Sharp MX-2314N - Process Control

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#507"
-#$607"
-#GRIDVOLTAGE
$6BIASVOLTAGE
4#07"
$6UNIT
)NMATEDENSITY
SENSORIMAGE
REGISTRATIONSENSOR
4EMPERATURE
HUMIDITYSENSOR
,35
-#UNIT
$,
-&007"
,35MOTHER07"
3#507"
(IGHDENSITYPROCESS
CONTROLDATA
$6BIASVOLTAGE
-#GRIDVOLTAGE
0APERTYPE
0APERSIZE
$UPLEXMODE
/0#DRUMCOUNTER
0IXELCOUNTER
(4DITHER,54
$6BIAS
VOLTAGE
4RANSFERCURRENT
4ONERSUPPLY
QUANTITY
6IDEODATA
)MAGEDATA
,ASERPOWER
/0#DRUM
0RIMARY
TRANSFERUNIT
3ECONDARY
TRANSFERUNIT
$6MOTOR
,35TEMPERATURE
SENSOR
,35
TEMPERATURE
#ALCULATIONUNIT
)MAGEDENSITYLEVEL
(ALFTONEPROCESSCONTROL
DATA$ITHERCORRECTION
0IXELCOUNTERDATA
,35DISTORTION
CORRECTIONTABLE
4ONER
MOTOR
-#GRID
VOLTAGE
4ONERCARTRIDGE
ROTATIONPHASE
/0#DRUM
4ONERDENSITY
SENSOR
/0#DRUM
ROTATIONSENSOR
,%$CURRENT
CONTROL
4ONERCARTRIDGE
COUNTER
,IGHTQUANTITYCONTROL
3TANDARD
REFLECTIONPLATE