Patent ID: 7284841

Claim:
A head for ink-jet recording comprising: a plurality of nozzle arrays each of which is arranged along a first direction and has a plurality of nozzles; a plurality of pressure chambers corresponding to the nozzles respectively; an actuator having a plurality of energy generating devices each of which selectively provides a discharge energy to an ink contained in each of the pressure chambers; and a wiring substrate having wirings each of which feeds electricity to each of the energy generating devices; wherein a plurality of arrays of individual surface electrodes and a common surface electrode are provided in a form of plane on the actuator, the plurality of arrays of individual surface electrodes being provided to correspond to the nozzle arrays respectively, each of the arrays having the individual surface electrodes connected to the energy generating devices respectively and arranged in a staggered manner along the first direction, and the common surface electrode being commonly connected to the plurality of energy generating devices; wherein a plurality of arrays of individual joining electrodes and a common joining electrode are formed in the wiring substrate, the plurality of arrays of individual joining electrodes being provided to correspond to the plurality of individual surface electrodes of the actuator respectively, each of the arrays of individual joining electrodes having a plurality of individual joining electrodes arranged in a staggered manner along the first direction, each of the plurality of individual joining electrodes being joined to an associated individual surface electrode of the individual surface electrodes, the common joining electrode being joined to the common surface electrode at a position opposed to the common surface electrode; wherein the common joining electrode of the wiring substrate is formed in a band-like manner and extends in a direction substantially perpendicular to a direction of the arrays of individual surface electrodes; wherein the wirings connected to the individual joining electrodes respectively extend substantially parallel to a side edge of the common joining electrode; and wherein a wiring of the wirings of the wiring substrate is connected to an individual joining electrode which belongs to the individual joining electrodes of the wiring substrate, and is positioned in a nearest array to the side edge of the common joining electrode among the arrays of individual surface electrodes, and the wiring is formed so that: the wiring passes between the side edge and another individual joining electrode which is located in another array from the nearest array and is located at a position farther from the side edge than the individual joining electrode; and a gap between the wiring and the side edge is substantially equal to or greater than a gap between the individual joining electrode and the side edge.