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    System and method for print head maintenance during continuous printing
    21.
    发明申请
    System and method for print head maintenance during continuous printing 有权
    连续打印时打印头维护的系统和方法

    公开(公告)号：US20090091596A1

    公开(公告)日：2009-04-09

    申请号：US11906687

    申请日：2007-10-03

    申请人： Ronald A. Askeland ,  William S. Osbome ,  Thomas M. Sabo

    发明人： Ronald A. Askeland ,  William S. Osbome ,  Thomas M. Sabo

    IPC分类号： B41J2/165

    CPC分类号： B41J2/16588

    摘要： An ink jet printer system includes a partially redundant page-wide array of moveable ink jet print heads in a print zone, means outside of the print zone for servicing the print heads, and a transfer system, configured to selectively move a redundant portion of the array of print heads out of the print zone for servicing while printing with a remainder of the array.

    摘要翻译： 喷墨打印机系统包括在打印区域中的可移动喷墨打印头的部分冗余页面范围的阵列，用于维护打印头的打印区域外部的装置，以及传送系统，其被配置为选择性地移动 打印头阵列的打印区域用于在使用阵列的其余部分打印时进行维修。

    Print mode for improved leading and trailing edges and text print quality
    22.
    发明授权
    Print mode for improved leading and trailing edges and text print quality 有权
    打印模式，用于改进前后边缘和文字打印质量

    公开(公告)号：US06247787B1

    公开(公告)日：2001-06-19

    申请号：US09562264

    申请日：2000-04-29

    申请人： Matthew D Giere ,  Ronald A. Askeland ,  Clayton L Holstun

    发明人： Matthew D Giere ,  Ronald A. Askeland ,  Clayton L Holstun

    IPC分类号： B41J2145

    CPC分类号： B41J2/2132 ,  B41J19/142 ,  G06K15/102 ,  G06K2215/0074

    摘要： Described is a method for incremental printing with an inkjet swath printer by depositing multiple drops of an ink from a printhead in each column of an image, in each scanning pass of the printhead over a print medium by obtaining the image, analyzing the image to determine which drops of ink will define leading and trailing edges in each row of the image element with respect to a scanning direction, removing at least one drop of ink preceding the drop defining the trailing edges in each of the rows, removing at least one drop of ink after the drop defining the leading edges in each of the rows and depositing the remaining drops of the ink on the medium while passing the printhead over the media in the scanning direction. Also described is a method of printing with an inkjet printing system scanning over a print medium by providing a printhead having a supply of ink and a plurality of ink ejection chambers for ejecting ink onto the print medium, each of the ink ejection chambers depositing the ink onto a corresponding row, the ink ejection chambers ejecting ink drops in a range of frequencies between a base firing frequency and a maximum firing frequency, obtaining an image, analyzing the image to determine which drops of ink will define leading and trailing edges in each row of the image element with respect to a scanning direction, ejecting the drops of ink defining the leading trailing edges in each of the rows at an ejection frequency less than the maximum frequency and depositing the remaining drops of the ink on the medium while passing the printhead over the media in the scanning direction.

    摘要翻译： 描述了一种通过使用喷墨条带打印机进行增量打印的方法，该打印机通过在打印介质的每次扫描遍历中，通过在打印介质上的每个扫描遍历中，从图像的每列中的打印头中沉积多滴墨水，通过获得图像，分析图像来确定 这些墨水滴将相对于扫描方向限定图像元件的每行中的前缘和后缘，在每个行中去除在液滴之前的至少一滴墨，限定每个行中的后缘，去除至少一滴 墨滴在液滴之后限定每行中的前缘，并将剩余的墨水滴在介质上，同时使扫描头沿扫描方向通过介质。 还描述了一种通过提供具有墨供应的打印头和用于将墨喷射到打印介质上的多个墨喷出室的打印头，通过在打印介质上扫描的喷墨打印系统进行打印的方法，每个喷墨室沉积墨 在相应的行上，喷墨室在基本点火频率和最大点火频率之间的频率范围内喷射墨滴，获得图像，分析图像以确定哪一滴墨水将定义每行中的前缘和后缘 相对于扫描方向的图像元素的喷射频率，以小于最大频率的喷射频率喷射限定每行中的前缘的油墨滴，并且将剩余的墨滴沉积在介质上，同时通过打印头 在扫描方向上的介质上。

    Reduction of periodic artifacts in incremental printing, through use of asymmetric randomized superpixels
    23.
    发明授权
    Reduction of periodic artifacts in incremental printing, through use of asymmetric randomized superpixels 失效
    通过使用不对称随机超像素减少增量打印中的周期性伪像

