Brother MFC-J2320 Service Manual page 44

Printing and paper feeding
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Parts Names
Paper pull-in roller
Registration actuator
Paper feed roller
Paper ejection roller
Switchback actuator
Switchback roller
Duplex paper feed roller
MP paper pull-in roller
MP paper detection actuator
Functions
This feeds the recording paper from the paper tray to the
paper feed roller.
After the registration actuator detects the leading edge of the
paper, it pushes the recording paper against the reverse-
rotating paper feed roller, and correct inclination of the paper.
This detect the leading edge of recording paper, controlling
the printing start position.
This detect the leading edge/ending edge of recording paper,
identifying the recording paper size.
This detects paper jamming in the rear.
This reverses the rotation when correcting inclination of the
paper with the paper feed roller and the duplex paper feed roller.
It feeds the recording paper to the printing start position after
correction.
This feeds printed recording paper to the switchback roller.
This detects whether the printed recording papers are ejected.
This detects the ending edge of recording paper after printing
the first side when duplex-printing, adjusting timing to reverse
the switchback roller rotation.
This detects paper jamming in the ejector.
Detect if paper tray is set.
This ejects the recording paper to the ejected paper tray.
During duplex-printing, after feeding some of the recording papers
printed in the first side to the switchback roller, its rotation is
reversed to feed the recording paper to the duplex-printing path.
During duplex-printing, this feeds the recording paper that are
fed in the duplex paper path to the paper feed roller.
After the registration actuator detects the leading edge of the
paper, it pushes the recording paper against the reverse-
rotating paper feed roller, and correct inclination of the paper.
This feeds the recording paper from the MP tray to the paper
feed roller.
After the registration actuator detects the leading edge of the
paper, it pushes the recording paper against the reverse-
rotating paper feed roller, and correct inclination of the paper.
This detects whether the recording paper are set on the MP
tray.
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