Oki B431L6

Oki Data CONFIDENTIAL
2. Operational explanation
44983601TH Rev.1
2-7 /
2.2 Printing process
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.
：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）
Facedownstacker
Ejecting
sensorlever
Multipurposetray
Tray 1
Tray2(option)
Entrance
sensorlever
Writingoutsensorlever