Sheet discharging apparatus and image forming apparatus

Abstract

A sheet discharging apparatus includes a discharging portion, a stacking portion, a moving member configured to move to a first position, a second position, and a third position, a detection portion, and a control portion. In a case where the detection portion detects that the moving member has reached the second position, the control portion controls the discharging portion in a first mode or a second mode. In the second mode, the control portion restricts the discharge of a sheet after a predetermined number of sheets has been discharged to the stacking portion. The control portion is configured to determine the predetermined number of sheets, depending on a type of the sheet discharged by the discharging portion, a length of the sheet in a sheet conveyance direction, and temperature and/or humidity.

1 . A sheet discharging apparatus comprising:
 a discharging portion configured to discharge a sheet;   a stacking portion on which the sheet discharged by the discharging portion is stacked;   a moving member configured to abut against the sheet stacked on the stacking portion and move to a first position, a second position, and a third position that is farther from the first position than the second position is;   a detection portion configured to detect a position of the moving member; and   a control portion configured to control the discharging portion,   wherein the moving member is configured to move from the first position toward the second position and the third position as a height of sheets stacked on the stacking portion increases,   wherein in a case where the detection portion detects that the moving member has reached the second position, the control portion controls the discharging portion in a first mode or a second mode, the first mode being a mode in which the control portion restricts discharge of a sheet performed by the discharging portion, the second mode being a mode in which the control portion allows the discharging portion to continue to discharge sheets even if the moving member is located between the second position and the third position,   wherein in the second mode, the control portion restricts the discharge of a sheet after a predetermined number of sheets has been discharged to the stacking portion by the discharging portion since the detection portion detected that the moving member had reached the second position, and   wherein the control portion is configured to determine the predetermined number of sheets, depending on a type of the sheet discharged by the discharging portion, a length of the sheet in a sheet conveyance direction, and temperature and/or humidity.   
     
     
         2 .- 7 . (canceled)