Patent ID: 8136921

Claim:
A liquid droplet ejection apparatus comprising: a flow path unit including: first and second pressure chambers for first and second liquids, respectively; and first and second nozzles communicating with the first and second pressure chambers, respectively, each of the first and second nozzles including a tip opening; and a pressure generating unit which generates a pressure for the liquids in the first and second pressure chambers to eject the liquids through the tip openings of the first and second nozzles; wherein a diameter of the tip opening of the first nozzle is larger than that of the tip opening of the second nozzle; wherein both the first and second nozzles extend in a first direction; wherein a length of the first nozzle is shorter than that of the second nozzle in the first direction; and wherein each of the first and second nozzles are taper-shaped flow paths which decrease in diameter toward the tip opening thereof.