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    Reducing printhead process color non-uniformities in a direct marking device
    3.
    发明授权
    Reducing printhead process color non-uniformities in a direct marking device 有权
    在直接打标设备中减少打印头处理颜色不均匀性

    公开(公告)号：US07880930B2

    公开(公告)日：2011-02-01

    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 ,  H04N1/46 ,  G03F3/08 ,  G06K9/00 ,  G06K9/40

    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 calibrating a printing system to compensate for sensor artifact using non-complementary illuminations of test patterns on an image substrate
    4.
    发明授权
    System and method for calibrating a printing system to compensate for sensor artifact using non-complementary illuminations of test patterns on an image substrate 有权
    用于校准打印系统的系统和方法，以使用图像基板上的测试图案的非互补照明来补偿传感器伪影

    公开(公告)号：US07980650B2

    公开(公告)日：2011-07-19

    申请号：US11890879

    申请日：2007-08-08

    申请人： Yeqing Zhang ,  Howard A. Mizes ,  Luo Cheng

    发明人： Yeqing Zhang ,  Howard A. Mizes ,  Luo Cheng

    IPC分类号： B41J29/393

    CPC分类号： B41J29/393

    摘要： A system removes a light sensor artifact from a light sensor in a printer that is used to obtain reflectance measurements from test patterns printed on an image substrate. The system includes a print head for ejecting a plurality of pixels having a first single color in a test pattern onto an image substrate, a light source for illuminating the test pattern on the image substrate with a light, a light sensor for measuring reflectance of the first portion of the test pattern with reference to a light having a color that is non-complementary to the first single color of the test pattern, measuring reflectance of the first portion of the test pattern with reference to a light that is complementary to the first single color of the test pattern, and measuring reflectance of the second portion of the test pattern with reference to the complementary light, the second portion including an area that overlaps the first portion of the test pattern, and a sensor controller configured to scale the reflectance of the first portion measured with reference to the non-complementary light to minimize a difference between the reflectance of the first portion measured with reference to the complementary light and the reflectance of the second portion measured with reference to the complementary light in the overlapped area.

    摘要翻译： 系统从用于从印刷在图像基板上的测试图形获得反射率测量值的打印机中的光传感器去除光传感器伪影。 该系统包括用于将测试图案中的具有第一单色的多个像素喷射到图像基板上的打印头，用于用光照射图像基板上的测试图案的光源，用于测量该图像的反射率的光传感器 参考具有与测试图案的第一单色互补的颜色的光的测试图案的第一部分，参考与第一图像互补的光来测量测试图案的第一部分的反射率 测试图案的单色，并且参考互补光测量测试图案的第二部分的反射率，第二部分包括与测试图案的第一部分重叠的区域，以及被配置为缩放测试图案的反射率 相对于非互补光测量的第一部分，以最小化由第一部分测量的第一部分的反射率之间的差异 参考互补光和参照重叠区域中的互补光测量的第二部分的反射率。

    System and method for calibrating a printing system to compensate for sensor artifact using non-complementary illuminations of test patterns on an image substrate
    5.
    发明申请
    System and method for calibrating a printing system to compensate for sensor artifact using non-complementary illuminations of test patterns on an image substrate 有权
    用于校准打印系统的系统和方法，以使用图像基板上的测试图案的非互补照明来补偿传感器伪影

