Patent ID: 7815295

Claim:
A liquid discharge device, comprising: a casing comprising a space for housing a main tank; a carriage capable of moving; a discharge head arranged on the carriage; a sub tank arranged on the carriage, the sub tank communicating with the discharge head, wherein the sub tank is connected with the main tank when the carriage is located at a predetermined position, and the sub tank is disconnected with the main tank when the carriage is located at positions other than the predetermined position; an energy supply device that supplies energy to liquid within the main tank such that the liquid within the main tank is discharged; and a controller that controls the energy supply device such that the liquid within the main tank is supplied to the sub tank when the carriage is located at the predetermined position, wherein the controller controls the energy supply device such that the liquid within the main tank is discharged before the carriage arrives at the predetermined position.