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    • 21. 发明授权
    • Steering fluid device and method for increasing the angle of deflection of ink droplets generated by an asymmetric heat-type inkjet printer
    • 用于增加由不对称热式喷墨打印机产生的墨滴的偏转角度的转向流体装置和方法
    • US06520629B1
    • 2003-02-18
    • US09675831
    • 2000-09-29
    • Ravi SharmaJohn A. LebensChristopher N. DelametterDavid P. Trauernicht
    • Ravi SharmaJohn A. LebensChristopher N. DelametterDavid P. Trauernicht
    • B41J209
    • B41J2/105B41J2/03B41J2/09B41J2002/032B41J2202/16
    • An asymmetric heat-type inkjet printer includes an inkjet printhead having at least one nozzle for continuously ejecting a stream of ink that forms a train of ink droplets, a heater disposed adjacent to the nozzle for selectively thermally deflecting the droplet forming stream of ink either toward a printing medium, or an ink gutter that captures and recirculates the ink. To increase the angle of deflection that the intermittently operated heater imposes on the droplet-forming stream of ink, a steering fluid assembly is provided in communication with the inkjet nozzle for co-extruding a thin film of fluid around the ink which has a higher volatility and a lower thermal diffusivity than the liquid forming the ink. When the ink is water based, the steering fluid may be, for example, polyethylene oxide based surfactant, or isopropanol. The invention allows water-based ink droplets in such printers to be deflected at greater angles in response to heat pulses generated by the heater, thereby enhancing printing accuracy and speed.
    • 不对称热式喷墨打印机包括具有至少一个喷嘴的喷墨打印头,用于连续喷射形成墨滴系列的墨水流;邻近喷嘴设置的加热器,用于选择性地将墨滴形成墨水热偏转到 打印介质或捕获并再循环墨水的墨槽。 为了增加间歇操作的加热器对墨滴形成流的偏转角度,提供了一种与喷墨喷嘴连通的转向流体组件,用于将具有较高挥发性的油墨周围的薄膜流体共挤出 并且比形成油墨的液体具有更低的热扩散率。 当油墨是水基时,转向流体可以是例如聚环氧乙烷基表面活性剂或异丙醇。 本发明允许这种打印机中的水基墨滴响应于加热器产生的加热脉冲以更大的角度偏转,从而提高打印精度和速度。
    • 23. 发明申请
    • FLUID EJECTION USING MEMS COMPOSITE TRANSDUCER
    • 使用MEMS复合传感器的流体喷射
    • US20120268513A1
    • 2012-10-25
    • US13089542
    • 2011-04-19
    • James D. HuffmanChristopher N. DelametterDavid P. Trauernicht
    • James D. HuffmanChristopher N. DelametterDavid P. Trauernicht
    • B41J29/38B41J2/045
    • B41J2/14427B41J2/14201B41J2/14282B41J2/14314
    • A method of ejecting a drop of fluid includes providing a fluid ejector. The fluid ejector includes a substrate, a MEMS transducing member, a compliant membrane, walls, and a nozzle. The substrate includes a cavity and a fluidic feed. A first portion of the MEMS transducing member is anchored to the substrate. A second portion of the MEMS transducing member extends over at least a portion of the cavity and is free to move relative to the cavity. The compliant membrane is positioned in contact with the MEMS transducing member. A first portion of the compliant membrane covers the MEMS transducing member, A second portion of the compliant membrane being anchored to the substrate. Walls define a chamber that is fluidically connected to the fluidic feed. At least the second portion of the MEMS transducing member is enclosed within the chamber. A quantity of fluid is supplied to the chamber through the fluidic feed. An electrical pulse is applied to the MEMS transducing member to eject a drop of fluid through the nozzle.
    • 喷射液滴的方法包括提供流体喷射器。 流体喷射器包括基板,MEMS转换构件,柔性膜,壁和喷嘴。 衬底包括空腔和流体进料。 MEMS转换构件的第一部分被锚定到基底。 MEMS转换构件的第二部分在空腔的至少一部分上延伸并且相对于空腔自由移动。 柔性膜定位成与MEMS换能件接触。 柔性膜的第一部分覆盖MEMS转导构件。柔性膜的第二部分被锚固到基底上。 壁限定了流体连接到流体进料的室。 至少MEMS转换构件的第二部分被封闭在腔室内。 通过流体进料将一定量的流体供应到腔室。 电脉冲被施加到MEMS转换构件以通过喷嘴喷射一滴液体。
    • 30. 发明授权
    • Continuous ink jet printer with micro-valve deflection mechanism and method of controlling same
    • 具有微型阀偏转机构的连续喷墨打印机及其控制方法
    • US06474795B1
    • 2002-11-05
    • US09468987
    • 1999-12-21
    • John A. LebensChristopher N. DelametterDavid P. Trauernicht
    • John A. LebensChristopher N. DelametterDavid P. Trauernicht
    • B41J2105
    • B41J2/03B41J2/09B41J2/105B41J2002/032B41J2202/16B41J2202/22
    • A continuous inkjet printer in which a continuous ink stream is deflected at the printhead nozzle bore without the need for charged deflection plates or tunnels. The printhead includes a primary ink delivery channel which delivers a primary flow of pressurized ink through an ink staging chamber to the nozzle bore to create an undeflected ink stream from the printhead. A secondary ink delivery channel adjacent to the primary channel is controlled by a thermally actuated valve to selectively create a lateral flow of pressurized ink into the primary flow thereby causing the emitted ink stream to deflect in a direction opposite to the direction from which the secondary ink stream impinges the primary ink stream in the ink staging chamber. A method of fabricating the printhead includes layering of the thermally actuated valve over the secondary ink delivery channel formed in a silicon substrate and creating the ink staging chamber over the delivery channels with sacrificial material which is later removed through the nozzle bore etched into the chamber wall formed over the sacrificial material.
    • 连续喷墨打印机,其中连续墨水流在打印头喷嘴孔处偏转,而不需要带电偏转板或隧道。 打印头包括主要的墨水输送通道,其将加压油墨的一次流通过墨水分级室输送到喷嘴孔,以产生来自打印头的未偏转的墨水流。 邻近主要通道的次要油墨输送通道由热致动阀控制,以选择性地产生加压油墨的侧向流入主流,从而使排出的油墨流沿与二次油墨的方向相反的方向偏转 液流撞击墨水分级室中的主墨水流。 制造打印头的方法包括在形成在硅衬底中的辅助墨水输送通道上层叠热致动阀,并且通过牺牲材料在输送通道上产生墨水分级室,该牺牲材料随后通过蚀刻到腔壁中的喷嘴孔去除 形成在牺牲材料上。