Brother HL-5130 Service Manual page 92

CHAPTER 3 THEORY OF OPERATION
2.2.2 Paper registration
After the paper top position is detected by the regist front actuator, the paper, separated into
individual sheets by the paper pick-up roller, is fed further for a specified time, and the paper
top position reaches the paper feed roller so that the paper skew is adjusted. Then, the
solenoid is turned off, the paper feed roller starts turning, and the paper is fed to the transfer
block in the drum unit.
The regist rear actuator in the path from the feed roller to the transfer roller controls the first
print position on the paper.
2.2.3 Paper eject
After the printing image on the photosensitive drum is transferred onto the paper, the paper is
fed to the fixing unit to fix unfixed toner onto the paper.
Afterwards, the paper is ejected from the fixing unit by the first eject roller in the fixing unit.
The paper eject actuator detects whether the paper is ejected correctly or not.
After the paper exits from the first eject roller, the paper is turned by the rear cover and
ejected face down into the top output tray through the second eject roller. If the rear cover is
open, the paper is ejected face up straight to the printer rear (straight paper path).
Photosensitive drum
Transfer roller
Regist rear
actuator
Paper feed
roller
Rear cover
Regist front
actuator
Fig. 3-33
Second eject roller
First eject roller
Fig. 3-34
3-22
Paper eject actuator