Read Sharp AR-651 (serv.man14) Service Manual online
AR-651/810 DRUM/CLEANER UNIT 11 - 5
11. 4. 4. Construction
•
Image quality sensor
: Emitting of the light which corresponds to the light control
voltage to output the voltage which corresponds to the
reflective light amount for the toner image on the drum
•
D/A converter
: Outputting of the light source light control voltage
•
Laser optical unit
: Carrying out the test pattern exposure to form the toner image
•
A/D converter
: Converting of the sensor output voltage into the digital value
•
Image formation process system
: Charging/Laser exposuring/Developing
•
CPU
: Carrying out of the procedure [1]~[7] described in the previous
page
Image formation process system
Main charger
Image quality sensor
Drum
Laser exposure
Developing
Test pattern
Main CPU
Reflected light
amount signal
Light source
amount signal
Various image
formation conditions
A/D
D/A
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