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    Dual drop printing mode using full length waveforms to achieve head drop mass differences
    1.
    发明授权
    Dual drop printing mode using full length waveforms to achieve head drop mass differences 有权
    双滴打印模式使用全长波形实现喷头质量差异

    公开(公告)号：US07588305B2

    公开(公告)日：2009-09-15

    申请号：US11139700

    申请日：2005-05-31

    申请人： David L. Knierim ,  Trevor J. Snyder ,  Joel Chan

    发明人： David L. Knierim ,  Trevor J. Snyder ,  Joel Chan

    IPC分类号： B41J29/38

    CPC分类号： B41J2/2121

    摘要： A dual-drop mode for a printer uses at least two full length waveforms and switches between the waveforms according to one or more patterning methodologies to print a page length document having a dual drop size print pattern across the printed portion of the page. This achieves printing from individual jet nozzles of either a large drop or a small drop. The page size patterning methodology is performed globally on at least a sub-page basis, rather than on a pixel-by-pixel basis and may be performed based on or independent of specific image data.

    摘要翻译： 用于打印机的双插入模式使用根据一种或多种图案化方法的波形之间的至少两个全长波形和开关，以在页面的打印部分上打印具有双墨滴尺寸打印图案的页长度文档。 这实现了从大滴或小滴的各个喷嘴喷嘴。 页面尺寸图案化方法在至少以子页为基础而不是逐个像素的基础上全局执行，并且可以基于特定图像数据或独立于特定图像数据来执行。

    Dual drop printing mode using full length waveforms to achieve head drop mass differences
    2.
    发明授权
    Dual drop printing mode using full length waveforms to achieve head drop mass differences 有权
    双滴打印模式使用全长波形实现喷头质量差异

    公开(公告)号：US07575293B2

    公开(公告)日：2009-08-18

    申请号：US11139549

    申请日：2005-05-31

    申请人： Trevor J. Snyder ,  David L. Knierim ,  Joel Chan

    发明人： Trevor J. Snyder ,  David L. Knierim ,  Joel Chan

    IPC分类号： B41J29/38

    CPC分类号： B41J2/2054 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593

    摘要： A dual-drop mode for a printer uses at least two full length waveforms and switches between the waveforms according to one or more patterning methodologies to print a page length document having a dual drop size print pattern across the printed portion of the page. This achieves printing from individual jet nozzles of either a large drop or a small drop. The page size patterning methodology is performed globally on at least a sub-page basis, rather than on a pixel-by-pixel basis and may be performed based on or independent of specific image data. In exemplary embodiments, printing is achieved using multiple print passes, with at least two print passes using different sized ink droplets.

    摘要翻译： 用于打印机的双插入模式使用根据一种或多种图案化方法的波形之间的至少两个全长波形和开关，以在页面的打印部分上打印具有双墨滴尺寸打印图案的页长度文档。 这实现了从大滴或小滴的各个喷嘴喷嘴。 页面尺寸图案化方法在至少以子页为基础而不是逐个像素的基础上全局执行，并且可以基于特定图像数据或独立于特定图像数据来执行。 在示例性实施例中，使用多个打印通道实现打印，其中至少两个打印通道使用不同尺寸的墨滴。

    System and method for measuring a supply of solid ink in a solid ink printer
    8.
    发明授权
    System and method for measuring a supply of solid ink in a solid ink printer 有权

