公开(公告)号：US07967419B2

公开(公告)日：2011-06-28

申请号：US12627960

申请日：2009-11-30

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： B41J2/04

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： An inkjet printhead comprises a plurality of nozzles; a supply of printing fluid in fluid communication with the plurality of nozzles; and a plurality of heater elements corresponding respectively to each of the nozzles, the heater elements for heating the printing fluid to form a gas bubble for ejecting a drop of printing fluid of a predetermined volume from the nozzle. Each of the heater elements has an area proportional to the predetermined volume. The area being such that an amount of energy generated by each heater element to form the gas bubble is substantially equal to or less than an amount of energy absorbable by a drop of printing fluid having the predetermined volume.

摘要翻译： 喷墨打印头包括多个喷嘴; 提供与多个喷嘴流体连通的打印流体; 以及分别对应于每个喷嘴的多个加热器元件，用于加热打印流体的加热器元件，以形成用于从喷嘴喷射预定体积的一滴印刷流体的气泡。 每个加热器元件具有与预定体积成比例的面积。 该区域使得由每个加热器元件产生的用于形成气泡的能量的量基本上等于或小于由具有预定体积的一滴印刷液体吸收的能量的量。

公开(公告)号：US20100073432A1

公开(公告)日：2010-03-25

申请号：US12627960

申请日：2009-11-30

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 ,  B41J2/1412 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2/1639 ,  B41J2/1642 ,  B41J11/0095 ,  B41J13/103 ,  B41J2002/14475 ,  B41J2002/14491 ,  B41J2202/20

摘要： An inkjet printhead comprises a plurality of nozzles; a supply of printing fluid in fluid communication with the plurality of nozzles; and a plurality of heater elements corresponding respectively to each of the nozzles, the heater elements for heating the printing fluid to form a gas bubble for ejecting a drop of printing fluid of a predetermined volume from the nozzle. Each of the heater elements has an area proportional to the predetermined volume. The area being such that an amount of energy generated by each heater element to form the gas bubble is substantially equal to or less than an amount of energy absorbable by a drop of printing fluid having the predetermined volume.

摘要翻译： 喷墨打印头包括多个喷嘴; 提供与多个喷嘴流体连通的打印流体; 以及分别对应于每个喷嘴的多个加热器元件，用于加热打印流体的加热器元件，以形成用于从喷嘴喷射预定体积的一滴印刷流体的气泡。 每个加热器元件具有与预定体积成比例的面积。 该区域使得由每个加热器元件产生的用于形成气泡的能量的量基本上等于或小于由具有预定体积的一滴印刷液体吸收的能量的量。

公开(公告)号：US20090002459A1

公开(公告)日：2009-01-01

申请号：US11782595

申请日：2007-07-24

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 ,  B41J2/1412 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2/1639 ,  B41J2/1642 ,  B41J11/0095 ,  B41J13/103 ,  B41J2002/14475 ,  B41J2002/14491 ,  B41J2202/20

摘要： A inkjet printhead with heater elements adjacent an array of respective nozzles 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： 一种喷墨打印头，其具有与相应喷嘴阵列相邻的加热器元件，用于加热水性印刷流体以形成用于从喷嘴喷出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。

公开(公告)号：US07448729B2

公开(公告)日：2008-11-11

申请号：US11097309

申请日：2005-04-04

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 ,  B41J29/38

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 thermal inkjet printhead with a heater element disposed in each of the bubble forming chambers wherein, the heater element has a protective surface coating that is less than 0.1 μm thick while still being capable of ejecting more than 1 billion drops without failure. Removing most or all of the protective coatings from the heater reduces or eliminates the thermal insulation between the heater and the ink. Nucleating a bubble in the ink chamber requires a much shorter pulse of less energy thereby improving printhead efficiency.

