Reliable high performance drop generator for an inkjet printhead
    11.
    发明授权
    Reliable high performance drop generator for an inkjet printhead 失效
    用于喷墨打印头的可靠的高性能液滴发生器

    公开(公告)号:US5946012A

    公开(公告)日:1999-08-31

    申请号:US90968

    申请日:1998-06-04

    IPC分类号: B41J2/05 B41J2/14 B41J2/16

    摘要: An inkjet drop ejection system comprises a combination of printhead components and ink, mutually tuned to maximize operating characteristics of the printhead and print quality and dry time of the ink. Use of a short shelf (distance from ink source to ink firing element), on the order of 55 microns, provides a very high speed refill. However, it is a characteristic of high speed refill that it has a tendency for being over-damped. To provide the requisite damping, the ink should have a viscosity greater than about 2 cp. In this way, the ink and architecture work together to provide a tuned system that enables stable operation at high frequencies. One advantage of the combination of a pigment and a dispersant in the ink is the resultant higher viscosity provided. The high speed would be of little value if the ink did not have a fast enough rate of drying. This is accomplished by the addition of alcohols or alcohol(s) and surfactant(s) to the ink. Fast dry times are achieved with a combination of alcohols, such as iso-propyl alcohol with a 4 or 5 carbon alcohol or with iso-propyl alcohol plus surfactant(s). One preferred embodiment of a short shelf (90 to 130 microns), ink viscosity of about 3 cp, and surface tension of about 54 provides a high speed drop generator capable of operating at about 12 KHz. Reducing the shelf length to about 55 microns, in combination with rotating the substrate at an angle to the scan direction, permits maximum drop generator operation as high as about 20 KHz. As a consequence of employing pigment-based inks, high optical densities are realized, along with excellent permanence (no fade and better waterfastness), and good stability. The combination of preferred ink and pen architecture provides good drop generator stability.

    摘要翻译: 喷墨墨滴喷射系统包括打印头部件和油墨的组合,其相互调节以最大化打印头的操作特性以及油墨的打印质量和干燥时间。 使用大约55微米的短搁架(墨水源到墨水喷射元件的距离)提供了非常高的速度补充。 然而,高速补充的特征是它具有过度阻尼的倾向。 为了提供必要的阻尼,油墨的粘度应大于约2cp。 以这种方式,墨水和结构共同工作,提供了一个可在高频下稳定运行的调谐系统。 油墨中颜料和分散剂的组合的一个优点是得到较高的粘度。 如果墨水没有足够的干燥速度,高速度就没有什么价值。 这通过向油墨中加入醇或醇和表面活性剂来实现。 快速干燥时间是通过醇,如异丙醇与4或5碳醇或与异丙醇加表面活性剂的组合来实现的。 短架(90-130微米),油墨粘度约为3cp,表面张力约为54的一个优选实施例提供了能够在约12KHz下操作的高速液滴发生器。 将搁板长度减小至约55微米,与基板以扫描方向成一定角度的旋转结合使得最大的液滴发生器运转高达约20KHz。 作为使用颜料基油墨的结果,实现了高的光密度,以及优异的耐久性(不褪色和更好的耐水性)和良好的稳定性。 优选的墨水和笔结构的组合提供了良好的液滴发生器稳定性。

    Ink channel structure for inkjet printhead
    12.
    发明授权
    Ink channel structure for inkjet printhead 失效
    喷墨打印头的墨水通道结构

    公开(公告)号:US5594481A

    公开(公告)日:1997-01-14

    申请号:US319893

    申请日:1994-10-06

    摘要: Disclosed is an inkjet print cartridge including an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber along a top surface of said substrate and having a first outer edge along a periphery of substrate; the first outer edge being in close proximity to the ink firing chambers. The ink firing chambers are arranged in a first chamber array and a second chamber array and with the firing chambers spaced so as to provide 600 dots per inch printing. An ink channel connects the reservoir with the ink firing chambers, the channel including a primary channel connected at a first end with the reservoir and at a second end to a secondary channel; the primary channel allowing ink to flow from the ink reservoir, around the first outer edge of the substrate to the secondary channel along the top surface of the substrate so as to be proximate to the ink firing chambers. A separate inlet passage defined by a barrier layer for each firing chamber connecting the secondary channel with the firing chamber for allowing high frequency refill of the firing chamber. The separate inlet passage for each firing chamber having peninsulas and pinch points formed in the barrier layer to prevent cross-talk and overshoot during high frequency operation. A group of the firing chambers in adjacent relationship forming a primitive in which only one firing chamber in said primitive is activated at a time. A first circuit on said substrate connect to the firing elements and a second circuit on the cartridge connect to the first circuit, for transmitting firing signals to the ink firing elements at a frequency greater than 9 kHz. The preferred configuration of the nozzle member, ink channels, and vaporization chambers allows a printing resolution of 600 dpi and a firing rate of greater than 9 kHz.

