EP0353228A1 - Process for positioning plate cylinders in a multicolour rotary printing press. - Google Patents

Process for positioning plate cylinders in a multicolour rotary printing press.

Info

Publication number
EP0353228A1
EP0353228A1 EP88902421A EP88902421A EP0353228A1 EP 0353228 A1 EP0353228 A1 EP 0353228A1 EP 88902421 A EP88902421 A EP 88902421A EP 88902421 A EP88902421 A EP 88902421A EP 0353228 A1 EP0353228 A1 EP 0353228A1
Authority
EP
European Patent Office
Prior art keywords
register
printed
plate cylinders
register mark
color
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.)
Granted
Application number
EP88902421A
Other languages
German (de)
French (fr)
Other versions
EP0353228B1 (en
Inventor
Friedrich Karl Bayerlein
Dietrich Roland Kamill Leuerer
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer 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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0353228A1 publication Critical patent/EP0353228A1/en
Application granted granted Critical
Publication of EP0353228B1 publication Critical patent/EP0353228B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a method for positioning plate cylinders in a multi-color rotary printing machine according to the preamble of the claim.
  • the scanning device is a video camera.
  • the camera is designed as a Vidikon or a so-called CCD camera and equipped with a zoom lens.
  • PCT application O86 / 05141 has disclosed a method and a device for carrying out the method for a multicolor rotary printing press, in which the plate cylinders can be positioned relative to one another in accordance with the deviation of the register marks from one another.
  • a group of markings on the print carrier is made using a video camera. This image is converted into a numerical image and compared with an "analysis window".
  • the "analysis window” consists of a reference point to which a marking on the print carrier is assigned.
  • a disadvantage of the method according to the citation is that the color register marks are designed as points of approximately 1 mm in diameter and are arranged as corner points of an imaginary square with an edge length of approximately 10 mm. However, this type of register point is difficult to record electronically. Faults on the print medium around or within the
  • Register mark squares could be incorrectly evaluated as a register point by the electronics.
  • a leading, additional, bar-shaped trigger register mark is necessary.
  • the position of each point must be calculated for each point in the X and Y directions. If the electronics fail, the printer is less able to visually recognize the register deviation from the marks, as they can be up to 10 mm apart. Due to the large distance between the color register marks, it is not possible to measure the distances between the marks in the measuring microscope. Because the color register points on different levels the individual distances have to be calculated when the screen is displayed. Another disadvantage of the method according to this document is that the entire "analysis window" must be evaluated. This means that you need a computer with a larger capacity if you want to keep the evaluation time short.
  • the invention has for its object to provide a method with which it is possible to the color register (longitudinal and side register)
  • the advantages that can be achieved with the invention consist in particular in that the offset of the register marks relative to one another can be measured directly in both the X and Y axis directions. So it does not need to be calculated particularly by computer. Because the register marks are designed as regular, geometric figures, it is possible by means of software check that only register marks and no faults on the print carrier are evaluated. It is also easy for the printer to visually check the position of the register marks relative to one another on a screen. For this it is only necessary to display a scale in the X and Y directions in the image on the screen. It is also not necessary to evaluate the entire "analysis window". As a rule, only the immediate environment around the center of the "analysis window" needs to be evaluated. Only in extreme cases must the entire "analysis window” be read and evaluated digit by digit. As a result, the decision-making and introduction of adjustment inputs is faster than with the citation method, provided the same computing capacity.
  • Figure 1 is a plan view of a schematically illustrated four-color rotary printing press, but without the inking unit, but with the associated plate cylinders.
  • FIG. 2 embodiment of the register mark images or prints according to the invention in a four-color print (first embodiment);
  • FIG. 3 shows a further embodiment of the register mark images or register imprints according to the invention, shown for a four-color print;
  • Fig. 4 is a schematic representation of the measuring device.
  • PCT patent application WO86 / 05141 shows and describes how color register marks for multi-color printing on a print carrier, e.g. B. a paper web, are printed and captured by a color video camera and the video signals are evaluated in a computer.
