Sheet ejecting mechanism with contact member and advance descending of tray to prevent direct return of contact member

摘要

A sheet ejecting mechanism is provided with a sheet ejecting sensor which detects a sheet to be ejected onto an offset tray and an upper-surface position-regulating section which regulates the position of the upper surface of the sheets in accordance with the position of an arm which is in contact with the upper surface of the sheets on the offset tray. When the sheet ejecting sensor detects a sheet to be ejected, a CPU of the upper-surface position-regulating section turns on a solenoid so as to remove a contact between an arm and the upper surface of the sheets. Meanwhile, when the sheet ejecting sensor detects no sheet to be ejected, the CPU turns off the solenoid. With this operation, the arm is allowed to come into contact with the upper surface of the sheets so as to regulate the position of the upper surface of the sheets.