| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid jet head enabling the ejection of a droplet at a higher frequency. SOLUTION: A piezoelectric vibrator (18) is constituted of a multilayer structure piezoelectric vibrator (18) formed of a multilayer structure including an upper layer piezoelectric element (24) and a lower layer piezoelectric element (25) laminated with one another, a drive electrode (23) formed in a boundary of these upper layer piezoelectric element (24) and lower layer piezoelectric element (25) and conducted to a drive signal supply source, a common upper electrode (26) formed on the surface of the upper layer piezoelectric element (24), and a common lower electrode (27) formed on the surface of the lower layer piezoelectric element (25). An inertance of a nozzle opening (10) and an ink supply port (5) is set larger than an inertance of pressure generators (6, 13, 16). COPYRIGHT: (C)2010,JPO&INPIT
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