公开(公告)号：US4728969A

公开(公告)日：1988-03-01

申请号：US884845

申请日：1986-07-11

申请人： Hue P. Le ,  Joy Roy ,  Ronald L. Adams ,  James C. Oswald ,  Jeffery J. Anderson

发明人： Hue P. Le ,  Joy Roy ,  Ronald L. Adams ,  James C. Oswald ,  Jeffery J. Anderson

IPC分类号： B41J2/045 ,  B41J2/04 ,  B41J2/14 ,  G01D15/18

CPC分类号： B41J2/14298 ,  B41J2/04 ,  B41J2002/14387 ,  B41J2202/02

摘要： An air-assisted drop-on-demand ink jet head 10 has a single compartment ink chamber 14 and is designed for operation over a wide range of ink drop repetition rates, including extremely high repetition rates, such as twenty kilohertz. The components included in the ink jet head have natural resonance frequencies which are greater than the desired maximum drop generation frequency of the ink jet head. In addition, the natural frequency of each of the components of the ink jet head are sufficiently different from one another to prevent intercoupling. Ink is supplied to the ink chamber 14 via a supply inlet passageway 38 which has a cross-sectional area which is sized large enough to allow the supply of ink to the ink chamber. Yet, this area is small enough so that the natural frequencies of ink in the ink inlet do not significantly alter drop generating pressure pulses in the ink chamber 14.

摘要翻译： 空气辅助按需喷墨头10具有单室墨水室14，并且被设计用于在广泛的墨滴重复率下操作，包括极高的重复率，例如二十千赫兹。 包括在喷墨头中的部件具有大于喷墨头的期望的最大液滴产生频率的天然共振频率。 此外，喷墨头的每个部件的固有频率彼此充分地不同，以防止互耦。 墨水通过供给入口通道38供应到墨室14，供应入口通道38的横截面面积大到足以允许向墨水室供应墨水。 然而，该区域足够小，使得墨水入口中的油墨的固有频率不会显着改变墨水室14中产生的压力脉冲。

公开(公告)号：US4734706A

公开(公告)日：1988-03-29

申请号：US838240

申请日：1986-03-10

申请人： Hue P. Le ,  James C. Oswald

发明人： Hue P. Le ,  James C. Oswald

IPC分类号： B41J2/045 ,  B41J2/055 ,  B41J2/20 ,  G01D15/18

CPC分类号： B41J2/20

摘要： A viscoelastic and ink-immiscible fluid is used to form a membrane over the ink orifice of a drop-on-demand, pressure pulse ink jet head. The membrane lies in a plane perpendicular to the direction of emission of ink drops, and provides a barrier between the ink orifice and the external atmosphere. Evaporation of the ink, or entry of contaminants including air into the ink, is thus inhibited. The elimination of evaporative clogging then permits the use of a smaller orifice. Wetting of the exterior surface of the ink jet head by the flow of ink through the ink orifice is also inhibited, thus making possible the production of more uniform ink drops that will emerge in a constant direction. The elastic property of the membrane permits the passage of an ink drop therethrough, followed by the closing up of the membrane. The viscous property of the membrane permits it to absorb any energy of a pressure pulse that is not consumed in ejecting an ink drop, thus inhibiting the occurrence of pressure oscillations that could cause either variations in the speed of ejected ink drops or the appearance of satellite ink droplets.

摘要翻译： 使用粘弹性和油墨不混溶的流体在按需喷墨压力脉冲喷墨头的油墨孔上形成膜。 膜位于垂直于墨滴发射方向的平面上，并且在墨孔和外部气氛之间提供阻挡层。 因此，墨水的蒸发或包括空气在内的污染物进入墨水中。 消除蒸发堵塞然后允许使用较小的孔口。 通过油墨通过油墨孔流动喷墨头的外表面的润湿也被抑制，从而使得可能产生将在恒定方向上出现的更均匀的墨滴。 膜的弹性可使墨滴从其中通过，随后关闭膜。 膜的粘性使其能够吸收喷射墨滴时不消耗的压力脉冲的任何能量，从而抑制压力振荡的发生，这可能导致喷射墨滴速度的变化或卫星的出现 墨滴。

