EP1273445A2 - Mesure et contrôle de l'encrage dans l'impression sur bande continue - Google Patents

Mesure et contrôle de l'encrage dans l'impression sur bande continue Download PDF

Info

Publication number
EP1273445A2
EP1273445A2 EP02405475A EP02405475A EP1273445A2 EP 1273445 A2 EP1273445 A2 EP 1273445A2 EP 02405475 A EP02405475 A EP 02405475A EP 02405475 A EP02405475 A EP 02405475A EP 1273445 A2 EP1273445 A2 EP 1273445A2
Authority
EP
European Patent Office
Prior art keywords
measurement
measuring
color
printing
web
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.)
Ceased
Application number
EP02405475A
Other languages
German (de)
English (en)
Other versions
EP1273445A3 (fr
Inventor
Matthias Riepenhoff
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.)
Wifag Maschinenfabrik AG
Original Assignee
Wifag Maschinenfabrik AG
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 Wifag Maschinenfabrik AG filed Critical Wifag Maschinenfabrik AG
Publication of EP1273445A2 publication Critical patent/EP1273445A2/fr
Publication of EP1273445A3 publication Critical patent/EP1273445A3/fr
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F1/00—Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed
    • B41F1/26—Details
    • B41F1/54—Printing-pressure control devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control
    • B41F33/0045—Devices for scanning or checking the printed matter for quality control for automatically regulating the ink supply

