EP1759845B1 - Procédé de contrôle pour une méthode à imprimer - Google Patents

Procédé de contrôle pour une méthode à imprimer Download PDF

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Publication number
EP1759845B1
EP1759845B1 EP06017947A EP06017947A EP1759845B1 EP 1759845 B1 EP1759845 B1 EP 1759845B1 EP 06017947 A EP06017947 A EP 06017947A EP 06017947 A EP06017947 A EP 06017947A EP 1759845 B1 EP1759845 B1 EP 1759845B1
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EP
European Patent Office
Prior art keywords
sensor
data
characteristic
printing
printing stage
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.)
Not-in-force
Application number
EP06017947A
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German (de)
English (en)
Other versions
EP1759845A2 (fr
EP1759845A3 (fr
Inventor
Michael Schönert
Alfons Schuster
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.)
Manroland AG
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Manroland AG
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Publication date
Application filed by Manroland AG filed Critical Manroland AG
Publication of EP1759845A2 publication Critical patent/EP1759845A2/fr
Publication of EP1759845A3 publication Critical patent/EP1759845A3/fr
Application granted granted Critical
Publication of EP1759845B1 publication Critical patent/EP1759845B1/fr
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety 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
    • B41F33/02—Arrangements of indicating devices, e.g. counters

Definitions

  • the invention relates to a method for the regulation of printing processes according to the preamble of claim 1.
  • DE 198 02 920 discloses a device for zonal and at least substantially the entire length of a Drucker detecting color measurement in a rotary printing machine with a plurality of printing units for printing a printing material or sheets in multiple colors, each color zone for the inks cyan, yellow and magenta common measuring device and for the Printing ink Black a separate measuring device is present, each comprising a light source per color zone, the measuring devices each having a control device is generated, the basis of a comparison between the color measured by the measuring device color continuum and scanner readings or Vorgenmeß tone Sollfarbver notoriousskurven containing color zone values per ink, wherein the control means comprises a color control calculator which determines the color zone set points and, by comparison with the color continuum measured by the measuring means, control values for the opening of the color zones adjusting means supplies.
  • a method for monitoring the print quality multicolor raster print templates of an offset printing machine wherein in addition to the known determination of the area coverage, the average color raster point thickness of the primary colors participating in the pressure is determined in the measurement segment by digitized color separation images are generated in three spectral regions of the test segment to be tested, and wherein the geometrical resolution of the image grid is higher than that of the print grid, and the desired mean color grid point thickness in the measurement segment is determined from these color separation images by determining the average gray value of the purely primary-color pixels.
  • the DE 42 37 004 C2 discloses a non-marking control method for controlling the color density of a printed product, wherein for this purpose the printed image of the printed product is measured directly by means of sensors. Actual values determined here are compared with reference values which are based on image data or prepress data.
  • the DE 101 49 158 A1 discloses a likewise without a brand-working method for cutting register control on a printing machine, wherein also in this method for the control pressure pre-stage-based setpoints are used.
  • the present invention has the object to provide a novel method for the regulation of printing processes.
  • the or each pressure pre-stage-based setpoint value is determined from prepress data and taking into account data about the characteristic of the sensor, with whose actual value the desired value is compared.
  • the or each pre-pressure based setpoint is determined from the prepress data, data on the characteristic of the sensor, and data on the characteristic of the printing process.
  • a predetermined by Druckvorinsky target print image is converted taking into account the characteristics of each sensor and the characteristic of the printing process in an intermediate image, based on the intermediate image of the respective target value is determined for the control.
  • a characteristic of the respective sensor a grayscale resolution or color intensity resolution and / or a spectral sensitivity and / or a geometric resolution and / or a measuring speed of the sensor are used.
  • a speed of the printing process is used.
  • FIG Fig. 1 described in more detail.
  • Fig. 1 schematically shows the structure of a control loop for carrying out the method according to the invention for controlling a printing process.
  • the printing process to be controlled or the printing process is in Fig. 1 represented by a block 10, wherein at least one controlled variable of the printing process 10 is measured by means of at least one sensor.
  • Fig. 1 shows an actual value 11 of the printing process 10 to be controlled as the measuring signal of a sensor.
  • the actual value 11 is compared with a desired value 12 to form a control deviation 13, wherein the control deviation 13 is fed to a controller 14 as input, which generates a control variable 15 based on the control deviation 13 and a regulator law as the output variable, which is to be controlled as input to the controller printing process 10 is used.
  • the printing process 10 to be controlled it may, for. B. to a cut register control, color register control or color density control.
  • control method operates without a mark, ie without the use of print control marks printed on a printed product to be produced. Accordingly, a sensor for measuring the printed product and thus for providing the actual value 11 immediately measures the printed image of the printed product, whereby the actual value 11 provided in this case is compared with a pressure-preset-based desired value 12.
  • the pressure-bias-based setpoint value 12 on the one hand on the basis of prepress data 16 of the print image to be printed and on the other hand on the basis of data 17 on the characteristic of the sensor with whose actual value the setpoint value is compared.
  • the data 17 can also contain data about the characteristic of the printing process to be controlled, which are then also taken into account in the provision or determination of the desired value 12.
  • Data 18 of an intermediate image are generated from the pre-print data 16 of the print image to be printed and from the data 17 about the characteristics of the sensor and the printing process to be controlled, the data 18 of the intermediate image being reduced in scope relative to the pre-press data 16 of the print image to be printed, and contain only such partial data from the Druckvortrertz 16, which can be determined or detected by the sensor.
  • relevant data 19 can be determined for the regulation of the printing process, which can be used as setpoint 12 for the control of the printing process 10.
  • the setpoint value 12 for controlling the printing process 10 is thus derived from prepress data 16 of the print image or subject to be printed, taking into account data 17 on the characteristics of the sensor used and optionally on the characteristics of the printing process ,
  • the actual value 11 provided by the sensor is compared with a setpoint value 12 adapted to the sensor, which exclusively contains data which can be detected by the sensor on the printed product during the printing process. This makes it possible to limit the amount of data to be handled, without affecting the achievable rule quality.
  • a gray level resolution or a color level resolution and / or a spectral sensitivity and / or a geometric resolution and / or a measurement speed of the sensor can be taken into account when determining a corresponding desired value.
  • the greyscale resolution or the color intensity resolution as well as the spectral sensitivity of the sensor are taken into account when determining a corresponding desired value by filtering the prepress data.
  • a geometric scaling of the prepress data can take place.
  • a cut register control using a designed as a contrast sensor sensor are performed, as the characteristic of the contrast sensor, which is a light-dark sensor, the grayscale resolution of the contrast sensor, the size of a light spot thereof and the spectral sensitivity of the same considered .
  • prepress data of the print image to be printed is then converted into data of the intermediate image. This is done, as already mentioned, by filtering as well as geometric scaling of the prepress data.
  • the sensor used does not detect individual colors of the prepress data due to its spectral sensitivity, then these spectral regions are filtered out when the data of the intermediate image is generated.
  • certain structural elements of a printed image can be filtered out of the prepress data, in particular if the resolution of the sensor is lower than the resolution of the prepress data.
  • the amount of data can be further reduced by way of geometric scaling of the prepress data, so that ultimately the data of the intermediate image from which the corresponding desired value is determined are adapted to the reception characteristic of the sensor used ,
  • the method according to the invention can be used in all printing technology processes which are to be controlled without the use of print control marks to be printed in a printed product and therefore without a mark.
  • the prepress data can be adjusted based on the characteristics of the sensors used accordingly.
  • the sensors can be, for example, contrast scanners, CCD line scan cameras or CCD area cameras, CMOS line scan cameras or CMOS area scan cameras or even fiber optic sensors.

