Patent ID: 8408675

Claim:
A liquid ejecting head unit comprising: a liquid ejecting head having a nozzle formation surface in which a nozzle row that includes a plurality of nozzles ejecting liquid which are provided in a row is formed; and a head fixing member to which the liquid ejecting head is fixed in a state where intermediary members are interposed therebetween, wherein the liquid ejecting head has intermediary member fixing portions to which the intermediary members are fixed and which are respectively provided on both sides with a head main body interposed therebetween, each of the intermediary members has an intermediary member main body portion having a base surface which comes into contact with the head fixing member, and back end-side protrusion portions, reference plane protrusion portions, and leading end-side protrusion portions, which are convex portions that rise from the intermediary member main body portion to direct toward the intermediary member fixing portion side from the head fixing member side and which are respectively formed toward a leading end portion of each intermediary member fixing portion in relation to a direction of the nozzle row, at both end portions in a width direction perpendicular to the nozzle row, each of the reference plane protrusion portions has a surface that becomes a reference plane which comes into contact with the intermediary member fixing portion, thereby defining the height position of the liquid ejecting head with respect to the head fixing member, each of the back end-side protrusion portions is integrally formed contiguous to each of the reference plane protrusion portions on the base end portion side in relation to the direction of the nozzle row such that the height position of the surface thereof becomes equal to or less than the reference plane, and each of the leading end-side protrusion portions is integrally formed contiguous to each of the reference plane protrusion portions on the leading end portion side in relation to the direction of the nozzle row such that the height position of the surface thereof becomes equal to or less than the reference plane.