Charge; Drum Cleaning - Ricoh MP C2504 Field Service Manual

7. Detailed Descriptions
PCU
Bk PCU motor: Black / ITB drive motor*
CMY PCU motor: CMY
* The PCU motor: Black / ITB drive motor is used to drive both the image transfer unit and the waste toner
bottle.

Charge

This device uses a charge roller [B] for all four colors to reduce generation of ozone.
The charge roller, which is a rubber-covered roller that has a metal shaft, rotates in the forward direction
contacting the drum [A], and applies a charge to the drum surface uniformly.
When the charge roller is dirty, an uneven charge is generated, so a cleaning roller [C] always contacts
the charge roller.

Drum Cleaning

Residual toner on the drums after image transfer is recovered by a cleaning blade [A]. The cleaning
blade is installed counter to the drum rotation in contact with the drum, and scrapes toner off.
1136
Drive source