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DocuColor 12/DCCS50
IBT Assembly
Reissue
Principles of Operation
Figure 1 IBT Belt Rolls and Assemblies
Figure 2 HVPS for IBT Assembly
Drive Roll
The Drive Roll is driven by the Drum Motor. As such, Its speed changes to conform to nominal
process speeds of as the 220 mm/sec., 130 mm/sec. and 60 mm/sec. depending upon to the
copy material in use.
Tension Roll
The Tension Roll is constantly being forced upward, against the IBT Belt, by an arm-and-spring
arrangement. This is done to keep the belt tight.
IBT Cleaning Assemblies
After the toner has been passed from the IBT Belt to the blank copy media, the residual toner is
removed from the belt by a plastic blade in the IBT Cleaner Assembly. This blade is retracted
by the Main Motor when the IOT CPU and Drive PWBAs engage the Cleaner Retract Clutch.
For color images, the blade touches the belt only one belt rotation in four. The toner falls into
the IBT Waste Toner Auger, part of the Waste Toner Auger Junction. (See Cleaning Systems.)
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