  • This PCT patent application also shows where and how color register marks are arranged on the print carrier. It is therefore unnecessary to do this in detail
  • Multi-color printing process and to describe the means for adjusting the plate cylinder in its longitudinal axis direction about its longitudinal axis.
  • a printing medium 1 runs through four printing units, 2, 3, 4, 6.
  • Each of the printing units 2, 3, 4, 6 consists in a known manner of an impression cylinder, a rubber cylinder, a plate cylinder and an inking unit.
  • the plate cylinders 7, 8, 9, 11 are shown with their pressure plates 12, 13, 14, 16 (viewed in the direction of the print carrier).
  • Each of the z. B. four printing plates 12, 13, 14, 16 is provided with a register mark image 17 or 18 or 19 or 21 and depending on the color z. B.
  • the register mark images 17, 18, 19 and 21 and thus the register mark impressions 17 ', 18', 19 'and 21' are designed as regular figures, preferably as closed squares or as circles approx. 0.01 - 0.05 mm wide in the printed state
  • the register mark images 17, 18, 19 and 21 all have different sizes from one another, ie their diameters are different.
  • Image scanner 22 are used, as z. B. is known in principle from DE-OS 31 88 699 and PCT patent application WO86 / 05141.
  • the measured deviations x. , ⁇ admir, and y-, y ⁇ , y 3 at z. B. a four-color print are then fed to the rotation of the plate cylinders 7, 8, 9, 11 relative to each other in the circumferential direction (longitudinal register) and for displacement in the axial direction as actual values of a controlled system, with setpoints (1 x, 2 x, 3 x) 1 times y, 2 times y, 3 times y) and adjusted values are formed therefrom and by means of adjusting devices 24, 26, 27 attached to the plate cylinders 7, 8, 9, 11, the plate cylinders 7 to 11 are mutually circumferential and / or Adjusted longitudinal direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

Des repères sous forme de figures géométriques régulières de tailles différentes, par exemple des cercles ou des carrés, sont imprimés les uns à l'intérieur des autres et leur position relative est évaluée dans le sens de l'axe des X et/ou des Y.Marks in the form of regular geometric figures of different sizes, for example circles or squares, are printed inside each other and their relative position is evaluated in the direction of the X and / or Y axis .

Description

Beschreibung description
Verfahren zum Positionieren von Plattenzylindern in ein Mehrfarben-RotationsdruckmaschineProcess for positioning plate cylinders in a multicolor rotary printing press
Die Erfindung betrifft ein Verfahren zum Positionieren Plattenzylindern in einer Mehrf rben-Rotationsdruckmasc gemäß dem Oberbegriff des Patentanspruches.The invention relates to a method for positioning plate cylinders in a multi-color rotary printing machine according to the preamble of the claim.
Durch die Veröffentlichung der DeutschenThrough the publication of the Germans
Forschungsgesellschaft für Druck- und Reproduktionstech e.V., "Technische Vorträge 1971" ist im Aufsatz "Anwend der Fernsehbildbewertung für Meßaufgaben aus der Drucktechnik" bekanntgeworden, das Videosignal von Fernsehkameras zur Bewertung von Druckerzeugnissen zu verwenden. Auch ist aus dieser Veröffentlichung bekannt geworden, Bilder eventuell optisch zu vergrößer um zu erreichen, daß ein zu bewertendes Bildelement von ausreichend vielen Fernsehzeilen geschnitten wird.Research Society for Printing and Reproduction Tech, "Technical Lectures 1971" has become known in the essay "Use of television image evaluation for measurement tasks from printing technology" to use the video signal from television cameras for evaluating printed products. It has also become known from this publication that images may be optically enlarged in order to ensure that a picture element to be evaluated is cut by a sufficient number of television lines.
Durch die DE-OS 31 38 699 ist eine Einrichtung zur Erfassung von Bildvorlagen bekannt geworden, bei der die Abtasteinrichtung eine Videokamera ist. Die Kamera ist dabei als Vidikon- oder als sogenannte CCD-Kamera ausgeführt und mit einem Zoomobjektiv ausgestattet.From DE-OS 31 38 699 a device for capturing images has become known, in which the scanning device is a video camera. The camera is designed as a Vidikon or a so-called CCD camera and equipped with a zoom lens.