    公开(公告)号：US20090040261A1

    公开(公告)日：2009-02-12

    申请号：US11890879

    申请日：2007-08-08

    申请人： Yeqing Zhang ,  Howard A. Mizes ,  Luo Cheng

    发明人： Yeqing Zhang ,  Howard A. Mizes ,  Luo Cheng

    IPC分类号： B41J29/393 ,  H01J40/14

    CPC分类号： B41J29/393

    摘要： A system removes a light sensor artifact from a light sensor in a printer that is used to obtain reflectance measurements from test patterns printed on an image substrate. The system includes a print head for ejecting a plurality of pixels having a first single color in a test pattern onto an image substrate, a light source for illuminating the test pattern on the image substrate with a light, a light sensor for measuring reflectance of the first portion of the test pattern with reference to a light having a color that is non-complementary to the first single color of the test pattern, measuring reflectance of the first portion of the test pattern with reference to a light that is complementary to the first single color of the test pattern, and measuring reflectance of the second portion of the test pattern with reference to the complementary light, the second portion including an area that overlaps the first portion of the test pattern, and a sensor controller configured to scale the reflectance of the first portion measured with reference to the non-complementary light to minimize a difference between the reflectance of the first portion measured with reference to the complementary light and the reflectance of the second portion measured with reference to the complementary light in the overlapped area.

    摘要翻译： 系统从用于从印刷在图像基板上的测试图形获得反射率测量值的打印机中的光传感器去除光传感器伪影。 该系统包括用于将测试图案中的具有第一单色的多个像素喷射到图像基板上的打印头，用于用光照射图像基板上的测试图案的光源，用于测量该图像的反射率的光传感器 参考具有与测试图案的第一单色互补的颜色的光的测试图案的第一部分，参考与第一图像互补的光来测量测试图案的第一部分的反射率 测试图案的单色，并且参考互补光测量测试图案的第二部分的反射率，第二部分包括与测试图案的第一部分重叠的区域，以及被配置为缩放反射率的传感器控制器 相对于非互补光测量的第一部分，以最小化由第一部分测量的第一部分的反射率之间的差异 参考互补光和参照重叠区域中的互补光测量的第二部分的反射率。

    Method and apparatus for electronic registration in a binary image path
    6.
    发明授权
    Method and apparatus for electronic registration in a binary image path 有权
    用于二进制图像路径中的电子注册的方法和装置

    公开(公告)号：US06816269B1

    公开(公告)日：2004-11-09

    申请号：US09666706

    申请日：2000-09-21

    申请人： Robert P. Loce ,  Yeqing Zhang ,  Martin E. Banton ,  Nancy B. Goodman ,  Susan J. Zoltner ,  Steve P. Hoover

    发明人： Robert P. Loce ,  Yeqing Zhang ,  Martin E. Banton ,  Nancy B. Goodman ,  Susan J. Zoltner ,  Steve P. Hoover

    IPC分类号： G06F1500

    CPC分类号： H04N1/047 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/04787 ,  H04N2201/04794

    摘要： A registration system for image data in a binary image path includes a registration parameter source, such as a preprogrammed memory or a dynamic device, which provides registration parameters to correct for registration errors from a predetermined reference likely or predicted to occur during image output. A warping processor is in data communication with the registration parameter source which applies a selected registration parameter to an element of the image data resulting in a warped data element, minimizing the effects of the registration error. The system optionally includes an image reducing device which receives groups of high addressable binary image data and converts them to a single pixel. The pixel is then provided to the warping processor. The warping processor applies the selected registration parameter, either static or dynamically selected, from the registration parameter source to the averaged single pixel producing a warped data element. The warped data element is then optionally provided to a tone reproduction curve calibrator which adjusts for darkness errors induced by the warping or displacement of the warped data element. The calibrated pixel is then re-rendered by a processor which processes the calibrated pixel back into a plurality of print-ready data elements. The processor estimates quantization errors induced by the warping of the pixel positioning and disperses that error to following pixels. The print-ready data elements are provided to an image output terminal which produces a physical representation of the original binary image.

    Method And System For Measuring And Compensating For Process Direction Artifacts In An Optical Imaging System In An Inkjet Printer
    7.
    发明申请
    Method And System For Measuring And Compensating For Process Direction Artifacts In An Optical Imaging System In An Inkjet Printer 有权
    用于在喷墨打印机中的光学成像系统中测量和补偿过程方向人工制品的方法和系统

