Printhead with printer fluid check valve
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United States of America Patent
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-
Nov 10, 2020
Grant Date -
Jan 11, 2018
app pub date -
Apr 27, 2015
filing date -
Apr 27, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
In some examples, a printhead can include a main printer fluid line, a firing chamber in fluid communication with the main printer fluid line to receive printer fluid from the main printer fluid line, and a resistor positioned in the firing chamber. The resistor can, for example, receive an electronic current to cause the resistor to heat up and eject printer fluid droplets from the printhead. The printhead can further include a photolithographically fabricated check valve positioned in the firing chamber. The check valve can, for example, be openable to allow filling of the firing chamber with printer fluid and closeable to at least partially seal the main printer fluid line from printer fluid blowback caused by the resistor.
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