EP1184170A2 - Device for coating printing ink onto a printing support - Google Patents

Device for coating printing ink onto a printing support Download PDF

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Publication number
EP1184170A2
EP1184170A2 EP01119805A EP01119805A EP1184170A2 EP 1184170 A2 EP1184170 A2 EP 1184170A2 EP 01119805 A EP01119805 A EP 01119805A EP 01119805 A EP01119805 A EP 01119805A EP 1184170 A2 EP1184170 A2 EP 1184170A2
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EP
European Patent Office
Prior art keywords
printing
plate
blanket
operating mode
roller
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Granted
Application number
EP01119805A
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German (de)
French (fr)
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EP1184170B1 (en
EP1184170A3 (en
Inventor
Thomas Walther
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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
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F11/00—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00—Printing processes
    • B41P2200/10—Relief printing
    • B41P2200/12—Flexographic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00—Printing processes
    • B41P2200/20—Lithography

Definitions

  • the invention relates to a device for applying printing ink to a printing substrate, for example on a sheet of paper or cardboard or on one paper web drawn off a roll.
  • a corresponding ink application is achieved in an offset printing machine by in interaction with an inking and dampening unit via a forme cylinder
  • First apply a color application (mirror image) corresponding to the print image onto one Offset or blanket cylinder is applied.
  • the offset or blanket cylinder rolls on a further contact zone on a printing material to be printed and transfers the ink application defined by the forme cylinder to the Printing material.
  • Offset printing machines have, with regard to the respective paper types, achievable high print performance and print quality proven. While processing uncoated types of paper or cardboard, however, exist in particular with high printing speeds the problem of reduced print quality.
  • the invention has for its object a device for applying printing ink to create on a substrate through which the different Properties of the substrate or substrate to be printed Can be taken into account.
  • a device for applying Ink on a substrate with one that rolls on the substrate Roller device and an ink transfer device for transferring printing ink onto the roller device, the roller device in a first operating mode can be operated as an offset cylinder and in a second operating mode Direct printing cylinder is operable.
  • the device according to the invention is suitable in addition to Printing of coated paper types, especially for printing on cardboard and cardboard and in a particularly advantageous manner for printing corrugated cardboard.
  • the printing press saves time switch to the desired operating mode and substrates without paper coating in the direct printing process or substrates with paper coating in the offset process to print on.
  • the when using the offset printing process on substrates This creates a risk of slug formation without paper lines advantageously prevented.
  • the device according to the invention is therefore suitable especially for printing processes for processing low-cost substrates especially packaging materials such as cardboard, especially corrugated cardboard.
  • the roller device In order to operate the device in the first operating mode, the roller device is in advantageously provided with a rubber blanket.
  • the roller device is advantageously with a Pressure plate is provided which has a relief-like surface.
  • the pressure plate can be designed, for example, as a high-pressure plate.
  • the relief-like surface can advantageously be achieved in that the printing plate is formed by a photopolymer plate. Especially for Printing on uncoated corrugated cardboard is preferably as Flexographic printing plate formed.
  • the photopolymer plate has a warp resistant support having.
  • the warp-resistant support is advantageously formed by a metal plate.
  • the warp-resistant carrier can also be made using a rigid film and / or a textile fabric can be formed. It is possible to use the metal plate only in the area Provide pressure zone and the tensile film or the textile fabric above to lead the metal plate into a clamping device.
  • Adjustment device provided for adjusting the position of the direct printing plate in Circumferential direction.
  • This adjusting device advantageously has clamping or Fixing means which are provided in the hybrid roller device for adjustment the position of the direct printing plate relative to the printing plate contact surface of the roller device.
  • clamping or fixing means are preferably designed such that if necessary for fixing a blanket or a direct printing plate are suitable.
  • roller device releasably in the printing unit, so that sleeve-like direct printing or offset printing elements on the roller device can be put on. It is also possible to design the device in such a way that that the roller device can be changed for the respective printing process can.
  • a circumferential register device is provided for setting the Rotational phase position of the roller device relative to the substrate to be printed in the circumferential direction.
  • a side register adjustment device is also provided, for setting the (axial) position of the direct pressure plate transversely to the transport direction of the substrate to be printed.
  • an inking unit and a dampening unit provided the corresponding forme cylinder assigned. Both the inking unit and the dampening unit are preferred can be brought into a passive position, in which this does not apply paint or moisture arrange on the forme cylinder.
  • the forme cylinder and those that can be operated selectively as offset cylinders or direct printing cylinders Rollers are preferably positioned relative to each other in such a way that Direct printing operation of the forme cylinder does not press against the roller device.
  • there can be a sufficient distance between the outer surfaces of the Cylinders can also be achieved by using a printing plate for direct printing the thickness is selected to be at least 0.5 mm less than the thickness a blanket used for offset printing. It is also possible the forme cylinder on the direct printing cylinder during direct printing mode to pass on. This improves the support of the direct printing cylinder reached. It is possible to apply the ink to the direct printing cylinder via the Make form cylinder.
  • the formation of the relief structure on the outer surface of the direct printing plate can be achieved by imaging devices that are integrated into the device are. This makes it possible to use a register device for setting the Dispense with the position of the direct printing plate.
  • the ink to the roller device in the Direct printing mode of operation to perform via a color transfer device, the has a chambered doctor blade arrangement.
  • This color transfer device for applying the printing ink in the second operating mode is preferably designed as a module or insert, the or the against a blanket washing system effective in the first operating mode is interchangeable.
  • FIG. 1 A schematic diagram to explain the structure of a hybrid printing unit of a printing press with a roller device which can be operated selectively as a direct printing roller or a blanket roller for applying printing ink to a printing material.
  • the printing unit shown here forms part of a sheet-fed printing machine and includes an impression cylinder 1 on the outer circumferential surface of a printing material (here not shown) rests.
  • the hybrid roller device is in a first Operating mode operable in which the outer surface of the hybrid roller device carries a rubber blanket 3 and an ink supply defining the print image via a Forme cylinder 4 takes place.
  • the forme cylinder 4 has an illustrated printing plate 8 provided.
  • the printing unit can be operated in an offset printing mode, the supply of printing ink to the printing plate 8 of the forme cylinder 4 via a Inking unit 6 takes place in conjunction with a dampening unit 7.
  • the hybrid roller device 2 is provided with a printing blanket fixing device 9 About which selectively a blanket 3 or a direct printing plate in particular Flexographic printing plate can be clamped onto the hybrid roller device 2.
  • the printing blanket fixing device 9 shown here enables the positioning of a Direct printing plate to achieve a circumferential fit.
  • a first setting option is given by blanket spindles 10, 11. By turning the Blanket clamping spindles 10, 11, the blanket in the circumferential direction of a Roller body 2a of the hybrid roller device 2 can be moved.
  • the one here Achievable register precision is usually especially for corrugated board printing sufficient.
  • a precision registration device 12 In combination with the adjusting device created by the rubber clamping spindles 10, 11 is a precision registration device 12, which is shown hatched here provided over which the tensioned printing blanket in the circumferential direction of the roller body 2a is precisely movable. About this precision registration device 12 is in a small angular range also an angle change as well as over a small one Path range an axial displacement (to achieve a side pass) of the Printing blanket possible. In addition to an axial displacement of the Rubber clamping spindles 10, 11 also by a corresponding axial adjustment of the Hybrid roller device 2 can be achieved.
  • the setting devices mentioned are dispensed with.
  • positioning marks are provided, via which the position of the direct printing blanket during the clamping of the same are checked and corrected if necessary can. It is also possible to have complementary positioning structures on the Form roller body 2a and the direct printing blanket.
  • the ink is supplied to the in accordance with the hybrid roller device 2 configured as a direct printing roller indirectly via an inking unit in connection with a blanket roller.
  • This blanket roller can if necessary by stretching a blanket on the Forme cylinder 4, or by means of a color module that can be selectively brought into ink application, respectively.
  • the application of printing ink to the direct printing blanket can also be done indirectly via a Chamber doctor blade, for example in the dampening system area, or via a converted one and dampening unit loaded with direct printing ink.
  • the chambered doctor blade with anilox or rubber roller is advantageously modular for example, designed as an insert.
  • a paint application module can Change from offset printing mode to direct or flexo printing mode Exchange with a blanket washer in operating position.
  • the direct inking of the direct printing roller is particularly evident in terms of to be largely insensitive to drying of the printing ink as advantageous.
  • printing ink includes Understanding media which are to be applied to a printing material in a defined manner, especially also varnishes, glues and paper lines.
  • the hybrid printing unit according to the invention can advantageously the straight printing unit a sheetfed offset press. Several of these are possible To provide printing units in a printing press.
  • the printing unit according to the invention is also suitable for printing continuous substrates.

