Liquid ejection hole orientation for web guide
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United States of America Patent
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Mar 27, 2018
Issued Date -
N/A
app pub date -
May 19, 2016
filing date -
Dec 2, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A non-contact web guide includes a wall having a curved exterior surface and a hollow interior containing a pressurized liquid. A first row of liquid ejection holes is provided in proximity to the web guide entry position having axes that are inclined toward a downstream direction, and a second row of liquid ejection holes is provided in proximity to the web guide exit position having axes that are inclined toward an upstream direction. An intermediate array of liquid ejection holes is optionally provided. The pressurized liquid flows through the liquid ejection holes to force the web of media away from the bearing surface of the web guide. This configuration of liquid ejection holes provides the advantage that stable web guidance is achieved at low liquid flow rates.
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