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    Thermal ink jet printhead with increased drop generation rate
    2.
    发明授权
    Thermal ink jet printhead with increased drop generation rate 失效
    热喷墨打印头具有增加的液滴产生率

    公开(公告)号：US4835553A

    公开(公告)日：1989-05-30

    申请号：US236430

    申请日：1988-08-25

    Applicant: Peter A. Torpey ,  Ivan Rezanka ,  Narayan V. Deshpande ,  Donald J. Drake

    Inventor： Peter A. Torpey ,  Ivan Rezanka ,  Narayan V. Deshpande ,  Donald J. Drake

    IPC: B41J2/05 ,  B41J2/14

    CPC classification number: B41J2/1404 ,  B41J2002/14379

    Abstract: An improved ink jet printhead comprising upper and lower substrates that are mated and bonded together with a thick film insulative layer sandwiched therebetween. One surface of the upper substrate has etched therein one or more grooves and a recess which when mated with the lower substrate will serve as capillary filled ink channels and ink supply manifold, respectively. The grooves are open at one end and closed at the other. The open ends serve as nozzles. The manifold recess is adjacent the grooved closed ends. Each channel has a heating element located upstream of the nozzle. The heating elements are selectively addressable by input signals representing digitized data signals to produce ink vapor bubbles. The growth and collapse of the bubbles expel ink droplets from the nozzles and propel them to a recording medium. A recess patterned in the thick layer provides a flow path for the ink from the manifold to the channels by enabling the ink to flow around the closed ends of the channels and increase the flow area to the heating elements. Thus, the heating elements lie at the distal end of the recesses so that a vertical wall of elongated recess prevents air ingestion while it increases the ink channel flow area and increases refill time, resulting in an increase in bubble generation rate.

    Abstract translation: 一种改进的喷墨打印头，其包括上下基板，其与夹在其间的厚膜绝缘层配合并结合在一起。 上基板的一个表面在其中蚀刻有一个或多个凹槽和与下基板配合的凹槽，分别用作毛细管填充的墨水通道和墨水供应歧管。 槽在一端敞开，另一端封闭。 开口端作为喷嘴。 歧管凹槽与凹槽的封闭端相邻。 每个通道具有位于喷嘴上游的加热元件。 加热元件可以通过表示数字化数据信号的输入信号来选择寻址，以产生油墨蒸气泡。 气泡的生长和坍塌从喷嘴中排出墨滴并推动它们到记录介质上。 在厚层中图案化的凹槽通过使墨水能够围绕通道的封闭端流动并且增加到加热元件的流动面积而提供用于从歧管到通道的墨水的流动路径。 因此，加热元件位于凹部的远端，使得细长凹槽的垂直壁防止空气摄取，同时增加墨通道流动面积并增加再填充时间，导致气泡产生速率的增加。

    Bubble jet printing device with improved printhead heat control
    3.
    发明授权
    Bubble jet printing device with improved printhead heat control 失效
    喷墨打印设备，具有改进的打印头热控制

    公开(公告)号：US4831390A

    公开(公告)日：1989-05-16

    申请号：US144213

    申请日：1988-01-15

    Applicant: Narayan V. Deshpande ,  Dale R. Ims ,  Herman A. Hermanson ,  Gary A. Kneezel ,  Roger G. Markham

    Inventor： Narayan V. Deshpande ,  Dale R. Ims ,  Herman A. Hermanson ,  Gary A. Kneezel ,  Roger G. Markham

    IPC: B41J2/05 ,  B41J2/14

    CPC classification number: B41J2/1408

    Abstract: A bubble jet printing device is optimized for extended operation by preventing heat buildup within the printhead and ink supply. Several configurations provides for the addition of heat sinks of appropriate dimensions either directly to the printhead or to an electrode board bonded to the printhead. Plated holes through the electrode board increase heat flow away from the printhead. According to another aspect of the invention, the ink supply cartridge has thermally conductive particles dispersed therethrough to effectively increase its capacity to radiate heat away from the printhead.

