Patent ID: 6701841
Filing Date: 2004-03-09
Classification: B65H

Abstract:
A sheet discharge unit comprising:a paper receiving tray; a transfer passage for transferring a sheet of pre-treated paper to the paper receiving tray along a sheet transfer direction; guide openings formed at both sides of the transfer passage; a transfer member located in the transfer passage to impart a force to the sheet of pre-treated paper so as to move the sheet of pre-treated paper in the sheet transfer direction; jump wings respectively disposed in the guide openings comprising a plurality of laterally spaced, substantially parallel convex portions each having a convex upper surface and each having a longitudinal upstream end and a longitudinal downstream end, the upstream and downstream ends being aligned substantially in the sheet transfer direction, ones of the convex portions being arranged adjacent each other in a direction substantially perpendicular to the sheet transfer direction, a concave recessed portion disposed between adjacent ones of said convex portions; and an actuating member for actuating the jump wings between a guide position in which downstream ends of the jump wings respectively protrude upward from the guide openings by a further distance than corresponding upstream ends, and a wait position in which the upstream and downstream ends of the jump wings are respectively retracted into the guide openings.