EP2985150B1 - Procédé et système pour la correction de couleur dans des travaux d'impression effectués dans une machine d'impression - Google Patents

Procédé et système pour la correction de couleur dans des travaux d'impression effectués dans une machine d'impression Download PDF

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Publication number
EP2985150B1
EP2985150B1 EP14380023.3A EP14380023A EP2985150B1 EP 2985150 B1 EP2985150 B1 EP 2985150B1 EP 14380023 A EP14380023 A EP 14380023A EP 2985150 B1 EP2985150 B1 EP 2985150B1
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Prior art keywords
ink
printing
color
initially mixed
inks
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EP14380023.3A
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German (de)
English (en)
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EP2985150A1 (fr
Inventor
Jordi PUIG VILÀ
Jordi SOLÀ FERRÉS
Miquel MARCÓ PADROSA
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Comexi Group Industries SA
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Comexi Group Industries SA
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Priority to ES14380023.3T priority patent/ES2631329T3/es
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/005—Ink viscosity control means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices

Definitions

  • the present invention relates to the field of printing machines provided with a plurality of printing groups, each fed by an ink with a certain specific composition obtained from mixing pigments or dyes and liquids, and precisely regulating the composition of said ink for obtaining color for printing on a substrate by means of an initial printing step with an initially mixed ink, and a final printing step with a corrected ink obtained from the initially mixed ink corrected by means of amounts of corrective ink.
  • Assigning a target color to printing performed on a substrate, calculating the amounts of first basic inks that must be mixed to obtain an initially mixed ink that allows printing said target color with few color deviations with respect to said target color, and then dispensing said calculated amounts of first basic inks by means of a first ink preparation and dispensing unit are known in the state of the art in the field of printing machines, said first unit being a static unit suitable for serving, simultaneously or successively, one or several printing machines each provided with one or several printing groups.
  • Document DE 20105481U1 discloses a device and method of the type described above, in which an initial ink mixture created by an initial first ink mixer is provided to a printing machine printing a sample. Sensors obtain color values that are compared with reference values, detecting deviations, and a second ink mixer different from the initial ink mixer generating a corrective ink which is added to the initial ink mixture.
  • Document WO2007110764A2 describes an automatic ink mixture dispenser arranged in a moving carriage with wheels which can be moved to any desired location by a user.
  • Document EP2219870 (Windmöller) describes an ink color correction system in which a first ink mixing device generates an initial mixture which is supplied to at least one printing machine, and a second ink supplying device generates a corrective ink mixture which can be mixed with the first ink mixture to correct color deviations in the print color detected by means of optical sensors.
  • Document DE102007059176 also describes a similar system, including a viscosity sensors in order to assure that the corrected ink has the same viscosity than the initial ink.
  • the present invention relates to a method and system for obtaining a corrected ink which allows printing by means of a printing machine, minimizing color deviations with respect to color values of target colors established as the colors to be obtained.
  • Said target colors can be included in a prepress digital file accessible throughout the proposed method or be in the form of a physical sample, or in the form of a reference to a colorimetric value of a defined and known scale, such as Pantone colors, for example.
  • One and the same ink can produce different print colors or different tones of said color, depending on parameters such as the thickness of the layer of ink deposited, the degree of absorption of the printing substrate, the size of the printing dot, etc. These and other parameters may be affected depending on the temperature and viscosity of the ink used during printing, so regulating these parameters is relevant for obtaining a specific color.
  • colors refer to any visible color tone in any degree of saturation obtained from mixing or combining the pigment bases or inks described above.
  • the target color is a pre-established reference color to be obtained as the result of the final printing.
  • the first basic inks are those separately stored inks intended for being used directly in a printing machine or for being mixed to obtain initially mixed inks, which have colors different from the colors of the first basic inks.
  • the initial print color is the color obtained from printing with at least one printing group of a printing machine provided with an initially mixed ink.