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

Abstract

The roller operates in both offset and printing cylinder modes and is driven in the offset mode by a rubber blanket (3) as opposed to the second mode in which the roll acting as cylinder is fitted with an engraved printing plate as photopolymer plate or flexo-gravure plate. The plate is secured by clamp and fixer device (10,11) to position the plate in relation to the cylinder plate mounting surface. The cylinder is positioned in three phases relative to the substrate being printed. A register device and a page setter line-up device (12) adjusts the axial position for correct inking by means of the inker (6) working with the blanket. A doctor blade chamber is addressed to the ink transfer unit which in the second mode is in insert form and here exchangeable for a blanket washer.

Description

Die Erfindung betrifft eine Vorrichtung zum Auftrag von Druckfarbe auf einen Bedruckstoff, beispielsweise auf einen Papier- oder Kartonbogen oder auch auf eine von einer Rolle abgezogene Papierbahn.The invention relates to a device for applying printing ink to a printing substrate, for example on a sheet of paper or cardboard or on one paper web drawn off a roll.

Ein entsprechender Farbauftrag wird bei einer Offset-Druckmaschine erreicht, indem im Zusammenspiel mit einem Farb- und Feuchtwerk über einen Formzylinder zunächst ein dem Druckbild (spiegelbildlich) entsprechender Farbauftrag auf einen Offset- oder Gummituchzylinder aufgebracht wird. Der Offset- oder Gummituchzylinder wälzt an einer weiteren Kontaktzone auf einem zu bedruckenden Bedruckstoff ab und übergibt hierbei den durch den Formzylinder definierten Farbauftrag auf den Bedruckstoff.A corresponding ink application is achieved in an offset printing machine by in interaction with an inking and dampening unit via a forme cylinder First apply a color application (mirror image) corresponding to the print image onto one Offset or blanket cylinder is applied. The offset or blanket cylinder rolls on a further contact zone on a printing material to be printed and transfers the ink application defined by the forme cylinder to the Printing material.

