Sheet discharge unit
AssigneeRiso Kagaku Corporation
InventorTakeshi Tsurumaki
Life of this patent
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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.
Claims20
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.
A sheet discharge unit comprising:
- a paper receiving tray;
- a transfer passage through which a sheet of pre-treated paper is transferred to the paper receiving tray along a sheet transfer direction;
- a guide opening disposed on each side of the transfer passage;
- a jump wing disposed in each of the guide openings, each jump wing comprising a unitary body having a plurality of laterally spaced, substantially parallel convex portions each having a longitudinal upstream end and a longitudinal downstream end, the upstream and downstream ends being aligned substantially in a 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.
A sheet discharge unit comprising:
- a paper receiving tray;
- a transfer passage through which a sheet of pre-treated paper is transferred to the paper receiving tray along a sheet transfer direction;
- a plurality of guide openings disposed on each side of the transfer passage;
- a plurality of independently moveable jump wing portions, each corresponding to one of said plurality of guide openings and disposed therein;
- and
- an actuating member for actuating the jump wings between a guide position in which the jump wings respectively protrude upward from the guide openings and a wait position in which the jump wings are respectively retracted into the guide openings.
Dependencies are inferred from the claim text.