AM-300 (serv.man7). Chapter 3 (Mechanical Description). - Sharp Copying Equipment Service Manual (repair manual). Page 16

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AM-300DE
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8.7. OPC drum surface potential
8.7.1 Transition of OPC drum surface potential by print
operation
8.7.2 OPC drum surface potential and developing bias
voltage in development
Fig. 18
-950V
-250V
OPC
surface
potential
(-V)
Laser
beam
Dark
area
potential
Developing
bias
Charging/
cleaning
Exposure Residual
toner collection
/Developing
Transfer
Charging
Timer(OPC drum rotating angle)
Light area
potential
Toner
attachment
potential
Fig. 19
-180V
OPC
drum
surface
potential
(-V)
Light area potential
Time (OPC drum rotation angle)
Start
During
developing
Stop
Dark area
potential
Developing
bias
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