Patent ID: 8177227

Claim:
A sheet ejection device comprising: a sheet ejection tray which is adapted to be loaded with a sheet to be ejected in an ejection direction; a pair of alignment members each of which is configured to align an end position of the ejected sheet in a direction perpendicular to the ejection direction; and a drive device which: (i) sets one of the pair of alignment members to a position so that said one of the pair of alignment members comes in contact with an upper surface of a first sheet loaded on the sheet ejection tray at a plurality of points which are located in a single straight line parallel to the ejection direction, and (ii) drives the other of the pair of alignment members so that the other of the pair of alignment members pushes, in the direction perpendicular to the ejection direction, an end of a second sheet ejected on the first sheet while said one of the pair of alignment members is in contact with the upper surface of the first sheet at the plurality of points.