EP1622770B1 - Polychrome rotary press - Google Patents

Polychrome rotary press Download PDF

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Publication number
EP1622770B1
EP1622770B1 EP04731376A EP04731376A EP1622770B1 EP 1622770 B1 EP1622770 B1 EP 1622770B1 EP 04731376 A EP04731376 A EP 04731376A EP 04731376 A EP04731376 A EP 04731376A EP 1622770 B1 EP1622770 B1 EP 1622770B1
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EP
European Patent Office
Prior art keywords
printing
information
printing forme
carrier
carriers
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.)
Expired - Lifetime
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EP04731376A
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German (de)
French (fr)
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EP1622770A1 (en
Inventor
Martin Krümpelmann
Manfred Loddenkötter
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Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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    • 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
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/10—Starting-up the machine
    • B41P2233/13—Pre-registering
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/36—Means for registering or alignment of print plates on print press structure

Definitions

  • Such machines are designed for example as flexographic and gravure printing machines.
  • the term "printing plate” is to be understood all possible sleeves or flexible mats, which carry a printing plate.
  • a cylinder pressure-bearing cylinder which are supported by pins or bearings.
  • sleeves which are striped over a cylinder, have recently been used.
  • packaging printing in particular, many different colors are used, so that the requirements for register accuracy play a major role here. Register accuracy also plays a role in other areas and in the use of other printing methods.
  • register accuracy also plays a role in other areas and in the use of other printing methods.
  • the US 3963902 and the EP1205300 A1 show register methods with which the positions of different printing cylinders are matched during the printing operation.
  • various information carrier which are mounted near a front end of the printing cylinder.
  • Flexographic printing machines of the prior art by the orientation of the printing plate - usually a printing sleeve or a sleeve - on a projecting in the radial direction over the peripheral surface of the printing cylinder pin.
  • the pressure sleeve or the sleeve in turn has a recess into which the pin fits relatively accurately. It is laborious for the operator to properly align the sleeve. This activity is often referred to as a pre-registration.
  • This game is greatly increasing in particular when made of plastic, often changed printing plates of flexographic printing with the life. Slippage of printing plates during operation on the mandrels or cylinders on which they are seated can cause register errors or increase during operation.
  • the mandrel is then rotated with the sleeve stopped so that sets a relative target position between the sleeve and mandrel.
  • US 6,314,883 shows a register method in which a mounted on a sleeve information carrier and a sensor for detecting its location is shown.
  • the object of the present invention is to improve the accuracy and quality of this register method.
  • the sensors of the register devices can detect specially provided markings, data carriers or the like in the following information carrier.
  • the simplest form of information carrier is a simple line-shaped marking.
  • the sensors can also detect characteristic surface features of conventional printing form carriers that are not loaded with information carriers, such as the raised edge of a printing plate used in flexographic printing.
  • the positions of the printing plates can then be made accessible to a machine operator, for example, via a suitable interface, such as a display, a screen or a printer. This can make corrections to the positions of the printing plates to each other.
  • a suitable interface such as a display, a screen or a printer.
  • This can make corrections to the positions of the printing plates to each other.
  • he is to manually settings in a known manner to the make gear connections between the drive and the pressure cylinders or pressure domes.
  • directly driven machines which are being used for the first time in the CA 12 23 150
  • Such adjustment may be made by the operator by appropriate control of the drives driving the respective spikes or cylinders.
  • the printing plate support is a sleeve
  • the information carrier a transponder chip and the information stored on the chip are characteristic of the print motif and they affect the printing sleeve itself (print motif, color, age, etc.).
  • Such information is also often printed on printing sleeves in the form of plain text or barcodes.
  • information carriers can also be pronounced as simply pronounced markings on the circumference of the printing form carrier. Such marks may be indentations or stains in the substrate.
  • a metal strip anchored in the carrier material also satisfies with a suitable electromagnetic
  • Visible marks can become dirty during printing until they are no longer visible to the sensors. Therefore magnetically or electromagnetically readable information carriers such as magnetic tapes, transponder dipole chains, sequences of suitable metal structures, etc. are to be preferred.
  • a further increase in register quality is possible if, in addition to the position of the printing form carrier, the position of the printing material is also recorded and used for registration. This can be done with the methods known in the prior art, in which the substrate is provided with register marks whose position is recorded by sensors. For the study of these methods, reference is again made to the unpublished application filed with the German Patent and Trademark Office, with the file reference 102 54 836.6-27.
  • FIG. 1 schematically shows the arrangement of an embodiment of a printing form support 1 according to the invention with an information carrier 2.
  • an information carrier 2 In this embodiment, it is an idiosyncratic magnetic strip 2, which is embedded in the printing plate 1. In general, however, band-shaped magnetic strips are preferred.
  • the sensor 3 is attached to a suitable location of the printing press, not shown. Er 3 is suitable for reading the magnetic strip 2.
  • the sensor 3 transmits an analog signal via the signal line 6 to the control device 7 of the printing machine, which subjects the signal to an analog-to-digital conversion and takes into account the information contained in the generation of register correction signals to the drives of the printing press.
  • the information read out by the sensor 3 can also be used during the current printing process to improve the registration.
  • the printing form support 1 is a sleeve, which is mounted in the printing operation on the printing cylinder 5 of the printing press. Such arrangements are known in flexographic printing, but are also used in gravure in recent times.
  • the sleeve or the printing plate support carries the printing form 6.
  • the information carrier is arranged in this embodiment between an edge of the printing plate 6 and an end edge of the sleeve 1.
  • the arrow 4 indicates the direction of rotation of the cylinder 5.
  • FIG. 2 shows a printing plate support 1 according to the prior art, which is provided with a recess 7.
  • the printing form carrier is designed as a sleeve which is mounted on the cylinder 5.
  • the register pin 8 of the cylinder 5 which extends beyond the peripheral surface of the cylinder in the radial direction, receives. Only in this way can a satisfactory pre-registration be ensured according to the state of the art.
  • LIST OF REFERENCE NUMBERS 1 Printing plate carrier 2 sensor 3 sensor 4 arrow 5 cylinder 6 printing form 7 recess 8th register pin 9 10 11 12 13 14 15 16 17 18 19 120 21 22 23 24

