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    Inkjet nozzle with reduced fluid inertia and viscous drag
    1.
    发明申请
    Inkjet nozzle with reduced fluid inertia and viscous drag 有权
    喷墨喷嘴具有减少的流体惯性和粘性阻力

    公开(公告)号：US20070030312A1

    公开(公告)日：2007-02-08

    申请号：US11545509

    申请日：2006-10-11

    申请人： Kia Silverbrook ,  Angus North ,  Samuel Mallinson ,  Mehdi Azimi ,  Gregory McAvoy

    发明人： Kia Silverbrook ,  Angus North ,  Samuel Mallinson ,  Mehdi Azimi ,  Gregory McAvoy

    IPC分类号： B41J2/05

    CPC分类号： B41J2/1601 ,  B41J2/1404 ,  B41J2/14072 ,  B41J2/1412 ,  B41J2/1603 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2/1631 ,  B41J2/1635 ,  B41J2/1639 ,  B41J2/1642 ,  B41J2/1645 ,  B41J2/1646 ,  B41J2002/14362 ,  B41J2002/1437 ,  B41J2002/14475 ,  B41J2002/14491 ,  B41J2202/19 ,  B41J2202/20 ,  B41J2202/21

    摘要： A thermal inkjet printhead with heater elements disposed in respective bubble forming chambers for heating a water-based printing fluid to form a gas bubble for ejecting a drop of the printing fluid from the nozzle. The heater is separated from the nozzle by less than 5 μm at their closest points and the nozzle length is less than 5 μm. The volume of liquid between the heater and the nozzle determines the inertia of the liquid and its acceleration in response to bubble formation. Moving the heater closer to the nozzle reduces the inertia of the liquid and increases its acceleration, so a lower bubble impulse is needed to eject a drop. This allows the printhead to use smaller heater elements with lower power requirements. Viscous drag in the nozzle reduces the momentum of fluid flowing through the nozzle. The viscous drag increases as the nozzle length (in the direction of fluid flow) increases. By reducing the nozzle length, a lower bubble impulse is needed to eject a drop. This also allows the printhead to use smaller heater elements with lower power requirements.

    摘要翻译： 一种热喷墨打印头，其具有设置在各个气泡形成室中的加热器元件，用于加热水性印刷流体以形成用于从喷嘴喷射一滴印刷液体的气泡。 加热器在最近的点处与喷嘴分开小于5um，喷嘴长度小于5um。 加热器和喷嘴之间的液体体积决定了液体的惯性及其响应气泡形成的加速度。 将加热器靠近喷嘴移动可减少液体的惯性并增加其加速度，因此需要较低的气泡脉冲来喷射液滴。 这允许打印头使用具有较低功率要求的较小的加热器元件。 喷嘴中的粘性阻力减小了流经喷嘴的流体的动量。 随着喷嘴长度（在流体流动方向），粘性阻力增加。 通过减小喷嘴长度，需要较低的气泡脉冲来喷射液滴。 这也允许打印头使用较低功率要求的较小的加热元件。

    Inkjet printhead with low thermal product layer
    2.
    发明申请
    Inkjet printhead with low thermal product layer 失效
    具有低热产品层的喷墨打印头

    公开(公告)号：US20060221137A1

    公开(公告)日：2006-10-05

    申请号：US11097310

    申请日：2005-04-04

    申请人： Kia Silverbrook ,  Gregory McAvoy ,  Angus North ,  Samuel Mallinson ,  Mehdi Azimi ,  Paul Reichl

    发明人： Kia Silverbrook ,  Gregory McAvoy ,  Angus North ,  Samuel Mallinson ,  Mehdi Azimi ,  Paul Reichl

    IPC分类号： B41J2/05

    CPC分类号： B41J2/1642 ,  B41J2/1412 ,  B41J2/155 ,  B41J2/1601 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2/1631 ,  B41J2/1639 ,  B41J2/1645 ,  B41J2/1646 ,  B41J2002/1437 ,  B41J2002/14491 ,  B41J2202/20

    摘要： A thermal inkjet printhead with generally planar heater elements disposed in respective bubble forming chambers such that they are bonded on one side to the chamber so that the other side faces into the chamber. Each heater element receives an energizing pulse to heat ejectable liquid above its boiling point to form a gas bubble on the side facing into the chamber, whereby the gas bubble causes the ejection of a drop of the ejectable liquid from the nozzle. The chamber has a dielectric layer proximate the side of the heater element bonded to the chamber. The dielectric layer has a thermal product less than 1495 Jm−2K−1s−1/2, the thermal product being (ρCk)1/2, where ρ is the density of the layer, C is specific heat of the layer and k is thermal conductivity of the layer. The present invention reduces the drop ejection energy and the heat dissipation into the printhead IC by improving the thermal isolation between the heater and the substrate.

