Ricoh Aficio FX10 Service Manual page 52

June 10th, 1997
Bias Control Circuit
Toner Application
Roller
D e v e l o p m e n t
Roller
Transfer Roller
The FCIP2 controls the voltages to the toner application and development roll-
ers using the Bias 0 and Bias 1 and Biaspwm signals as shown in the
following table.
Bias 0
In
Bias 1
Biaspwm
Toner Application
Out
Roller
Development Roller
(*1):The pulse data changes to apply different biases to the development/ap-
plication roller when the print image density is changed by the user(user
parameter).
BL1
BL2
Bias0
Bias1
Transfer0
Power Transfer1
Pack
B i a s p w m
Low High
Low Low
D%(*1)
BL1 BH1
BL2 BH2
Darker
-747V
-431V
2-23
DETAILED SECTION DESCRIPTIONS
Q A 1
21-6
21-7
Power
Pack
21-4
Driver
21-5
Driver
21-9
IC
Q A 2
FCU
Low
High
- -
Off
BL2
Normal
-700V
-400V
PRINTING
FCIP2
H523D509.wmf
High
High
-
Off
Off
Lighter
-653V
-369V