Pcu (Photo Conductor Unit) - Ricoh G133 Service Manual

6.4 PCU (PHOTO CONDUCTOR UNIT)

6.4.1 OVERVIEW
1. OPC drum
2. Cleaning blade
3. Brush roller
4. Lubricant bar
5. Lubricant application blade
6. Cleaning roller (charge roller)
This machine has four tandem PCUs. Therefore, four color developments are possible
during one paper path. This improves the productivity of outputs in color printing mode.
Each PCU contains identical components (drum unit, development unit and so on), but the
PCUs are not interchangeable.
The diameter of the drum is 40 mm (circumference: about 125.7 mm).
The photoconductor gap between a drum and the corresponding development roller is not
possible to adjust because these are assembled as a PCU at the factory.
The ID chip is part of the TD sensor assembly. The ID chip contains counters and other
data about the PCU, drum unit, and development unit. If you replace the development unit
with a new one, the counter information for the drum unit is not kept on the new ID chip.
SM
PCU (Photo Conductor Unit)
7. Charge roller (non-contact)
8. TD sensor/ID chip
9. Mixing auger
10. Development roller
11. Inner pressure adjustment filter
6-25 G133