公开(公告)号：JP2005315883A

公开(公告)日：2005-11-10

申请号：JP2005124386

申请日：2005-04-22

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： MESTHA LALIT K ,  TANDON JAGDISH C ,  BOLTE STEVEN B

IPC: G01J3/10 ,  G01J3/50

CPC classification number: G01J3/50 ,  G01J3/501 ,  G01N21/255 ,  G01N2201/0627

Abstract: PROBLEM TO BE SOLVED: To provide a full-width array spectrophotometer for full-width scan color analysis of a printed printing medium sheet.
SOLUTION: This spectrophotometer of the present invention has at least one substantially linear long irradiation array including a large number of LED illumination sources arranged adjacently to emit a plurality of different colors of emission lights, in a pattern repeated with at least four different colors extended sufficiently and substantially linearly to cross a printer pater sheet route substantially laterally for irradiating a lateral-directional irradiation band extended lateral-directionally over the printed printing medium sheet moving on the printer pater sheet route, continuously with the plurality of colors of emission lights, and a full-width array light image formation bar arranged adjacently to the at least one substantially linear array including the large number of LED illumination sources arranged adjacently to emit the plurality of different colors of the emission lights, and including a long array including a plurality of adjacently arranged photodetectors for the plurality of colors extended substantially parallel to the array. The light image formation bar is positioned to receive light reflected from the lateral-directional irradiation band extended lateral-directionally over the printing medium sheet moving on the pater sheet route.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供用于印刷的打印介质片材的全宽扫描颜色分析的全宽数列分光光度计。 解决方案：本发明的分光光度计具有至少一个基本线性的长照射阵列，其包括大量的LED照明源，其以相对于发射多种不同颜色的发射光的方式排列，以与至少四种不同的方式重复的图案 颜色基本上线性地延伸以跨越打印机打印机纸张路线基本上横向地照射横向方向照射带，其横向延伸在打印机打印机纸张路线上移动的打印的打印介质片材上，连续地与多种颜色的发光 以及与所述至少一个基本线性阵列相邻布置的全宽阵列光图像形成条，所述阵列包括相邻布置的大量LED照明源，以发射所述发射光的多种不同颜色，并且包括长阵列，其包括 多个相邻布置的用于t的光电探测器 他的多种颜色基本上平行于阵列延伸。 光图像形成条被定位成接收在横向方向照射带上反射的光，在横向方向上延伸在在纸张片材路线上移动的打印介质片材上。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2004229294A

公开(公告)日：2004-08-12

申请号：JP2004011614

申请日：2004-01-20

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： MESTHA LALIT K

IPC: B41J5/30 ,  B41J2/525 ,  G06T1/00 ,  H04N1/46 ,  H04N1/60

CPC classification number: H04N1/60 ,  H04N1/6033

Abstract: PROBLEM TO BE SOLVED: To provide a model for a color reproduction system which can be easily calibrated.
SOLUTION: A control system which calibrates the color printing device based on a dynamic color balance control of an output image of the device comprises a front end converter which converts an input signal indicating a target image including a pre-selected color into a device-dependent control signal according to a state space model, the color printing device 12 which outputs an output image in response to the above control signal, and a sensor 14 which measures a parameter indicating a color of the above output image from the above output image. An open loop system compares the above parameter with a corresponding parameter from the above target image and constitutes an output color sensitivity function based on a selected set of nominal device color value. A closed loop system controller constitutes the above state space model based on a gradient of the above sensitivity function at the above set of nominal device color value.
COPYRIGHT: (C)2004,JPO&NCIPI

公开(公告)号：JP2009043254A

公开(公告)日：2009-02-26

申请号：JP2008197591

申请日：2008-07-31

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： MESTHA LALIT K ,  PETER S FISHER ,  GIL ALVARO E ,  LOVE TONYA L

IPC: G06F3/12 ,  B41J2/525 ,  B41J29/46 ,  H04N1/387

CPC classification number: G06K19/06009 ,  B65H2511/415 ,  G03G15/50 ,  G06K2019/06225 ,  H04N1/32101 ,  H04N2201/3222 ,  H04N2201/327 ,  H04N2201/3271

