Step 2: Laser-Beam Exposure; Development Block; Step 3: Developing; Figure 1-15 Laser-Beam Exposure - HP LaserJet Enterprise 700 M712 series Handbuch Zur Fehlerbehebung

Step 2: laser-beam exposure

The laser-beam strikes the surface of the photosensitive drum to neutralize the negative charge. An
electrostatic latent image forms where the negative charge was neutralized.
Figure 1-15

Development block

Toner adheres to the electrostatic latent image on the photosensitive drum, which becomes visible.

Step 3: developing

Toner acquires a negative charge from the friction that occurs when the developing roller rotates
against the developer blade. The developing bias is applied to the developing roller to make difference
in the electric potential of the drum. The negatively charged toner is attracted to the latent image on the
photosensitive drum because the drum surface has a higher potential. The latent image becomes visible
on the drum.
Figure 1-16
Developer blade
ENWW
Laser-beam exposure
Photosensitive drum
Developing
Developing roller
Photosensitive drum
Laser beam
Developing bias
Image-formation system
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