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EP1843898B2 - Procede de reperage - Google Patents

Procede de reperage Download PDF

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Publication number
EP1843898B2
EP1843898B2 EP06706321.4A EP06706321A EP1843898B2 EP 1843898 B2 EP1843898 B2 EP 1843898B2 EP 06706321 A EP06706321 A EP 06706321A EP 1843898 B2 EP1843898 B2 EP 1843898B2
Authority
EP
European Patent Office
Prior art keywords
images
printed
printing plate
printing
monochrome
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.)
Active
Application number
EP06706321.4A
Other languages
German (de)
English (en)
Other versions
EP1843898A1 (fr
EP1843898B1 (fr
Inventor
Manfred Loddenkötter
Martin Krümpelmann
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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
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Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP1843898A1 publication Critical patent/EP1843898A1/fr
Application granted granted Critical
Publication of EP1843898B1 publication Critical patent/EP1843898B1/fr
Publication of EP1843898B2 publication Critical patent/EP1843898B2/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering 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
    • B41F33/0081—Devices for scanning register marks

Definitions

  • the invention relates to a method and a device for registering a central cylinder flexographic printing machine with a plurality of inking units.
  • Register procedure (eg US 5 056 430 A1 ) are known.
  • the copy DE 195 27 199 A1 discloses a register method of a central cylinder flexographic printing machine, in which the run time of individual print marks are adjusted with a sensor system.
  • the position of the register mark on the current printing material at a time in relation to the input of the trigger signals is set to determine the correction signals.
  • This method requires one sensor system per inking unit.
  • the object of the present invention is to propose a method and an apparatus for registering a central cylinder flexographic printing press, which is kept a fold.
  • the method according to the invention is particularly suitable for pre-registering.
  • the pre-registration can be carried out particularly well here in an automated form.
  • a camera system that is positioned in the web running direction behind the last inking unit inking system is sufficient. If necessary, the printing of register marks can be completely dispensed with.
  • the images of printed substrate taken may be pieces of printed images, such as register marks, other image components, or even the entire image.
  • a printing cylinder is usually located in the pressing position and produces monochrome printed images which are recorded by the at least one sensor station. Similar to a cylinder-web process, the position of the monochrome print image on the substrate at a time - when recording the print image by the sensor station - with information on the rotational movements of pressure plate cylinders as their angular position is plotted against time.
  • the information mentioned to a certain extent generates a temporal coordinate system with which the angular position of printing cylinders in relation to the recording time of the image can be set by the sensoration.
  • This temporal coordinate system then allows the comparison of the position of the individual monochrome printed images, which are recorded at different times by the at least one sensor station.
  • the information about the rotational movements of printing plate cylinders may be, for example, average information about the rotational movements of a group of printing plate cylinders. Most likely, however, is that information be taken about the rotational movement of a single plate cylinder - preferably the one that is first set to the printing position. This pressure plate cylinder can then continue to turn during the entire register process and thus help to generate the information - for example, one trigger signal per revolution.
  • a preferred field of application of the method is the pre-registering, in particular of central cylinder machines. Especially when used as a pre-register method, the method can be combined with other methods that register during the printing operation.
  • register operations according to the invention are also conceivable during ongoing printing operation.
  • the images recorded by the sensor station are displayed on a screen, then it is advantageous for the machine operator if the display produces, for example, a linear relationship between a desired position of an image and the image.
  • the register process in this example is as follows:
  • This example causes the operator at the push of a button until it is corrected until the front edge of the monochrome print image of the master cylinder is flush with the screen mark.
  • the master cylinder is turned off from the printing position but further rotated in the parked position.
  • the machine operator adjusts the angular position of the other cylinders one after the other with further correction signals so that, with each recording, that is to say with each trigger signal of the master cylinder, they lie with their front edge on this marking. In this way, the angular positions of all printing plate cylinders are brought into line with that of the master cylinder.
  • the distance of the print image from the mark is displayed linearly on the screen to facilitate the operator's work.
  • Another possibility is that the operator applies markings to the various monochrome print images. It is particularly advantageous if he does so in places of monochrome print images, which he knows that they are superimposed on the multicolored print image.
