22 2-172-17Technical Overview > Image Formation System > Image Formation Process > Drum Cleaning BlockTechnical Overview > Image Formation System > Image Formation Process > Drum Cleaning Block■ Transfer BlockDuring the two steps that comprise this block, a toner image on the photosensitive drum istransferred to the print media.Step 4: TransferThe transfer bias is applied to the transfer roller to charge the print media positive. Thepositively charged media attracts the negatively charged toner from the photosensitivedrum surface.Transfer biasMediaTransfer rollerPhotosensitivedrumStep 5: SeparationThe elasticity of the print media and the curvature of the photosensitive drum cause themedia to separate from the drum surface. The static charge eliminator reduces back sidestatic discharge of the media for stable media feed and image quality.MediaTransfer rollerPhotosensitivedrumStatic chargeeliminatorF-2-19F-2-20■ Fixing BlockThe toner image is fixed onto the print media.Step 6: FixingThe printer uses an on-demand Fixing method. The toner image is permanently affixedto the print media by heat and pressure. The Fixing bias is applied to the Fixing Film toimprove image quality.Fixing biasFixing filmTonerPressure rollerFixing heaterMedia■ Drum Cleaning BlockThe residual toner is cleared from the photosensitive drum surface.Step 7: Drum CleaningThe cleaning blade scrapes the residual toner off the surface of the photosensitive drum.The residual toner is deposited in the toner collection box.Tonercollection boxPhotosensitivedrumCleaning bladeF-2-21F-2-22