LIQUID DISCHARGING APPARATUS, HEAD UNIT, AND CONTROL METHOD OF LIQUID DISCHARGING APPARATUS

摘要

A liquid discharging apparatus includes a driving signal creation section that creates a driving signal, a discharge section provided with a piezoelectric element, and a pressure chamber, and a detection section that is capable of detecting residual vibrations. The driving signal creation section is capable of creating a signal having an inspection waveform of which a potential of a first period is a first potential, a potential of a second period is a second potential, and a potential of a third period is a third potential, as the driving signal. The first potential is a potential that is between the second potential and the third potential, and the internal volume of the pressure chamber in a case in which the driving signal is the second potential is smaller than the internal volume of the pressure chamber in a case in which the driving signal is the third potential.

主权项

1. A liquid discharging apparatus comprising:
a driving signal creation section that creates a driving signal; a discharge section provided with
a piezoelectric element that is displaced depending on changes in potential of the driving signal,a pressure chamber that causes changes in an internal volume thereof depending on displacement of the piezoelectric element, anda nozzle that is in communication with the pressure chamber, and is capable of discharging a liquid with which inside of the pressure chamber is filled depending on changes in the internal volume of the pressure chamber; and a detection section that is capable of detecting residual vibrations that are generated in the discharge section after displacement of the piezoelectric element, wherein the driving signal creation section is capable of creating a signal having an inspection waveform of which
a potential of a first period is a first potential,a potential of a second period, which is after the first period, is a second potential, anda potential of a third period, which is after the second period, is a third potential, as the driving signal, wherein the first potential is a potential that is between the second potential and the third potential, and wherein the internal volume of the pressure chamber in a case in which the driving signal is the second potential is smaller than the internal volume of the pressure chamber in a case in which the driving signal is the third potential.