EP2296893B1 - Method and device for imprinting printing paper with a decor - Google Patents

Method and device for imprinting printing paper with a decor Download PDF

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Publication number
EP2296893B1
EP2296893B1 EP09772102A EP09772102A EP2296893B1 EP 2296893 B1 EP2296893 B1 EP 2296893B1 EP 09772102 A EP09772102 A EP 09772102A EP 09772102 A EP09772102 A EP 09772102A EP 2296893 B1 EP2296893 B1 EP 2296893B1
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EP
European Patent Office
Prior art keywords
printing
decor
quality
paper
mark
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EP09772102A
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German (de)
French (fr)
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EP2296893A1 (en
Inventor
Udo Tünte
Richard Schwitte
Frank Petersen
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Huelsta Werke Huels GmbH and Co KG
Flooring Industries Ltd SARL
Original Assignee
Huelsta Werke Huels GmbH and Co KG
Flooring Industries Ltd SARL
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Application filed by Huelsta Werke Huels GmbH and Co KG, Flooring Industries Ltd SARL filed Critical Huelsta Werke Huels GmbH and Co KG
Priority to PL09772102T priority Critical patent/PL2296893T3/en
Publication of EP2296893A1 publication Critical patent/EP2296893A1/en
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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
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
    • 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
    • B41P2233/50—Marks on printed material
    • B41P2233/51—Marks on printed material for colour quality control