  • the second basic inks are those separately stored inks intended for being used directly or for being mixed to the initially mixed inks, obtaining corrected inks.
  • the second basic inks can be mixed with one another before being mixed with the initially mixed inks, resulting in corrective inks.
  • the system can also have:
  • This system allows supplying initially mixed inks to one or to a plurality of printing machines and knowing the value of these physical variables relating to the initially mixed ink used in each printing group during initial printing by means of temperature sensors, and it also allows altering the temperature of the corrected ink, or of the second basic inks, or of the corrective ink, so that said corrected ink maintains the same temperature as the initially mixed ink.
  • this color correction method further comprises the following additional steps:
  • Step i) allows modifying the physical properties of the corrective ink relating to temperature to make mixing it with the initially mixed ink easier in a quicker and more uniform manner, and to assure that the resulting color is the desired color.
  • the heating and/or cooling device controlled by the control device allows individually heating or cooling the second basic inks, or the dispensed amounts of the second basic inks, or the corrective ink, or the corrected ink, so that their temperature is increased or reduced and their viscosity altered.
  • the method further comprises:
  • the solvent preferably a colorless solvent, can be metered into the corrected ink or corrective ink to reduce viscosity thereof.
  • first target colors which can be included for example along with other information relating to the document to be printed, such as the shape, size, motifs to be printed, etc..., are provided to the control device in a prepress digital file.
  • An initially mixed ink with color values close or equal to the color values of the target color is then provided to at least one printing group of at least one printing machine.
  • Initial printing is then performed with said initially mixed inks on a printing support, one or several initial print colors thus being obtained.
  • Values relating to the color qualities of each analyzed initial print color are obtained by means of an optical sensor arranged in the printing machine.
  • Said obtained color values are then compared with the color values of the target colors. As a result of said comparison, possible color deviations between both values are detected, and the precise amounts of second basic inks necessary for obtaining a corrected ink capable of print colors with minimized color deviations are calculated.
  • the calculated amount of second basic inks is precisely added, respectively, to each initially mixed ink of each printing group.
  • a sensor will be provided for sensing the dispensed amount of ink that will consist, for example, of a scale which can measure both the weight gain of the dispensed ink collection container, and the weight loss of the stored amounts of second basic inks upon extracting an amount of ink therefrom.
  • This step can be performed manually by an operator or automatically.
  • the control device also has data relating to the temperature and additionally also relating to the viscosity of the initially mixed ink used for initial printing as a result of sensors installed in the printing machine, and data relating to the temperature and additionally also relating to the viscosity of the corrective ink as a result of sensors arranged in the second ink unit. With that information the control device regulates the temperature of the corrective ink and additionally also the amount of solvent, such that they have a viscosity and temperature that are substantially equal or with a predetermined difference, with respect to the initially mixed ink used in initial printing.
  • Said temperature and/or viscosity adjustment is achieved by means of an adjustable heating and/or cooling device and additionally also by means of adding colorless solvents.
  • Temperature alteration can affect the viscosity of the ink, and both the viscosity and the temperature can affect the final print color of an ink, since they can modify ink absorption by the substrate or can affect the thickness of the layer of ink deposited on said substrate, or even the size of the printing dot. All these parameters will affect color and must therefore be considered when performing color corrections.
  • This method allows obtaining a corrected ink that provides printing with minimized color deviations with respect to target colors and without altering the viscosity and/or temperature characteristics of the initially mixed ink arranged in the printing machine upon adding thereto the corrective ink or the amounts of second basic inks, achieving better homogenization and increasing reliability and precision in color correction, and therefore in obtaining the target color.
  • the printing machines in which this system and method are implemented can be a central drum type printing machine, for example an offset-, flexographic-, rotogravure-type printing machine.
  • the initially mixed ink can be obtained from mixing different first basic inks, for example in a first ink preparation and/or dispensing unit capable of serving initially mixed inks to a plurality of printing machines, for example.
