Brother HL-2700CN Series, Service Manual, Page: 75 / 377

IV-22
1.3 Paper Transportation System
(1) Outline
This printer employs the automatic paper feeding with the paper tray.
When toner images are formed on the transfer belt through the operations of print
system and transfer system, a paper is fed by the paper feed roller and
transported to the registration roller. The transported paper is further transported
to the transfer, fuser and exit part by the registration roller synchronizing with the
rotation of the transfer belt.
(2) Structure of Paper Transportation System (Refer to Fig.4-24.)
Paper Transportation System consists of following parts.
c
Paper Tray PU: Case to accommodate papers to be
automatically fed.
d
Paper Feed Roller PU: Roller to feed paper one by one, preventing
multi-feed.
e
Registration Roller PU: Roller to transport papers as synchronizing
with the transfer belt.
f
Transfer Roller PU: Component to be built in the paper exit unit,
consisting of the paper guide, registration
roller and transfer roller.
g
Fuser Unit FU: Mechanical part to fuse the toner image with
the heat roller and fix it on the paper.
h
Paper Cover Assy PU
(Paper Exit Unit):
Component to consist of the paper guide and
paper exit roller that exits the fusing-
completed paper.
i
Exit Roller Assy PU: Roller to exit papers from of the printer.