Claims (10)

  1. Procédé de régulation sans marque de procédés techniques d'impression, notamment de régulation de registre de coupe ou registre d'encrage ou registre de densité d'encrage sur une machine d'impression, dans lequel, pour déterminer au moins une valeur réelle, l'image imprimée est mesurée directement à l'aide d'au moins un capteur, la ou chaque valeur réelle mesurée étant comparée respectivement à une valeur théorique basée sur un stade préliminaire à l'impression et, sur la base d'un écart de réglage déterminé à partir de la ou de chaque valeur réelle et de la valeur théorique respective, un signal de réglage pour le procédé technique d'impression à réguler est déterminé, la ou chaque valeur théorique basée sur un stade préliminaire à l'impression étant déterminée à partir de données du stade préliminaire à l'impression ainsi qu'en tenant compte de données sur la caractéristique du capteur à la valeur réelle duquel la valeur théorique est comparée, caractérisé en ce que, à partir des données du stade préliminaire à l'impression (16) de l'image à imprimer et des données (17) sur la caractéristique du capteur et du procédé technique d'impression à réguler, sont générées des données (18) d'une image intermédiaire, les données (18) de l'image intermédiaire ayant un volume réduit par rapport aux données du stade préliminaire à l'impression (16) de l'image à imprimer et ne contenant que la partie des données du stade préliminaire à l'impression (16) qui peuvent être déterminées ou détectées directement par le capteur.
  2. Procédé selon la revendication 1, caractérisé en ce que la ou chaque valeur théorique basée sur le stade préliminaire à l'impression est déterminée à partir de données du stade préliminaire à l'impression, de données sur la caractéristique du capteur respectif et de données sur la caractéristique du procédé technique d'impression.
  3. Procédé selon la revendication 2, caractérisé en ce qu'une image d'impression théorique définie par des données du stade préliminaire à l'impression est transformée, en tenant compte de la caractéristique du capteur respectif et de la caractéristique du procédé technique d'impression, est transformée en une image intermédiaire, la valeur théorique respective pour la régulation étant déterminée sur la base de l'image intermédiaire.
  4. Procédé selon une ou plusieurs des revendications 1 à 3, caractérisé en ce qu'on tient compte en tant que caractéristique du capteur respectif d'une définition du stade gris ou d'une définition du stade coloré et/ou de sa sensibilité spectrale.
  5. Procédé selon la revendication 4, caractérisé en ce que, sur la base de la définition du stade gris ou de la définition du stade coloré et/ou sur la base de la sensibilité spectrale du capteur, les données du stade préliminaire à l'impression de l'image d'impression théorique sont filtrées pour fournir l'image intermédiaire.
  6. Procédé selon une ou plusieurs des revendications 1 à 5, caractérisé en ce qu'on tient compte en tant que caractéristique du capteur respectif d'une définition du stade gris ou d'une définition géométrique de celui-ci.
  7. Procédé selon la revendication 6, caractérisé en ce que, sur la base de la définition géométrique du capteur, les données du stade préliminaire à l'impression de l'image d'impression théorique sont échelonnées géométriquement pour fournir l'image intermédiaire.
  8. Procédé selon une ou plusieurs des revendications 1 à 7, caractérisé en ce qu'on tient compte en tant que caractéristique du capteur respectif d'une vitesse de mesure de celui-ci.
  9. Procédé selon une ou plusieurs des revendications 1 à 8, caractérisé en ce qu'on tient compte en tant que caractéristique du procédé technique d'impression d'une vitesse de celui-ci.
  10. Procédé selon la revendication 8 ou 9, caractérisé en ce que, sur la base de la vitesse de mesure du capteur et/ou de la vitesse du procédé technique d'impression, les données du stade préliminaire à l'impression de l'image d'impression théorique sont échelonnées géométriquement pour fournir l'image intermédiaire.
EP06017947A 2005-08-31 2006-08-29 Procédé de contrôle pour une méthode à imprimer Not-in-force EP1759845B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005041179A DE102005041179A1 (de) 2005-08-31 2005-08-31 Verfahren zur Regelung von drucktechnischen Prozessen

