EP0737572A1 - Method for imprinting bar codes on a printed sheet and apparatus for carrying out the method - Google Patents

Method for imprinting bar codes on a printed sheet and apparatus for carrying out the method Download PDF

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Publication number
EP0737572A1
EP0737572A1 EP96104214A EP96104214A EP0737572A1 EP 0737572 A1 EP0737572 A1 EP 0737572A1 EP 96104214 A EP96104214 A EP 96104214A EP 96104214 A EP96104214 A EP 96104214A EP 0737572 A1 EP0737572 A1 EP 0737572A1
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EP
European Patent Office
Prior art keywords
sheet
guide drum
sheet guide
laser
sheets
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Granted
Application number
EP96104214A
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German (de)
French (fr)
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EP0737572B2 (en
EP0737572B1 (en
Inventor
Karlheinz Sellmann
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Manroland AG
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MAN Roland Druckmaschinen AG
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    • 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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/22—Clamps or grippers
    • B41J13/223—Clamps or grippers on rotatable drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/0032—Auxiliary numbering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/007—Apparatus or machines for carrying out printing operations combined with other operations with selective printing mechanisms, e.g. ink-jet or thermal printers

Definitions

  • the invention relates to a method for impressing bar codes, numbering and the like by means of laser or ink jet printers in sheets printed in one or more colors, and to a device for carrying out the method.
  • print carriers For various applications, print carriers must be individually identified after they have been printed in one or more colors with identical print images, for example with a bar code, with consecutive numbering or with recipient addresses. Previously, this required a separate printing process. With the now developed and marketable laser and inkjet printers, it is possible to carry out the individualizing marking directly after the actual printing process, ie to apply the marking contactlessly on the printing media moving at the usual printing speed. The print image generated with them can be applied at a sufficiently high speed and changed quickly enough from print carrier to print carrier.
  • a prerequisite for perfect print quality is that the distance between the print medium and the laser or inkjet printer is exactly maintained. This requirement is met in the case of a print carrier guided as a band through the printing press, because the print carrier can be pulled by means of the band tension over a fixed or rotating guide, which is arranged at a fixed distance from the laser or inkjet printer.
  • the prerequisite must only be met if the print image is dry and smear-proof and brushes and / or pressure rollers can be used to stabilize the distance, which ensure that the print sheet is in the print area for the subsequent marking is pressed against a sheet guide drum positioned exactly in relation to the printers. If the sheet is still fresh from the press, this is not possible because the printing means would blur the printed image. Since the sheet is held by grippers only at the start of printing in sheet-fed printing machines and, moreover, rests only loosely on the printing or guide cylinder, the distance to a laser or ink-jet printer arranged fixed to the housing cannot be maintained.
  • Thin pressure carriers tend to slide together on the cylinder, while thicker pressure carriers stand out from the cylinder due to the internal stress.
  • the distance between the sheet and the printer must not only be strictly observed in the area of the individual marking to be applied, it must also be ensured that the sheet does not touch the printer over its entire length and possibly damage it during the passage.
  • the invention is based on the object of specifying a method for applying an individualizing marking by means of a laser or inkjet printer, which also includes freshly printed sheets without loss of quality is applicable, and to create a suitable device for performing the method.
  • the sheets are passed immediately after printing by means of a sheet guide drum past one or more radially arranged to the sheet guide drum laser or inkjet printers and that the sheet ends are tightly against the sheet guide drum being held.
  • the sheet end is preferably held firmly against the sheet guide drum by means of negative pressure, the means for stopping the sheet end on the sheet guide drum being adjustable to different sheet lengths.
  • the sheet end can also be held firmly against the sheet guide drum by means of electrostatic charging.
  • a device for carrying out the method, the sheet end being held firmly against the sheet guide drum by means of negative pressure, is expediently designed in such a way that preferably between a sheet printing machine and a delivery system a sheet guide drum with at least one row of grippers is drivably mounted in a housing, which has a row of suction heads for each row of grippers and that at least one laser or ink jet printer is arranged radially to the sheet guide drum in the housing.
