EP2297620A1 - Assistance instrumentale pour la surveillance de la perception de la couleur lors de la réalisation de surfaces à motifs multicolores - Google Patents

Assistance instrumentale pour la surveillance de la perception de la couleur lors de la réalisation de surfaces à motifs multicolores

Info

Publication number
EP2297620A1
EP2297620A1 EP09776971A EP09776971A EP2297620A1 EP 2297620 A1 EP2297620 A1 EP 2297620A1 EP 09776971 A EP09776971 A EP 09776971A EP 09776971 A EP09776971 A EP 09776971A EP 2297620 A1 EP2297620 A1 EP 2297620A1
Authority
EP
European Patent Office
Prior art keywords
decoration
primary
decor
color impression
images
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09776971A
Other languages
German (de)
English (en)
Inventor
Robert Massen
Joerg Eberhardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baumer Inspection GmbH
Original Assignee
Baumer Inspection GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baumer Inspection GmbH filed Critical Baumer Inspection GmbH
Publication of EP2297620A1 publication Critical patent/EP2297620A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • G05B19/41875—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by quality surveillance of production
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/90—Determination of colour characteristics
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/32—Operator till task planning
    • G05B2219/32179—Quality control, monitor production tool with multiple sensors
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/32—Operator till task planning
    • G05B2219/32186—Teaching inspection data, pictures and criteria and apply them for inspection
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/32—Operator till task planning
    • G05B2219/32187—Correlation between controlling parameters for influence on quality parameters
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30108—Industrial image inspection
    • G06T2207/30144—Printing quality
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Definitions