Die DE-OS 24 55 973 beschreibt eine optische Zeichenlesevorrichtung, mit der es möglich ist, das Videosignal zu digitalisieren. Durch die PCT-Anmeldung O86/05141 ist ein Verfahren und eine Vorrichtung zur Durchführung des Verfahrens für eine Mehrfarben-Rotationsdruckmaschine bekanntgeworden, bei dem die Plattenzylinder zueinander entsprechend des Abweichens der Registermarken voneinander positioniert werden können. Hierzu wird mittels einer Videokamera eine Gruppe von auf dem Druckträger befindlichen Markierungen gemacht. Dieses Bild wird in ein numerisches Bild umgerechnet und mit einem "Analysefenster" verglichen Das "Analysefenster" besteht aus einem Bezugspunkt, dem eine Markierung auf dem Druckträger zugeordnet ist.DE-OS 24 55 973 describes an optical character reading device with which it is possible to digitize the video signal. PCT application O86 / 05141 has disclosed a method and a device for carrying out the method for a multicolor rotary printing press, in which the plate cylinders can be positioned relative to one another in accordance with the deviation of the register marks from one another. For this purpose, a group of markings on the print carrier is made using a video camera. This image is converted into a numerical image and compared with an "analysis window". The "analysis window" consists of a reference point to which a marking on the print carrier is assigned.
Nachteilig beim Verfahren nach der Entgegenhaltung ist, daß die Farbregistermarken als Punkte von ca. 1 mm Durchmesser ausgeführt sind und als EckpunKte eines gedachten Quadrates mit einer Kantenlänge von ca. 10 mm angeordnet sind. Diese Art von Registerpunkten ist jedoch schlecht elektronisch zu erfassen. Störungen auf dem Druckträger um das oder innerhalb desA disadvantage of the method according to the citation is that the color register marks are designed as points of approximately 1 mm in diameter and are arranged as corner points of an imaginary square with an edge length of approximately 10 mm. However, this type of register point is difficult to record electronically. Faults on the print medium around or within the
Registermarkenquadrates könnten fälschlicherweise als Registerpunkt von der Elektronik ausgewertet werden. Bei punktförmigen Registermarken ist eine vorauslaufende, zusätzliche, balkenförmige Trigger-Registermarke notwendig Außerdem muß die Lage jedes Punktes zu jedem Punkt in X- und Y-Richtung errechnet werden. Bei Ausfall der Elektroni kann der Drucker schlechter visuell die Registerabweichung an den Marken erkennen, da sie bis 10 mm und mehr voneinander entfernt sein können. Durch den großen Abstand der Farbregistermarken ist es nicht möglich, die Abstände der Marken im Meßmikroskop zu messen. Da die Farbregisterpunkte auf voneinander verschiedenen Ebenen liegen, müssen bei Bildschirmanzeige auch die einzelnen Abstände erst errechnet werden. Weiter ist nachteilig beim Verfahren nach dieser Entgegenhaltung, daß das gesamte "Analysefenster" ausgewertet werden muß. Das bedeutet, daß man einen Rechner mit größerer Kapazität benötigt, wenn man die Auswertezeit klein halten will.Register mark squares could be incorrectly evaluated as a register point by the electronics. In the case of punctiform register marks, a leading, additional, bar-shaped trigger register mark is necessary. In addition, the position of each point must be calculated for each point in the X and Y directions. If the electronics fail, the printer is less able to visually recognize the register deviation from the marks, as they can be up to 10 mm apart. Due to the large distance between the color register marks, it is not possible to measure the distances between the marks in the measuring microscope. Because the color register points on different levels the individual distances have to be calculated when the screen is displayed. Another disadvantage of the method according to this document is that the entire "analysis window" must be evaluated. This means that you need a computer with a larger capacity if you want to keep the evaluation time short.
Oder man verwendet einen kleineren Rechner und nimmt eine Verlängerung der Auswertezeit in Kauf. Hierdurch ist die Anwendung dieses Verfahrens für Schnellaufende Rollenrotationsdruckmaschinen (Bahngeschwindigkeit 15 m/Sek.) weniger geeignet.Or you can use a smaller computer and accept an extension of the evaluation time. This makes the application of this method less suitable for high-speed web-fed rotary printing presses (web speed 15 m / sec.).
