公开(公告)号：EP4404551A1

公开(公告)日：2024-07-24

申请号：EP23152886.0

申请日：2023-01-23

申请人： Improve Process Analytics and Control GmbH

发明人： Bergmann, Bernd

IPC分类号： H04N1/401 ,  H04N1/60

CPC分类号： H04N1/6036 ,  H04N1/4015

摘要： Die Erfindung betrifft ein Verfahren zur Inline-Überwachung der Funktionsweise von mindestens einem Druckkopf, bei dem ein zu druckendes Design als Ausgangsbilddatei in einem Ausgangsfarbraum bereitgestellt wird, bei dem die Ausgangsbilddatei von einem Farbmanagementsystem mit einem Eingabeprofil in einen L∗a∗b∗-Farbraum transferiert und eine L*a*b*-Bilddatei erzeugt wird, bei dem die L*a*b*-Bilddatei (aus dem L∗a∗b∗-Farbraum) mit einem Ausgabeprofil in einen für den Drucker anwendbaren Druckfarbraum transferiert und eine Druckbilddatei erzeugt wird, bei dem das Design von einem Drucker mit mindestens einem Druckkopf auf der Basis der Druckbilddatei auf einem Trägermaterial in einem aus quer zur Druckrichtung verlaufenden Zeilen und aus in Druckrichtung verlaufenden Spalten bestehenden Raster aus Pixeln aus mindestens einer Druckfarbe gedruckt wird, bei dem das Druckbild, zumindest abschnittsweise, mit einem optischen Messsystem mit einer räumlichen Auflösung im Bereich weniger Pixel, insbesondere mit einer räumlichen Auflösung von einem Pixel, in Druckrichtung zeilenweise vermessen und eine aus Zeilen und Spalten bestehende Messbilddatei erzeugt wird, bei dem die Messbilddatei in eine L*a*b*-Messbilddatei transferiert wird, bei dem die L*a*b*-Messbilddatei mit dem Ausgabeprofil in den Druckfarbraum transferiert und eine Vergleichsbilddatei erzeugt wird, bei dem die Vergleichsbilddatei und eine vorgegebene Referenzbilddatei zueinander registriert werden, bei dem eine Differenzbilddatei aus der Vergleichsbilddatei und der Referenzbilddatei erzeugt wird, bei dem die Differenzwerte der Differenzbilddatei zeilenweise ermittelt werden und bei dem dann, wenn die Beträge der Differenzwerte einen vorgegebenen Schwellenwert überschreiten, eine Fehlfunktion des den abweichenden Pixeln zugeordneten Druckkopfes ermittelt wird.

公开(公告)号：EP2360908B1

公开(公告)日：2017-11-22

申请号：EP11250071.5

申请日：2011-01-24

申请人： Brother Kogyo Kabushiki Kaisha

发明人： Suzuki, Nobuhiko

IPC分类号： H04N1/401

CPC分类号： H04N1/4015 ,  H04N1/00045 ,  H04N1/00082 ,  H04N1/233 ,  H04N1/2338 ,  H04N2201/04722

摘要： An image forming system is provided. The image forming system includes an image forming apparatus configured to form a mark for detecting at least one of a position deviation and a density deviation and obtains a correction amount by detecting the mark, the image forming system comprising: an identification unit configured to identify an image characteristic of an image to be printed according to at least one of a positional relationship between colors, a gradation distribution and a resolution, and a selecting unit configured to select a choice from multiple choices containing at least two choices of: only position deviation; only density deviation; and both position deviation and density deviation, according to the image characteristic identified by the identification unit, wherein the image forming apparatus is configured to form the mark for obtaining the correction amount according to the choice selected by the selecting unit.

公开(公告)号：EP2369419A3

公开(公告)日：2016-03-30

申请号：EP11157320.0

申请日：2011-03-08

申请人： Konica Minolta Business Technologies, Inc.

发明人： Sakatani, Kazuomi

IPC分类号： G03G15/00 ,  H04N1/407 ,  H04N1/60

CPC分类号： G03G15/5062 ,  H04N1/4015 ,  H04N1/4078 ,  H04N1/6041

摘要： An image forming apparatus including: an image forming section which forms a belt-shaped pattern having a specific gradation and a prescribed length extending in a main-scanning direction; and a control section which receives pieces of density information each of which indicates a density of the belt-shaped pattern at a measurement position of measurement positions; detects a minimum density from the pieces of density information; sets the minimum density as a target density; identifies a first error between the target density and each of densities respectively indicated by the pieces of density information; sets a gradation correction amount at each of the measurement positions, respectively corresponding to the pieces of density information, based on the respective first errors; and corrects a gradation of image data based on the gradation correction amounts, wherein the image forming section forms an image based on the image data of which the gradation is corrected.