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Rotary Presses (AREA)

Abstract

The invention concerns a polychrome rotary press wherein a printing form carrier (1) is respectively assigned to colours which are to be transferred onto the material to be printed. Said printing form carrier (1) bears a printing form (6) and can be fixed on a mandrel or cylinder (5) of a rotary press for transferring the printing image onto the material to be printed. The rotary press is provided with locating devices (6, 7, 8) which determine the position of the printing forms (6) relative to one another and which include sensors (3) determining the positions of the printing form carriers (1) in the press. The invention also concerns printing form carriers (1) which constitute a system with the inventive press. Finally the invention concerns method for operating such presses according to the invention.

Description

Die Erfindung betrifft eine Mehrfarben-Rotationsdruckmaschine

  • bei welcher den auf den Bedruckstoff zu übertragenden Farben jeweils ein Druckformträger zugeordnet ist, welcher eine Druckform trägt und
  • welcher auf einem Dorn oder Zylinder einer Rotationsdruckmaschine befestigbar ist, um das Druckbild auf Bedruckstoff zu übertragen,
  • wobei die Rotationsdruckmaschine über Registereinrichtungen verfügt, welche die Position der Druckformen zueinander festlegen.
The invention relates to a multicolor rotary printing machine
  • in which the ink to be transferred to the substrate is assigned in each case a printing form carrier, which carries a printing plate and
  • which can be fastened on a mandrel or cylinder of a rotary printing machine in order to transfer the printed image to printing material,
  • wherein the rotary printing machine has register means which fix the position of the printing plates to each other.

Derartige Maschinen sind beispielsweise als Flexo- und Tiefdruckmaschinen konzipiert. Unter dem Begriff "Druckformträger" sind alle möglichen Hülsen oder auch flexible Matten zu verstehen, welche eine Druckform tragen. Im Tiefdruck werden traditionellerwelse eine Druckform tragende Zylinder eingesetzt welche von Zapfen bzw. Lagerstellen gehaltert werden. Im Tiefdruck werden jedoch, ähnlich wie im Flexodruck, in letzter Zeit auch sogenannte Sleeves, die über einen Zylinder gestreift werden, verwendet. Insbesondere im Verpackungsdruck finden besonders viele verschiedene Farben Verwendung, so dass hier die Anforderungen an die Registergenauigkeit eine große Rolle spielen. Registergenauigkeit spielt aber auch In anderen Bereichen und bei der Verwendung anderer Druckverfahren eine Rolle. In der ebenfalls beim Deutschen Patent- und Markenamt eingereichten, noch unveröffentlichten Anmeldung mit dem Aktenzeichen 102 54 836. 6-27 wird ausführlich auf Registerverfahren eingegangen.Such machines are designed for example as flexographic and gravure printing machines. The term "printing plate" is to be understood all possible sleeves or flexible mats, which carry a printing plate. In gravure traditionally be used a cylinder pressure-bearing cylinder which are supported by pins or bearings. In gravure printing, however, similar to flexographic printing, so-called sleeves, which are striped over a cylinder, have recently been used. In packaging printing in particular, many different colors are used, so that the requirements for register accuracy play a major role here. Register accuracy also plays a role in other areas and in the use of other printing methods. In the filed with the German Patent and Trademark Office, still unpublished application with the file number 102 54 836th 6-27 is discussed in detail register procedures.

