Patent ID: 7429098

Claim:
A liquid droplet discharge unit comprising: a plurality of nozzles; a plurality of pressure chambers in which liquid is filled, each being communicated with at least one of the plurality of nozzles; a plurality of drive sections each of which changes the volume of one of the plurality of pressure chambers to allow a liquid droplet to be discharged from the nozzle; a plurality of drive elements, each of which causes one of the plurality of drive sections to be driven; a heat pipe which is in thermal communication with the plurality of drive elements, and moves heat to one end in an axial direction of the heat pipe; a heat-receiving member which is in thermal communication with one end portion in the axial direction of the heat pipe to receive heat from the heat pipe; and a tank that stores liquid and a liquid feed path supplying liquid from the tank to the pressure chambers, wherein the heat-receiving member is in thermal communication with the liquid feed path.