Oki Data CONFIDENTIAL
2. DESCRIPTION OF OPERATION
44871001TH Rev.6
2-6
2.2 Printing process
:Paper level indicator lever
:Driven roller
:Driving roller (Continuous rotation)
:Driving roller (Control rotation)
:Paper conveying route
:Indicating lever
:Photo sensor
:Micro switch
:Magnetic clutch
:Micro switch
Front
Back
Face up stacker
Eject Assy opening
-closing sensor
1st eject roller
2nd eject roller
2nd Hopping sensor
2nd Entrance sensor
Face up stacker
opening-closing sensor
Paper end Sensor
Stacker Cover
opening-closing sensor
Paper end / Cassette
presence - absence sensor
Cassette presence
- absence sensor
Heat roller
Backup roller
Feed roller
Feed roller
Pickup roller
Pickup roller
Conveying roller
Image drum
Conveying roller
Transfer
roller
Registration roller
Registration roller
MPT feed roller
(B431 only)
Ejecting
sensor lever
Multipurpose tray
Tray 1
Tray 2 (option)
Entrance
sensor lever
Writing out sensor lever
The paper fed from Tray 1 and Tray 2 is conveyed by feeding roller, conveying roller, and resist
roller. When feeding paper is from MPT, it is conveyed by MPT, feeding roller, and resist roller.
After that the feeding paper that is conveyed by image drum and the nip part of transfer roller
forms toner image on the paper through electrophotographic process. And then, the toner
on the paper is fused by the heat and pressure as the fuser unit passing through. The paper
that fused the toner image is ejected from the face down stacker of the ejecting roller. To
eject printed pages on the face-up stacker, open the face-up stacker. (Duplex printing is not
available during face-up ejection.)
The above is about the operations at simplex printing, yet the below explains the operations
at duplex printing. While duplex printing, paper, which firstly passes the fuser unit after its
backside is printed, is conveyed to the inside of the duplex unit, by the reverse rotation of
the first and the second ejecting rollers in a certain period of time after the paper rear end
passes the fuser unit. The paper is conveyed by the conveying roller of the duplex unit and
then arrives the route for paper feeding from a tray. After that, the paper is handled in the
same way as paper fed from a tray for simplex printing.