    摘要翻译: 公开了一种包括墨水储存器的喷墨打印墨盒; 基板,具有多个单独的油墨喷射室,沿着所述基板的顶表面在每个室中具有油墨点火元件,并具有沿着基板周边的第一外边缘; 第一外边缘靠近墨喷射室。 喷墨室布置在第一室阵列和第二室阵列中,并且喷射室间隔开以提供每英寸打印600点。 墨水通道将储存器连接到喷墨室,该通道包括在第一端与储存器连接的第一通道,在第二端连接到次级通道; 主要通道允许墨水从墨水储存器沿着基板的顶表面围绕基板的第一外边缘流动到第二通道,以便靠近墨水喷射室。 一个单独的入口通道,由阻挡层限定,用于每个点火室,将次级通道与燃烧室连接,以允许高频率再充填燃烧室。 每个喷射室的独立入口通道具有形成在阻挡层中的半岛和夹点,以防止高频操作期间的串扰和过冲。 一组相邻关系中的发射室形成一个原始图案,其中一次只激活所述图元中的一个发射室。 所述衬底上的第一电路连接到点火元件,并且盒上的第二电路连接到第一电路,用于以大于9kHz的频率将点火信号发送到喷墨元件。 喷嘴构件,墨水通道和蒸发室的优选构造允许600dpi的打印分辨率和大于9kHz的点火速率。

    Priming apparatus and process for multi-color ink-jet pens
    14.
    发明授权
    Priming apparatus and process for multi-color ink-jet pens 失效
    多色墨水笔的配套设备及工艺

    公开(公告)号:US5185614A

    公开(公告)日:1993-02-09

    申请号:US686740

    申请日:1991-04-17

    IPC分类号: B41J2/21 B41J2/165 B41J2/175

    摘要: Multi-color ink-jet pens having an orifice set associated with each color are primed by an apparatus that avoids mixing of two colors during priming. A resilient seal forms a chamber that encloses the orifice sets. The chamber is connected to a vacuum source to reduce the pressure in the chamber for drawing ink out of the orifices. A set of suction tubes connects to the vacuum source, with each tube terminating within the chamber in closely spaced relation with a corresponding orifice set for drawing excess ink away from the orifice set, thereby preventing the various colors of primed ink from mixing.

    Inkjet printing system with high drop-weight yellow
    15.
    发明授权
    Inkjet printing system with high drop-weight yellow 有权
    喷墨打印系统具有高降色黄色

    公开(公告)号:US07396109B2

    公开(公告)日:2008-07-08

    申请号:US11261866

    申请日:2005-10-28

    IPC分类号: B41J2/21 B41J2/175

    摘要: Disclosed are printing systems and printhead assemblies in which yellow print nozzles are paired on a die with black print nozzles, with cyan and magenta print nozzles on a separate die. The pairing of yellow and black nozzles reduces constraints imposed by the printhead architecture and manufacturing processes.

    摘要翻译: 公开了打印系统和打印头组件,其中黄色打印喷嘴在具有黑色打印喷嘴的模具上配对,在单独的模具上具有青色和品红色打印喷嘴。 黄色和黑色喷嘴的配对减少了打印头架构和制造过程的限制。

    Counter-boring techniques for improved ink-jet printheads
    19.
    发明授权
    Counter-boring techniques for improved ink-jet printheads 有权
    改进喷墨打印头的反渗透技术