  • This arrangement is very space-saving and can easily be carried out retrospectively on existing sheet-fed printing machines. It allows an individualizing identification to be applied to the printing sheet immediately after the actual printing process, without the sheets having to be stored temporarily and without the normal printing speed having to be reduced.
  • Modern printing machines can print 15,000 to 18,000 sheets per hour in multicolor, which corresponds to a throughput speed of 180 to 220 m / min. Such speeds are not a problem for laser printers.
  • Even inkjet printers for attaching individualized markings can be operated at 200 m / min and achieve almost the same print quality as laser printers. Even 600 m / min are possible if the individualizing marking is relatively simple, such as a bar code running in the working direction, or if the highest printing quality is not required for the marking.
  • the suction heads rotating with the sheet guide drum can be adjusted in relation to the grippers in the circumferential direction to different sheet lengths, ie they are rotated relative to the sheet guide drum so far before the start of the printing machine that they grip the end of the sheet with certainty. It can also be provided that the suction heads are designed to move the sheets relative to the sheet guide drum movable. For this purpose, they are moved once from a rest position against the sheet running direction into one Adjusted working position and returned to the gripper after the release of the sheet in the rest position. In this respect, suction heads that are cyclically movable relative to the sheet guide drum can be used, as have become known for the front and side edge alignment of printed sheets.
  • the device for carrying out the method in the area of transferring the sheets onto the sheet guide drum can also be equipped with a device for electrostatically charging the sheet guide drum and the sheets.
  • a device for electrostatically discharging the sheets must also be provided in the area of the delivery system.
  • the laser or ink jet printer is arranged in the housing in an adjustable manner by means of guides and rollers parallel to the axis of the sheet guide drum. This means that the marking can be positioned across the sheet running direction. Positioning in the direction of sheet travel takes place via a controller for the laser or inkjet printer coupled to the printing press. Finally, it is provided that the distance of the laser or inkjet printer can be adjusted from the sheet guide drum to sheets of different thicknesses.
  • the drawing shows a simplified representation of a partial longitudinal section through the area at the end of a sheet-fed printing press 1, which is followed by a delivery system 2.
  • a sheet guide drum 3 with two rows of grippers 4 is drivably mounted in the housing 5.
  • the sheet guide drum 3 takes over the freshly printed sheets from the printing cylinder 13 of the last printing unit via an intermediate cylinder 14.
  • two rows of suction heads 6 are arranged in the circumferential direction relative to the grippers 4 so that they can be adjusted by motor or manually so that the beginning of the sheet is gripped by the grippers 4 and the sheet end can be held tightly against the sheet guide drum 3.
  • the device further comprises two laser or ink jet printers 7, 8, which are adjustable parallel to the axis of the sheet guide drum 3 in the housing 5 by means of guides 9 and rollers 10 engaging in them. (Not shown for the printer 8.)
  • the rollers 10 are rotatably mounted on the printers 7, 8.
  • the radial setting of the laser or inkjet printer 7, 8 to regulate the distance from the sheet guide drum 3 or to adapt to sheets of different thicknesses can be such that either the guide 9 radially to the axis of the sheet guide drum 3 or that the rollers 10 relative to the Printers 7, 8 are radially adjustable.
  • a device 11 for electrostatically charging the sheet guide drum 3 and the sheets can also be provided. It is conveniently in Area of taking over the sheets arranged on the sheet guide drum 3. This then includes a device 12 for electrostatically unloading the sheets, which is to be arranged in the area of the delivery system 2, so that the sheets can be released from the printing press without disruptive electrostatic charging.
  • the assembly of sheet guide drum and laser or inkjet printer can be located at another suitable location on a printing press, e.g. be arranged in front of the first printing unit or between two printing units.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Handling Of Cut Paper (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Ink Jet (AREA)
  • Common Mechanisms (AREA)
  • Rotary Presses (AREA)
  • Printers Characterized By Their Purpose (AREA)
  • Record Information Processing For Printing (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Abstract

The bar code printing system has the printed sheets fed immediately after printing to one or more ink jet or laser printers (7,8), for printing the bar code, positioned radially relative to a sheet feed drum (3). The end of the printed sheet is held in contact with the sheet feed drum via a series of grippers (4) and corresponding suction heads (6), adjustable for different printed sheet sizes.

Description

Die Erfindung betrifft ein Verfahren zum Eindrucken von Strichcodes, Numerierungen und dergleichen mittels Laser- oder Tintenstrahldruckern in ein- oder mehrfarbig bedruckte Bogen sowie auf eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a method for impressing bar codes, numbering and the like by means of laser or ink jet printers in sheets printed in one or more colors, and to a device for carrying out the method.

