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    • 4. 发明公开
    • Liquid discharge device
    • Flüssigkeitsausstossvorrichtung,Aufzeichnungsgerät和und Tintenstrahlaufzeichnungskopf
    • EP1582353A2
    • 2005-10-05
    • EP05006993.9
    • 2005-03-31
    • KYOCERA CORPORATIONBrother Kogyo Kabushiki Kaisha
    • Matsumoto, AyumuHibi, ManabuSakaida, AtsuoHirota, Atsushi
    • B41J2/14
    • B41J2/14233B41J2002/14266B41J2002/14459B41J2002/14491B41J2202/11
    • The liquid discharge device of the present invention comprises a piezoelectric actuator 11 and a flow passage member 21. The piezoelectric actuator 11 has a plurality of driving electrodes 15 formed on a piezoelectric ceramic layer 14, and a plurality of piezoelectric displacement elements 16 disposed longitudinally and laterally with regularity. In the flow passage member 21, a plurality of liquid compressing chambers 23 are formed with liquid outlet orifices 22. The piezoelectric actuator 11 is placed on the flow passage member 21, so that the driving electrodes 15 correspond in position to the liquid compressing chambers 23. A plurality of piezoelectric displacement elements 16 are disposed longitudinally in N lines (N≧4) and have dot density of not less than 300 dpi in lateral direction. The ratio (B/A) of arrangement interval B between the driving electrodes 15 in longitudinal direction to arrangement interval A between the driving electrodes 15 in lateral direction is 0.95 to 1.5. The minimum distance D between the neighboring driving electrodes 15 is 0.15A or more, D≧0.15A. This can suppress cross talk.
    • 本发明的液体排出装置包括压电致动器11和流路构件21.压电致动器11具有形成在压电陶瓷层14上的多个驱动电极15和沿纵向设置的多个压电位移元件16, 横向有规律。 在流路构件21中,多个液体压缩室23形成有液体出口孔22.压电致动器11被放置在流动通道构件21上,使得驱动电极15在液体压缩室23的位置对应 多个压电位移元件16纵向地设置在N行(N‰§4)中,并且在横向具有不小于300dpi的点密度。 驱动电极15的长度方向与驱动电极15的横向的配置间隔A的配置间隔B的比(B / A)为0.95〜1.5。 相邻驱动电极15之间的最小距离D为0.15A以上,D≤0.15A。 这可以抑制串扰。