Brother HL-4570CDW - Operation of each Part

2-6
Confidential
2.3 Operation of Each Part
Part name Operation
T1 paper pick-up roller Feed the paper from the paper tray 1.
T1 separation roller,
T1 separation pad
Separate into single sheet from the paper tray 1.
T1 paper edge actuator Detect whether or not the paper tray 1 is installed.
Detect whether or not paper is loaded.
Detect the paper jam of front part.
Registration front actuator Detect the front edge of paper and control the drive of the
registration roller.
Detect the paper jam of front part.
Registration roller When the front edge of the paper hit the stopped
registration roller and the inclination of the paper is
corrected.
After correction is made, the registration roller rotates to
feed the paper to the belt unit.
Registration rear actuator Detect the passage of paper and adjust the starting
position for writing on a sheet of paper.
Detect the paper jam of center part.
Detect the rear edge of paper and identify the paper size.
Belt unit Feed the paper to the drum unit for each color and transfer
toner on the paper.
Heat roller, Pressure roller Fuse and fix the toner transferred on paper by heat and
pressure, and feed the paper to the paper eject roller 1.
Paper eject actuator Detect whether or not paper is ejected from the fuser unit.
In the case of the duplex printing, detect the rear edge of
paper and adjust the timing of the paper eject roller 2 and 3
switching.
Paper eject roller 1 Feed the paper ejected from the fuser unit to the paper
eject roller 2.
Paper eject roller 2 Feed the paper to the paper eject roller 3.
In the case of the duplex printing, after the paper is fed
from the eject roller 3 up to a certain point with the front of
the sheet printed, the eject roller 3 rotates conversely and
feeds the paper to the duplex tray.
Paper eject roller 3 Eject the paper to the face-down output tray.
In the case of the duplex printing, after the paper is fed
from the eject roller 3 up to a certain point with the front of
the sheet printed, the eject roller 3 rotates conversely and
feeds the paper to the duplex tray.
DX feed roller Feed the paper passed in the duplex tray to the registration
roller.
MP paper pick-up roller Feed the paper from the MP tray.
MP separation roller,
MP separation pad
Separate into single sheet from the MP tray.
MP paper empty actuator Detect whether paper is loaded in the MP tray.