Patent ID: 7524022
Filing Date: 2009-04-28
Classification: B41J

Abstract:
1. A head module comprising: a plurality of head-chip lines, each head-chip line having a plurality of head chips arranged in a certain direction, each head chip having energy-generating elements for discharging liquid and electrodes for electrically connecting the energy-generating elements to a control substrate; and a wiring board having wires for electrically connecting the electrodes on the head chips to the control substrate, wherein the head module drives the energy-generating elements in the head chips through the wiring board to discharge liquid, wherein the wiring board includes wherein the wires in the connecting sections and the terminal section are arranged in a single-layer structure along a horizontal direction, and wherein the wires in the common wire sections are arranged in a multi-layer structure in which portions of the wires are stacked in the vertical direction.