  • the control device can then calculate the correction signals which ensure that these two markings are printed on the printing substrate web in such a way that they are printed one above the other at a specific angular position of the master cylinder (s). The same can be done without machine operator if a control device sets such markings, or if it uses specific points in the monochrome print images for the described purpose.
  • a printing press for carrying out the method according to the invention contains control devices with which a part of the illustrated and claimed methods can be carried out automatically.
  • a rotary printing press for carrying out the method according to the invention is generally equipped with sensor arrangements which are passed by the printing substrate after the last inking unit arranged on the impression cylinder, since sensor arrangements arranged in this way can receive the print images of all these inking units.
  • sensor arrangements which are passed by the printing substrate after the last inking unit arranged on the impression cylinder, since sensor arrangements arranged in this way can receive the print images of all these inking units.
  • the inclusion of two camera systems in such a sensor arrangement is recommended in order to be able to adequately record once the entire print image and on the other hand for registering specific area elements.
  • a second camera system would then focus on specific, for the purpose of registration suitable image sections - such as brands, crosses or even randomly suitable components of the images.
  • FIG. 1 a functional sketch of a central cylinder flexo printing machine
  • FIG. 2 the functional sketch FIG. 1 in carrying out a register method according to the invention
  • Fig. 3 the functional sketch FIG. 1 in carrying out a register method according to the invention
  • Fig. 4 a schematic representation of a screen image when performing a register method according to the invention
  • Fig. 5 a second schematic representation of a screen image when performing a register method according to the invention
  • Fig. 6 a third schematic representation of a screen image when performing a register method according to the invention
  • FIG. 1 shows a functional diagram of a central cylinder flexographic printing machine 3 in the execution of a print job to which all six inking units Fn are required. Therefore, all printing plate cylinders D1 to D6 are shown in their printing position.
  • the arrow 5 symbolizes the recording direction of the sensor station S.
  • the point P illustrates the location of the printing material on which on the screen 7 of the FIGS. 4 to 6 the screen mark 8 is located.
  • FIG. 2 shows the same function sketch at the beginning of an example of a register method according to the invention.
  • Only the printing cylinder D1 is employed to the counter-pressure cylinder 2, and prints the substrate web 1 with a monochrome print image 6.
  • FIG. 3 the register process has progressed further. The registration has already been carried out on the plate cylinders D1 to D4. These cylinders D1 to D4 were turned off again after their registration by the counter-pressure cylinder 2 and continue to rotate at the same speed. Im in FIG. 3 shown torque prints only the printing plate cylinder D5. The registration of the cylinder D6 is still pending. Suitable sensors on the first registered printing plate cylinder D1 provide a trigger signal at each completed rotation of this cylinder, which causes the sensor assembly S to take an image of the printing material web.
  • FIG. 4 shows a schematic representation of an image on the screen 7.
  • the printing material web 2 with its 2 edges 11 can be seen, which carries the monochrome print images 6a to d.
  • the image has been recorded by the sensor array S before registering.
  • the front edge of the monochrome print image 6c in the transport direction of the web z is still spaced from the screen mark for the longitudinal register 8.
  • This screen mark corresponds to the illustration of the position of the screen mark P and may well be fixedly mounted on the machine frame.
  • FIG. 5 shows a schematic representation of an image on the screen 7, which illustrates in this embodiment, the completed register process on a printing cylinder characterized in that the lower edges of the images 6a to d abut the screen mark 10 and that the front edge of the printed image 6c flush with the screen mark 8 runs.
  • the monochrome print images 6 one will usually be content with a smaller number of print images 6 of an inking unit Fn on a screen.
  • a screen 7 is shown, on the same time print images 6 are shown, which come from different inking units. Since these inking units Fn have been printed at different times and have been registered, such a representation requires at least intermediate storage of monochrome print images 6. However, this measure may also be advantageous if such simultaneous display on a screen 7 is not intended at all.
  • this setting-up process is generally carried out similarly to the register process explained with reference to the figures, in that the individual inking units successively produce monochrome print images which are preferably recorded by a sensor arrangement arranged downstream of the web 2 after the last printing unit Dn.
  • the images 6a-d recorded by the sensor array are examined. On the basis of the investigation, the provisioning process is regulated.
  • Such register processes in which then monochrome print images but, for example, two-color print images are evaluated, would be faster to perform than due to monochrome print images performed procedures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Shift Register Type Memory (AREA)
  • Communication Control (AREA)
  • Rotary Presses (AREA)