  • Instrument parts support the monitoring of the
  • EP 1 642 098 B1 teaches that the deviation of the visual color impression of multicolored patterned areas from a reference area can be described by simultaneously using both n-channel color statistics (n-channel
  • Color histograms or derived therefrom key figures such as mean values, variances, etc. and the global image sharpness (spatial frequency bandwidth) with the aid of imaging color-capable sensors (color cameras, imaging Spekrometer u.ä) and a corresponding evaluation of the n-channel color images generated by these imagers and displayed become.
  • the primary color impression of, for example, a decorative paper after the printing line is significantly changed by the subsequent process steps of impregnation, the pressing under pressure and temperature compression with the support (fiberboard, etc.), the 3D texturing by embossed patterns.
  • the primary color impression of a panel decorated in direct (analog) printing is changed by the protective layers applied in the subsequent process steps (UV-curing lacquers often mixed with corundum).
  • the produced decoration after the first production step usually the actual printing process, referred to as "primary decor” and the decor after the considered further process steps up to an intermediate product or to the end product as “secondary decor”.
  • EP 1 642 098 B1 can only provide information on the stability of the primary color impression during a specific production job and / or compared to the color impression of primary decor references (non-impregnated decor paper samples, non-resist coated direct printed panels, etc.). ) deliver.
  • the printer does not yet have any information available to what extent the secondary color impression relevant for the final product quality or after further process steps will deviate from the (secondary) references specified by the customer. He is therefore still forced, for example, to remove primary decorative paper samples during a print job, impregnate them in the test laboratory and press with a fibreboard sample, allow to cool and then visually secondary with these secondary decor paper samples
  • analog and digital decor print must be handled similarly cumbersome. It is necessary to wait for the coating process steps subsequent to printing in order to obtain a running sample which can be compared with the customer's reference to the color impression.
  • Such a prediction method could apply directly to the decorating process such as decor paper or decorative foil printing, analog or digital direct printing measurable on the production line descriptive parameters, the primary color printing inform the printer directly whether the current production is still within the tolerances of the secondary Colorimetry without the need for time-consuming preparation of laboratory impregnations and pressings to produce secondary decor samples.
  • Such a prediction method could, purely mathematically, calculate the images of the primary decoration which are not yet physically formed on the decoration process, such as decorative paper printing or decorative film printing, analogue or digital direct printing, which can be scanned on the production line Printer to inform immediately whether the current production is still within the tolerances of the secondary color impression.
  • Such a prediction process would also significantly speed up the process of color matching, ie, the adjustment of the required primary color impression in a new print job to produce a desired secondary color impression, as the pre-calculated, secondary images are continually updated during adjustment of the print engines from the color images taken in the line Color impression determining features like the predicted color statistics and the predicted focus will be displayed, guiding the printer in the process of setting the primary decoration.
  • a) in a first multistage process step as a reference for the primary decoration and the resulting secondary decoration suitable samples are detected with at least one imaging sensor, the image signals are transmitted to a computing unit, from the image signals to the arithmetic unit and methods of image processing Characteristics for the description of the color impression of the decoration of the samples are determined that from the
  • Comparison of the values of the characteristics for the description of the color impression of the primary decoration and the values of the characteristics for the corresponding description of the Color impression of the secondary decoration prediction rules are determined, which translate as closely as possible the feature values for the description of the color impression of the primary decoration in those for the description of the color impression of the secondary decoration and that these prediction rules are stored in a database under the corresponding product
  • the prediction rules Secondary Decor images from Primary Decor calculate images and from these predicted images the characteristics for describing the primary decoration
  • Color impression of the secondary decor is calculated, displayed and compared with the applicable for the secondary decor tolerances.
  • Fig. 1 shows the understanding of the process chain in the production of floor laminates -17-, which consist essentially of a fiberboard -16-, on which at high pressure and temperature impregnated with melamine, in multi-color gravure -12- decorative paper produced -11- by means of a short-cycle or through-press -15- is pressed and the two essential for the control of the visual color impression process stages: decorative paper printing (primary decor) -13- and pressed melamine-impregnated decor (secondary decor) -18 -
  • FIG. 2 illustrates, on the example of a 3-dimensional RGB color histogram -21-, the change in the 3-dimensional color histogram -23- of the primary decoration -17- into the corresponding 3-dimensional one
  • Color histogram -22- of the secondary decoration -13- through the process steps of impregnation with melamine and pressing following the multicolor printing of the primary decor paper. This change can be made mathematically by the
  • Fig. 3 illustrates the current graphical display -31- the stability of the color impression of the primary decor ⁇ CPrimärDekor, plotted against the produced web length -32- and the stability of the by means of the transformation T [PDH (r, g, b)] predicted color impression of Secondary decor ⁇ C secondary decor with the tolerances -33- displayed, which must be observed for the secondary decor.
  • T PDH (r, g, b)] predicted color impression of Secondary decor ⁇ C secondary decor with the tolerances -33- displayed, which must be observed for the secondary decor.
  • the production of decorative paper begins with an unprinted roll of special paper -11-, which is usually printed in a multi-color gravure printing process -12-.
  • this primary decor paper can be inspected directly in the production line by color cameras -13- or visually on the basis of samples taken by the printer to obtain a first statement about the primary color impression.
  • EP 1 642 098 Bl describes by way of example a method according to the prior art for instrumental, metrological detection of the visual primary color impression with the aid of color cameras, in which the combined evaluation of n-dimensional color statistics and / or their characteristics and the sharpness of the Primary decor is measured continuously.
  • the decorative paper is prepared for pressing.
  • a continuous or short-cycle press - 15- is impregnated under high temperature and pressure Decor paper with the actual Tägermaterial -16-, usually a fiberboard, pressed.
  • the inventive idea teaches the changes in the visual color impression between the primary decoration -13- and Predicting the secondary decor -17- by Prediktionsregeln which applied to images of the primary decor already at the observatory -13-, ie immediately on the printing process, the printer about the expected deviations of the visual color impression of the final product, the secondary decor, inform him and thereby make it possible to instantly introduce and evaluate targeted countermeasures without the time-consuming process of laboratory impregnation and laboratory compression.
  • the method according to the invention assumes that the stability of the processes following the primary pressure, in the example the impregnation and the compression, is sufficient to determine sufficiently stable prediction rules on the basis of a small number of samples of the primary and secondary decoration to be able to.
  • the inventive idea also covers the determination and application of prediction rules, which are not only specific to a particular decor, but also specific to a specific setting of the processes subsequent to the printing, for example for certain melamine formulations, certain pressure / temperature / time settings the press etc ..
  • a primary decor sample -13- and the associated secondary decor sample -17- are taken with a 3-channel imager, such as an RGB color camera. These recordings can be made in the production line with appropriately calibrated color cameras at the measuring points -13- and -17- or else on the basis of samples taken with an external image generator, for example an RGB flatbed scanner.
  • a 3-channel imager such as an RGB color camera.
  • At least one color image of the primary decoration -13- and the secondary decoration -17- are transferred to a computing unit (not shown) with which the respective 3-channel color statistics -21- are calculated from these images.
  • Figure 2 shows by way of illustration the 3-dimensional color histogram of the primary decoration and the secondary decoration, shown graphically as two color clouds -23- and -22- in the common ⁇ RED, GREEN, BLUE ⁇ color space -21-. It is easy to see that the color statistics differ: the process of impregnation and compression has caused a change in the position of the respective color clouds in the color space.
  • color histogram implies a 4-dimensional representation, that is to say the determination both of the occurring different color vectors in the camera image of the decoration and the frequency of each occurring color vector.
  • this transformation T is used as a prediction rule in order to continuously determine the color impression characteristics of the ink sheet measured according to the printing process over the produced web length lfm
  • the color impression of the primary decoration changes when the center of gravity of the color histogram of the primary decoration changes in comparison to the center of gravity of the color histogram of a reference of the primary decoration.
  • the scalar magnitude difference ⁇ Cp r i mar decor of the focal points is plotted in Fig. 3 as a graphic -31- the current deviation as a function of the produced web length -32-.
  • This deviation trend line shows the printer immediately how stable his printing process is and thus how stable the color impression of the primary decoration is.
  • the printer can not judge from this the decisive tolerance of the fluctuations of the color impression of the secondary decoration for the customer.
  • the continuous measurement of the primary decoration he has no reliable information about the quality and tolerance of the final product produced, the secondary decoration.
  • the inventive method is also able to come to a much faster when entering a new production order, the so-called.
  • Color Matching as according to the, characterized by numerous sampling and laboratory impregnation and -pressions procedure according to the prior art.
  • the concept of the invention is of course not limited to the color impression feature "color histogram" and its key figures such as center of gravity, variance, etc., but relates to all relevant to the visual impression, from a n-channel image of the decor measurable color impression-Mermale such as image sharpness, contrast Sensitivity functions, etc. (See, for example, M. Fairchild: Color Appearance Models, 2nd edition, 2005, John Wiley & Sons Ltd. for a listing of the so-called CIECAM features for assessing the color impression).
  • Essential for the inventive concept is the prediction of the color impression of the final product (of the secondary decoration) by transformation of the print line measurable color impression of the primary decor with the help of inventively created prediction rule and the display of these predicted color impression features on the
  • the concept of the invention encompasses all decorated surfaces and all decorative methods suitable for this purpose, from classical multicolor gravure printing or offset printing via digital ink jet printing and other decoration methods such as overspraying, lamination of rolled-out colored plastic materials, etc.
  • the inventive method is useful not only during the current production of a decoration, but also during the setting of a new decoration, the so-called. Color matching.
  • the method according to the invention also makes it possible to decorate at any process locations
  • Color impression features for the so-called primary decor to measure and convert these features into those that apply to a secondary decor.
  • the primary decor can represent the print made decor on the neutral decor paper and the secondary decor the decor after impregnation.
  • Essential to the inventive idea is the concept of the creation of prediction rules based on samples of a primary and a secondary decor and the application of these prediction rules in the test phase to early, i.e.. at the site of the primary decoration already to predict the quality of the secondary decoration.
  • the method can also be used in the classic magazine, book and packaging printing, in which the printed product by further processes such as protective coating, paint finish, embossing, etc. after the actual multi-color printing is further changed.
  • the process is limited to multi-color patterned elements such as color photographs, multicolor textures, etc., and monochrome text elements are hidden.
  • n-channel images of the primary decoration are continuously recorded on the printing line, extracted therefrom color impression features and converted using the prediction rules in the color impression characteristics of the secondary decor, displayed and provided with tolerances.
  • the process represents a considerable time saving and increase in productivity, since the deviations from the required final quality of the end product can already be represented directly on the printing process, interpreted accordingly by the printer, and thus early countermeasures can be taken.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Automation & Control Theory (AREA)
  • Image Processing (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

