Patent ID: 8882230

Claim:
A liquid droplet ejecting head which is configured by overlaying and fixing a nozzle plate which is provided with a nozzle hole; and an ejecting liquid chamber forming member which makes up a wall face forming an ejecting liquid chamber, the liquid droplet ejecting head comprising: the nozzle hole which ejects liquid droplets; an ejecting liquid chamber which is in communication with outside via the nozzle hole and which contains an ejecting liquid to be the liquid droplets; a pressure generating unit which generates pressure within the ejecting liquid chamber, the pressure generating unit including: a vibrating plate which forms a part of a wall face of the ejecting liquid chamber and which changes a volume of the ejecting liquid chamber by deforming; and a piezoelectric element including a piezoelectric material and first and second electrodes having the piezoelectric material therebetween, wherein applying a voltage between the first and second electrodes causes the deforming to occur in the piezoelectric material and the deforming is transmitted to deform the vibrating plate; a temperature detecting unit which detects temperature at a location at which is arranged a temperature measuring resistive body, the temperature measuring resistive body being formed in a same layer as a layer in which is formed the first electrode, the first electrode being located on an ejecting liquid chamber side; and a pressure control unit which controls an output of the pressure generating unit based on detected results of the temperature detecting unit, wherein the pressure generating unit is configured to increase the pressure within the ejecting liquid chamber, so that the ejecting liquid within the ejecting liquid chamber is ejected from the nozzle hole as the liquid droplets, and wherein the temperature measuring resistive body is arranged at the ejecting liquid chamber forming member, an ejecting liquid supplying unit forming member which is fixed by being overlaid onto a face on the side opposite a face onto which the nozzle plate at the ejecting liquid chamber forming member is fixed and which is formed with a supplying liquid container which contains the ejecting liquid which is supplied to the ejecting liquid chamber, wherein a concave portion is formed in the ejecting liquid supplying unit forming member such that the ejecting liquid chamber side of the ejecting liquid supplying unit forming member opens, wherein the piezoelectric element is accommodated between the concave portion and the vibrating plate, wherein a convex face of the concave portion that protrudes to the ejecting liquid chamber relative to a bottom face of the concave portion is fixed by being overlaid onto a face on the side opposite a face onto which the nozzle plate at the ejecting liquid chamber forming member is fixed, and wherein the temperature measuring resistive body is arranged at a joint portion between the ejecting liquid chamber forming member and the convex face of the concave portion.