Offsetdruckmaschinen haben sich im Hinblick auf die, mit entsprechenden Papiersorten, erreichbare hohe Druckleistung und Druckqualität bewährt. Bei der Verarbeitung ungestrichener Papier- oder Kartonsorten besteht jedoch insbesondere bei hohen Druckgeschwindigkeiten das Problem verminderter Druckqualität.Offset printing machines have, with regard to the respective paper types, achievable high print performance and print quality proven. While processing uncoated types of paper or cardboard, however, exist in particular with high printing speeds the problem of reduced print quality.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Auftrag von Druckfarbe auf ein Substrat zu schaffen, durch welche mit hoher Flexibilität den unterschiedlichen Eigenschaften des zu bedruckenden Substrats bzw. Bedruckstoffes Rechnung getragen werden kann.The invention has for its object a device for applying printing ink to create on a substrate through which the different Properties of the substrate or substrate to be printed Can be taken into account.

Diese Aufgabe wird erfindungsgemäß gelöst durch eine Vorrichtung zum Auftrag von Druckfarbe auf einen Bedruckstoff mit einer auf dem Bedruckstoff abwälzenden Walzeneinrichtung und einer Farbübergabeeinrichtung zur Übergabe von Druckfarbe auf die Walzeneinrichtung, wobei die Walzeneinrichtung in einem ersten Betriebsmodus als Offset-Zylinder betreibbar ist und in einem zweiten Betriebsmodus als Direkt-Druckzylinder betreibbar ist.This object is achieved according to the invention by a device for applying Ink on a substrate with one that rolls on the substrate Roller device and an ink transfer device for transferring printing ink onto the roller device, the roller device in a first operating mode can be operated as an offset cylinder and in a second operating mode Direct printing cylinder is operable.

Dadurch wird es auf vorteilhafte Weise möglich, das in einem einzelnen Druckwerk zur Anwendung kommende Druckverfahren auf vorteilhafte Weise auf die Oberflächenbeschaffenheit des zu bedruckenden Substrates abzustimmen. Das hiermit erfindungsgemäß geschaffene Hybrid-Druckwerk ermöglicht durch Umrüsten der auf dem Substrat abwälzenden Walzeneinrichtung sowohl Offsetdruckverfahren als auch Direktdruckverfahren beispielsweise Flexodruckverfahren.This advantageously makes it possible to do this in a single printing unit printing processes used in an advantageous manner on the surface quality of the substrate to be printed. The hereby Hybrid printing unit created according to the invention made possible by converting the both roller printing process and roller device rolling on the substrate also direct printing processes, for example flexographic printing processes.

Es ist in vorteilhafter Weise möglich, das in dem jeweiligen Druckwerk oder Druckmodul zur Anwendung gelangende Druckverfahren auf die verwendete Druckfarbe oder Lack, sowie auf die Vorbehandlung des Bedruckstoffes, abzustimmen. Bei der Kombination mehrerer Druckwerke ist es möglich, Direktdruck- und Offsetdruckverfahren zu kombinieren. Die erfindungsgemäße Vorrichtung eignet sich neben dem Bedrucken von gestrichenen Papiersorten insbesondere zum Bedrucken von Karton und Pappe und in besonders vorteilhafter Weise auch zum Bedrucken von Wellpappe.It is advantageously possible that in the respective printing unit or printing module printing processes used on the printing ink used or varnish, as well as the pretreatment of the substrate. In the Combining several printing units, it is possible to use direct printing and offset printing processes to combine. The device according to the invention is suitable in addition to Printing of coated paper types, especially for printing on cardboard and cardboard and in a particularly advantageous manner for printing corrugated cardboard.

In vorteilhafter Weise wir es möglich, bedarfsweise die Druckmaschine zeitsparend auf den gewünschten Betriebsmodus umzustellen und Bedruckstoffe ohne Papierstrich im Direktdruckverfahren oder Bedruckstoffe mit Papierstrich im Offsetverfahren zu bedrucken. Der bei Anwendung des Offsetdruckverfahrens auf Bedruckstoffe ohne Papierstrich bestehenden Gefahr der Bildung von Butzen wird hierdurch auf vorteilhafte Weise vorgebeugt. Die erfindungsgemäße Vorrichtung eignet sich daher insbesondere auch für Druckverfahren zur Verarbeitung von Low-Cost Substraten insbesondere Verpackungsmaterialien wie Pappe insbesondere Wellpappe.In an advantageous manner, it is possible, if necessary, the printing press saves time switch to the desired operating mode and substrates without paper coating in the direct printing process or substrates with paper coating in the offset process to print on. The when using the offset printing process on substrates This creates a risk of slug formation without paper lines advantageously prevented. The device according to the invention is therefore suitable especially for printing processes for processing low-cost substrates especially packaging materials such as cardboard, especially corrugated cardboard.

Zum Betrieb der Vorrichtung im ersten Betriebsmodus ist die Walzeneinrichtung in vorteilhafter Weise mit einem Gummituch versehen. Zum Betrieb der Vorrichtung im Direktdruckmodus wird die Walzeneinrichtung in vorteilhafter Weise mit einer Druckplatte versehen ist die eine reliefartige Oberfläche aufweist. Die Druckplatte kann hierzu beispielsweise als Hochdruckplatte ausgebildet sein.In order to operate the device in the first operating mode, the roller device is in advantageously provided with a rubber blanket. To operate the device in Direct printing mode, the roller device is advantageously with a Pressure plate is provided which has a relief-like surface. The pressure plate can be designed, for example, as a high-pressure plate.

