Patent ID: 7836599

Claim:
A method of manufacturing an ink head, comprising steps of: preparing a stack of a plurality of metal plates; heating the stack under pressure to bond the plurality of metal plates and produce an incomplete passage unit; causing a first surface of a top metal plate to adhere to the incomplete passage unit by means of an adhesive to complete a passage unit from the incomplete passage unit, wherein penetrating holes which penetrate the top metal plate from the first surface to a second surface of the top metal plate are formed within the top metal plate, wherein the second surface is opposite the first surface, and the penetrating holes form pressure chambers when the top metal plate has been adhered to the incomplete passage unit, and the passage unit comprises a passage including the pressure chambers and is configured to pass ink therethrough; and fixing an actuator unit to the second surface of the top metal plate of the completed passage unit, such that the penetrating holes are covered by the actuator unit, wherein the actuator unit deforms to change pressure within the pressure chambers.