    公开(公告)号：US06185002B2

    公开(公告)日：2001-02-06

    申请号：US09042880

    申请日：1998-03-16

    申请人： Ronald A. Askeland ,  Amir Doron

    发明人： Ronald A. Askeland ,  Amir Doron

    IPC分类号： B41B1500

    CPC分类号： G06K15/107 ,  H04N1/40087

    摘要： Periodic inking artifacts are reduced by randomness introduced into an image-processing stage. This goes beyond providing a fixed pattern earlier derived through random processing; rather the system literally introduces randomness or at least pseudorandomness into the image-processing stage. Preferably a superpixel is selected, essentially at random, from a plurality of superpixels—at least for points with an intermediate tonal level, which is the part of the tonal range where dot-placement error is most conspicuous. If image scaling or some other reason for using superpixels (and starting with a coarse grid) is not present, the randomness-introduction approach preferably includes preparing the image using a pixel grid that is coarser than the available printer resolution. The selected superpixel is applied at the coarser grid to define a set of individual pixels at printer resolution. A major preference relates to printing in sequential printing passes: a printmasking stage, downstream and distinct from the image-processing stage, is used to establish temporal assignments of inking into the plural passes. Because most or many printing systems already employ superpixels anyway for various purposes, the simple tactic of selecting superpixels randomly achieves major gains in artifact reduction but adds little complexity, apparatus, processing time or cost.

    摘要翻译： 通过引入到图像处理阶段的随机性来减少定期的着墨伪影。 这超出了通过随机处理提供早期派生的固定模式; 相反，该系统从字面上将随机性或至少伪随机性引入图像处理阶段。 优选地，基本上随机地从多个超像素中选择超像素，至少对于具有中间色调级的点，其是点位置误差最显着的色调范围的一部分。 如果不存在使用超像素（或以粗网格开始）的图像缩放或其他原因，则随机引入方法优选地包括使用比可用的打印机分辨率更粗糙的像素网格准备图像。 所选择的超像素被应用于较粗的网格以在打印机分辨率下定义一组单独的像素。 主要的偏好涉及在顺序打印通行证中的打印：印刷掩模阶段，下游和不同于图像处理阶段，用于建立多次通过中的墨迹的时间分配。 由于绝大多数或多个打印系统已经为了各种目的而采用超像素，所以选择超像素的简单策略随机地实现了神器减少的主要增益，但是增加了很少的复杂性，装置，处理时间或成本。

    INKJET IMAGING METHODS, IMAGING METHODS AND HARD IMAGING DEVICES
    26.
    发明申请
    INKJET IMAGING METHODS, IMAGING METHODS AND HARD IMAGING DEVICES 有权
    INKJET成像方法，成像方法和硬件成像装置

    公开(公告)号：US20110058001A1

    公开(公告)日：2011-03-10

    申请号：US12990617

    申请日：2008-05-02

    申请人： Omer Gila ,  Ronald A. Askeland ,  Yossi Rosen

    发明人： Omer Gila ,  Ronald A. Askeland ,  Yossi Rosen

    IPC分类号： B41J2/01

    CPC分类号： B41J2/0057 ,  B41J2/3855

    摘要： Inkjet imaging methods, imaging methods and hard imaging devices are described. According to one embodiment, an imaging method includes accessing image data of an image to be formed; using the image data, controlling a print device to eject a plurality of droplets of a liquid marking agent corresponding to the image to be formed, wherein the droplets of the liquid marking agent individually comprise a plurality of ink particles; using the print device, ejecting the droplets of the liquid marking agent; after the ejecting, receiving the droplets of the liquid marking agent upon a transfer member; and after the receiving, transferring the ink particles of the droplets from the transfer member to media to form a hard version of the image using the media.

    摘要翻译： 描述喷墨成像方法，成像方法和硬成像装置。 根据一个实施例，成像方法包括访问要形成的图像的图像数据; 使用图像数据，控制打印装置喷射与要形成的图像相对应的液体标记剂的多个液滴，其中液体标记剂的液滴分别包含多个墨颗粒; 使用打印装置喷射液体标记剂的液滴; 在喷射之后，将液体标记剂的液滴接收在转印部件上; 并且在接收之后，将墨水的墨颗粒从转印部件转印到介质上以形成使用该介质的图像的硬版本。

    Media print system
    27.
    发明授权
    Media print system 有权
    媒体打印系统

    公开(公告)号：US07654635B2

    公开(公告)日：2010-02-02

    申请号：US10988902

    申请日：2004-11-15

    申请人： Ronald A. Askeland ,  William S. Osborne

    发明人： Ronald A. Askeland ,  William S. Osborne

    IPC分类号： B41J23/00 ,  B41J2/01

    CPC分类号： B41J3/543 ,  B41J2/16517 ,  B41J2/2114

    摘要： A media print system includes a first print unit, a second print unit, at least one actuator configured to move the first unit and the second unit relative to one another and a controller configured to generate control signals. The at least one actuator positions the first unit and the second unit at the first and second positions, respectively, during a first longitudinal pass of a medium and positions the first unit at a third position during a second longitudinal pass of the medium in response to the control signals.

    摘要翻译： 介质打印系统包括第一打印单元，第二打印单元，至少一个致动器，其配置成相对于彼此移动第一单元和第二单元;以及控制器，被配置为产生控制信号。 至少一个致动器在介质的第一纵向通过期间将第一单元和第二单元分别定位在第一和第二位置处，并且在介质的第二纵向通过期间将第一单元定位在第三位置，以响应于 控制信号。