General information 1-13
7510
Transfer belt unit assembly
The transfer belt unit assembly contains the four 1st transfer rolls; these 1st transfer rolls are referred to as the
CMYK transfer rolls. The CMYK transfer rolls are positively charged to remove the developed toner image from
the four drums. The negatively charged toner image is attracted by positive charges on the surface of the
transfer belt. Thus, the toner image is transferred from the drum surface to the transfer belt surface. During black
(K) only, operation the CMY transfer rolls are retracted to reduce wear on the transfer belt surface and CMY
drums.
Transfer belt steering motor
This motor is used to ensure that the transfer belt is properly tracking. If the transfer belt starts to track off-center
then the transfer belt steering motor will activate to keep the transfer belt centered and tracking properly.
2nd transfer roll assembly
The 2nd transfer roll assembly applies positive charges to the rear surface of the media when the media passes
between the 2nd transfer roll assembly and the transfer belt. The negatively charged toner image is attracted by
positive charges on the surface of the media. Thus, the toner image is transferred from the transfer belt surface
to the media surface.
2nd transfer roll retract motor
The 2nd transfer roll retract motor is used to retract the 2nd transfer roll assembly when printing processes are
not occurring.
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