MX-3114N OPERATIONAL DESCRIPTIONS 13 – 25
D. Process control
(1)
General
The process control system is provided to maintain stable print image qualities under changes in the environmental conditions and in charac-
teristics of supply parts.
The major operation of the process control is to detect a change in the print density with the image density sensor and change the DV bias, the
MC grid voltage and the dither pattern according to the detection result, maintaining the stable color balance and the print density.
(2)
Block diagram
The process control system is composed as shown in the block diagram below.
0#507"
-#$607"
-#GRIDVOLTAGE
$6BIASVOLTAGE
4#07"
$6UNIT
)NMATEDENSITY
SENSORIMAGE
REGISTRATIONSENSOR
4EMPERATURE
HUMIDITYSENSOR
,35
-#UNIT
$,
-&007"
,35MOTHER07"
3#507"
(IGHDENSITYPROCESS
CONTROLDATA
$6BIASVOLTAGE
-#GRIDVOLTAGE
0APERTYPE
0APERSIZE
$UPLEXMODE
/0#DRUMCOUNTER
0IXELCOUNTER
(4DITHER,54
$6BIAS
VOLTAGE
4RANSFERCURRENT
4ONERSUPPLY
QUANTITY
6IDEODATA
)MAGEDATA
,ASERPOWER
/0#DRUM
0RIMARY
TRANSFERUNIT
3ECONDARY
TRANSFERUNIT
$6MOTOR
,35TEMPERATURE
SENSOR
,35
TEMPERATURE
#ALCULATIONUNIT
)MAGEDENSITYLEVEL
(ALFTONEPROCESSCONTROL
DATA$ITHERCORRECTION
0IXELCOUNTERDATA
,35DISTORTION
CORRECTIONTABLE
4ONER
MOTOR
-#GRID
VOLTAGE
4ONERCARTRIDGE
ROTATIONPHASE
/0#DRUM
4ONERDENSITY
SENSOR
/0#DRUM
ROTATIONSENSOR
,%$CURRENT
CONTROL
4ONERCARTRIDGE
COUNTER
,IGHTQUANTITYCONTROL
3TANDARD
REFLECTIONPLATE