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    • 31. 发明授权
    • Liquid-droplet jetting apparatus and liquid transporting apparatus
    • 液滴喷射装置和液体输送装置
    • US07784920B2
    • 2010-08-31
    • US11441169
    • 2006-05-26
    • Hiroto SugaharaHiroyuki Ishikawa
    • Hiroto SugaharaHiroyuki Ishikawa
    • B41J2/045
    • B41J2/14233B41J2002/14266B41J2002/14419B41J2202/11
    • An ink-jet head includes a channel unit in which two sets of a manifold and five pressure chambers adjacent to the manifold are formed, a vibration plate which is provided on an upper surface of the channel unit, a piezoelectric layer which is provided on an upper surface of the vibration plate, and a piezoelectric actuator which includes individual electrodes provided on an upper surface of the piezoelectric layer, corresponding to the pressure chambers. The vibration plate is arranged such that the vibration plate covers 10 pressure chambers and two manifolds, and on a lower surface of the vibration plate, in an area overlapping with the two manifolds, a recess having a cross-sectional shape of a taper is formed. Due to the recess, a pressure wave which is propagated to the manifold can be attenuated assuredly.
    • 喷墨头包括通道单元,其中形成了两组歧管和与歧管相邻的五个压力室,设置在通道单元的上表面上的振动板,设置在通道单元上的压电层 振动板的上表面和压电致动器,其包括对应于压力室的设置在压电层的上表面上的单独电极。 振动板被布置成使得振动板在与两个歧管重叠的区域中覆盖10个压力室和两个歧管,并且在振动板的下表面上,形成具有锥形横截面形状的凹部 。 由于凹陷,传播到歧管的压力波可以被确定地衰减。
    • 33. 发明授权
    • Liquid transport apparatus
    • 液体输送装置
    • US07780268B2
    • 2010-08-24
    • US11862939
    • 2007-09-27
    • Hiroto Sugahara
    • Hiroto Sugahara
    • B41J2/04
    • B41J2/005B41J2002/14395
    • A liquid transport apparatus includes liquid transport channels disposed on an insulating surface of a substrate, individual electrodes disposed in regions corresponding to respective ones of the liquid transport channels, and wiring portions extending along the insulating surface of the substrate. The apparatus further includes a first insulating layer disposed so as to cover the electrodes and in which the wetting angle with respect to a conductive liquid changes according to an electrical potential difference between the conductive liquid and the electrodes, a second insulating layer which is disposed so as to cover the wiring portions disposed in contact with the first insulating layer, and a potential applying unit which applies an electric potential to the electrodes.
    • 液体输送装置包括设置在基板的绝缘表面上的液体输送通道,设置在与各个液体输送通道对应的区域中的各个电极以及沿着基板的绝缘表面延伸的布线部分。 该装置还包括:第一绝缘层,其设置成覆盖电极,并且其中相对于导电液体的润湿角度根据导电液体和电极之间的电位差而改变;第二绝缘层,其被布置为 以覆盖与第一绝缘层接触设置的布线部分,以及向电极施加电位的电位施加单元。
    • 38. 发明申请
    • RADIO WAVE PROPAGATION CHARACTERISTIC ESTIMATING SYSTEM, ITS METHOD , AND PROGRAM
    • 无线电波传播特征估计系统,其方法和程序
    • US20100081390A1
    • 2010-04-01
    • US12527521
    • 2008-02-15
    • Masahiro MotoyoshiHiroto Sugahara
    • Masahiro MotoyoshiHiroto Sugahara
    • H04B17/00
    • H04W16/18H04B17/3912
    • The amount of operation processing is reduced without largely degrading an estimation precision of radio wave propagation estimation.The radio wave propagation characteristic estimating system for estimating a radio wave propagation characteristic by taking into decision-theoretical consideration such a structure as a building or indoor furnishings includes the object selecting unit for selecting, from objects within a region to be analyzed, an object whose effect on an estimation precision is small by using position data of a transmission point, the number of constituent faces reducing unit for reducing the number of constituent faces of the selected object, and the radio wave propagation estimating unit for estimating radio wave propagation by using an object within the region to be analyzed which is not selected by the object selecting unit and an object whose number of constituent faces is reduced by the number of constituent faces reducing unit.
    • 减少操作处理量,而不会大大降低无线电波传播估计的估计精度。 通过考虑诸如建筑物或室内装置的结构的决策理论考虑来估计无线电波传播特性的无线电波传播特性估计系统包括:对象选择单元,用于从待分析区域内的对象中选择一个对象, 通过使用发送点的位置数据,减少所选择的对象的构成面的数量的构成面减少单元的数量和通过使用用于估计无线电波传播的无线电波传播估计单元的估计精度的影响小 要被分析的区域内的物体,其不被对象选择单元选择,并且构成面数的对象减少了构成面减少单元的数量。
    • 40. 发明授权
    • Liquid transporting apparatus
    • 液体输送装置
    • US07658474B2
    • 2010-02-09
    • US11261067
    • 2005-10-27
    • Hiroto Sugahara
    • Hiroto Sugahara
    • B41J2/045
    • B41J2/14233B41J2002/14266B41J2202/11
    • A piezoelectric actuator includes a vibration plate 30 covering pressure chambers 14 and serving also as a common electrode, a piezoelectric layer 31 arranged on the vibration plate 30 on a side opposite to the pressure chambers 14, and individual electrodes 32. The individual electrodes are each arranged on a surface of the piezoelectric layer 31 opposite to the vibration plate 30, in an area overlapping with an edge portion of the pressure chamber as viewed from a direction orthogonal to a plane in which the pressure chambers are arranged, the edge portion being an area other than the central portion of the pressure chamber. The individual electrodes are extended up to an area outside of the pressure chambers, as viewed from the direction orthogonal to the plane. A liquid transporting apparatus including the piezoelectric actuator has an excellent durability and improved drive efficiency.
    • 压电致动器包括覆盖压力室14并且也用作公共电极的振动板30,在与压力室14相对的一侧上布置在振动板30上的压电层31和各个电极32.各个电极各自 布置在与振动板30相对的压电层31的表面上,在从与压力室布置的平面垂直的方向观察时,与压力室的边缘部分重叠的区域中,边缘部分为 除了压力室的中心部分之外的区域。 从与平面正交的方向观察,各个电极延伸到压力室外部的区域。 包括压电致动器的液体输送装置具有优异的耐久性和提高的驱动效率。