    摘要翻译： 一种热喷墨打印头，其具有大致平面的加热器元件，其设置在相应的气泡形成室中，使得它们在一侧结合到腔室，使得另一侧面向腔室。 每个加热器元件接收一个激励脉冲，以在其沸点之上加热可喷射的液体，以在面向腔室的一侧形成气泡，由此气泡引起喷射液滴从喷嘴喷出。 腔室具有靠近加热器元件侧面的电介质层，该电介质层与腔室结合。 电介质层的热产物为（rhoCk）小于1495J / cm 2的热产物， 其中rho是层的密度，C是层的比热，k是层的热导率。 本发明通过改善加热器和基板之间的热隔离来减小液滴喷射能量和散热到打印头IC中。

    Printhead nozzle with reduced ink inertia and viscous drag
    5.
    发明申请
    Printhead nozzle with reduced ink inertia and viscous drag 有权
    打印头喷嘴减少油墨惯性和粘滞阻力

    公开(公告)号：US20050280672A1

    公开(公告)日：2005-12-22

    申请号：US11212637

    申请日：2005-08-29

    申请人： Kia Silverbrook ,  Angus North ,  Samuel Mallinson ,  Mehdi Azimi ,  Gregory McAvoy

    发明人： Kia Silverbrook ,  Angus North ,  Samuel Mallinson ,  Mehdi Azimi ,  Gregory McAvoy

    IPC分类号： B41J2/04 ,  B41J2/14 ,  B41J2/16

    CPC分类号： B41J2/1601 ,  B41J2/1404 ,  B41J2/14072 ,  B41J2/1412 ,  B41J2/1603 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2/1631 ,  B41J2/1635 ,  B41J2/1639 ,  B41J2/1642 ,  B41J2/1645 ,  B41J2/1646 ,  B41J2002/14362 ,  B41J2002/1437 ,  B41J2002/14475 ,  B41J2002/14491 ,  B41J2202/19 ,  B41J2202/20 ,  B41J2202/21

    摘要： A thermal inkjet printhead with heater elements disposed in respective bubble forming chambers for heating part of the ejectable liquid above its boiling point to form a gas bubble that causes the ejection of a drop of the ejectable liquid from the nozzle, wherein, the heater is separated from the nozzle by less than 5 μm at their closest points; the nozzle length is less than 5 μm; and the ejectable liquid has a viscosity less than 5 cP. The volume of liquid between the heater and the nozzle determines the inertia of the liquid and its acceleration in response to bubble formation. Moving the heater closer to the nozzle reduces the inertia of the liquid and increases its acceleration, so a lower bubble impulse is needed to eject a drop. This allows the printhead to use smaller heater elements with lower power requirements. Viscous drag in the nozzle reduces the momentum of fluid flowing through the nozzle. The viscous drag increases as the nozzle length (in the direction of fluid flow) increases. By reducing the nozzle length, a lower bubble impulse is needed to eject a drop. This also allows the printhead to use smaller heater elements with lower power requirements.

    摘要翻译： 一种热喷墨打印头，其具有设置在相应的气泡形成室中的加热器元件，用于将可喷射液体的一部分加热到其沸点之上，以形成气泡，该气泡导致从喷嘴排出一滴可喷射液体，其中，加热器被分离 在最接近的点处，喷嘴小于5um; 喷嘴长度小于5um; 并且可喷射液体的粘度小于5cP。 加热器和喷嘴之间的液体体积决定了液体的惯性及其响应气泡形成的加速度。 将加热器靠近喷嘴移动可减少液体的惯性并增加其加速度，因此需要较低的气泡脉冲来喷射液滴。 这允许打印头使用具有较低功率要求的较小的加热器元件。 喷嘴中的粘性阻力减小了流经喷嘴的流体的动量。 随着喷嘴长度（在流体流动方向），粘性阻力增加。 通过减小喷嘴长度，需要较低的气泡脉冲来喷射液滴。 这也允许打印头使用较低功率要求的较小的加热元件。