Definitions

  • the invention relates to a method for measuring the color in the printing, in the integral Measurements are made on the running paper web.
  • the invention also relates to a Apparatus for carrying out the method.
  • the invention relates to a method for Control of coloring in web presses.
  • the invention also relates to a device for Implementation of the procedure.
  • Newspapers are mainly produced by offset. There are several Paper webs unwound from rolls, printed in the printing units and finally in the folder folded and cut.
  • the coloring can be adjusted zone by zone in conventional inking units become.
  • a presetting of the inking units is based on the area coverage of the printing plates, the over so-called plate scanner is determined or can be calculated directly from the image data.
  • the Printer monitors the color throughout the production and decreases if necessary Corrections of coloring before.
  • WO 96/12934 to Graphics Microsystems Inc. discloses a method of measuring the Coloring.
  • a measuring element is made using Video cameras detected and spectrally measured.
  • the disadvantage of these methods is firstly the high technical effort and secondly the need to mitzu réelleen measuring elements on the web, the then be cut off.
  • a newspaper is usually not in your format circumcised, so it is generally undesirable mitzu réelleen measuring elements.
  • Such Measuring methods or automatic color control systems based on such methods are therefore described in US Pat the newspaper production so far not used.
  • the visual assessment of the color in the printing takes place in the three-dimensional color space of the corresponds to the human eye.
  • Weitehin is a method for the rapid control of the color of a Spaltfarbwerks Subject of the invention. This object is achieved according to the invention by the features of the claim 11 solved. Advantageous embodiments emerge from the subclaims.
  • the idea underlying the invention is based on the fact that the coloring of a Printing machine with splitting inking done in zones. One zone corresponds to one each Strip the printed image in the machine direction. In the inventive method is this This circumstance was taken into account insofar as an integral measurement of the colors on the web over one Longitudinal stripes are done. It basically does not matter, whether to a spectral color measurement or a densitometric measurement or another measuring principle for the evaluation of the printed web he follows.
  • Every measurement method for assessing the optical effect of a surface is based on the radiation remitted from the surface is taken up by a measuring apparatus in which there is an integration of the incident light.
  • Be in electronic detectors For example, generates free charges in an optical fiber and that in proportion to the effect of light, unless the working range of the device is exceeded.
  • the incident light is separated by color filters before passing through photosensitive detectors is detected.
  • a spectral measurement one uses the dispersion of a prism or a Gratings to the portions of different wavelengths spatially resolved on a photosensitive Imaged semiconductor array. In the individual cells of the array, the amount of incident light integrated until it comes to saturation.
  • the measuring head can be measured relative to the object to be measured move at the same speed as long as the measuring process lasts. It is usually easier to use a flash lamp and thus in the short time of the flash a high amount of radiation in to guide the detector. In this case, the integration times of the measuring apparatus is short, so that the Movement of the object during the measurement can be neglected.
  • the measured object is the running, printed web in a printing press.
  • the image on it repeats with the rotation frequency of the Pressure cylinder.
  • Rotation of the cylinder the radiation is integrated in the measuring head, from all places along of a strip in the machine direction.
  • the length of the strip corresponds to the Cylinder circumference
  • the strip width depends on the optics of the detector. It does not have to inevitably a sharp image strip will be imaged into the detector.
  • Is the integral Measurement of a periodic template as is the case during printing, over exactly one Period length or an integral multiple of the period length, it depends, the To adjust the measurement period to the period, the time of measurement begins to play in this case not matter.
  • the measurement is made over part of the period length, e.g. a half period, it is required to know the time of the measurement.
  • a reflectance spectrum is an intensity distribution as a function of the wavelength ⁇ .
  • a vector r [I ( ⁇ 1), I ( ⁇ 2), I ( ⁇ 3), ... I ( ⁇ n)].
  • the remission spectrum at location X can be considered as vector r (X).
  • the situation described here using the example of a spectral measurement can be transferred to any color measurement method commonly used in the graphic arts industry.
  • the vector r has only 3 or 4 dimensions.
  • an integral measurement is only dependent on the measuring field function of the measuring head, the lateral measuring position X and the spectral reflectance r (X, Y) of the printed image. In particular, it is independent of the time of the beginning of the measurement.
  • Such a method thus provides reproducible measurements locally in one dimension are resolved, namely transversely to the printing direction.
  • the measuring method corresponds to the possibilities Set the ink supply zone by zone in a printing machine. But it is also possible that To use methods in machines that have so-called zoneless inking.
  • FIG. 4 shows examples of spectral measurements.
  • Each detector has an ideal working area.
  • the incident may Amount of radiation should not be too high so as not to saturate (Sat) the photosensitive elements
  • the amount of light should not be too low ( Figure 4b) to produce a high Ratio between signal and noise of the detector.
  • the strongest Signal which can be measured in the remission, occurs when paper white measured becomes.
  • a measurement of Textilmaschine can be done for example when pulling the web.
  • a Another possibility is the measuring head above the normally unprinted edge strip Position next to the type area or between the individual pages, with the width of the Measurement field function must be considered.
  • the time during which a measurement process leads to saturation of the detector varies.
  • the measurement time is selected such that a maximum in the spectrum is just below the saturation limit of the detector (FIG. 4c), for example at 90% of the saturation. This sets the ideal measuring time.
  • R ref [I ref ( ⁇ 1), I ref ( ⁇ 2), I ref ( ⁇ 3), ... I ref (.lambda..sub.n)], which can be used to normalize the subsequent measurements.
  • a normalized spectrum is obtained by dividing the spectral values of a measurement by the corresponding values of the reference spectrum:
  • R standard [I ( ⁇ 1) / I ref ( ⁇ 1), I ( ⁇ 2) / I ref ( ⁇ 2), I ( ⁇ 3) / I ref ( ⁇ 3), ... I ( ⁇ n) / (I ref (.Lambda..sub.n)].
  • the ideal measuring time T ideal is determined, the actual measuring time T real must be determined from the cycle time for a printing process T.