Für verschiedene Anwendungszwecke müssen Druckträger nach dem ein- oder mehrfarbigen Bedrucken mit identischen Druckbildern anschließend noch individualisierend gekennzeichnet werden, beispielsweise mit einem Strichcode, mit einer fortlaufenden Numerierung oder mit Empfängeradressen. Dazu war bisher ein gesonderter Druckvorgang erforderlich. Mit den inzwischen entwickelten und marktgängigen Laser- und Tintenstrahldruckern ist es möglich, die individualisierende Kennzeichnung direkt im Anschluß an den eigentlichen Druckvorgang durchzuführen, d.h. die Kennzeichnung berührungslos auf den mit der üblichen Druckgeschwindigkeit bewegten Druckträgern anzubringen. Das mit ihnen erzeugte Druckbild kann mit hinreichend großer Geschwindigkeit aufgebracht und von Druckträger zu Druckträger schnell genug verändert werden.For various applications, print carriers must be individually identified after they have been printed in one or more colors with identical print images, for example with a bar code, with consecutive numbering or with recipient addresses. Previously, this required a separate printing process. With the now developed and marketable laser and inkjet printers, it is possible to carry out the individualizing marking directly after the actual printing process, ie to apply the marking contactlessly on the printing media moving at the usual printing speed. The print image generated with them can be applied at a sufficiently high speed and changed quickly enough from print carrier to print carrier.

Voraussetzung für eine einwandfreie Druckqualität ist allerdings, daß der Abstand zwischen dem Druckträger und dem Laser- oder Tintenstrahldrucker exakt eingehalten wird. Diese Voraussetzung ist bei einem als Band durch die Druckmaschine geführten Druckträger gegeben, weil der Druckträger mittels der Bandspannung über eine feststehende oder mitdrehende Führung gezogen werden kann, die in festem Abstand gegenüber dem Laser- oder Tintenstrahldrucker angeordnet ist.A prerequisite for perfect print quality, however, is that the distance between the print medium and the laser or inkjet printer is exactly maintained. This requirement is met in the case of a print carrier guided as a band through the printing press, because the print carrier can be pulled by means of the band tension over a fixed or rotating guide, which is arranged at a fixed distance from the laser or inkjet printer.

Handelt es sich jedoch bei den Druckträgern um einzelne Bogen, ist die Voraussetzung jedoch nur zu erfüllen, wenn das Druckbild trocken und abschmierfest ist und zur Stabilisierung des Abstandes Bürsten und/oder Andruckrollen benutzt werden können, die dafür sorgen, daß der Druckbogen im Druckbereich für die nachträgliche Kennzeichnung gegen eine gegenüber den Druckern genau positionierte Bogenführungstrommel angedrückt wird. Bei einem noch druckfrischen Bogen ist dies nicht möglich, weil die Abdrückmittel das Druckbild verwischen würden. Da in Bogendruckmaschinen der Bogen nur am Druckanfang durch Greifer gehalten wird und im übrigen nur lose auf dem Druck- oder Führungszylinder aufliegt, kann der Abstand zu einem gehäusefest angeordneten Laser- oder Tintenstrahldrucker nicht eingehalten werden. Dabei neigen dünne Druckträger zum Zusammenrutschen auf dem Zylinder, während sich dickere Druckträger infolge der Eigenspannung vom Zylinder abheben. Im übrigen muß der Abstand zwischen Bogen und Drucker nicht nur im Bereich der aufzubringenden individuellen Kennzeichnung genau eingehalten werden, es muß auch dafür gesorgt werden, daß der Bogen während des Durchlaufs über seine gesamte Länge den Drucker nicht berührt und gegebenenfalls beschädigt.However, if the print carriers are individual sheets, the prerequisite must only be met if the print image is dry and smear-proof and brushes and / or pressure rollers can be used to stabilize the distance, which ensure that the print sheet is in the print area for the subsequent marking is pressed against a sheet guide drum positioned exactly in relation to the printers. If the sheet is still fresh from the press, this is not possible because the printing means would blur the printed image. Since the sheet is held by grippers only at the start of printing in sheet-fed printing machines and, moreover, rests only loosely on the printing or guide cylinder, the distance to a laser or ink-jet printer arranged fixed to the housing cannot be maintained. Thin pressure carriers tend to slide together on the cylinder, while thicker pressure carriers stand out from the cylinder due to the internal stress. In addition, the distance between the sheet and the printer must not only be strictly observed in the area of the individual marking to be applied, it must also be ensured that the sheet does not touch the printer over its entire length and possibly damage it during the passage.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Anbringen einer individualisierenden Kennzeichnung mittels Laser- oder Tintenstrahldrucker anzugeben, das auch bei druckfrischen Bogen ohne Qualitätseinbuße anwendbar ist, und eine zur Durchführung des Verfahrens geeignete Vorrichtung zu schaffen.The invention is based on the object of specifying a method for applying an individualizing marking by means of a laser or inkjet printer, which also includes freshly printed sheets without loss of quality is applicable, and to create a suitable device for performing the method.