    公开(公告)号：US20110279503A1

    公开(公告)日：2011-11-17

    申请号：US12780654

    申请日：2010-05-14

    申请人： Howard A. Mizes ,  Helen HaeKyung Shin ,  Yeqing Zhang

    发明人： Howard A. Mizes ,  Helen HaeKyung Shin ,  Yeqing Zhang

    IPC分类号： B41J29/38

    CPC分类号： B41J29/393 ,  B41J3/543 ,  B41J2029/3935

    摘要： A printer operating method enables a controller to identify process direction errors in an optical imaging system. The method includes identifying a printhead roll error for each printhead in a plurality of printheads in a printer, moving each printhead by an amount that corrects the printhead roll error for the corresponding printhead, generating a plurality of dashes on media with the plurality of printheads as the media moves past the plurality of printheads, identifying a position for each dash in the process direction from image data of the plurality of dashes on the media, identifying a displacement in the process direction for each optical detector in a linear array of optical detectors used to generated the image data of the plurality of dashes, the displacement being identified with reference to the identified positions for the dashes, and operating the printer to compensate for the identified displacements of the optical detectors.

    摘要翻译： 打印机操作方法使得控制器能够识别光学成像系统中的过程方向误差。 该方法包括识别打印机中的多个打印头中的每个打印头的打印头滚动误差，使每个打印头移动一定量，该量可校正相应打印头的打印头滚动误差，在多个打印头的介质上产生多个破折号， 介质移动通过多个打印头，从介质上的多个破折号的图像数据中识别处理方向上每个破折号的位置，识别所使用的光学检测器的线性阵列中每个光学检测器的处理方向上的位移 为了产生多个破折号的图像数据，该位移是参考用于破折号的识别的位置来识别的，并且操作打印机以补偿所识别出的光学检测器的位移。

    Test pattern effective for coarse registration of inkjet printheads and methods of analysis of image data corresponding to the test pattern in an inkjet printer
    8.
    发明授权
    Test pattern effective for coarse registration of inkjet printheads and methods of analysis of image data corresponding to the test pattern in an inkjet printer 有权
    用于喷墨打印头的粗略配准的测试图案以及与喷墨打印机中的测试图案对应的图像数据的分析方法

    公开(公告)号：US08602518B2

    公开(公告)日：2013-12-10

    申请号：US12754730

    申请日：2010-04-06

    申请人： Howard A. Mizes ,  Michael C. Mongeon ,  Helen HaeKyung Shin ,  Yeqing Zhang

    发明人： Howard A. Mizes ,  Michael C. Mongeon ,  Helen HaeKyung Shin ,  Yeqing Zhang

    IPC分类号： B41J29/393

    CPC分类号： B41J2/2142 ,  B41J2/2146

    摘要： A test pattern printed by printheads in an inkjet printer enables image analysis of the test pattern that identifies positions of the printheads and the inkjets operating in the printheads. The test pattern includes a plurality of arrangements of dashes, each arrangement of dashes having a predetermined number of rows and a predetermined number of columns, each dash in a row of dashes in the arrangement of dashes being separated by a first predetermined distance and each dash in a column of dashes in the arrangement of dashes being separated by a second predetermined distance, each dash in a column of an arrangement of dashes being ejected by a single inkjet ejector in a printhead of the inkjet printer, and a plurality of unprinted areas interspersed between the plurality of arrangements of dashes.

    摘要翻译： 由喷墨打印机中的打印头打印的测试图案使得能够对识别打印头和在打印头中操作的喷墨打印头的位置的测试图案进行图像分析。 测试图案包括多个虚线的布置，每个排列的虚线具有预定数量的行和预定数量的列，每一个以划线的排列划分为虚线的排列间隔第一预定距离，并且每个划线 在以划分第二预定距离的虚线排列的虚线栏中，由喷墨打印机的打印头中的单个喷墨喷射器排列的虚线排列中的每个划痕，并且散布着多个未打印区域 在多个布置的破折号之间。

    System and method for attenuating rotating member contamination affecting uniformity measurements in an inkjet imaging device
    9.
    发明授权
    System and method for attenuating rotating member contamination affecting uniformity measurements in an inkjet imaging device 有权
    用于衰减影响喷墨成像装置中的均匀性测量的旋转部件污染的系统和方法

