Method for assessing the quality of a multi-color print image
    1.
    发明授权
    Method for assessing the quality of a multi-color print image 失效
    评估多色打印图像质量的方法

    公开(公告)号:US5947029A

    公开(公告)日:1999-09-07

    申请号:US15161

    申请日:1998-01-29

    摘要: In a process for assessing the quality of a print image produced on a printing material in a multi-color printing process, in which signals which reproduce print-image elements are generated with an image-recording arrangement, in which color values are derived from the signals for every print-image element, in which the color values are transformed into color measures of a predetermined color space, in which color distances between an actual color site and a desired reference color site are determined for the print-image elements, correction variables of the control elements (18, 19, 20, 21), whose effect on a control element (18) would cause the actual color sites to be as close as possible to the reference color sites, are calculated from the color distances and stored in memory, that the color-distance vectors (.DELTA.L.sub.Bn, .DELTA.a.sub.Bn, .DELTA.b.sub.Bn) and color distances (.DELTA.E.sub.Bn) of at least one predetermined reference image (B.sub.n) with homogeneous area coverage are determined as a measure for the quality in the said print-image region, the correction variables (.DELTA.s.sub.B, .DELTA.s.sub.C, .DELTA.s.sub.M, .DELTA.s.sub.Y) which are necessary for compensation of the color distances (.DELTA.E.sub.Bn) in the reference image (B.sub.n) corresponding to the previously calculated and stored correction variables.

    摘要翻译: 在用于评估在多色打印处理中在打印材料上产生的打印图像的质量的过程中,其中以图像记录装置生成再现打印图像元素的信号,其中颜色值从 对于每个打印图像元素的信号,其中颜色值被转换成预定颜色空间的颜色测量值,其中为打印图像元素确定实际颜色位置和期望的参考颜色位置之间的颜色距离,校正变量 的控制元件(18,19,20,21)根据颜色距离计算其对控制元件(18)的影响将导致实际颜色位置尽可能接近参考色彩位置,并存储在 存储器,确定具有均匀面积覆盖的至少一个预定参考图像(Bn)的色距矢量(DELTA LBn,DELTA aBn,DELTA bBn)和色距(DELTA EBn)作为测量 对于所述打印图像区域中的质量,对于对应于所述打印图像区域的参考图像(Bn)中的颜色距离(DELTA EBn)的补偿所需的校正变量(DELTA sB,DELTA sC,DELTA sM,DELTA sY) 先前计算和存储的校正变量。

    Method and device for determining and/or converting color profiles
    2.
    发明授权
    Method and device for determining and/or converting color profiles 有权
    用于确定和/或转换颜色特征的方法和装置

    公开(公告)号:US06615729B2

    公开(公告)日:2003-09-09

    申请号:US09992520

    申请日:2001-11-14

    IPC分类号: G03F308

    CPC分类号: H04N1/6033 G06T11/001

    摘要: A method is proposed for generating a color profile using the determination of a mapping A′ of a device-independent process space Q(m) of dimension m, m being a natural number, to a device-dependent process space K′(n) of dimension n, n being a natural number, for a first set of specific parameters, which is distinguished by the mapping being represented by a concatenation of mappings, which includes a known mapping A from Q(m) to a device-dependent process space K(n) of dimension n, n being a natural number, for another set of specific process parameters, which differs at least in one element from a first set of specific process parameters; and either of a mapping TK from K(n) to K′(n) or a self-mapping TQ by Q(m).

    摘要翻译: 提出了一种用于根据与设备有关的处理空间K'(n)确定尺寸为m的设备无关的处理空间Q(m)为自然数的映射A'来生成颜色简档的方法, 对于第一组特定参数,n是n个自然数,其特征在于映射由映射的级联表示,映射包括从Q(m)到设备相关过程空间的已知映射A 尺寸为n的k(n),n为自然数,用于另一组具体工艺参数,其至少在一个元素与第一组特定工艺参数不同; 以及从K(n)到K'(n)的映射TK或Q(m)的自映射TQ中的任一个。

    Method of obtaining colorimetric values
    3.
    发明授权
    Method of obtaining colorimetric values 有权
    获得比色值的方法

    公开(公告)号:US06469804B1

    公开(公告)日:2002-10-22

    申请号:US09186853

    申请日:1998-11-05

    IPC分类号: B06J100

    摘要: To obtain colorimetric values intended for regulating inking on a printing press (1) from a printed image (3) produced by the printing press (1), the printed image is measured calorimetrically in a plurality of pixels (4) with respect to a selected color coordinate system. The color vectors thus obtained for each pixel (4) are used to calculate color difference vectors to predetermined reference color vectors based on the same color coordinate system or reference color vectors determined from a reference printed sheet (3). The color difference vectors are multiplied by a weighting factor determined from the ink coverage of the pixels (4) and/or the color differences between the pixels (4) and their neighboring pixels (4). The color difference vectors weighted in this way can then be used as colorimetric values for regulating the inking on the printing press (1).

