44346001TH Rev.1
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Oki Data CONFIDENTIAL
2. DESCRIPTION OF OPERATION
2.2 Printing process
Paper fed from Tray 1, Tray 2 or Tray 3 is carried by the paper feed roller, the registration roller L,
and the transport roller. When paper is fed from the MPT, it is carried by the MPT paper feed roller
and the registration 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 ejected to a face-up stacker or to a face-down
stacker, according to the outputting method selected by opening or closing of the face-up stacker.
The above refers to the simplex printing operation of the printers, and the following explains the
duplex printing operation.
During duplex printing, paper, which firstly passes the fuser unit after its backside is printed, is
sucked into the duplex unit by the separator DUP. After entering the paper reverse transport path,
the paper is carried from there to the inside of the duplex unit by the inverting operation of the
reverse roller. 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,
and then arrives the route for paper feeding from a tray. From here on, the same operation as that
of simplex printing of paper fed from the tray takes place.
Top cover
Paper exit
Face-up stacker
Paper cassette
Front cover
Fuser unit
Y
M
C
K
Second tray unit (option)
