Patent ID: 6568796
Filing Date: 2003-05-27
Classification: B41J

Abstract:
A head chip comprising:a first-substrate having a first main surface and a second main surface opposite the first main surface; a second substrate having a first main surface and a second main surface opposite the first main surface and disposed on the second main surface of the first substrate; a plurality of first partition walls disposed on the first main surface of the first substrate and spaced apart at a preselected interval to form a plurality of first channels each for receiving ink and having a pair of side walls; a plurality of second partition walls disposed on the first main surface of the second substrate and spaced apart at a preselected interval to form a plurality of second channels each for receiving ink and having a pair of side walls; and a plurality of electrodes connected to the side walls of the first and second channels and driven by a voltage signal to deform the side walls to vary the volume in the first and second channels to thereby eject ink from the first and second channels.