PRINTING APPARATUS AND METHOD OF CONTROLLING PRINTING APPARATUS
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United States of America Patent
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Issued Date -
Apr 9, 2015
app pub date -
Oct 2, 2014
filing date -
Oct 8, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A printing apparatus includes a driving signal generation unit that generates a driving signal; a piezoelectric element that displaces according to the signal; a cavity whose inside is filled with an ink and in which a pressure in the inside is increased or decreased due to the displacement of the piezoelectric element based on the signal; an ejection unit that includes a nozzle communicating with the cavity and capable of ejecting the ink filled in the inside of the cavity by the increase or the decrease of the pressure in the inside of the cavity; a residual vibration detection unit that detects a change of an electromotive force based on the change of the pressure in the inside of the cavity; and an ejection state determination unit that determines an ejection state of the ink in the ejection unit based on the detection result of the residual vibration detection unit.
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