Patent ID: 7422315
Filing Date: 2008-09-09
Classification: B41J

Abstract:
1. A liquid ejection head, comprising: a plate having a plurality of ejection ports which eject a liquid; a plurality of pressure chambers which respectively connect to the ejection ports; a plurality of piezoelectric elements which respectively deform the pressure chambers, the piezoelectric elements being provided on a side of the pressure chambers opposite to a side on which the ejection ports are formed; a plurality of thin plates formed with a plurality of flow channels for the liquid; a common liquid chamber which respectively supplies the liquid to the pressure chambers, the common liquid chamber being formed on a side of the piezoelectric elements opposite to a side of the piezoelectric elements that the pressure chambers are formed; and a plurality of electric wires which respectively transfer a drive signal to the piezoelectric elements, the drive signal driving the piezoelectric elements for deforming the pressure chambers, wherein: the common liquid chamber is a space which is formed by laminating the thin plates together; and the electric wires are formed in opening portions formed in parts of portions on which the laminated thin plates overlap to each other, the electric wires being formed so as to rise upward in a substantially perpendicular direction to a surface on which the piezoelectric elements are disposed.