Patent ID: 8807709
Filing Date: 2014-08-19
Classification: B41J

Abstract:
1. An ink-jet head comprising: a substrate; a piezoelectric member mounted on the substrate and comprising a plurality of pressure chambers; a plurality of electrodes disposed in the pressure chambers, individually; a plurality of electrically conductive portions disposed on the substrate and connected to the electrodes, individually; a frame member inside which an ink chamber in which the piezoelectric member is disposed is defined and which is attached to the substrate from above the electrically conductive portions; an insulating film which covers the piezoelectric member, the electrodes, the frame member, and a part of the electrically conductive portions; an electronic component connected to the electrically conductive portions; a protective agent which entirely covers an end portion of the insulating film located between the frame member and the electronic component and the electrically conductive portions between the electronic component and the end portion of the insulating film; the end portion of the insulating film is sealed by the protective agent; the protective agent is an ink resistant adhesive; and a mask which is attached to the substrate by the protective agent, thereby covering the electronic component.