La qualité finale de la perception visuelle de la couleur de surfaces à motifs multicolores, telles que des panneaux de meuble décorés, des revêtements de sol stratifiés décorés, des panneaux muraux etc. ne peut pas être évaluée lors de l'étape de décoration même, réalisée essentiellement grâce à des processus d'impression, ce que l'on appelle le décor primaire, du fait que les processus suivants, tels que l'imprégnation et le pressage, l'application d'une couche de laque de protection, entre autres, modifient encore la perception de la couleur du décor dit secondaire. Par conséquent, pour de tels produits, la surveillance continue du processus d'impression ne permet pas de fournir en continu à l'imprimante des informations sur la qualité, obtenue via la technique d'impression, de la perception de la couleur du produit final ou de la perception de la couleur après une autre étape de traitement. Selon l'invention, au cours d'une phase d'apprentissage, on détermine pour chaque décor, à l'aide d'échantillons du décor primaire et d'échantillons du décor secondaire, des règles de prédiction afin de déterminer des caractéristiques de perception de la couleur à partir d'images à n canaux des échantillons du décor primaire et afin de convertir par calcul ces caractéristiques en caractéristiques de perception de la couleur pour le décor secondaire (prédiction directe) ou afin de calculer, à partir des images à n canaux des échantillons du décor primaire, des images du décor secondaire et afin de calculer à partir de celles-ci des caractéristiques de perception de la couleur (prédiction indirecte).
EP09776971A 2008-07-06 2009-07-06 Assistance instrumentale pour la surveillance de la perception de la couleur lors de la réalisation de surfaces à motifs multicolores Withdrawn EP2297620A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008031459A DE102008031459A1 (de) 2008-07-06 2008-07-06 Instrumentelle Unterstützung der Überwachung des Farbeindrucks bei der Herstellung von mehrfarbig gemusterten Flächen
PCT/EP2009/004860 WO2010003607A1 (fr) 2008-07-06 2009-07-06 Assistance instrumentale pour la surveillance de la perception de la couleur lors de la réalisation de surfaces à motifs multicolores

