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Image formation system
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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. Each process functions
independently and must be coordinated with the other printer processes. Image formation
consists of six processes:
Figure 3-5 Image formation block diagram
Toner cartridge
As the heart of the image formation system, the Toner Cartridge houses the cleaning,
conditioning, and developing steps of the process. The Toner Cartridge contains the
photosensitive primary charging roller, developing station, toner cavity, and cleaning station.
Including these components (which wear, degrade, or are consumed) in the replaceable
Toner Cartridge eliminates the need for a service call when replacement is required. The
special photosensitive properties of the drum allow an image to be formed on the drum
surface and then transferred to paper.
CAUTION:
The printer's Toner Cartridge does not include a light-blocking shutter. Be careful to avoid
exposing the drum to light, which can permanently damage the drum. Protect the Toner
Cartridge whenever removing it from the printer.
Step 1
Cleaning stage. The cleaning blade is in contact with the surface of the drum at all
times. As the drum rotates during printing, excess toner is wiped off and stored in
the waste toner receptacle.