Canon LBP5050 Series Service Manual

Also see for I-Sensys LBP5050: Specifications

Contents

Canon LBP5050 Series Service Manual Manual pdf 31 page image

Chapter 22-5Toner adheres to the electrostatic latent image on the photosensitive drum, which becomes visible.Step 3: DevelopmentToner acquires a negative charge from the friction that occurs when the developing cylinder rotates against the developing blade. When the negatively chargedtoner comes in contact with the drum, it adheres to the latent image because the drum surface has a higher potential.F-2-72.4.1.5 Transfer block 0018-6682LBP5050N / LBP5050During the three steps that comprise this block, a toner image on the photosensitive drum is transferred to the print media through the ITB.Step 4: Primary transferThe 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 tonertransfers to the ITB from the drum surface.F-2-8Step 5: Secondary transferThe 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 thesecondary transfer roller and the ITB, the toner image is transferred to the media.F-2-9Step 6: SeparationThe elasticity of the print media and the curvature of the ITB drive roller cause the media to separate from the ITB.Developing bladeDeveloping cylinderDC negative biasPhotosensitive drumUnexposed areaExposed areaExposed areaUnexposed areaITBPrimary transfer padPhotosensitivedrumDC biasITBSecondary transfer rollerMediaITB drive rollerDC biasStatic charge eliminator