Patent ID: 8556396

Claim:
An inkjet head, comprising: a nozzle plate configured to form multiple nozzles for discharging ink; a passage substrate configured to be jointed to the nozzle plate, and in which an individual liquid chamber leading to a nozzle, and a liquid supply chamber connected to the individual liquid chamber through an individual passage are formed for each of the multiple nozzles; and a diaphragm configured to form a piezoelectric element which is laminated on a side opposite to the nozzle plate of the passage substrate and includes a lower electrode, a piezoelectric body, and an upper electrode, wherein the liquid supply chamber formed for each of the multiple nozzles is compartmented by a bulkhead from an other liquid supply chamber, and each of the liquid supply chamber and the other liquid supply chamber includes multiple ink supply ports, and wherein an ink passage is provided at the bulkhead between the liquid supply chamber and the other liquid supply chamber adjacent to the liquid supply chamber.