Control; Paper Size Control; Ros Laser Intensity Control; Process Control - Dell 3010CN Service Manual

7. Control

7.1 Paper size control

This device doesn't have switches for detecting paper size, and only length of paper is detected by
Regi Sensor when feeding paper. If printing data and paper size don't match, error is sended to the
controller.

7.2 ROS laser intensity control

PWBA LD (Laser Diode) converts image data of electric signal input to pulsing of laser beam.

7.3 Process control

It is necessary to correct parameters related to forming image occasionally in order to obtain stable
image quality at all times. Overall control of printing processes including correction of parameters
is called "Process control".
TC (Toner Content) control
Sensor ADC reads concentration of toner patch for controlling TC created on the belt surface,
and according to the result of reading, toner supply amount, laser intensity or high voltage to
be applied is controlled.
Calculation of correction value / Calculation of parameter for creation of ADC toner patch
Motor/
Clutch
ROS
Toner Dispense Control
PWBA MCU
Calculation of
correction value
Temp.
Life Counter
Humidity
Sensor
CRUM
Environment
1st BTR
Sensor
ADC
BCR
Laser
Power
Control
HVPS
Calculation of parameter
for creation
of ADC toner patch
Toner Density
6 - 36
Chapter 6 Principle s of O peration
Voltage/Current
Control
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