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    METHOD AND APPARATUS FOR COMPENSATION OF ARBITRARY BANDING SOURCES USING INLINE SENSING AND CONTROL
    61.
    发明申请
    METHOD AND APPARATUS FOR COMPENSATION OF ARBITRARY BANDING SOURCES USING INLINE SENSING AND CONTROL 有权
    使用内部感应和控制来补偿仲裁来源的方法和装置

    公开(公告)号：US20120250037A1

    公开(公告)日：2012-10-04

    申请号：US13074267

    申请日：2011-03-29

    申请人： Palghat S. Ramesh ,  Peter Paul

    发明人： Palghat S. Ramesh ,  Peter Paul

    IPC分类号： G06K15/02

    CPC分类号： B41J2/2135

    摘要： A method for compensation of banding in a marking platform includes: initiating a signature learning mode; establishing a timing reference after marking modules have achieved constant velocity; marking a test pattern over multiple intervals of a lowest fundamental frequency among marking modules; obtaining image data for the test pattern from a sensor; and processing the image data in relation to the timing reference to form banding profiles for multiple banding sources. Alternatively, the method may include: initiating a cycle up stage in a phase learning mode; establishing a timing reference after marking modules have achieved constant velocity; marking a test pattern over multiple intervals of a lowest fundamental frequency among marking modules; obtaining banding image data for the test pattern from a sensor; and processing the image data with banding signatures in relation to the timing reference to form phase estimates for each banding signature. Additional embodiments are also provided.

    摘要翻译： 一种用于在标记平台中补偿条带的方法包括：启动签名学习模式; 标记模块后建立定时参考值达到恒速; 在标记模块之间的最低基频的多个间隔上标记测试图案; 从传感器获取测试图案的图像数据; 并且相对于定时参考处理图像数据以形成多个条带源的条带简档。 或者，该方法可以包括：在相位学习模式中启动循环向上阶段; 标记模块后建立定时参考值达到恒速; 在标记模块之间的最低基频的多个间隔上标记测试图案; 从传感器获取测试图案的条带图像数据; 并且使用与定时参考相关的条带签名来处理图像数据，以形成每个条带签名的相位估计。 还提供了另外的实施例。

    STREAK COMPENSATION USING MODEL BASED PROJECTIONS FOR RUN TIME UPDATES
    63.
    发明申请
    STREAK COMPENSATION USING MODEL BASED PROJECTIONS FOR RUN TIME UPDATES 有权
    使用基于模型的投影的运行时间更新的STREAK补偿

    公开(公告)号：US20100220363A1

    公开(公告)日：2010-09-02

    申请号：US12781085

    申请日：2010-05-17

    申请人： Peter Paul ,  Claude S. Fillion ,  Stuart A. Schweid ,  Douglas R. Taylor ,  Brian R. Conrow

    发明人： Peter Paul ,  Claude S. Fillion ,  Stuart A. Schweid ,  Douglas R. Taylor ,  Brian R. Conrow

    IPC分类号： H04N1/409

    CPC分类号： H04N1/506

    摘要： Streak compensation in a digital printer is provided utilizing a spatially varying Printer Model and Run Time updates to generate Spatially Varying Tone Reproduction Curves (STRCs) which are used as actuators to compensate for streaks during run time. A full width array sensor is used to measure streak profiles and the STRCs are used as actuators to compensate for streaks. Streak profile measurements taken at a limited number of area coverage levels combined with a Printer Streaks Basis Function Model are used to estimate and project the streak behavior at all area coverage levels and at all inboard-to-outboard spatial locations. The projection is then used in a pixel-wise error feedback control scheme to drive each profile to a desired shape, thereby compensating for streaks.

    摘要翻译： 使用空间变化的打印机型号和运行时间更新来提供数字打印机中的条纹补偿，以生成空间变化色调再现曲线（STRC），这些曲线用作执行器来补偿运行时间内的条纹。 全宽阵列传感器用于测量条纹轮廓，并且STRC用作致动器来补偿条纹。 在有限数量的区域覆盖水平和打印机条纹基础函数模型的条件下进行条纹分布测量用于估计和计算所有区域覆盖水平和所有内到外空间位置的条纹行为。 然后将投影用于像素方向的误差反馈控制方案，以将每个轮廓驱动到期望的形状，从而补偿条纹。

    Methods and apparatuses for controlling print density
    64.
    发明授权
    Methods and apparatuses for controlling print density 失效
    用于控制打印浓度的方法和装置

