EP1300243B1 - Procédé et dispositif pour déterminer la position d'une bande imprimée - Google Patents

Procédé et dispositif pour déterminer la position d'une bande imprimée Download PDF

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Publication number
EP1300243B1
EP1300243B1 EP02405829A EP02405829A EP1300243B1 EP 1300243 B1 EP1300243 B1 EP 1300243B1 EP 02405829 A EP02405829 A EP 02405829A EP 02405829 A EP02405829 A EP 02405829A EP 1300243 B1 EP1300243 B1 EP 1300243B1
Authority
EP
European Patent Office
Prior art keywords
paper
web
sensor
image data
reference values
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.)
Revoked
Application number
EP02405829A
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German (de)
English (en)
Other versions
EP1300243A3 (fr
EP1300243A2 (fr
Inventor
Jean-Claude Mengisen
Curt Munz
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
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Filing date
Publication date
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Application filed by Wifag Maschinenfabrik AG filed Critical Wifag Maschinenfabrik AG
Publication of EP1300243A2 publication Critical patent/EP1300243A2/fr
Publication of EP1300243A3 publication Critical patent/EP1300243A3/fr
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Publication of EP1300243B1 publication Critical patent/EP1300243B1/fr
Anticipated expiration legal-status Critical
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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
    • B41F33/0081—Devices for scanning register marks

Definitions

  • the invention relates to a method and a device for determining the position of at least one printed web, preferably a paper web in a printing machine, in particular for determining the cutting position of a printed paper web in a rotary printing machine for newspaper printing.
  • a preferred application is the automatic measurement and control of the cutting position of printed paper webs in rotary printing presses for newspaper printing.
  • the printed image or a part of the printed image is detected on the paper web in the printing press.
  • the signals measured by the sensors are advantageously processed to suitable digital measured values.
  • the position of the paper web can be determined in the direction.
  • At least one preferably optoelectronic sensor for observing the printed paper web is provided, which can detect at least a part of a printed image on the paper web.
  • the reference values obtained from the digital image data of the prepress stage are compared in a comparison device with the measured values recorded by the optical sensor or the optical sensors in order to determine the position of the printed paper web from the difference or correlation of reference values and measured values. If the correlation is too low, an error message can be generated.
  • the device according to the invention also has a control with which, using the thus determined actual position of the printed paper web in the running direction, the cutting position of the paper web, for example by controlling a registration roller, can be controlled.
  • the actual value of the position of the printed paper web in the direction of travel is determined.
  • the thus determined position of the paper web in the running direction can then be fed to a cutting position controller as an actual value.
  • the cutting position controller can then automatically regulate the cutting position by comparing the actual value with a predetermined setpoint.
  • the manipulated variable of the cutting position controller can be used to control main registers, secondary registers, bundle registers or a virtual register.
  • the formation of the reference values can be done by calculation from the image data of the prepress.
  • the reference values can be calculated directly from the print original, from the non-screened image data, from the screened and color-separated image data, or from the data of scanned printing plates or films by a suitable method.
  • the reference values can be normalized and processed by means of a computer so that a simple comparison or a direct correlation of the reference values with the measured values is possible.