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zu schaffen, mit dem es möglich ist, das Farbregister (Längs- und Seitenregister) anThe invention has for its object to provide a method with which it is possible to the color register (longitudinal and side register)
Mehrfarben-Rotationsdruckmaschinen unter Einsatz einer Farbvideokamera zu messen und Abweichungen von einem Sollwert festzustellen, ohne daß es in jedem Falle notwendig ist, das gesamte Meßfenster auszuwerten.To measure multicolor rotary printing presses using a color video camera and to determine deviations from a target value without it being necessary in any case to evaluate the entire measurement window.
Diese Aufgabe wird erfindungsgeπtäß durch den kennzeichnenden Teil des Anspruchs 1 gelöst.This object is achieved according to the invention by the characterizing part of claim 1.
Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß sowohl in X- als auch in Y-Achsrichtung direkt der Versatz der Registermarken zueinander gemessen werden kann. Er braucht also nicht besonders mittels Computer berechnet zu werden. Dadurch, daß die Registermarken als regelmäßige, geometrische Figuren ausgebildet sind, ist es möglich mittels Software zu kontrollieren, daß nur Registermarken und keine Störungen auf dem Druckträger ausgewertet werden. Auch ist eine visuelle Kontrolle der Lage der Registermarken zueinander auf einem Bildschirm durch den Drucker leicht möglich. Hierzu ist es nur notwendig, einen Maßstab in X-, und Y-Richtung in das Bild auf dem Bildschirm einzublenden Auch ist es nicht notwendig, das gesamte "Analysefenster" auszuwerten. Es muß in der Regel nur das unmittelbare Umfeld um das Zentrum des "Analysefensters" ausgewertet werden. Nur in Extremfällen muß das gesamte "Analysefenster" Digit für Digit gelesen und ausgewertet werden. Hierdurch ist die Entscheidungsfindung und Einleitung von Verstelleingängen schneller als bei dem Verfahren der Entgegenhaltung, gleiche Rechnerkapazität vorausgesetzt.The advantages that can be achieved with the invention consist in particular in that the offset of the register marks relative to one another can be measured directly in both the X and Y axis directions. So it does not need to be calculated particularly by computer. Because the register marks are designed as regular, geometric figures, it is possible by means of software check that only register marks and no faults on the print carrier are evaluated. It is also easy for the printer to visually check the position of the register marks relative to one another on a screen. For this it is only necessary to display a scale in the X and Y directions in the image on the screen. It is also not necessary to evaluate the entire "analysis window". As a rule, only the immediate environment around the center of the "analysis window" needs to be evaluated. Only in extreme cases must the entire "analysis window" be read and evaluated digit by digit. As a result, the decision-making and introduction of adjustment inputs is faster than with the citation method, provided the same computing capacity.
Zur Erklärung der Erfindung sind die nachfolgenden Zeichnungen vorausgesetzt:The following drawings are required to explain the invention:
Es zeigen:Show it:
Fig. 1 eine Draufsicht auf eine schematisch dargestellte Vierf rben-Rotationsdruckmaschine, ohne Farbwerk jedoch mit den dazugehörigen Plattenzylindern;Figure 1 is a plan view of a schematically illustrated four-color rotary printing press, but without the inking unit, but with the associated plate cylinders.
Fig. 2 erfindungsgemäße Ausführungsform der Registermarke Bilder bzw. -Abdrucke bei einem Vierfarbendruck (erstes Ausführungsbeispiel);Fig. 2 embodiment of the register mark images or prints according to the invention in a four-color print (first embodiment);
Fig. 3 eine weitere Ausführungsform der erfindungsgemäße Registermarken-Bilder bzw. Register-Abdrucke, dargestellt für einen Vierfarbendruck;3 shows a further embodiment of the register mark images or register imprints according to the invention, shown for a four-color print;
Fig. 4 eine schematische Darstellung der Meßeinrichtung.Fig. 4 is a schematic representation of the measuring device.
