Service manual

7.4.2 Paper Discharge

The paper transfer unit has a discharge brush [F] (see illustration 7.4.1

Paper Transfer Bin) which is grounded to the main frame. This brush

discharges the electric charge remaining on the paper to help the paper

separate from the transfer belt. The curvature of the transfer belt also helps

the paper to separate from the transfer belt.

7.4.3 Uniform Transfer Belt Charge

The transfer belt is grounded via each roller.

However, especially in multiple copy run mode, there may be residual

voltage in the image area on the belt. This residual voltage affects the image

of the next copy job.

To remove the residual voltage, the machine applies a voltage just after the

start key is pressed, while the transfer belt is rotating.

This makes the potential of the belt surface even, then the potential is

grounded by the grounded rollers.

This current can be changed using SP 2-918 (50 to 500 µA) if copy quality

symptoms indicate that the transfer belt charge is not uniform.

TRANSFER BELT UNIT

A166/A187/A189 2-110 SM

CÓPIA NÃO CONTROLADA