  • a contrast sensor is used which measures the reflected light intensity on the narrow image strip on the paper web and thus provides a curve of the brightness profile along this image strip. It can be advantageously selected by optimization methods, a particularly suitable image strip, so that a brightness profile is measured with a significant waveform.
  • the reference values and the measured values can in this case be stored, for example, in one-dimensional arrays of brightness values.
  • the printed image is recorded on the printed paper web with a suitable optoelectronic sensor system. This can be done, for example, with contrast sensors, CCD CMOS cameras or line cameras.
  • the recording may e.g. continuously, e.g. the position of the printed paper web in the running direction can be determined by forming a correlation coefficient.
  • the starting point of image acquisition is e.g. synchronized with the rotation of the cutting cylinder in the printing press at each revolution at a certain angular position of the cutting cylinder each triggered by a start pulse, which can be supplied by a position sensor.
  • the reflected light quantity is detected along a narrow image strip in the direction of travel of the paper web.
  • the signals obtained in this way can be digitized by a computer unit and expediently stored in a one-dimensional array of measured values. It is advantageous that a plurality of contrast scanners are distributed transversely to the paper web so that a particularly suitable image strip can be selected. It is also advantageous that these contrast scanners can be positioned by a manual or automatic positioning on a particularly suitable strip of the printed image, wherein the positioning unit can be configured so that z. B. a sensor is moved dynamically across the printing web continuously to a determined optimum position as possible.
  • CMOS cameras or line cameras When using CCD cameras, CMOS cameras or line cameras, the entire print image or parts of it are recorded to determine the position of the printed paper web.
  • the data thus obtained may conveniently be stored in a multi-dimensional array of measurements.
  • FIG. 1 shows the data flow in the calculation of the position of a printed paper web using digital image data of the prepress.
  • reference values 3 are calculated in a computer 2.
  • the measuring signals 4 are processed into measured values 6 in a further unit 5, which can be compared with the reference values 3 in a comparison unit 7.
  • a signal 8 is determined which indicates the position of the printed paper web.
  • the reference values 11 are shown in a diagram in which the horizontal axis 10 indicates the path in the vertical direction in the case of an image from the prepress and the vertical axis 9 the brightness.
  • the reference values 11 describe the brightness progression to a narrow one vertical stripes of the artwork, z. B. a multi-colored newspaper page.
  • the measured values 12 in this example describe the brightness characteristic on a corresponding strip of the printed paper web in the direction of travel of the paper web, shown above the axis 13.
  • the reference values 11 and measured values 12 in this example show similar brightness characteristics.
  • FIG. 3 shows examples of a simple image data content 31 from the prepress stage and the corresponding print image 33 on the paper web. It is shown how an image strip 32 can be selected from the image template of the prepress and a corresponding strip 34 from the print image 33 on the paper web.
  • FIG. 4 shows an exemplary arrangement for determining the cutting position of a printed paper web in a printing machine.
  • Digital image data 50 from the prepress stage is delivered to a device 49 for calculating the position of the printed paper web.
  • Figure 5 shows various types of image data in prepress.
  • the image data B of a page content e.g. a multicolor newspaper page, are e.g. in PostScript format or in PDF format.
  • Raster Image Processing RIP
  • the screened and color separated image data of the printing plates are e.g. shown in TIFF G4 format.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Controlling Sheets Or Webs (AREA)

