Focus-activated acoustic ejection
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United States of America Patent
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Oct 1, 2013
Grant Date -
Jul 28, 2011
app pub date -
Jan 26, 2011
filing date -
Jan 26, 2010
priority date (Note) -
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Abstract
To ejecting a droplet from a reservoir, the reservoir holding a fluid is moved with respect to an acoustic ejector. As the reservoir and ejector move closer together, the acoustic ejector sends one or more interrogation pulses towards the reservoir. Based on the interrogation pulses, the system determines when the movement of the reservoir has placed a free surface of the fluid in a position where a droplet can be ejected.
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