    公开(公告)号:US06527370B1

    公开(公告)日:2003-03-04

    申请号:US09603868

    申请日:2000-06-26

    IPC分类号: B41J216

    摘要: Novel designs and methods of manufacture of ink-jet printheads capable of providing ink-droplet-tail-break-off control and preventing meniscus overshoot in order to overcome the puddling, pen directionality, and ruffle problems associated with thermal-ink-jet printing are disclosed. A printhead for use in an ink-delivery system includes a substrate that has at least one ink ejector thereon. An orifice-plate member is positioned over and above the substrate. The orifice-plate member has at least one ink-transfer bore extending therethrough. The orifice-plate member further includes: a top surface that defines a top opening for the ink-transfer bore, a bottom surface that defines a bottom opening for the ink-transfer bore, and a counter-bore in the top surface that is in fluid communication with the ink-transfer bore. The counter-bore can be: concentric or non-concentric with the ink-transfer bore, a full or partial counter-bore, and symmetric or asymmetric. In addition, the counter-bore can also be deep enough to hold the ink meniscus. Lastly, the counter-bore can smooth, round and/or provide a more uniform edge around the ink-transfer bore. By providing one or more combinations of these features, the present invention is able to control the tail break-off of expelled ink-jet droplets and/or minimize meniscus overflow.

    摘要翻译: 为了克服与热喷墨打印相关的搅拌,笔方向性和褶边问题,喷墨打印头的新型设计和制造方法能够提供墨滴断开控制和防止弯液面过冲, 披露 用于墨水输送系统的打印头包括在其上具有至少一个墨水喷射器的基底。 孔板构件位于衬底上方和上方。 孔板构件具有延伸穿过其中的至少一个油墨传送孔。 孔板构件还包括:限定用于油墨传送孔的顶部开口的顶部表面,限定用于油墨传送孔的底部开口的底部表面,以及顶部表面中的反向孔 与油墨传送孔流体连通。 反孔可以是:与油墨传送孔同心或不同心,全或部分反孔,对称或不对称。 此外,反孔也可以足够深以容纳油墨弯液面。 最后,反孔可以平滑,圆形和/或在墨水输送孔周围提供更均匀的边缘。 通过提供这些特征的一个或多个组合,本发明能够控制排出的喷墨液滴的尾部断裂和/或使弯液面溢出最小化。

    Continuous refill of spring bag reservoir in an ink-jet swath printer/plotter
    20.
    发明授权
    Continuous refill of spring bag reservoir in an ink-jet swath printer/plotter 失效
    在喷墨条纹打印机/绘图仪中连续重新填充弹簧袋储存器

    公开(公告)号:US06341853B1

    公开(公告)日:2002-01-29

    申请号:US09067659

    申请日:1998-04-28

    IPC分类号: B41J2175

    摘要: A closed ink replenishment system for replenishing the supply of ink in negative pressure spring-bag reservoirs in a printer/plotter. A tube runs between each cartridge reservoir and an auxiliary reservoir mounted to the printer/plotter frame to form the closed ink system. As ink is depleted from the spring-bag reservoir during printing operation, the negative pressure in the cartridge increases, drawing ink through the tube from the auxiliary reservoir into the cartridge until the negative pressure decreases to an equilibrium point. As a result, the volume of ink within the spring-bag reservoir remains substantially constant so long as there is ink remaining within the auxiliary reservoir. This maintains the print quality. The auxiliary reservoir is a flat bag mounted on a spring-biased platform, which acts as a height regulating system. As ink is depleted from the auxiliary bag, the height of the platform and bag increases to maintain a constant pressure and elevation head at the spring-bag reservoir.

    摘要翻译: 一种封闭的墨水补充系统,用于补充打印机/绘图仪中的负压弹簧袋储存器中的墨水供应。 管在每个墨盒储存器和安装到打印机/绘图仪框架的辅助储存器之间运行以形成封闭的墨水系统。 当打印操作期间墨水从墨袋储存器中耗尽时,墨盒中的负压增加,墨水通过管从辅助储存器吸入墨盒中,直到负压降至平衡点。 结果,弹簧袋储存器内的墨水体积保持基本上恒定,只要在辅助储存器内剩余墨水即可。 这保持了打印质量。 辅助储存器是安装在弹簧偏置平台上的扁平袋,其作为高度调节系统。 当墨水从辅助袋中耗尽时,平台和袋子的高度增加,以在弹簧袋储存器处保持恒定的压力和升高头部。