Patent ID: 7654652

Claim:
An ink jet head comprising: a common ink chamber for storing an ink supplied from an ink supply part; an ink supply path for supplying the ink stored in the common ink chamber; pressure chambers to which the ink is supplied via the ink supply path; and nozzles for discharging the ink in the pressure chamber in accordance with a pressure change in the pressure chamber, the components being constructed by stacking a plurality of thin plate members, wherein the ink supply path is constructed by arranging a first ink supply path formed at the same level as that of the pressure chamber and at least one second ink supply path having the same function as that of the first ink supply path in parallel, and the first and second ink supply paths are constructed of the plurality of thin plate members interposed between a diaphragm plate and a nozzle plate, and wherein the second ink supply path is communicated with the pressure chamber formed at the same level as that of the first ink supply path.