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    REDUCING PRINTHEAD PROCESS COLOR NON-UNIFORMITIES IN A DIRECT MARKING DEVICE
    21.
    发明申请
    REDUCING PRINTHEAD PROCESS COLOR NON-UNIFORMITIES IN A DIRECT MARKING DEVICE 有权
    减少打印过程颜色的非均匀性在直接标记设备

    公开(公告)号：US20090284762A1

    公开(公告)日：2009-11-19

    申请号：US12122762

    申请日：2008-05-19

    申请人： YEQING ZHANG ,  HOWARD A. MIZES ,  MENG YAO ,  SUSAN J. ZOLTNER

    发明人： YEQING ZHANG ,  HOWARD A. MIZES ,  MENG YAO ,  SUSAN J. ZOLTNER

    IPC分类号： H04N1/60

    CPC分类号： H04N1/58

    摘要： What is disclosed is a novel system and method for reducing process color banding due to printhead non-uniformities in a direct marking device. In one example, a first measurement of a printhead spatial non-uniformity is obtained along a first line in a color space which produces a spatial uniformity when a target primary color is printed alone. A first spatial tone reproduction curve is generated. A second measurement of the printhead spatial non-uniformity is obtained along a second line in color space in a coverage area of a process color which maximally changes a halftone structure of the target primary color. A second spatial TRC is generated. The first and second spatial TRCs are combined using a weighted average which balances the primary and process colors. A modified spatial TRC is generated. The printhead is adjusted at a location of the target primary color according to the modified spatial TRC.

    摘要翻译： 公开的是一种用于在直接标记装置中由于打印头不均匀性而减少处理颜色带的新型系统和方法。 在一个示例中，当单独打印目标原色时，沿着产生空间均匀性的颜色空间中的第一行获得打印头空间不均匀性的第一测量。 产生第一空间色调再现曲线。 在最大程度上改变目标原色的半色调结构的处理颜色的覆盖区域中，沿色彩空间中的第二行获得打印头空间不均匀性的第二测量。 产生第二空间TRC。 第一和第二空间TRC使用平衡主要和过程颜色的加权平均数进行组合。 生成修改后的空间TRC。 根据改进的空间TRC，将打印头调整到目标原色的位置。

    System and method for adjusting ink jet uniformity based on drop mass history
    22.
    发明授权
    System and method for adjusting ink jet uniformity based on drop mass history 失效

    公开(公告)号：US07597418B2

    公开(公告)日：2009-10-06

    申请号：US11888112

    申请日：2007-07-31

    申请人： David Allen Mantell ,  Howard A. Mizes

    发明人： David Allen Mantell ,  Howard A. Mizes

    IPC分类号： B41J29/393

    CPC分类号： B41J29/393

    摘要： A method for processing input document data uses a drop mass history for ink jets in a print head to adjust other document data processing. The method includes ejecting ink in a plurality of patterns onto an image substrate from a plurality of ink jets, each drop in a pattern corresponding to one drop mass history in a plurality of drop mass histories, identifying a relationship between drop masses for the drops in an ejected pattern and a reflectance parameter for the ejected pattern, measuring a reflectance value for each pattern ejected onto the image substrate, and identifying a drop mass value for each drop mass history in the plurality of drop mass histories, each drop mass value being identified from the measured reflectance value for each pattern and the identified relationships between the drop masses and the reflectance parameter for each pattern.

    Method and apparatus for adjusting printbar uniformity
    26.
    发明授权
    Method and apparatus for adjusting printbar uniformity 有权
    调整印刷条均匀性的方法和装置

    公开(公告)号：US07375740B2

    公开(公告)日：2008-05-20

    申请号：US11188300

    申请日：2005-07-25

    申请人： Howard A. Mizes

    发明人： Howard A. Mizes

    IPC分类号： B41J2/47 ,  B41J2/435

    CPC分类号： B41J29/393 ,  H04N1/4015

    摘要： In a printing system, a method is used for adjusting currents to LEDs in an LED printbar to achieve uniformity of the print. The line test pattern and halftone strips test pattern are printed. The test patterns are scanned. An LED line metric of each LED test pattern line and reflectance uniformity of each halftone test strip are measured. A line uniformity difference profile and a set of halftone strips uniformity difference profiles are concurrently calculated. A current value supplied to each LED associated with the test patterns is adjusted to simultaneously optimize the uniformity in the lines test pattern and the halftone strips test pattern.

