Epson SEPG04002 2.8 Control

EPSON AcuLaser C1100 Revision B
OPERATING PRINCIPLES Control 110
2.8 Control
2.8.1 Paper size control
As this printer does not have switches, etc. for detecting paper size, only the paper
length is detected by SENSOR REGI during paper feed. When the paper size does not
match the print data, an error is sent to the controller.
2.8.2 Control of laser radiation
The PWBA LD (Laser Diode) converts the image data (electric signal), to laser light
ON/OFF signals.
2.8.3 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.
Figure 2-54.Process control Mechanism
Laser
Power
Control
Voltage/Current
Control
Toner Dispense Control
Toner Density
Life Counter Temp.
Humidity
BCR
1st BTR
LV/HVPS
ROS ASSY
PWBA CRUM
MCU PWB
SENSOR
ASSY ADC
SENSOR
HUM&TEMP
Motor/
Clutch
Leg_Sec06_064EB
Calculation of
compensation value
Calculation of
parameters for
creating ADC toner
patches