Epson AcuLaser C9200N Service Manual page 61

EPSON AcuLaser C9200N
AUTO TRANSFER VOLTAGE CONTROL
To optimize image transfer output, the machine is provided with auto transfer
voltage control. The control lets a constant current flow through each of the
Image Transfer Rollers. Then, from the voltage detected, the resistances of the
1st Image Transfer Roller, 2nd Transfer Roller, and Transfer Belt are
measured. The optimum image transfer output voltages applied to the 1st and
2nd Transfer Rollers during printing are thereby automatically adjusted.
The 1st and 2nd image transfer auto transfer voltage control operations are
carried out immediately before the execution of image stabilization control.
TRANSFER BELT CLEANING
The Cleaning blade is mounted on the Transfer Belt in order to remove the
remaining toner at the Transfer Belt.
The Cleaning blade is always pressed to the Transfer Belt by the Fixed blade
system.
Toner Collecting Screw
Cleaning Blade
Figure 2-40. Transfer Belt cleaning
OPERATING PRINCIPLES
REVERSING CONTROL OF THE TRANSFER BELT
Paper dust or toner between the Transfer Belt and the edge of the Cleaning
blade will be removed by slightly rotating the Transfer Belt backward and then
rotating it forward again.
Transfer Belt
Driven Roller
4038T2C164AA
Operating Principle of Main Unit Mechanism
The Cleaning will be executed at the end of each print job sequence.
Cleaning will be performed when the power is turned ON, the door is
opened or closed, or the deep sleep mode (heater off mode) is released.
Cleaning will be performed when Image stabilization is finished.
Revision D
61
Confidential