Die US 3963902 und die EP1205300 A1 zeigen Registerverfahren, mit denen die Positionen verschiedener Druckzylinder während des Druckbetriebes aufeinander abgestimmt werden. In den beiden Druckschriften werden verschiedene Informationsträger gezeigt, die In der Nähe eines stirnseitigen Endes der Druckzylinder angebracht sind.The US 3963902 and the EP1205300 A1 show register methods with which the positions of different printing cylinders are matched during the printing operation. In the two publications are shown various information carrier, which are mounted near a front end of the printing cylinder.

In der einschlägigen Literatur wird in der Regel nicht erwähnt, wie die Positionen der Druckformträger zueinander vor und bei Beginn des Druckprozesses festgelegt werden. Diese Festlegung erfolgt beispielsweise anIn the relevant literature is usually not mentioned how the positions of the printing plate to each other before and set at the beginning of the printing process. This determination is made, for example

Flexodruckmaschinen des Standes der Technik durch die Ausrichtung der Druckform - in der Regel einer Druckhülse oder eines Sleeves - an einem in radialer Richtung über die Umfangsfläche des Druckzylinders hinausragenden Stift.Flexographic printing machines of the prior art by the orientation of the printing plate - usually a printing sleeve or a sleeve - on a projecting in the radial direction over the peripheral surface of the printing cylinder pin.

Die Druckhülse oder der Sleeve verfügt ihrerseits über eine Ausnehmung, in die der Stift relativ genau hineinpasst. Es ist für den Maschinenbediener aufwändig, die Hülse richtig auszurichten. Diese Tätigkeit wird oft als Vorregisterung bezeichnet.The pressure sleeve or the sleeve in turn has a recess into which the pin fits relatively accurately. It is laborious for the operator to properly align the sleeve. This activity is often referred to as a pre-registration.

Darüber hinaus führt das Spiel zwischen Stift und Ausnehmung zu Ungenauigkeiten bei der Registerung.In addition, the play between pin and recess leads to inaccuracies in the registration.

Dieses Spiel nimmt insbesondere bei aus Kunststoff gefertigten, oft gewechselten Druckformträgern des Flexodrucks mit der Lebensdauer stark zu. Durch ein Verrutschen von Druckformen im Betrieb auf den Dornen oder Zylindern, auf denen sie sitzen, können auch während des laufenden Betriebs Registerfehler auftreten beziehungsweise sich vergrößern.This game is greatly increasing in particular when made of plastic, often changed printing plates of flexographic printing with the life. Slippage of printing plates during operation on the mandrels or cylinders on which they are seated can cause register errors or increase during operation.

Eine genauere Vorregisterung des Sleeves, die die genannten Nachteile verringern könnte, ist auch Gegenstand der US 5,551,339 . In dieser Druckschrift wird eine Druckmaschine gezeigt, die mit Sensorvorrichtungen versehen ist, die die Umfangsfläche der Drucksleeves beobachten. An dieser befinden sich Informationsträger, deren Position aufgezeichnet wird, nachdem die Sleeves in die Maschine eingebracht worden sind, aber bevor der eigentliche Druckbetrieb beginnt. Nach der Feststellung der Winkelposition des Sleeves auf dem Dorn, auf dem er sich befindet, wird die drehfeste Verbindung zwischen Dorn und Sleeve aufgehoben, der Sleeve wird von einer gestellfesten Haltevorrichtung ergriffen und so daran gehindert, einer Drehung des Domes zu folgen. Der Dorn wird daraufhin bei stillstehenden Sleeve so gedreht, dass sich eine relative Sollposition zwischen Sleeve und Dorn einstellt. Auch die US 6,314,883 zeigt ein Registerverfahren, bei dem ein auf einem Sleeve angebrachter Informationsträger und ein Sensor zur Erfassung seiner Lage gezeigt wird.A more accurate Vorregisterung of the sleeve, which could reduce the disadvantages mentioned, is also the subject of US 5,551,339 , In this document, a printing machine is shown, which is provided with sensor devices which observe the peripheral surface of the printing sleeve. At this there are information carriers whose position is recorded after the sleeves have been introduced into the machine, but before the actual printing operation begins. After determining the angular position of the sleeve on the mandrel on which it is located, the rotationally fixed connection between the mandrel and sleeve is released, the sleeve is gripped by a frame-fixed holding device and thus prevented from following a rotation of the dome. The mandrel is then rotated with the sleeve stopped so that sets a relative target position between the sleeve and mandrel. Also the US 6,314,883 shows a register method in which a mounted on a sleeve information carrier and a sensor for detecting its location is shown.

