LIQUID DISCHARGING APPARATUS AND CONTROL METHOD OF LIQUID DISCHARGING APPARATUS

摘要

A liquid discharging apparatus includes a housing, a head unit that is provided in the housing, and includes a discharge section, which is provided with a piezoelectric element that is displaced depending on a driving signal, a driving signal creation section that creates the driving signal, a temperature information creation section that creates temperature information, which shows a temperature of a predetermined location inside the housing, a detection signal creation section that creates a detection signal by amplifying a residual vibration signal, which shows residual vibrations that occur in the discharge section after the piezoelectric element is displaced depending on the driving signal, with an amplification factor that depends on a temperature, which the temperature information shows, and a discharge state determination section that determines a discharge state of the liquid in the discharge section on the basis of the detection signal.

主权项

1. A liquid discharging apparatus comprising:
a housing;
a head unit that is provided in the housing, and includes a discharge section, which is provided with a piezoelectric element that is displaced depending on a driving signal, a pressure chamber, the internal pressure of which is increased and decreased by displacement of the piezoelectric element, and a nozzle, which is in communication with the pressure chamber, and is capable of discharging a liquid, which the inside of the pressure chamber is filled with, depending on increases and decreases in the internal pressure of the pressure chamber;a driving signal creation section that creates the driving signal;a temperature information creation section that creates temperature information, which shows a temperature of a predetermined location inside the housing;a detection signal creation section that creates a detection signal by amplifying a residual vibration signal, which shows residual vibrations that occur in the discharge section after the piezoelectric element is displaced depending on the driving signal, with an amplification factor that depends on a temperature, which the temperature information shows; anda discharge state determination section that determines a discharge state of the liquid in the discharge section on the basis of the detection signal.