Confidential
3-22
3.2.3 Paper Transportation System
(1) Outline
This machine employs the automatic paper feeding with the paper tray.
When toner images are formed on the transfer belt through the operations of print system and
transfer system, a paper is fed by the paper feed roller and transported to the registration roller.
The transported paper is further transported to the transfer, fuser and exit part by the
registration roller synchronizing with the rotation of the transfer belt.
(2) Structure of paper transportation system (Refer to Fig.3-25.)
Paper transportation system consists of following parts.
1 Paper Tray PU: Case to accommodate papers to be automatically fed.
2 Paper Feed Roller PU: Roller to feed paper one by one, preventing multi-feed.
3 Registration Roller PU: Roller to transport papers as synchronizing with the
transfer belt.
4 Transfer Roller PU: Component to be built in the paper exit unit, consisting of
the paper guide, registration roller and transfer roller.
5 Fusing Unit FU: Mechanical part to fuse the toner image with the heat
roller and fix it on the paper.
6 Back Cover ASSY PU
(Paper Exit Unit):
Component to consist of the paper guide and paper exit
roller that exits the fusing-completed paper.
7 Exit Roller ASSY PU: Roller to exit papers from of the machine.
Fig. 3-25
1. Paper Tray PU
2. Paper Feed Roller PU
3. Registration Roller PU
4. Transfer Roller PU
Transfer Belt
6. Back Cover ASSY PU
(Paper Exit Unit):
5. Fusing Unit FU
7. Exit Roller ASSY PU
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