EP1375142B1 - Rotary printing machine with a coating unit and procedure for coating a sheet conveying cylinder - Google Patents

Rotary printing machine with a coating unit and procedure for coating a sheet conveying cylinder Download PDF

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Publication number
EP1375142B1
EP1375142B1 EP20030008408 EP03008408A EP1375142B1 EP 1375142 B1 EP1375142 B1 EP 1375142B1 EP 20030008408 EP20030008408 EP 20030008408 EP 03008408 A EP03008408 A EP 03008408A EP 1375142 B1 EP1375142 B1 EP 1375142B1
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EP
European Patent Office
Prior art keywords
sheet
printing machine
coating
coating liquid
machine according
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EP20030008408
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German (de)
French (fr)
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EP1375142A2 (en
EP1375142A3 (en
Inventor
Arndt Jentzsch
Roland Kühn
Olaf Schinkel
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Koenig and Bauer AG
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Koenig and Bauer AG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41NPRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00Preparing for use and conserving printing surfaces
    • B41N3/006Cleaning, washing, rinsing or reclaiming of printing formes other than intaglio formes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F22/00Means preventing smudging of machine parts or printed articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F35/00Cleaning arrangements or devices
    • B41F35/007Cleaning arrangements or devices for supports of workpieces

Definitions

  • the present invention relates to a sheet-fed rotary printing press with printing units for the multi-color printing and at least one coating unit according to the The preamble of claim 1 and a method for initial or repeated Coating of sheet-guiding cylinders in printing machines according to the preamble of Claim 19.
  • the lateral surfaces of the sheet-guiding cylinders in printing presses come into contact with printed sheets during the printing process.
  • the risk of contamination by printing ink exists in particular in the production of printed on both sides sheet. These are, after the printing process has been completed on the recto printing side, turned and fed to the subsequently arranged printing units, wherein the already printed side of the printed sheet of the lateral surface of the sheet-guiding cylinder faces. In the contact zone, printing ink can build up on the sheet-guiding cylinders and deposit on the following printed sheet, which leads to quality losses. Due to the continued contact with the printing sheets, the lateral surfaces of the sheet-guiding cylinders are also worn, which also affects the print quality.
  • the deposition of color and the color structure be avoided on the cylinder jacket by applying a layer of water.
  • the Water acts as a release agent.
  • To produce the water layer is the pressure cylinder jacket specifically supplied with steam-enriched air.
  • DE 43 20 069 discloses a method and an apparatus for repairing cylinders of printing machines by thermal spray coating.
  • the device is in the Printing machine installed when the surface of the relevant cylinder is worn out and is in need of repair. After removing a part of the cylinder jacket this is blasted, heated and thermally spray coated, followed by the smoothing and sealing of the applied layer adjoins.
  • the coating of the cylinder proves to be expensive. Due to the process-related high process temperatures in the thermal Coating results in additional hazards and high stress on the other machine components.
  • DE-A-19 909 688 discloses a Bogerotationsdruck machine with pressure values for the Feature color printing and a washing device comprising a container for receiving a medium and a Having applicator, and is associated with a sheet-guiding cylinder.
  • the invention is based on the object, while avoiding the aforementioned disadvantages a sheet-fed rotary printing press with printing units for multi-color printing and a method to create for the first or repeated coating, which is a permanent Ensure protection for bow-guiding cylinders against contamination with printing ink.
  • the present invention has the advantage that very good ink-repellent and / or wear-inhibiting properties can be produced on the mantle surfaces of the sheet-guiding cylinders of a printing press and can be obtained over virtually any desired length of time.
  • a coating unit is assigned to the sheet-guiding cylinders, in particular the cylinders coming into contact with a printed sheet side, comprising a coating device with which a coating liquid to be fixed by drying can be applied to the surface of the sheet-guiding cylinder.
  • the layer produced in this way is subject to wear, it can easily be regenerated as often as desired in the printing press. The replacement of worn elevators or the time-consuming re-stratification of the cylinders by thermal spraying is eliminated.
  • the present invention is particularly suitable for use in sheet-fed rotary printing presses with turning device, which can print the sheet in perfecting, but also finds application in pure straight printing presses.
  • the regeneration of the properties can be performed as an automated process during a printing pause, which requires no manual activities, in particular no installation work to change lifts.
  • Another embodiment of the invention provides to arrange a known washing device as a coating unit, which is optionally used for applying the coating liquid or for washing the cylinder surface.
  • the washing device can be assigned to one container each for receiving the coating liquid and another container for receiving a cleaning liquid.
  • the use of a container receptacle of the coating unit can optionally be assigned to a coating liquid or a container containing cleaning liquid.
  • the coating liquid is easy to handle and is in liquid form at room temperature. It essentially consists of inorganic nanoparticles modified with organic additives, wherein the Nanoparticles dissolved in aqueous, alcoholic or mixed solvents are. This makes it chemically resistant, which makes storage easier.
  • the layer applied to the sheet-guiding cylinders may depend on the selection the nanoparticles designed as a color-repellent and / or wear-inhibiting layer become.
  • the fixation of the layer is done in the simplest way by drying or irradiation with UV light.
  • the applicator is a drying device assigned, accelerated by the fixation of the coating liquid can be.
  • the single drawing shows a schematic representation of the side view of a printing press with coating units associated with the sheet-guiding cylinders.
  • the sheet-fed printing machine has a feed table 13 and a feed drum 14, with which individual sheets are fed to the first, several printing units 1 arranged one behind the other.