公开(公告)号：US4613875A

公开(公告)日：1986-09-23

申请号：US720843

申请日：1985-04-08

申请人： Hue P. Le ,  Charles W. Jaeger ,  James C. Oswald

发明人： Hue P. Le ,  Charles W. Jaeger ,  James C. Oswald

IPC分类号： B41J2/045 ,  B41J2/04 ,  B41J2/14 ,  G01D15/18

CPC分类号： B41J2/04 ,  B41J2/14298 ,  B41J2202/02

摘要： An air assisted drop-on-demand ink jet head 10 has an ink chamber with an ink drop-forming orifice outlet 23 from which ink drops are generated in response to pressure waves caused by a piezoelectric crystal 56. The ink drops are carried by air outwardly through an external orifice 24 and toward printing medium. The internal orifice outlet 23 is centered in a projecting structure 48 which extends toward the external orifice 24. In one form, the projection 48 is of a frustoconical or mesa-like shape. Air flowing past the top of the projection prevents ink from wetting anything but the top of the projection, resulting in highly uniform ink drop formation with a single uniform dot being produced on the printing medium in response to each pressure wave.

摘要翻译： 空气辅助按需喷墨头10具有具有墨滴形成孔出口23的墨室，响应于由压电晶体56引起的压力波而产生墨滴。墨滴由空气携带 向外通过外部孔口24并朝向打印介质。 内部孔口出口23位于向外部孔口24延伸的突出结构48中心。在一种形式中，突出部48具有截头圆锥形或台面状形状。 流过突起顶部的空气防止油墨润湿除了突起的顶部以外的任何东西，导致高度均匀的墨滴形成，在打印介质上响应于每个压力波产生单个均匀的点。

公开(公告)号：US5790156A

公开(公告)日：1998-08-04

申请号：US844915

申请日：1997-04-22

申请人： Jon C. Mutton ,  Hue P. Le ,  Qiming Zhang ,  Ronald L. Adams ,  L. Eric Cross ,  Thomas R. Shrout ,  Qiyue Chia Jiang

发明人： Jon C. Mutton ,  Hue P. Le ,  Qiming Zhang ,  Ronald L. Adams ,  L. Eric Cross ,  Thomas R. Shrout ,  Qiyue Chia Jiang

IPC分类号： B41J2/045 ,  B41J2/14 ,  B41J2/16

CPC分类号： B41J2/1623 ,  B41J2/04506 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/161 ,  B41J2/1625 ,  B41J2/1626 ,  B41J2/1631 ,  B41J2/1632 ,  B41J2/1643 ,  B41J2002/14387

摘要： 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.

摘要翻译： 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。

公开(公告)号：US5462591A

公开(公告)日：1995-10-31

申请号：US239105

申请日：1994-05-06

申请人： B. M. Karandikar ,  Loc V. Bui ,  Hue P. Le

发明人： B. M. Karandikar ,  Loc V. Bui ,  Hue P. Le

IPC分类号： B41M5/00 ,  B41J2/01 ,  C09D11/00 ,  C09D11/02

CPC分类号： C09D11/30 ,  B41J2/01

摘要： An aqueous phase change ink contains a selected concentration of hyperthermogelling component that causes the ink to gel when its temperature is increased to its thermo-inversion point or when the concentration of the hyperthermogelling component is increased by evaporation, or substrate absorption, of water from the ink. The ink may be jetted directly onto a heated and/or absorptive substrate or jetted onto a cooler and/or hydrophobic surface before being transferred to the substrate. The thermo-inversion point is preferably about ambient temperature, and the preferred hyperthermogelling component is a nonionic surfactant, such as an ethylene oxide propylene oxide block copolymer surfactant.