Die Aufgabe der vorliegenden Erfindung besteht darin, die Genauigkeit und Güte dieses Registerverfahrens zu verbessern.The object of the present invention is to improve the accuracy and quality of this register method.

Die Aufgabe wird durch die kenzeichnenden Merkmale der Ansprüche 1 und 6 gelöst.The object is solved by the kenzeichnenden features of claims 1 and 6.

Es hat sich gezeigt, dass die Anordnung der des Informationsträgers außerhalb der Druckform die größten Freiheitsgrade bei der Formgebung und Größengestaltung desselben mit sich bringt. Die Anordnung auf dem stirnseitigen Rand bringt praktische Vorteile beim Auslesen des Sensors mit sich.It has been found that the arrangement of the information carrier outside the printing form brings the greatest degrees of freedom in the shaping and size of the same. The arrangement on the front edge brings with it practical advantages when reading the sensor.

Die Sensoren der Registereinrichtungen können eigens dafür vorgesehene Markierungen, Datenträger oder Ähnliches im - folgenden Informationsträger - erfassen. Die einfachste Form eines Informationsträgers ist eine einfache strichförmige Markierung. Die Sensoren können jedoch auch charakteristische Oberflächenmerkmale konventioneller, nicht mit Informationsträgern beaufschlagter Druckformträger - wie den erhabenen Rand einer im Flexodruck eingesetzten Druckform - erfassen.The sensors of the register devices can detect specially provided markings, data carriers or the like in the following information carrier. The simplest form of information carrier is a simple line-shaped marking. However, the sensors can also detect characteristic surface features of conventional printing form carriers that are not loaded with information carriers, such as the raised edge of a printing plate used in flexographic printing.

Die Positionen der Druckformen können dann beispielsweise über eine geeignete Schnittstelle wie ein Display, einen Bildschirm oder Drucker einem Maschinenbediener zugänglich gemacht werden. Dieser kann Korrekturen der Positionen der Druckformen zueinander vornehmen. Bei der Längsregistereinstellung an einer lediglich mit einem Antrieb ausgestatteten Druckmaschine wird er dazu in bekannter Weise manuell Einstellungen an den getrieblichen Verbindungen zwischen dem Antrieb und den Druckzylindern oder Druckdomen vornehmen. Bei direktangetriebenen Maschinen, welche erstmals in der CA 12 23 150 offenbart sind, kann eine solche Einstellung von dem Bediener durch eine entsprechende Ansteuerung der die jeweiligen Dornen oder Zylindern antreibenden Antriebe erfolgen.The positions of the printing plates can then be made accessible to a machine operator, for example, via a suitable interface, such as a display, a screen or a printer. This can make corrections to the positions of the printing plates to each other. In the longitudinal register setting on a press equipped only with a drive, he is to manually settings in a known manner to the make gear connections between the drive and the pressure cylinders or pressure domes. For directly driven machines, which are being used for the first time in the CA 12 23 150 Such adjustment may be made by the operator by appropriate control of the drives driving the respective spikes or cylinders.

Es ist von Vorteil, diese Ansteuerung durch eine Steuereinheit vornehmen zu lassen.It is advantageous to make this control by a control unit.

Aus der DE 297 20 928 U1 ist ein Druckformträger bekannt

  • welcher eine Druckform trägt und welcher auf einem Dorn oder Zylinder einer Rotationsdruckmaschine befestigbar ist, um das Druckbild auf Bedruckstoff zu übertragen, und
  • welcher zumindest einen Informationsträger enthält, dem durch eine Ausleseeinrichtung Informationen entnehmbar sind.
From the DE 297 20 928 U1 is a printing plate known
  • which carries a printing form and which can be fastened on a mandrel or cylinder of a rotary printing machine in order to transfer the printed image to printing material, and
  • which contains at least one information carrier to which information can be taken out by a read-out device.

Hierbei ist der Druckformträger eine Hülse, der Informationsträger ein Transponderchip und die auf dem Chip gespeicherten Informationen sind für das Druckmotiv charakteristisch und sie betreffen die Druckhülse selbst (Druckmotiv, Farbe, Alter usw.). Derartige Informationen werden auch oft auf Druckhülsen in Form von Klarschrift oder Barcodes aufgedruckt.Here, the printing plate support is a sleeve, the information carrier a transponder chip and the information stored on the chip are characteristic of the print motif and they affect the printing sleeve itself (print motif, color, age, etc.). Such information is also often printed on printing sleeves in the form of plain text or barcodes.