  • Each of the printing units 1 comprises a sheet-guiding cylinder designed as an impression cylinder 5, which is in contact with a blanket cylinder 2 to which a plate cylinder 3 is assigned.
  • a sheet-guiding cylinder designed as an impression cylinder 5, which is in contact with a blanket cylinder 2 to which a plate cylinder 3 is assigned.
  • For transporting the sheet between the printing units 1 each designed as a transfer drum 4 sheet-guiding cylinder is arranged, it does not depend on the number of transfer drums 4 or sheet-guiding cylinder for the application of the invention and the invention is equally applicable to sheet-fed presses, between their printing units 1 three transfer drums 4 are arranged. All sheet-guiding cylinders are equipped in a known manner with gripper systems.
  • One or more of the transfer drums 4 can also be designed as turning drums.
  • the second transfer drum 4 is a turning drum.
  • All counter-pressure cylinders 5 of the printing machine is assigned a coating unit 6.1, 6.2.
  • the coating units 8 correspond in their basic structure to known washing devices.
  • the coating unit 6.2 consists of a container 7, which serves to receive the coating liquid 8, an applicator 11 and a circumferentially driven roller 9.
  • the applicator 11 is designed in the form of an extending over the width of the sheet-guiding cylinder nozzle row, with the pressurized Coating liquid 8 is applied to the lateral surface of the impression cylinder 5.
  • the roller 9 distributes the applied coating liquid 8 into a uniformly thick layer.
  • a soft elastic coating or may be formed as a brush roller.
  • a circumferentially driven cloth 10 is provided instead of the roller 9.
  • the application of the coating liquid 8 takes place with an applicator, not shown, which sprays this coating liquid 8 onto the cloth 10. After spraying the coating liquid 8, it is transferred from the cloth 10, which is in contact with the lateral surface of the sheet-guiding cylinder, to the sheet-guiding cylinder.
  • the thickness of the applied layer can be in all embodiments of the coating unit 6.1, 6.2 control by setting the process parameters.
  • This can be a sensor for Detecting the layer thickness may be provided, which cooperates with a controller, the the applicator 11 and the movement of the roller 9 and / or the cloth 10 controls.
  • the coating units 6.1, 6.2 may be fixed to a single or optionally several be assigned to different sheet-guiding cylinder.
  • the considered in sheet travel direction first, working with a soft-elastic roller 9 coating unit 6.2 is by way of example for a fixedly arranged coating unit 6.2.
  • the other coating units 6.1, 6.2 can optionally be a counter-pressure cylinder 5 or a sheet guiding drum be assigned. This is considered in the sheet running direction second, with a soft-elastic roller 9 working coating unit 6.2 arranged slidably.
  • the equipped with a cloth 10 coating unit 6.1 is between two positions pivotable, in which they either the impression cylinder 5 or the transfer drum 4 is assigned.
  • a coating unit 6.1, 6.2 may also be provided a washing device.
  • a washing device usable are all washing devices that make a uniform film of the coating liquid can be applied to the sheet-guiding cylinder, which in the common washing devices of the brush, roller or cloth type is the case.
  • an aqueous or alcoholic solution containing inorganic nanoparticles modified with organic additives consist of oxides of the elements of II. To V. main and subgroup or mixtures thereof, in particular of silicon oxide, titanium oxide, aluminum oxide, zirconium oxide or mixtures thereof.
  • organic additives hydrolysis products of long-chain trialkoxysilanes R-Si (OR) 3 and / or dialkoxysilanes R-Si (OR) 2 wherein R contains from 4 to 18 carbon atoms in alkyl, aralkyl, or fluoroalkyl radicals are contemplated.
  • a coating liquid 8 whose nanocrystalline particles consist of a silica / alumina compound modified with fluoroalkylsilanes or fluoroalkyl-functionalized polysiloxanes, has proven particularly suitable.
  • the coating produced using such a coating liquid 8 on the sheet-guiding cylinders has a strong ink-repelling effect, so that a sheet-guiding cylinder is protected against contamination with printing ink.
  • the fixation of the coating liquid can be easily achieved by heat treatment in the form of a drying or depending on the composition of the coating liquid by irradiation with UV light or another suitable radiation source respectively. This triggers crosslinking reactions, over which in the coating liquid contained molecules are irreversibly interconnected.
  • heat treatment in the form of a drying or depending on the composition of the coating liquid by irradiation with UV light or another suitable radiation source respectively. This triggers crosslinking reactions, over which in the coating liquid contained molecules are irreversibly interconnected.
  • Temperatures in the range between 15 and 100 ° C are provided.
  • the applicator 11 is associated with a drying device 12, which preferably is designed as a hot air dryer.
  • a Radiation source be provided for UV light.
  • a washing device is provided as a coating unit 6.1, 6.1
  • the coating liquid 8 can be filled and applied directly into the container 7 originally provided for receiving a cleaning liquid.
  • 7 cleaning liquid or coating liquid 8 is provided as a medium in the container.
  • a container 7 for receiving the coating liquid 8 and a further separate container for receiving the cleaning liquid are provided. Both containers are connected via separate line systems with the applicator.
  • the pipe system 7 intended for receiving the coating liquid 8 and the applicator 11 is designed as a closed circuit. This ensures that even after a long period of non-use coating liquid is always applied with the desired solvent content.
  • the container 7 may be associated with a stirring device.
  • the coating process is initiated. Before applying the coating liquid 8, it must be ensured that the surface of the sheet-guiding cylinder is free from contamination. If this is not the case, the coating process is preceded by a cleaning process, for the implementation of which a washing device can be provided. Subsequently, the blanket cylinder 2 is turned off by the impression cylinder 5 in order to prevent coating liquid 8 from getting onto the blanket. With the help of the applicator 11 is applied as a uniform process, the coating liquid 8 on the sheet-guiding cylinder and the resulting layer, depending on the design of a roller 9 or a cloth 10 evened. For this purpose, the sheet-guiding cylinder is rotated at a constant speed under the fixed coating unit 6.1, 6.2. After application of the coating liquid 8, this is fixed by means of the drying device 12.

