Backpressure control unit, liquid ejecting head, and liquid ejecting apparatus
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United States of America Patent
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Jun 16, 2015
Grant Date -
Jul 17, 2014
app pub date -
Dec 19, 2013
filing date -
Jan 16, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A backpressure control unit that introduces a liquid from an external liquid holding unit and supplies the liquid to a main head unit for ejecting the liquid via a nozzle opening includes a flow channel member having an introduction channel, a valve member, and a supply channel, and a cover that that combines a base portion and a cover portion and houses the flow channel member therewithin. This provides a backpressure control unit that improves yields by absorbing discrepancies in properties of backpressure control valves to the greatest extent possible while at the same time making it possible to change designs in a flexible manner.
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