HP LaserJet Pro MFP M521 - Page 47

The product uses an on-demand fuser method. The toner image is permanently affixed to the paper with
heat and pressure.
Figure 1-23 Fusing
Media
Toner
Fuser film
Fuser heater
Pressure roller
Brush
Fuser bias
Cleaning stage
Step 7: The cleaning blade scrapes the residual toner off of the photosensitive drum and deposits it
into the waste toner case.
Figure 1-24 Drum cleaning
Toner collection box
Photosensitive
drum
Cleaning blade
ENWW
Image-formation system
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