Cleaning; Transfer Roller Cleaning Mechanism; Separation Mechanism; Controlling The Static Eliminator Bias - Canon iR4570 Series Service Manual

Chapter 7

7.9.3 Cleaning

7.9.3.1 Transfer Roller Cleaning Mechanism

iR2270 / iR2870 / iR3570 / iR4570
The machine uses the transfer roller cleaning mechanism to return the toner sticking to the transfer roller back to the
photosensitive drum by applying a cleaning bias to the roller.
Once the toner reaches the drum, it is scraped by the photosensitive drum cleaning blade for collection in the waste
toner box.

7.9.4 Separation Mechanism

7.9.4.1 Controlling the Static Eliminator Bias

iR2270 / iR2870 / iR3570 / iR4570
Static Eliminator Bias
1st side: -2300 V
2nd side: -3000 V
A DC bias is applied between sheets while an image is being formed. (It is applied until the ongoing job is over.)
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