公开(公告)号：EP2987641A1

公开(公告)日：2016-02-24

申请号：EP14785739.5

申请日：2014-04-15

申请人： Konica Minolta, Inc.

发明人： TAKAGI, Kiyoshi ,  HIRAMOTO, Kenichirou

IPC分类号： B41J2/52 ,  B41J2/01 ,  B41J2/205 ,  B41J2/525 ,  B41J5/30 ,  H04N1/46 ,  H04N1/60

CPC分类号： B41J2/2103 ,  B41J2/01 ,  B41J2/205 ,  B41J2/52 ,  B41J2/525 ,  B41J5/30 ,  H04N1/4015 ,  H04N1/46 ,  H04N1/60

摘要： The color-processing unit is provided with: a reference data storage unit for storing reference data (D) in which multiple reference values, which are selected in a specified range of gradations from a minimum color value to a maximum color value for a specified color and correspond to multiple representative color values that number less than the specified number of gradations, are individually set for each of multiple representative nozzles, which are selected from a specified number of at least three nozzles (N) and number less than the specified number; a counter and a nozzle-specifying unit for specifying nozzles (N) that correspond to input values; a representative nozzle-specifying unit for specifying representative nozzles corresponding to the specified nozzles (N); a representative color value-specifying unit for specifying representative color values corresponding to the color values indicated by the input values; and a calculating unit for acquiring reference values corresponding to the combinations of specified representative nozzles and representative color values individually from the reference data storage unit and calculating output values corresponding to the input values by interpolation using the acquired reference values.

摘要翻译： 颜色处理单元设置有：参考数据存储单元，用于存储参考数据（D），其中在指定的渐变范围内从指定颜色的最小颜色值到最大颜色值中选择多个参考值 对应于指定数量的等级的多个代表性颜色值，对于从指定数量的至少三个喷嘴（N）和小于指定数量的数量中选择的多个代表性喷嘴中的每一个分别设置; 用于指定对应于输入值的喷嘴（N）的计数器和喷嘴指定单元; 用于指定与特定喷嘴（N）对应的代表性喷嘴的代表性喷嘴指定单元; 代表颜色值指定单元，用于指定与由输入值指示的颜色值对应的代表性颜色值; 以及计算单元，用于从参考数据存储单元中分别获取与指定的代表性喷嘴和代表性颜色的组合相对应的参考值，并且通过使用获取的参考值通过插值来计算与输入值相对应的输出值。

公开(公告)号：EP1734736A3

公开(公告)日：2010-08-25

申请号：EP06113612.3

申请日：2006-05-08

申请人： Xerox Corporation

发明人： Mantell, David A. ,  Kroon, Stephen M.

IPC分类号： H04N1/401 ,  B41J2/21

CPC分类号： B41J2/2139 ,  H04N1/4015

摘要： A method of modifying a single color bi level bitmap including selecting a marked pixel, determining whether the selected marked pixel is in a half-toned uniform region, marking a first unmarked pixel of a first sequence of potential destination pixel locations if the selected marked pixel is in a half-toned uniform region, marking a first unmarked pixel of a second sequence of potential destination pixel locations if the selected marked pixel is not in a half-toned uniform region, and wherein the second sequence of potential destination pixel locations is different from the first sequence of potential destination pixel locations.

公开(公告)号：EP1790479B1

公开(公告)日：2009-09-16

申请号：EP06123146.0

申请日：2006-10-30

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Vladislav, Terekhov ,  Kang, Ki-min 506-204 Hansolmaeul Jugong 5-danji Ap

IPC分类号： B41J2/165 ,  H04N1/41

CPC分类号： B41J2/2139 ,  H04N1/4015 ,  H04N1/405

公开(公告)号：EP0850769B1

公开(公告)日：2007-12-05

申请号：EP97122453.0

申请日：1997-12-18

申请人： Oki Data Corporation

发明人： Kamimura, Katsuya, c/o Oki Data Corporation

IPC分类号： B41J2/447 ,  G06K15/12

CPC分类号： H04N1/4005 ,  B41J2/45 ,  G06K15/1247 ,  H04N1/40031 ,  H04N1/4015

公开(公告)号：EP1790479A2

公开(公告)日：2007-05-30

申请号：EP06123146.0

申请日：2006-10-30

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Vladislav, Terekhov ,  Kang, Ki-min 506-204 Hansolmaeul Jugong 5-danji Ap