Die reliefartige Oberfläche kann auf vorteilhafte Weise dadurch erreicht werden, daß die Druckplatte durch eine Photopolymerplatte gebildet ist. Insbesondere zum Bedrucken von ungestrichener Wellpappe ist die Druckplatte vorzugsweise als Flexodruckplatte ausgebildet. The relief-like surface can advantageously be achieved in that the printing plate is formed by a photopolymer plate. Especially for Printing on uncoated corrugated cardboard is preferably as Flexographic printing plate formed.

Eine besonders präzise Ausrichtung der Druckplatte sowohl in Umfangsrichtung als auch in Axialrichtung wird gemäß einer besonders bevorzugten Ausführungsform der Erfindung dadurch erreicht, daß die Photopolymerplatte einen verzugssteifen Träger aufweist. Der verzugssteife Träger ist mit Vorteil durch eine Metallplatte gebildet. Alternativ hierzu - oder in vorteilhafter Weise auch in Kombination mit dieser Maßnahme, kann der verzugssteife Träger auch durch eine zugsteife Folie und/oder ein Textilgewebe gebildet sein. Es ist möglich, die Metallplatte nur im Bereich der Druckzone vorzusehen und die zugsteife Folie oder das genannte Textilgewebe über die Metallplatte hinaus in eine Spanneinrichtung hinein zu führen.A particularly precise alignment of the printing plate both in the circumferential direction and also in the axial direction, according to a particularly preferred embodiment Invention achieved in that the photopolymer plate has a warp resistant support having. The warp-resistant support is advantageously formed by a metal plate. Alternatively to this - or advantageously in combination with this Measure, the warp-resistant carrier can also be made using a rigid film and / or a textile fabric can be formed. It is possible to use the metal plate only in the area Provide pressure zone and the tensile film or the textile fabric above to lead the metal plate into a clamping device.

Gemäß einer besonders bevorzugten Ausführungsform der Erfindung ist eine Einstellvorrichtung vorgesehen, zur Einstellung der Position der Direkt-Druckplatte in Umfangsrichtung. Diese Einstellvorrichtung weist in vorteilhafter Weise Spann- oder Fixiermittel auf die in der Hybrid-Walzeneinrichtung vorgesehen sind, zur Einstellung der Position der Direkt-Druckplatte relativ zur Druckplattenauflagefläche der Walzeneinrichtung. Diese Spann- oder Fixiermittel sind vorzugsweise derart ausgebildet, daß diese bedarfsweise zur Fixierung eines Gummituches oder einer Direktdruckplatte geeignet sind.According to a particularly preferred embodiment of the invention Adjustment device provided for adjusting the position of the direct printing plate in Circumferential direction. This adjusting device advantageously has clamping or Fixing means which are provided in the hybrid roller device for adjustment the position of the direct printing plate relative to the printing plate contact surface of the roller device. These clamping or fixing means are preferably designed such that if necessary for fixing a blanket or a direct printing plate are suitable.

Es ist auch möglich die Walzeneinrichtung lösbar in dem Druckwerk anzuordnen, so daß hülsenartige Direktdruck- oder Offsetdruckelemente auf die Walzeneinrichtung aufgesetzt werden können. Es ist auch möglich, die Vorrichtung derart auszubilden, daß die Walzeneinrichtung für das jeweilige Druckverfahren gewechselt werden kann.It is also possible to arrange the roller device releasably in the printing unit, so that sleeve-like direct printing or offset printing elements on the roller device can be put on. It is also possible to design the device in such a way that that the roller device can be changed for the respective printing process can.

Insbesondere für die Durchführung eines Mehrfarbendruckverfahrens ist in vorteilhafter Weise eine Umfangs-Registereinrichtung vorgesehen ist, zur Einstellung der Drehphasenposition der Walzeneinrichtung relativ zu dem zu bedruckenden Substrat in Umfangsrichtung. In vorteilhafter Weise in Kombination mit dieser Umfangs-Registereinrichtung ist weiterhin eine Seitenpasser-Einstelleinrichtung vorgesehen, zur Einstellung der (Axial-) Position der Direkt-Druckplatte quer zur Transportrichtung des zu bedruckenden Substrates. It is particularly advantageous to carry out a multicolor printing process A circumferential register device is provided for setting the Rotational phase position of the roller device relative to the substrate to be printed in the circumferential direction. In an advantageous manner in combination with this circumferential register device a side register adjustment device is also provided, for setting the (axial) position of the direct pressure plate transversely to the transport direction of the substrate to be printed.

Zum Betrieb der Vorrichtung im ersten (Offset-) Betriebsmodus sind vorzugsweise ein Farbwerk und ein Feuchtwerk vorgesehen die dem entsprechenden Formzylinder zugeordnet sind. Vorzugsweise sind sowohl das Farbwerk, als auch das Feuchtwerk in eine Passivstellung bringbar, in welcher diese keinen Farb- oder Feuchtigkeitsauftrag auf den Formzylinder veranlassen.For operating the device in the first (offset) operating mode are preferred an inking unit and a dampening unit provided the corresponding forme cylinder assigned. Both the inking unit and the dampening unit are preferred can be brought into a passive position, in which this does not apply paint or moisture arrange on the forme cylinder.

