Liquid discharge apparatus, control method of liquid discharge apparatus, and control program of liquid discharge apparatus
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United States of America Patent
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May 2, 2017
Grant Date -
Sep 29, 2016
app pub date -
Jan 8, 2016
filing date -
Mar 27, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A liquid discharge apparatus includes a discharge unit including a piezoelectric element that is displaced in response to a drive signal, a pressure chamber of which an inner pressure is increased or decreased by the piezoelectric element, and a nozzle which is in communication with the pressure chamber and discharges liquid filling the pressure chamber, depending on an increase or a decrease in the inner pressure of the pressure chamber, a detection unit that detects residual vibration occurring in the discharge unit according to a potential change of the drive signal that is supplied to the piezoelectric element, and a determination unit that determines a discharge state, in which the detection unit outputs a first detection signal and a second detection signal, and the determination unit determines the discharge state, based on the first detection signal and the second detection signal.
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