Druckformträger bilden ein System mit einer erfindungsgemäßen Rotationsdruckmaschine, wenn

  • die automatisch auslesbaren Informationen zur Feststellung der relativen Lage des Druckformträgers auf dem Dorn oder Zylinder einer Rotationsdruckmaschine geeignet sind.
Printing form supports form a system with a rotary printing press according to the invention, when
  • the automatically readable information for determining the relative position of the printing form carrier on the mandrel or cylinder of a rotary printing machine are suitable .

Vorteilhafte Arten der Anordnung des Informationsträgers gehen aus den Unteransprüchen hervor. Wie bereits erwähnt können Informationsträger auch als einfach ausgeprägte Markierungen am Umfang des Druckformträgers ausgeprägt sein. Solche Markierungen können Einkerbungen oder Einfärbungen in dem Trägermaterial sein. Jedoch erfüllt auch ein in dem Trägermaterial verankerter Metallstreifen, der mit einem geeigneten elektromagnetischenAdvantageous types of arrangement of the information carrier will become apparent from the dependent claims. As already mentioned, information carriers can also be pronounced as simply pronounced markings on the circumference of the printing form carrier. Such marks may be indentations or stains in the substrate. However, a metal strip anchored in the carrier material also satisfies with a suitable electromagnetic

Sensor erkannt werden kann, denselben Zweck. Bereits solche einfachen Markierungen liefern, wenn sie als Strich oder Punkt ausgeführt sind, bei einer Umdrehung des Druckbildträgers eine geringe Informationsmenge, welche jedoch prinzipiell schon zur Bestimmung der Winkellage in Umfangsrichtung (Längsregister) und der axialen Position des Druckformträgers auf dem Druckzylinder bzw. Dorn (Querregister) ausreicht. Zu bevorzugen sind jedoch Informationsträger, die in Umfangsrichtung über größere Bereiche der Umfangsfläche ausgedehnt sind. Solche Informationsträger können mit größeren Informationsmengen beaufschlagt werden, und es ist möglich, dass der Sensor die genaue Lage der Druckform über einen großen Winkelbereich der Umdrehung der Druckform um die Hauptträgheitsachse des Dorns oder Zylinders aufzeichnen kann. Diese zusätzlichen Informationen können der Güte des Längsregisters zu Gute kommen.Sensor can be detected, the same purpose. Already such simple markings, when executed as a line or dot, provide a small amount of information during one revolution of the print image carrier, which, however, in principle already for determining the angular position in the circumferential direction (longitudinal register) and the axial position of the printing plate carrier on the printing cylinder or mandrel ( Cross register) is sufficient. However, information carriers that are circumferentially extended over larger areas of the peripheral surface are preferred. Such information carriers can be loaded with larger amounts of information, and it is possible that the sensor can record the exact position of the printing form over a large angular range of the revolution of the printing plate about the main axis of inertia of the mandrel or cylinder. This additional information can benefit the quality of the longitudinal register.

Optisch erkennbare Markierungen können im Druckbetrieb verschmutzen, bis sie für die Sensoren nicht mehr zu erkennen sind. Daher sind magnetisch oder elektromagnetisch auslesbare Informationsträger wie Magnetbänder, Transponder Dipolketten, Abfolgen geeigneter Metallstrukturen usw. zu bevorzugen.Visible marks can become dirty during printing until they are no longer visible to the sensors. Therefore magnetically or electromagnetically readable information carriers such as magnetic tapes, transponder dipole chains, sequences of suitable metal structures, etc. are to be preferred.

Eine weitere Steigerung der Registergüte ist möglich, wenn neben der Position der Druckformträger auch die Position des Bedruckstoffes aufgezeichnet und zur Registerung verwendet wird. Dies kann mit den nach dem Stand der Technik bekannten Verfahren, bei welchen der Bedruckstoff mit Registermarken, deren Lage von Sensoren aufgezeichnet wird, versehen wird, geschehen. Zum Studium dieser Verfahren wird erneut auf die beim Deutschen Patent- und Markenamt eingereichte, noch unveröffentlichte Anmeldung mit dem Aktenzeichen 102 54 836.6-27 verwiesen.A further increase in register quality is possible if, in addition to the position of the printing form carrier, the position of the printing material is also recorded and used for registration. This can be done with the methods known in the prior art, in which the substrate is provided with register marks whose position is recorded by sensors. For the study of these methods, reference is again made to the unpublished application filed with the German Patent and Trademark Office, with the file reference 102 54 836.6-27.

