22 2-1412-141Technology > Pickup / Feed System > Duplex Unit > Basic OperationTechnology > Pickup / Feed System > Duplex Unit > Basic OperationDuplex Unit■ Basic Operation1) The Reverse Upper Flapper Solenoid (SL5) is turned OFF to switch the feeding path to theReverse Assembly side.2) When the paper’s trailing edge passes through the Fixing Roller, rotating speed of theReverse Motor (M14) is increased (duplex pull-in speed) to make the paper stopped at theduplex reverse position.3) The Reverse Motor is driven by the duplex pull-in speed to feed the paper to the DuplexAssembly (the flapper feeds the paper to the Duplex Assembly). Then, the Duplex LeftSensor (P66) detects the paper's leading edge, and the paper is fed for a specified distanceto stop at the position of Duplex Left Roller.SL5M14M19Reverse LowerRollerDuplex reversestandby pointDuplex Left Sensor(PS66)Duplex reversepointDuplex FlapperReverse Upper FlapperReverse UpperRollerReverse VerticalPath Sensor(PS65)F-2-18550msReverse Motor(M14)Reverse VerticalPath Sensor(PS65)Duplex Left Sensor(PS66)Reverse UpperFlapper Solenoid(SL5)Duplex reverse speedDuplex reverse speed60 mm before Fixing Roller(Based on Registration Sensor )20 mm before ReverseVertical Path SensorDuplex Left Roller(Based on Duplex Left Sensor)Process speed StopStop20 mm after Fixing Roller(Based on Reverse Vertical Path Sensor)Model ImageRUNNER ADVANCE 6075/6065/6055 [mm/s]PPM 75 65 55Process speed 350 290Duplex feed speed 500Duplex reserve speed 500Duplex delivery spped 500F-2-186T-2-82