    摘要翻译: 为了获得用于调节从印刷机(1)生产的印刷图像(3)在印刷机(1)上的着色的比色值,印刷图像相对于选定的多个像素(4)在量热测量 颜色坐标系。 这样获得的每个像素(4)的颜色矢量用于基于从参考印张(3)确定的相同颜色坐标系或参考颜色矢量来计算到预定参考颜色矢量的色差矢量。 将色差矢量乘以由像素(4)的墨水覆盖度确定的加权因子和/或像素(4)及其相邻像素(4)之间的色差。 以此方式加权的色差矢量然后可用作调节印刷机(1)上的着墨的比色值。

    Method of determining ink coverage in a print image
    4.
    发明授权
    Method of determining ink coverage in a print image 有权
    确定打印图像中墨水覆盖度的方法

    公开(公告)号:US5967033A

    公开(公告)日:1999-10-19

    申请号:US185122

    申请日:1998-11-03

    CPC分类号: B41F33/0036 G01J3/46

    摘要: For determining the ink coverages of printing inks involved in printing in one pixel of a print image, the pixel is scanned photoelectrically in the visible range of the spectrum and also in the near infrared range. Color coordinates of a perceptually approximately equidistant color system and at least one infrared value are formed from the scanned signals thus obtained. The ink coverages of the printing inks involved in the printing are then calculated from these color coordinates and from the minimum of one infrared value and are allocated to the pixel.

    摘要翻译: 为了确定在打印图像的一个像素中打印涉及的印刷油墨的墨水覆盖率,像素在光谱的可见范围内以及近红外范围内被光电扫描。 从所获得的扫描信号中形成感知上近似等距离的色彩系统和至少一个红外值的色坐标。 然后根据这些颜色坐标和最小的一个红外值计算涉及打印的打印油墨的墨水覆盖率,并将其分配给像素。

    Method controlling ink application in a printing press
    5.
    发明授权
    Method controlling ink application in a printing press 有权
    在印刷机中控制油墨应用的方法

    公开(公告)号:US5957049A

    公开(公告)日:1999-09-28

    申请号:US186858

    申请日:1998-11-05

    CPC分类号: B41F33/0045

    摘要: In order to control ink application in a printing press, a sheet (3) printed by the printing press (1) is colorimetrically measured in a number of pixels (4) with respect to a selected color coordinate system that has been expanded to be four-dimensional by also taking into account an infrared component. Color difference vectors with respect to the desired color vectors, predefined or determined from a reference sheet (3) and referred to the same color coordinate system, are computed from the color vectors obtained for each pixel (4). A sensitivity matrix is determined for each measured pixel (4) of the sheet (3). The pixels (4) are classified by sensitivity class. The color difference vectors and sensitivity matrices of the pixels (4) pertaining to the same sensitivity class are averaged for each sensitivity class, and input parameters, in particular film thickness modification vectors, are computed from the averaged color difference vectors and averaged sensitivity matrices of all sensitivity classes for a control unit (9) of the inking mechanisms of the printing press (1). The inking of the printing press (1) is then controlled on the basis of the input parameters thus computed.

    摘要翻译: 为了控制印刷机中的油墨施加,由印刷机1印刷的纸张3相对于已经扩展为四个的所选颜色坐标系以多个像素(4)进行比色测量 还考虑到红外分量的维度。 根据对于每个像素(4)获得的颜色矢量计算相对于从参考片(3)预定义或由参考片(3)确定并被称为相同颜色坐标系的所需颜色矢量的色差矢量。 对于片材(3)的每个测量像素(4)确定灵敏度矩阵。 像素(4)根据灵敏度等级分类。 对于每个灵敏度类别对相同灵敏度类别的像素(4)的色差矢量和灵敏度矩阵进行平均,并且从平均的色差矢量和平均的灵敏度矩阵计算输入参数,特别是膜厚度修改矢量, 用于印刷机(1)的上墨机构的控制单元(9)的所有灵敏度等级。 然后基于这样计算的输入参数来控制印刷机(1)的着墨。

    Method and device for zonally controlling and regulating inking in a
printing machine
    6.
    发明授权
    Method and device for zonally controlling and regulating inking in a printing machine 失效
    用于在印刷机中分色控制和调节着墨的方法和装置

    公开(公告)号:US5460090A

    公开(公告)日:1995-10-24

    申请号:US158920

    申请日:1993-11-29

    IPC分类号: B41F33/00 B41F31/00 B41M1/00

    摘要: Method for zonally controlling and regulating inking in a printing machine having a plurality of printing units includes photo-electrically measuring, at least at one location of each inking zone, a printed product provided in the printing machine, determining an actual color locus from the measurements, comparing the determined actual color locus with a prescribed setpoint color locus of the respective location and, in the event of a spacing between the compared color loci, calculating corrective control data for inking elements of the printing machine and transmitting the control data to the printing units so as to minimize the spacing between the actual and setpoint color loci, the actual color locus meeting tolerance requirements by lying within a prescribed color tolerance and within a permissible region at a setpoint color locus characterized by an absence of color change; and device for performing the method.

