paper discharge base is applied with a sponge sheet as a damping plate of an impact wall. A protection sheet is pasted on a surface of the sponge sheet. When the damping plate is impacted by a print sheet, the impact force is transmitted from the protection sheet to the sponge sheet and is damped by the sponge sheet. Further, the sponge sheet is protected by the protection sheet and therefore, the sponge sheet is not destructed by the impact of the print sheet.

Abstract: A sheet discharge unit has a transfer passage 3 for transferring a sheet of printed paper 2 toward a sheet receiving tray 20, and a pair of left and right jump wings 11,11 located at both sides of the transfer passage 3 and moveable between a guide position in which the jump wings protrude upward from a bottom wall of the transfer passage and await position in which the jump wings are retracted below the bottom wall. In one embodiment, each of the jump wings 11,11 comprises divided wing components laterally spaced in a direction S perpendicular to a sheet transfer direction T. In an alternative embodiment, each of the jump wings comprises a unitary body having a plurality of convex segments and a plurality of concave recesses which are alternately located in the direction S.

Abstract: A paper discharge base 10 is applied with a sponge sheet 84 as a damping plate 78 of an impact wall 70 provided at a paper discharge base 10. A protection sheet 16 is pasted on a surface of the sponge sheet 84. When the damping plate 78 is impacted by print sheet P, the impact force is transmitted from the protection sheet 86 to the sponge sheet 84 and is damped by the sponge sheet 84. Further, the sponge sheet 84 is protected by the protection sheet 86 and therefore, the sponge sheet 84 is not destructed by impact of the print sheet P.