    Abstract translation: 气泡喷墨打印装置通过防止打印头和墨水供应中的积聚而优化用于扩展操作。 几种配置提供了将适当尺寸的散热器直接添加到打印头或结合到打印头的电极板。 穿过电极板的电镀孔增加了远离打印头的热流。 根据本发明的另一方面，供墨盒具有分散在其中的导热颗粒，以有效地增加其从打印头辐射热量的能力。

    Ink jet printhead having a low cross talk ink channel structure
    6.
    发明授权
    Ink jet printhead having a low cross talk ink channel structure 失效
    具有低串扰油墨通道结构的喷墨打印头

    公开(公告)号：US06079819A

    公开(公告)日：2000-06-27

    申请号：US004640

    申请日：1998-01-08

    Applicant: Narayan V. Deshpande ,  John R. Andrews ,  Dale R. Ims

    Inventor： Narayan V. Deshpande ,  John R. Andrews ,  Dale R. Ims

    IPC: B41J2/14 ,  B41J2/16 ,  B41J2/05

    CPC classification number: B41J2/14129 ,  B41J2/1404 ,  B41J2/1604 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2/1632 ,  B41J2/1635 ,  B41J2/1642

    Abstract: An ink jet printhead is disclosed which has a heater plate containing the heating elements and driving circuitry means monolithographically formed on one surface thereof and the ink flow directing channel structure is formed on the heater plate using a layer of patternable polymeric material which, in one embodiment, is exposed using a mask to define the channel pattern then developed and cured. After curing, the patterned channel structure is polished to provide a smooth coplanar surface and a cover plate with an aperture therein is aligned and bonded to the channel structure to complete the printhead. The aperture serves as both ink inlet and a portion of the ink reservoir. The channels are open at one end and serve as the droplet ejecting nozzles, while the other ends are closed and extend beneath the cover plate aperture to provide a baffled portion of the ink reservoir and prevent cross-talk between the ink channels. In another embodiment, the channels ends opposite the nozzles open into a common recess with the channels walls extending therein to function as baffles and prevent cross-talk.

    Abstract translation: 公开了一种喷墨打印头，其具有包含加热元件的加热器板和在其一个表面上以光学方式形成的驱动电路装置，并且使用可图案化的聚合物材料层在加热器板上形成墨流动引导通道结构，在一个实施例中 ，使用掩模曝光以定义通道图案然后显影和固化。 在固化之后，对图案化的通道结构进行抛光以提供平滑的共面表面，并且其中具有孔的盖板对准并结合到通道结构以完成打印头。 该孔用作墨水入口和墨水储存器的一部分。 通道在一端开口并用作液滴喷嘴，而另一端封闭并延伸到盖板孔下方，以提供墨水容器的挡板部分并防止油墨通道之间的串扰。 在另一个实施例中，通道与喷嘴相对地开口，开口成共同的凹槽，通道壁延伸到其中，用作挡板并防止串扰。

    Ink jet printer having an efficient substrate heating and supporting assembly
    7.
    发明授权
    Ink jet printer having an efficient substrate heating and supporting assembly 失效
    具有有效的基板加热和支撑组件的喷墨打印机