    摘要翻译: 在具有多个印刷单元的印刷机中用于地域控制和调节着墨的方法包括在每个着墨区域的至少一个位置处的光电测量设置在印刷机中的印刷产品,从测量值确定实际的颜色轨迹 将所确定的实际颜色轨迹与相应位置的规定设定点色彩轨迹进行比较,并且在比较色轨之间的间隔的情况下,计算打印机的油墨元件的校正控制数据并将控制数据发送到打印 单元,以便最小化实际颜色轨迹和设定点色座位之间的间距,实际颜色轨迹通过位于规定的颜色容限内并且在由颜色变化不存在的设定点色彩轨迹的允许区域内满足公差要求; 以及用于执行该方法的装置。

    Process for operating a printing press
    7.
    发明授权
    Process for operating a printing press 失效
    印刷机操作流程

    公开(公告)号:US5447102A

    公开(公告)日:1995-09-05

    申请号:US226820

    申请日:1994-04-12

    IPC分类号: B41F33/12 B41F33/16 B41F35/00

    CPC分类号: B41F35/06 B41F33/12 B41F33/16

    摘要: Operation of printing presses can typically require that various printing jobs be performed consecutively, or that is, one printing job may need to be performed immediately after a previous printing job is completed. Such printing operations can preferably be conducted, without a complete shutdown of the press, by providing a transitional, or changeover operation during which the various settings for the printing press can be changed from the previous settings to settings needed for the subsequent printing job.

    摘要翻译: 印刷机的操作通常可能需要连续执行各种打印作业,也可能需要在先前打印作业完成之后立即执行一个打印作业。 这样的打印操作可以通过提供过渡式或转换操作而不使打印机完全关闭而进行,在此过程中,可以将印刷机的各种设置从先前的设置改变为随后的打印作业所需的设置。

    Method of regulating ink-feeding or inking in printing
    8.
    发明授权
    Method of regulating ink-feeding or inking in printing 失效
    在印刷中调节供墨或上墨的方法

    公开(公告)号:US5791251A

    公开(公告)日:1998-08-11

    申请号:US639423

    申请日:1996-04-29

    IPC分类号: B41F33/00 B41F31/00

    CPC分类号: B41F33/0045

    摘要: Method of regulating inking when printing is performed with more than three printing colors, which includes comparing, in a control, actual value color locations derived from a color measuring arrangement with reference value color locations in a given user color space; deriving control signals from the attained comparison values, in accordance with a predetermined relationship, for an inking device containing ink distribution devices which influence the thickness of a layer of printing ink applied zonally in the form of halftone dots or solid full-tone areas to a material to be printed; and further deriving the actual value color locations from measurement locations in the printed image. When printing with n printing colors wherein n is greater than 3, deriving the actual value color locations from measurement locations of at least (n-2) regions, wherein vectors of area coverage of all of the n printing colors involved are, respectively, linearly independent of one another.

    摘要翻译: 用多于三种打印颜色进行打印时调节着墨的方法,其包括在控制中比较从颜色测量装置导出的实际值颜色位置与给定用户颜色空间中的参考值颜色位置的比较; 根据预定的关系,根据所获得的比较值从控制信号中得到控制信号,该墨水装置包含墨水分配装置,该墨水分配装置影响以半色调点或实心全色调区域的形式施加的印刷油墨层的厚度 要印刷的材料; 并从打印图像中的测量位置进一步导出实际值颜色位置。 当以n个大于3的n种印刷颜色打印时,从至少(n-2)个区域的测量位置导出实际值颜色位置,其中所涉及的所有n种印刷色的区域覆盖范围分别是线性的 彼此独立。

    Method for color measurement in printing presses
    9.
    发明授权
    Method for color measurement in printing presses 有权
    印刷机中色彩测量方法

    公开(公告)号:US08887637B2

    公开(公告)日:2014-11-18

    申请号:US11731472

    申请日:2007-03-30

    IPC分类号: B41F33/00

    CPC分类号: B41F33/0036

    摘要: A color measurement on printed materials produced by a printing press is performed by at least a first color measuring device installed in the printing press and at least a second color measuring device. A signal is output by the first color measuring device in the printing press when the measured color values registered on the printing materials are located within a predefined tolerance limit for a predefined period and that, after the signal has been output, a color measurement on one of the printed materials thus produced is performed with the second color measuring device.

    摘要翻译: 由印刷机生产的印刷材料上的颜色测量是通过至少安装在印刷机中的第一颜色测量装置和至少第二颜色测量装置进行的。 当在打印材料上登记的测量的颜色值位于预定义的时间段的预定义的容许限度内时,在印刷机中由第一颜色测量装置输出信号,并且在输出信号之后,在一个 由第二颜色测量装置执行如此生产的印刷材料。