Publications (1)

Publication Number Publication Date
EP2297620A1 true EP2297620A1 (fr) 2011-03-23

Family

ID=40947592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09776971A Withdrawn EP2297620A1 (fr) 2008-07-06 2009-07-06 Assistance instrumentale pour la surveillance de la perception de la couleur lors de la réalisation de surfaces à motifs multicolores

Country Status (6)

Country Link
US (1) US20110206242A1 (fr)
EP (1) EP2297620A1 (fr)
JP (1) JP2011527017A (fr)
CN (1) CN102084308A (fr)
DE (1) DE102008031459A1 (fr)
WO (1) WO2010003607A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013104208B3 (de) * 2013-04-25 2014-10-16 Windmöller & Hölscher Kg Verfahren zur Farbeinstellung
CN104568154B (zh) * 2014-12-25 2016-08-24 北京凌云光技术有限责任公司 印刷品颜色质量检测方法及系统
DE102016203529A1 (de) * 2016-03-03 2017-09-07 Koenig & Bauer Ag Verfahren und Vorrichtung zum Herstellen eines Dekorsubstrates, Verfahren zur Herstellung eines Laminats sowie Stoffgemisch zur Vorbehandlung eines zu bedruckenden Bedruckstoffs
IT201700075495A1 (it) * 2017-07-05 2019-01-05 Sacmi Metodo e impianto per la realizzazione di prodotti ceramici
DE102017215373A1 (de) 2017-09-01 2019-03-07 Koenig & Bauer Ag Stoffgemisch für ein Precoating von Dekorpapieren sowie Verfahren zur Herstellung bedruckten Dekorpapiers in einer Druckmaschine
HUE052890T2 (hu) * 2018-06-06 2021-05-28 Flooring Technologies Ltd Eljárás hordozóanyagokon lévõ dekornyomatok online minõségellenõrzésére
ES3060627T3 (en) * 2020-02-20 2026-03-27 Flooring Technologies Ltd Method for transferring analog templates to a decor print