Der Formzylinder und die selektiv als Offsetzylinder oder Direktdruckzylinder betreibbare Walzeneinrichtung sind vorzugsweise derart zueinander positionierbar, daß im Direktdruckbetrieb der Formzylinder nicht gegen die Walzeneinrichtung drängt. Alternativ zu einer Veränderung der Position der Lagerungen der beiden Zylinder zueinander, kann ein ausreichender Abstand zwischen den Außenflächen der Zylinder auch erreicht werden, indem für den Direktdruckmodus eine Druckplatte verwendet wird deren Dicke wenigstens 0,5mm geringer gewählt ist als die Dicke eines für den Offsetdruckbetrieb verwendeten Gummituches. Es ist auch möglich den Formzylinder während des Direktdruckmodus auf dem Direktdruckzylinder abwälzen zu lassen. Hierdurch wird eine verbesserte Abstützung des Direktdruckzylinders erreicht. Es ist möglich, den Farbauftrag auf den Direktdruckzylinder über den Formzylinder vorzunehmen. Hierdurch wird es möglich Eigenschaften des Direktdruckverfahrens mit Eigenschaften des Offsetdruckverfahrens zu kombinieren. Es ist möglich den für den Offset-Betriebsmodus vorgesehenen Formzylinder derart zu Bebildern oder zu Rastern, daß der Auftrag der Druckfarbe auf den Direktdruckzylinder über den Formzylinder und ggf. dessen Farbwerke erfolgen kann.The forme cylinder and those that can be operated selectively as offset cylinders or direct printing cylinders Rollers are preferably positioned relative to each other in such a way that Direct printing operation of the forme cylinder does not press against the roller device. As an alternative to changing the position of the bearings of the two cylinders to each other, there can be a sufficient distance between the outer surfaces of the Cylinders can also be achieved by using a printing plate for direct printing the thickness is selected to be at least 0.5 mm less than the thickness a blanket used for offset printing. It is also possible the forme cylinder on the direct printing cylinder during direct printing mode to pass on. This improves the support of the direct printing cylinder reached. It is possible to apply the ink to the direct printing cylinder via the Make form cylinder. This makes properties of the direct printing process possible to combine with properties of the offset printing process. It is possible in this way for the forme cylinder provided for the offset operating mode Illustrate or grid that the application of the printing ink on the direct printing cylinder can take place via the forme cylinder and, if necessary, its inking units.

Die Ausbildung der Reliefstruktur auf der Außenfläche der Direktdruckplatte kann durch Bebilderungseinrichtungen erreicht werden, die in die Vorrichtung integriert sind. Hierbei wird es möglich auf eine Registereinrichtung zur Einstellung der Position der Direktdruckplatte zu verzichten.The formation of the relief structure on the outer surface of the direct printing plate can be achieved by imaging devices that are integrated into the device are. This makes it possible to use a register device for setting the Dispense with the position of the direct printing plate.

Alternativ hierzu ist es gemäß einer besonders bevorzugten Ausführungsform der Erfindung auch möglich, den Auftrag der Druckfarbe auf die Walzeneinrichtung im Direktdruck-Betriebsmodus über eine Farbübergabeeinrichtung vorzunehmen, die eine Kammerrakelanordnung aufweist. Alternatively, according to a particularly preferred embodiment, it is Invention also possible to apply the ink to the roller device in the Direct printing mode of operation to perform via a color transfer device, the has a chambered doctor blade arrangement.

Diese Farbübergabeinrichtung zum Auftrag der Druckfarbe im zweiten Betriebsmodus, ist vorzugsweise als Modul oder Einschub ausgebildet, das bzw. der gegen eine im ersten Betriebsmodus wirksame Gummituchwaschanlage austauschbar ist.This color transfer device for applying the printing ink in the second operating mode, is preferably designed as a module or insert, the or the against a blanket washing system effective in the first operating mode is interchangeable.

Weitere Einzelheiten und Merkmale ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführurigsbeispieles in Verbindung mit der Zeichnung. Die einzige Figur zeigt hierbei:
   Eine Prinzipskizze zur Erläuterung des Aufbaues eines Hybrid-Druckwerkes einer Druckmaschine mit einer selektiv als Direktdruckwalze oder Gummituchwalze betreibbaren Walzeneinrichtung zum Auftrag von Druckfarbe auf einen Bedruckstoff. Further details and features emerge from the following description of a preferred exemplary embodiment in conjunction with the drawing. The only figure shows:
A schematic diagram to explain the structure of a hybrid printing unit of a printing press with a roller device which can be operated selectively as a direct printing roller or a blanket roller for applying printing ink to a printing material.

Das hier dargestellte Druckwerk bildet Teil einer Bogendruckmaschine und umfaßt einen Gegendruckzylinder 1 auf dessen Außenumfangsfläche ein Bedruckstoff (hier nicht dargestellt) aufliegt.The printing unit shown here forms part of a sheet-fed printing machine and includes an impression cylinder 1 on the outer circumferential surface of a printing material (here not shown) rests.