Definitions

  • the invention relates to a method for printing on printing paper according to the preamble of claim 1. Furthermore, the invention relates to a digital printing device according to the preamble of claim 8.
  • From the EP 1 149 703 A is already a method according to the preamble of claim 1 and a device according to the preamble of claim 8 for printing on printing paper with a decor having at least one decorative image for use in sheet-like components forth.
  • the printing paper is printed by a digital printing method by a digital printing method.
  • On the edge of the printing paper a continuous edge strip marking extending parallel to the decor is printed with at least one longitudinal color strip. The print quality is monitored as a function of the marginal strip mark.
  • a corresponding digital printing device is known from this publication.
  • a test system for printed products whereby a cut mark is printed for each product and a product is provided with an exclusion marker if a quality defect is detected.
  • the object of the present invention is therefore to provide a method according to claim 1 and a device according to claim 8, wherein prints of poor quality can be detected in a simple manner.
  • the edge of the printing paper is a continuous, parallel to the decor edge trim with at least one longitudinal color strip is printed, which is ultimately printed parallel to the decor, and that the print quality is monitored in dependence on the edge strip marking.
  • the print quality of the decoration is derived as a whole from the print quality of the marginal strip. If the edge strip has a poor print quality, this means that the decor does not have sufficient quality.
  • the invention thus ultimately provides a method which makes it possible in a simple manner to check by means of an outer edge strip whether the print quality of the decoration overall corresponds to a predetermined print quality.
  • the present invention not only extends to printing paper in sheet form, but also in particular for printing paper webs, that is to say on printing paper which is printed on the roll and subsequently rolled up in the printed state. In the latter case, the edge strip marking then extends over the entire length of the printing paper web.
  • cut markings in the edge region of the printing paper in addition to the marginal strip marking.
  • this refers to embodiments in which the printing paper is peeled from a roll and printed. Cut marks are used to indicate those locations where the print paper is subsequently cut into individual sheets. Furthermore, alignment marks can be provided, which ultimately serve for alignment in the further processing of the cut sheets.
  • a cut mark is variably arranged after an interruption of the printing process and subsequent continuation. The variable arrangement of the cut mark depends on the print quality of the decor. Ultimately, in the invention so automatically monitors the print quality of the decor.
  • the color of the color strip corresponds to the color of the print head.
  • the color of the edge strip of the edge strip marking is then monitored.
  • Such color comparison is usually easier to do than a color comparison within an entire decor image.
  • the number of color stripes of the edge strip marking corresponds to the number of active print heads of the printing device. In this way, it can then be determined whether all active printheads work and deliver ink of the desired quality. If a quality restriction is detected in the marginal strip monitoring, this means that the decorative image also has quality restrictions.
  • the pressure of a cut mark can be initiated manually and / or automatically.
  • the print quality can be manually monitored after resuming the printing process. If the print quality of the decor is considered adequate, initiate an appropriate command to start printing the cut mark. At the same time, a new decorative image is then printed on the next paper section. It is preferable, of course, that the pressure of the cut mark be automatically initiated. In this case, it is expedient if the print quality of the decor is automatically monitored. As a result, the digital printing device can ultimately be operated completely automatically.
  • the print quality of the decoration can be monitored by means of an optical monitoring device which is associated with the digital printing device. It should preferably be provided that the optical monitoring device compares the current print result after an interruption and subsequent continuation of the printing process with a predetermined print quality and automatically initiates the pressure of a cut mark at a predetermined match of the current print result with the predetermined print quality. At the same time a new paper section is defined and started with the printing of the decorative image on this paper section.
  • the monitoring device directly monitors the print quality of the decor and thus the decor image with regard to its print quality.
  • a corresponding sensor is arranged above the decor and then compares the print quality of the decorative image with the specified print quality.
  • a printing paper 1 is shown in the form of an elongated web of a roll.
  • the printing paper 1 may be conventional resinated, partially resinated or doctored paper which may or may not have an ink receiving layer on the printing side.
  • Printed on the printing paper is a printed decor 2.
  • the decor 2 can be any image.
  • the decor 2 has at least one decorative image 3.
  • a plurality of decorative images 3 are provided, which are arranged one behind the other in the longitudinal direction L.
  • a plurality of markings are respectively provided on the edge, namely in the edge region 4, 5 of both longitudinal edges of the printing paper 1.
  • the markings are so-called cut marks 6, 7, 8 as well as alignment marks 9.
  • the cut marks 6, 7, 8 and alignment markings 9 face one another in each case.
  • the opposite cut marks 6 and the opposite Cut marks 7 define a paper section 10 on which a decorative image 13 is located.
  • the cut marks 6, 7 serve in the present case as a display for dividing the printing paper web into individual sheets.
  • the alignment marks are used in this context for the corresponding orientation of the printing paper web.
  • the decorative image 13 has five identical decor sections 14, which are pressed in the further processing with plate-shaped bodies to flat components, such as panels or panels for floor, wall, ceiling or furniture applications.
  • the number of the decorative portions is not limited to five, as shown. It can also be a larger or smaller number of decor sections per decorative image 13 may be provided.
  • the individual cut marks 6, 7, 8 are arranged at different distances from each other.
  • the usual distance between two cut marks and thus the usual amount of the paper section defined by the cut marks is determined by the spacing of adjacent cut marks 6, 7 at an edge area.
  • the distance of the cut marks 7 and 8 is considerably smaller than the distance of the cut markers 6, 7.
  • the distance of the cut mark 8 to not shown but in the longitudinal direction following cut mark ultimately corresponds again to the distance of the cut marks 6, 7.
  • the method for printing on the printing paper 1 is carried out in such a manner that the printing paper 1 is fed from a teaching paper roll to a digital printing device.
  • a digital printing device This can be an ink-jet printer, over which the decor 2 is printed.
  • the printing paper 1 is passed from the blank paper roll through a corresponding paper feed of the digital printing apparatus to a paper discharge on which the printing paper 1 is wound into a printed printing paper roll.
  • the cut mark 6 is first printed on both sides.
  • the printheads which are located on the printer carriage which can be moved on a printer guide
  • the decorative image 13 is printed.
  • the cut marks 7 are printed at the end of the decorative image 13.
  • the cut marks 7 on the one hand form the end of the paper section 10 and the beginning of the paper section 11 with a corresponding decorative image 13.
  • the individual decorative images 13 on the paper sections 10, 11, 12 are identical. However, this does not have to be the case. In principle, different decorative images 13 on the individual paper sections 10, 11, 12 may be provided.
  • the printing process is now interrupted. This may be necessary, for example, for maintenance reasons or to replace an ink tank. Then the printing process continues. During the entire printing process, the print quality of the decor 2 or the respective decorative image 13 is monitored. This is an automatic monitoring by means of a monitoring device, not shown in detail. If it is determined in the optical monitoring after the resumption of printing activity that the print quality of the decorative image 13 corresponds to the predetermined requirements, the cut marks 8 are printed. The cut marks 8 delimit the paper section 11 and represent the beginning of the paper section 12 with a new decorative image 13.
  • the optical monitoring device has at least one optical sensor 15, 16.
  • the optical sensor 15 is directed directly to the decorative image 13, while the optical sensor 16 is directed to a marginal strip 17, which extends parallel to the decor 2 edge and parallel to the decorative images 13 is printed.
  • the edge strip marking 17 in the present case has a plurality of edge strips 18.
  • the individual marginal strips 18 are colored and correspond in color and number to the color and number of active printheads of the printing device.
  • the two sensors 15, 16, which are arranged immediately following the printer carriage or the print heads, may alternatively or also be provided jointly.
  • the two sensors 15, 16 are ultimately coupled to a control device 19 of the printing device 1, which in turn has a comparator, not shown, in which the actual pressure result is compared with the predetermined desired pressure result in an actual target comparison ,

Description

Die Erfindung betrifft ein Verfahren zum Bedrucken von Druckpapier nach dem Oberbegriff des Anspruchs 1. Desweiteren betrifft die Erfindung eine digitale Druckvorrichtung nach dem Oberbegriff des Anspruchs 8.The invention relates to a method for printing on printing paper according to the preamble of claim 1. Furthermore, the invention relates to a digital printing device according to the preamble of claim 8.