Wenn Informationen sowohl zur Lage der Druckformen als auch zur Lage des Bedruckstoffes in der Druckmaschine zur Verfügung stehen, können bei der Registerung auch weitere Einflussfaktoren auf die Druckqualität, die von einer Änderung der Beschaffenheit des Bedruckstoffes herrühren (z. B. Fan-Out und Bahnlängung), berücksichtigt werden.If information is available on both the position of the printing plates and the position of the printing material in the printing press, further factors influencing the print quality, which result from a change in the condition of the printing material (eg fan-out and web lengthening), can also be registered ).

Weitere Ausführungsbeispiele der Erfindung gehen aus der gegenständlichen Beschreibung und den Ansprüchen hervor.Further embodiments of the invention will become apparent from the description and the claims.

Auf die Darstellung eines ganzen Druckmaschine oder der Einbaulage eines erfindungsgemäßen Druckformträgers in einer erfindungsgemäßen Druckmaschine kann an dies er Stelle verzichtet werden, da Druckmaschinen an sich bekannt sind.On the representation of an entire printing press or the installation position of a printing form carrier according to the invention in a printing press according to the invention can be dispensed with this point, since printing machines are known per se.

In diesem Zusammenhang wird noch einmal beispielhaft auf die bereits oben zitierten Druckschriften und die DE 101 45 957.2 A1 verwiesen. Dort sind Druckmaschinen des Standes der Technik und Registerverfahren dargestellt. In solchen Druckmaschinen muss dann nur noch ein Sensor 3 so eingefügt werden, dass er die Position des Druckformträgers 1 in der Druckmaschine erkennen kann. Die Figuren zeigen:

  • Fig. 1 zeigt ein Schema eines erfindungsgemäßen Druckformträgers
  • Fig. 2 zeigt ein Schema eines Druckformträgers nach dem Stand der Technik
In this context, once again exemplifies the cited above documents and the DE 101 45 957.2 A1 directed. There are illustrated prior art printing machines and registration methods. In such printing machines then only one sensor 3 must be inserted so that it can recognize the position of the printing form carrier 1 in the printing press. The figures show:
  • Fig. 1 shows a diagram of a printing form carrier according to the invention
  • Fig. 2 shows a schematic of a printing plate carrier according to the prior art

Figur 1 zeigt schematisch die Anordnung eines Ausführungsbeispiels eines erfindungsgemäßen Druckformträgers 1 mit einem Informationsträger 2. Bei diesem Ausführungsbeispiel handelt es sich um einen eigenwillig geformten Magnetstreifen 2, der in den Druckformträger 1 eingelassen ist. In der Regel werden jedoch bandförmige Magnetstreifen bevorzugt. Der Sensor 3 ist an einer geeigneten Stelle der nicht dargestellten Druckmaschine angebracht. Er 3 ist zum Auslesen des Magnetstreifens 2 geeignet. Der Sensor 3 übermittelt ein analoges Signal über die Signalleitung 6 an die Steuervorrichtung 7 der Druckmaschine, welche das Signal in einer Analog-Digital-Wandlung unterzieht und die enthaltene Information bei der Erzeugung von Registerkorrektursignalen an die Antriebe der Druckmaschine berücksichtigt. FIG. 1 schematically shows the arrangement of an embodiment of a printing form support 1 according to the invention with an information carrier 2. In this embodiment, it is an idiosyncratic magnetic strip 2, which is embedded in the printing plate 1. In general, however, band-shaped magnetic strips are preferred. The sensor 3 is attached to a suitable location of the printing press, not shown. Er 3 is suitable for reading the magnetic strip 2. The sensor 3 transmits an analog signal via the signal line 6 to the control device 7 of the printing machine, which subjects the signal to an analog-to-digital conversion and takes into account the information contained in the generation of register correction signals to the drives of the printing press.

Der größte Nutzen dieses Ausführungsbeispiels liegt in der Vereinfachung der Vorregisterung, die nach dem Stand der Technik wie oben dargestellt mit Hilfe eines Stiftes erfolgt.The greatest benefit of this embodiment lies in the simplification of the pre-registration which, according to the state of the art, takes place with the aid of a pin as illustrated above.

Die von dem Sensor 3 ausgelesenen Informationen können jedoch auch während des laufenden Druckprozesses zur Verbesserung der Registerung herangezogen werden. Die Figur zeigt auch, dass es sich bei dem Druckformträger 1 um eine Hülse handelt, die im Druckbetrieb auf den Druckzylinder 5 der Druckmaschine aufgezogen ist. Solche Anordnungen sind im Flexodruck bekannt, werden in jüngerer Zeit jedoch auch im Tiefdruck verwendet.However, the information read out by the sensor 3 can also be used during the current printing process to improve the registration. The figure also shows that the printing form support 1 is a sleeve, which is mounted in the printing operation on the printing cylinder 5 of the printing press. Such arrangements are known in flexographic printing, but are also used in gravure in recent times.