Claims (12)

  1. Procédé pour déterminer la position d'une bande de papier imprimée 44 dans une machine à imprimer, notamment une machine à imprimer rotative,
    a) des valeurs de référence 3, 11 étant acquises pour déterminer la position à partir de données-images 1 de la phase préalable d'impression ;
    b) au moins une partie d'une image imprimée étant détectée sur la bande de papier par au moins un capteur 43 ;
    c) les valeurs de référence 3, 11 acquises à partir des données-images de la phase préalable d'impression étant comparées avec les valeurs mesurées 46 détectées par le au moins un capteur 43 ; et
    d) la position 8, 14, 51 de la bande imprimée 44 étant déterminée à partir du résultat de la comparaison.
  2. Procédé selon la revendication 1, les valeurs de référence 3,11 pour déterminer la position étant déterminées à partir des contenus d'images d'une maquette d'impression, notamment des données-images d'une page de journal en plusieurs couleurs, ou à partir des données-images tramées et à couleurs séparées pour l'exposition de la plaque d'impression, ou à partir des données-images de plaques d'impression scannées ou de films scannés.
  3. Procédé selon l'une quelconque des revendications précédentes, un capteur optoélectronique, notamment une caméra CDD et/ou une caméra CMOS et/ou une caméra linéaire et/ou un balayeur de contraste étant utilisé en tant que capteur 43.
  4. Procédé selon l'une quelconque des revendications précédentes, au moins la une partie de l'image imprimée sur la bande de papier 44 étant détectée de façon synchrone au déplacement d'un élément de la machine, de préférence de façon synchrone à la rotation du cylindre de coupe 41.
  5. Procédé de réglage de la position d'une bande de papier imprimée dans une machine à imprimer, la position de la bande de papier imprimée déterminée avec le procédé selon l'une quelconque des revendications 1 à 4 étant utilisée pour le réglage, notamment en tant que valeur réelle.
  6. Procédé selon l'une quelconque des revendications précédentes, la position de la bande de papier et/ou la position de coupe de la bande de papier imprimée dans une machine à imprimer rotative étant mesurée et/ou réglée avec un repérage principal et/ou un repérage auxiliaire et/ou un repérage de paquets et/ou un repérage virtuel.
  7. Procédé selon l'une quelconque des revendications 1 à 4, pour l'identification des défauts d'occupation dans l'agencement de plaques d'impression sur les cylindres d'impression dans une machine à imprimer, un message de défaut étant automatiquement généré si lors de la comparaison des valeurs mesurées avec les valeurs de référence, la corrélation entre les valeurs mesurées et les valeurs de consigne est trop faible.
  8. Procédé selon l'une quelconque des revendications 1 à 4 pour déterminer et/ou pour régler la position relative des images imprimées au recto d'une bande de papier, par rapport aux images imprimées au verso de cette même bande de papier.
  9. Dispositif pour déterminer la position d'une bande de papier imprimée 44 dans une machine à imprimer, notamment dans une machine à imprimer rotative, comprenant:
    a) un dispositif de traitement de données 2, qui à partir de données-images 1, 50 d'une phase préalable d'impression détermine des valeurs de référence 3 pour déterminer la position ;
    b) au moins un capteur 43 pour détecter au moins une partie d'une image imprimée sur la bande de papier 44 ; et
    c) un dispositif de comparaison 7, 49 qui compare entre elles les valeurs de référence 3 et les valeurs mesurées 6 ; 46, 48 par le au moins un capteur 43, pour déterminer à partir de ces dernières la position 8, 14, 51 de la bande de papier imprimée.
  10. Dispositif selon la revendication 9, le capteur 43 étant un capteur optoélectronique, notamment une caméra CDD et/ou une caméra CMOS et/ou une caméra linéaire et/ou un balayeur de contraste.
  11. Dispositif pour régler la position ou la position de coupe d'une bande de papier imprimée dans une machine à imprimer, comprenant un dispositif selon la revendication 9 ou 10 et un dispositif de réglage pour régler la position d'une bande de papier, qui utilise la position déterminée de la bande de papier imprimée en tant que signal d'entrée.
  12. Dispositif selon l'une quelconque revendications 9 à 11, le dispositif de comparaison et/ou la dispositif de réglage réalisant au moins l'une des étapes de procédé définies dans les revendications 1 à 8.
EP02405829A 2001-10-04 2002-09-26 Procédé et dispositif pour déterminer la position d'une bande imprimée Revoked EP1300243B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10149158A DE10149158B4 (de) 2001-10-04 2001-10-04 Verfahren und Vorrichtung zur Ermittlung der Position einer bedruckten Papierbahn
DE10149158 2001-10-04

Publications (3)

Publication Number Publication Date
EP1300243A2 EP1300243A2 (fr) 2003-04-09
EP1300243A3 EP1300243A3 (fr) 2004-03-03
EP1300243B1 true EP1300243B1 (fr) 2006-10-18

Family

ID=7701505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02405829A Revoked EP1300243B1 (fr) 2001-10-04 2002-09-26 Procédé et dispositif pour déterminer la position d'une bande imprimée

Country Status (6)