  • a control device can have the color information of the target color or colors, whereby the amounts of first basic inks necessary for preparing the initially mixed inks can be calculated.
  • the mentioned control device can also automatically control said first ink preparation and/or dispensing unit to provide the calculated amounts of first basic inks.
  • a second ink preparation and/or dispensing unit provided with a plurality of second basic inks separated in independent containers can provide the amounts of second basic inks necessary for obtaining the corrected ink.
  • the mentioned second unit can be located on a moving platform which can be located adjacent to a printing machine for correcting the print colors of said printing machine, and can subsequently be moved to a position adjacent to another printing machine where the operation is repeated.
  • said second unit is integrated in each printing machine. This second unit can also be controlled by the control device.
  • control device receives the color information relating to the first print colors detected by the optical sensors and calculates the amounts of second basic inks necessary for obtaining the corrected ink based on the information relating to the target colors available.
  • the first and second ink preparation and/or dispensing units can be independent from one another, not being physically connected or intercommunicated whatsoever, so one or both units lack control devices, or both have independent control devices.
  • both ink preparation and/or dispensing units are connected to one another and share data, both can even be controlled by one and the same centralized control device controlling both units, said control device being able to be physically located in the first ink preparation and/or dispensing unit, in the second unit, or in none of them, and being able to control them remotely or be distributed in different nodes connected to one another wirelessly for example.
  • control devices can be a computer, a programmable logic controller or the like, provided with data inputs and outputs and memories, and implementing calculating operations, said device being able to be fed with data from sensors and/or databanks, and these calculating operations allowing providing control orders.
  • Said control device can be a single centralized device or consist of multiple distributed nodes that are connected to or independent from one another. Many other equivalent solutions are possible, as will be obvious for a person skilled in the art.
  • Said control device will include a supply source and can comprise data display means such as a screen to provide information to an operator. It can also comprise means allowing said operator to alter the configuration of the control device, such as, for example, a keyboard, pushbuttons, a options menu, etc. These devices can be local or remote devices.
  • the second ink unit will be smaller than the first ink unit, such that it can be more easily handled or even transported by a single operator using a carriage with wheels, for example.
  • the second ink unit can have a smaller number of second basic inks with respect to the number of first basic inks contained in the first ink unit, and/or the containers containing said second basic inks are smaller than the containers containing the first basic inks.
  • flexographic printing machines 40 having a central drum, each provided with six printing groups 41.
  • Information relating to the printing to be performed is provided by means of a prepress digital file 21 containing the motifs to be printed, coinciding with the printing plates arranged in each of the printing groups, preferably with the monochromatic motifs separated from one another, as well as target colors 10 with which each of said motifs must be printed.
  • This information is stored in a digital memory of a control device 20 formed by a PLC (programmable logic controller).
  • a first ink preparation and dispensing unit 30, hereinafter first ink unit 30, is provided with first basic inks 11, corresponding to frequently used specific colors and/or to primary color inks with which other colors are obtained by means of mixing same, and/or to solvents or colorless inks.
  • Said first ink unit 30 also has means for precisely dispensing inks and is controlled by means of the control device 20.
  • control unit 20 calculates the amounts of each of the first basic inks 11 necessary for obtaining each of the initially mixed inks 12 required for printing each of the target colors 10.
  • the control unit 20 actuates the first ink unit 30 to dispense the calculated amounts of the first basic inks 11, thus obtaining the initially mixed inks 12 which are supplied to at least one of the printing groups 41 of at least one printing machine 40 by means of a system of pipes and pumps, for example. This operation is repeated until having supplied at least all the initially mixed inks 12 necessary for printing the target colors 10 included in the prepress digital file 21 to at least one printing machine 40.
  • printing is performed on a substrate 42 with a printing machine 40 the printing groups 41 of which have the printing plates and the corresponding initially mixed inks 12 coinciding with the information in the prepress digital file 21. All or part of the printed substrate is analyzed by means of at least one colorimetric or optical sensor 50, such as a camera or a spectrophotometer, for example.
