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    • 2. 发明授权
    • Liquid ejecting head drive method and liquid ejection device
    • 液体喷射头驱动方法和液体喷射装置
    • US07252354B2
    • 2007-08-07
    • US10488747
    • 2002-09-11
    • Maki ItoMasami MuraiShiro Yazaki
    • Maki ItoMasami MuraiShiro Yazaki
    • B41J29/38B41J2/045
    • B41J2/04581B41J2/04588B41J2/04593
    • A liquid-ejecting apparatus according to which targeted good characteristics can be obtained, and moreover the scope for material selection can be broadened is provided. The liquid-ejecting apparatus contracts a pressure chamber and thus ejects liquid through application of voltage to a piezoelectric body, and is such that the driving waveform applied to the piezoelectric body during the liquid ejecting operation comprises a high potential period (a2) in which a voltage exhibiting an electric field strength exceeding the coercive electric field of the piezoelectric body is applied, and a reverse potential period (a6) in which a voltage such that the potential becomes of the opposite polarity to the polarity in the high potential period or the potential becomes zero is applied.
    • 可以获得目标良好特性的液体喷射装置,并且还可以扩大材料选择的范围。 液体喷射装置使压力室收缩,从而通过向压电体施加电压喷射液体,并且使得在液体喷射操作期间施加到压电体的驱动波形包括高电位周期(a 2),其中 施加表现出超过压电体的矫顽电场的电场强度的电压,和施加使电位成为与高电位期间极性相反极性的电压的反向电势周期(a 6),或 电位变为零。
    • 4. 发明申请
    • Ink jet recording head and ink jet recorder
    • 喷墨记录头和喷墨记录器
    • US20060203041A1
    • 2006-09-14
    • US11430893
    • 2006-05-10
    • Masato ShimadaShinri SakaiShiro Yazaki
    • Masato ShimadaShinri SakaiShiro Yazaki
    • B41J2/045
    • B41J2/1646B41J2/14233B41J2/161B41J2002/14387B41J2002/14491
    • To provide an ink jet recording head with a decreased initial deflection amount of a diaphragm and an ink jet recorder comprising the ink jet recording head. An ink jet recording head which has a flow passage formation substrate 10 where pressure generation chambers 12 communicating with nozzle openings are defined and a piezoelectric element being placed on one side of the flow passage formation substrate 10 via a diaphragm and having at least a lower electrode 60, a piezoelectric layer 70, and an upper electrode 80, characterized in that at least one of layers deposited together with the piezoelectric layer 70 is a compression film 50 having a compressive stress and the compression film 50 has at least a part in a thickness direction removed in at least a part of an area opposed to the pressure generation chamber, whereby the stress of the whole film is decreased.
    • 提供具有减小的隔膜的初始偏转量的喷墨记录头和包括喷墨记录头的喷墨记录器。 一种喷墨记录头,其具有流路形成基板10,其中形成有与喷嘴开口连通的压力产生室12,并且压电元件通过隔膜放置在流路形成基板10的一侧上,并具有至少一个下电极 60,压电层70和上电极80,其特征在于,与压电层70一起沉积的层中的至少一层是具有压缩应力的压缩膜50,压缩膜50具有至少一部分厚度 方向在与压力产生室相对的区域的至少一部分中移除,由此整个膜的应力减小。
    • 5. 发明授权
    • Ink jet printing head including a backing member for reducing displacement of partitions between pressure generating chambers
    • 喷墨打印头包括用于减小压力发生室之间的隔板位移的背衬构件
    • US06231169B1
    • 2001-05-15
    • US09069992
    • 1998-04-30
    • Shiro YazakiShinri Sakai
    • Shiro YazakiShinri Sakai
    • B41J2045
    • B41J2/14233B41J2002/14387
    • An ink jet recording head includes at least a row of nozzle aperture; a passage formed substrate having partitions forming at least a row of pressure generating chambers, each communicating the respective nozzle aperture; a diaphragm forming a part of the pressure generating chambers and at least an upper surface of which serves as a lower electrode; a piezoelectric vibrator including, a piezoelectric active part having a piezoelectric layer formed on the surface of the diaphragm, and an upper electrode formed on the surface of said piezoelectric layer and formed in an area opposite to said pressure generating chamber; and a backing member joined to the side of the piezoelectric layer and having partitioning walls forming a concave portion being space to extent that a movement of the piezoelectric active part is not prevented, and fixed to the passage formed substrate such that each partitioning wall is opposite to the partition of the passage formed substrate.