Claims (20)

  1. Procédé de repérage d'une rotative (3) pour un processus d'impression, dans lequel n dispositifs d'encrage (Fn) produisent respectivement des images d'impression (6) en une couleur et les impriment les unes sur les autres en images d'impression en n couleurs, dans lequel
    - des images (6) de tissu d'impression imprimé (1) sont enregistrées par au moins une station de capteurs (S), cependant la station de capteurs (S) enregistre des images d'impression en une couleur, caractérisé
    - en ce que des informations concernant les mouvements de rotation de cylindres porte-clichés (Dn) sont enregistrées
    - et en utilisant les images (9) et les informations, des signaux de correction sont produits sur cette base,
    - qui commandent les acteurs des cylindres porte-clichés (Dn) aussi longtemps jusqu'à ce que l'écart des images en une couleur (6) des dispositifs d'encrage respectifs (Fn) d'une position de consigne sur le tissu d'impression (1) se situe à l'intérieur de valeurs de tolérance déterminées caractérisé
    - en ce que pendant le processus de repérage, il se trouve successivement à chaque fois un cylindre porte-clichés (Dn) en position d'impression,
    - en ce qu'au moins une station de capteurs (S) enregistre les images d'impression en une couleur (6) produites, et
    en ce que les signaux de correction pour le ou les acteurs d'un cylindre porte-clichés (Dn) sont obtenus sur la base d'une image en une couleur du cylindre porte-clichés respectif (Dn) et des informations se rapportant aux mouvements de rotation d'au moins un cylindre porte-clichés (Dn).
  2. Procédé selon la revendication 1, caractérisé en ce que pendant le processus de repérage, au moins un cylindre porte-clichés (Dn), qui ne se trouve pas en position d'impression, continue à être entraîné.
  3. Procédé selon l'une des deux revendications précédentes, caractérisé en ce qu'au moins un cylindre porte-clichés entraîné précité (Dn), qui ne se trouve pas en position d'impression, est entraîné à la même vitesse périphérique que le cylindre en train d'imprimer (Dn).
  4. Procédé selon la revendication précédente, caractérisé en ce que les informations se rapportant aux mouvements de rotation d'au moins un cylindre porte-clichés entraîné (Dn), qui ne se trouve pas en position d'impression, sont utilisées pour déterminer les signaux de correction.
  5. Procédé selon la revendication précédente, caractérisé en ce que les informations se rapportant aux mouvements de rotation d'un cylindre porte-clichés (Dn), qui ne se trouve pas en position d'impression, sont utilisées pour déterminer les signaux de correction.
  6. Procédé selon la revendication précédente, caractérisé en ce que les informations se rapportant aux mouvements de rotation du cylindre porte-clichés (Dn), qui s'est trouvé en premier en position d'impression, sont utilisées pour déterminer les signaux de correction.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que le procédé est utilisé pour un pré-repérage.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que la position des différentes images d'impression (6) est représentée sur au moins un écran (7) dans un contexte fonctionnel, de préférence linéaire à la position, que les images d'impression ont occupé respectivement à l'instant d'une position angulaire spécifique des cylindres porte-clichés (Dn).
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que les images d'impression (6) qui sont imprimées par différents cylindres porte-clichés (Dn) sur des sections de face différentes du tissu d'impression (1), sont rendues visibles en même temps sur au moins un écran (7).
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce que le réglage de la position relative des images d'impression différentes (6) les unes relativement aux autres est au moins partiellement effectué en ce qu'un opérateur de machine observe au moins un écran (7) et procède aux réglages.
  11. Procédé selon l'une des revendications précédentes, caractérisé en ce que les images d'impression (6) sont représentées sur des sections de face différentes conjointement avec un marquage d'écran (8, 10) sur au moins un écran (7), qui explicite la position de consigne des images d'impression (6).
  12. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'au moins deux images d'impression (6) en une couleur sont rendues visibles sur au moins un écran (7), et en ce qu'un opérateur de machine munit des points de ces images d'impression (6) d'autres marquages.