Description

Die vorliegende Erfindung bezieht sich auf eine Bogenrotationsdruckmaschine mit Druckwerken für den Mehrfarbendruck und wenigstens einer Beschichtungseinheit gemäß dem Oberbegriff von Patentanspruch 1 und ein Verfahren zum erstmaligen oder wiederholten Beschichten von bogenführenden Zylindern in Druckmaschinen gemäß dem Oberbegriff von Patentanspruch 19.The present invention relates to a sheet-fed rotary printing press with printing units for the multi-color printing and at least one coating unit according to the The preamble of claim 1 and a method for initial or repeated Coating of sheet-guiding cylinders in printing machines according to the preamble of Claim 19.

Die Mantelflächen der bogenführenden Zylinder in Druckmaschinen, einschließlich Druckzylinder, Übergabezylinder, Wende- oder Speicherzylinder treten während des Druckprozesses mit bedruckten Bogen in Kontakt. Die Gefahr der Verschmutzung durch Druckfarbe besteht insbesondere bei der Herstellung von beidseitig bedruckten Druckbogen. Diese werden, nachdem der Druckprozess auf der Schöndruckseite abgeschlossen ist, gewendet und den nachfolgend angeordneten Druckwerken zugeführt, wobei die bereits bedruckte Seite der Druckbogen der Mantelfläche der bogenführenden Zylinder zugewandt ist. In der Kontaktzone kann sich dabei Druckfarbe auf den bogenführenden Zylindern aufbauen und auf den folgenden Druckbogen ablagern, was zu Qualitätseinbußen führt.
Infolge der fortgesetzten Kontakte mit den Druckbogen werden die Mantelflächen der bogenführenden Zylinder zudem abgenutzt, was ebenfalls die Druckqualität beeinflusst.
The lateral surfaces of the sheet-guiding cylinders in printing presses, including impression cylinders, transfer cylinders, reversing or storage cylinders, come into contact with printed sheets during the printing process. The risk of contamination by printing ink exists in particular in the production of printed on both sides sheet. These are, after the printing process has been completed on the recto printing side, turned and fed to the subsequently arranged printing units, wherein the already printed side of the printed sheet of the lateral surface of the sheet-guiding cylinder faces. In the contact zone, printing ink can build up on the sheet-guiding cylinders and deposit on the following printed sheet, which leads to quality losses.
Due to the continued contact with the printing sheets, the lateral surfaces of the sheet-guiding cylinders are also worn, which also affects the print quality.

