Operation Manual

64 Chapter 4 - Operational overview
EN
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 seven processes:
Figure 18. Image formation block diagram
Toner cartridge
As the focal point of the image formation system, the toner cartridge
houses the cleaning, conditioning, and developing stages of the
process. The toner cartridge contains the photosensitive drum
primary charging roller, developing station, toner cavity, and cleaning
station. By including these components (which wear, degrade, or are
consumed) in the replaceable toner cartridge, the need for many
service calls is eliminated. The special photosensitive properties of
the drum form an image on the drum surface and then transfer the
image to media.
CAUTION The printer toner cartridge does not include a light-blocking shutter. Do
not expose the drum to light, which can permanently damage the drum.
Protect the toner cartridge whenever removing it from the printer.