Zur Lösung dieser Aufgabe wird bei einem Verfahren der eingangs genannten Art vorgeschlagen, daß die Bogen unmittelbar anschließend an das Bedrucken mittels einer Bogenführungstrommel an einem oder mehreren, radial zur Bogenführungstrommel angeordneten Laser- oder Tintenstrahldruckern vorbeigeführt werden und daß dabei die Bogenenden an der Bogenführungstrommel fest anliegend gehalten werden.To solve this problem it is proposed in a method of the type mentioned that the sheets are passed immediately after printing by means of a sheet guide drum past one or more radially arranged to the sheet guide drum laser or inkjet printers and that the sheet ends are tightly against the sheet guide drum being held.

Auf diese Weise wird der Bogen über seine ganze Länge gegen die Bogenführungstrommel angedrückt. Er kann sich nicht mehr von der Bogenführungstrommel abheben oder auf ihr zusammenrutschen. Damit sind die Abstandsänderungen zwischen Druckträger und Laser- oder Tintenstrahldrucker auf Dickenunterschiede der Bogen bzw. Unrundheiten und/oder Exzentrizitäten der Bogenführungstrommel beschränkt. Beide Einflußgrößen können im allgemeinen aber so klein gehalten werden, daß die Qualität des mittels Laser- oder Tintenstrahldrucker erzeugten Druckbildes nicht beeinträchtigt wird.In this way, the sheet is pressed against the sheet guide drum over its entire length. He can no longer lift off the sheet guide drum or slide on it. The changes in the distance between the print carrier and the laser or inkjet printer are thus limited to differences in the thickness of the sheets or out-of-roundness and / or eccentricities of the sheet guide drum. In general, however, both influencing variables can be kept so small that the quality of the printed image produced by means of a laser or inkjet printer is not impaired.

Das Bogenende wird vorzugsweise mittels Unterdruck an der Bogenführungstrommel fest anliegend gehalten, wobei die Mittel zum Anhalten des Bogenendes an der Bogenführungstrommel auf unterschiedliche Bogenlängen einstellbar sind. Alternativ kann das Bogenende auch mittels elektrostatischer Aufladung an der Bogenführungstrommel fest anliegend gehalten werden.The sheet end is preferably held firmly against the sheet guide drum by means of negative pressure, the means for stopping the sheet end on the sheet guide drum being adjustable to different sheet lengths. Alternatively, the sheet end can also be held firmly against the sheet guide drum by means of electrostatic charging.

Eine Vorrichtung zur Durchführung des Verfahrens, wobei das Bogenende mittels Unterdruck an der Bogenführungstrommel fest anliegend gehalten wird, ist zweckmäßigerweise so ausgebildet, daß vorzugsweise zwischen einer Bogendruckmaschine und einem Auslagesystem eine Bogenführungstrommel mit wenigstens einer Reihe von Greifern in einem Gehäuse antreibbar gelagert ist, die zu jeder Reihe von Greifern eine Reihe von Saugköpfen aufweist und daß im Gehäuse wenigstens ein Laser- oder Tintenstrahldrucker radial zur Bogenführungstrommel angeordnet ist.A device for carrying out the method, the sheet end being held firmly against the sheet guide drum by means of negative pressure, is expediently designed in such a way that preferably between a sheet printing machine and a delivery system a sheet guide drum with at least one row of grippers is drivably mounted in a housing, which has a row of suction heads for each row of grippers and that at least one laser or ink jet printer is arranged radially to the sheet guide drum in the housing.

