Image forming apparatus and sheet discharging device

A sheet discharging device comprising:

• a discharging portion configured to discharge a sheet;
• a stacking portion configured to stack the sheet discharged by the discharging portion;
• a first moving unit including a contact portion movable to a stand-by position and a detecting position and including a pressed portion;
• a detecting portion configured to detect a position of the contact portion;
• a second moving unit including a pressing portion and movable to a first position and a second position;
• an actuator configured to drive the second moving unit;
• and
• a controller configured to control the actuator and the discharging portion,
• wherein the contact portion is positioned in the detecting position in a case that the contact portion contacts the sheet, stacked on the stacking portion, in a position higher than a predetermined position, and
• wherein the controller executes
• (i) in a case that detection that the contact portion is positioned in the detecting position is made by the detecting portion, first processing for moving the second moving unit from the first position to the second position so that the pressing portion presses the pressed portion so as to urge the contact portion from the detecting position toward the stand-by position, and
• (ii) second processing for permitting discharge of the sheet by the discharging portion in a case that detection that the contact portion is moved from the detecting position toward the stand-by position after the first processing is made by the detecting portion, and for restricting the discharge of the sheet by the discharging portion in a case that detection that the contact portion is maintained in the detecting position even after the first processing is made by the detecting portion.

An image forming apparatus comprising:

• an image forming portion configured to form an image on a sheet;
• a discharging portion configured to discharge the sheet on which the image is formed by an image forming portion;
• a stacking portion configured to stack the sheet discharged by the discharging portion;
• a first moving unit including a contact portion movable to a stand-by position and a detecting position and including a pressed portion;
• a detecting portion configured to detect a position of the contact portion;
• a second moving unit including a pressing portion and movable to a first position and a second position;
• an actuator configured to drive the second moving unit;
• and
• a controller configured to control the actuator and the discharging portion,
• wherein the contact portion is positioned in the detecting position in a case that the contact portion contacts the sheet, stacked on the stacking portion, in a position higher than a predetermined position, and
• wherein the controller executes
• in a case that detection that the contact portion is positioned in the detecting position is made by the detecting portion, first processing for moving the second moving unit from the first position to the second position so that the pressing portion presses the pressed portion so as to urge the contact portion from the detecting position toward the stand-by position, and
• second processing for permitting discharge of the sheet by the discharging portion in a case that detection that the contact portion is moved from the detecting position toward the stand by position after the first processing is made by the detecting portion, and for restricting the discharge of the sheet by the discharging portion in a case that detection that the contact portion is maintained in the detecting position even after the first processing is made by the detecting portion.