Patent ID: 8550602
Filing Date: 2013-10-08
Classification: B41J

Abstract:
1. A liquid ejecting head, comprising: a pressure generation chamber communicating with a nozzle opening; a vibrating wall provided as one surface of the pressure generation chamber and vibrates so that ejects the liquid from the nozzle opening; and a resin portion having a recessed arc-shape and formed in a corner of the pressure generation chamber and formed of a resin material having a Young's modulus of less than or equal to 10 GPa, a protective film provided on an inner wall surface of the pressure generation channel, the protective film being formed of tantalum oxide, wherein: the resin portion is disposed over the protective film; and a ratio r/w of a radius r of the surface of the resin portion to a width w of the pressure generation chamber defined by the vibrating wall is greater than or equal to 0.017 and less than or equal to 0.087.