Diese Anordnung ist sehr platzsparend und kann ohne weiteres auch nachträglich bei vorhandenen Bogendruckmaschinen vorgenommen werden. Sie erlaubt es, unmittelbar im Anschluß an den eigentlichen Druckvorgang auf den Druckbogen noch eine individualisierende Kennzeichnung anzubringen, ohne daß eine Zwischenlagerung der Bogen erforderlich ist und ohne daß die normale Druckgeschwindigkeit reduziert werden muß. Moderne Druckmaschinen können pro Stunde 15.000 bis 18.000 Bogen mehrfarbig bedrucken, was einer Durchlaufgeschwindigkeit von 180 bis 220 m/min entspricht. Derartige Geschwindigkeiten sind für Laserdrucker kein Problem. Selbst Tintenstrahldrucker zum Anbringen von individualisierenden Kennzeichnungen können mit 200 m/min betrieben werden und erreichen dabei nahezu die gleiche Druckqualität wie Laserdrucker. Selbst 600 m/min sind möglich, wenn die individualisierende Kennzeichnung verhältnismäßig einfach ist, wie beispielsweise ein in Arbeitsrichtung verlaufender Strichcode, oder wenn für die Kennzeichnung nicht die allerhöchste Druckqualität gefordert wird.This arrangement is very space-saving and can easily be carried out retrospectively on existing sheet-fed printing machines. It allows an individualizing identification to be applied to the printing sheet immediately after the actual printing process, without the sheets having to be stored temporarily and without the normal printing speed having to be reduced. Modern printing machines can print 15,000 to 18,000 sheets per hour in multicolor, which corresponds to a throughput speed of 180 to 220 m / min. Such speeds are not a problem for laser printers. Even inkjet printers for attaching individualized markings can be operated at 200 m / min and achieve almost the same print quality as laser printers. Even 600 m / min are possible if the individualizing marking is relatively simple, such as a bar code running in the working direction, or if the highest printing quality is not required for the marking.

Die mit der Bogenführungstrommel umlaufenden Saugköpfe sind relativ zu den Greifern in Umfangsrichtung auf verschiedene Bogenlängen einstellbar, d.h. sie werden vor dem Start der Druckmaschine relativ zur Bogenführungstrommel so weit verdreht, daß sie mit Sicherheit das Bogenende erfassen. Außerdem kann man vorsehen, daß die Saugköpfe zur Straffung der Bogen relativ zur Bogenführungstrommel beweglich ausgebildet sind. Dazu werden sie pro Bogen einmal aus einer Ruhestellung entgegen der Bogenlaufrichtung in eine Arbeitsstellung verstellt und nach der Freigabe des Bogens in die Ruhelage in Richtung auf die Greifer zurückgestellt. Insoweit kann auf relativ zur Bogenführungstrommel taktweise bewegliche Saugköpfe zurückgegriffen werden, wie sie für die Vorder- und Seitenkantenausrichtung von Druckbogen bekannt geworden sind.The suction heads rotating with the sheet guide drum can be adjusted in relation to the grippers in the circumferential direction to different sheet lengths, ie they are rotated relative to the sheet guide drum so far before the start of the printing machine that they grip the end of the sheet with certainty. It can also be provided that the suction heads are designed to move the sheets relative to the sheet guide drum movable. For this purpose, they are moved once from a rest position against the sheet running direction into one Adjusted working position and returned to the gripper after the release of the sheet in the rest position. In this respect, suction heads that are cyclically movable relative to the sheet guide drum can be used, as have become known for the front and side edge alignment of printed sheets.

Alternativ kann die Vorrichtung zur Durchführung des Verfahrens im Bereich der Übernahme der Bogen auf die Bogenführungstrommel auch mit einer Einrichtung zum elektrostatischen Aufladen der Bogenführungstrommel und der Bogen ausgestattet sein. In diesem Fall ist im Bereich des Auslagesystems noch eine Einrichtung zum elektrostatischen Entladen der Bogen vorzusehen. Diese Version hat den Vorteil, daß eine Einstellung auf unterschiedliche Bogenlängen nicht erforderlich ist, weil die Bogen im Durchlauf über ihre gesamte Länge aufgeladen werden und die Bogenführungstrommel auf ihrem gesamten Umfang aufgeladen ist. Sie ist allerdings nicht geeignet, wenn man auf eine Straffung des Bogens nicht verzichten kann, weil sich die elektrostatische Aufladung auf die gesamte Bogentrommel und den gesamten Bogen auswirkt und mit einer Bewegung der Aufladeeinrichtung relativ zu den Greifern keine die Bogen straffende Wirkung erzielt werden kann.Alternatively, the device for carrying out the method in the area of transferring the sheets onto the sheet guide drum can also be equipped with a device for electrostatically charging the sheet guide drum and the sheets. In this case, a device for electrostatically discharging the sheets must also be provided in the area of the delivery system. This version has the advantage that an adjustment to different sheet lengths is not necessary because the sheets are loaded continuously over their entire length and the sheet guide drum is loaded over its entire circumference. However, it is not suitable if the sheet cannot be tightened because the electrostatic charge affects the entire sheet drum and the entire sheet and a movement of the loading device relative to the grippers means that no sheet-tightening effect can be achieved.

