Epson Aculaser C9200N - Page 49

EPSON AcuLaser C9200N Revision D
OPERATING PRINCIPLES Operating Principle of Main Unit Mechanism 49
Confidential
DEVELOPING BIAS
 The developing bias voltage (Vdc) is applied to the Developing Roller so
that an adequate amount of toner is attracted onto the surface of the PC
Drum.
 During development, Vdc of DC(-) + is applied so that Toner can be
attracted PC Drum easily. This component of AC is applied only during
development. Other than during development, only Vdc of DC(-) is
applied.
 The developing bias (Vdc) is supplied from High Voltage Unit (HV1).
Figure 2-23. Developing bias
4038T2C035AA
Pressure Plate
Developing Bias Terminal
(Main Body Side)
Pressure Plate
Developing Roller
Developing Roller