Aus der EP 1 149 703 A geht bereits ein Verfahren nach dem Oberbegriff des Anspruchs 1 sowie eine Vorrichtung nach dem Oberbegrift des Anspruchs 8 zum Bedrucken von Druckpapier mit einem wenigstens ein Dekorbild aufweisenden Dekor zur Verwendung bei flächigen Bauteilen hervor. Das Druckpapier wird mittels eines digitalen Druckverfahrens durch eine digitale Druckvorrichtung bedruckt. Randseitig am Druckpapier wird eine fortlaufende, parallel zum Dekor verlaufende Randstreifenmarkierung mit wenigstens einem längslaufenden Farbstreifen gedruckt. Die Druckqualität wird in Abhängigkeit von der Randstreifenmarkierung überwacht. Neben dem vorgenannten Verfahren ist aus dieser Veröffentlichung auch eine entsprechende digitale Druckvorrichtung bekannt.From the EP 1 149 703 A is already a method according to the preamble of claim 1 and a device according to the preamble of claim 8 for printing on printing paper with a decor having at least one decorative image for use in sheet-like components forth. The printing paper is printed by a digital printing method by a digital printing method. On the edge of the printing paper, a continuous edge strip marking extending parallel to the decor is printed with at least one longitudinal color strip. The print quality is monitored as a function of the marginal strip mark. In addition to the aforementioned method, a corresponding digital printing device is known from this publication.

Verfahren der vorgenannten Art gehen auch bereits aus der JP 2007 021735 A und der US 2004/264773 A1 hervor.Procedures of the aforementioned type are already out of the JP 2007 021735 A and the US 2004/264773 A1 out.

Aus der WO 01/14928 A2 ist ein Prüfsystem für Druckerzeugnisse bekannt, wobei bei jedem Erzeugnis eine Schnittmarkierung gedruckt wird und bei festgestelltem Qualitätsmangel ein Erzeugnis mit einem Ausschlussmarker versehen wird.From the WO 01/14928 A2 For example, a test system for printed products is known, whereby a cut mark is printed for each product and a product is provided with an exclusion marker if a quality defect is detected.

Beim Digitaldruck kommt es verschiedentlich vor, daß der Druckvorgang unterbrochen wird. Dies ist beispielsweise dann der Fall, wenn sich keine Druckfarbe mehr im Tintentank befindet oder aber eine Wartung erforderlich ist. Wenn der Druck anschließend fortgesetzt wird, hat das soeben im Druck befindliche Dekorbild üblicherweise Qualitätsbeeinträchtigungen. Gleiches gilt, wenn beispielsweise bei einem Stromausfall der Druck kurzzeitig unterbrochen wird. Derart hergestellte Drucke können in der Regel nicht in der Produktion weiter verwendet werden. Da Herstellungsprozesse in der Regel automatisiert ablaufen, kann ein derartiger Fehler häufig nur schwer festgestellt werden.In digital printing, it sometimes happens that the printing process is interrupted. This is the case, for example, when there is no more ink in the ink tank or maintenance is required. When the printing is then continued, the decorative image just printed has usually quality deterioration. The same applies if, for example, during a power failure, the pressure is briefly interrupted. As a rule, prints produced in this way can not continue to be used in production. Since manufacturing processes are usually automated, such an error is often difficult to determine.

Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren gemäss Anspruch 1 und eine Vorrichtung gemäss Anspruch 8 zur Verfügung zu stellen, wobei Drucke mit schlechter Qualität in einfacher Weise festgestellt werden können.The object of the present invention is therefore to provide a method according to claim 1 and a device according to claim 8, wherein prints of poor quality can be detected in a simple manner.

Zur Lösung der vorgenannten Aufgabe ist nun erfindungsgemäß vorgesehen, daß randseitig am Druckpapier eine fortlaufende, parallel zum Dekor verlaufende Randstreifenmarkierung mit wenigstens einem längslaufenden Farbstreifen gedruckt wird, die letztlich parallel zum Dekor gedruckt wird, und daß die Druckqualität in Abhängigkeit von der Randstreifenmarkierung überwacht wird. Erfindungsgemäß wird also aus der Druckqualität des Randstreifens die Druckqualität des Dekors insgesamt abgeleitet. Weist der Randstreifen eine schlechte Druckqualität auf, bedeutet dies, daß auch das Dekor keine hinreichende Qualität hat. Durch die Erfindung wird also letztlich ein Verfahren zur Verfügung gestellt, das es in einfacher Weise ermöglicht, durch einen außenliegenden Randstreifen zu überprüfen, ob die Druckqualität des Dekors insgesamt einer vorgegebenen Druckqualität entspricht. Hinzuweisen ist in diesem Zusammenhang darauf, daß sich die vorliegende Erfindung dabei nicht nur auf Druckpapier in Bogenform erstreckt, sondern insbesondere auch bei Druckpapierbahnen, also auf Druckpapier, das von der Rolle her bedruckt und anschließend im bedruckten Zustand aufgerollt wird, erstreckt. Im letztgenannten Fall erstreckt sich die Randstreifenmarkierung dann über gesamte Länge der Druckpapierbahn.To achieve the above object is now provided according to the invention that the edge of the printing paper is a continuous, parallel to the decor edge trim with at least one longitudinal color strip is printed, which is ultimately printed parallel to the decor, and that the print quality is monitored in dependence on the edge strip marking. Thus, according to the invention, the print quality of the decoration is derived as a whole from the print quality of the marginal strip. If the edge strip has a poor print quality, this means that the decor does not have sufficient quality. The invention thus ultimately provides a method which makes it possible in a simple manner to check by means of an outer edge strip whether the print quality of the decoration overall corresponds to a predetermined print quality. It should be pointed out in this context that the present invention not only extends to printing paper in sheet form, but also in particular for printing paper webs, that is to say on printing paper which is printed on the roll and subsequently rolled up in the printed state. In the latter case, the edge strip marking then extends over the entire length of the printing paper web.

