Theory of Operation 2-15
The level of the ink in the reservoir is kept at a constant level. If the pressure purge
tubing is pinched, the printhead may not purge properly. In addition, because the
purge tubing also acts as a vent to atmosphere when not purging, a more serious
failure may occur if the ink overfills. Overfilling may trap air in the reservoir, which
would prevent the melted ink from entering the reservoir.
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When servicing the printer be careful of the purge system as it passes the
printhead. If a damaged wiper blade of the purge system catches on the
printhead, it could propel hot liquid ink upward into your face.
s8500-018
Purge Pump
Solenoid Valve
Purge Tube
Printhead
Printhead
Drum
Wiper Assembly
Wiper
30 Sec
(Open During Wiper Action)
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