    公开(公告)号：US08317291B2

    公开(公告)日：2012-11-27

    申请号：US12621356

    申请日：2009-11-18

    申请人： Howard A. Mizes ,  Yeqing Zhang

    发明人： Howard A. Mizes ,  Yeqing Zhang

    IPC分类号： B41J29/393

    CPC分类号： H04N1/4015

    摘要： A method enables an inkjet printing system to attenuate image noise in an image of a test strip obtained as print media bearing the test strip travels over a roller in the printing system. The method includes illuminating blank media as the media travels over a rotating member, generating electrical signals corresponding to light reflected by the blank media as the blank media travels over the rotating member, converting the electrical signals to image data of the blank media, printing a test strip on media, illuminating the media as the media on which the test strip is printed travels over the rotating member, generating electrical signals corresponding to light reflected by the media as the media on which the test strip is printed travels over the rotating member, converting the electrical signals to image data of the media on which the test strip is printed, modifying the image data of the media on which the test strip is printed with the image data of the blank media, and storing the modified image data in memory.

    摘要翻译： 一种方法使得喷墨打印系统能够衰减作为打印介质的测试条的图像中的图像噪声，该打印介质承载测试条在打印系统中的辊上行进。 该方法包括当介质在旋转构件上行进时照射空白介质，当空白介质在旋转构件上行进时，产生对应于由空白介质反射的光的电信号，将电信号转换成空白介质的图像数据， 介质上的测试条，当印刷有测试条的介质在旋转构件上行进时照射介质，产生对应于介质反射的光的电信号，因为其上印刷有测试条的介质在旋转构件上行进， 将电信号转换成其上印有测试条的介质的图像数据，用空白介质的图像数据修改打印有测试条的介质的图像数据，并将修改的图像数据存储在存储器中。

    Test Pattern Effective For Coarse Registration Of Inkjet Printheads And Method Of Analysis Of Image Data Corresponding To The Test Pattern In An Inkjet Printer
    10.
    发明申请
    Test Pattern Effective For Coarse Registration Of Inkjet Printheads And Method Of Analysis Of Image Data Corresponding To The Test Pattern In An Inkjet Printer 有权
    用于喷墨打印头粗略对准的测试图案以及与喷墨打印机中测试图案对应的图像数据分析方法

    公开(公告)号：US20110242186A1

    公开(公告)日：2011-10-06

    申请号：US12754730

    申请日：2010-04-06

    申请人： Howard A. Mizes ,  Michael C. Mongeon ,  Helen HaeKyung Shin ,  Yeqing Zhang

    发明人： Howard A. Mizes ,  Michael C. Mongeon ,  Helen HaeKyung Shin ,  Yeqing Zhang

    IPC分类号： B41J29/393

    CPC分类号： B41J2/2142 ,  B41J2/2146

    摘要： A test pattern printed by printheads in an inkjet printer enables image analysis of the test pattern that identifies positions of the printheads and the inkjets operating in the printheads. The test pattern includes a plurality of arrangements of dashes, each arrangement of dashes having a predetermined number of rows and a predetermined number of columns, each dash in a row of dashes in the arrangement of dashes being separated by a first predetermined distance and each dash in a column of dashes in the arrangement of dashes being separated by a second predetermined distance, each dash in a column of an arrangement of dashes being ejected by a single inkjet ejector in a printhead of the inkjet printer, and a plurality of unprinted areas interspersed between the plurality of arrangements of dashes.

    摘要翻译： 由喷墨打印机中的打印头打印的测试图案使得能够对识别打印头和在打印头中操作的喷墨打印头的位置的测试图案进行图像分析。 测试图案包括多个虚线的布置，每个排列的虚线具有预定数量的行和预定数量的列，每一个以划线的排列划分为虚线的排列间隔第一预定距离，并且每个划线 在以划分第二预定距离的虚线排列的虚线栏中，由喷墨打印机的打印头中的单个喷墨喷射器排列的虚线排列中的每个划痕，并且散布着多个未打印区域 在多个布置的破折号之间。