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4335350A1 (de) * 1993-10-16 1995-04-20 Heidelberger Druckmasch Ag Verfahren und Vorrichtung zur Ermittlung von Passerabweichungen bei mehrfarbigen, in einer Druckmaschine erstellten Druckprodukten
DE10163596C1 (de) * 2001-12-21 2003-09-18 Rehau Ag & Co Verfahren zur mobilen On- und Offlinekontrolle farbiger und hochglänzender Automobilteiloberflächen
US6904330B2 (en) * 2002-08-07 2005-06-07 Kimberly-Clark Worldwide, Inc. Manufacturing information and troubleshooting system and method
DE10328322A1 (de) 2003-06-24 2005-01-27 Massen Machine Vision Systems Gmbh Überwachung des Farbeindrucks von mehrfarbig gemusterten Produkten
DE10336111A1 (de) * 2003-08-06 2005-03-03 List, Reinhard Dr. Dr. H.C. Verfahren und Anordnung zur Herstellung eines mehrteiligen Produktes mit optimiertem Erscheinungsbild
EP1751628A4 (fr) * 2004-05-20 2007-12-05 Univ Mcmaster Procede pour commander l'aspect de produits et la performance de traitement par analyse d'images

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010003607A1 *

Also Published As

Publication number Publication date
WO2010003607A1 (fr) 2010-01-14
CN102084308A (zh) 2011-06-01
JP2011527017A (ja) 2011-10-20
DE102008031459A1 (de) 2010-01-07
US20110206242A1 (en) 2011-08-25

Similar Documents

Publication Publication Date Title
EP3578939B1 (fr) Procédé de contrôle de qualité en ligne de l'impression de décors sur des matériaux supports
EP2297620A1 (fr) Assistance instrumentale pour la surveillance de la perception de la couleur lors de la réalisation de surfaces à motifs multicolores
EP4107001B1 (fr) Procédé d'adoption des modèles analogiques dans l'impression de décors
DE102008016538A1 (de) Überwachung der visuellen Qualität von in Druckprodukten eingebetteten Farbbildern
EP4315821B1 (fr) Procédé d'ajustement des paramètres d'imprimante d'une imprimante numérique
EP3896953B1 (fr) Procédé de commande d'un processus d'impression décorative
DE19632969A1 (de) Verfahren zur Ermittlung von Vorgabewerten für die Steuerung einer Druckmaschine
EP2233286B1 (fr) Procédé de fabrication de corps de plaques dotés de feuilles imprimées
WO2024156674A1 (fr) Procédé de surveillance en ligne du mode de fonctionnement d'au moins une tête d'impression
EP3972233B1 (fr) Procédé de caractérisation automatisée d'un système d'impression en continu
EP2233287B1 (fr) Procédé de fabrication de corps de plaques dotés de feuilles imprimées selon le procédé d'impression en creux
DE19749064A1 (de) Verfahren zur Ermittlung von Farbwertgradienten
EP1033247B1 (fr) Procédé de controle de l'encrage dans une machine à imprimer
EP3790267B1 (fr) Procédé d'élaboration automatique de cartes de couleurs
EP4470200B1 (fr) Procédé d'impression d'une bande en papier
DE19908296A1 (de) Verfahren zur Steuerung der Farbgebung einer Druckmaschine
EP2018272A1 (fr) Procédé et dispositif d'impression d'un substrat
EP4430821A1 (fr) Procédé de correction d'une propriété de reproduction de couleur d'une image numérique spécifiée pour une impression à l'épreuve et/ou une impression de production

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20101116

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: AL BA RS

17Q First examination report despatched

Effective date: 20110830

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140909