摘要翻译： 含水相变油墨含有选定浓度的超热凝胶组分，当其温度升高到其热转化点时，或者当通过蒸发或底物吸收来增加超热凝胶组分的浓度时，其使油墨凝胶化 墨水。 油墨可以直接喷射到加热和/或吸收的基底上，或者在转移到基底之前喷射到更冷和/或疏水的表面上。 热转化点优选为环境温度，优选的超热凝胶组分为非离子表面活性剂，例如环氧乙烷环氧丙烷嵌段共聚物表面活性剂。

公开(公告)号：US06783213B2

公开(公告)日：2004-08-31

申请号：US10272519

申请日：2002-10-15

申请人： Hue P. Le ,  Hoi P. Le ,  Thanh P. Le ,  Linh B. Tran

发明人： Hue P. Le ,  Hoi P. Le ,  Thanh P. Le ,  Linh B. Tran

IPC分类号： B41J2045

CPC分类号： B41J2/1626 ,  B23K1/06 ,  B23K20/10 ,  B23K35/001 ,  B23K35/262 ,  B41J2/161 ,  B41J2/1623 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2/1634 ,  B41J2/1642 ,  B41J2/1643 ,  B41J2/1646 ,  B41J2002/14306 ,  B41J2002/14419 ,  Y10T29/42 ,  Y10T29/49144 ,  Y10T29/49149 ,  Y10T29/494 ,  Y10T29/49401

摘要： There is disclosed a piezoelectric ceramic ink-jet print head and made by an inventive ultrasonic bonding process. Specifically, there are disclosed several improved features of ink jet print heads, including a more cost-effective bonding process using an ultrasonic bonding technique, an improved piezoelectric ceramic crystal pattern, and improved print head-piezoelectric electrical contacts. Further, there is disclosed an ultrasonic bonding process joining metallic objects with ultrasonic energy.

摘要翻译： 公开了一种压电陶瓷喷墨打印头并通过本发明的超声波接合工艺制成。 具体地，公开了喷墨打印头的几个改进的特征，包括使用超声波接合技术，改进的压电陶瓷晶体图案和改进的打印头 - 压电电触点的更具成本效益的粘结工艺。 此外，公开了将金属物体与超声波能量接合的超声波接合工艺。

公开(公告)号：US06464324B1

公开(公告)日：2002-10-15

申请号：US09495071

申请日：2000-01-31

申请人： Hue P. Le ,  Hoi P. Le ,  Thanh P. Le

发明人： Hue P. Le ,  Hoi P. Le ,  Thanh P. Le

IPC分类号： B41J216

CPC分类号： B41J2/1626 ,  B23K1/06 ,  B23K20/10 ,  B23K35/001 ,  B23K35/262 ,  B41J2/161 ,  B41J2/1623 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2/1634 ,  B41J2/1642 ,  B41J2/1643 ,  B41J2/1646 ,  B41J2002/14306 ,  B41J2002/14419 ,  Y10T29/42 ,  Y10T29/49144 ,  Y10T29/49149 ,  Y10T29/494 ,  Y10T29/49401

摘要： There is disclosed a piezoelectric ceramic ink-jet print head and made by an inventive ultrasonic bonding process. Specifically, there are disclosed several improved features of inkjet print heads, including a more cost-effective bonding process using an ultrasonic bonding technique, an improved piezoelectric ceramic crystal pattern and improved print head-piezoelectric electrical contacts. Further, there is disclosed an ultrasonic bonding process joining metallic objects with ultrasonic energy.

摘要翻译： 公开了一种压电陶瓷喷墨打印头并通过本发明的超声波接合工艺制成。 具体地，公开了喷墨打印头的几个改进的特征，包括使用超声波粘合技术，改进的压电陶瓷晶体图案和改进的打印头 - 压电电触点的更具成本效益的粘接工艺。 此外，公开了将金属物体与超声波能量接合的超声波接合工艺。

公开(公告)号：US5764252A

公开(公告)日：1998-06-09

申请号：US470796

申请日：1995-06-06

申请人： Ronald F. Burr ,  Wayne Jaeger ,  A. J. Rogers ,  James D. Padgett ,  Hue P. Le ,  Jon C. Mutton

