When the paper feed signal is received by the Bypass Feed Tray, the Bypass Bottom plate is lifted up, and then the Bypass Clutch is turned on to rotate the Bypass Feed Roller.
The friction pad ensures that only the top sheet is fed. After the paper is fed out, the Duplex Exit Clutch is turned on to feed the paper along the same path as is used for feeding paper from the Paper Feed Tray. When the paper fed into the machine activates the Registration Sensor, the Bypass Clutch is turned off. When the toner pattern on the transfer belt is at the correct position, the Registration Clutch is turned on to feed the paper to the Image Transfer Unit.