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Cleaning Unit
The Cleaning Unit (CU) is a Customer Replaceable Unit (CRU) that cleans and applies a
release agent to the drum. The customer periodically replaces the CU as directed by status
messages.
The CU operates until the release agent is depleted from the internal reservoir and roller. The
CU actively maintains 'life remaining' and other information in an internal memory device. This
'life' information is calculated from the initial amount of release agent in the reservoir, data from
two level sensors contained within the cleaning unit, and software algorithms in the machine.
One sensor is a float with a magnet and reed switch that is triggered when approximately 75%
of the oil is used. The second sensor is a pressure transducer that detects when the reservoir
is completely empty. The percentage of 'life remaining' and 'number of prints remaining' infor-
mation is frequently sent to the Single Board Controller PWB. Since the 'life remaining' data is
stored on a memory device internal to the CU, it is retained if the CU is moved from one
machine to another.
Figure
16.
Figure 16 Cleaning unit location
ColorQube® 9303 Family
Transfix Assembly
The transfix linkages apply force to the transfix roller to bond the image to the media.
illustrates the transfix linkages.
Figure 17 Transfix assembly location
February 2013
8-11
Figure 17
Principles of Operation
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