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    Systems and methods for obtaining a spatial color profile, and calibrating a marking system
    1.
    发明授权
    Systems and methods for obtaining a spatial color profile, and calibrating a marking system 有权
    用于获得空间色彩轮廓的系统和方法，以及校准标记系统

    公开(公告)号：US07295340B2

    公开(公告)日：2007-11-13

    申请号：US10248387

    申请日：2003-01-15

    申请人： Lalit K. Mestha ,  Steve Bolte ,  Eli Saber ,  Shawn Updegraff

    发明人： Lalit K. Mestha ,  Steve Bolte ,  Eli Saber ,  Shawn Updegraff

    IPC分类号： H04N1/50

    CPC分类号： H04N1/4078

    摘要： Tone reproduction curves for calibrating a marking system are obtained using a test pattern with a plurality of patches, preferably a plurality of first test patches extending in a first direction and at least one second test patch extending in a second direction crossing the first direction. Reflectance values are obtained from the first and second test patches. A set of gray balanced tone reproduction curves are obtained based on the reflectance values of the first test patches, and a set of spatial gray balanced tone reproduction curves are obtained based on the reflectance values of the second test patches.

    摘要翻译： 用于校准标记系统的色调再现曲线是使用具有多个贴片的测试图案，优选地是沿第一方向延伸的多个第一测试贴片和沿与第一方向交叉的第二方向延伸的至少一个第二测试贴片获得的。 从第一和第二测试片获得反射率值。 基于第一测试片的反射率值获得一组灰平衡色调再现曲线，并且基于第二测试片的反射率值获得一组空间灰度平衡色调再现曲线。

    Method of uniformity correction in an electrostatographic printer by using a second actuator
    2.
    发明申请
    Method of uniformity correction in an electrostatographic printer by using a second actuator 有权
    通过使用第二致动器的静电打印机中的均匀性校正方法

    公开(公告)号：US20060227391A1

    公开(公告)日：2006-10-12

    申请号：US11094406

    申请日：2005-03-31

    申请人： Shawn Updegraff

    发明人： Shawn Updegraff

    IPC分类号： H04N1/46

    CPC分类号： H04N1/506 ,  G03G15/5041 ,  H04N1/6027 ,  H04N1/6041

    摘要： Various exemplary embodiments include an electrostatographic printing apparatus and a method of correcting one or more associated uniformity profiles. In various exemplary embodiments the apparatus includes first and second actuators. In various exemplary embodiments the method includes measuring an image and generating at least one corresponding TRC, generating a charge profile, subtracting a reference patch density from a patch value to obtain a difference profile, converting the difference profile to a ROS intensity profile and an LED intensity profile, and iteratively repeating the steps of measuring, generating, subtracting and converting until within an acceptable range.

    摘要翻译： 各种示例性实施例包括静电印刷装置和校正一个或多个相关联的均匀性曲线的方法。 在各种示例性实施例中，该装置包括第一和第二致动器。 在各种示例性实施例中，该方法包括测量图像并生成至少一个对应的TRC，产生电荷曲线，从补片值减去参考斑块密度以获得差异分布，将差异分布转换为ROS强度分布和LED 强度分布，并且迭代地重复测量，生成，减去和转换的步骤，直到在可接受的范围内。

    Light intensity boost for subpixel enhancement
    4.
    发明授权
    Light intensity boost for subpixel enhancement 有权
    子像素增强的光强度提升

    公开(公告)号：US08089996B2

    公开(公告)日：2012-01-03

    申请号：US12138882

    申请日：2008-06-13

    申请人： Shawn Updegraff ,  William Wayman

    发明人： Shawn Updegraff ,  William Wayman

    IPC分类号： H01S3/00

    CPC分类号： G03G15/326 ,  G03G15/043 ,  G03G2215/0404 ,  H01S5/0428

    摘要： Techniques are disclosed that enable fine features such as serifs and narrow strokes of texts to be produced by xerographic devices, for example. The fine features may be generated by subpixels which are produced when a pulse width used to image a pixel is shorter than a corresponding physical size of a laser beam spot used to write the image on a Xerographic photoreceptor. The laser driver may be modified to drive a light emitting element with a boost current profile that includes an overshoot above a steady state current at a rising edge. The overshoot results in a light intensity time profile that has an increased area for a subpixel.

    摘要翻译： 已经公开了技术，例如能够通过静电印刷设备产生诸如文字的精细特征，例如文本的窄笔画。 精细特征可以由用于对像素成像的脉冲宽度短于用于将图像写入静电复印机感光体的激光束点的对应物理尺寸时产生的子像素产生。 可以修改激光驱动器以驱动具有升高电流分布的发光元件，该升压电流分布在上升沿包括高于稳态电流的过冲。 过冲导致光强度时间曲线对于子像素具有增加的面积。

    Method and system for improved control of xerographic parameters in a high quality document system
    5.
    发明申请
    Method and system for improved control of xerographic parameters in a high quality document system 失效
    用于改进高质量文件系统中静电参数的控制的方法和系统

    公开(公告)号：US20070109394A1

    公开(公告)日：2007-05-17

    申请号：US11280796

    申请日：2005-11-16

    申请人： Shawn Updegraff ,  Eric Gross

    发明人： Shawn Updegraff ,  Eric Gross

    IPC分类号： B41J2/45

    CPC分类号： G03G15/50

    摘要： A system changes the setpoint of a digital reprographic system in response to the local image content by utilizing tag data that contains information identifying the image content type of a corresponding image data pixel. The system modifies the reproduction characteristics of the output to accommodate the diverse image content types by simultaneously controlling the overall tone reproduction curve of the system on a pixel-by-pixel basis.