  13. Procédé selon l'une des revendications précédentes,
    caractérisé
    en ce qu'un dispositif de commande prévoit d'autres marquages dans au moins deux images en une couleur.
  14. Procédé selon l'une des revendications précédentes, caractérisé en ce que le réglage de la position relative des images d'impression différentes entre elles est effectué au moins partiellement en ce qu'une unité de calcul détecte des modèles spécifiques dans au moins une des images d'impression (6), les compare avec leur position de consigne dans l'image en plusieurs couleurs et, sur la base de cette comparaison, calcule des signaux de correction.
  15. Procédé selon l'une des trois revendications précédentes,
    caractérisé
    en ce que le dispositif de commande met en rapport la position des autres marquages et/ou des modèles spécifiques dans les au moins deux en une couleur avec les informations se rapportent aux mouvements de rotation de cylindres porte-clichés (Dn),
    en ce que les signaux de correction sont obtenus sur la base des écarts relatifs de la position des marquages différents entre eux dans au moins deux images aux mouvements de rotation des cylindres porte-clichés (Dn),
    et en ce que la position de consigne des images sur le tissu d'impression est atteinte lorsque l'écart des marquages se situe à l'intérieur de certaines tolérances.
  16. Procédé selon l'une des revendications précédentes, caractérisé en ce que la position de consigne est déterminée sur la base de la position d'une image d'impression (Dn) sur le tissu d'impression.
  17. Procédé selon l'une des revendications précédentes, caractérisé en ce que le repérage est basé sur des images d'impression (6) en une couleur qui ont été prises pendant le processus de rapprochement.
  18. Rotative, qui comporte des moyens pour exécuter les étapes du procédé selon l'une des revendications 1 -17 contenant :
    - des dispositifs d'encrage (Fn) avec des images d'impression (Dn) produisent respectivement des images d'impression (6) en une couleur et les impriment les unes sur les autres en images d'impression en n couleurs,
    - au moins une station de capteurs (S) avec laquelle des images (6) de tissu d'impression imprimé (1) sont enregistrable, cependant la station de capteurs (S) enregistre des images d'impression en une couleur, caractérisé
    - en ce que de transmitteur de vitesse est prévu pour enregistre des informations concernant les mouvements de rotation de cylindres porte-cliché (Dn)
    - en ce qu'un appareil de commande est prévu pour la production des signaux de correction en utilisant des images (6) et des informations, cependant les acteurs des cylindres porte-clichés (Dn) sont commandés jusqu'à ce que l'écart des images en une couleur (6) des dispositifs d'encrage respectifs (Fn) d'une position de consigne sur le tissu d'impression (1) se situe à l'intérieur de valeurs de tolérance déterminées,
    - en ce que pendant le processus de repérage, il se trouve successivement à chaque fois un cylindre porte-clichés (Dn) en position d'impression,
    - en ce qu'au moins une station de capteurs (S) enregistre les images d'impression en une couleur (6) produites et
    - en ce qu'avec l'appareil de commande les signaux de correction pour le ou les acteurs d'un cylindre porte-clichés respectif (Dn) sont obtenus sur la base d'une image en une couleur de cylindre porte-clichés respectif (Dn) et des informations se rapportant aux mouvements de rotation d'au moins un cylindre porte-clichés (Dn).
  19. Rotative selon la revendication précédente,
    caractérisée
    par au moins une station de capteurs (S) qui est disposée dans la direction de passage (z) de la bande de tissu d'impression (1) en aval du dernier dispositif d'encrage (Fn).
  20. Rotative selon la revendication précédente caractérisée par une station de capteurs (S) qui comprend deux systèmes de caméra dont un convient pour la détection de toute la face d'impression (6) avec une définition plus petite et le deuxième pour détecter une face partielle d'une définition plus élevée.
EP06706321.4A 2005-02-03 2006-01-19 Procede de reperage Active EP1843898B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005004972A DE102005004972A1 (de) 2005-02-03 2005-02-03 Registerverfahren
PCT/EP2006/000480 WO2006081950A1 (fr) 2005-02-03 2006-01-19 Procede de reperage