    公开(公告)号：US6076921A

    公开(公告)日：2000-06-20

    申请号：US32922

    申请日：1998-03-02

    Applicant: Ivan Rezanka ,  Dale R. Ims ,  Narayan V. Deshpande

    Inventor： Ivan Rezanka ,  Dale R. Ims ,  Narayan V. Deshpande

    IPC: B41J2/01 ,  B41J11/04

    CPC classification number: B41J11/04

    Abstract: A thermal ink jet printer including a frame, a printhead mounted to the frame for printing ink images onto a heated and supported substrate, and an efficient substrate heating and supporting assembly mounted to the frame. The efficient substrate heating and supporting assembly includes a heating device, and a substrate supporting member having a front surface including a substrate supporting area for supporting substrates of various sizes one at a time and border areas having a polished finish. The efficient substrate heating and supporting assembly also includes a heat absorbing back surface facing the heating device. The heat absorbing back surface includes an increased heat absorbing area located opposite and centered relative to the substrate supporting area on the front surface. The increased heat absorbing area, relative to a rest of the back surface, has a coat of paint thereon for increasing heat absorption thereinto from the heating device, thereby resulting advantageously in relatively nonuniform heat absorption into the back surface, and relatively in more uniform, adequate and efficient substrate heating and drying temperatures on the front surface, when continuously running a most often run size of substrates.

    Abstract translation: 一种热喷墨打印机，包括框架，安装到框架上的用于将油墨图像印刷到加热和被支撑的基板上的打印头以及安装到框架上的有效的基板加热和支撑组件。 有效的基板加热和支撑组件包括加热装置和基板支撑构件，该基板支撑构件具有包括用于一次一个地支撑各种尺寸的基板的基板支撑区域的前表面和具有抛光光洁度的边界区域的前表面。 有效的衬底加热和支撑组件还包括面向加热装置的吸热后表面。 吸热后表面包括相对于前表面上的基板支撑区域相对并居中的增加的吸热区域。 增加的吸热面积相对于后表面的其余部分在其上具有涂层，用于增加从加热装置吸收的热量，从而有利地使相对不均匀的热吸收到背面中，并且相对更均匀， 足够和有效的基板加热和干燥温度在前表面，当连续运行最经常运行大小的基板。

    Thermal ink jet printhead with location control of bubble collapse
    8.
    发明授权
    Thermal ink jet printhead with location control of bubble collapse 失效
    热喷墨打印头具有气泡崩溃的位置控制

    公开(公告)号：US5041844A

    公开(公告)日：1991-08-20

    申请号：US548353

    申请日：1990-07-02

    Applicant: Narayan V. Deshpande

    Inventor： Narayan V. Deshpande

    IPC: B41J2/05 ,  B41J2/14

    CPC classification number: B41J2/1404 ,  B41J2002/14379 ,  B41J2202/11

    Abstract: A thermal ink jet printhead is disclosed having an ink channel geometry that controls the location of the bubble collapse on the heating elements. The ink channels provide the flow path between the printhead ink reservoir and the printhead nozzles. In one embodiment, the heating elements are located in a pit a predetermined distance upstream from the nozzle. The channel portion upstream from the heating element has a length and a cross-sectional flow area that is adjusted relative to the channel portion downstream from the heating element, so that the upstream and downstream portions of channel have substantially equal ink flow impedances. This results in controlling the location of the bubble collapse on the heating element to a location substantially in the center of the heating elements.

    Thermal ink jet printhead with improved heating elements
    9.
    发明授权
    Thermal ink jet printhead with improved heating elements 失效
    热喷墨打印头具有改进的加热元件

    公开(公告)号：US4947193A

    公开(公告)日：1990-08-07

    申请号：US346056

    申请日：1989-05-01

    Applicant: Narayan V. Deshpande

    Inventor： Narayan V. Deshpande

    IPC: B41J2/05 ,  B41J2/14 ,  G01D15/18

    CPC classification number: B41J2/14129 ,  B41J2002/14379

    Abstract: An improved thermal ink jet printhead has a plurality of heating elements in ink channels selectively addressable by electrical signals to eject ink droplets from nozzles located at one end of the ink channels on demand. The heating elements each have a passivated layer of resistive material that has non-uniform sheet resistance in a direction transverse to the direction of ink in the channels. The non-uniform sheet resistance provides a substantially uniform temperature across the width of the resistive layer, so that the power required to eject a droplet is reduced and the droplet size dependence on electrical signal energy is eliminated.

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