Canon imageRUNNER 2520 Series, Service Manual, Page: 66 / 402

• Pickup from manual feeder
Multi
ON
Registration
ON
Primary charging AC bias
Main Motor (M1)
Primary charging DC bias
Laser
Developing AC bias
Developing DC bias
Developing cylinder clutch (CL3)
Transfer bias
Static eliminator bias
● Sequence of Operation (printing)
Primary charging
AC bias
Main Motor (M1)
Primary charging
DC bias
Laser
Developing AC bias
Developing DC bias
Developing cylinder
clutch (CL3)
Transfer bias
Static eliminator bias
Image formation sequence
(1st sheet)
Image formation sequence
(2nd sheet and later)
Sheet-to-sheet
sequence
Registration
ON
Registration
ON
Image write
end
● Sequence of Operation (last rotation)
Image write
end
Primary charging AC bias
Main Motor (M1)
Primary charging DC bias
Laser
Developing AC bias
Developing DC bias
Developing cylinder clutch (CL3)
Transfer bias
Static eliminator bias
[1]
In [1] above, a cleaning bias (-2700V) is applied.
Controls
■ Drum Unit
The drum unit mainly consists of the photosensitive drum, primary charging roller, brush roller, cleaning blade, and waste toner
feed screw, and is driven by the main motor (M1).
2. Technical Explanation
56