Patent ID: 7328982

Claim:
A liquid droplet discharge head, comprising: a liquid chamber flow channel which is filled with a liquid including an electrolytic liquid; a supply flow channel which branches from the liquid chamber flow channel; a pressure chamber which is connected to the supply flow channel and filled with the liquid supplied from the liquid chamber flow channel via the supply flow channel; a pressure generating device which is provided to correspond to the pressure chamber and pressurizes the liquid inside the pressure chamber; a nozzle which is connected to the pressure chamber and discharges a droplet of the liquid; and an electrolysis electrode which is formed on an inner wall of the nozzle in order to generate gas bubbles which reduce a flow channel resistance of the inner wall of the nozzle, wherein the electrolysis electrode generates, on the inner wall of the nozzle, minute gas bubbles which reduce the flow channel resistance of the inner wall of the nozzle when the pressure generating device pressurizes the liquid inside the pressure chamber in such a manner that the liquid flows in the nozzle.