Abstract: PROBLEM TO BE SOLVED: To provide a means for managing outputs of one or more of printing jobs, using a printing job identifier invisible by a human naked eye.
SOLUTION: An encoding system 100 includes a marking base material, spot color marking devices 104, 106 for marking one or more of spot colors on the base material, and a spectrophotometer 110 for reading the one or more of spot colors marked on the base material. Also, the marking devices control densities of the one or more of spot colors to get less than a prescribed density threshold value related to the spot colors, in order to generate the spot color which is substantially detection-impossible by the human naked eye.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于管理一个或多个打印作业的输出的装置，使用人肉眼看不见的打印作业标识符。 编码系统100包括标记基材，用于标记基材上的一种或多种专色的专色标记装置104,106，以及分光光度计110，用于读取标记在基材上的一种或多种专色 基材。 此外，标记装置控制一种或多种专色的浓度以获得小于与专色相关的规定浓度阈值，以便产生由人肉眼实质上不可检测的专色。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008298787A

公开(公告)日：2008-12-11

申请号：JP2008170552

申请日：2008-06-30

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： MESTHA LALIT K ,  SABER ELI S

IPC: G01N21/27 ,  G01N21/47 ,  H04N1/407 ,  H04N1/60

CPC classification number: H04N1/6033 ,  G03G2215/00042

Abstract: PROBLEM TO BE SOLVED: To provide a sensing system of marking substrate area coverage.
SOLUTION: A sensor using a plurality of LEDs is used to detect area coverage of marked patches on a marking substrate. The same sensor may also be used for color calibration. The marking substrate area coverage sensor obtains the reflectance measurement values from marked patches of a marking substrate. For example, the marked patches can be patches of a marking substance, such as toner, ink or paint, or patches marked by etching. By employing a Neugebauer model, the reflectance measurement values are obtained. A batch least squares algorithm may be used to estimate the appropriate parameters of the Neugebauer model. For enhancing accuracy, a recursive least-squares algorithm can be used. The recursive least-squares algorithm allows the sensor to calibrate itself, in response to changes in the sensing environment.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种标记衬底区域覆盖的感测系统。

解决方案：使用多个LED的传感器用于检测标记基板上的标记贴片的区域覆盖。 同样的传感器也可以用于颜色校准。 标记基板区域覆盖传感器从标记基板的标记贴片获得反射率测量值。 例如，标记的贴片可以是标记物质的补片，例如调色剂，油墨或油漆，或蚀刻标记的贴片。 通过采用Neugebauer模型，得到反射率测量值。 可以使用批量最小二乘法来估计Neugebauer模型的适当参数。 为了提高精度，可以使用递归最小二乘法算法。 递归最小二乘算法允许传感器根据感测环境的变化来校准自身。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008083697A

公开(公告)日：2008-04-10

申请号：JP2007242068

申请日：2007-09-19

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： MESTHA LALIT K ,  LOVE TONYA L ,  ROBBINS DANIEL A ,  DIEHL DENNIS M

IPC: G03G15/01 ,  B41J29/46

CPC classification number: G03G15/00 ,  G03G15/0131 ,  G03G2215/0161

Abstract: PROBLEM TO BE SOLVED: To correct instability of color in a marking engine. SOLUTION: In the method for calibrating the marking engine including a photoreceptor transfer device having a first area on the surface of the photoreceptor transfer device, the first area receives one color of marking material that is a part of an image, and the photoreceptor transfer device transports the marking material to other transfer device or an output substrate. The method includes a step in which toned patches are arranged in a second area on the photoreceptor transfer device and the second area is positioned on the surface of the photoreceptor transfer device, and the arranged toned patches or images are irradiated, reflectance values for the toned patches or images in accordance with irradiation are measured to obtain the measured reflectance values for the toned patches or images, and color calibration to be used by marking operation is performed on the basis of the measured reflectance values. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：纠正打标机中颜色的不稳定性。 解决方案：在用于校准包括在感光体传送装置的表面上具有第一区域的感光体传送装置的标记引擎的方法中，第一区域接收作为图像的一部分的一种颜色的标记材料， 感光体转印装置将标记材料输送到其它转印装置或输出基板。 该方法包括以下步骤：将调色贴片布置在感光器转移装置的第二区域中，并且将第二区域定位在感光体转印装置的表面上，并且排列调色的贴片或图像被照射，调色剂的反射率值 测量根据照射的贴片或图像以获得调色片或图像的测量反射率值，并且基于测量的反射率值执行通过标记操作使用的颜色校准。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2004094924A