Die Hülse bzw. der Druckformträger trägt die Druckform 6. Der Informationsträger ist bei diesem Ausführungsbeispiel zwischen einem Rand der Druckform 6 und einem stirnseitigen Rand der Hülse 1 angeordnet.The sleeve or the printing plate support carries the printing form 6. The information carrier is arranged in this embodiment between an edge of the printing plate 6 and an end edge of the sleeve 1.

Der Pfeil 4 deutet die Rotationsrichtung des Zylinders 5 an.The arrow 4 indicates the direction of rotation of the cylinder 5.

Figur 2 zeigt einen Druckformträger 1 nach dem Stand der Technik, welcher mit einer Ausnehmung 7 versehen ist. Der Druckformträger ist als eine Hülse ausgeführt, die auf den Zylinder 5 aufgezogen wird. Beim Aufziehen muss der Maschinenbediener darauf achten, dass die Ausnehmung 7 den Registerstift 8 des Zylinders 5, welcher über die Umfangsfläche des Zylinders in radialer Richtung hinausragt, aufnimmt. Nur so ist nach dem Stand der Technik eine befriedigende Vorregisterung zu gewährleisten. Bezugszeichenliste 1 Druckformträger 2 Sensor 3 Sensor 4 Pfeil 5 Zylinder 6 Druckform 7 Ausnehmung 8 Registerstift 9 10 11 12 13 14 15 16 17 18 19 120 21 22 23 24 FIG. 2 shows a printing plate support 1 according to the prior art, which is provided with a recess 7. The printing form carrier is designed as a sleeve which is mounted on the cylinder 5. When mounting the operator must make sure that the recess 7, the register pin 8 of the cylinder 5, which extends beyond the peripheral surface of the cylinder in the radial direction, receives. Only in this way can a satisfactory pre-registration be ensured according to the state of the art. LIST OF REFERENCE NUMBERS 1 Printing plate carrier 2 sensor 3 sensor 4 arrow 5 cylinder 6 printing form 7 recess 8th register pin 9 10 11 12 13 14 15 16 17 18 19 120 21 22 23 24

Claims (7)

  1. Multi-colour rotary press
    - in which the colours which are to be transferred onto the printing material are respectively assigned a printing forme carrier (1) which is a sleeve or a flexible mat and bears a printing forme (6) and
    - which (1) can be fixed on a mandrel or cylinder (5) of a rotary press in order to transfer the printing image onto printing material,
    - the rotary press having register devices (6, 7, 8) which determine the positions of the printing formes (6) relative to one another,
    - the register devices (6, 7, 8) comprising sensors (3) which determine the positions of the printing forme carriers (1) in the press, and
    - before, at the start of or during the printing process, the register devices (6, 7, 8) providing information about the positions of the printing forme carriers (1) with the aid of the sensors (3),
    - on the basis of which information control signals can be provided,
    the register devices (6, 7, 8) comprising a control apparatus (7), with which, on the basis of the positions of the printing forme carriers (1) determined by the sensors (3), it is possible to generate control signals with which the drives of the mandrels or cylinders (5) can be activated in such a way and/or the drive Connections between the drive and the mandrel or cylinder can be adjusted in such a way that the phase angle of the mandrels or cylinders (5) relative to one another can be varied in such a way
    - that the register accuracy of the print increases,
    - and the printing forme carriers (1) in each case containing at least one information carrier (2), from which information can be removed by a sensor (3), the automatically readable information being suitable to define the relative position of the printing forme carrier on the mandrel or cylinder (5) of a rotary press,
    characterized
    - in that the at least one information carrier (2) is arranged outside the printing forme (6),
    - in that the at least one information carrier (2) is arranged between the printing image (6) and an edge of the printing forme carrier which faces the front end of the mandrel or the cylinder (5),
    - and in that the information stored on the information carrier can be read magnetically or electromagnetically.
  2. Multi-colour rotary press according to the preceding claim,
    characterized in that
    the at least one information carrier (2) has an elongated, preferably rectangular, shape, its long side being aligned substantially in the circumferential direction of the printing forme carrier.
  3. multi-colour rotary press according to one of the preceding claims,
    characterized in that
    the at least one information carrier (2) encloses the circumference of the mandrel or cylinder (5) of the press.
  4. Multi-colour rotary press according to one of the preceding claims,
    characterized in that
    the information carrier (2) comprises a magnetic tape or a sequence of magnetizable individual elements.
  5. Method for setting up a multi-colour rotary press before or at the start of printing,
    - in which the colours which are to be transferred onto the printing material are respectively assigned a printing forme carrier (1) which is a sleeve or a flexible mat and bears a printing forme (6)
    - in which the printing forme carriers (1) are fixed on mandrels or cylinders (5) of a rotary press in order to transfer the printing image onto printing material, and
    - in which register devices (6, 7, 8) determine the position of the printing formes (6) relative to one another,
    - the register devices (6, 7, 8) comprising sensors (3) which determine the positions of the printing forme carriers (1) in the press,
    - the register devices (6, 7, 8) providing information on the basis of the positions of the printing forme carriers (1) determined by the sensors (3),
    - control signals being obtained on the basis of this information, and
    - the register devices (6, 7, 8) comprising a control apparatus (7), which, on the basis of the positions of the printing forme carriers (1) determined by the sensors (3), generates control signals,
    and, with these control signals, the control apparatus activating the drives of the mandrels or cylinders (5) in such a way and/or adjusting the drive connection located between the drive and the mandrel in such a way that the phase angle of the mandrels or cylinders (5) relative to one another is varied in such a way
    - that the register accuracy of the print increases,
    - and use being made of printing forme carriers (1) which in each case contain at least one information carrier (2), from which information can be removed by a sensor (3),
    this information being read automatically and used to define the relative position of the printing forme carrier on the mandrel or cylinder (5) of a rotary press, characterized in that
    - use is made of printing formes in which the at least one information carrier (2) is arranged outside the printing forme (6),
    - the at least one information carrier (2) being arranged between the printing image (6) and an edge of the printing forme carrier which faces the front end of the mandrel or the cylinder (5),
    - and the information stored on the information carrier being read magnetically or electromagnetically.
  6. Method according to the preceding claim,
    characterized in that,
    during the adjustment of the relative phase angle of the mandrels or cylinders, the printing forme carriers (1) are at rest relative to the mandrels or cylinders (5) assigned thereto.
  7. Method according to the preceding claim, characterized in that use is made of a multi-colour rotary press according to one of Claims 1 to 4.
EP04731376A 2003-05-07 2004-05-06 Polychrome rotary press Expired - Lifetime EP1622770B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10320205.6A DE10320205B4 (en) 2003-05-07 2003-05-07 Multi-color rotary printing press
PCT/EP2004/005127 WO2004098890A1 (en) 2003-05-07 2004-05-06 Polychrome rotary press