摘要翻译： 一种具有设置在每个气泡形成室中的加热器元件的热喷墨打印头，其中，加热器元件具有小于0.1μm厚的保护性表面涂层，同时仍然能够在不发生故障的情况下喷射超过10亿滴。 从加热器中去除大部分或全部保护涂层可减少或消除加热器和墨水之间的热绝缘。 在墨水室中成核泡沫需要更短的脉冲，从而提高打印头的效率。

公开(公告)号：US07334876B2

公开(公告)日：2008-02-26

申请号：US11097212

申请日：2005-04-04

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： B41J2/04

CPC分类号： B41J2/14427 ,  B41J2/1412 ,  B41J2/1603 ,  B41J2/1626 ,  B41J2/1628 ,  B41J2/1631 ,  B41J2/1635 ,  B41J2/1639 ,  B41J2/1642 ,  B41J2/1648 ,  B41J2002/1437 ,  B41J2002/14491 ,  B41J2202/20

摘要： A thermal inkjet printhead with generally planar heater elements disposed in respective bubble forming chambers, whereby the area of each heater is less than 300 μm2. The heater area influences the energy required to heat the heater volume up to the fluid superheat limit; the energy required to heat the protective coatings covering the heater to the superheat limit; the heat that diffuses into the underlayer prior to bubble nucleation; and, the heat that diffuses into the ink prior to bubble nucleation. Reducing the surface area of the heater reduces all of these terms and has a significant impact on the energy required to form a bubble and eject ink.

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大致平面的加热器元件，由此每个加热器的面积小于300μm2。 加热器区域影响将加热器体积加热到流体过热极限所需的能量; 将覆盖加热器的保护涂层加热至过热极限所需的能量; 在气泡成核之前扩散到底层的热量; 以及在气泡成核之前扩散到油墨中的热量。 减少加热器的表面积减少了所有这些术语，并且对形成气泡和喷射墨水所需的能量具有显着的影响。

公开(公告)号：US08342657B2

公开(公告)日：2013-01-01

申请号：US12711264

申请日：2010-02-24

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： An inkjet nozzle assembly has a chamber with a nozzle opening for ejecting a liquid, a heater element disposed in the chamber, and a dielectric layer sandwiched between the heater element and a wall of the chamber. The dielectric layer has a thermal product of less than 1495 Jm−2K−1s−1/2. The thermal product is defined as (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： 喷墨喷嘴组件具有：具有用于喷射液体的喷嘴开口的腔室，设置在腔室中的加热器元件以及夹在加热器元件和腔室壁之间的电介质层。 电介质层具有小于1495Jm-2K-1s-1/2的热产物。 热产品定义为（＆rgr; Ck）1/2，其中＆rgr; 是层的密度，C是层的比热，k是层的热导率。

公开(公告)号：US20100149279A1

公开(公告)日：2010-06-17

申请号：US12711264

申请日：2010-02-24

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： An inkjet nozzle assembly has a chamber with a nozzle opening for ejecting a liquid, a heater element disposed in the chamber, and a dielectric layer sandwiched between the heater element and a wall of the chamber. The dielectric layer has a thermal product of less than 1495 Jm−2K−1s−1/2. The thermal product is defined as (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： 喷墨喷嘴组件具有：具有用于喷射液体的喷嘴开口的腔室，设置在腔室中的加热器元件以及夹在加热器元件和腔室壁之间的电介质层。 电介质层具有小于1495Jm-2K-1s-1/2的热产物。 热产品定义为（＆rgr; Ck）1/2，其中＆rgr; 是层的密度，C是层的比热，k是层的热导率。

公开(公告)号：US07637593B2

公开(公告)日：2009-12-29

申请号：US11782595

申请日：2007-07-24

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： B41J2/14 ,  B41J2/16

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 inkjet printhead with heater elements adjacent an array of respective nozzles 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： 一种喷墨打印头，其具有与相应喷嘴阵列相邻的加热器元件，用于加热水性印刷流体以形成用于从喷嘴喷出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。

公开(公告)号：US07147306B2

公开(公告)日：2006-12-12

申请号：US11212637

申请日：2005-08-29

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 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。

公开(公告)号：US20100103216A1

公开(公告)日：2010-04-29

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： B41J29/38

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。