Damit die individualisierende Kennzeichnung an einer beliebigen Stelle des Bogens angebracht werden kann ist vorgesehen, daß der Laser- oder Tintenstrahldrucker im Gehäuse mittels Führungen und Rollen parallel zur Achse der Bogenführungstrommel verstellbar angeordnet ist. Damit kann die Kennzeichnung quer zur Bogenlaufrichtung positioniert werden. Die Positionierung in Bogenlaufrichtung erfolgt über eine an die Druckmaschine angekoppelt Steuerung für den Laser- oder Tintenstrahldrucker. Schließlich ist noch vorgesehen, daß der Abstand des Laser- oder Tintenstrahldruckers von der Bogenführungstrommel auf unterschiedlich dicke Bogen einstellbar ist.So that the individualizing marking can be attached at any point on the sheet, it is provided that the laser or ink jet printer is arranged in the housing in an adjustable manner by means of guides and rollers parallel to the axis of the sheet guide drum. This means that the marking can be positioned across the sheet running direction. Positioning in the direction of sheet travel takes place via a controller for the laser or inkjet printer coupled to the printing press. Finally, it is provided that the distance of the laser or inkjet printer can be adjusted from the sheet guide drum to sheets of different thicknesses.

Weitere Einzelheiten werden anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Die Zeichnung zeigt in vereinfachter Darstellung einen Teil-Längsschnitt durch den Bereich am Ende einer Bogendruckmaschine 1, der ein Auslagesystem 2 nachgeschaltet ist. In diesem Bereich ist eine Bogenführungstrommel 3 mit zwei Reihen von Greifern 4 im Gehäuse 5 antreibbar gelagert. Die Bogenführungstrommel 3 übernimmt die druckfrischen Bogen vom Druckzylinder 13 des letzten Druckwerks über einen Zwischenzylinder 14. Innerhalb der Bogenführungstrommel 3 sind zwei Reihen von Saugköpfen 6 in Umfangsrichtung relativ zu den Greifern 4 motorisch oder manuell einstellbar so angeordnet, daß der Bogenanfang von den Greifern 4 erfaßt und das Bogenende an der Bogenführungstrommel 3 fest anliegend gehalten werden kann.Further details are explained in more detail using an exemplary embodiment shown in the drawing. The drawing shows a simplified representation of a partial longitudinal section through the area at the end of a sheet-fed printing press 1, which is followed by a delivery system 2. In this area, a sheet guide drum 3 with two rows of grippers 4 is drivably mounted in the housing 5. The sheet guide drum 3 takes over the freshly printed sheets from the printing cylinder 13 of the last printing unit via an intermediate cylinder 14. Within the sheet guide drum 3, two rows of suction heads 6 are arranged in the circumferential direction relative to the grippers 4 so that they can be adjusted by motor or manually so that the beginning of the sheet is gripped by the grippers 4 and the sheet end can be held tightly against the sheet guide drum 3.

Die Vorrichtung umfaßt ferner zwei Laser- oder Tintenstrahldrucker 7, 8, die parallel zur Achse der Bogenführungstrommel 3 im Gehäuse 5 mittels Führungen 9 und in diese eingreifender Rollen 10 verstellbar sind. (Für den Drucker 8 nicht dargestellt.) Die Rollen 10 sind an den Druckern 7, 8 drehbar gelagert.The device further comprises two laser or ink jet printers 7, 8, which are adjustable parallel to the axis of the sheet guide drum 3 in the housing 5 by means of guides 9 and rollers 10 engaging in them. (Not shown for the printer 8.) The rollers 10 are rotatably mounted on the printers 7, 8.

Die radiale Einstellung der Laser- oder Tintenstrahldrucker 7, 8 zur Regulierung des Abstandes von der Bogenführungstrommel 3 bzw. zur Anpassung an unterschiedlich dicke Bogen kann so erfolgen, daß entweder die Führung 9 radial zur Achse der Bogenführungstrommel 3 oder daß die Rollen 10 relativ zu den Druckern 7, 8 radial verstellbar sind.The radial setting of the laser or inkjet printer 7, 8 to regulate the distance from the sheet guide drum 3 or to adapt to sheets of different thicknesses can be such that either the guide 9 radially to the axis of the sheet guide drum 3 or that the rollers 10 relative to the Printers 7, 8 are radially adjustable.