Auf dem, auf dem Gegendruckzylinder 1 aufliegenden Bedruckstoff wälzt eine Hybridwalzeneinrichtung 2 ab. Die Hybridwalzeneinrichtung ist in einem ersten Betriebsmodus betreibbar in welchem die Außenfläche der Hybridwalzeneinrichtung ein Gummituch 3 trägt und eine das Druckbild festlegende Farbzufuhr über einen Formzylinder 4 erfolgt. Der Formzylinder 4 ist hierzu mit einer bebilderten Druckplatte 8 versehen.One rolls on the substrate lying on the impression cylinder 1 Hybrid roller device 2 from. The hybrid roller device is in a first Operating mode operable in which the outer surface of the hybrid roller device carries a rubber blanket 3 and an ink supply defining the print image via a Forme cylinder 4 takes place. For this purpose, the forme cylinder 4 has an illustrated printing plate 8 provided.

In dieser Konfiguration ist das Druckwerk in einem Offsetdruckmodus betreibbar, wobei die Zufuhr von Druckfarbe zu der Druckplatte 8 des Formzylinders 4 über ein Farbwerk 6 im Zusammenspiel mit einem Feuchtwerk 7 erfolgt.In this configuration, the printing unit can be operated in an offset printing mode, the supply of printing ink to the printing plate 8 of the forme cylinder 4 via a Inking unit 6 takes place in conjunction with a dampening unit 7.

Die Hybridwalzeneinrichtung 2 ist mit einer Drucktuch-Fixiereinrichtung 9 versehen über welche selektiv ein Gummituch 3 oder eine Direktdruckplatte insbesondere Flexodruckplatte auf die Hybridwalzeneinrichtung 2 aufgespannt werden kann. Die hier dargestellte Drucktuch-Fixiereinrichtung 9 ermöglicht die Positionierung einer Direktdruckplatte zur Erzielung eines Umfangspassers. Eine erste Einstellmöglichkeit ist durch Drucktuchspannspindeln 10, 11 gegeben. Durch gleichsinniges Drehen der Drucktuchspannspindeln 10, 11 kann das Drucktuch in Umfangsrichtung eines Walzenkörpers 2a der Hybridwalzeneinrichtung 2 verschoben werden. Die hierbei erreichbare Passerpräzision ist insbesondere für den Wellpappedruck im Regelfall ausreichend.The hybrid roller device 2 is provided with a printing blanket fixing device 9 About which selectively a blanket 3 or a direct printing plate in particular Flexographic printing plate can be clamped onto the hybrid roller device 2. The printing blanket fixing device 9 shown here enables the positioning of a Direct printing plate to achieve a circumferential fit. A first setting option is given by blanket spindles 10, 11. By turning the Blanket clamping spindles 10, 11, the blanket in the circumferential direction of a Roller body 2a of the hybrid roller device 2 can be moved. The one here Achievable register precision is usually especially for corrugated board printing sufficient.

In Kombination mit der durch die Gummispannspindeln 10, 11 geschaffenen Einstelleinrichtung ist eine hier schraffiert angedeutete, Präzisionspassereinrichtung 12 vorgesehen über welche das gespannte Drucktuch in Umfangsrichtung des Walzenkörpers 2a präzise bewegbar ist. Über diese Präzisionspassereinrichtung 12 ist in einem kleinen Winkelbereich auch eine Winkeländerung sowie über einen kleinen Wegbereich eine axiale Verschiebung (zur Erzielung eines Seitenpassers) des Drucktuches möglich. Der Seitenpasser kann neben einem axialen Verschieben der Gummispannspindeln 10, 11 auch durch eine entsprechende axiale Verstellung der Hybridwalzeneinrichtung 2 erreicht werden.In combination with the adjusting device created by the rubber clamping spindles 10, 11 is a precision registration device 12, which is shown hatched here provided over which the tensioned printing blanket in the circumferential direction of the roller body 2a is precisely movable. About this precision registration device 12 is in a small angular range also an angle change as well as over a small one Path range an axial displacement (to achieve a side pass) of the Printing blanket possible. In addition to an axial displacement of the Rubber clamping spindles 10, 11 also by a corresponding axial adjustment of the Hybrid roller device 2 can be achieved.

Bei ausreichend präziser Aufspannung des Direktdrucktuches auf die Hybridwalzeneinrichtung 2, oder auch bei geringeren Passeranforderungen, kann u.U. auch auf die genannten Einstelleinrichtungen verzichtet werden. Im letzteren Fall sind vorzugsweise Positioniermarken vorgesehen, über welche die Position des Direktdrucktuches bei der Aufspannung desselben überprüft und ggf. korrigiert werden kann. Es ist auch möglich zueinander komplementäre Positionierstrukturen an dem Walzenkörper 2a und dem Direktdrucktuch auszubilden.When the direct printing blanket is clamped onto the hybrid roller device with sufficient precision 2, or even with lower register requirements, may also the setting devices mentioned are dispensed with. In the latter case preferably positioning marks are provided, via which the position of the direct printing blanket during the clamping of the same are checked and corrected if necessary can. It is also possible to have complementary positioning structures on the Form roller body 2a and the direct printing blanket.

Für den Betrieb der Vorrichtung im Direktdruckmodus erfolgt die Farbzufuhr zu der entsprechend als Direktdruckwalze konfigurierten Hybridwalzeneinrichtung 2 vorzugsweise indirekt über ein Farbwerk in Verbindung mit einer Gummituchwalze. Diese Gummituchwalze kann ggf. durch Aufspannen eines Gummituches auf den Formzylinder 4, oder durch ein selektiv in Farbauftragsstellung bringbares Farbmodul, erfolgen.For the operation of the device in direct printing mode, the ink is supplied to the in accordance with the hybrid roller device 2 configured as a direct printing roller indirectly via an inking unit in connection with a blanket roller. This blanket roller can if necessary by stretching a blanket on the Forme cylinder 4, or by means of a color module that can be selectively brought into ink application, respectively.

