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    Inkjet printhead for printing with low density keep-wet dots
    11.
    发明申请
    Inkjet printhead for printing with low density keep-wet dots 有权
    喷墨打印头用于打印低密度保湿点

    公开(公告)号：US20060221107A1

    公开(公告)日：2006-10-05

    申请号：US11097335

    申请日：2005-04-04

    申请人： Kia Silverbrook ,  Simon Walmsley ,  Angus North ,  Gregory McAvoy

    发明人： Kia Silverbrook ,  Simon Walmsley ,  Angus North ,  Gregory McAvoy

    IPC分类号： B41J29/38 ,  B41J2/05

    CPC分类号： B41J2/1628 ,  B41J2/1404 ,  B41J2/1412 ,  B41J2/1603 ,  B41J2/1631 ,  B41J2/1642 ,  B41J2002/1437 ,  B41J2002/14475 ,  B41J2002/14491 ,  B41J2202/20

    摘要： An inkjet printhead with a plurality of nozzles, a bubble forming chamber corresponding to each of the nozzles respectively, the bubble forming chambers adapted to contain ejectable liquid, a heater element positioned in each of the bubble forming chambers respectively for heating the ejectable liquid to form a gas bubble that causes the ejection of a drop of the ejectable liquid from the nozzle; and, a print engine controller for controlling the operation of the heater elements; wherein during use, the print engine controller heats the ejectable liquid with the heater element to lower its viscosity prior to a print job; and during printing, the print engine controller ensures that the time interval between successive actuations of each of the heater elements is less than a predetermined time in which the viscosity of the ejectable liquid in the increases to a threshold.

    摘要翻译： 具有多个喷嘴的喷墨打印头，分别对应于每个喷嘴的气泡形成室，适于容纳可喷射液体的气泡形成室，分别定位在每个气泡形成室中的加热器元件，用于加热可喷射液体以形成 导致从喷嘴喷出可滴出液体的液滴的气泡; 以及用于控制加热器元件的操作的打印引擎控制器; 其中在使用期间，所述打印引擎控制器利用所述加热器元件加热所述可喷射液体以在打印作业之前降低其粘度; 并且在打印期间，打印引擎控制器确保每个加热器元件的连续致动之间的时间间隔小于其中可喷射液体的粘度增加到阈值的预定时间。

    High efficiency thermal ink jet printhead
    12.
    发明申请
    High efficiency thermal ink jet printhead 有权
    高效热喷墨打印头

    公开(公告)号：US20060055736A1

    公开(公告)日：2006-03-16

    申请号：US10534813

    申请日：2003-11-17

    申请人： Kia Silverbrook ,  Angus North ,  Gregory McAvoy

    发明人： Kia Silverbrook ,  Angus North ,  Gregory McAvoy

    IPC分类号： B41J2/05

    CPC分类号： B41J2/1628 ,  B41J2/1404 ,  B41J2/14072 ,  B41J2/1412 ,  B41J2/1433 ,  B41J2/1601 ,  B41J2/1603 ,  B41J2/1623 ,  B41J2/1631 ,  B41J2/1639 ,  B41J2/1642 ,  B41J2002/14475 ,  B41J2002/14491 ,  B41J2202/03 ,  B41J2202/11 ,  B41J2202/19 ,  B41J2202/20

    摘要： There is disclosed an inkjet printhead which comprises a plurality of nozzles (3) and one or more heater elements (10) corresponding to each nozzle (3). Each heater element is configured to heat a bubble forming liquid in the printhead to a temperature above its boiling point to form a gas bubble (12) therein. The generation of the bubble causes the ejection of a drop of an ejectable liquid (such as ink) through the respective corresponding nozzle, to effect printing. Each heater element is configured such that an actuation energy of less than 500 nanojoules (nJ) is required to be applied to that element to heat it sufficiently to form such a bubble (12) in the bubble forming liquid (which liquid can also be the ink). This configuration thus provides for a high efficiency printhead.

    摘要翻译： 公开了一种喷墨打印头，其包括多个喷嘴（3）和对应于每个喷嘴（3）的一个或多个加热元件（10）。 每个加热器元件构造成将打印头中的形成泡沫的液体加热至高于其沸点的温度，以在其中形成气泡（12）。 气泡的产生导致通过相应的喷嘴喷射一滴可喷射液体（例如油墨），以进行打印。 每个加热器元件被构造成使得要小于500纳克（nJ）的致动能量被施加到该元件上以将其充分加热以在气泡形成液体中形成这样的气泡（该液体也可以是 墨水）。 因此，该配置提供了高效率的打印头。

    Ink jet printhead with conformally coated heater
    13.
    发明申请
    Ink jet printhead with conformally coated heater 有权
    具有保形涂层加热器的喷墨打印头

    公开(公告)号：US20060012642A1

    公开(公告)日：2006-01-19

    申请号：US10534803

    申请日：2003-11-17

    申请人： Kia Silverbrook ,  Angus North

    发明人： Kia Silverbrook ,  Angus North

    IPC分类号： B41J2/05

    CPC分类号： B41J2/1601 ,  B41J2/1404 ,  B41J2/1412 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2/1631 ,  B41J2/1639 ,  B41J2/1642 ,  B41J2002/14491 ,  B41J2202/19 ,  B41J2202/20

    摘要： There is disclosed an ink jet printhead which comprises a plurality of nozzles (3) and one or more heater elements (10) corresponding to each nozzle (3). Each heater element is configured to heat a bubble forming liquid in the printhead to a temperature above its boiling point to form a gas bubble (12) therein. The generation of the bubble causes the ejection of a drop of an ejectable liquid (such as ink) though the respective corresponding nozzle, to effect printing. Each heater element is substantially covered by a conformal protective coating (77) which has been applied to all sides of the heater element (10) simultaneously so that the coating is seamless.

