Block 2: Developing
Toner adheres to the electrostatic latent image on the photosensitive drum.
Step 3: Developing
Toner acquires a negative charge from the friction that occurs when the developing cylinder rotates
against the developing blade. The negatively charged toner is attracted to the latent image on the
photosensitive drum surface because the drum surface has a higher potential. The AC bias that is
superimposed with the developing negative DC bias is applied to the developing cylinder.
Figure 1-18 Developing
Blade
Developing cylinder
AC bias
DC bias
Photosensitive drum
Unexposed area
Exposed area
Exposed area
Unexposed area
24 Chapter 1 Theory of operation ENWW
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