  • the cycle time of the printing operation is the time period for a printing operation, i. for the one-time copying of the artwork on the paper web. It is often in rotary printing presses equal to the period for one revolution of the printing cylinder. This is especially true when exactly one artwork, e.g. an offset printing plate, located on the circumference of the printing cylinder.
  • Cycle time of the printing process equal to the period for one revolution of the printing cylinder, if the two printing plates carry different pictures and the printing press in the production mode Collective production is operated.
  • the cycle time can also be different from the period for one revolution of the Be printing cylinder. This can, for example, in rotary printing machines for newspaper printing apply, which two printing plates in a row on the circumference of the impression cylinder, if the Both printing plates carry the same picture and the printing presses in the production mode Double production is operated. In this case, the cycle time of the printing process may be equal to be half the period for one revolution of the printing cylinder.
  • the control of the color density is based on the integral measurement of the remission spectrum as previously described, or on an integral densitometric measurement of the web. you receives thereby the necessary actual values.
  • the desired values are determined in the method according to the invention for controlling the color density the separated pixel data is determined, which after the screening of the template to be printed in the Digital prepress will be available or will be out of the actual values as well adopted printed pages.
  • a method for calculating remission spectra is described by Hübler [HUB].
  • the scattering behavior of the substrate and the effect of the applied color layers considered.
  • Prerequisite for a calculation of the local remission spectra is that the different colors without register errors are transferred to the substrate. To this it is possible to use a corresponding control system.
  • Another Possibility exists in the use of so-called satellite pressure units, which Due to their design, they have only low register errors.
  • the local remission spectra are not used as desired values, but the integral over the columns of the image lying in the machine direction is also determined here.
  • the measuring field function of the measuring head is taken into account when calculating the setpoint values.
  • the calculation of setpoint values takes place, for example, in two steps. In a first step, the sum of all remission spectra of pixels forming a column is formed from the separated and screened pixel data, whereby the scattering behavior in the paper and thus the color of the pixels in the vicinity of a scattering radius must be taken into account. This gives an integral remission spectrum for each column of pixels.
  • a column of pixels corresponds to a position X transverse to the machine direction.
  • the measuring field function of the measuring head is taken into account.
  • the measuring field function ⁇ is folded with the spectral sum function S.
  • the control of the color density is based on the comparison of the desired values T (X) with the Measured values R (X).
  • Different inks just differ in that they absorb the radiation different spectral ranges absorb different levels.
  • the long-wavelength spectral range of visible light is absorbed by cyan while it is responsible for the printing ink Magenta is transparent.
  • Fig. 5 shows a schematic example of a print image and the generation of the desired value function.
  • Fig. 5a the areas occupied by color areas are shown.
  • Fig. 5b shows the spectral sum function S (X), which results from the color assignment.
  • FIG. 5c shows the measuring field function ⁇ , which results from the properties of the Measuring head and its positioning to the track results.
  • Fig. 5d shows the desired value function T (X), which is formed by convolution of S with ⁇ . In principle, it corresponds to a smoothed spectral sum function.
  • T (X) varies greatly having.
  • the placement of the measuring head is critical, so these locations should be as possible be avoided.
  • the desired value function is still subject to strong fluctuations, the desired value function, however, a uniform History has. This uniformity is due to the smoothing, which is due to the Convolution with the measuring field function results. This circumstance contributes to e.g. the measurement Scanned print areas is possible when the measuring field width exceeds the screen width.
  • the positioning accuracy of the measuring head should be more accurate than the Measuring field.
  • the measuring field width should be greater than possible lateral shifts the Pressure path to avoid measurement errors caused by relative positioning errors between Measuring head and web can result in avoiding.
  • the pre-press and the printing press it is sufficient it, for a color density control, the zone-wise ink supply and the fountain solution supply as actuators of the control loop.
  • the fountain solution also has an influence on the color reproduction, there is also one Dependence on the area coverage. Too low a dampening solution leads to "toning", i. it comes to color transfer to non-printing areas of the printing plate. Is the dampening solution supply high, especially at low color loss, the risk of "emulsifying" the color, which leads to uncontrollable phenomena.
  • the adjustment of the fountain solution is often done wide, but can also be done in zones, but usually formed only a few zones become.
  • a control strategy of the control method according to the invention therefore provides, as appropriate zone by color decrease of the individual inks and their respective total color decrease one Set of weighting parameters according to which an adjustment of the color screws or an adjustment of the dampening solution supply takes place.
  • measurement locations should also be image-dependent. Places with high Color reduction should be monitored more frequently, especially at the start of production, this corresponds the inking dynamics, because these places react faster to adjustments.
  • places with With a slight decrease in color the time between two measurements may be greater, but it is advantageous to perform several measurements in places with low color decrease to over Averaging to achieve increased accuracy of the measurement. In fact, they are too expected differences from the reference measurement low, so a more accurate measurement required becomes, as with high color decrease.
  • the invention preferably relates to the roller offset printing, particularly preferably wet offset, but is not limited to offset printing, but with advantage also can be used in other printing processes.
  • the material web is preferably a paper web, as is the case in the particularly preferred printing of large newspaper editions. Basically, however, paper does not have to be the material of the web that is the invention Rather, it can be used wherever high quality demands are placed on the printing process be put.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
EP02405475A 2001-07-02 2002-06-11 Mesure et contrôle de l'encrage dans l'impression sur bande continue Ceased EP1273445A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10131934A DE10131934B4 (de) 2001-07-02 2001-07-02 Messung und Regelung der Farbgebung im Rollendruck
DE10131934 2001-07-02

