Patent ID: 7922435

Claim:
A sheet collecting device comprising: a substantially horizontal stacking tray on which sheets are placed; sheet discharging roller means for transferring sheets to the stacking tray; abutment regulating means, comprising an abutment regulating member, for regulating a leading end or a trailing end of the sheets on the stacking tray in a conveying direction; and aligning means for aligning the sheets relative to the abutment regulating means, wherein the stacking tray comprises a tray base supported by an apparatus frame, and a plate member disposed on the tray base for placing and supporting at least some of the sheets, the plate member being supported on a top surface of the tray base so as to be movable toward the abutment regulating member, biasing means being provided between the plate member and the tray base to bias the plate member toward the abutment regulating member.