Publications (3)

Publication Number Publication Date
EP1759845A2 EP1759845A2 (fr) 2007-03-07
EP1759845A3 EP1759845A3 (fr) 2010-11-17
EP1759845B1 true EP1759845B1 (fr) 2011-12-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06017947A Not-in-force EP1759845B1 (fr) 2005-08-31 2006-08-29 Procédé de contrôle pour une méthode à imprimer

Country Status (7)

Country Link
US (1) US20070047030A1 (fr)
EP (1) EP1759845B1 (fr)
JP (1) JP2007062374A (fr)
KR (1) KR20070026087A (fr)
CN (1) CN1931578A (fr)
CA (1) CA2557680A1 (fr)
DE (1) DE102005041179A1 (fr)

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DE102007016981A1 (de) * 2007-04-10 2008-10-16 Maschinenfabrik Wifag Verfahren zum Messen der Farbqualität im Rollendruck
DE102008023961A1 (de) * 2008-05-16 2009-11-19 Manroland Ag Verfahren zur Regelung von drucktechnischen Prozessen
JP5713587B2 (ja) * 2010-06-29 2015-05-07 三菱重工印刷紙工機械株式会社 製函機，検査装置，及び製函機の印刷見当制御方法
ES2395182B1 (es) * 2011-08-12 2013-11-28 Comexi Group Industries, Sau Método para controlar la operación de una máquina impresora y máquina impresora flexográfica para su implementación.
DE102012020911A1 (de) * 2011-11-11 2013-05-16 Heidelberger Druckmaschinen Ag Färbungswächter für Druckmaschinen
EP2712732B1 (fr) * 2012-09-28 2018-06-27 Fujifilm Corporation Plaque en relief d'impression, appareil de production de telles plaques, appareil d'impression, appareil de détermination de la pression d'impression et procédés associés
CN103182836A (zh) * 2013-03-29 2013-07-03 广西南宁市万豪佳鑫纸业有限责任公司 一种具有含水量检测能力的印刷机系统
DE102019110853B4 (de) 2019-04-26 2022-05-12 Koenig & Bauer Ag Bogenbearbeitungsmaschine und Verfahren zur Inspektion zumindest eines verbliebenen und von einer Formgebungseinrichtung bearbeiteten Teils zumindest eines Bogens
DE102019110854A1 (de) * 2019-04-26 2020-10-29 Koenig & Bauer Ag Verfahren zur Inspektion zumindest eines Bogens und Vorrichtungen zur Inspektion zumindest eines Bogens

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Also Published As

Publication number Publication date
US20070047030A1 (en) 2007-03-01
CA2557680A1 (fr) 2007-02-28
CN1931578A (zh) 2007-03-21
KR20070026087A (ko) 2007-03-08
EP1759845A2 (fr) 2007-03-07
JP2007062374A (ja) 2007-03-15
DE102005041179A1 (de) 2007-03-01
EP1759845A3 (fr) 2010-11-17

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