Patent ID: 7810908

Claim:
An ink-jet head comprising: a passage unit that has a plurality of pressure chambers arranged along a plane and communicating with a plurality of ink ejection ports that are formed on an ink discharging face; an actuator unit that is supported by a support face of the passage unit opposite to the ink discharging face, that has a plurality of individual electrodes each confronting the pressure chambers, and that changes in volume of the pressure chambers; a flexible printed circuit that has a plurality of wirings which supply driving signals to the individual electrodes, and that is provided with a connection area where the respective wirings are electrically connected with corresponding individual electrodes and which confronts the actuator unit, and a confronting area continuous with the connection area and confronting not the actuator unit but the passage unit; and a covering that includes a spaced region, a fixed region, and a protrusion region, wherein the spaced region has a spaced face spaced apart from the connection area with respect to a direction perpendicular to the ink discharging face, the fixed region has a fixed face that protrudes toward the passage unit from the spaced face and is fixed to the support face as well, the protrusion region has a leading face that protrudes toward the passage unit from the spaced face, and the confronting area is interposed between the leading face and the passage unit; wherein a protruding length of the protrusion region from the spaced face is equal or larger than that of the fixed region, wherein a recess is formed on the support face of the passage unit at a position confronting the leading face, wherein both ends of the leading face are interposed between both ends of the opening of the recess with respect to a draw-out direction that is parallel to the support face and is toward the confronting area from the connection area, wherein the protrusion region is spaced apart from an inner face of the recess, and wherein the confronting area of the flexible printed circuit passes through the recess.