rotating, the DC controller determines that the primary-transfer-disengagement mechanism has failed,
and notifies the formatter.
Figure 5-24 Three states of primary-transfer-roller engagement and disengagement
Four colors are disengaged
Four colors are engaged
Only black is engaged
Y
M
C
K
Y
M
C
K
Y
M
C
K
Y
M
C
K
Y
M
C
K
Y
M
C
K
Fuser motor
FUSER MOTOR CONTROL
ITB cleaning
The cleaning blade in the ITB cleaner scrapes the residual toner off the ITB surface. The drum motor
(M5) drives the residual toner feed screw. The screw feeds the residual toner to the residual toner feed
unit. The residual toner feed motor (M12) drives the residual toner feed screw. The residual toner feed
144 Chapter 5 Theory of operation ENWW
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