February 2013
8-78
ColorQube® 9303 Family
Principles of Operation
Figure 29
. Cleaning unit processing
Figure 29 Cleaning unit management
Cleaning unit Components
The cleaning unit comprises the following components:
•
Oil roller
•
Metering blade
•
Cleaning unit drive motor
•
Solenoid valve
•
Sump pump
•
Delivery pump
•
Oil return
Oil Roller
The oil supply roller is loaded with oil that is applied to the drum when the roll is moved into
contact with the drum surface. It is made from a continuous web wrapped into a roll and then
loaded with oil. The amount of oil applied to the drum is dependent on the penetration of the
roll into the drum surface and the amount of oil left in the roll. The rate of oil migration through
the roll is another factor in determining the oil applied to the drum surface.
Metering Blade
The metering blade meters the oil applied to the drum by the roller. The blade is spring loaded
against the drum. The amount of blade force on the drum determines the oil rate. In addition,
the roughness of the drum, as well as the edge condition of the blade have an affect on the oil
rate. The metering blade is required to clean any ink that has not been transferred to paper off
of the drum.
Cleaning Unit Drive
The roll and blade are driven into engagement with the drum via a stepper motor and the
cleaning unit camshaft,
Figure 31
. The camshaft supports two sets of cams for independently
actuating the roller and blade assembly. The stepper motor must be able to move fast enough
to disengage the cleaning unit in sufficiently short time so as to minimize the size of the oil bar.
In addition, the timing between the two sets of cams are such that the roller touches the drum
after the blade has been dropped and leaves the drum before the blade has been lifted. This
order of disengagement minimizes the size of the oil bar. The motor that drives the cleaning
unit engagement is a 1.8 degree stepper motor. This motor is operated at 8 microsteps per nat-
ural motor step. The resistance of the motor is 1.8 ohms and the current necessary to drive the
motor is 3 amps.
Oil Return
Figure 30
. The return oil wick is used to recirculate the oil that is metered off of the drum by the
blade back into the roll to be reapplied to the drum. The oil rate through this wick must be
greater than the amount of oil metered off the drum by the metering blade. The gel shield pre-
vents the gel (oil and ink mixture) that is removed from the drum by the metering blade from
contaminating the oil roller. The shield directs the gel away from the roll and accumulates the
gel in the housing. The shield also acts as a spring to hold the wick material against the oil
roller.
Summary of Contents for ColorQube 9303 Series
Page 1: ...Xerox ColorQube 9303 Family Service Manual 708P90290 February 2013...
Page 4: ...February 2013 ii ColorQube 9303 Family Introduction...
Page 18: ...February 2013 1 2 ColorQube 9303 Family Service Call Procedures...
Page 92: ...February 2013 2 68 ColorQube 9303 Family 05F Status Indicator RAPs...
Page 104: ...February 2013 2 80 ColorQube 9303 Family 12 701 00 65 Status Indicator RAPs...
Page 200: ...February 2013 2 176 ColorQube 9303 Family 12N 171 Status Indicator RAPs...
Page 292: ...February 2013 2 268 ColorQube 9303 Family 16D Status Indicator RAPs...
Page 320: ...February 2013 2 296 ColorQube 9303 Family 42 504 00 42 505 00 Status Indicator RAPs...
Page 500: ...February 2013 2 476 ColorQube 9303 Family 94B Status Indicator RAPs...
Page 648: ...February 2013 3 2 ColorQube 9303 Family Image Quality...
Page 653: ...February 2013 3 7 ColorQube 9303 Family IQ 1 Image Quality Figure 1 IQ defects 1...
Page 654: ...February 2013 3 8 ColorQube 9303 Family IQ 1 Image Quality Figure 2 IQ defects 2...
Page 655: ...February 2013 3 9 ColorQube 9303 Family IQ 1 Image Quality Figure 3 IQ defects 3...
Page 656: ...February 2013 3 10 ColorQube 9303 Family IQ 1 Image Quality Figure 4 IQ defects 4...
Page 657: ...February 2013 3 11 ColorQube 9303 Family IQ 1 Image Quality Figure 5 IQ defects 5...
Page 658: ...February 2013 3 12 ColorQube 9303 Family IQ 1 Image Quality Figure 6 IQ defects 6...
Page 660: ...February 2013 3 14 ColorQube 9303 Family IQ 1 Image Quality Figure 9 IQ defects 9...
Page 661: ...February 2013 3 15 ColorQube 9303 Family IQ 1 Image Quality Figure 10 IQ defects 10...
Page 662: ...February 2013 3 16 ColorQube 9303 Family IQ 1 Image Quality Figure 11 IQ defects 11...
Page 663: ...February 2013 3 17 ColorQube 9303 Family IQ 1 Image Quality Figure 12 IQ defects 12...
Page 664: ...February 2013 3 18 ColorQube 9303 Family IQ 1 Image Quality Figure 13 IQ defects 13...
Page 728: ...February 2013 3 82 ColorQube 9303 Family IQ 29 IQ 30 Image Quality...
Page 736: ...February 2013 3 90 ColorQube 9303 Family TP 15 Image Quality Figure 2 Media path test pages...
Page 758: ...February 2013 3 112 ColorQube 9303 Family IQS 7 IQS 8 Image Quality...
Page 778: ...February 2013 4 20 ColorQube 9303 Family REP 1 9 Repairs Adjustments...
Page 794: ...February 2013 4 36 ColorQube 9303 Family REP 3 10 Repairs Adjustments...
Page 1144: ...February 2013 4 386 ColorQube 9303 Family REP 94 1 Repairs Adjustments...
Page 1176: ...February 2013 4 418 ColorQube 9303 Family ADJ 62 3 ADJ 62 4 Repairs Adjustments...
Page 1182: ...February 2013 4 424 ColorQube 9303 Family ADJ 75 3 Repairs Adjustments...
Page 1184: ...February 2013 4 426 ColorQube 9303 Family ADJ 82 1 Repairs Adjustments...
Page 1186: ...February 2013 4 428 ColorQube 9303 Family ADJ 91 1 Repairs Adjustments...
Page 1552: ...February 2013 6 260 ColorQube 9303 Family dC140 General Procedures Information...
Page 1576: ...February 2013 6 284 ColorQube 9303 Family dC640 General Procedures Information...
Page 1578: ...February 2013 6 286 ColorQube 9303 Family dC708 dC715 General Procedures Information...
Page 1600: ...February 2013 7 2 ColorQube 9303 Family Wiring Data...
Page 1696: ...February 2013 8 2 ColorQube 9303 Family Principles of Operation...
Page 1808: ...February 2013 8 114 ColorQube 9303 Family Principles of Operation...
Page 1809: ...XEROX EUROPE...
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