In der PCT-Patentanmeldung WO86/05141 ist dargestellt und beschrieben, wie Farbregistermarken für einen Mehrfarbendruck auf einen Druckträger, z. B. eine Papierbahn, aufgedruckt werden und mittels einer Farbvideokamera erfasst und in einem Rechner die Videosignale ausgewertet werden. Außerdem ist aus dieser PCT-Patentanmeldung zu entnehmen, wo und wie Farbregistermarken auf dem Druckträger angeordnet sind. Daher erübrigt es sich, im Detail dasPCT patent application WO86 / 05141 shows and describes how color register marks for multi-color printing on a print carrier, e.g. B. a paper web, are printed and captured by a color video camera and the video signals are evaluated in a computer. This PCT patent application also shows where and how color register marks are arranged on the print carrier. It is therefore unnecessary to do this in detail
Mehrfarbendruckverfahren und die Mittel zum Verstellen der Plattenzylinder in ihrer Längsachsenrichtung um ihre Längsachse zu beschreiben.Multi-color printing process and to describe the means for adjusting the plate cylinder in its longitudinal axis direction about its longitudinal axis.
Ein Druckträger 1 durchläuft vier Druckeinheiten, 2, 3, 4, 6. Jede der Druckeinheiten 2, 3, 4, 6 besteht in bekannter Weise aus einem Gegendruckzylinder, einem Gummizylinder, einem Plattenzylinder und einem Farbwerk. In der Zeichnung sind lediglich die Plattenzylinder 7, 8, 9, 11 mit ihren Druckplatten 12, 13, 14, 16 (in Druckträgerlaufrichtung gesehen) dargestellt.A printing medium 1 runs through four printing units, 2, 3, 4, 6. Each of the printing units 2, 3, 4, 6 consists in a known manner of an impression cylinder, a rubber cylinder, a plate cylinder and an inking unit. In the drawing, only the plate cylinders 7, 8, 9, 11 are shown with their pressure plates 12, 13, 14, 16 (viewed in the direction of the print carrier).
Für jede zu druckende Farbe ist ein eigenes Registermarken-Bild auf der Druckplatte vorhanden, wobei für jede Farbe eine Druckplatte und ein Plattenzylinder vorgesehen ist. Bei z. B. einem Vierfarbendruck sind vier Druckplatten 12, 13, 14, 16 notwendig. Als Beispiel werden nachfolgend die Vorgänge beim Vierfarbendruck beschrieben. Jede der z. B. vier Druckplatten 12, 13, 14, 16 ist mit je einem Registermarken-Bild 17 bzw. 18 bzw. 19 bzw. 21 versehen und gibt je nach Farbigkeit z. B. in der Reihenfolge schwarz-blau-rot-gelb den entsprechenden Abdruck 17', 18', 19' bzw. 21" auf den Druckträger 1 ab, wobei 17* in schwarz, 18' in blau, 19' in rot und 21' in gelb gedruckt wird. Die Registermarken-Bilder 17, 18, 19 und 21 und damit die Registermarken-Abdrucke 17', 18' , 19' und 21 ' sind als regelmäßige Figuren vorzugsweise als geschlossene Quadrate oder als Kreise gestaltet. Ihre Linien sind im gedruckten Zustand ca. 0,01 - 0,05 mm breit Die Registermarken-Bilder 17, 18, 19 und 21 haben alle voneinander verschiedene Größen, d.h. ihre Durchmesser sind unterschiedlich.There is a separate register mark image for each color to be printed on the printing plate, a printing plate and a plate cylinder being provided for each color. At z. B. four-color printing, four printing plates 12, 13, 14, 16 are necessary. The processes in four-color printing are described below as an example. Each of the z. B. four printing plates 12, 13, 14, 16 is provided with a register mark image 17 or 18 or 19 or 21 and depending on the color z. B. in the order black-blue-red-yellow the corresponding imprint 17 ', 18', 19 'or 21 "from the print carrier 1, with 17 * in black, 18' in blue, 19 'in red and 21st The register mark images 17, 18, 19 and 21 and thus the register mark impressions 17 ', 18', 19 'and 21' are designed as regular figures, preferably as closed squares or as circles approx. 0.01 - 0.05 mm wide in the printed state The register mark images 17, 18, 19 and 21 all have different sizes from one another, ie their diameters are different.