公开(公告)日：2004-03-25

申请号：JP2003194089

申请日：2003-07-09

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： GRACE T BURUUWINTON ,  CREAN PETER A ,  MESTHA LALIT K ,  SKINNER GARY W

IPC: G06F3/12 ,  G06T5/00 ,  H04N1/40 ,  H04N1/405 ,  H04N1/407 ,  H04N1/60

CPC classification number: H04N1/40006 ,  H04N1/4076 ,  H04N1/6097

Abstract: PROBLEM TO BE SOLVED: To provide a method for compensating variation of system performance related to attributes of an image in an image rendering system. SOLUTION: This method includes steps for selecting first and second attributes to change at least one value of the first and second attributes; for rendering a diagnostic image based on the changed value of the combination of the first and second attributes to sense an image quality from the rendered diagnostic image; for calculating image attribute compensation tone reproduction curve data of the first attribute/the second attribute based on the sensed image quality; for storing tone reproduction curve data of the first and second attributes for using them in rendering an image having the changed value of the combination of the first and second attributes; for receiving formation image data for a formation image having the first and second attribute values; and for applying the stored first/second attribute tone reproduction curve data to the received formation image data to generate compensated image data. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2003233237A

公开(公告)日：2003-08-22

申请号：JP2002311993

申请日：2002-10-28

Applicant: XEROX CORP

Inventor： MESTHA LALIT K ,  WANG YAO RONG ,  MIHALYOV KENNETH J

IPC: G01J3/46 ,  G03G15/00 ,  G03G15/01 ,  G06T1/00 ,  H04N1/46 ,  H04N1/60

Abstract: PROBLEM TO BE SOLVED: To form a copy of high quality at a copying process. SOLUTION: A color sensor 324 monitors the output of a color producing process and produces a signal representative of a color produced by the color producing process. The signal can be used as a feedback signal to control the process. Occasionally, the color sensor signal includes a component representing a transient error. A system model 328 of the color producing process is used to predict reasonable sensor signals. A comparison of the sensor signal with the predicted sensor signals is used to determine if the sensor signal is reasonable. If the sensor signal is unreasonable, a substitute signal is used as the feedback signal to the control process. The substitute signal can be a predicted sensor signal or a signal based on historical system performance data. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003035599A

公开(公告)日：2003-02-07

申请号：JP2002116282

申请日：2002-04-18

Applicant: Xerox Corp ,  ゼロックス・コーポレーション

Inventor： TANDON JAGDISH C ,  MESTHA LALIT K ,  HUBBLE FRED F III

IPC: B41J29/46 ,  G01J3/02 ,  G01J3/51 ,  G01J3/52 ,  G03G15/01 ,  H04N1/60

CPC classification number: G01J3/02 ,  G01J3/0208 ,  G01J3/51 ,  G01J3/52 ,  G03G15/01 ,  G03G2215/00063 ,  G03G2215/00067 ,  H04N1/6033

Abstract: PROBLEM TO BE SOLVED: To provide an improved low-cost spectrophotometer suitable for online color printing color control system. SOLUTION: An image forming chip 14 usually forms only a part of a document image forming bar having three rows and three colors used for a scanner, and has at least three different color filters having three rows. A plurality of photo-site chips D12C, D12D, and D12E are corrected to provide a photo-site D12F having no filter. The spectrophotometer has a considerably decreased number of different LEDs or other spectral illumination sources. One of the LEDs and the illumination sources may be white light. The spectrophotometer transmits a large number of spectral data outputs from photo-sites having different filters which are simultaneously illuminated with reflected light from color testing target areas which are sequentially illuminated with the restricted number of LEDs, provides information on broad-band spectra, and enables color control.