  • a colorimetric or optical sensor 50 such as a camera or a spectrophotometer, for example.
  • the control device 20 analyzes the data obtained by the optical sensors 50, spectrophotometric sensors, or density sensors and compares this data with the target colors 10 included in the prepress digital file 21. Said comparison allows automatically detecting color deviations in the initial print color 13. Said control device 20 then designs, by means of calculation, corrective inks 15 which, when mixed with the initially mixed inks 12 and once printed, give rise to printed colors 13 with minimized color deviations and/or which allow eliminating said color deviations in future printings.
  • a second ink preparation and dispensing unit 31, hereinafter second ink unit 31, has second basic inks 14 stored in second containers and corresponding to primary color inks, white ink, and black ink, with which other colors are obtained by means of mixing same, and/or solvents or colorless inks.
  • Said second ink unit 31 also has means for precisely dispensing the second basic inks 14.
  • Said second ink unit 31 is independent from the first ink unit 30 and is controlled by the control device 20 regulating same for obtaining the corrective ink 15, which is supplied by an operator or by means of pipes to each printing group 41, where the corrective ink 15 is mixed with the initially mixed ink 12 to obtain the corrected ink 16.
  • the second ink unit 31 is integrated on a platform with wheels that can be pushed by a user and arranged next to any of the three printing machines 40.
  • Said second ink unit 31 has a smaller number of second basic inks 14 to be dispensed contained in smaller second containers compared with the first ink unit 30.
  • the control device 20 of the first ink unit 30 and the second ink unit 31 can be centralized in the first ink unit 30 by remotely controlling the second ink unit 31, or it can be divided into nodes located in each of the ink units 30 and 31, but sharing information wirelessly.
  • the second ink unit 31 provides the corrective ink 15 at a temperature and/or viscosity equal to the temperature and/or viscosity of the initially mixed ink 12 arranged in at least one printing group 41 which has been heated to obtain better printing, as per usual practice.
  • This information is transmitted to the control device 20 from printer temperature and/or viscosity sensors 51 arranged in each printing group 41.
  • the second ink unit 31 regulates the temperature of the dispensed corrective ink 15 using at least one heating device 32 controlled by the control device 20.
  • the heating device 32 can consist of an ink unit temperature and/or viscosity sensor 52 and an electric resistance, arranged for heating and controlling the temperature of the dispensed corrective ink 15.
  • An alternative embodiment in which the temperature of each of the amounts of second basic ink 14 dispensed for preparing the corrective ink 15 or the temperature of the second basic inks 14 contained in the second containers being individually regulated is also contemplated.
  • the second ink unit 31 can add a solvent or colorless ink to the corrective ink 15, thus thinning said corrective ink 15.
  • This temperature and/or viscosity regulation prevents the temperature and/or viscosity of the corrective ink 15 from being substantially altered upon adding said corrective ink 15 to the initially mixed ink 12, and therefore makes mixing easier, the final print color 13 being more predictable. A quicker and more homogenous mixing of both inks is also achieved.
  • sensors can be added to the second ink unit 31 for obtaining a corrective ink 15 closer to the necessary corrective ink calculated by the control device 20, such as an ink unit optical sensor, for example, which allows obtaining color values of the actually dispensed corrective ink 15, and being able to perform additional adjustments before being supplied to the printing group 41.
  • the amounts of second basic inks 14 used for minimizing color deviations in the print color 13 of a specific initially mixed ink 12 obtained based on a specific target color 10 are stored in a database accessible by the control device 20 together with said target color 10.
  • the control device 20 consults said database in the initial steps of future successive jobs, searching for stored print jobs having color characteristics equal or similar to those color characteristics of the job to be implemented by the control device. If the control device 20 finds a previous job with comparable color characteristics, it can implement said amounts of inks necessary for minimizing color deviations, calculated and checked in previous jobs, in the preparation of the initially mixed ink 12 of the job to be done, thus reducing possible color deviations in the initial print color printed only with the initially mixed ink 12.