    公开(公告)号：US07729015B2

    公开(公告)日：2010-06-01

    申请号：US11313018

    申请日：2005-12-20

    申请人： Howard A. Mizes ,  Robert P. Loce ,  Lalit K. Mestha ,  Peter Paul

    发明人： Howard A. Mizes ,  Robert P. Loce ,  Lalit K. Mestha ,  Peter Paul

    IPC分类号： G06K15/00 ,  H04N1/405 ,  H04N1/46

    CPC分类号： H04N1/6033 ,  H04N1/4015 ,  H04N1/6041

    摘要： Multiple input patches are received on an output media, which patches are characterized by print density representing a document processing system's response to different input grayscale values over a potential response space. Values associated with the print density of each input grayscale value are measured. Reference Engine Response Curves are determined from the measured print density values and input gray scale values. A variance data representative of a difference between each measured print density value and a respective reference Engine Response Curve is determined. The variance data is transformed into individual components. Based at least on one selected individual component, a set of calibration compensating Tone Reproduction Curves is determined. The determined calibration compensating Tone Reproduction Curves are applied to input grayscale values.

    摘要翻译： 在输出介质上接收多个输入补丁，这些补丁的特征在于打印密度，表示文档处理系统对潜在响应空间上的不同输入灰度值的响应。 测量与每个输入灰度值的打印浓度相关联的值。 参考引擎响应曲线由测量的打印浓度值和输入灰度值确定。 确定表示每个测量的打印浓度值和各个参考引擎响应曲线之间的差异的方差数据。 方差数据被转换为单个组件。 至少基于一个所选择的单独组件，确定一组校准补偿音再现曲线。 确定的校准补偿色调再现曲线被应用于输入灰度值。

    SYSTEM AND METHOD TO COMPENSATE STREAKS USING A SPATIALLY VARYING PRINTER MODEL AND RUN TIME UPDATES
    65.
    发明申请
    SYSTEM AND METHOD TO COMPENSATE STREAKS USING A SPATIALLY VARYING PRINTER MODEL AND RUN TIME UPDATES 有权
    使用空间变化的打印机模型和运行时间更新来补偿条纹的系统和方法

    公开(公告)号：US20090296158A1

    公开(公告)日：2009-12-03

    申请号：US12277594

    申请日：2008-11-25

    申请人： Peter Paul ,  Claude S. Fillion

    发明人： Peter Paul ,  Claude S. Fillion

    IPC分类号： H04N1/409

    CPC分类号： H04N1/6033 ,  H04N1/58 ,  H04N1/6041

    摘要： Systems and methods are provided for compensating for streak defects in images formed by an image forming device, such as a digital printer. The methods include using a spatially varying printer model and run time updates to generate spatially varying tone reproduction curves (STRC actuation) in an iterative control system for improving streak correction in a digital printing machine. Streaks are rapidly learned and eliminated at cycle-up and tracked and eliminated during print run time using STRC actuation.

    摘要翻译： 提供了系统和方法来补偿由诸如数字打印机的图像形成装置形成的图像中的条纹缺陷。 这些方法包括在迭代控制系统中使用空间变化的打印机模型和运行时间更新来产生空间变化的色调再现曲线（STRC致动），以改善数字印刷机中的条纹校正。 快速学习和消除条纹，并在使用STRC驱动的打印运行时间内跟踪和消除。

    Optimization of magnetic roll speed profile in an electrophotographic printing system
    67.
    发明申请
    Optimization of magnetic roll speed profile in an electrophotographic printing system 失效
    在电子照相打印系统中优化磁辊速度曲线

    公开(公告)号：US20080089717A1

    公开(公告)日：2008-04-17

    申请号：US11581832

    申请日：2006-10-17

    申请人： Aaron M. Burry ,  Daniel M. Bray ,  Paul C. Julien ,  Peter Paul ,  Palghat S. Ramesh

    发明人： Aaron M. Burry ,  Daniel M. Bray ,  Paul C. Julien ,  Peter Paul ,  Palghat S. Ramesh

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0935

    摘要： A control system for use with a development process including at least one magnetic roll with a settable speed is provided. The controller is directly or indirectly responsive to a reload feedback signal, which signal is generated in response to changes in output reload performance of the development process. In the case of direct responsiveness, the controller uses one or more reload feedback signals to facilitate magnetic roll speed setting. In the case of indirect responsiveness, the controller uses a reload sensitivity signal, which reload sensitivity signal varies as a function of input digital image content and output reload performance feedback, to facilitate magnetic roll speed setting.

    摘要翻译： 提供了一种用于包括至少一个具有可设置速度的磁辊的显影处理的控制系统。 控制器直接或间接响应于重新加载反馈信号，该信号是响应于开发过程的输出重载性能的变化产生的。 在直接响应的情况下，控制器使用一个或多个重载反馈信号来促进磁辊速度设定。 在间接响应的情况下，控制器使用重载灵敏度信号，该重载灵敏度信号作为输入数字图像内容和输出重载性能反馈的函数而变化，以便于磁辊速度设定。