    摘要翻译： 系统通过利用包含标识对应图像数据像素的图像内容类型的信息的标签数据来响应于本地图像内容来改变数字复制系统的设定点。 该系统通过以逐个像素为基础同时控制系统的整体色调再现曲线来修改输出的再现特性以适应不同的图像内容类型。

    Closed-loop compensation of streaks by ros intensity variation
    7.
    发明申请
    Closed-loop compensation of streaks by ros intensity variation 有权
    通过ros强度变化对条纹进行闭环补偿

    公开(公告)号：US20060001911A1

    公开(公告)日：2006-01-05

    申请号：US10872922

    申请日：2004-06-21

    申请人： Daniel Viassolo ,  Howard Mizes ,  Shawn Updegraff

    发明人： Daniel Viassolo ,  Howard Mizes ,  Shawn Updegraff

    IPC分类号： G06K15/00 ,  H04N1/409 ,  G06T5/00

    CPC分类号： H04N1/4015

    摘要： A method and system compensates for streak defects in an image formed using a raster output scanning device. A reflectance profile is generated from an image generated by the raster output scanning device. Thereafter, a difference profile is determined. The difference profile is determined based upon the generated reflectance profile and a uniform profile. A compensation profile is generated based on the determined difference profile. The compensation profile represents a change in an intensity profile for the raster output scanning device.

    摘要翻译： 一种方法和系统补偿使用光栅输出扫描装置形成的图像中的条纹缺陷。 从由光栅输出扫描装置生成的图像产生反射率分布。 此后，确定差异轮廓。 基于生成的反射率分布和均匀的轮廓来确定差分轮廓。 基于确定的差异轮廓产生补偿曲线。 补偿曲线表示光栅输出扫描装置的强度分​​布的变化。

    Methods for automated uniformity assessment and modification of image non-uniformities
    8.
    发明申请
    Methods for automated uniformity assessment and modification of image non-uniformities 有权
    自动均匀性评估和图像不均匀性修改的方法

    公开(公告)号：US20050151974A1

    公开(公告)日：2005-07-14

    申请号：US10756396

    申请日：2004-01-14

    申请人： Paul Butterfield ,  Joseph Hancock ,  Norman Roof ,  Shawn Updegraff

    发明人： Paul Butterfield ,  Joseph Hancock ,  Norman Roof ,  Shawn Updegraff

    IPC分类号： H04N1/00 ,  H04N1/401 ,  G01N21/55

    CPC分类号： H04N1/00015 ,  H04N1/00002 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00058 ,  H04N1/4015 ,  H04N2201/0096

    摘要： Methods for automated uniformity assessment and modification of image non-uniformities using an image measurement device capable of determining image reflectance and/or transmitter as a function of position, such as a spectrophotometer, a calorimeter, and/or a densitometer. One or more of these devices scan an image on a substrate, such as a sheet, thereby generating data representing image characteristics, such as, for example, image non-uniformity. The sheet may contain a reference/test pattern including one column, strip or patch intended to have a uniform density. This data generated by the device after the scan of the substrate is analyzed with signal processing algorithms for image characteristics assessment, including image spatial uniformity and compared to reference image characteristics including image spatial uniformity. An image modification profile may be generated to be applied to a marking system to thereby alter subsequent image data and improve image spatial uniformity of the marking system.

    摘要翻译： 使用能够确定作为位置的函数的图像反射率和/或发射器的图像测量装置，例如分光光度计，量热计和/或密度计，自动均匀性评估和图像不均匀性修改的方法。 这些设备中的一个或多个扫描诸如片材的衬底上的图像，从而生成表示图像特性的数据，例如图像不均匀性。 片材可以包含参考/测试图案，其包括一个旨在具有均匀密度的柱，条带或贴片。 在扫描基板之后由器件产生的数据用信号处理算法分析，用于图像特征评估，包括图像空间均匀性，并与包括图像空间均匀性的参考图像特性进行比较。 可以生成图像修改简档以应用于标记系统，从而改变后续图像数据并提高标记系统的图像空间均匀性。

    Systems and methods for diagnosing color image forming devices
    9.
    发明申请
    Systems and methods for diagnosing color image forming devices 有权
    用于诊断彩色图像形成装置的系统和方法

    公开(公告)号：US20050135821A1

    公开(公告)日：2005-06-23

    申请号：US10742937

    申请日：2003-12-23

    申请人： Michael Martin ,  Debbie Wickham ,  Shawn Updegraff

    发明人： Michael Martin ,  Debbie Wickham ,  Shawn Updegraff

    IPC分类号： G03G21/00 ,  G03G13/01 ,  G03G15/01 ,  G03G15/00

    CPC分类号： G03G15/0152 ,  G03G15/0163 ,  G03G2215/00063 ,  G03G2215/0164

    摘要： A diagnostic routine for determining the cause of color non-uniformity in a full color image forming device, by selecting a substation of one print station and using it in combination with a substation from another print station, while functionally omitting the intervening substations. The charge setting on the charge substation is adjusted to compensate for the increased distance between the charge substation, and the developing substation in this method.

    摘要翻译： 一种用于确定全色图像形成装置中的颜色不均匀性的原因的诊断程序，通过选择一个打印站的变电站并将其与来自另一打印站的变电站组合使用，同时在功能上省略中间变电站。 调整充电变电站的充电设置，以补偿充电变电站与开发变电站之间距离增加的方法。