Patent ID: 6964469

Claim:
A liquid droplet ejection apparatus comprising: a substrate for holding on a surface thereof liquid to be ejected; and liquid droplet ejection units provided on the substrate, for pushing the liquid to be ejected by a pushing stroke higher than a height of a liquid surface of said liquid to be ejected held on the substrate, wherein there is no orifice plate to determine a projection size on the substrate surface of an ejected liquid droplet, wherein said ejected liquid droplet is formed, in accordance with a dimension of one of said liquid droplet ejection units protruding from the liquid surface of said liquid to be ejected in a direction of the substrate surface, such that said liquid surface rises and is severed in a projection size of substantially 1.0-1.5 times the dimension of said liquid droplet ejection units in the direction of the substrate surface, and wherein a space existing in a liquid droplet ejecting direction of said liquid droplet ejection units is, substantially, an open space.