The machine uses the Paper Exit/Reverse/Duplex method, where switching of the Duplex Junction Gate and forward and reverse control of the Paper Exit/Reverse Roller allow the sheet to switch back.
In duplex printing, the front end of the sheet with the first side printed is pulled into the Paper Exit/Reverse Roller when the Duplex Junction Gate is switched, and the Paper Exit/Reverse Roller rotates in reverse. After the rear end of the sheet passes through the Paper Exit Sensor, the Duplex Junction Gate returns to its original position before the sheet is completely discharged and the rotation direction of the Paper Exit/Reverse Roller switches back to normal. The sheet is then sent to the Duplex Transport path.
Next, after the second side is printed, the sheet printed on two sides is discharged into the Paper Exit Tray.