Liquid ejection head and liquid ejection apparatus

摘要

A liquid ejection head includes a flow path unit having pressure generating chambers, a case head that is mounted to the flow path unit, and a piezoelectric element unit having a fixation member and piezoelectric elements, an adhesive surface of the fixation member being adhered to the case head by using a first adhesive and a second adhesive, and the piezoelectric elements being bonded to a piezoelectric element attachment surface of the fixation member which intersects the adhesive surface and also attached to islands that oppose the pressure generating chambers of the flow path unit, wherein the second adhesive has curing time shorter than that of the first adhesive, and the first adhesive has adhesion strength higher than that of the second adhesive and is applied on a first adhesive surface on the adhesive surface of the fixation member which is subject to a reaction force of the piezoelectric elements.

主权项

1. A liquid ejection head comprising:
a vibration plate sealing a plurality of pressure generating chambers that communicate with nozzles through which liquid is ejected; a case head that is mounted on the vibration plate; piezoelectric elements that are mounted on the case head; and a fixation member bonded to the piezoelectric elements, wherein one face facing the vibration plate side of the fixation member is adhered to the case head by using a first adhesive and a second adhesive, and the piezoelectric elements are bonded to the fixation member at a surface that is transverse to the one face of the fixation member and wherein the piezoelectric elements are also attached to the vibration plate, wherein: the first adhesive has adhesion strength higher than an adhesion strength of the second adhesive and the first adhesive is applied on a first adhesive surface on the one face of the fixation member overlapping the piezoelectric elements in an arrangement direction of the piezoelectric elements, the second adhesive has curing time shorter than a curing time of the first adhesive and the second adhesive is applied on a second adhesive surface on the one face of the fixation member does not overlap with the piezoelectric elements in the arrangement direction of the piezoelectric elements.