In Verbindung mit der vorliegenden Erfindung ist ergänzend vorgesehen, zusätzlich zu der Randstreifenmarkierung Cut-Markierungen im Randbereich des Druckpapiers vorzusehen. Dies bezieht sich natürlich auf Ausführungsformen, bei denen das Druckpapier von einer Rolle abgezogen und bedruckt wird. Cut-Markierungen dienen dazu, diejenigen Stellen anzuzeigen, an denen das Druckpapier anschließend zu einzelnen Bögen geschnitten wird. Des weiteren können Ausrichtmarkierungen vorgesehen sein, die letztlich zur Ausrichtung bei der Weiterverarbeitung der geschnittenen Bögen dienen. Im Zusammenhang mit dem erfindungsgemäßen Verfahren ist es nun so, daß in Abhängigkeit der Druckqualität des Dekors nach einer Unterbrechung des Druckvorgangs und anschließender Fortsetzung eine Cut-Markierung variabel angeordnet wird. Die variable Anordnung der Cut-Markierung erfolgt in Abhängigkeit der Druckqualität des Dekors. Letztlich wird bei der Erfindung also die Druckqualität des Dekors entsprechend automatisch überwacht. Ist beispielsweise die Druckqualität bei einem Wiederanlaufen der digitalen Druckvorrichtung bzw. Fortsetzen des Druckvorgangs schlecht, wird zunächst keine Cut-Markierung gesetzt. Erst wenn die Druckqualität des Dekors den notwendigen Anforderungen entspricht, wird eine entsprechende Cut-Markierung gesetzt. Mit dem Drucken einer Cut-Markierung ist verbunden, daß gleichzeitig oder anschließend begonnen wird, ein neues Dekorbild zu drucken.In connection with the present invention, it is additionally provided to provide cut markings in the edge region of the printing paper in addition to the marginal strip marking. Of course, this refers to embodiments in which the printing paper is peeled from a roll and printed. Cut marks are used to indicate those locations where the print paper is subsequently cut into individual sheets. Furthermore, alignment marks can be provided, which ultimately serve for alignment in the further processing of the cut sheets. In connection with the method according to the invention, it is now the case that, depending on the print quality of the decoration, a cut mark is variably arranged after an interruption of the printing process and subsequent continuation. The variable arrangement of the cut mark depends on the print quality of the decor. Ultimately, in the invention so automatically monitors the print quality of the decor. If, for example, the print quality is poor when the digital printing device resumes or the printing process continues, no cut mark is initially set. Only when the print quality of the decor meets the necessary requirements, a corresponding cut mark is set. Printing a cut mark entails simultaneously or subsequently starting printing a new decor image.

Besonders bevorzugt ist es in diesem Zusammenhang, daß die Farbe des Farbstreifens der Farbe des Druckkopfes entspricht. Hierbei wird dann die Farbe des Randstreifens der Randstreifenmarkierung überwacht. Ein solcher Farbvergleich ist in der Regel einfacher vorzunehmen als ein Farbvergleich innerhalb eines gesamten Dekorbildes. Auch hier erfolgt letztlich ein Ist-Soll-Vergleich der Farbe des Randstreifens mit der vorgegebenen Farbe des betreffenden Druckkopfes.It is particularly preferred in this context that the color of the color strip corresponds to the color of the print head. In this case, the color of the edge strip of the edge strip marking is then monitored. Such color comparison is usually easier to do than a color comparison within an entire decor image. Again, there is ultimately an actual-target comparison of the color of the edge strip with the predetermined color of the printhead in question.

Besonders günstig ist es in diesem Zusammenhang, daß die Anzahl der Farbstreifen der Randstreifenmarkierung der Anzahl der aktiven Druckköpfe der Druckvorrichtung entspricht. Auf diese Weise kann dann festgestellt werden, ob alle aktiven Druckköpfe funktionieren und Druckfarbe in der gewünschten Qualität abgeben. Wird bei der Randstreifenüberwachung eine Qualitätseinschränkung festgestellt, bedeutet dies, daß auch das Dekorbild Qualitätseinschränkungen hat.It is particularly favorable in this context that the number of color stripes of the edge strip marking corresponds to the number of active print heads of the printing device. In this way, it can then be determined whether all active printheads work and deliver ink of the desired quality. If a quality restriction is detected in the marginal strip monitoring, this means that the decorative image also has quality restrictions.

