Liquid supply device, liquid ejection device, and control method for pump
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United States of America Patent
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Nov 27, 2018
Grant Date -
Jan 4, 2018
app pub date -
Jun 19, 2017
filing date -
Jun 30, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A liquid supply device includes: a force sensor which outputs an output value corresponding to a force of expansion of a detection target site of a blockage detection tube communicating with a liquid election unit for ejecting a liquid; a pump for sending out a liquid in the blockage detection tube toward the liquid ejection unit; and a control unit which stops an operation of the pump when the output value reaches a threshold. The control unit decides the threshold, using, as a reference value, the output value acquired when a predetermined condition is satisfied including that the detection target site is filled with the liquid and that the pump is stopped.
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