Patent ID: 7699443

Claim:
A liquid ejecting apparatus including a liquid ejecting head having a nozzle forming face in which a plurality of nozzle openings for ejecting liquid drops are formed in line at a predetermined pitch, wherein: said liquid ejecting head has a plurality of pressure chambers respectively interconnected to said plurality of nozzle openings, a plurality of elastic walls forming one face of each of said plurality of pressure chambers, and a piezoelectric actuator unit configured to deform said elastic walls to change volume of said pressure chambers, said plurality of nozzle openings and said plurality of pressure chambers are arranged in a first row and a second row which are parallel with each other, and said nozzle openings and said pressure chambers belonging to said first row and said nozzle openings and said pressure chambers belonging to said second row are staggered from each other at a pitch which is a half of said predetermined pitch, and said piezoelectric actuator unit has a plurality of piezoelectric vibrators arranged in one row at a pitch which is a half of said predetermined pitch in correspondence with said plurality of pressure chambers, said plurality of piezoelectric vibrators respectively include active parts capable of performing piezoelectric deformation corresponding to said pressure chambers belonging to said first row or said second row and inactive parts incapable of performing piezoelectric deformation corresponding to partitions for isolating said pressure chambers belonging to said second row or said first row, an arrangement of said active part and said inactive part is opposite between adjacent piezoelectric vibrators, and said piezoelectric vibrators respectively have an individual electrode layer on a drive voltage input side, and all of said individual electrode layers of said plurality of piezoelectric vibrators are exposed on one side of said piezoelectric actuator unit in said vibrator width direction.