Grundsätzlich ist es möglich, daß der Druck einer Cut-Markierung manuell und/oder automatisch initiierbar ist. So kann beispielsweise die Druckqualität nach einem Fortsetzen des Druckvorgangs manuell überwacht werden. Wird die Druckqualität des Dekors für hinreichend erachtet, wird durch Initiierung eines entsprechenden Befehls mit dem Druck der Cut-Markierung begonnen. Gleichzeitig wird dann auf dem nächsten Papierabschnitt ein neues Dekorbild gedruckt. Bevorzugt ist es natürlich, daß der Druck der Cut-Markierung automatisch initiiert wird. In diesem Falle ist es zweckmäßig, wenn die Druckqualität des Dekors automatisch überwacht wird. Hierdurch kann die Digitaldruckvorrichtung letztlich komplett automatisch betrieben werden.In principle, it is possible that the pressure of a cut mark can be initiated manually and / or automatically. For example, the print quality can be manually monitored after resuming the printing process. If the print quality of the decor is considered adequate, initiate an appropriate command to start printing the cut mark. At the same time, a new decorative image is then printed on the next paper section. It is preferable, of course, that the pressure of the cut mark be automatically initiated. In this case, it is expedient if the print quality of the decor is automatically monitored. As a result, the digital printing device can ultimately be operated completely automatically.

Von besonderem Vorteil ist es in diesem Zusammenhang, wenn die Druckqualität des Dekors mittels einer optischen Überwachungseinrichtung überwachbar ist, die der Digitaldruckvorrichtung zugeordnet ist. Dabei sollte vorzugsweise vorgesehen sein, daß die optische Überwachungseinrichtung das aktuelle Druckergebnis nach einer Unterbrechung und anschließender Fortsetzung des Druckvorgangs mit einer vorgegebenen Druckqualität vergleicht und bei einer vorgegebenen Übereinstimmung des aktuellen Druckergebnisses mit der vorgegebenen Druckqualität den Druck einer Cut-Markierung automatisch initiiert. Gleichzeitig wird damit ein neuer Papierabschnitt definiert und mit dem Druck des Dekorbildes auf diesem Papierabschnitt begonnen.It is particularly advantageous in this context if the print quality of the decoration can be monitored by means of an optical monitoring device which is associated with the digital printing device. It should preferably be provided that the optical monitoring device compares the current print result after an interruption and subsequent continuation of the printing process with a predetermined print quality and automatically initiates the pressure of a cut mark at a predetermined match of the current print result with the predetermined print quality. At the same time a new paper section is defined and started with the printing of the decorative image on this paper section.

Grundsätzlich ist es möglich, daß die Überwachungseinrichtung unmittelbar die Druckqualität des Dekors und damit das Dekorbild im Hinblick auf seine Druckqualität überwacht. In diesem Falle ist ein entsprechender Sensor oberhalb des Dekors angeordnet und vergleicht dann die Druckqualität des Dekorbildes mit der vorgegebenen Druckqualität. Es findet also ein Ist-Soll-Vergleich des Dekorbildes als solches bzw. dessen Farben statt.In principle, it is possible that the monitoring device directly monitors the print quality of the decor and thus the decor image with regard to its print quality. In this case, a corresponding sensor is arranged above the decor and then compares the print quality of the decorative image with the specified print quality. Thus, there is an actual target comparison of the decorative image as such or its colors.

Nachfolgend wird ein Ausführungsbeispiel der vorliegenden Erfindung anhand der Zeichnung erläutert. In der Zeichnung ist ein Druckpapier 1 in Form einer langgestreckten Bahn von einer Rolle dargestellt. Bei dem Druckpapier 1 kann es sich um übliches beharztes, teilbeharztes oder durchbeharztes Papier handeln, das druckseitig eine Tintenaufnahmeschicht aufweisen kann oder auch nicht. Druckseitig auf dem Druckpapier befindet sich ein aufgedrucktes Dekor 2. Bei dem Dekor 2 kann es sich um jedes beliebige Bild handeln. Das Dekor 2 weist wenigstens ein Dekorbild 3 auf. Vorliegend sind eine Vielzahl von Dekorbildern 3 vorgesehen, die in Längsrichtung L hintereinander angeordnet sind.Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. In the drawing, a printing paper 1 is shown in the form of an elongated web of a roll. The printing paper 1 may be conventional resinated, partially resinated or doctored paper which may or may not have an ink receiving layer on the printing side. Printed on the printing paper is a printed decor 2. The decor 2 can be any image. The decor 2 has at least one decorative image 3. In the present case, a plurality of decorative images 3 are provided, which are arranged one behind the other in the longitudinal direction L.

