Patent ID: 7380917

Claim:
An inkjet head comprising: a flow-path unit including a plurality of plates that are stacked and define a common ink chamber and a plurality of ink flow paths communicating with the common ink chamber, wherein: the plurality of plates include a first plate and a second plate that are bonded to each other by an adhesive; the first plate defines a plurality of ink supply holes that make up a part of the ink flow paths and defines a first groove at least in a region where the first plate and the second plate do not contact each other, and the first groove is located in the region that is formed only in a part of the region; and the first groove extends in a direction, which intersects with a longitudinal direction of the inkjet head; a plurality of nozzles; a plurality of pressure chambers; and each of the plurality of ink flow paths extends from the common ink chamber through a corresponding one of the plurality of pressure chambers so as to communicate with a corresponding one of the plurality of nozzles.