    摘要翻译： 公开了一种喷墨打印头，其包括多个喷嘴（3）和对应于每个喷嘴（3）的一个或多个加热器元件（10）。 每个加热器元件构造成将打印头中的形成泡沫的液体加热至高于其沸点的温度，以在其中形成气泡（12）。 气泡的产生导致通过相应的喷嘴排出可喷射液体（例如油墨）的一滴，以实现打印。 每个加热器元件基本上被共形保护涂层（77）覆盖，该保护涂层同时施加到加热器元件（10）的所有侧面，使得涂层是无缝的。

    Printhead integrated circuit having heater elements with high surface area
    17.
    发明申请
    Printhead integrated circuit having heater elements with high surface area 失效
    打印头集成电路具有高表面积的加热元件

    公开(公告)号：US20060007267A1

    公开(公告)日：2006-01-12

    申请号：US11132375

    申请日：2005-05-19

    申请人： Kia Silverbrook ,  Angus North ,  Gregory McAvoy

    发明人： Kia Silverbrook ,  Angus North ,  Gregory McAvoy

    IPC分类号： B41J2/04

    CPC分类号： B41J2/1629 ,  B41J2/1412 ,  B41J2/1603 ,  B41J2/1628 ,  B41J2/1631 ,  B41J2/1642 ,  B41J2/1646 ,  B41J2002/14475 ,  B41J2002/14491 ,  B41J2202/20

    摘要： There is disclosed an inkjet printhead integrated which comprises drive circuitry, a plurality of nozzles and one or more heater elements corresponding to each nozzle. Each heater element is configured to heat a bubble forming liquid in the printhead to a temperature above its boiling point to form a gas bubble therein. The generation of the bubble causes the ejection of a drop of an ejectable liquid (such as ink) through respective corresponding nozzle, to effect printing. Each heater element has a surface area to volume ratio greater than 4:1. This configuration ensures that heat is quickly transferred from the elements to the ink for efficient operation and minimal heating of the printhead substrate.

    摘要翻译： 公开了一种集成了喷墨打印头，其包括驱动电路，多个喷嘴和对应于每个喷嘴的一个或多个加热元件。 每个加热器元件构造成将打印头中的起泡液体加热至高于其沸点的温度，以在其中形成气泡。 气泡的产生导致通过相应的喷嘴喷射一滴可喷射液体（例如油墨），以进行打印。 每个加热器元件的表面积与体积比大于4:1。 这种配置确保了热量从元件快速转移到油墨以有效地操作和最小化打印头基板的加热。

    Inkjet Printhead That Prints Keep-Wet Dots To Avoid Clogging
    18.
    发明申请
    Inkjet Printhead That Prints Keep-Wet Dots To Avoid Clogging 有权
    喷墨打印头可以保持湿点以避免堵塞

    公开(公告)号：US20070242095A1

    公开(公告)日：2007-10-18

    申请号：US11764806

    申请日：2007-06-19

    申请人： Kia Silverbrook ,  Simon Walmsley ,  Angus North ,  Gregory McAvoy

    发明人： Kia Silverbrook ,  Simon Walmsley ,  Angus North ,  Gregory McAvoy

    IPC分类号： B41J29/38

    CPC分类号： B41J2/1628 ,  B41J2/1404 ,  B41J2/1412 ,  B41J2/1603 ,  B41J2/1631 ,  B41J2/1642 ,  B41J2002/1437 ,  B41J2002/14475 ,  B41J2002/14491 ,  B41J2202/20

    摘要： An inkjet printhead with a plurality of nozzles, a heater element adjacent each of the nozzles respectively for heating an ejectable liquid to form a gas bubble that causes the ejection of a drop of the ejectable liquid from the nozzle, and, a print engine controller for controlling the operation of the heater elements. During use, the print engine controller ensures that the time interval between successive actuations of each of the heater elements is less than a predetermined time in which the viscosity of the ejectable liquid in the increases to a threshold, known as the decap time.

    摘要翻译： 一种具有多个喷嘴的喷墨打印头，分别邻近每个喷嘴的加热器元件，用于加热可喷射液体以形成导致从喷嘴喷出可滴出液体的液滴的气泡;以及打印引擎控制器， 控制加热器元件的操作。 在使用期间，打印引擎控制器确保每个加热器元件的连续致动之间的时间间隔小于其中可喷射液体的粘度增加到阈值的预定时间，称为开启时间。

    Inkjet nozzle with reduced fluid inertia and viscous drag
    19.
    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
    20.
    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。