Country Link
US (1) US6779454B2 (fr)
EP (1) EP1300243B1 (fr)
AT (1) ATE342803T1 (fr)
DE (2) DE10149158B4 (fr)
DK (1) DK1300243T3 (fr)
ES (1) ES2274952T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2028144A2 (fr) 2007-08-21 2009-02-25 Koenig & Bauer AG Dispositif de surveillance et/ou de réglage d'une bande en mouvement dans une imprimante rotative et procédé de surveillance d'une bande en mouvement

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DE10352619B4 (de) 2003-07-11 2012-09-27 Koenig & Bauer Aktiengesellschaft Verfahren und Vorrichtung zur Beeinflussung des Fan-Out-Effektes
US7523705B2 (en) * 2004-03-08 2009-04-28 Goss International Americas, Inc. Web printing press and method for controlling print-to-cut and circumferential register
DE102004028056A1 (de) * 2004-04-22 2005-11-17 Maschinenfabrik Wifag Vorrichtung und Verfahren zur Erkennung von Registerfehlern
DE102005041179A1 (de) * 2005-08-31 2007-03-01 Man Roland Druckmaschinen Ag Verfahren zur Regelung von drucktechnischen Prozessen
US8428333B2 (en) 2006-03-16 2013-04-23 Vefin N.V. Apparatus for performing repetitive operations
DE102007003488A1 (de) 2007-01-24 2008-07-31 Man Roland Druckmaschinen Ag Verfahren zur Schnittregisterregelung
DE102007007447A1 (de) 2007-02-15 2008-08-28 Man Roland Druckmaschinen Ag Verfahren zur Regelung von drucktechnischen Prozessen
DE102007012736A1 (de) 2007-03-16 2008-09-18 Man Roland Druckmaschinen Ag Verfahren zur Regelung von drucktechnischen Prozessen
ATE480402T1 (de) * 2007-07-18 2010-09-15 Texmag Gmbh Vertriebsges Verfahren zum rapportgenauen erfassen einer laufenden warenbahn
DE102008023961A1 (de) 2008-05-16 2009-11-19 Manroland Ag Verfahren zur Regelung von drucktechnischen Prozessen
DE102008002387B3 (de) * 2008-06-12 2009-07-09 Koenig & Bauer Aktiengesellschaft Verfahren zur Ermittlung einer Referenz zur Einstellung eines Arbeitsaktes
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
EP4146477A1 (fr) * 2020-05-06 2023-03-15 Windmöller & Hölscher KG Procédé de gestion automatique d'erreurs d'une machine d'impression, et machine d'impression

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EP0770480B1 (fr) 1995-10-25 2001-12-19 Heidelberger Druckmaschinen Aktiengesellschaft Presse à imprimer digitale avec contrôle de registre
US6018687A (en) * 1997-02-07 2000-01-25 Quad/Tech, Inc. Method and apparatus for printing cutoff control using prepress data
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2028144A2 (fr) 2007-08-21 2009-02-25 Koenig & Bauer AG Dispositif de surveillance et/ou de réglage d'une bande en mouvement dans une imprimante rotative et procédé de surveillance d'une bande en mouvement
WO2009024579A2 (fr) 2007-08-21 2009-02-26 Koenig & Bauer Aktiengesellschaft Dispositifs et procédé de contrôle et/ou de régulation d'une marche de faisceau dans un système de cônes d'une presse rotative à imprimer
EP2210839A2 (fr) 2007-08-21 2010-07-28 Koenig & Bauer Aktiengesellschaft Dispositif de surveillance et/ou de réglage d'une bande en mouvement dans une imprimante rotative et procédé de surveillance d'une bande en mouvement

Also Published As

Publication number Publication date
DE10149158A1 (de) 2003-04-24
US20030066451A1 (en) 2003-04-10
EP1300243A3 (fr) 2004-03-03
US6779454B2 (en) 2004-08-24
EP1300243A2 (fr) 2003-04-09
DK1300243T3 (da) 2007-02-19
DE50208485D1 (de) 2006-11-30
ES2274952T3 (es) 2007-06-01
DE10149158B4 (de) 2010-07-22
ATE342803T1 (de) 2006-11-15

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