Specifications

2-27
2.4.9.2 Developing Bias
•
The amount of toner attracted onto the surface of the PC Drum is controlled by varying the developing
bias voltage.
•
As the PC Drum deteriorates and its photoconductive layer begins to wear, it becomes more sensitive to
the increase in the amount of toner. As a countermeasure against this problem, the developing bias
voltage is automatically switched according to the PC Drum temperature, thereby stabilizing the image
quality level.
PC Drum
Sleeve/Magnet Roller
Developing Bias Contact Terminal
Electrical Component Control Signal ON OFF
Vb
PJ14A-1A
See block diagram of the printer.
LH