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98 MFP unit explanation ENWW
through the conveyance section, the
conveyance suction fan is used to
provide suction for the paper.
*5 Reverse/exit paper path selection
The reverse/exit selection gate in the
fuser unit determines whether the paper
is to be ejected straight or reversed and
ejected. The paper gate is operated by
the reverse gate SD (SD7) installed in
the ADU.
Because paper is reversed in the
reverse/exit section in the ADU, the
reverse/exit section is provided with a
reverse/exit gate to switch between the
forward and backward paper
conveyance paths. This gate has no
drive mechanism and it is opened by the
rigidity of the paper.
a Reverse/exit operation
Normally, the reverse/exit selection
gate opens when the reverse gate SD
(SD7) is turned off. The paper fed by
the exit roller in the fuser unit is fed,
through the path under the
reverse/exit selection gate, to the
reverse/exit section in the ADU by the
decurler roller. Normally, the
reverse/exit gate in the reverse/exit
section is closed. This gate is opened
by the rigidity of the fed paper,
allowing the paper to be fed to the
reverse/exit roller, ADU gate, and
ADU reverse roller sequentially.
Normally, the ADU gate is closed and
it has no drive mechanism; it is
opened by the rigidity of paper.
When the paper reverse PS (PS42)
detects the trailing edge of paper and
consequently turns off, the
reverse/exit roller and ADU reverse
roller start rotating in the opposite
direction, feeding the paper back
toward the fuser unit. However, since
the reverse/exit gate is closed, the
paper is fed to the MFP exit roller via
the path outside this gate. Thus, the
paper is ejected with the print side
down.
Conveyance suction fan (FM3)
Suction holes
Conveyance
section
Duct