Self-cleaning print head for ink jet printer
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United States of America Patent
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Jun 10, 2003
Grant Date -
N/A
app pub date -
Sep 18, 2000
filing date -
Sep 18, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A self-cleaning print head for an ink jet printer directs ink to a substrate to be marked. The print head has a drop generator with a body that has a front face, an ink supply conduit and at least one orifice extending through the front face. The orifice also defines a nozzle for ejecting ink droplets. A solvent supply conduit is provided for supplying solvent to the front face of the drop generator, and a drain conduit is provided for suctioning the solvent from the front face and into the drain conduit. The supply conduit and the drain conduit have openings on the front face disposed relative to each other and the orifice(s) so that the solvent released from the supply conduit moves along the front face, adjacent the orifice(s) and into the drain conduit regardless of the spatial orientation of the print head. This allows the solvent to move residue from the front face and into the drain conduit no matter the orientation of the print head.
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