Movable tray drive control device and movable tray drive control method

A movable tray drive control device comprising:

• a drive control unit which drive-controls a movable tray on which a sheet discharged from a predetermined sheet discharge port is stacked, in such a manner that the movable tray sequentially descends according to a sheet discharge operation;
• a determination unit which determines whether the movable tray is lowered to a target position or not, when the movable tray is drive-controlled by the drive control unit in such a manner that the movable tray is lowered to the target position;
• and
• a fullness notification unit which gives a notification that the movable tray is full when it is determined by the determination unit that the movable tray cannot be lowered to the target position.

A movable tray drive control method in a movable tray drive control device which drive-controls a movable tray on which a sheet discharged from a predetermined sheet discharge port is stacked, in such a manner that the movable tray sequentially descends according to a sheet discharge operation, the method comprising:

• acquiring, in predetermined timing, arrival position information indicating an actual arrival position of the movable tray when the movable tray is drive-controlled using a predetermined lower limit position as a target position;
• setting a full position in the sheet stacking, of the movable tray, on the basis of the acquired arrival position information;
• and
• giving a notification that the movable tray is full according to the arrival of the movable tray at the full position.