Oki Data CONFIDENTIAL 2. DESCRIPTION OF OPERATION44871001TH Rev.6 2-62.2 Printing processPaper level indicator leverDriven rollerDriving roller (Continuous rotation)Driving roller (Control rotation)Paper conveying routeIndicating leverPhoto sensorMicro switchMagnetic clutchMicro switchFrontBackFace up stackerEject Assy opening-closing sensor1st eject roller2nd eject roller2nd Hopping sensor2nd Entrance sensorFace up stackeropening-closing sensorPaper end SensorStacker Coveropening-closing sensorPaper end / Cassettepresence - absence sensorCassette presence- absence sensorHeat rollerBackup rollerFeed rollerFeed rollerPickup rollerPickup rollerConveying rollerImage drumConveying rollerTransferrollerRegistration rollerRegistration rollerMPT feed rollerB431 onlyFace down stackerEjectingsensor leverMultipurpose trayTray 1Tray 2 (option)Entrancesensor leverWriting out sensor leverThe paper fed from Tray 1 and Tray 2 is conveyed by feeding roller, conveying roller, and resistroller. 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 rollerforms toner image on the paper through electrophotographic process. And then, the toneron the paper is fused by the heat and pressure as the fuser unit passing through. The paperthat fused the toner image is ejected from the face down stacker of the ejecting roller. Toeject printed pages on the face-up stacker, open the face-up stacker. (Duplex printing is notavailable during face-up ejection.)The above is about the operations at simplex printing, yet the below explains the operationsat duplex printing. While duplex printing, paper, which firstly passes the fuser unit after itsbackside is printed, is conveyed to the inside of the duplex unit, by the reverse rotation ofthe first and the second ejecting rollers in a certain period of time after the paper rear endpasses the fuser unit. The paper is conveyed by the conveying roller of the duplex unit andthen arrives the route for paper feeding from a tray. After that, the paper is handled in thesame way as paper fed from a tray for simplex printing.