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (16)

  1. Méthode de correction de la couleur pour corriger la couleur des travaux d'impression effectués dans une machine d'impression comportant:
    a) fournir à chacun ou à plusieurs groupes d'impression (41) d'une machine d'impression (40), une encre initialement mélangée (12) ayant des qualités de couleur égales ou très proches des qualités de couleur d'une des couleurs cible (10) établie qui est au moins une en nombre, dont les valeurs de couleur sont connues;
    b) effectuer une impression initiale sur un substrat (42) avec cette machine d'impression (40) au moyen d'un ou plusieurs de ses groupes d'impression (41) chacun étant pourvu d'une encre initialement mélangée (12);
    c) obtenir des valeurs de la couleur reliées à au moins une couleur d'impression initiale (13) résultant de l'étape b) au moyens d'au moins un capteur optique (50);
    d) détecter les déviations de la valeur de la couleur entre chaque couleur d'impression initiale (13) détectée par le capteur optique (50) et sa couleur cible respective (10);
    e) basé sur cette détection de l'étape d) et pour chaque encre initialement mélangée (12) imprimée avec des déviations, calculer les quantités de deuxièmes encres basiques (14) à fournir pour la correction de chacune de ces encres initialement mélangées (12) imprimant avec des déviations;
    f) ajouter avec précision à chaque encre initialement mélangée (12) imprimant avec des déviations, les quantités calculées respectives des deuxièmes encres basiques (14) et les homogénéiser pour obtenir une encre corrigée (16) qui permette d'effectuer l'impression finale avec des déviations de couleur minimisées, et
    g) effectuer l'impression définitive;
    caractérisée en ce que la méthode comporte par ailleurs:
    h) acquérir les données concernant les valeurs de température de l'encre initialement mélangée durant l'étape b) au moyen de capteurs de température de l'encre (51) intégrés dans la machine d'impression et acquérir les données concernant la température des quantités de deuxièmes encres basiques (14) ajoutées à chaque encre initialement mélangée (12) dans l'étape f) avant leur addition, au moyen de capteurs de température;
    i) utiliser les données acquises dans l'étape h) pour obtenir une encre corrigée (16) ayant des valeurs de température égales ou proches des valeurs de température de l'encre initialement mélangée durant l'étape b) par le réglage d'au moins un dispositif de chauffage et/ou de refroidissement (32).
  2. La méthode conformément à la revendication 1, caractérisée en ce que la méthode comporte de plus:
    • acquérir le données concernant les valeurs de viscosité de l'encre initialement mélangée durant l'étape b) au moyen de capteurs de viscosité (51) intégrés dans la machine d'impression et acquérir des données concernant la température des quantités de deuxièmes encres basiques (14) ajoutées à chaque encre initialement mélangée (12) dans l'étape f) avant leur addition, au moyen de capteurs de température;
    • utiliser les données acquises pour obtenir une encre corrigée (16) ayant des valeurs de viscosité égales ou proches des valeurs de viscosité de l'encre initialement mélangée durant l'étape b) par l'addition de solvants.
  3. La méthode conformément à la revendication 1 ou 2, caractérisée en ce que l'étape f) est mise en oeuvre par un opérateur ou au moyen d'une deuxième unité de préparation et/ou de distribution d'encre (31) ayant ces deuxièmes encres basiques (14).
  4. La méthode conformément à la revendication 1 ou 2, caractérisée en ce que l'encre initialement mélangée (12) est obtenue de mélanger des quantités de premières encres basiques (11) distribuées dans une première unité de préparation et/ou de distribution d'encre (30).
  5. La méthode conformément à la revendication 4, caractérisée en ce que la deuxième unité de préparation et/ou de distribution d'encre (31) est différente et indépendante de la première unité de préparation et/ou de distribution d'encre (30) et en ce que cette deuxième unité de préparation et/ou de distribution d'encre (31) est reliée à distance à la première unité de préparation et/ou de distribution d'encre (30).