    公开(公告)号：US08550609B2

    公开(公告)日：2013-10-08

    申请号：US11986505

    申请日：2007-11-21

    申请人： David L. Knierim ,  Ernest Isreal Esplin ,  Michael Alan Fairchild

    发明人： David L. Knierim ,  Ernest Isreal Esplin ,  Michael Alan Fairchild

    IPC分类号： B41J2/175

    CPC分类号： B41J2/17593 ,  B41J2002/17579

    摘要： A solid ink printer includes a solid ink measurement system that helps ensure an adequate supply of solid ink is in the feed channels delivering solid ink to a melting device within a printer. The solid ink measurement system includes a driving electrode mounted along a substantial length of a first structure of a first solid ink feed channel, a sensing electrode mounted along a substantial length of a second structure of the first solid ink feed channel, the sensing electrode being opposite and generally parallel to the driving electrode, an AC voltage source coupled to the driving electrode to generate an electrical field emitted from the driving electrode, and a capacitance measurement circuit coupled to the sensing electrode to receive an electrical signal induced in the sensing electrode by the electrical field generated by the driving electrode, the capacitance measurement circuit being configured to identify an amount of solid ink in the first feed channel that corresponds to the electrical signal received from the sensing electrode.

    Fluid level sensing system and method
    9.
    发明授权
    Fluid level sensing system and method 有权
    液位传感系统及方法

    公开(公告)号：US08382221B2

    公开(公告)日：2013-02-26

    申请号：US12164714

    申请日：2008-06-30

    申请人： Isaac S. Frazier ,  David L. Knierim ,  James Michael Bonicatto ,  Michael E. Norkitis

    发明人： Isaac S. Frazier ,  David L. Knierim ,  James Michael Bonicatto ,  Michael E. Norkitis

    IPC分类号： B41J2/195 ,  B41J29/393

    CPC分类号： B41J2/17566 ,  B41J2002/17579

    摘要： An ink level sensing system that exhibits good sensitivity is described herein. The system includes a first probe having a first active surface, a second probe having a second active surface facing the first active surface, a memory in which data indicative of a conductivity curve and command instructions are stored, and a processor configured to execute the command instructions to associate a level of fluid in a reservoir with a first signal indicative of the electrical coupling between the first active surface and the second active surface with reference to the data indicative of a conductivity curve.

    摘要翻译： 本文描述了具有良好灵敏度的油墨液位检测系统。 该系统包括具有第一有源表面的第一探针，具有面向第一有源表面的第二有源表面的第二探针，其中存储指示电导率曲线和命令指令的数据的存储器，以及被配置为执行命令的处理器 参考指示电导率曲线的数据，将贮存器中的液体水平与指示第一活性表面和第二活性表面之间的电耦合的第一信号相关联的指令。

    Body diode forward conduction prevention
    10.
    发明授权
    Body diode forward conduction prevention 有权
    体二极管正向传导预防

    公开(公告)号：US08356869B2

    公开(公告)日：2013-01-22

    申请号：US12823618

    申请日：2010-06-25

    申请人： David L. Knierim

    发明人： David L. Knierim

    IPC分类号： B41J29/38

    CPC分类号： B41J2/0458 ,  B41J2/04581

    摘要： A device has an output circuit arranged to receive a voltage pulse, a body diode associated with the output circuit, and a detection circuit electrically coupled to the voltage pulse and the output circuit, such that when the voltage pulse transitions from high to low, the detection circuit is configured to activate the output circuit to reduce current in the body diode. A circuit to control parasitic power dissipation in an integrated circuit has a P-channel FET having a source electrode coupled to a high voltage signal source and a drain electrode coupled to a load, a body diode associated with the P-channel FET, and a detection circuit. An apparatus has a print head arranged to dispense ink, a print driver circuit electrically coupled to the print head and configured to provide voltage pulses to actuate the ejection ports through an output circuit, and a detection circuit electrically coupled to the output circuit.

    摘要翻译： 设备具有布置成接收电压脉冲的输出电路，与输出电路相关联的体二极管，以及电耦合到电压脉冲和输出电路的检测电路，使得当电压脉冲从高转变为低电平时， 检测电路被配置为激活输出电路以减少体二极管中的电流。 用于控制集成电路中的寄生功率耗散的电路具有P沟道FET，其具有耦合到高电压信号源的源极和耦合到负载的漏电极，与P沟道FET相关联的体二极管，以及 检测电路。 一种设备具有布置成分配墨水的打印头，电连接到打印头并被配置为提供电压脉冲以通过输出电路致动喷射口的打印驱动器电路，以及电耦合到输出电路的检测电路。