UX-4000MU
FO-2950MU/C
STEP 5 (Paper separation): The paper is separated from the OPC
drum.
There is an electrostatic force between the paper which is positively
charged in transfer operation and the OPC drum which is negatively
charged. The positive charge on the paper is released to the separation
electrode, which is the same potential as the aluminum layer of the OPC
drum, to reduce the potential difference between the OPC drum and the
paper, reducing the electrostatic force.
This operation facilitates separation of the paper from the OPC drum.
CGL
CTL
Separation
electrode
Paper
Transfer roller
Aluminum layer
(Drum base)
Fig. 16
STEP 6 (Discharge): The drum surface is discharged to facilitate clean-
ing of the drum surface. (The remaining toner is
easily collected by the main charger roller.
AC600V
(P-P)
CTL
CGL
DC-850V
Main charger roller (brush)
Residual
toner
Aluminum layer (Drum base)
OPC drum
Fig. 17
STEP 7 (Cleaning):
Residual toner on the OPC drum is removed.
The main charger is a rotating brush roller.
The main charger removes residual toner from the OPC drum by its
rotating sweeping action and causes it to stick to the brush. The main
charger brush is in close contact with the mesh-type brush cleaning
plate which removes toner and paper dust from the main charger brush
mechanically.
3 – 9
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Summary of Contents for FO-2950M - B/W Laser - All-in-One
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Page 109: ...UX 4000MU FO 2950MU C 6 13 TEL LIU and Hook SW PWB parts layout ...
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