Patent ID: 8091994

Claim:
A liquid droplet jetting apparatus which jets droplets of a liquid onto an object, the apparatus comprising: a first head in which a first nozzle, through which a first droplet of the liquid is jetted, is formed; a second head in which a second nozzle, through which a second droplet of the liquid is jetted and which is located at a higher position than the first nozzle, is formed; a liquid tank which supplies the liquid to the first and second heads and which is located at a lower position than the first and second nozzles; and a plurality of tubes via which the first head, the second head and the liquid tank are connected; wherein the first head is connected to an end of one tube of the tubes, and the liquid tank is connected to the other end of the one tube; wherein the second head is connected to the first head via an another tube which is different from the one tube such that the second head is connected to the liquid tank via the first head; wherein the first head is provided with the ink outlet portion which is connected to the another tube and the second head is provided with the ink inlet portion which is connected to the another tube; and wherein the ink inlet portion is located at a higher position than the ink outlet portion such that a pressure head of the liquid at the ink inlet portion is higher than that at the ink outlet portion.