Liquid ejecting apparatus and head unit
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United States of America Patent
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Oct 25, 2016
Grant Date -
Mar 5, 2015
app pub date -
Aug 14, 2014
filing date -
Aug 30, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A liquid ejecting apparatus includes a signal modulation section that causes an original drive signal to be pulse-modulated to generate a modulation signal, a signal amplification section that amplifies the modulation signal to generate an amplification modulation signal, a coil that smooths the amplification modulation signal to generate a drive signal, a piezoelectric element that deforms when the drive signal is applied thereto, a cavity that expands or contracts due to a deformation of the piezoelectric element, and a nozzle that communicates with the cavity and ejects a liquid in accordance with an increase/decrease of a pressure inside the cavity. The coil is a ferrite core-type coil, and a core gap is provided to be equal to or wider than 1.1 mm.
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