    • 喷墨记录头包括至少一排喷嘴孔; 通道形成的基板具有形成至少一排压力产生室的隔板,每个压力产生室连通相应的喷嘴孔; 形成压力发生室的一部分并且其至少上表面用作下电极的隔膜; 一种压电振动器,包括:具有形成在所述隔膜表面上的压电层的压电有源部分和形成在所述压电层的表面上并形成在与所述压力发生室相对的区域中的上电极; 以及与所述压电体层侧接合并具有形成凹部的分隔壁的背衬构件,所述隔壁形成为空间,所述隔壁的尺寸使得所述压电有源部的移动不被阻止,并且固定到所述通道形成的基板,使得每个分隔壁相对 到通道形成的基底的分隔。
    • 9. 发明授权
    • Liquid jet head and a liquid jet apparatus
    • 液体喷射头和液体喷射装置
    • US08029109B2
    • 2011-10-04
    • US12359042
    • 2009-01-23
    • Shiro Yazaki
    • Shiro Yazaki
    • B41J2/045
    • B41J2/14209B41J2/055B41J2/14233B41J2002/14241B41J2002/14419
    • A lower electrode 60 in a region opposite each of pressure generation chambers 12 is formed to have a width smaller than the width of the corresponding pressure generation chamber 12, and an upper surface and an end surface of the lower electrode 60 in a region corresponding to each of the pressure generation chambers 12 is covered with a piezoelectric material layer 70. An end surface of the piezoelectric material layer 70 forms a slope surface sloping downward toward the outside, an upper surface and an end surface of the piezoelectric material layer 70 in the region opposite each of the pressure generation chambers 12 are covered with an upper electrode 80, and a distance D1 between the upper surface of the lower electrode 60 and the upper surface of the piezoelectric material layer 70 and a distance D2 between the end surface of the lower electrode 60 and the end surface of the piezoelectric material layer 70 satisfy the relationship D2≧D1.
    • 在与压力产生室12相对的区域中的下电极60形成为具有比对应的压力产生室12的宽度小的宽度,以及下电极60的上表面和端面对应于 每个压力产生室12被压电材料层70覆盖。压电材料层70的端面形成向外倾斜的倾斜面,压电材料层70的上表面和端面 与每个压力产生室12相对的区域被上电极80覆盖,下电极60的上表面和压电材料层70的上表面之间的距离D1和 下电极60和压电体层70的端面满足D2≥D1的关系。
    • 10. 发明申请
    • LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND ACTUATOR DEVICE
    • 液体喷射头,液体喷射装置和执行器装置
    • US20100245491A1
    • 2010-09-30
    • US12723803
    • 2010-03-15
    • Shiro YAZAKIEiju HIRAI
    • Shiro YAZAKIEiju HIRAI
    • B41J2/045H01L41/047H01L41/09
    • B41J2/14233B41J2/055B41J2002/14241B41J2002/14419
    • A liquid ejecting head includes a flow passage substrate having a pressure generation chamber in communication with a nozzle opening. A piezoelectric element includes first and second electrode and a piezoelectric substance layer and is positioned over one surface of the flow passage substrate. The piezoelectric element is deformed to form a convex toward the pressure generation chamber when the piezoelectric element is driven. A protection film formed from an inorganic material covers the piezoelectric element and has an opening through which an upper surface of the second electrode is exposed. An end of the opening in the protection film viewed in a direction of the length of the pressure generation chamber is located closer to the center than is an area at which the center of curvature of a curve of the piezoelectric element that forms near a wall around the pressure generation chamber during deformation operation.
    • 液体喷射头包括具有与喷嘴开口连通的压力产生室的流路基板。 压电元件包括​​第一和第二电极和压电体层,并且位于流路基板的一个表面上。 当压电元件被驱动时,压电元件变形以朝向压力产生室凸出。 由无机材料形成的保护膜覆盖压电元件,并且具有露出第二电极的上表面的开口。 在压力发生室的长度方向上观察的保护膜中的开口的端部比靠近壁周围的压电元件的曲线的曲率中心更靠近中心 在变形操作期间的压力发生室。