Start-up and shut down of continuous inkjet print head
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United States of America Patent
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Oct 26, 2004
Grant Date -
Jun 17, 2004
app pub date -
Dec 17, 2002
filing date -
Dec 17, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A start-up and shutdown system for removing unwanted ink from a continuous inkjet printer comprises a porous element in flow communication with a cleaning chamber, both positioned adjacent to an ink supply chamber and nozzle plate. The porous element absorbs the unwanted ink from the surface of the nozzle plate. A negative pressure source is further provided to draw the absorbed ink from the porous element via the cleaning chamber. In one embodiment, fluid valve porous elements are provided to form a transient barrier to errant ink fluid in the form of a fluid bridge during start-up and shutdown of the printer.
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