Brother MFC-J3520 Service Manual page 41

Printing and paper feeding
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Names
T1 paper pull-in roller
T2 paper pull-in roller
Registration actuator
Paper feed roller
Paper ejection roller
Switchback actuator
Switchback roller
Duplex paper feed roller
This feeds recording paper from the paper tray 1.
This feeds recording paper from the lower tray.
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.
The leading edge of recording page hits the reversed paper
feed roller, correcting inclination of the paper. After the
correction, the paper feed roller rotates, feeding the paper to
printing start position.
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 detect the leading edge/ending edge of recording paper
when duplex-printing, identifying the recording paper size.
This detects whether the recording papers are fed from the
switchback roller to the duplex-printing path.
This detects paper jamming in the ejector.
Detect if paper tray 1 is set.
This ejects the recording paper to the output 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.
2-7
Functions
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