Process Control; Tc (Toner Content) Control; Process Control Mechanism - Epson AcuLaser CX11 Service Manual

EPSON AcuLaser CX11/CX11F

2.2.5.2 Process control

To ensure a stable image quality, parameters relating to image generation need to be
corrected on a timely basis. Control of the entire print process including the correction
of parameters is called "process control."

TC (Toner Content) control

Toner patches for TC control are created on the Belt surface to measure the density
by the SENSOR ASSY ADC. According to the measured result, the amount of
toner supply, the amount of laser radiation, and the applied high voltage are
controlled. The execution sequence of the TC control is given on the next page.
OPERATING PRINCIPLES
Motor/
Clutch
MCU PWB
Life Counter
PWBA CRUM
Printer Section Operating Principle
BCR
Laser
Power
Control
ROS ASSY
Toner Dispense Control
Calculation of
Calculation of
parameters for
compensation value
creating ADC toner
patches
Temp.
Toner Density
Humidity
SENSOR
HUM&TEMP
Figure 2-53. Process control mechanism
Revision B
1st BTR
SENSOR
ASSY ADC
LV/HVPS
Voltage/Current
Control
Leg_Sec06_064EB
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