C4170-90959
Image Formation System
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Toner Cartridge
Figure 5-7 Toner Cartridge Components
The toner cartridge contains the cleaning, conditioning, and developing stages of the image
formation process. These components are subject to wear and are built into the replaceable
toner cartridge. This eliminates the need for a service call when replacement is required.
Photosensitive Drum
Figure 5-8 Photosensitive Drum
The photosensitive drum is the heart of the image formation system. This drum’s special
properties allow an image to form on the drum's surface and then transfer to paper. The
drum is an aluminum cylinder coated with an organic-photoconductive material (OPC). The
photosensitive drum’s aluminum base is electrically connected to ground. The OPC material
becomes electrically conductive when exposed to light. Areas not exposed to light remain
nonconductive and maintain their negative charge.
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