Patent ID: 7135121
Filing Date: 2006-11-14
Classification: B41J,Y10T

Abstract:
1. A manufacturing method for an ink-jet recording head, which comprises: a passage-forming substrate having a pressure generating chamber formed thereon, which communicates with a nozzle orifice; and a piezoelectric element formed of a thin film and by a lithography method in a region corresponding to said pressure generating chamber via a vibration plate constituting a portion of said pressure generating chamber, in which a passage-forming layer is provided between said passage-forming substrate and said vibration plate, and the passage-forming layer has a space portion formed in a region opposite to said pressure generating chamber, the manufacturing method of an ink-jet recording head comprising: forming said passage-forming layer on said passage-forming substrate and imparting etching selectivity to a region that will be said space portion of the passage-forming layer, forming said vibration plate on said passage-forming layer and forming a piezoelectric element on the vibration plate, performing anisotropic etching for said passage-forming substrate from a surface opposite that having said passage-forming layer to form a penetrated portion at least to a region that will be said space portion of said passage-forming layer, etching said passage-forming layer to form said space portion, and forming the pressure generating chamber opposite the space portion, joining a nozzle plate, having nozzle orifices, to the passage-forming substrate, and thereby forming the ink-jet recording head.