Publications (2)

Publication Number Publication Date
EP1273445A2 true EP1273445A2 (fr) 2003-01-08
EP1273445A3 EP1273445A3 (fr) 2007-06-13

Family

ID=7690276

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02405475A Ceased EP1273445A3 (fr) 2001-07-02 2002-06-11 Mesure et contrôle de l'encrage dans l'impression sur bande continue

Country Status (3)

Country Link
US (1) US7000544B2 (fr)
EP (1) EP1273445A3 (fr)
DE (1) DE10131934B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1815986A3 (fr) * 2006-01-25 2011-09-14 Gallus Ferd. Rüesch AG Machine d'impression d'étiquettes

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI115205B (fi) * 2002-09-04 2005-03-31 Data Instmsto Oy Menetelmä ja laite painojäljen on-line valvomiseksi
US7017492B2 (en) * 2003-03-10 2006-03-28 Quad/Tech, Inc. Coordinating the functioning of a color control system and a defect detection system for a printing press
DE10319770A1 (de) 2003-05-02 2004-12-09 Koenig & Bauer Ag Verfahren zur Regelung der Farbdichte einer von einer Druckmaschine auf einem Druckträger aufgebrachten Farbe und Vorrichtung zur Regelung verschiedener für den Druckprozess einer Druckmaschine relevanter Parameter
EP1512531A1 (fr) * 2003-09-02 2005-03-09 Abb Research Ltd. Système de régulation d'encrage pour machines d'impression
DE102004061469A1 (de) * 2004-12-18 2006-07-13 Man Roland Druckmaschinen Ag Verfahren zur Regelung der Farbgebung in einer Offsettdruckmaschine
US7077064B1 (en) * 2005-04-19 2006-07-18 Sun Chemical Corporation Methods for measurement and control of ink concentration and film thickness
JP2007030348A (ja) * 2005-07-27 2007-02-08 Komori Corp 印刷機のインキ供給量調整方法および装置
US7252360B2 (en) 2005-10-25 2007-08-07 Ecole polytechnique fédérale de Lausanne (EPFL) Ink thickness variations for the control of color printers
CN102381019B (zh) * 2005-11-25 2014-04-30 卡巴-诺塔赛斯有限公司 在印刷机处理期间用于探测在印刷基质上印刷错误发生的方法
DE102007016980A1 (de) 2007-04-10 2008-10-16 Maschinenfabrik Wifag Verfahren zur Messung optischer Spektren im Rollendruck
DE102007016981A1 (de) 2007-04-10 2008-10-16 Maschinenfabrik Wifag Verfahren zum Messen der Farbqualität im Rollendruck
DE102007052785A1 (de) * 2007-11-06 2009-05-07 Manroland Ag Verfahren zum Messen der Farbgebung eines bedruckten Bedruckstoffs innerhalb einer Druckmaschine
DE102008038608A1 (de) * 2008-08-21 2010-02-25 Heidelberger Druckmaschinen Ag Verfahren und Einrichtung zum Drucken von unterschiedlichen Nutzen auf einem Druckbogen
DE102010015034B4 (de) * 2009-04-30 2016-01-14 Heidelberger Druckmaschinen Ag Hybrid-Inline-Farbregelung für Druckmaschinen
WO2013026792A1 (fr) * 2011-08-22 2013-02-28 Windmöller & Hölscher Kg Machine et procédé d'impression de bandes de matériau
DE102014011151B4 (de) 2013-08-23 2025-12-24 Heidelberger Druckmaschinen Ag Mehrstufiges Regeln und Messen von Deckweiß
DE102017110342A1 (de) 2017-05-12 2018-11-15 Prüftechnik Dieter Busch AG Effektivwertbestimmung einer Maschinenschwingungsgröße
RU2739525C1 (ru) * 2020-03-04 2020-12-25 Общество С Ограниченной Ответственностью "Лаборатория Электрографии" Способ оценки качества печати и комплекс средств для его осуществления