Anstelle der Saugköpfe 6 kann auch eine Einrichtung 11 zum elektrostatischen Aufladen der Bogenführungstrommel 3 und der Bogen vorgesehen werden. Sie wird zweckmäßigerweise im Bereich der Übernahme der Bogen auf die Bogenführungstrommel 3 angeordnet. Dazu gehört dann eine Einrichtung 12 zum elektrostatischen Entladen der Bogen, die im Bereich des Auslagesystems 2 anzuordnen ist, damit die Bogen ohne störende elektrostatische Aufladung aus der Druckmaschine abgegeben werden können.Instead of the suction heads 6, a device 11 for electrostatically charging the sheet guide drum 3 and the sheets can also be provided. It is conveniently in Area of taking over the sheets arranged on the sheet guide drum 3. This then includes a device 12 for electrostatically unloading the sheets, which is to be arranged in the area of the delivery system 2, so that the sheets can be released from the printing press without disruptive electrostatic charging.

In Abweichung von der beschriebenen Anordnung kann die Baugruppe aus Bogenführungstrommel und Laser- oder Tintenstrahldrucker an einer anderen geeigneten Stelle einer Druckmaschine, z.B. vor dem ersten Druckwerk oder zwischen zwei Druckwerken angeordnet sein.In deviation from the arrangement described, the assembly of sheet guide drum and laser or inkjet printer can be located at another suitable location on a printing press, e.g. be arranged in front of the first printing unit or between two printing units.

Claims (12)

Verfahren zum Eindrucken von Strichcodes, Numerierungen oder dergleichen mittels Laser- oder Tintenstrahldruckern in ein- oder mehrfarbig bedruckte Bogen, dadurch gekennzeichnet, daß die Bogen unmittelbar anschließend an das Bedrucken mittels einer Bogenführungstrommel an einem oder mehreren, radial zur Bogenführungstrommel angeordneten Laser- oder Tintenstrahldruckern vorbei geführt werden und daß dabei die Bogenenden an der Bogenführungstrommel fest anliegend gehalten werden.Method for impressing bar codes, numbering or the like by means of laser or ink jet printers into sheets printed in one or more colors, characterized in that the sheets immediately after printing by means of a sheet guide drum past one or more laser or ink jet printers arranged radially to the sheet guide drum are performed and that the bow ends are held tightly against the sheet guide drum. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Bogenenden mittels Unterdruck an der Bogenführungstrommel fest anliegend gehalten werden.A method according to claim 1, characterized in that the bow ends are held firmly against the sheet guide drum by means of negative pressure. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Mittel zum Anhalten der Bogenenden an der Bogenführungstrommel auf unterschiedliche Bogenlängen einstellbar sind.A method according to claim 1 or 2, characterized in that the means for stopping the sheet ends on the sheet guide drum can be adjusted to different sheet lengths. Verfahren nach Anspruch 1 jedoch mit der Maßgabe, daß die Bogen mittels elektrostatischer Aufladung an der Bogenführungstrommel fest anliegend gehalten werden.The method of claim 1, however, with the proviso that the sheets are held firmly against the sheet guide drum by means of electrostatic charging. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß radial zu einer Bogenführungstrommel (3) einer Bogendruckmaschine (1), die wenigstens eine Reihe von Greifern (4) und zu jeder Reihe von Greifern (4) eine Reihe von Saugköpfen (6) aufweist, wenigstens ein Laser- oder Tintenstrahldrucker (7, 8) angeordnet ist.Apparatus for carrying out the method according to claim 1 or 2, characterized in that radially to a sheet guide drum (3) of a sheet printing machine (1), the at least one row of grippers (4) and to each row of grippers (4) Has suction heads (6), at least one laser or inkjet printer (7, 8) is arranged. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Saugköpfe (6) relativ zu den Greifern (4) in Umfangsrichtung auf unterschiedliche Bogenlängen motorisch oder manuell einstellbar sind.Apparatus according to claim 5, characterized in that the suction heads (6) can be adjusted by motor or manually in relation to the grippers (4) in the circumferential direction to different arc lengths. Vorrichtung nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, daß die Saugköpfe (6) zur Straffung der Bogen relativ zur Bogenführungstrommel (3) beweglich ausgebildet sind.Device according to one of claims 5 or 6, characterized in that the suction heads (6) are designed to be movable for tightening the sheets relative to the sheet guide drum (3). Vorrichtung zur Durchführung des Verfahrens nach Anspruch 4, dadurch gekennzeichnet, daß an einer Bogenführungstrommel (3) einer Bogendruckmaschine (1) mit wenigstens einer Reihe von Greifern (4) im Bereich der Übernahme der Bogen auf die Bogenführungstrommel (3) eine Einrichtung (11) zum elektrostatischen Aufladen der Bogenführungstrommel und der Bogen vorgesehen ist und daß im wenigstens ein Laser- oder Tintenstrahldrucker (7, 8) radial zur Bogenführungstrommel (3) angeordnet ist.Device for carrying out the method according to claim 4, characterized in that on a sheet guide drum (3) of a sheet printing machine (1) with at least one row of grippers (4) in the area of the transfer of the sheets onto the sheet guide drum (3), a device (11) is provided for electrostatically charging the sheet guide drum and the sheet and that in at least one laser or inkjet printer (7, 8) is arranged radially to the sheet guide drum (3). Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß im Bogenlauf hinter der Bogenführungstrommel (3) eine Einrichtung (12) zum elektrostatischen Entladen der Bogen vorgesehen ist.Apparatus according to claim 8, characterized in that a device (12) for electrostatically unloading the sheets is provided in the sheet run behind the sheet guide drum (3). Vorrichtung nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, daß der Laser- oder Tintenstrahldrucker (7, 8) im Gehäuse (5) der Bogendruckmaschine (1) mittels Führungen (9) und Rollen (10) parallel zur Achse der Bogenführungstrommel (3) verstellbar angeordnete ist.Device according to one of claims 5 to 9, characterized in that the laser or ink jet printer (7, 8) in the housing (5) of the sheet-fed printing press (1) by means of guides (9) and rollers (10) parallel to the axis of the sheet guide drum (3 ) is adjustable. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß der Abstand des Laser- oder Tintenstrahldruckers (7, 8) von der Bogenführungstrommel (3) auf unterschiedlich dicke Bogen einstellbar ist.Apparatus according to claim 10, characterized in that the distance of the laser or inkjet printer (7, 8) from the sheet guide drum (3) can be adjusted to sheets of different thicknesses. Vorrichtung nach einem der Ansprüche 5 bis 11, dadurch gekennzeichnet, daß die Baugruppe aus Bogenführungstrommel (3) und Laser- oder Tintenstrahldruckern (7, 8) zwischen dem letzten Druckwerk und einem Auslagesystem (2) angeordnet ist.Device according to one of claims 5 to 11, characterized in that the assembly of sheet guide drum (3) and laser or inkjet printers (7, 8) is arranged between the last printing unit and a delivery system (2).
EP96104214A 1995-04-15 1996-03-16 Apparatus for imprinting bar codes on a printed sheet Expired - Lifetime EP0737572B2 (en)