Zusätzlich zu dem Dekor 2 sind randseitig, und zwar im Randbereich 4, 5 beider Längsränder des Druckpapiers 1, jeweils eine Mehrzahl von Markierungen vorgesehen. Bei den Markierungen handelt es sich einerseits um sogenannte Cut-Markierungen 6, 7, 8 sowie um Ausrichtmarkierungen 9. Die Cut-Markierungen 6, 7, 8 und Ausrichtmarkierungen 9 liegen einander jeweils gegenüber. Die einander gegenüberliegenden Cut-Markierungen 6 und die einander gegenüberliegenden Cut-Markierungen 7 definieren einen Papierabschnitt 10, auf dem sich ein Dekorbild 13 befindet.In addition to the decor 2, a plurality of markings are respectively provided on the edge, namely in the edge region 4, 5 of both longitudinal edges of the printing paper 1. On the one hand, the markings are so-called cut marks 6, 7, 8 as well as alignment marks 9. The cut marks 6, 7, 8 and alignment markings 9 face one another in each case. The opposite cut marks 6 and the opposite Cut marks 7 define a paper section 10 on which a decorative image 13 is located.

Die Cut-Markierungen 6, 7 dienen vorliegend als Anzeige zum Zerteilen der Druckpapierbahn in einzelne Bögen. Die Ausrichtmarkierungen dienen in diesem Zusammenhang zur entsprechenden Ausrichtung der Druckpapierbahn. Beim Zerteilen/Zerschneiden der Druckpapierbahn in einzelne Bögen kann auch der jeweilige Papierabschnitt dann weiter zugeschnitten werden. Bei der dargestellten Ausführungsform ist es so, daß das Dekorbild 13 fünf gleiche Dekorabschnitte 14 aufweist, die bei der weiteren Verarbeitung mit plattenförmigen Grundkörpern zu flächigen Bauteilen, wie Paneelen oder Platten zur Boden-, Wand-, Decken- oder Möbelanwendungen verpreßt werden. Im übrigen versteht es sich, daß die Anzahl der Dekorabschnitte nicht auf fünf, wie dies dargestellt ist, beschränkt ist. Es kann auch eine größere oder eine kleinere Anzahl von Dekorabschnitten pro Dekorbild 13 vorgesehen sein.The cut marks 6, 7 serve in the present case as a display for dividing the printing paper web into individual sheets. The alignment marks are used in this context for the corresponding orientation of the printing paper web. When dividing / cutting the printing paper web into individual sheets and the respective paper section can then be further tailored. In the illustrated embodiment, it is such that the decorative image 13 has five identical decor sections 14, which are pressed in the further processing with plate-shaped bodies to flat components, such as panels or panels for floor, wall, ceiling or furniture applications. Incidentally, it is understood that the number of the decorative portions is not limited to five, as shown. It can also be a larger or smaller number of decor sections per decorative image 13 may be provided.

Bei der dargestellten Ausführungsform ist es nun so, daß die einzelnen Cut-Markierungen 6, 7, 8 in unterschiedlichen Abständen zueinander angeordnet sind. Der übliche Abstand zweier Cut-Markierungen und damit das übliche Maß des durch die Cut-Markierungen definierten Papierabschnitts wird durch den Abstand benachbarter Cut-Markierungen 6, 7 an einem Randbereich bestimmt. Der Abstand der Cut-Markierungen 7 und 8 ist erheblich geringer als der Abstand der Cut-Markierungen 6, 7. Der Abstand der Cut-Markierung 8 zur nicht mehr dargestellten aber in Längsrichtung folgenden Cut-Markierung entspricht letztlich wieder dem Abstand der Cut-Markierungen 6, 7.In the illustrated embodiment, it is now so that the individual cut marks 6, 7, 8 are arranged at different distances from each other. The usual distance between two cut marks and thus the usual amount of the paper section defined by the cut marks is determined by the spacing of adjacent cut marks 6, 7 at an edge area. The distance of the cut marks 7 and 8 is considerably smaller than the distance of the cut markers 6, 7. The distance of the cut mark 8 to not shown but in the longitudinal direction following cut mark ultimately corresponds again to the distance of the cut marks 6, 7.

Das Verfahren zum Bedrucken des Druckpapiers 1 erfolgt nun derart, daß das Druckpapier 1 von einer Lehrpapierrolle einer digitalen Druckvorrichtung zugeführt wird. Hierbei kann es sich um einen Ink-Jet-Drucker handeln, über den das Dekor 2 aufgedruckt wird. Vor Beginn des Druckvorganges wird das Druckpapier 1 von der Leerpapierrolle durch eine entsprechende Papierzuführung der digitalen Druckvorrichtung hindurchgeführt zu einer Papierabführung, auf der das Druckpapier 1 zu einer bedruckten Druckpapierrolle aufgewickelt wird. Anschließend kann mit dem Druckvorgang begonnen werden. So wird beispielsweise zum Drucken des Dekorbildes 13 zunächst beidseitig die Cut-Markierung 6 gedruckt. Gleichzeitig dazu wird über die Druckköpfe, die sich an dem an einer Druckerführung verfahrbaren Druckerschlitten befinden, das Dekorbild 13 gedruckt. Nachdem zwischenzeitlich die Ausrichtmarkierungen 9 gedruckt worden sind, werden zum Ende des Dekorbildes 13 die Cut-Markierungen 7 gedruckt. Die Cut-Markierungen 7 bilden dabei einerseits das Ende des Papierabschnittes 10 und den Beginn des Papierabschnittes 11 mit einem entsprechenden Dekorbild 13.The method for printing on the printing paper 1 is carried out in such a manner that the printing paper 1 is fed from a teaching paper roll to a digital printing device. This can be an ink-jet printer, over which the decor 2 is printed. Before the start of printing, the printing paper 1 is passed from the blank paper roll through a corresponding paper feed of the digital printing apparatus to a paper discharge on which the printing paper 1 is wound into a printed printing paper roll. Then you can start printing. For example, to print the decorative image 13, the cut mark 6 is first printed on both sides. At the same time, via the printheads, which are located on the printer carriage which can be moved on a printer guide, the decorative image 13 is printed. After the registration marks 9 have been printed in the meantime, the cut marks 7 are printed at the end of the decorative image 13. The cut marks 7 on the one hand form the end of the paper section 10 and the beginning of the paper section 11 with a corresponding decorative image 13.

