Patent ID: 8292397

Claim:
A liquid ejecting apparatus comprising: a liquid ejecting head that causes a variation in the pressure inside a pressure chamber by operating a pressure generating mechanism and ejects a liquid filled in the pressure chamber from a nozzle; a heating mechanism that heats the liquid inside the liquid ejecting head; a cooling mechanism that cools the liquid inside the liquid ejecting head; a driving signal generating unit capable of generating a driving signal containing a driving pulse controlling the pressure generating mechanism; and a control unit that controls the heating mechanism, the cooling mechanism, and the driving signal generating unit, wherein the control unit generates a first pulse which includes a first pulse component that changes the volume of the pressure chamber to enter a first state by driving the pressure generating mechanism, a second pulse component that maintains the first state for a predetermined time, and a third pulse component that changes the volume from the first state to a second state in which the volume of the pressure chamber is different from that of the first state, and which is used to remove bubbles inside the liquid filled in the pressure chamber by setting a variation in the pressure inside the pressure chamber to be larger than that of an ejection driving pulse ejecting the liquid to a landing target, and wherein the control unit heats the liquid by using the heating mechanism during an ejection process of ejecting the liquid using the ejection driving pulse, and cools the liquid by using the cooling mechanism during a maintenance process of recovering ejection ability of the liquid ejecting head by repeatedly applying the first pulse to the pressure generating mechanism.