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    • 21. 发明授权
    • Ferroelectric relaxor polymer method
    • 铁电弛豫聚合物法
    • US06605246B2
    • 2003-08-12
    • US10099080
    • 2002-03-14
    • Qiming ZhangVivek Bharti
    • Qiming ZhangVivek Bharti
    • B29B1114
    • H01L41/45H01G4/18Y10S428/91Y10T428/3154Y10T428/31544Y10T428/31699
    • The invention is embodied in an electrical device which includes at least a layer of a ferroelectric polyvinylidine flouride polymer that has been processed to exhibit an electrostrictive strain of 4% or more when an electric field gradient of 50 megavolts per meter or greater is applied thereacross. The processing of the polymer preferably involves subjecting it to either electron beam radiation or gamma radiation. The polyvinylidine flouride polymer is selected from the group of: polyvinylidine fluoride, polyvinylidine fluoride-trifluoroethylene P(VDF-TrFE), polyvinylidine fluoride tetrafluoroethylene P(VDF-TFE), polyvinylidine fluoride trifluoroethylene-hexafluoropropylene P(VDF-TFE-HFE) and polyvinylidine fluoride-hexafluoropropylene P(VDF-HFE).
    • 本发明体现在一种电气装置中,当电场梯度为50兆伏特/米或更大的电场梯度在其上时,该电气装置至少包括一层铁电聚偏二氟乙烯聚合物,该层已被加工成具有4%以上的电致伸缩应变。 聚合物的加工优选包括对其进行电子束辐射或γ辐射。 聚偏二氟乙烯聚合物选自:聚偏氟乙烯,聚偏氟乙烯 - 三氟乙烯P(VDF-TrFE),聚偏氟乙烯四氟乙烯P(VDF-TFE),聚偏二氟乙烯三氟乙烯 - 六氟丙烯P(VDF-TFE-HFE)和聚偏二氟乙烯 氟化六氟丙烯P(VDF-HFE)。
    • 23. 发明授权
    • Ink jetting device having metal electrodes with minimal electrical connections
    • 具有金属电极的喷墨装置具有最小的电连接
    • US06203144B1
    • 2001-03-20
    • US08404086
    • 1995-03-14
    • Qiming Zhang
    • Qiming Zhang
    • B41J2045
    • B41J2/14209B41J2002/14225
    • An ink jetting device includes a wall that constitutes at least a part of an ink channel and is formed of piezoelectric ceramic material polarized in one direction. A first electrode is formed wholly over one surface of the wall, a second electrode is formed partially on the other surface of the wall, and a third electrode is formed at a position that is spaced from the second electrode on the other surface of the wall. A controller is connected to the second and third electrodes but is not connected to the first electrode. The controller induces a potential difference between the second and third electrodes to deform the wall with a piezoelectric effect, so that the ink in the ink channel is pressurized to jet an ink droplet from the ink channel.
    • 喷墨装置包括构成油墨通道的至少一部分的壁,并且由在一个方向上偏振的压电陶瓷材料形成。 第一电极整体地形成在壁的一个表面上,第二电极部分地形成在壁的另一个表面上,并且第三电极形成在与壁的另一个表面上的第二电极间隔开的位置 。 控制器连接到第二和第三电极,但是不连接到第一电极。 控制器引起第二和第三电极之间的电位差,以压电效应使壁变形,使得墨水通道中的墨水被加压以从墨水通道喷射墨滴。
    • 24. 发明授权
    • Ink jet apparatus
    • 喷墨设备
    • US5914739A
    • 1999-06-22
    • US767523
    • 1996-12-16
    • Qiming Zhang
    • Qiming Zhang
    • B41J2/045B41J2/055B41J2/14B41J2/16
    • B41J2/14209B41J2002/14379B41J2202/11
    • An ink jet apparatus includes a plurality of ink chambers each having a front end and a rear end, a manifold provided to introduce ink into each ink chamber with a front side surface on a side near the front end of each ink chamber, and a nozzle provided at the front end of each ink chamber. Ink is jetted from the nozzle by applying pressure to the ink contained in each ink chamber. A position of the manifold is such that a distance between the front side surface of the manifold and the rear end of each ink chamber is set to 0.2 mm or more, and a distance between the front side surface of the manifold and the nozzle is set to 3 mm or more. Accordingly, pressure necessary for jetting ink droplets can be maintained for a relatively long period of time. Therefore, the ink can be smoothly introduced from the manifold into each ink chamber, thereby improving print quality.
