Charge

Charge, Discharge

The charge roller [A] evenly charges the drum for each color. The potential sensor [D] measures the charge on the surface of the drum. After transfer and before cleaning, LED emission from the quenching lamp [B] discharges the surface of the drum [C].

Charge Roller / Cleaning Roller

The charge roller [B] applies charge to the drum. The charge roller [B] is separated slightly from the drum surface and rotates in the opposite direction to the drum. The combined high-voltage power supply board supplies the charge roller shaft with the charge that is applied to the drum.

Uneven charge can occur if the charge roller [B] is dirty. The charge roller cleaning roller [A] cleans the charge roller to prevent this.

The charge roller cleaning roller [A] rotates in the opposite direction to the charge roller [B] in order to clean the surface of the charge roller.

The charge roller cleaning roller [A] is usually separated from the charge roller [B]. When the charge roller [B] needs to be cleaned (such as between the sheets after the charge roller rotates in a certain distance), the charge roller cleaning roller [A] comes into contact with the charge roller [B]. The charge roller cleaning roller [A] is lifted by the actuator arm [C] when it is separated from the charge roller [B]. When the charge roller [B] needs to be cleaned, the charge roller cleaning roller solenoid [D] turns ON to compress the spring of the actuation arm. Then the charge roller cleaning roller [A] comes into contact with the charge roller [B].

Although the cleaning may be performed automatically at a specified number of pages, it can also be performed manually by executing SP2-222-001 (Chg Roll Cleaning: Execute all).