Patent ID: 8857935
Filing Date: 2014-10-14
Classification: B41J

Abstract:
1. A liquid ejecting apparatus comprising: a reference drive signal generation section that generates a reference drive signal; a signal modulation section that modulates the reference drive signal to generate a modulation reference drive signal; a signal amplification section that amplifies the modulation reference drive signal using switching elements to generate a modulation drive signal; a signal conversion section that converts the modulation drive signal to a drive signal; a piezoelectric element that deforms in response to the drive signal; a pressure chamber that expands or contracts due to the deformation of the piezoelectric element; and a nozzle opening portion that communicates with the pressure chamber, wherein periods of alternating current components contained in the modulation drive signal are shorter than a duration of a maximum voltage or a minimum voltage contained in the reference drive signal, and are longer than a total time of turn-on delay times and turn-off delay times of the switching elements.