  6. La méthode conformément à la revendication 3 ou 5, caractérisée en ce que les quantités de deuxièmes encres basiques (14) ajoutées à chaque encre initialement mélangée (12) imprimant avec des déviations dans l'étape f) ont été préalablement mélangées en créant une encre correctrice (15).
  7. La méthode conformément à la revendication 1 ou 2, caractérisée en ce que le dispositif de chauffage et/ou de refroidissement (32) et/ou l'addition de solvants de l'étape i) agissent sur l'encre corrigée (16).
  8. La méthode conformément à la revendication 1 ou 2, caractérisée en ce que le dispositif de chauffage et/ou de refroidissement (32) et/ou l'addition de solvants de l'étape i) modifient la température et/ou la viscosité de l'encre correctrice (15) ou les deuxièmes encres basiques (14) ou les quantités distribuées de deuxièmes encres basiques (14) avant de les ajouter à l'encre corrigée (16).
  9. La méthode conformément à une quelconque des revendications précédentes, caractérisée en ce qu'un dispositif de contrôle automatique (20) possède les valeurs de couleur des couleurs cible (10) et met en oeuvre les étapes d) et e) en se basant sur ces informations.
  10. La méthode conformément à la revendication 9 lorsqu'elle ne dépend pas de la revendication 3, caractérisée en ce que le dispositif de contrôle automatique (20) de plus met en oeuvre l'étape f).
  11. La méthode conformément à une quelconque des revendications 1 à 9, caractérisée en ce que le dispositif de contrôle automatique (20) met en oeuvre les étapes h) et i) et de plus contrôle la première unité de préparation et/ou distribution d'encre (30).
  12. La méthode conformément à la revendication 3, caractérisée en ce que la deuxième unité de préparation et/ou de distribution d'encre (31) met en oeuvre l'étape f) pour tous les groupes d'impression (41) contenant de l'encre initialement mélangée (12) imprimant avec des déviations d'une et même machine d'impression (40) d'une position adjacente à cette machine d'impression (40), et ensuite cette deuxième unité de préparation et/ou de distribution d'encre (31) est déplacée à une position adjacente à une autre machine d'impression (40), où l'étape f) est répétée pour tous les groupes d'impression (41) contenant de l'encre initialement mélangée (12) imprimant avec des déviations de cette autre machine d'impression (40).
  13. La méthode conformément à une quelconque des revendications précédentes, caractérisé en ce que les quantités de deuxièmes encres basiques (14) utilisées pour minimiser les déviations de couleur dans la couleur d'impression (13) d'une encre spécifique initialement mélangée (12) obtenue sur la base d'une couleur spécifique cible (10) sont stockées ensemble dans une base de données avec cette couleur cible (10) et cette base de données est accessible pour mettre à exécution ces quantités d'encres nécessaires pour minimiser les déviations de couleur dans la préparation de l'encre mélangée initialement (12) dans les travaux suivants.
  14. Un système de correction de la couleur pour au moins une machine d'impression (40) comportant:
    I) un ou plusieurs groupes d'impression (41) d'une ou plusieurs machines (40), chacune étant pourvue d'une encre initialement mélangée (12) ayant des qualités de couleur égales ou très proches des qualités de couleur d'une des couleurs cible établie (10), qui est au moins une en nombre, dont les valeurs de couleur sont connues;
    II) au moins un capteur optique (50) agencé sur chacune des machines d'impression (40) adapté pour détecter les déviations de couleur dans la couleur d'impression (13) imprimée par cette machine d'impression (40) ayant au moins une encre initialement mélangée (12).
