2RV/2RW/2RX/2RY/3RA
3-28
(4) Drum section
The drum section consists of the drum, the main charger roller unit, and the cleaning blade, etc. The drum
surface is evenly charged to prepare forming the electrostatic latent image by emitting the laser beams.
(4-1) Main charger unit
The drum surface is evenly charged by the shield grid attached to the bottom of the unit.
(4-2) Cleaning
Remaining toner on the drum surface after transferring is removed by the cleaning blade, and collected to
the toner container by the collecting roller. The eraser PWB consists of LED lamp, and it removes the
remaining electric charge on the drum before the main charge.
[Components parts]
1. Drum
2. Main charger unit
3. Shield grid
4. Collecting roller
5. Cleaning blade
6. Cleaning roller
7. Eraser PWB
8. Flicker plate
9. Drum unit frame
Figure 3-28
Figure 3-29
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3
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5
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