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Step 6 (Cleaning)
Residual toner on the drum is removed by the cleaning blade. The
removed toner is sent to the waste toner container by the waste toner
transport screw.
Blade
CTL
Residual toner
Step 7 (Discharging)
When the OPC drum is exposed to the discharge lamp light, positive
and negative charges are generated in the OPC drum CGL. The
negative charges generated in the CGL move towards the residual
positive charges in the aluminum layer, while the positive charges in
the CGL move towards the residual negative charges on the OPC
drum surface. Therefore, the positive and the negative charges are
neutralized in the aluminum layer and on the OPC drum surface,
removing the residual charges on the OPC drum surface. As a result,
the OPC drum surface potential becomes 20V ∼ 30V.
Residual charge
CTL
CGL
Aluminum layer
CGL
Aluminum layer
OPC drum
Discharge lamp
OPC drum
Residual charge
1
9
8
7
6
1 Main corona unit
2 Blank lamp
3 Developer unit
4 MG roller
5 Transfer corona unit
6 Separation corona unit
7 Separation pawl
8 Cleaning blade
9 Discharge lamp
1
9
8
7
1 Main corona unit
2 Blank lamp
3 Developer unit
4 MG roller
5 Transfer corona unit
6 Separation corona unit
7 Separation pawl
8 Cleaning blade
9 Discharge lamp
5 – 13
2
3
4
5
2
3
4
5
6
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