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    • 28. 发明申请
    • Liquid-jet head and liquid-jet apparatus
    • 喷液头和液体喷射装置
    • US20050012784A1
    • 2005-01-20
    • US10632113
    • 2003-08-01
    • Maki Ito
    • Maki Ito
    • B41J2/045B05B17/06B41J2/055B41J2/14B41J2/16G02F1/13H01L51/50H05B33/10
    • B41J2/14233B41J2002/14241B41J2002/14419B41J2202/11
    • Provided are a liquid jet head and a liquid jet apparatus which are capable of reducing fluctuation of a displacement amount of a vibration plate by driving of piezoelectric elements. A liquid jet head comprising: a passage-forming substrate on which pressure generating chambers communicating with nozzle orifices are defined, and a piezoelectric element composed of a lower electrode, a piezoelectric layer and an upper electrode, which are provided on the passage-forming substrate while interposing a via a vibration plate therebetween, wherein, both ends of the piezoelectric layer in its width direction at a pressure generating chamber side are positioned in an opening region of the pressure generating chamber, and a relationship between a width x of the piezoelectric layer at the pressure generating chamber side and a width y of the pressure generating chamber at a vibration plate side satisfies 0.75≦x/y≦1. Thus, the fluctuation of the displacement amount of the vibration plate by the driving of the piezoelectric element can be reduced.
    • 提供一种能够通过驱动压电元件来减小振动板的位移量的波动的液体喷射头和液体喷射装置。 一种液体喷射头,包括:通道形成基板,在其上限定与喷嘴孔连通的压力产生室,以及设置在通道形成基板上的由下电极,压电层和上电极组成的压电元件 同时在其间插入振动板,其中,压电层在压力发生室侧的宽度方向的两端位于压力发生室的开口区域,压电层的宽度x之间的关系 在压力发生室侧,压力发生室的振动板侧的宽度y满足0.75 <= x / y <= 1。 因此,通过压电元件的驱动可以减小振动板的位移量的波动。