Erase; Automatic Image Density Control (Aidc - MINOLTA-QMS Magicolor 2200 Series Manual

5-6 Erase (before image transfer)
The before image transfer erase removes the electrical load for sections on the OPC drum with no toner attached.
The 24 eraser lamps (LED) on the eraser board come on and remove the electrical load for the unexposed sections by
irradiating the surface of the OPC drum for the pre-image transfer of the image on the image transfer belt.
Image transfer belt
Eraser lamp (LED)
OPC drum

5-7 Automatic Image Density Control (AIDC)

The AIDC sensor is located at the same position as the eraser lamp. It detects the density of the AIDC marks for each
color that have been formed on the OPC drum, and the AIDC controller determines the optimum developing bias value
for printing.
• The detection of AIDC density is performed by one LED and two reflector-type photo sensors.
• AIDC detection is performed for each toner cartridge color when the power supply switch is turned on.
Image transfer belt
AIDC sensor
OPC drum
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