    III) des récipients séparés contenant des deuxièmes encres basiques (14) pour alimenter un ou plusieurs groupes d'impression (41) d'une ou plusieurs machines d'impression (40) pourvues d'encre initialement mélangée (12) pour obtenir une encre corrigée (16);
    caractérisée en ce que:
    chaque groupe d'impression (41) possède au moins un capteur de température capable de fournir des données concernant l'encre initialement mélangée (12) contenue dans ce groupe d'impression (41); et des capteurs de température capables de fournir des données concernant la température des quantités des deuxièmes encres basiques (14) à ajouter à l'encre initialement mélangée (12); et en ce que le système, de plus possède
    au moins un dispositif de chauffage et/ou refroidissement (32) approprié pour obtenir une encre corrigée (16) ayant une température égale ou proche de la température de l'encre initialement mélangée (12) et
    un récipient contenant un solvant incolore adapté pour altérer les conditions de viscosité d'une encre corrigée (16) par son addition contrôlée.
  15. Le système conformément à la revendication 14, caractérisé en ce qu'il intègre une première unité de préparation et/ou distribution d'encre (30) ayant des premières encres basiques (11) dans des récipients séparés dont la distribution fournit des encres initialement mélangées (12) et en ce que les deuxièmes encres basiques (14) sont pourvues d'une deuxième unité de préparation et/ou distribution d'encre (31), cette première et/ou cette deuxième unité de distribution (30 et/ou 31) intégrant un dispositif de contrôle (20) adapté pour régler cette distribution et/ou préparation d'encre.
  16. Le système conformément à la revendication 14 ou 15, caractérisé en ce que:
    chaque groupe d'impression (41) possède au moins un capteur de viscosité capable de fournir des données concernant l'encre initialement mélangée (12) contenue dans ce groupe d'impression (41); et des capteurs de viscosité capables de fournir des données concernant la viscosité des quantités de deuxièmes encres basiques (14) ajoutées à chaque encre initialement mélangée (12); et en ce que le système de plus possède
    au moins un dispositif de chauffage et/ou refroidissement (32) adapté pour obtenir une encre corrigée (16) ayant une température égale ou proche de la température de l'encre initialement mélangée (12).
EP14380023.3A 2014-08-11 2014-08-11 Procédé et système pour la correction de couleur dans des travaux d'impression effectués dans une machine d'impression Active EP2985150B1 (fr)

Priority Applications (2)

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EP14380023.3A EP2985150B1 (fr) 2014-08-11 2014-08-11 Procédé et système pour la correction de couleur dans des travaux d'impression effectués dans une machine d'impression
ES14380023.3T ES2631329T3 (es) 2014-08-11 2014-08-11 Sistema y método de corrección de color en trabajos de impresión ejecutados en una máquina impresora

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WO2017174219A1 (fr) 2016-04-07 2017-10-12 Bobst Firenze S.R.L. Système et procédé pour fournir de l'encre depuis plusieurs sources à une machine d'impression
WO2018051332A1 (fr) * 2016-09-13 2018-03-22 Advanced Vision Technology (A.V.T.) Ltd. Système et procédé de commande de caractéristiques de couleur d'une image imprimée
IL254078A0 (en) 2017-08-21 2017-09-28 Advanced Vision Tech A V T Ltd Method and system for creating images for testing
US11446922B2 (en) 2017-09-22 2022-09-20 Bobst Firenze S.R.L. Inking system with embedded colour correction
CN107718855B (zh) * 2017-11-22 2023-11-21 深圳劲嘉集团股份有限公司 一种溶剂混合控制系统和凹版印刷设备
CN117554305A (zh) * 2024-01-12 2024-02-13 沈阳圣祥科技有限公司 一种油墨印刷品的变色质量检验方法及系统

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US7611582B2 (en) * 2005-02-25 2009-11-03 The Procter & Gamble Company Apparatus and method for the transfer of a fluid to a moving web material
ES2264643B1 (es) * 2005-06-22 2007-10-01 Comexi, S.A. Dipositivo y metodo de impresion usando tintas curables por energia para impresora flexografica.
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