Patent ID: 7591544
Filing Date: 2009-09-22
Classification: B41J

Abstract:
1. A liquid ejecting head comprising: a channel-forming substrate that communicates with nozzle orifices for ejecting a liquid and that includes a plurality of pressure-generating chambers separated by a plurality of partition walls and arranged in parallel in a direction in which a short side thereof extends; and pressure-generating elements that are provided on a surface of the channel-forming substrate, with a diaphragm therebetween, and that provide the pressure-generating chambers with a pressure change, wherein recesses that open to the side of the pressure-generating chambers are provided on areas of the diaphragm, the areas facing the pressure-generating chambers, opening edges of each of the recesses are disposed at the same positions as corners each defined by an inner surface of the corresponding partition wall, the inner surface defining a side surface of the pressure-generating chamber, and a surface of the partition wall that is joined to the diaphragm, and side surfaces of each of the recesses form inclined surfaces that are inclined so that the width of the recess at the bottom surface of the recess is smaller than the width of the recess at the opening edges of the recess.