In der Praxis wird man die Abmessunge der Registermarken- Bilder auf den Druckplatten so wählen, daß sie im Idealfal (= kein Registerversatz) so konzentrisch ineinanderdrucken daß - wie in der Fig. 2 und 3 dargestellt - zwischen den Konturen der ineinandergedruckten Registermarkenabdrucke 17' , 18', 19' und 21' die Abstände "x" und die Abstände "y" jeweils untereinander gleicn sind, z. B. 2 mm.In practice, the dimensions of the register mark images on the printing plates will be selected so that they ideally (= no register offset) print so concentrically that - as shown in FIGS. 2 and 3 - between the contours of the register mark impressions 17 ', 18 ', 19' and 21 'the distances "x" and the distances "y" are each the same, z. B. 2 mm.
Bei den gedruckten Registermarken-Abdrucken 17', 18', 19' und 21' sind die Abstände "x" bzw. "y" untereinander nicht gleich, sobald zwischen den einzelnen Farben das Längs- und/oder Seitenregister nicht stimmt.In the case of the printed register mark imprints 17 ', 18', 19 'and 21', the distances "x" and "y" are not the same as soon as the longitudinal and / or side register is not correct between the individual colors.
Um die Abweichungen der Registermarken-Abdrucke 17' bisTo the deviations of the register mark prints 17 'to
21' in ihre Lage voneinander, d. h. die Abstände in X- und Y-Achsenrichtung auszumessen, kann eine21 'in their position from each other, d. H. The distances in the X and Y axis directions can be measured
Bildabtasteinrichtung 22 eingesetzt werden, wie sie z. B. im Prinzip durch die DE-OS 31 88 699 und die PCT- Patentanmeldung WO86/05141 bekannt ist.Image scanner 22 are used, as z. B. is known in principle from DE-OS 31 88 699 and PCT patent application WO86 / 05141.
Die gemessenen Abweichungen x. , χ„, und y- , y~, y3 bei z. B. einem Vierfarbendruck werden dann zur Verdrehu der Plattenzylinder 7, 8, 9, 11 zueinander in Umfangsrichtung (Längsregister) und zur Verschiebung in axialer Richtung als Istwerte einer Regelstrecke zugeführt, mit Sollwerten (1 mal x, 2 mal x, 3 mal x, 1 mal y, 2 mal y, 3 mal y) verglichen und daraus Stellwerte gebildet und mittels an den Plattenzylindern 7, 8, 9, 11 angebrachten Stelleinrichtungen 24, 26, 27, werden die Plattenzylinder 7 bis 11 zueinander in .Umfang und/ oder Längεachsrichtung verstellt.The measured deviations x. , χ „, and y-, y ~, y 3 at z. B. a four-color print are then fed to the rotation of the plate cylinders 7, 8, 9, 11 relative to each other in the circumferential direction (longitudinal register) and for displacement in the axial direction as actual values of a controlled system, with setpoints (1 x, 2 x, 3 x) 1 times y, 2 times y, 3 times y) and adjusted values are formed therefrom and by means of adjusting devices 24, 26, 27 attached to the plate cylinders 7, 8, 9, 11, the plate cylinders 7 to 11 are mutually circumferential and / or Adjusted longitudinal direction.
Diese Veränderungen der Abstände innerhalb eines Satzes 17" , 18' 19' und 21 ' von Registermarken-Abdrucken werden in X- oder Y-Achsenrichtung elektronisch ausgemessen und auf z. B. den innersten Registermarken-Abdruck 17' bezogen. Man erhält so die Abstände x1 , x„, χ_, der Registermarken-Abdrucke 18' , 19' und 21 ' von dem innerst Registermarken-Abdruck 17' in X-Achsenrichtung und/oder die Abstände y. , y~, y-, der Registermarken-Abdrucke 18' , 19' und 21 ' in Y-Achsenrichtung vom innersten Registermarken-Abdruck 17'.These changes in the distances within a set 17 ", 18 '19' and 21 'of register mark imprints are electronically measured in the X or Y axis direction and are related, for example, to the innermost register mark imprint 17' Distances x 1 , x ", χ_, the register mark imprints 18 ', 19' and 21 'from the innermost register mark imprint 17' in the X-axis direction and / or the distances y., Y ~, y-, the register mark Imprints 18 ', 19' and 21 'in the Y-axis direction from the innermost register mark imprint 17'.