IPC分类号： B41J2/165 ,  H04N1/41

CPC分类号： B41J2/2139 ,  H04N1/4015 ,  H04N1/405

摘要： Provided are a method and apparatus for compensating for the degradation of a print image due to a malfunctioning nozzle that irregularly ejects ink. The method includes detecting a malfunctioning nozzle among nozzles installed in an inkjet image forming apparatus and increasing a dithering threshold of an adjacent position to a compensation position printed by the detected malfunctioning nozzle. The method adjusts a dithering threshold of a print position of the malfunctioning nozzle or a dithering threshold of an adjacent print position, and thus performs a halftoning transaction and prints an image. Accordingly, the degradation of print quality such as a visible white band can be prevented and the lifetime of the printhead can be lengthened.

摘要翻译： 提供了一种用于补偿由不规则地喷射墨水的故障喷嘴引起的打印图像的退化的方法和装置。 该方法包括检测安装在喷墨成像设备中的喷嘴中的故障喷嘴并且将相邻位置的抖动阈值增加到由检测到的故障喷嘴打印的补偿位置。 该方法调整故障喷嘴的打印位置的抖动阈值或相邻打印位置的抖动阈值，从而执行半色调处理并打印图像。 因此，可以防止诸如可见白色带的打印质量的下降，并且可以延长打印头的寿命。

公开(公告)号：EP1722278A2

公开(公告)日：2006-11-15

申请号：EP06113478.9

申请日：2006-05-04

申请人： Xerox Corporation

发明人： Mashtare, Dale R

IPC分类号： G03G15/00 ,  G06K15/12 ,  H04N1/401

CPC分类号： H04N1/00002 ,  G03G15/5037 ,  H04N1/00015 ,  H04N1/00034 ,  H04N1/00047 ,  H04N1/0005 ,  H04N1/00063 ,  H04N1/00074 ,  H04N1/00084 ,  H04N1/4015

摘要： For an automatic image diagnosis, toned images or residual toner existing on the photoconductive surface (17) of a photoreceptor (16) may be scanned with light energy provided by the raster scanning system (11). The light energy, which may be reflected from the photoreceptor surface, may be disturbed due to scattering/absorption in toned or damaged surface regions. The light energy may be directed to image sensors (18,21) to obtain a spatial image map of the photoreceptor surface in conjunction with pixel clock information present for the raster scanning system. The evaluation may be made based on the spatial image map. Diagnostic and maintenance may then be applied to correct the defect and/or adjust a tone level for a latent image formed on the photoreceptor surface.

摘要翻译： 对于自动图像诊断，可以利用由光栅扫描系统（11）提供的光能扫描存在于感光体（16）的光导表面（17）上的调色图像或残留调色剂。 可能由感光体表面反射的光能由于在调色或损坏的表面区域中的散射/吸收而受到干扰。 光能可以被引导到图像传感器（18,21），以结合存在于光栅扫描系统的像素时钟信息来获得感光体表面的空间图像映射。 可以基于空间图像映射来进行评估。 然后可以应用诊断和维护来校正缺陷和/或调整在感光体表面上形成的潜像的色调水平。

公开(公告)号：EP1094950B1

公开(公告)日：2006-11-02

申请号：EP00917829.4

申请日：2000-03-10

申请人： Kodak Plychrome Graphics GmbH

发明人： MOULIN, Michel

IPC分类号： B41J2/447

CPC分类号： H04N1/121 ,  G03F7/2055 ,  G03F7/2057 ,  G06K15/1238 ,  G06K15/1271 ,  H04N1/4015

摘要： A laser imager comprises a modulator with an array of electrodes to control picture elements individually or by groups to produce images on a recording plane. The light intensity of each picture element or group of elements is determined by electrical potential applied between sets of controlling electrodes. These levels can be manually set or automatically exercised during a balancing routine through a feed-back loop using a photodetector to monitor and detect elements producing a light intensity higher than a set value. Control means assign to these elements a "correction voltage" to lower the density of elements they control. These correction values obtained after one or repeated balancing routines are stored in a memory and are used during the imaging cycle to produce images of substantially equal intensity on the recording medium. Different electrode arrangements to control the intensity of picture elements can be applied to different kinds of modulators and for different power levels of radiated energy.