Patent ID: 8596760

Claim:
A droplet ejection head, comprising: a nozzle plate which has a nozzle aperture for ejecting droplets of liquid; a flow channel structure including a pressure chamber which contains the liquid and is connected to the nozzle aperture through a flow channel; and a pressure generating element which applies pressure to the liquid in the pressure chamber, wherein an ejection surface of the nozzle plate where the droplets of the liquid are ejected is made of a fluorine-containing DLC (diamond-like carbon) film, the nozzle plate is constituted of a flat substrate and the fluorine-containing DLC film formed onto the flat substrate, wherein the ejection surface of the nozzle plate has a protruding and recessing structure caused by a protruding and recessing structure of the fluorine-containing DLC film, and wherein the fluorine-containing DLC film has a laminated structure formed of a plurality of layers and at least one or more of the plurality of layers being formed only on the protruding structure of the fluorine-containing DLC film.