Diese Messungen werden fortlaufend für z. B. jedes gedruckte mehrfarbige Druckbild durchgeführt, da neben jedem z. B. vierfarbigem Druckbild auch vier Registermarken-Bilder 17' , 18' , 19' und 21' in Form von Begrenzungs-Linien von ineinander gedruckter, verschieden großer z. B. Kreise oder Quadrate, wobei sich diese Kreise oder Quadrate nur schneiden oder berühren, wenn Längs- oder Seitenregisterfehler da sind.These measurements are continuously for z. B. performed every printed multicolor print image, because in addition to each z. B. four-color printed image also four register mark images 17 ', 18', 19 'and 21' in the form of boundary lines of interleaved, different sizes z. B. circles or squares, these circles or squares only intersect or touch when there are longitudinal or side register errors.
Nachdem fortlaufend sämtliche Registermarken-Abdrucke 17' bis 21 ' für jeweils ein gedrucktes Bild des Mehrfarbendruckes in eine vorgesehene Fläche auf dem Druckträger 1 gedruckt sind, wird ihre Lage im X, Y- Koordinatensystem in X- und Y-Richtung während des Laufes des Druckträgers 1 fortlaufend mittels einer Videokamera 22 erfaßt. Anschließend werden die Abstände x,, 2 ' x3 ιn X-Achsenrichtung und y. , y2, y3 in Y-Achsenrichtung von z. B. der Begrenzungslinie des kleinsten Registermarken-Abdruckes 17' zu den anderen Registermarken-Abdrucken 18', 19', 21' elektronisch gemessen. Diese Werte werden laufend mit Sollwerten verglichen und der Differenzwert mittels einer Regeleinrichtung 23 fortwährend in einen Stellwert für jeden Plattenzylinder 7, 8, 9, 11 bzw. Platte 12, 13, 14, 16 umgewandelt, um die einzelnen Plattenzylinder 7, 8, 9, 11 in ihrer Längsachsenrichtung und/oder in Umfangsrichtung zusätzlich in oder entgegen ihrer Rotationεrichtung zu verdrehen. Derartige Stelleinrichtungen 24, 26, 27, 28 sind seit langem bekannt und sind nicht Gegenstand dieser Anmeldung. TeilelisteAfter all of the register mark imprints 17 'to 21' for one printed image of the multicolor print have been continuously printed on a designated area on the print carrier 1, their position in the X, Y coordinate system in the X and Y directions becomes during the run of the print carrier 1 continuously recorded by means of a video camera 22. Then the distances x ,, 2 ' x 3 ιn X-axis direction and y. , y 2 , y 3 in the Y-axis direction of z. B. the boundary of the smallest register mark imprint 17 'to the other register mark imprints 18', 19 ', 21' electronically measured. These values are continuously compared with target values and the difference value is continuously converted into a manipulated value for each plate cylinder 7, 8, 9, 11 or plate 12, 13, 14, 16 by means of a control device 23 in order to determine the individual plate cylinders 7, 8, 9, 11 in their longitudinal axis direction and / or in the circumferential direction additionally in or against their direction of rotation. Such actuators 24, 26, 27, 28 have long been known and are not the subject of this application. Parts list
1 Druckträger1 print carrier
2 Druckeinheit2 printing unit
3 Druckeinheit3 printing unit
4 Druckeinheit 54 printing unit 5
6 Druckeinheit6 printing unit
7 Plattenzylinder7 plate cylinders
8 Plattenzylinder8 plate cylinders
9 Plattenzylinder 109 plate cylinder 10
11 Plattenzylinder11 plate cylinders
12 Druckplatte12 pressure plate
13 Druckplatte13 pressure plate
14 Druckplatte 1514 pressure plate 15
16 Druckplatte16 pressure plate
17 Regiεtermarken-Bild 17' Registermarken-Abdruck17 Register mark image 17 'Register mark imprint
18 Registermarken-Bild 18' Registermarken-Abdruck18 Register mark image 18 'Register mark imprint
