PIEZOELECTRIC ACTUATOR, LIQUID EJECTION HEAD, AND METHOD FOR MANUFACTURING PIEZOELECTRIC ACTUATOR

摘要

PROBLEM TO BE SOLVED: To achieve a long size while suppressing variation in the arrangement of piezoelectric element parts 2b in a piezoelectric actuator including a plurality of piezoelectric element parts 2b arranged at the predetermined pitch in a predetermined direction. SOLUTION: The piezoelectric actuator 2 includes n piezoelectric actuator plates 18 constituted by sintering laminates including alternately laminated piezoelectric sheets 3 and fixed parts 4 and disposing the piezoelectric element parts 2b at the predetermined pitch in a laminating direction; space adjusting members 17 interposed between the n piezoelectric actuator plates 18 arranged in the laminating direction; and dimension regulating parts 50 arranging the piezoelectric element parts 2b at the predetermined pitch straddling the plurality of piezoelectric actuator plates 18 by regulating a length from the first piezoelectric actuator plate 18 to the n-th piezoelectric actuator plate 18 to a predetermined length. COPYRIGHT: (C)2011,JPO&INPIT