Ricoh Aficio FX10 Service Manual page 51

DETAILED SECTION DESCRIPTIONS June 10th, 1997
PRINTING
Bias Control (Other)
At the start and the end of any print process (including the cleaning and initial
toner supply modes), -50 ± 50 V is applied to the toner application roller, and
+250 ± 15 V is applied to the development roller. This is to avoid any toner
transfer to the drum.
Toner
Development Roller
+ 2 5 0 V
Drum Surface Voltage
G N D
Toner Application Roller
- 50V
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Note that the voltage difference between the toner application and develop-
ment rollers is kept the same as in printing, at 300 V. This keeps the same
amount of toner on the development roller at all times during the print run.
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