Patent ID: 8596733

Claim:
A liquid ejecting apparatus, comprising: a liquid ejecting head which ejects liquid; a first tank which accommodates the liquid; a second tank which accommodates the liquid; a first liquid residual amount detector which detects a residual amount of liquid in the first tank; a second liquid residual amount detector which detects a residual amount of liquid in the second tank; a first flow path which makes the first tank and the second tank communicate with each other; a second flow path which makes at least one of the first tank and the second tank communicate with the liquid ejecting head; a liquid transfer unit which is capable of transferring liquid in the first tank into the second tank through the first flow path and transferring liquid in the second tank into the first tank through the first flow path; an ON/OFF detector which detects that power of the liquid ejecting apparatus is turned ON/OFF; and a controller which controls the liquid transfer unit, and when the ON/OFF detector detects that the power of the liquid ejecting apparatus is switched to an ON state from an OFF state, the controller controls the liquid transfer unit such that liquid is transferred to a tank of which residual amount of liquid is smaller from a tank of which residual amount of liquid is larger based on the residual amount of liquid in the first tank detected by the first liquid residual amount detector and the residual amount of liquid in the second tank detected by the second liquid residual amount detector; wherein a power shut-off time detector which detects a power shut-off interval until the liquid ejecting apparatus is powered ON since the liquid ejecting apparatus has been powered OFF is provided, and when the ON/OFF detector detects that the power of the liquid ejecting apparatus is switched to the ON state from the OFF state and the power shut-off time detector detects that the power shut-off interval is equal to or more than a predetermined interval, the controller controls the liquid transfer unit such that after liquid is transferred to a tank of which residual amount of liquid is smaller from a tank of which residual amount of liquid is larger, a liquid transferring direction between the tanks is made reverse and liquid is transferred again.