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3737775A1 (de) 1987-11-06 1989-05-18 Agfa Gevaert Ag Verfahren und vorrichtung zur messung der dichtewerte einer kopiervorlage
EP0324718A1 (fr) 1988-01-14 1989-07-19 GRETAG Aktiengesellschaft Procédé et dispositif pour régler l'encre dans une machine à imprimer
DE4311132A1 (de) 1992-04-28 1993-11-04 Heidelberger Druckmasch Ag Verfahren zur farbregelung/-steuerung in einer druckmaschine
DE4237004A1 (de) 1992-11-02 1994-05-05 Mohndruck Reinhard Mohn Ohg Verfahren zur Online-Farbregelung von Druckmaschinen
DE4242683A1 (de) 1992-12-17 1994-06-23 Contraves Gmbh Verfahren zum Steuern eines Farbauftrages in einer Druckeinheit

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH283071A (de) * 1950-06-19 1952-05-31 E Herzer Alfred Einrichtung an einer Druckmaschine zur Verhinderung des Weiterdruckens bei unzulässiger Abweichung der Intensität der Druckfarbe.
AT184191B (de) * 1953-11-18 1955-12-27 Winkler Fallert & Co Maschf Farbwerk für Buchdruck-, Offset- u. dgl. Maschinen
US4197584A (en) * 1978-10-23 1980-04-08 The Perkin-Elmer Corporation Optical inspection system for printing flaw detection
DE2950606A1 (de) * 1979-12-15 1981-06-19 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zur zonenweisen optoelektronischen messung der flaechendeckung einer druckvorlage
US5412577A (en) * 1992-10-28 1995-05-02 Quad/Tech International Color registration system for a printing press
US5543922A (en) * 1994-10-19 1996-08-06 Graphics Microsystems, Inc. Method and apparatus for on-press color measurement
JPH08258342A (ja) * 1995-03-27 1996-10-08 Oki Data:Kk 記録装置及び記録方法
US5774225A (en) * 1996-03-27 1998-06-30 Advanced Vision Technology, Ltd. System and method for color measurement and control on-press during printing
DE59708489D1 (de) * 1997-02-19 2002-11-21 Baldwin Germany Gmbh Vorrichtung und Verfahren zur Durchführung von qualitätsmanagement
US6024018A (en) * 1997-04-03 2000-02-15 Intex Israel Technologies Corp., Ltd On press color control system
DE19822669A1 (de) * 1998-05-20 1999-11-25 Baumann Verwertungs Gmbh Haltevorrichtung zum Halten von Firstlatten und Gratlatten
DE19822662C2 (de) * 1998-05-20 2003-12-24 Roland Man Druckmasch Verfahren zur Farbreproduktion auf einer Bilddaten orientierten Druckmaschine
JP3409727B2 (ja) * 1999-03-01 2003-05-26 松下電器産業株式会社 カラー画像形成装置
DE20010920U1 (de) * 2000-06-20 2000-09-14 MAN Roland Druckmaschinen AG, 63075 Offenbach Druckmaschine, insbesondere Bogenoffsetdruckmaschine
US6519425B2 (en) * 2001-02-23 2003-02-11 Hewlett-Packard Company Image-producing methods and apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3737775A1 (de) 1987-11-06 1989-05-18 Agfa Gevaert Ag Verfahren und vorrichtung zur messung der dichtewerte einer kopiervorlage
EP0324718A1 (fr) 1988-01-14 1989-07-19 GRETAG Aktiengesellschaft Procédé et dispositif pour régler l'encre dans une machine à imprimer
DE4311132A1 (de) 1992-04-28 1993-11-04 Heidelberger Druckmasch Ag Verfahren zur farbregelung/-steuerung in einer druckmaschine
DE4237004A1 (de) 1992-11-02 1994-05-05 Mohndruck Reinhard Mohn Ohg Verfahren zur Online-Farbregelung von Druckmaschinen
DE4242683A1 (de) 1992-12-17 1994-06-23 Contraves Gmbh Verfahren zum Steuern eines Farbauftrages in einer Druckeinheit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1815986A3 (fr) * 2006-01-25 2011-09-14 Gallus Ferd. Rüesch AG Machine d'impression d'étiquettes

