Printing Process - Oki C8800 Maintenance Manual

Oki Data CONFIDENTIAL
2.2

Printing process

The paper fed from Tray 1 or Tray 2 is carried by the paper feed roller, register roller L and
transport roller. When the paper is fed from the MPT, it is carried by the MPT paper feed roller
and register roller U. Then, an unfixed toner image is created on the paper transported onto
the belt sequentially through the electrophotographic process of KYMC. Thereafter, the image
is fixed under heat and pressure as the paper goes through the fuser unit. After the image has
been fixed, the paper is unloaded to the stacker either face-up or face-down stacker, according
to the outputting method selected by opening or closing the face-up stacker.
While the above refers to the one-sided print operation of the printer, its operation in two-sided
print will be explained below.
When two-sided print is conducted, the paper that has passed through the fuser unit follow-
ing first one-sided print is sucked into the Duplex unit by the separator DUP. After entering the
paper reversal transport path, the paper is carried from there to the inside of the Duplex unit
by the inverting operation of the reversal roller. Then, after passed through the Duplex unit by
the transport roller that is located on the transport path inside the Duplex unit, the paper is fed
along the paper feed route of the Duplex unit to eventually merge the same route that comes
from the tray. From here on, the same operation as that of one-sided print of paper fed from the
tray takes place.
Heat roller
MPT paper feed roller
Halogen lamp
Backup roller
Transport belt
Separator DUP
Reversal roller
Register roller U
Belt
Halogen lamp
Transport roller
Register roller L
Paper reversal transport path
Paper feed roller
Subroller
Subroller
Transport roller
Paper feed roller
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43170003TH Rev.2