Der Auftrag von Druckfarbe auf das Direktdrucktuch kann auch indirekt über ein Kammerrakel beispielsweise im Feuchtwerksbereich, oder über ein umgerüstetes und mit Direktdruckfarbe beschicktes Feuchtwerk erfolgen. The application of printing ink to the direct printing blanket can also be done indirectly via a Chamber doctor blade, for example in the dampening system area, or via a converted one and dampening unit loaded with direct printing ink.

Es ist auch möglich, den Farbauftrag auf das Direktdrucktuch über ein Kammerrakel vorzunehmen, das gegen das Gummituch gestellt ist.It is also possible to apply the ink to the direct printing blanket using a chamber doctor blade that is placed against the rubber blanket.

Die beschriebene Variante des indirekten Auftrags der Druckfarbe auf das vorzugsweise als Photopolymerplatte ausgebildete Direktdrucktuch ist hier durch einen in Strichlinien abschnittsweise dargestellten Gummi- oder Rasterzylinder S, angedeutet.The described variant of the indirect application of the printing ink on the preferably Direct printing blanket designed as a photopolymer plate is here by an in Dashed lines shown in sections rubber or screen cylinder S, indicated.

In vorteilhafter Weise ist das Kammerrakel mit Raster- oder Gummiwalze modulartig beispielsweise als Einschub ausgebildet. Ein derartiges Farbauftragsmodul kann bei Wechsel vom Offsetdruckmodus in den Direkt- oder Flexodruckmodus durch Austausch mit einer Gummituchwaschanlage in Betriebsstellung gebracht werden. Die direkte Einfärbung der Direktdruckwalze erweist sich insbesondere im Hinblick auf eine weitgehende Unempfindlichkeit gegen Trocknen der Druckfarbe als vorteilhaft.The chambered doctor blade with anilox or rubber roller is advantageously modular for example, designed as an insert. Such a paint application module can Change from offset printing mode to direct or flexo printing mode Exchange with a blanket washer in operating position. The direct inking of the direct printing roller is particularly evident in terms of to be largely insensitive to drying of the printing ink as advantageous.

Unter dem Begriff Druckfarbe sind im vorliegenden Fall sämtl. Medien zu verstehen, die druckbildartig, definiert auf einen Bedruckstoff aufgetragen werden sollen, insbesondere auch Lacke, Leime und Papierstriche.In the present case, the term printing ink includes Understanding media which are to be applied to a printing material in a defined manner, especially also varnishes, glues and paper lines.

Das erfindungsgemäße Hybriddruckwerk kann in vorteilhafter Weise das Schöndruckwerk einer Bogenoffsetdruckmaschine bilden. Es ist möglich mehrere derartiger Druckwerke in einer Druckmaschine vorzusehen. Das erfindungsgemäße Druckwerk eignet sich auch zum Bedrucken durchgängiger Bedruckstoffe.The hybrid printing unit according to the invention can advantageously the straight printing unit a sheetfed offset press. Several of these are possible To provide printing units in a printing press. The printing unit according to the invention is also suitable for printing continuous substrates.

Claims (15)

