Patent ID: 9708141
Date: 2017-07-18
CPC Classifications: B65H

Claim:
1. A sheet transport device comprising: a first tray having a sheet receiving area on which sheets ejected in a first direction from an ejector are placed, wherein at least a part of the first tray is movable up and down; a second tray being positioned in a second direction with respect to the first tray, the second direction intersecting the first direction; a transporter configured to cause a pushing member to move back and forth between a first position and a second position each at one side of the sheet receiving area along the second direction, the second position closer to the second tray than the first position, wherein when a first sheet set composed of a predetermined number of sheets is ejected onto the first tray, the transporter transports the first sheet set to the second tray by putting the pushing member in contact with an end of the first sheet set facing the first position and causing the pushing member to move from the first position to the second position; and a direction changer configured to cause a guide member to guide, in a second sheet set, at least a sheet ejected while the pushing member is moving across the sheet receiving area and to change a direction in which the sheet travels to an upward direction over the pushing member by putting the guide member in a predetermined angle with respect to a horizontal direction, the second sheet set ejected subsequent to the first sheet set and being composed of sheets of the predetermined number; wherein the first tray is switchable between a first state and a second state, wherein in the first state, the first tray is inclined with an end portion thereof that is upstream in the first direction lower than an end portion thereof that is downstream in the first direction, and in the second state, the end portion that is upstream in the first direction is higher than in the first state, the transporter causes the pushing member to push the first sheet set towards the second tray when the first tray is in the second state, and the predetermined angle of the guide member is set so that, when the first tray is in the second state, the sheet does not collide with the pushing member moving across the sheet receiving area.