Control; Paper Size Control; Control Of Laser Radiation; Process Control - Epson AcuLaser C1100 Service Manual

EPSON AcuLaser C1100

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.
OPERATING PRINCIPLES
Motor/
Clutch
ROS ASSY
Toner Dispense Control
MCU PWB
Calculation of
compensation value
Temp.
Life Counter
Humidity
SENSOR
PWBA CRUM
HUM&TEMP
Figure 2-54. Process control Mechanism
Control
Revision B
1st BTR
SENSOR
ASSY ADC
BCR
Laser
Power
Control
LV/HVPS
Voltage/Current
Control
Calculation of
parameters for
creating ADC toner
patches
Toner Density
Leg_Sec06_064EB
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