Liquid Discharge Apparatus And Control Method Of Liquid Discharge Apparatus

A control method of a liquid discharge apparatus including a liquid discharge head that includes a plurality of discharge sections each including a nozzle that discharges liquid, a pressure chamber that communicates with the nozzle, and a piezoelectric element that is configured to apply a pressure fluctuation to the liquid in the pressure chamber in response to a drive signal, and a drive signal generation section that is configured to generate the drive signal, wherein

• the piezoelectric element includes
• a first electrode to which a first signal that maintains a potential at a first potential is supplied,
• a second electrode to which the drive signal is supplied, and
• a piezoelectric layer disposed between the first electrode and the second electrode, the method comprising:
• supplying a first drive signal to the second electrode of the piezoelectric element of the discharge section that discharges the liquid from the nozzle, and
• supplying a second drive signal to the second electrode of the piezoelectric element of the discharge section that does not discharge the liquid from the nozzle, wherein
• the first drive signal includes a discharge element that is an element of a potential change for displacing the piezoelectric element such that the liquid is discharged from the nozzle,
• the second drive signal includes
• a first potential maintenance element that maintains the potential at a reference potential,
• a first potential change element in which the potential changes from the reference potential to a second potential, the first potential change element being an element after the first potential maintenance element,
• a second potential maintenance element that maintains the potential at the second potential, the second potential maintenance element being an element after the first potential change element, and
• a second potential change element in which the potential changes from the second potential to the reference potential, the second potential change element being an element after the second potential maintenance element, and
• the second potential is equal to or lower than the first potential and higher than a potential corresponding to a coercive electric field of the piezoelectric element.