Patent ID: 7628470
Filing Date: 2009-12-08
Classification: B41J

Abstract:
1. A liquid ejection head which ejects droplets of liquid from ejection ports by pressurizing the liquid filled in pressure chambers connected to the ejection ports, the liquid ejection head comprising: a first substrate; first conducting members which are formed in a column shape erecting on a surface of the first substrate in a direction substantially perpendicular to the surface of the first substrate; second conducting members which have lower hardness than the first conducting members and are formed on ends of the first conducting members different than ends connecting with the surface of the first substrate, pairs of the first conducting members and the second conducting members composing column-shaped electrical wires; a second substrate which is bonded to ends of the second conducting members different than ends connecting with the first conducting members; and pressure generating elements which are formed on one of the first substrate and the second substrate, the pressure generating elements being connected to the electrical wires and generating pressure change in the liquid inside the pressure chambers by being driven by drive signals applied through the electrical wires.