Patent ID: 7537321
Filing Date: 2009-05-26
Classification: B41J

Abstract:
1. A droplet discharge head, comprising: a plurality of nozzles which discharge droplets of liquid; a plurality of pressure chambers which are connected to the nozzles and filled with the liquid to be discharged through the nozzles; and a laminated piezoelectric body which has a plurality of active portions to impart pressure variation to the liquid inside the pressure chambers so as to cause the droplets to be discharged from the nozzles, respectively, wherein first linear grooves and second linear grooves which intersect each other at a substantially orthogonal angle are formed in the laminated piezoelectric body, and the active portions of the laminated piezoelectric body are defined by the first and second linear grooves, wherein the plurality of pressure chambers have a substantially same shape as the active portions, and wherein the plurality of nozzles corresponding to the plurality of pressure chambers are arranged in such a manner that, with respect to each of pressure chamber rows parallel to the first linear grooves, the nozzles corresponding to each of the pressure chamber rows parallel to the first linear grooves are shifted in a direction of each of the pressure chamber rows.