| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid ejection device which can suppress cross talk. SOLUTION: A plurality of piezoelectric displacement elements 16 in which a plurality of driving electrodes 15 are formed on a piezoelectric ceramic layer 14 are orderly disposed vertically and laterally in a piezoelectric actuator 11. The piezoelectric actuator 11 is attached onto a channel member 21 in which a plurality of liquid compression chambers 23 having liquid ejection outlets 22 are formed, such that the positions of the liquid compression chambers 23 and the driving electrodes 15 are aligned. The plurality of piezoelectric displacement elements 16 are vertically disposed in N rows (N≥4). The dot density in the lateral direction is 300 dpi or more. The ratio between the disposing interval A of the driving electrodes 15 in the lateral direction and the disposing interval B of the driving electrodes 15 in the vertical direction (B/A) is 0.95 to 1.5. Moreover, when the shortest distance between the adjacent driving electrodes 15 is D, the liquid ejection device satisfies the relation: D≥0.15A. COPYRIGHT: (C)2006,JPO&NCIPI
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