HP LaserJet Pro Color MFP M476dw - Page 39

Transfer stage
Step 4: primary transfer
The toner image on the photosensitive drum is transferred to the ITB. The DC positive bias is applied to the
primary transfer pad. The negatively charged toner transfers to the ITB from the drum surface.
Figure 1-14 Primary transfer
ITB
Primary transfer pad
Photosensitive
drum
DC bias
Step 5: secondary transfer
The toner image on the ITB is transferred to the print media. The DC positive bias is applied to the secondary
transfer roller. As the media passes between the secondary transfer roller and the ITB, the toner image is
transferred to the media.
Figure 1-15 Secondary transfer
ITB
Secondary transfer roller
Media
ITB drive roller
DC bias
ENWW Image-formation system 19