Vorrichtung zum Auftrag von Druckfarbe auf einen Bedruckstoff, mit einer auf dem Bedruckstoff abwälzenden Walzeneinrichtung und einer Farbübergabeeinrichtung zur Übergabe von Druckfarbe auf die Walzeneinrichtung, wobei die Walzeneinrichtung in einem ersten Betriebsmodus als Offset-Zylinder und in einem zweiten Betriebsmodus als Direkt-Druckzylinder betreibbar ist.Device for applying printing ink to a printing material, with one on the Rolling device which rolls the printing material and an ink transfer device for transferring printing ink to the roller device, the roller device in a first operating mode as an offset cylinder and in a second Operating mode can be operated as a direct pressure cylinder. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zum Betrieb der Walzeneinrichtung im ersten Betriebsmodus diese mit einem Gummituch versehen ist.Apparatus according to claim 1, characterized in that for operating the roller device in the first operating mode, it is provided with a rubber blanket. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zum Betrieb der Walzeneinrichtung im zweiten Betriebsmodus diese mit einer Druckplatte versehen ist die eine reliefartig tekturierte Oberfläche aufweist.Apparatus according to claim 1, characterized in that for the operation of the roller device in the second operating mode, the latter is provided with a pressure plate which has a relief-like surface. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, das die Druckplatte als Hochdruckplatte ausgebildet ist.Apparatus according to claim 3, characterized in that the pressure plate is designed as a high pressure plate. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, die Druckplatte durch eine Photopolymerplatte gebildet ist.Apparatus according to claim 3 or 4, characterized in that the printing plate is formed by a photopolymer plate. Vorrichtung nach wenigstens einem der Ansprüche 3 bis 4, dadurch gekennzeichnet, daß die Druckplatte als Flexodruckplatte ausgebildet ist.Device according to at least one of claims 3 to 4, characterized in that the printing plate is designed as a flexographic printing plate. Vorrichtung nach wenigstens einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, daß die Photopolymerplatte einen verzugssteifen Träger aufweist.Device according to at least one of claims 5 or 6, characterized in that the photopolymer plate has a warp-resistant support. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß der verzugssteife Träger durch eine Metallplatte und/oder eine zugsteife Folie und/oder ein Textilgewebe gebildet ist. Apparatus according to claim 7, characterized in that the warp-resistant carrier is formed by a metal plate and / or a tensile film and / or a textile fabric. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß eine Einstellvorrichtung vorgesehen ist, zur Einstellung der Position der Direkt-Druckplatte in Umfangsrichtung.Device according to at least one of claims 1 to 8, characterized in that an adjusting device is provided for adjusting the position of the direct pressure plate in the circumferential direction. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Einstellvorrichtung Spann- oder Fixiermittel aufweist die in der Walzeneinrichtung vorgesehen sind, zur Einstellung der Position der Direkt-Druckplatte relativ zur Druckplattenauflagefläche der Walzeneinrichtung.Apparatus according to claim 9, characterized in that the adjusting device has tensioning or fixing means which are provided in the roller device for adjusting the position of the direct pressure plate relative to the pressure plate contact surface of the roller device. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß eine Umfangs-Registereinrichtung vorgesehen ist, zur Einstellung der Drehphasenposition der Walzeneinrichtung relativ zu dem zu bedruckenden Substrat.Apparatus according to claim 9, characterized in that a circumferential register device is provided for adjusting the rotational phase position of the roller device relative to the substrate to be printed. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß eine Seitenpasser-Einstelleinrichtung vorgesehen ist, zur Einstellung der Axialposition der Direkt-Druckplatte relativ zu dem zu bedruckenden Substrat.Device according to at least one of claims 1 to 11, characterized in that a side register adjustment device is provided for adjusting the axial position of the direct printing plate relative to the substrate to be printed. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die Farbübergabeeinrichtung ein mit einem Gummituch zusammenwirkendes Farbwerk aufweist.Device according to at least one of claims 1 to 12, characterized in that the ink transfer device has an inking unit which interacts with a rubber blanket. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die Farbübergabeeinrichtung eine Kammerrakelanordnung aufweist.Device according to at least one of claims 1 to 12, characterized in that the ink transfer device has a chambered doctor blade arrangement. Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, daß die Farbübergabeinrichtung zum Auftrag der Druckfarbe im zweiten Betriebsmodus, als Einschub ausgebildet ist, der gegen eine im ersten Betriebsmodus wirksame Gummituchwaschanlage austauschbar ist.Apparatus according to claim 14, characterized in that the ink transfer device for applying the printing ink in the second operating mode is designed as an insert which can be exchanged for a blanket washing system which is effective in the first operating mode.
EP01119805A 2000-08-30 2001-08-16 Device for coating printing ink onto a printing support Expired - Lifetime EP1184170B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10042365A DE10042365A1 (en) 2000-08-30 2000-08-30 Device for applying printing ink to a printing material
DE10042365 2000-08-30

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EP1184170A2 true EP1184170A2 (en) 2002-03-06
EP1184170A3 EP1184170A3 (en) 2003-01-29
EP1184170B1 EP1184170B1 (en) 2007-11-07

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AT (1) ATE377507T1 (en)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2604430A3 (en) * 2011-12-16 2016-06-01 Heidelberger Druckmaschinen AG Flexographic printing process

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Publication number Priority date Publication date Assignee Title
DE3116505A1 (en) * 1981-04-25 1982-11-18 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach "ROTARY PRINTING MACHINE"
CH657313A5 (en) * 1981-08-06 1986-08-29 Roland Man Druckmasch Method for operating a web-fed rotary press
EP0471874A1 (en) * 1990-08-23 1992-02-26 Ferd. Rüesch AG. Printing and inking unit for several printing methods
US5630363A (en) * 1995-08-14 1997-05-20 Williamson Printing Corporation Combined lithographic/flexographic printing apparatus and process
EP0864421A1 (en) * 1997-03-13 1998-09-16 Multi Print Systems B.V. Printing machine with exchangeable ink application means
EP0884175A2 (en) * 1997-06-04 1998-12-16 Aurelia Offsett S.p.A. Flexographic printing apparatus for application to offset printing units

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116505A1 (en) * 1981-04-25 1982-11-18 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach "ROTARY PRINTING MACHINE"
CH657313A5 (en) * 1981-08-06 1986-08-29 Roland Man Druckmasch Method for operating a web-fed rotary press
EP0471874A1 (en) * 1990-08-23 1992-02-26 Ferd. Rüesch AG. Printing and inking unit for several printing methods
US5630363A (en) * 1995-08-14 1997-05-20 Williamson Printing Corporation Combined lithographic/flexographic printing apparatus and process
EP0864421A1 (en) * 1997-03-13 1998-09-16 Multi Print Systems B.V. Printing machine with exchangeable ink application means
EP0884175A2 (en) * 1997-06-04 1998-12-16 Aurelia Offsett S.p.A. Flexographic printing apparatus for application to offset printing units

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2604430A3 (en) * 2011-12-16 2016-06-01 Heidelberger Druckmaschinen AG Flexographic printing process

Also Published As

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DE10042365A1 (en) 2002-03-14
EP1184170B1 (en) 2007-11-07
DE50113222D1 (en) 2007-12-20
ATE377507T1 (en) 2007-11-15
EP1184170A3 (en) 2003-01-29

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