Liquid discharge apparatus and method for driving liquid discharge apparatus

A method for driving a liquid discharge apparatus,

• the liquid discharge apparatus including
• a liquid discharge head that includes a plurality of discharge sections including a first discharge section that is configured to discharge a liquid in a first pressure chamber in accordance with displacement of a first piezoelectric element, and
• a second discharge section that is configured to discharge a liquid in a second pressure chamber in accordance with displacement of a second piezoelectric element,
• a generation section that is configured to generate
• a first drive signal that is configured to displace the first piezoelectric element, and
• a second drive signal that is configured to displace the second piezoelectric element,
• a vibration detection section that is configured to detect remaining vibration that occurs in the first discharge section, after the first drive signal is supplied to the first piezoelectric element, and
• a temperature detection section that is configured to detect a temperature of the liquid discharge head,
• the first drive signal including a first drive pulse that is configured to displace the first piezoelectric element in a first period of a drive cycle,
• the second drive signal including a first reference potential maintaining element that maintains a reference potential in a first start period including a start point of the drive cycle, a first potential maintaining element that maintains a first potential in a second period of the drive cycle following the first period, and a second reference potential maintaining element that maintains the reference potential in a first end period that starts after an end of the second period and includes an end point of the drive cycle,
• the plurality of discharge sections include a third discharge section that is configured to discharge a liquid in a third pressure chamber in accordance with displacement of a third piezoelectric element,
• the third discharge section is provided in a position more distant from the first discharge section than the second discharge section,
• the generation section generates a third drive signal that displaces the third piezoelectric element, and
• the third drive signal includes a second drive pulse that displaces the third piezoelectric element to an extent in which the third discharge section does not discharge the liquid in the third pressure chamber in at least one of a period earlier than the second period in the drive cycle and a period later than the second period in the drive cycle and a fourth potential maintaining element that maintains the potential in the second period
• the method comprising:
• detecting the remaining vibration that occurs in the first discharge section in the second period;
• correcting the reference potential, based on the temperature detected by the temperature detection section;
• and
• maintaining the first potential at a constant potential, regardless of the temperature detected by the temperature detection section.