Inkjet head and inkjet recording device

An inkjet head, comprising:

• a nozzle plate configured to form multiple nozzles for discharging
• 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 a retention substrate, which forms a common liquid chamber for supplying ink to the liquid supply chamber, is jointed at a side of diaphragm of the passage substrate;
• and
• the common liquid chamber communicates with a plurality of individual liquid chambers of the passage substrate through the ink supply ports.

An inkjet head recording device which includes 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.