HP Color LaserJet CM2320 - Multifunction Printer - Page 112

ITB cleaning stage
Step 8: ITB cleaning
The ITB cleaning roller and the cleaning brush are applied with DC positive bias to charge the residual
toner positive. Because the primary transfer pad is also applied with DC positive bias, the positively
charged residual toner is reverse-transferred to the photosensitive drum from the ITB surface.
Figure 5-19 ITB cleaning
100 Chapter 5 Theory of operation ENWW