Vorliegend sind die einzelnen Dekorbilder 13 auf den Papierabschnitten 10, 11, 12 identisch. Dies muß jedoch nicht so sein. Grundsätzlich können auch unterschiedliche Dekorbilder 13 auf den einzelnen Papierabschnitten 10, 11, 12 vorgesehen sein.In the present case, the individual decorative images 13 on the paper sections 10, 11, 12 are identical. However, this does not have to be the case. In principle, different decorative images 13 on the individual paper sections 10, 11, 12 may be provided.

Während des Druckes des Dekorbildes 13 auf dem Papierabschnitt 11 wird nun der Druckvorgang unterbrochen. Dies kann beispielsweise aus Wartungsgründen oder zum Austausch eines Tintentanks erforderlich sein. Anschlie-βend wird der Druckvorgang fortgesetzt. Während des gesamten Druckvorgangs wird die Druckqualität des Dekors 2 bzw. des jeweiligen Dekorbildes 13 überwacht. Hierbei handelt es sich um eine automatische Überwachung mittels einer im einzelnen nicht dargestellten Überwachungseinrichtung. Wird bei der optischen Überwachung nach der Wiederaufnahme der Drucktätigkeit festgestellt, daß die Druckqualität des Dekorbildes 13 den vorgegebenen Anforderungen entspricht, werden die Cut-Markierungen 8 gedruckt. Die Cut-Markierungen 8 begrenzen den Papierabschnitt 11 und stellen den Beginn des Papierabschnitts 12 mit einem neuen Dekorbild 13 dar.During the printing of the decorative image 13 on the paper section 11, the printing process is now interrupted. This may be necessary, for example, for maintenance reasons or to replace an ink tank. Then the printing process continues. During the entire printing process, the print quality of the decor 2 or the respective decorative image 13 is monitored. This is an automatic monitoring by means of a monitoring device, not shown in detail. If it is determined in the optical monitoring after the resumption of printing activity that the print quality of the decorative image 13 corresponds to the predetermined requirements, the cut marks 8 are printed. The cut marks 8 delimit the paper section 11 and represent the beginning of the paper section 12 with a new decorative image 13.

Zur Überwachung der Druckqualität weist die optische Überwachungseinrichtung wenigstens einen optischen Sensor 15, 16 auf. Im dargestellten Ausführungsbeispiel ist der optische Sensor 15 unmittelbar auf das Dekorbild 13 gerichtet, während der optische Sensor 16 auf eine Randstreifenmarkierung 17 gerichtet ist, die parallel zum Dekor 2 randseitig verläuft und parallel und gleichzeitig zu den Dekorbildern 13 gedruckt wird. Die Randstreifenmarkierung 17 weist vorliegend eine Mehrzahl von Randstreifen 18 auf. Die einzelnen Randstreifen 18 sind farbig und entsprechen von ihrer Farbe und Anzahl der Farbe und Anzahl der aktiven Druckköpfe der Druckvorrichtung.For monitoring the print quality, the optical monitoring device has at least one optical sensor 15, 16. In the illustrated embodiment, the optical sensor 15 is directed directly to the decorative image 13, while the optical sensor 16 is directed to a marginal strip 17, which extends parallel to the decor 2 edge and parallel to the decorative images 13 is printed. The edge strip marking 17 in the present case has a plurality of edge strips 18. The individual marginal strips 18 are colored and correspond in color and number to the color and number of active printheads of the printing device.

Die beiden Sensoren 15, 16, die unmittelbar im Anschluß an den Druckerschlitten bzw. die Druckköpfe angeordnet sind, können alternativ oder aber auch gemeinsam vorgesehen sein. In jedem Falle sind die beiden Sensoren 15, 16 letztlich mit einer Steuereinrichtung 19 der Druckvorrichtung 1 gekoppelt, die wiederum einen nicht dargestellten Vergleicher aufweist, bei dem in einem Ist-Soll-Vergleich das aktuelle Druckergebnis mit dem vorgegebenen Soll-Druck-Ergebnis verglichen wird.The two sensors 15, 16, which are arranged immediately following the printer carriage or the print heads, may alternatively or also be provided jointly. In any case, the two sensors 15, 16 are ultimately coupled to a control device 19 of the printing device 1, which in turn has a comparator, not shown, in which the actual pressure result is compared with the predetermined desired pressure result in an actual target comparison ,

