Ricoh FT5535 Service Manual page 531

Development bias, drum charge voltage, and exposure lamp voltage
NOTE: Only items marked with
The following table shows how process control affects development bias, drum charge, and exposure lamp voltages for various machine
operations.
Mode
ADS mode (–240) + ADS correction +
ID Level
1 ~ 6
Copying
Manual
ID
mode
(–240) +
ID Level
7
VSP Pattern Detection
VR Pattern Detection
VL Forced VL
Pattern Detection
Detection
VL Detection
Non Image Area
Auto ADS Gain Adjustment
NOTE: B = Development bias adjustment factor, selected with SP2-201-001.
BP = Correction to the development bias used for making for VSP patterns, selected with SP2-203.
BL = The value of the development bias that was reached during the most recently performed forced V
V (ID) = ID compensation factor based on the current ID correction used for making VSP patterns.
BL
C = Correction to the drum charge voltage, selected with SP2-001.
CP = Correction to the drum charge voltage for maknig VSP patterns, selected with SP2-003.
Vexp = Exposure lamp voltage, selected with SP4-001.
(
are different from A153, A155, A156, A157, A159, and A160 copiers.
Development Bias [V]
Reproduction
ratio +
correction
correction
Reproduction
Manual ID
ratio
(–240) + + +
correction
correction
correction
(
+ Halftone Mode + B
Reproduction
Lightest ID level
ratio
+ +
dev.bias
correction
(
+ Halfotone Mode + B
(–300) + BP + ID correction
0
V
R
BL + + VBL (ID)
correction
V
R
BL + (–25) + + VBL (ID)
correction
V
R
(–200) + + VBL (ID)
correction
0
Drum Charge Voltage [V]
V
R
+ B
V
R
V
R
(–1500) + +
correction
(
V
+ Halftone Mode + C
R
correction
(
(
Temperature
( –1370) +
correction
V
R
(–1500) + +
correction
+ C
0
0
Exposure Lamp Voltage [V]
Vexp +
correction
(
Temperature Manual ID
Vexp +
correction correction
(
Halftone Mode
+
+ CP 0
0
(
Temperature
correction
Vexp
Vexp +
correction
0
Vexp +
correction
detection routine.
L
V
L
V
L
+
correction
V
L
V
L