HP 2420 Service Manual - Page 85
Image-formation system, Print cartridge diagram
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Image-formation system Laser printing requires the interaction of several different technologies, including electronics, optics, and electrophotographics, to provide a printed page. Figure 5-7. Print cartridge diagram Each process functions independently and must be coordinated with the other printer processes. Image formation consists of the following five processes: ● Electrostatic latent-image formation ● Developing ● Transfer ● Fusing ● Drum cleaning The five processes contain eight steps, which are shown in the figure Figure 5-8. Imageformation system and described in the following sections. Figure 5-8. Image-formation system ENWW Image-formation system 71
Image-formation system
Laser printing requires the interaction of several different technologies, including electronics,
optics, and electrophotographics, to provide a printed page.
Figure 5-7.
Print cartridge diagram
Each process functions independently and must be coordinated with the other printer
processes. Image formation consists of the following five processes:
●
Electrostatic latent-image formation
●
Developing
●
Transfer
●
Fusing
●
Drum cleaning
The five processes contain eight steps, which are shown in the figure
Figure
5-8.
Image-
formation
system
and described in the following sections.
Figure 5-8.
Image-formation system
ENWW
Image-formation system
71