Patent ID: 7571990

Claim:
An inkjet head comprising: a first passage member comprising an ink ejection surface having a plurality of ink ejection holes formed therethrough; and a second passage member having at least one ink passage formed therein, wherein the at least one ink passage comprises: a supply port configured to receive an ink from an outside of the second passage member and to dispense the ink into the at least one ink passage; a discharge port configured to dispense the ink from the at least one ink passage to the outside of the second passage member; an outflow port configured to dispense the ink from the at least one ink passage toward the first passage member, wherein the supply port and the discharge port are each positioned adjacent to a predetermined end of the second passage member; a first ink passage portion which is configured to be in fluid communication with the supply port and extends from the supply port toward the outflow port; and a second ink passage portion which is configured to be in fluid communication with the discharge port and extends from the discharge port toward the outflow port, wherein the first ink passage portion and the second ink passage portion are configured to be in fluid communication with each other in an area adjacent to the outflow port.