FrameMaker Ver.5.5E(PC) EP3000/EP3010 GENERAL, MECHANICAL/ELECTRICAL
98.06.10
M-13
1173SBM0701A
To provide image stabilization control, this copier has the AlDC Sensor fitted to the Clean-
ing Unit of the Imaging Unit. The sensor is used to detect the toner density and background
level on the PC Drum.
Operation
1. The AIDC Sensor Board LED projects approx. 950-nm infrared light onto the surface of
the PC Drum.
2. The AIDC Sensor Board phototransistor detects the amount of light reflected back.
3. The phototransistor outputs a voltage corresponding to the intensity of the light
reflected back.
7-1.
AlDC Sensor
Toner Density on PC Drum
Light reflected
Output Voltage
High
Small
High
Low
Large
Low
1149M005AA
Output
LED Power
Supply
GND
PC Drum
AIDC Sensor
Image Transfer/Paper Separation Coronas