Xerox ColorQube 9303 Series Service Manual page 1719

Interlock Switches
Interlock switches are safety switches positioned on the main access doors of the machine.
When the access doors are opened the interlock switches interrupt power to the machine's
components ensuring that no moving parts that might cause injury are operational.
shows the locations of the main system interlock switches.
DADH Cover Interlock
Mid Door Inter-
Upper Door Inter-
lock
lock
Figure 2 Main system interlock switches.
ColorQube® 9303 Family
Front Door Inter-
lock
Lower Door Inter-
lock
Print Process
Once an image is processed, the print cycle begins. The printheads and drum are brought to
their operating temperatures and the ink levels are checked.
Figure 2
In the ready state, the print process consists of the following steps:
• Image Processing
• Ink Delivery
• Printhead Alignment
• Drum Oiling
• Printing
– Registration and Preheat
– Image Marking
– Transfix/Strip
• Purge System
• Duplex and Exit
Ink Delivery
The ink delivery system is comprised of four subsystems: ink loader, ink melt heaters, melt res-
ervoir and umbilicals. The system interacts directly with the customer at one end and with the
printheads at the other. The ink loader receives the ink from the customer and transports it to
the ink melter. The ink moves towards the melter via belt drive and gravity as it transitions from
the horizontal plane to the vertical. One melt plate per color, a total of four, acts to change the
ink from solid to liquid. The ink is forced on to the melt plate by gravity. The melt plates are
positioned at an angle to the horizontal and are shaped as to promote the liquid ink to flow off
of the plate and into the melt reservoir. The purpose of the melt reservoir is to route the ink
from four inputs to sixteen outputs, four colors to each of the four printheads. The melt reser-
voir provides a means of transporting the ink from the phase-change location to the printhead.
Air pressure is used to route the ink through the melt reservoir and into the umbilical on its way
to the printhead. The umbilical attaches to the melt reservoir at one end and the printhead at
the other. There are two umbilicals, each provides ink to two print heads.
February 2013
8-25
Figure 1
Principles of Operation