Patent ID: 7562428
Filing Date: 2009-07-21
Classification: B41J,H05K,Y10T

Abstract:
1. A manufacturing method of an inkjet head comprising an ink passage unit including a plurality of pressure chambers and a plurality of wall portions defining each of the plurality of pressure chambers; and a printed circuit board on which a terminal and a predetermined wiring pattern are provided, the method comprising steps of: forming an actuator unit including a piezoelectric element disposed on the ink passage unit, a surface electrode disposed on the piezoelectric element and having a main electrode portion opposed to a pressure chamber of the plurality of pressure chambers and a connecting portion opposed to a wall portion of the plurality of wall portions defining each of the plurality of pressure chambers of the ink passage unit, and a land disposed on the piezoelectric element in a region opposed to the wall portion, the land being electrically connected to the surface electrode, wherein the terminal is electrically connected to the land; disposing a metallic bond and an insulating thermosetting resin between the terminal and the land; pressing the land and the terminal so that they are brought near each other, for discharging at least part of the thermosetting resin from a gap between the land and the terminal, and bring at least one of the terminal and the metallic bond into contact with the land; and heating the metallic bond and the thermosetting resin so that the land and the terminal are electrically connected to each other with the metallic bond being disposed in at least one of a region between the land and the terminal and a region extending over the land and the terminal along peripheries of the land and the terminal, and a protrusion made of the thermosetting resin is formed at least in the connecting portion between the main electrode portion and the land, wherein: