Paper Feeding Mechanism - Brother MFC4820C Service Manual

4.2.2 Paper Feeding Mechanism

The paper feeding mechanism consists of the auto sheet feeder (ASF) mechanism and paper
feeding and ejection mechanism. The former is driven by the ASF motor and pulls in the paper;
while the latter is driven by the paper feed motor and registers the leading edge of the pulled-in
paper and feeds and ejects the paper.
The ASF mechanism and the paper feeding and ejection mechanism use an ASF switch and
registration sensor, respectively. For details on these sensors, refer to Section 4.2.4.
Given below is a sectional view of the right side of the machine that shows the path of the paper as
it is fed through the machine.
Paper feeding and ejecting mechanism ASF mechanism
Recording paper
ASF roller unit
Paper feed motor
ASF
(Carriage rail)
(Carriage)
Star wheels
Paper ejection roller
ASF motor
Paper stoppers
(Print head unit)
(Ink cartridges)
Registration sensor actuator
Platen
Paper chute
Paper feed roller
4 -6