Specifications

18-6. Cleaning Bias (Option)
•
A Cleaning Bias Seal can be installed optionally.
•
It is installed according to the type of copy paper the user uses.
•
It must be installed if the user uses acid paper which contains a lot of talc.
•
A bias voltage of approx. DC+410V is applied to the Cleaning Bias Seal by
Seal Bias HV3, thereby attracting talc from the surface of the PC Drum.
•
The cleaning bias is turned ON and OFF by the signal output from pin 95 of
IC4A on Master Board PWB-A.
<Cleaning Bias ON Timing>
Approx. 120 msec. after Scanner Control Processor Board PWB-J has
output a TRON (registration) signal, HV3 is turned ON to output the bias
voltage.
<Cleaning Bias OFF Timing>
HV3 is turned OFF approx. 890 msec. after PWB-J has output a SCEND
signal.
1075C18MAA
Cleaning Bias Seal
M-159