    Printhead Module Assembly With A Flexible PCB
    8.
    发明申请
    Printhead Module Assembly With A Flexible PCB 失效
    带柔性PCB的打印头组件

    公开(公告)号：US20080100673A1

    公开(公告)日：2008-05-01

    申请号：US11965696

    申请日：2007-12-27

    申请人： Kia Silverbrook ,  Angus North ,  Samuel Mallinson

    发明人： Kia Silverbrook ,  Angus North ,  Samuel Mallinson

    IPC分类号： B41J2/05

    CPC分类号： B41J2/0458 ,  B41J2/0459 ,  B41J2/04591 ,  B41J2/14427 ,  B41J2002/14491

    摘要： The invention relates to a printhead module assembly for a pagewidth printer system. The module assembly includes a printhead integrated circuit (IC) manufactured using a micro-electromechanical systems (MEMS) process, and a flexible printed circuit board electrically connected to the integrated circuit for supplying power and data thereto. The module assembly also includes a top channel layer supporting the IC, the top channel layer defining a number of slots therein, and an upper layer defining holes that are aligned with inner parts of the slots of the top channel layer, the upper layer further defining a number of channels. Further included is a mid layer defining a number of holes which are aligned with ends of the channel in the upper layer. A lower layer defines channels for supplying ink and compressed air to the IC via the layers such layers stacked to form an ink distribution assembly.

    摘要翻译： 本发明涉及一种用于页宽打印机系统的打印头模块组件。 模块组件包括使用微机电系统（MEMS）工艺制造的打印头集成电路（IC）和电连接到用于向其提供电能和数据的集成电路的柔性印刷电路板。 模块组件还包括支撑IC的顶部通道层，在其中限定多个槽的顶部通道层，以及限定与顶部通道层的槽的内部部分对准的孔的上层，上层进一步限定 一些渠道。 进一步包括限定与上层中的通道的端部对准的多个孔的中间层。 下层限定了通过堆叠形成油墨分配组件的这些层的层向IC供应油墨和压缩空气的通道。

    Printhead heaters with short pulse time
    9.
    发明申请
    Printhead heaters with short pulse time 有权
    打印头加热器脉冲时间短

    公开(公告)号：US20050280671A1

    公开(公告)日：2005-12-22

    申请号：US11210687

    申请日：2005-08-25

    申请人： Kia Silverbrook ,  Angus North ,  Samuel Mallinson

    发明人： Kia Silverbrook ,  Angus North ,  Samuel Mallinson

    IPC分类号： B41J2/04 ,  B41J2/05

    CPC分类号： B41J2/0458 ,  B41J2/0459 ,  B41J2/04591 ,  B41J2/14427 ,  B41J2002/14491

    摘要： A thermal inkjet printhead with heater elements disposed in respective bubble forming chambers whereby each heater element is configured for receiving an energizing pulse to form a gas bubble in an ejectable liquid that causes the ejection of a drop of the ejectable liquid from the nozzle. The energizing pulse has duration less than 1.5 micro-seconds (μs) and the nozzles are “self cooling”, in the sense that in the sense that the only heat removal required by the chip is the heat removed by ejected droplets. The printhead is designed for operation with reduced pulse duration, so the amount of heat that diffuses into the liquid and the substrate prior to nucleation of the vapor bubble is reduced. This facilitates self cooling operation.

    摘要翻译： 一种热喷墨打印头，其具有设置在相应气泡形成室中的加热器元件，由此每个加热器元件构造成用于接收激励脉冲，以在可喷射液体中形成气泡，从而引起喷射液体从喷嘴喷射。 激励脉冲具有小于1.5微秒（mus）的持续时间，并且喷嘴是“自冷却”，这意味着芯片所需的唯一除热是喷射液滴除去的热量。 打印头设计用于减少脉冲持续时间的操作，因此在蒸发气泡成核之前扩散到液体和基底中的热量减少。 这有利于自冷作业。