发明人： Ronald F. Burr ,  Wayne Jaeger ,  A. J. Rogers ,  James D. Padgett ,  Hue P. Le ,  Jon C. Mutton

IPC分类号： B41J2/21 ,  B41J2/01

CPC分类号： B41J2/2114

摘要： Gray scale ink jet printing method and apparatus produce a high quality image having varying color intensities. This is achieved by mixing a colored phase change ink with varying amounts of a clear phase change ink base, thereby producing multiple gray scale levels of each color. The mixing either can be performed prior to placement of the phase change ink in the printer, or can be performed within the printer to produce different levels of color intensity during the printing process.

摘要翻译： 灰度喷墨打印方法和装置产生具有不同颜色强度的高质量图像。 这是通过将有色相变油墨与不同量的透明相变油墨基底混合，从而产生每种颜色的多个灰度级水平来实现的。 混合之前可以在将相变油墨放入打印机之前执行，或者可以在打印机内执行，以在打印过程中产生不同程度的颜色强度。

公开(公告)号：US20170086494A1

公开(公告)日：2017-03-30

申请号：US15049125

申请日：2016-02-21

申请人： Hue P. Le ,  Tai Ngoc Dang ,  Tue Nguyen

发明人： Hue P. Le ,  Tai Ngoc Dang ,  Tue Nguyen

IPC分类号： A23P20/15

CPC分类号： A23P20/15 ,  A23L5/40 ,  A23P20/10 ,  A23P2020/253 ,  A23V2002/00 ,  B41J3/407 ,  B41M3/00 ,  B41M5/0017 ,  B41M5/0047

摘要： Ink jet printing on a liquid medium can be performed using a membrane underlayer. A drop of a liquid can spread on the surface of the liquid medium, forming a substrate for the ink jet printing. The liquid ink can include a thermogelling component which can gelled, e.g., forming gel droplets, when contacting the membrane.

公开(公告)号：US4727378A

公开(公告)日：1988-02-23

申请号：US884846

申请日：1986-07-11

申请人： Hue P. Le ,  Jeffrey J. Anderson ,  Guenther W. Wimmer ,  Monte J. Rhoads ,  Ted E. Deur

发明人： Hue P. Le ,  Jeffrey J. Anderson ,  Guenther W. Wimmer ,  Monte J. Rhoads ,  Ted E. Deur

IPC分类号： B41J2/175 ,  B41J2/17 ,  B41J2/19 ,  G01D15/16

CPC分类号： B41J2/1707 ,  B41J2/19

摘要： An ink jet head 10 has an ink chamber 14 which receives ink from an ink inlet passageway 38. Pressure pulses applied to the ink chamber cause the ejection of ink drops from an ink drop forming orifice 23 and toward printing medium. A purging outlet 41 communicates with the ink chamber through a purging passageway 40. During purging, ink flows in a vortical path through the ink chamber 14 from the ink inlet passageway 38 to the purging outlet passageway 40. This sweeps air bubbles and contaminants from the ink chamber walls and removes them from the ink chamber. Ink pressure within the ink chamber 14 may be elevated to increase the flow of ink during purging. Also, a negative pressure may be applied to the purging outlet during purging. Variable frequency pressure pulses may also be applied to the ink chamber to assist the purging process.

摘要翻译： 喷墨头10具有从墨入口通道38接收墨水的墨室14.施加到墨室的压力脉冲导致墨滴从墨滴形成孔23喷射到打印介质。 清洗出口41通过清洗通道40与油墨室连通。在清洗过程中，油墨以涡旋路径从油墨入口通道38经过油墨室14流入清洗出口通道40.这样将气泡和污染物从 墨水室壁并将其从墨水室中取出。 油墨室14内的油墨压力可以升高以增加清洗期间油墨的流动。 此外，在净化期间可以将负压施加到清洗出口。 也可以将变频压力脉冲施加到墨室以帮助清洗过程。