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Druckpapierprinting paper
22
Dekordecor
33
Dekorbilddecorative image
44
Randbereichborder area
55
Randbereichborder area
66
Cut-MarkierungCut-mark
77
Cut-MarkierungCut-mark
88th
Cut-MarkierungCut-mark
99
Ausrichtmarkierungalignment
1010
Papierabschnittpaper section
1111
Papierabschnittpaper section
1212
Papierabschnittpaper section
1313
Dekorbilddecorative image
1414
Dekorabschnittdecor section
1515
optischer Sensoroptical sensor
1616
optischer Sensoroptical sensor
1717
RandstreifenmarkierungEdge strip marking
1818
Farbstreifencolor stripes
1919
Steuerungcontrol
LL
Längsrichtunglongitudinal direction

Claims (9)

  1. Method for imprinting printing paper (1) with a decor (2) comprising at least a decor image (3) for application with plate-shaped components, in particular for floor, wall, ceiling or furniture applications, wherein the printing paper (1) is drawn from a reel and is imprinted by means of a digital printing method by a digital printing device, wherein at the margin of the printing paper (1) a continuous edge stripe mark (17) is printed, which runs parallel to the decor (2) and comprises at least one longitudinally extending color stripe (18), and wherein the printing quality is monitored depending on the edge stripe mark (17),
    characterized in that
    after an interruption of the printing process and subsequent resumption, a cut mark (6, 7, 8) is printed depending on the printing quality of the decor (2), wherein the cut mark (6, 7, 8) is printed in the case that the printing quality complies with the predetermined requirements.
  2. Method according to claim 1, characterized in that the color of the color stripe (18) corresponds to the color of a printing head of the printing device.
  3. Method according to claim 1 or 2, characterized in that the number of color stripes (18) of the edge stripe mark (17) corresponds to the number of active printing heads of the printing device.
  4. Method according to any of the preceding claims, characterized in that the printing of a cut mark (6, 7, 8) can be initiated manually and/or automatically.
  5. Method according to any of the preceding claims, characterized in that the printing quality of the decor (2) can be monitored automatically.
  6. Method according to any of the preceding claims, characterized in that the printing quality can be monitored by means of an optical monitoring device.
  7. Method according to claim 6, characterized in that the optical monitoring device compares the actual printing result with a predetermined printing quality and, with a predetermined conformity of the actual printing result and the predetermined printing quality, automatically initiates the printing of a cut mark (6, 7, 8).
  8. Digital printing device for imprinting printing paper (1) drawn off a reel, with a decor (2) comprising at least a decor image (3) for application with plate-shaped components, in particular for floor, wall, ceiling or furniture applications, wherein an optical monitoring device is provided for monitoring the printing quality of the decor, characterized in that
    a control device is provided which is coupled to the monitoring device and which, after an interruption of the printing process and subsequent resumption, with a predetermined conformity of the actual printing result and the predetermined printing quality, automatically initiates the printing of a cut mark (6, 7, 8).
  9. Printing device according to claim 8, characterized in that the monitoring device comprises at least an optical sensor for monitoring the printing quality of the decor.
EP09772102A 2008-07-03 2009-06-23 Method and device for imprinting printing paper with a decor Active EP2296893B1 (en)

Priority Applications (1)

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PL09772102T PL2296893T3 (en) 2008-07-03 2009-06-23 Method and device for imprinting printing paper with a decor

Applications Claiming Priority (2)

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DE102008033273A DE102008033273B4 (en) 2008-07-03 2008-07-03 Method and digital printing device for printing on printing paper
PCT/EP2009/004494 WO2010000402A1 (en) 2008-07-03 2009-06-23 Method for imprinting printing paper and printing paper imprinted with a decor

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DE102011015603B3 (en) * 2011-03-30 2012-08-30 Fritz Egger Gmbh & Co. Og Process for the production of decorative paper and decorative paper
EP2556962A1 (en) * 2011-08-12 2013-02-13 hülsta-werke Hüls GmbH & Co. KG Method for digitally printing a printed image on a flat component
AU2017100981B4 (en) * 2017-07-19 2017-10-05 Ccl Secure Pty Ltd Method, system and apparatus for detecting coating materials on a substrate

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DE2728738B2 (en) * 1977-06-25 1979-05-10 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Eulrichtung for checking and regulating the coloring on printing machines
SE516696C2 (en) * 1999-12-23 2002-02-12 Perstorp Flooring Ab Process for producing surface elements comprising an upper decorative layer as well as surface elements produced according to the method
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JP4944321B2 (en) * 2001-09-26 2012-05-30 キヤノン株式会社 Color image forming apparatus
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PL2296893T3 (en) 2013-03-29
ES2395853T3 (en) 2013-02-15
EP2296893A1 (en) 2011-03-23
DE102008033273A1 (en) 2010-01-07
WO2010000402A1 (en) 2010-01-07

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