公开(公告)号：JP2008037104A

公开(公告)日：2008-02-21

申请号：JP2007198481

申请日：2007-07-31

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

Inventor： MCELVAIN JON S ,  HAINS CHARLES M

IPC: B41F33/14

CPC classification number: H04N1/506

Abstract: PROBLEM TO BE SOLVED: To provide a system and method for characterizing the spatial variance of a color separation misregistration by using a method contributing to a real time measurement by a low resolution scanning technique.
SOLUTION: A processor assembly 404 includes a calibration module 408 which decides the characteristic of a curve which corresponds to a calibration patch attached with a mark among two or more calibration patches and is related with a measured colorimetry value, generates a calibration function based on the characteristic of the curve, and provides an anticipated colorimetry value about a predetermined color separation structure relating with a misregistration characteristic value. In addition, the processor assembly 404 includes a measurement patch analyzer module 410 which decides the misregistration characteristic value corresponding to the measured colorimetry value corresponding to the measurement patch attached with a mark from a calibration function, and characterizes the misregistration of a first color separation to that of a second color separation.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种通过使用有助于通过低分辨率扫描技术进行实时测量的方法来表征颜色分离重合失调的空间方差的系统和方法。 解决方案：处理器组件404包括校准模块408，其校准曲线的特性，该曲线对应于在两个或更多个校准片之间附加有标记的校准片，并且与测量的比色值相关，产生校准函数 基于曲线的特性，并且提供关于与不对准特性值相关的预定颜色分离结构的预期比色值。 此外，处理器组件404包括测量贴片分析器模块410，该测量贴片分析器模块410根据与来自校准功能的附加标记的测量贴片相对应的测量的比色值来确定对准特征值，并且表征第一颜色分离的对准 第二色分离。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2004056800A

公开(公告)日：2004-02-19

申请号：JP2003194088

申请日：2003-07-09

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

Inventor： HAINS CHARLES M

IPC: B41J2/52 ,  G03F5/00 ,  H04N1/405

CPC classification number: H04N1/4058

Abstract: PROBLEM TO BE SOLVED: To obtain a screen which has much more threshold levels to achieve a more excellent visible angle.
SOLUTION: The method for designing a halftone/screen having rectangular zero shift / super cell includes steps of: selecting a desired angle between a first reference frame and a second reference frame; selecting a desired length to a first lateral side in a pair of lateral sides of a non-rectangular super cell in the first reference frame; determining a value corresponding to a polynomial side length to the first lateral side in the pair of lateral sides of the non-rectangular super cell in the first reference frame; selecting a real side length to a second lateral side based upon a determined polynomial side length of the second lateral side such that the number of centers in the rectangular zero shift / halftone / super cell becomes integral; and determining the number of centers in the rectangular zero shift / halftone / super cell based upon the side lengths of the first and second lateral sides of the non-rectangular super cell.
COPYRIGHT: (C)2004,JPO

公开(公告)号：JPH10285402A

公开(公告)日：1998-10-23

申请号：JP5662698

申请日：1998-03-09

Applicant: XEROX CORP

Inventor： HAINS CHARLES M

IPC: B41J2/52 ,  G06T5/00 ,  H04N1/405

Abstract: PROBLEM TO BE SOLVED: To generate tint dots through the combination of two threshold array and a small look-up table to generate halftone dots that are not grow monotonously. SOLUTION: A memory 52 stores values for two threshold arrays. A digital input from a generator 54 that provides an output of a desired toner converage or a function of a density of a current pixel is applied to a look-up table 51, where which of the two arrays is to be used is discriminated and from which an address bit is outputted to the memory 52. A current pixel address in the memory 52 is given to the memory 52 as a remainder address of addressing by a Holady's address generator 55, and output from the memory 52 is a digital threshold level, which is given to a comparator 53, where it is compared with the image input and from which '1' or '0' bit is outputted.