Publications (3)

Publication Number Publication Date
EP1843898A1 EP1843898A1 (fr) 2007-10-17
EP1843898B1 EP1843898B1 (fr) 2008-07-30
EP1843898B2 true EP1843898B2 (fr) 2013-08-14

Family

ID=36287362

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06706321.4A Active EP1843898B2 (fr) 2005-02-03 2006-01-19 Procede de reperage

Country Status (6)

Country Link
US (1) US7966935B2 (fr)
EP (1) EP1843898B2 (fr)
AT (1) ATE402816T1 (fr)
DE (2) DE102005004972A1 (fr)
ES (1) ES2308716T5 (fr)
WO (1) WO2006081950A1 (fr)

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ES2339691T5 (es) † 2006-10-23 2014-07-18 Bobst Bielefeld Gmbh Procedimiento de ajuste de un rodillo en una prensa de imprimir giratoria
EP2221178B1 (fr) * 2009-02-24 2015-10-28 Baumüller Anlagen-Systemtechnik GmbH & Co. KG Procédé et système d'entraînement électrique destiné à la synchronisation de plusieurs pièces fonctionnelles mobiles dans des machines
DE102010052576A1 (de) * 2010-11-25 2012-05-31 Robert Bosch Gmbh Verfahren zur Registerregelung mehrerer Bearbeitungseinrichtungen unter Verwendung eines einzigen Registersensors sowie einer einzigen Registerregeleinheit
IT1403496B1 (it) 2010-12-27 2013-10-17 Uteco Converting Spa Sistema e procedimento di regolazione e controllo delle pressioni di cilindri di stampa in una macchina da stampa flessografica a tamburo centrale
ES2395183B1 (es) 2011-08-12 2013-11-28 Comexi Group Industries, Sau Método para ajuste de presiones en una máquina impresora flexográfica y máquina impresora flexográfica para su implementación.
US10315412B2 (en) 2012-05-02 2019-06-11 Advanced Vision Technology (Avt) Ltd. Method and system for registering printing stations of a printing press
IL226120A (en) 2012-05-02 2017-01-31 Advanced Vision Tech (Avt) Ltd METHOD AND SYSTEM FOR REGISTERING PRINTING PRINTERS
DE102012017575A1 (de) * 2012-09-06 2014-03-06 Robert Bosch Gmbh Verfahren zum Regeln eines Bearbeitungsregisters in einer Bahnbearbeitungsmaschine mit variabler Klemmung
DE102015210443B4 (de) * 2015-06-08 2017-12-14 Koenig & Bauer Ag Vorrichtung zum Vermessen und/oder Kontrollieren von einem auf einem Substrat angeordneten typografischen Element
EP3251849A1 (fr) * 2016-05-31 2017-12-06 Windmöller & Hölscher KG Machine d'impression flexographique
EP3273674B1 (fr) 2016-07-18 2020-10-28 Advanced Vision Technology (AVT) Ltd. Procédé et système permettant d'enregistrer des stations d'impression d'une presse à imprimer
IL254078A0 (en) 2017-08-21 2017-09-28 Advanced Vision Tech A V T Ltd Method and system for creating images for testing

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Also Published As

Publication number Publication date
EP1843898A1 (fr) 2007-10-17
US7966935B2 (en) 2011-06-28
WO2006081950A1 (fr) 2006-08-10
ES2308716T5 (es) 2013-12-16
DE502006001240D1 (de) 2008-09-11
EP1843898B1 (fr) 2008-07-30
US20080156210A1 (en) 2008-07-03
DE102005004972A1 (de) 2006-08-10
ES2308716T3 (es) 2008-12-01
ATE402816T1 (de) 2008-08-15

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