Abstract translation: 要解决的问题：提供一种适用于在线彩色打印色彩控制系统的改进型低成本分光光度计。 解决方案：图像形成芯片14通常仅形成具有用于扫描仪的三行和三色的文档图像形成条的一部分，并且具有至少三个具有三行的不同滤色片。 校正多个光点芯片D12C，D12D和D12E，以提供不具有滤光片的光电点D12F。 分光光度计具有相当多的不同的LED或其他光谱照明源的数量。 LED和照明源中的一个可以是白光。 分光光度计从具有不同滤光片的光电点发射大量的光谱数据输出，这些滤光片同时被来自彩色测试目标区域的反射光照射，该区域被受限数量的LED顺序照明，提供关于宽带光谱的信息，并且使能 颜色控制。

公开(公告)号：JP2011061784A

公开(公告)日：2011-03-24

申请号：JP2010198728

申请日：2010-09-06

Applicant: Palo Alto Research Center Inc ,  Xerox Corp ,  ゼロックス コーポレイションXerox Corporation ,  パロ・アルト・リサーチ・センター・インコーポレーテッドPalo Alto Research Center Incorporated

Inventor： LIU JUAN ,  HINDI HAITHAM ,  MESTHA LALIT K ,  MIHALYOV KENNETH J

IPC: H04N1/46 ,  G06T1/00 ,  H04N1/60

CPC classification number: H04N1/6033 ,  H04N1/40006

Abstract: PROBLEM TO BE SOLVED: To provide a characterization method and system suitable for a color image generation device such as a printer or a display.
SOLUTION: For characterization relating to forward color transform from CMYK color space compliant data input to La*b* format device output, a parametric forward color transforming means 125a and a non-parametric forward color transforming means 125b are generated and based on the generated means, a forward color transforming means 125 is constructed. Adaptation is applied to the parametric forward color transforming means 125a to compensate for drifting performance of the color image generation device.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供适用于诸如打印机或显示器的彩色图像生成装置的表征方法和系统。

解决方案：对于从CMYK色彩空间兼容数据输入到La * b *格式设备输出的前向色彩转换的表征，生成参数正向颜色变换装置125a和非参数前向颜色转换装置125b，并基于 生成的装置构成了前向色变换装置125。 适应性被应用于参数正向颜色变换装置125a以补偿彩色图像生成装置的漂移性能。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2006304289A

公开(公告)日：2006-11-02

申请号：JP2006095187

申请日：2006-03-30

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： MESTHA LALIT K ,  LOVE TONYA L ,  HSU TA-CHEN ,  DONALDSON PATRICIA J

IPC: H04N1/46 ,  B41J2/525 ,  H04N1/60

CPC classification number: H04N1/6058 ,  G03G13/01

Abstract: PROBLEM TO BE SOLVED: To enable a user to optionally visualize a polychromatic image with an image visualizing device by expanding, extending, offsetting, shifting, biasing or skewing a color gamut without any problems.
SOLUTION: The polychromatic image or information showing the polychromatic image is acquired (1000). One type is selected automatically or in accordance with a user operation among a plurality of types of CRDs (color rendition dictionaries) stored in the image visualizing device, and a setpoint value is set about a plurality of types of system process parameters in accordance with the selected type (1500). The image visualizing device with the setpoint value set therein visualizes the polychromatic image (1800). Then, the image visualizing device can skew an available color gamut for a particular image visualization job.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了使用户能够通过在没有任何问题的情况下扩展，延伸，偏移，移位，偏置或倾斜色域来可选地使图像可视化装置可视化多色图像。 解决方案：采集多色图像或显示多色图像的信息（1000）。 根据存储在图像可视化装置中的多种类型的CRD（彩色再现字典）中的用户操作自动选择一种类型，并且根据所述图像可视化装置设置关于多种类型的系统处理参数的设定点值 选择类型（1500）。 其中设置了设定值的图像可视化装置可视化多色图像（1800）。 然后，图像可视化装置可以偏斜特定图像可视化作业的可用色域。 版权所有（C）2007，JPO＆INPIT