    摘要翻译： 在打印系统中，使用一种方法来调节LED打印条中的LED的电流，以实现打印的均匀性。 打印线条测试图案和半色调条纹测试图案。 扫描测试图案。 每个LED测试图案线的LED线路度量和每个半色调测试条的反射均匀性被测量。 同时计算线均匀性差异分布和一组半色调条均匀性差异分布。 调整提供给与测试图案相关联的每个LED的电流值，以同时优化线测试图案和半色调条测试图案的均匀性。

    Measurement and control of high frequency banding in a marking system
    27.
    发明授权
    Measurement and control of high frequency banding in a marking system 有权
    标记系统中高频带测量与控制

    公开(公告)号：US07283143B2

    公开(公告)日：2007-10-16

    申请号：US10852243

    申请日：2004-05-25

    申请人： Howard A. Mizes ,  Beilei Xu ,  Chu-heng Liu ,  Robert P. Loce ,  Michael D. Thompson ,  Eric S. Hamby ,  R. Enrique Viturro

    发明人： Howard A. Mizes ,  Beilei Xu ,  Chu-heng Liu ,  Robert P. Loce ,  Michael D. Thompson ,  Eric S. Hamby ,  R. Enrique Viturro

    IPC分类号： G03G21/00

    CPC分类号： H04N1/00002 ,  H04N1/00015 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00087

    摘要： A method of measuring and controlling high frequency banding, the method includes creating a test pattern, sensing the test pattern with optical sensors, determining a beat frequency based on the sensed test pattern, and determining the frequency, phase and amplitude of high frequency banding based on the beat frequency. An exemplary embodiment of a feedback control method for controlling high frequency banding includes creating a test pattern, sensing the test pattern with optical sensors, measuring high frequency banding and adjusting the imaging parameters based on the measured high frequency banding in order to decrease the extent of high frequency banding. Moreover, an exemplary embodiment of a system for measuring high frequency banding includes an image marking device having a receiving member, optical sensors arranged on the receiving member, and a controller that is functionally coupled to the optical sensors and to the marking device.

    摘要翻译： 一种测量和控制高频带的方法，该方法包括创建测试图案，用光学传感器感测测试图案，基于感测到的测试图案确定拍频，以及确定基于高频带的频率，相位和幅度 在拍频上 用于控制高频带的反馈控制方法的示例性实施例包括创建测试图案，用光学传感器感测测试图案，测量高频带并基于所测量的高频带来调整成像参数，以便降低 高频带。 此外，用于测量高频带的系统的示例性实施例包括具有接收构件的图像标记装置，布置在接收构件上的光学传感器以及功能上耦合到光学传感器和标记装置的控制器。

    Method of adjusting print uniformity
    28.
    发明授权
    Method of adjusting print uniformity 有权
    调整打印均匀性的方法

    公开(公告)号：US06819352B2

    公开(公告)日：2004-11-16

    申请号：US10342543

    申请日：2003-01-15

    申请人： Howard A. Mizes ,  Daniel E. Viassolo

    发明人： Howard A. Mizes ,  Daniel E. Viassolo

    IPC分类号： B41J247

    CPC分类号： G06K15/1247 ,  G06K15/027 ,  H04N1/4015

    摘要： A method of adjusting print uniformity in a xerographic device is provided. The method includes: a) printing a test pattern, b) transferring the printed test pattern to a scanner, c) scanning the printed test pattern and detecting line information, d) communicating the detected information to a computer, e) determining measurements from the detected line information, f) calculating the difference between the measurements and target values, and g) depending on the difference, adjusting a current supplied to an individual LED of an LED printbar associated with the measurement to reduce the difference. In one aspect, a test pattern line is associated with an individual LED. In another aspect, test pattern lines are associated with two adjacent LEDs and three adjacent LEDs. In yet another aspect, the test pattern includes dotted lines. In still another aspect, the invention includes a xerographic device with an LED printbar, a computer, and a scanner device.