Applications Claiming Priority (2)

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DE19514259 1995-04-15
DE19514259A DE19514259A1 (en) 1995-04-15 1995-04-15 Method for impressing bar codes in printed sheets and device for carrying out the method

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EP0737572A1 true EP0737572A1 (en) 1996-10-16
EP0737572B1 EP0737572B1 (en) 1998-02-18
EP0737572B2 EP0737572B2 (en) 2000-09-13

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JP (1) JP2868723B2 (en)
AT (1) ATE163279T1 (en)
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EP1364809A1 (en) * 2002-05-24 2003-11-26 Kba-Giori S.A. Process and apparatus for providing markings on security papers
US7152528B2 (en) * 2002-07-16 2006-12-26 Ebe Hesterman Digital printing machine
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EP1810826A3 (en) * 2006-01-18 2011-03-09 manroland AG Sheet fed printing press
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WO2010086263A1 (en) * 2009-01-30 2010-08-05 Manroland Ag Sheet-fed printing press
CN101875256A (en) * 2010-06-03 2010-11-03 上海纺印印刷包装有限公司 Coding machine for paper container
CN101875256B (en) * 2010-06-03 2011-11-30 上海纺印印刷包装有限公司 Coding machine for paper container
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Also Published As

Publication number Publication date
JP2868723B2 (en) 1999-03-10
EP0737572B2 (en) 2000-09-13
EP0737572B1 (en) 1998-02-18
DE59600095D1 (en) 1998-03-26
ATE163279T1 (en) 1998-03-15
JPH08300756A (en) 1996-11-19
DE19514259A1 (en) 1996-10-17

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