Patent ID: 8857814

Claim:
A sheet ejection device in which a plurality of sheets ejected in a sheet ejecting direction is sequentially dropped from an ejection position and the plurality of sheets are stacked on a sheet output tray, the device comprising: a detector that detects a sheet drop height position set between the ejection position and a sheet on an uppermost layer of the plurality of sheets stacked on the sheet output tray; a sheet output tray elevation portion that elevates up/down the sheet output tray in accordance with a stacked amount of the plurality of sheets so that the sheet drop height position becomes substantially constant on the basis of a detection result from the detector; a sheet abutting member that has a non-conductive sheet regulating surface that abuts on at least one of the front end portion and a rear end portion of each sheet on the sheet output tray to regulate movement of the one end portion; and a conductive member that is attached only at a position lower than the sheet drop height position and in the vicinity of the sheet abutting member in the grounded state in the sheet width direction, and attracts at least one of a front end portion and a rear end portion of the sheet on the uppermost layer of the plurality of sheets stacked on the sheet output tray, up to the sheet drop height position on the sheet regulating surface of the sheet abutting member.