    摘要翻译： 提供了一种在静电印刷设备中调整印刷均匀性的方法。 该方法包括：a）打印测试图案，b）将打印的测试图案传送到扫描器，c）扫描打印的测试图案和检测线路信息，d）将检测到的信息传送到计算机，e） 检测线信息，f）计算测量值和目标值之间的差值，以及g）根据该差异，调节与测量相关联的LED打印机的单独LED的电流，以减小差异。 在一个方面，测试图案线与单独的LED相关联。 在另一方面，测试图案线与两个相邻的LED和三个相邻的LED相关联。 在另一方面，测试图案包括虚线。 在另一方面，本发明包括具有LED打印条，计算机和扫描仪装置的静电复印装置。

    Methods and systems for achieving print uniformity using reduced memory or computational requirements
    29.
    发明授权
    Methods and systems for achieving print uniformity using reduced memory or computational requirements 有权
    使用减少记忆或计算要求实现打印均匀性的方法和系统

    公开(公告)号：US08705120B2

    公开(公告)日：2014-04-22

    申请号：US12786694

    申请日：2010-05-25

    申请人： Yequing (Juliet) Zhang ,  Daniel E. Viassolo ,  Susan J. Zoltner ,  Howard A. Mizes ,  Robert P. Loce

    发明人： Yequing (Juliet) Zhang ,  Daniel E. Viassolo ,  Susan J. Zoltner ,  Howard A. Mizes ,  Robert P. Loce

    IPC分类号： H04N1/46 ,  H04N1/60

    CPC分类号： H04N1/407 ,  H04N1/4097

    摘要： Engine response curves (RCs) can be used for streak compensation for printed documents. A feedback control paradigm can be included to effect RC compensation. Singular Value Decomposition (SVD) can be used to represent each RC in the collection of spatial RC data as a linear combination of basis vectors. RCs are approximated by selecting the first few basis vectors, the approximation aiding in noise rejection and reducing computation in the controller by reducing dimensionality of the RC data from gray levels to the number of SVD bases selected. An optimal subset of RCs is selectable from the set of approximated RCs by clustering the SVD weights, the clustered SVD weights producing TRCs that span all engine response RCs generated by a printer. Compensation RCs are constructible using reduced number of bases and clustered SVD weights.

    摘要翻译： 发动机响应曲线（RC）可用于印刷文件的条纹补偿。 可以包括反馈控制范例来实现RC补偿。 奇异值分解（SVD）可以用于将空间RC数据的集合中的每个RC表示为基向量的线性组合。 通过选择前几个基本矢量近似，近似有助于噪声抑制，并通过将RC数据从灰度级降低到所选择的SVD基数来减少控制器中的计算。 通过对SVD权重进行聚类，可从集合的近似RC中选择RC的最佳子集，产生跨越由打印机产生的所有发动机响应RC的TRC的聚类SVD权重。 补偿RC可以使用减少的基数和聚类SVD权重来构建。

    Identifying edges of web media using textural contrast between web media and backer roll
    30.
    发明授权
    Identifying edges of web media using textural contrast between web media and backer roll 有权
    使用网络媒体和支持者卷之间的纹理对比来识别网络媒体的边缘

    公开(公告)号：US08666188B2

    公开(公告)日：2014-03-04

    申请号：US13070132

    申请日：2011-03-23

    申请人： Stuart Schweid ,  Howard A. Mizes

    发明人： Stuart Schweid ,  Howard A. Mizes

    IPC分类号： G06K9/48 ,  G06K9/76 ,  G06K9/40

    CPC分类号： B41J11/0095

    摘要： A computer-implemented method for identifying the edges of web media transported on a movable transport surface includes sensing, using a linear array sensor positioned along a process path of a web, the web media and the movable transport surface to obtain image data representative of variations in optical textural properties of the web media and variations in optical textural properties of the movable transport surface, wherein the variations in the optical textural properties of the movable transport surface are different from the variations in the optical textural properties of the web media; and processing the image data to determine differences between the variations in the optical textural properties of the web media and the variations in the optical textural properties of the movable transport surface to identify an edge of the web media.

    摘要翻译： 用于识别在可移动传输表面上传送的网状介质的边缘的计算机实现的方法包括使用沿着卷筒纸的处理路径定位的线性阵列传感器来感测网状介质和可移动传送表面，以获得表示变化的图像数据 纤维网介质的光学织构特性和可移动传送表面的光学纹理性质的变化，其中可移动传送表面的光学纹理性质的变化不同于网状介质的光学织构特性的变化; 并且处理图像数据以确定幅材介质的光学纹理特性的变化与可移动传送表面的光学纹理性质的变化之间的差异，以识别网状介质的边缘。