Also Published As

Publication number Publication date
DE10131934B4 (de) 2010-03-11
US7000544B2 (en) 2006-02-21
DE10131934A1 (de) 2003-01-30
US20030005841A1 (en) 2003-01-09
EP1273445A3 (fr) 2007-06-13

Similar Documents

Publication Publication Date Title
DE10131934B4 (de) Messung und Regelung der Farbgebung im Rollendruck
EP2313273B1 (fr) Procédé de réglage des couleurs d'une machine à imprimer
EP0884178B1 (fr) Procédé pour reguler l'encrage dans une machine d'impression
EP1744884B1 (fr) Procede pour determiner des valeurs de densite et/ou d'encrage et dispositif d'impression pour la mise en oeuvre dudit procede
EP0713447B1 (fr) Dispositif de verification d'image d'un produit imprime
EP2313272B1 (fr) Procede de controle de vraisemblance d'au moins une valeur de mesure déterminee dans une machine d'impression
EP2614958B1 (fr) Procédé destinées à la mesure de champs de couleur.
EP2313271B1 (fr) Procédé de contrôle de la vraisemblance d'au moins une valeur de mesure déterminée dans une machine à imprimer
EP0196431A2 (fr) Procédé, dispositif de réglage et moyens auxiliaires pour l'obtention d'un résultat d'impression uniforme au moyen d'une machine d'impression offset polychrome fonctionnant suivant le procédé de similigravure
EP0914945B1 (fr) Procédé pour régler l'encrage dans une machine d'impression
EP0836941B1 (fr) Groupe de champs de mesure et procédé pour la saisie des données de qualité dans les éditions (tirages) d'impression polychrome
EP0505323B1 (fr) Procédé pour le réglage des grandeurs des points de trame pour une presse rotative à imprimer offset
DE19518660C2 (de) Verfahren zur Einstellung einer Feuchtmittelmenge
DE4237004A1 (de) Verfahren zur Online-Farbregelung von Druckmaschinen
EP0505769B1 (fr) Procédé de détermination du recouvrement de la surface d'un modèle, particulièrement une plaque, et dispositif pour exécuter ce procédé
DE102007041673A1 (de) Verfahren und Messeinrichtung zur Gewinnung von Druckbild- oder Druckplatteninformationen
EP2727730A1 (fr) Procédé de réglage de la couleur dans une imprimante offset
DE102007011344B4 (de) Verfahren zur Farbmessung bei Druckmaschinen
DE69026488T2 (de) Verfahren zur Qualitätsbeurteilung von Druckerzeugnissen
EP1512531A1 (fr) Système de régulation d'encrage pour machines d'impression
WO2007071376A1 (fr) Dispositif et procede de determination de l'etat d'un processus par mesure de la valeur de la tonalite et de la reproduction des teintes
DE102022108751A1 (de) Verfahren zum Betreiben einer Tintenstrahldruckmaschine zum Erzeugen reproduzierbarer Druckergebnisse
CH693533A5 (de) Messfeldblock und Verfahren zur Erfassung von Qualitotsdaten im Mehrfarben-Auflagendruck.
DE19639014A1 (de) Messfeldgruppe und Verfahren zur Erfassung von Qualitätsdaten im Mehrfarben-Auflagendruck
DE19638967A1 (de) Messfeldgruppe und Verfahren zur Erfassung von Qualitätsdaten im Mehrfarben-Auflagendruck

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: WIFAG MASCHINENFABRIK AG

17P Request for examination filed

Effective date: 20071213

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

17Q First examination report despatched

Effective date: 20080128

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20120325