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    Inkjet printhead comprising bonded heater element and dielectric layer with low thermal product
    11.
    发明授权
    Inkjet printhead comprising bonded heater element and dielectric layer with low thermal product 有权
    喷墨打印头包括结合的加热器元件和具有低热产物的介电层

    公开(公告)号：US07677702B2

    公开(公告)日：2010-03-16

    申请号：US12177872

    申请日：2008-07-22

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

    发明人： Kia Silverbrook ,  Gregory John McAvoy ,  Angus John North ,  Samuel George Mallinson ,  Mehdi Azimi ,  Paul Justin 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。 介电层的热积小于1495Jm-2K-1s-1/2，热产物为（＆amp; Ck）1/2，其中＆ 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。

    Inkjet printhead with low thermal product layer
    12.
    发明授权
    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：US07419249B2

    公开(公告)日：2008-09-02

    申请号：US11097310

    申请日：2005-04-04

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

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

    IPC分类号： B41J2/05 ,  B41J29/38

    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喷射液体，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。

    Inkjet printhead having MEMS sensors for directionally heated ink ejection
    13.
    发明授权
    Inkjet printhead having MEMS sensors for directionally heated ink ejection 失效
    喷墨打印头具有用于定向加热的喷墨的MEMS传感器

    公开(公告)号：US07857427B2

    公开(公告)日：2010-12-28

    申请号：US12138375

    申请日：2008-06-12

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

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

    IPC分类号： B41J2/05 ,  B41J2/04

    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： An inkjet printhead is provided having nozzles, bubble forming chambers containing ejectable ink, generally planar heater elements each bonded on one side to an associated chamber so that the other side faces into the chamber, a MEMS fluid sensor having a MEMS sensing element for detecting the presence or otherwise of the ejectable ink in the chamber, and control circuitry for measuring the current passing through the sensing element during its heating. The heater elements receive heating pulses to form gas bubbles in the ejectable ink on the side facing into the chamber which cause ink ejection from the nozzle. Each chamber has a dielectric layer proximate the side of the heater element which 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.

    摘要翻译： 喷墨打印头设置有喷嘴，包含可喷射墨水的气泡形成室，大体上平面的加热器元件，其一侧分别结合到相关联的腔室，使得另一侧面向腔室; MEMS流体传感器，其具有MEMS感测元件，用于检测 在室中存在或以其他方式喷射墨，以及用于测量在其加热期间通过感测元件的电流的控制电路。 加热器元件接收加热脉冲以在面向腔室的一侧的可喷射墨水中形成气泡，这导致从喷嘴喷墨。 每个室具有接近加热器元件侧面的电介质层，其具有小于1495Jm-2K-1s-1/2的热产物，热产物为（＆amp; Ck）1/2，其中＆ 是层的密度，C是层的比热，k是层的热导率。

    INKJET PRINTHEAD COMPRISING BONDED HEATER ELEMENT AND DIELECTRIC LAYER WITH LOW THERMAL PRODUCT
    15.
    发明申请
    INKJET PRINTHEAD COMPRISING BONDED HEATER ELEMENT AND DIELECTRIC LAYER WITH LOW THERMAL PRODUCT 有权
    包含结合加热器元件和低热产品的电介质层的打印机

    公开(公告)号：US20090002421A1

    公开(公告)日：2009-01-01

    申请号：US12177872

    申请日：2008-07-22

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

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

    IPC分类号： B41J29/38 ,  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−2 K−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喷射液体，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。 电介质层的热积小于1495Jm-2K-1s-1/2，热产物为（rhoCk）1/2，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。

    Inkjet nozzle with reduced fluid inertia and viscous drag
    17.
    发明授权
    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：US07261394B2

    公开(公告)日：2007-08-28

    申请号：US11545509

    申请日：2006-10-11

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

    发明人： Kia Silverbrook ,  Angus John North ,  Samuel George Mallinson ,  Mehdi Azimi ,  Gregory John 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 um at their closest points and the nozzle length is less than 5 um. 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。

    MEMS fluid sensor
    18.
    发明授权
    MEMS fluid sensor 有权
    MEMS流体传感器

    公开(公告)号：US08356885B2

    公开(公告)日：2013-01-22

    申请号：US12652683

    申请日：2010-01-05

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

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

    IPC分类号： B41J2/05

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

    摘要： A fluid sensor for detecting fluid in a chamber, has a MEMS sensing element of conductive material with a resistance that is a function of temperature, and electrical contacts for connection to an electrical power source for heating the sensing element with an electrical signal, so that control circuitry can measure the current passing through the sensing element during heating of the sensing element; and determine the temperature of the sensing element from the known applied voltage, the measured current and the known relationship between the current, resistance and temperature. As the temperature of the element will be greater if it is in the presence of gas rather than liquid, the sensor determines if there is liquid or gas in the chamber. This is particularly useful to detect if the chambers of an inkjet printhead are primed with ink.

    摘要翻译： 用于检测腔室中的流体的流体传感器具有导电材料的MEMS感测元件，其具有作为温度的函数的电阻，以及用于连接到用于利用电信号加热感测元件的电源的电触头，使得 控制电路可以在感测元件的加热期间测量通过感测元件的电流; 并根据已知的施加电压，测量的电流和电流，电阻和温度之间的已知关系确定感测元件的温度。 如果元件的温度在气体存在而不是液体的情况下会更大，则传感器确定腔室中是否存在液体或气体。 这对于检测喷墨打印头的腔室是否涂有油墨特别有用。

    Printhead Assembly Employing Modular Printheads And Common Substrate Channel
    19.
    发明申请
    Printhead Assembly Employing Modular Printheads And Common Substrate Channel 审中-公开
    使用模块化打印头和普通基板通道的打印头组件

    公开(公告)号：US20110228000A1

    公开(公告)日：2011-09-22

    申请号：US13117097

    申请日：2011-05-26

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

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

    IPC分类号： B41J2/145

    CPC分类号： B41J2/1601 ,  B41J2/1412 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2/1639 ,  B41J2/1642 ,  B41J11/0095 ,  B41J13/103 ,  B41J2002/14475 ,  B41J2002/14491 ,  B41J2202/20

    摘要： A printhead assembly for a pagewidth printer includes a substrate channel; a plurality of printhead modules positioned in the channel to form a pagewidth printhead module assembly; an ink hose positioned within the substrate channel to supply the printhead modules with ink; an extrusion for housing bus bars providing electrical power to the printhead modules; a cover plate securing a flex printed circuit board (PCB) in the assembly, the PCB forming a data bus to the printhead modules; and compressible conductive strips provided between the busbars abutting contacts on an upper side of parts of the flex PCB. The substrate channel defines a series of groups of holes through which the printhead modules are supplied with differently colored inks. The hose defines parallel channels extending a length of the hose, the channels connected to ink containers at one end and sealed with a channel extrusion cap at the other end.

    摘要翻译： 用于页宽打印机的打印头组件包括基板通道; 定位在通道中的多个打印头模块以形成页宽打印头模块组件; 位于衬底通道内的墨水软管，用于向打印头模块供应墨水; 用于容纳母线的挤出物，为打印头模块提供电力; 将柔性印刷电路板（PCB）固定在组件中的盖板，PCB形成到打印头模块的数据总线; 以及设置在汇流条之间的压缩导电条，其邻接柔性PCB的部分的上侧上的接触。 衬底通道限定一系列孔，打印头模块通过这些孔组供给不同颜色的油墨。 软管限定延伸一段长度的软管的平行通道，通道在一端连接到墨水容器，并在另一端用通道挤出盖密封。