Brother HL-5130 Service Manual page 93

2.2.4 Duplex printing (HL-5150D/5170DN only)
After the paper exits from the second eject roller with the front of sheet printed, the second
eject roller rotates conversely and feeds the paper to the duplex tray, where the paper skew is
adjusted.
Afterwards, the paper is ejected from the duplex tray to the path through the paper feed roller
and the transfer roller to the transfer block in the drum unit again for process of printing on the
back of sheet.
Rear cover
Paper outer guide
Paper guide
First eject roller
Pressure roller
Second eject roller
Second eject roller
Duplex tray
Transfer roller
Fig 3-35
3-23
HL-5130/5140/5150D/5170DN SERVICE MANUAL
Hear roller
Photosensitive drum
Regist rear Regist front sensor lever
sensor lever Paper feed roller
Paper feed pinch
roller