EN Chapter 5 Theory of operation 109
Toner cartridge
Figure 19. Toner cartridge
A major portion of the image formation system is contained in the cartridge as shown in figure 19.
The toner cartridge is the “heart” of the image formation system. It houses the cleaning, conditioning,
and developing steps of the process. The toner cartridge contains the photosensitive drum, primary
charging roller, developing roller, toner cavity, and cleaner blade. Including these components that
wear, degrade, or are consumed in the replaceable toner cartridge eliminates the need for a service
call when replacement is required.
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