19 Registermarken-Bild 19' Registermarken-Abdruck 0 1 Registermarken-Bild 1 ' RegistermarKen-Abdruck 2 Videokamera 3 Regeleinrichtung 4 Stelleinrichtung 5 6 Stelleinrichtung 7 Stelleinrichtung 8 Stelleinrichtung 19 Register mark image 19 'Register mark imprint 0 1 Register mark image 1' Register mark imprint 2 Video camera 3 Control device 4 Actuator 5 6 Actuator 7 Actuator 8 Actuator

Claims

Patentansprüche Claims
1. Verfahren zum Positionieren von Plattenzylindern zueinander in einer Mehrfarben-Rotationsdruckmaschine, wobei pro Druckzylinder und Farbe auf einen Druckträger eine Passermarke aufgedruckt wird, die Lagen dieser Passermarken auf einer Seite des Druckträgers mittels einer elektrischen Bildabtasteinrichtung erfaßt werden, ihre Abstände in X- und Y-Achsenrichtung voneinander gemessen und anschließend in einer elektrischen Einrichtung (Regelung) zu Stellwerten für die Verstellung der Plattenzylinder zueinander in axialer Richtung und/oder Umfangsrichtung umgewandelt werden, dadurch gekennzeichnet, daß nacheinander eine Mehrzahl von geometrisch regelmäßigen Figuren mit dünn Begrenzungslinien und voneinander verschieden großen Abmessungen in einen vorgesehenen Bereich auf einer Seite des Druckträgers ( 1 ) als Registermarken-Abdrucke (17' , 18' , 19' , 21 ') gedruckt werden.1. Method for positioning plate cylinders in relation to one another in a multicolor rotary printing press, wherein a registration mark is printed on a printing medium for each printing cylinder and color, the positions of these registration marks on one side of the printing medium are detected by means of an electrical image scanner, their distances in X and Y. -Axis direction measured from each other and then converted in an electrical device (control) to control values for the adjustment of the plate cylinders to each other in the axial direction and / or circumferential direction, characterized in that successively a plurality of geometrically regular figures with thin boundary lines and dimensions different from each other in a designated area on one side of the print carrier (1) as register mark imprints (17 ', 18', 19 ', 21') are printed.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Figuren in Form von Quadraten unterschiedlicher Größe aufgedruckt werden.2. The method according to claim 1, characterized in that the figures are printed in the form of squares of different sizes.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Figuren in Form von Kreisen unterschiedlicher Größe aufgedruckt werden. 3. The method according to claim 1, characterized in that the figures are printed in the form of circles of different sizes.
EP88902421A 1987-03-26 1988-03-25 Process for positioning plate cylinders in a multicolour rotary printing press Expired - Lifetime EP0353228B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3709951 1987-03-26
DE3709951 1987-03-26
DE3809941 1988-03-24
DE3809941A DE3809941A1 (en) 1987-03-26 1988-03-24 METHOD FOR POSITIONING PLATE CYLINDERS IN A MULTI-COLOR ROTARY PRINTING MACHINE

Publications (2)

Publication Number Publication Date
EP0353228A1 true EP0353228A1 (en) 1990-02-07
EP0353228B1 EP0353228B1 (en) 1992-01-02

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US (1) US5056430A (en)
EP (1) EP0353228B1 (en)
JP (1) JPH02501373A (en)
DE (2) DE3809941A1 (en)
WO (1) WO1988007449A1 (en)

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Also Published As

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WO1988007449A1 (en) 1988-10-06
DE3809941A1 (en) 1988-10-06
JPH02501373A (en) 1990-05-17
EP0353228B1 (en) 1992-01-02
US5056430A (en) 1991-10-15
DE3867469D1 (en) 1992-02-13

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