Liquid ejecting apparatus

A liquid ejecting apparatus comprising:

• a liquid ejecting head that has a nozzle surface in which a nozzle that ejects liquid is open;
• a liquid supply path which is coupled to a liquid inlet of the liquid ejecting head and through which the liquid is supplied to the liquid ejecting head;
• a liquid discharge path which is coupled to a liquid outlet of the liquid ejecting head and through which the liquid is discharged from the liquid ejecting head;
• a supply-side pressure adjustment mechanism that adjusts a pressure in a supply-side liquid chamber provided in the liquid supply path to a first pressure at which a gas-liquid interface formed at the nozzle is maintained;
• a discharge-side pressure adjustment valve that is provided in the liquid discharge path, includes a discharge-side liquid chamber coupled to the liquid outlet and a discharge-side valve body, and adjusts a pressure of the liquid to be supplied to the liquid ejecting head to a pressure at which the gas-liquid interface formed at the nozzle is maintained, the discharge-side valve body being configured to be opened when a pressure in the discharge-side liquid chamber becomes a second pressure which is lower than the first pressure and a pressure outside the discharge-side liquid chamber and at which the gas-liquid interface formed at the nozzle is maintained, to cause the discharge-side liquid chamber to communicate with a fluid introduction path through which fluid is introduced into the discharge-side liquid chamber from an outside of the discharge-side liquid chamber;
• and
• a flow mechanism that is coupled to the discharge-side liquid chamber by a return flow path and is configured to discharge the liquid in the liquid ejecting head toward the liquid discharge path via the discharge-side liquid chamber of the discharge-side pressure adjustment valve.