Patent Number: 7,422,315

Title: Liquid ejection head and image forming apparatus comprising same

Abstract: The liquid ejection head includes 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, 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 and a plurality of electric wires which respectively transfer a drive signal to the piezoelectric elements. The piezoelectric elements are provided on a side of the pressure chambers opposite to a side on which the ejection ports are formed and the common liquid chamber is formed in an opposite side to the pressure chambers with respect to the piezoelectric elements The drive signal drive the piezoelectric elements for deforming the pressure chambers, 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 are formed so as to rise upward in a substantially perpendicular direction to a surface on which the piezoelectric elements are disposed.

Inventors: Hori; Hisamitsu (Kanagawa, JP)

Assignee: Fujifilm Corporation

International Classification: B41J 2/045 (20060101)

Expiration Date: 2020-09-09 0:00:00