Publications (2)

Publication Number Publication Date
EP1622770A1 EP1622770A1 (en) 2006-02-08
EP1622770B1 true EP1622770B1 (en) 2012-08-15

Family

ID=33426683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04731376A Expired - Lifetime EP1622770B1 (en) 2003-05-07 2004-05-06 Polychrome rotary press

Country Status (5)

Country Link
US (1) US7748318B2 (en)
EP (1) EP1622770B1 (en)
DE (1) DE10320205B4 (en)
ES (1) ES2392254T3 (en)
WO (1) WO2004098890A1 (en)

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DE102006008198A1 (en) * 2006-02-22 2007-08-23 Lehner Gmbh Method for identifying print master in print roller has a transponder fitted to the master and read by a sensor in the print roller
DE102006060464C5 (en) * 2006-12-19 2013-12-24 Bobst Bielefeld Gmbh Method of adjusting a roll in a rotary printing machine
ES2339691T5 (en) † 2006-10-23 2014-07-18 Bobst Bielefeld Gmbh Procedure of adjusting a roller in a rotating printing press
EP2100732A1 (en) * 2008-03-13 2009-09-16 Fischer & Krecke GmbH Method and calibration tool for calibrating a rotary printing press
DE202008009068U1 (en) * 2008-04-07 2008-09-18 Sächsische Walzengravur GmbH Gravure printing or embossing mold as sleeve or cylinder
DE102009046566B4 (en) * 2009-11-10 2017-06-01 Windmöller & Hölscher Kg Body with a register marker field
DE102012000181A1 (en) * 2012-01-09 2013-07-11 Perkenn GmbH Register system for printing machines
DE102021125060A1 (en) * 2020-10-22 2022-04-28 Heidelberger Druckmaschinen Aktiengesellschaft Method for operating a flexographic printing machine, flexographic printing machine, system and sleeve for a flexographic printing forme
EP4201677A1 (en) * 2021-12-22 2023-06-28 Bobst Bielefeld GmbH Printing machine

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DE10254836A1 (en) 2002-11-22 2004-06-17 Windmöller & Hölscher Kg Method and device for regulating the register of a printing press

Also Published As

Publication number Publication date
DE10320205B4 (en) 2015-12-17
EP1622770A1 (en) 2006-02-08
DE10320205A1 (en) 2004-12-09
ES2392254T3 (en) 2012-12-07
WO2004098890A1 (en) 2004-11-18
US20070101882A1 (en) 2007-05-10
US7748318B2 (en) 2010-07-06

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