Printing apparatus and method of controlling printing apparatus
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United States of America Patent
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Oct 20, 2015
Grant Date -
Mar 12, 2015
app pub date -
Sep 8, 2014
filing date -
Sep 9, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A printing apparatus includes an ejection unit including a piezoelectric element that is displaced according to a driving signal, and a nozzle capable of ejecting the liquid; a driving signal supply unit that supplies the driving signal; a detection unit that detects change of an electromotive force of the piezoelectric element; a determination unit that determines an ejection state of the liquid in the ejection unit based on the detection result of the detection unit; and a decision unit that is capable of performing a first process of deciding a waveform of the driving signal for inspection such that the liquid is not ejected from the nozzle when the driving signal for inspection is supplied to the piezoelectric element and a second process of correcting the waveform decided in the first process and deciding the corrected waveform as a waveform of the driving signal for inspection.
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