    • 一种喷墨设备包括多个墨室,每个墨室具有前端和后端;歧管,用于将油墨引入每个墨室中,其前侧面靠近每个墨室的前端;喷嘴 设置在每个墨水室的前端。 通过对包含在每个墨水室中的墨水施加压力,从喷嘴喷射墨水。 歧管的位置使得歧管的前侧表面和每个墨水室的后端之间的距离设定为0.2mm以上,并且设置歧管的前侧表面与喷嘴之间的距离 至3mm以上。 因此,喷墨墨滴所需的压力可以保持较长的时间。 因此,油墨可以从歧管顺利地引入每个油墨室,从而提高打印质量。
    • 25. 发明授权
    • Ferroelectric relaxor actuator for an ink-jet print head
    • 用于喷墨打印头的铁电弛豫致动器
    • US5790156A
    • 1998-08-04
    • US844915
    • 1997-04-22
    • Jon C. MuttonHue P. LeQiming ZhangRonald L. AdamsL. Eric CrossThomas R. ShroutQiyue Chia Jiang
    • Jon C. MuttonHue P. LeQiming ZhangRonald L. AdamsL. Eric CrossThomas R. ShroutQiyue Chia Jiang
    • B41J2/045B41J2/14B41J2/16
    • B41J2/1623B41J2/04506B41J2/04581B41J2/04588B41J2/161B41J2/1625B41J2/1626B41J2/1631B41J2/1632B41J2/1643B41J2002/14387
    • A ferroelectric relaxor ceramic actuator material, such as lead magnesium niobate ("PMN"), has high electromechanical conversion efficiency, exhibits wide operating and manufacturing temperature ranges, does not require permanent polarization, and provides useful mechanical activity with reduced electrical drive voltages. A PMN actuator (66) may be bonded to an actuator diaphragm (64) with a high temperature soldering or brazing process. PMN material also has a diffuse Curie point range in which the dielectric constant (40), "d" coefficient (32), and dielectric loss (42) characteristics all rise to a peak and then fall as the temperature increases. A phase-change ink-jet print head (50) employs a PMN actuator that is compounded with lead titanate ("PT") to increase the temperature (T.sub.M) at which the peak dielectric constant occurs. The print head is operated at a temperature beyond the peak where the PMN:PT actuator "d" coefficient decreases as the temperature increases such that an increase in ink-jet drop ejection velocity caused by reduced ink viscosity is compensated for by a corresponding reduction in mechanical activity. The PMN:PT actuator thereby relaxes the temperature regulation and heat spreading requirements of the phase-change ink-jet print head.
    • 铁电弛豫陶瓷致动器材料,例如铌酸铅镁(“PMN”)具有高机电转换效率,表现出广泛的工作和制造温度范围,不需要永久极化,并且在降低的电驱动电压下提供有用的机械活动。 PMN致动器(66)可以通过高温焊接或钎焊工艺结合到致动器隔膜(64)。 PMN材料也具有扩散居里点范围,其中介电常数(40),“d”系数(32)和介电损耗(42)特性都全部升高到峰值,然后随温度升高而下降。 相变喷墨打印头(50)采用与钛酸铅(“PT”)复合的PMN致动器,以增加出现峰值介电常数的温度(TM)。 打印头的工作温度超过PMN:PT执行器“d”系数随着温度升高而降低的峰值温度,从而降低油墨粘度引起的喷墨滴落速度的增加可以通过相应的减小来补偿 机械活动。 因此,PMN:PT致动器松弛了相变喷墨打印头的温度调节和散热要求。
    • 26. 发明授权
    • Ink ejecting device having alternating ejecting channels and
non-ejecting channels
    • 喷墨装置具有交替的喷射通道和不喷射通道
    • US5646661A
    • 1997-07-08
    • US323721
    • 1994-10-18
    • Hiroki AsaiQiming ZhangHiroto Sugahara
    • Hiroki AsaiQiming ZhangHiroto Sugahara
    • B41J2/14B41J2/16B41J2/045
    • B41J2/1623B41J2/14209B41J2/1609B41J2/1618B41J2/1632B41J2/1646
    • An ink ejecting device includes ink channels intercommunicating with slits and air channels intercommunicating with another slits. The ink channels and the air channels have a narrow shape with a rectangular cross-section, and all of the ink channels are filled with ink and the air channels are filled with air. An LSI chip applies a voltage V to a pattern conducting to metal electrodes positioned in air channels located at both sides of an ink channel from which the ink is to be ejected and connects the other patterns connected to metal electrodes in other air channels not adjacent the ejecting ink channel and a pattern conducting to the metal electrodes of the non-ejecting ink channels to a ground line. Therefore, the ink ejecting device of the above structure requires no insulation between ink and electrodes as the working electrodes do not contact the ink.
    • 喷墨装置包括与狭缝相互连通的墨水通道和与另一狭缝相互连通的空气通道。 油墨通道和空气通道具有矩形横截面的窄形状,并且所有油墨通道都填充有油墨,空气通道充满空气。 LSI芯片将电压V施加到位于位于要从其喷射墨水的墨水通道两侧的空气通道中的金属电极的图案,并将与金属电极连接的其它图案连接到不邻近的其它空气通道 喷射油墨通道和向非喷射油墨通道的金属电极传导到地线的图案。 因此,由于工作电极不接触墨水,所以上述结构的墨水喷射装置不需要油墨和电极之间的绝缘。