Es ist allgemein bekannt, auf bogenführenden Zylindern aufgeraute Folien mit farbabweisenden Eigenschaften anzuordnen. Eine derartige Folie ist in der DE 12 58 873 A1 beschrieben. Aus der DE 101 15 876 A1 ist eine Druckmaschine bekannt, deren bogenführende Zylinder mit Folien bespannt werden, die mit einer Titanoxid oder Zinkoxid enthaltenden, farbabweisenden Beschichtung versehen sind. Zur Aktivierung bzw. Auffrischung der farbabweisenden Eigenschaften der Beschichtung wird diese in bestimmten zeitlichen Abständen mit UV-Licht bestrahlt.It is well known, roughened on sheet-guiding cylinders roughened with color-repellent To arrange properties. Such a film is described in DE 12 58 873 A1. From DE 101 15 876 A1 a printing machine is known, the bow-guiding cylinder be covered with films containing a titanium oxide or zinc oxide, color-repellent Coating are provided. To activate or refresh the color-repellent Properties of the coating is this at certain intervals with UV light irradiated.

Nachteilig ist an diesen Lösungen, dass die Folien zur Aufrechterhaltung der farbabweisenden Eigenschaften und damit zur Gewährleistung guter Druckqualität nach einer vorbestimmten Benutzungsdauer ausgetauscht werden müssen. Zudem müssen an den bogenführenden Zylindern Einrichtungen zum Aufspannen der Folien vorgesehen sein.A disadvantage of these solutions that the films to maintain the ink repellent Properties and thus to ensure good print quality after a predetermined Use period must be replaced. In addition, to the bow-leading Cylinders means are provided for mounting the films.

Es ist nach der DE 199 48 311 A1 ferner die Verwendung einer Beschichtungszusammensetzung mit niedriger Oberflächenenergie für Teile einer Druckmaschine bekannt. Die mit der Beschichtungszusammensetzung erzeugte Oberfläche nutzt sich jedoch während des Betriebs der Maschine schnell ab.It is also the use of a coating composition according to DE 199 48 311 A1 with low surface energy known for parts of a printing press. The with the Coating composition produced surface, however, wears during operation the machine quickly.

Gemäß der Druckschrift DE OS 21 27 021 soll das Ablegen von Farbe und der Farbaufbau auf den Zylindermantel durch das Auftragen einer Wasserschicht vermieden werden. Das Wasser wirkt dabei als Trennmittel. Zur Erzeugung der Wasserschicht wird dem Druckzylindermantel gezielt mit Wasserdampf angereicherte Luft zugeführt.According to the document DE OS 21 27 021 the deposition of color and the color structure be avoided on the cylinder jacket by applying a layer of water. The Water acts as a release agent. To produce the water layer is the pressure cylinder jacket specifically supplied with steam-enriched air.

Die DE 43 20 069 offenbart ein Verfahren und eine Vorrichtung zur Reparatur von Zylindern von Druckmaschinen durch thermische Spritzbeschichtung. Die Vorrichtung wird in die Druckmaschine eingebaut, wenn die Oberfläche des betreffenden Zylinders verschlissen und reparaturbedürftig ist. Nach dem Abtragen eines Teiles des Zylindermantels wird dieser gestrahlt, erwärmt und thermisch spritzbeschichtet, woran sich das Glätten und Versiegeln der aufgebrachten Schicht anschließt. Die Beschichtung des Zylinders erweist sich als aufwändig. Durch die verfahrenstechnisch bedingten hohen Prozesstemperaturen bei der thermischen Beschichtung ergeben sich zusätzliche Gefahren und eine hohe Beanspruchung der anderen Maschinenkomponenten.DE 43 20 069 discloses a method and an apparatus for repairing cylinders of printing machines by thermal spray coating. The device is in the Printing machine installed when the surface of the relevant cylinder is worn out and is in need of repair. After removing a part of the cylinder jacket this is blasted, heated and thermally spray coated, followed by the smoothing and sealing of the applied layer adjoins. The coating of the cylinder proves to be expensive. Due to the process-related high process temperatures in the thermal Coating results in additional hazards and high stress on the other machine components.

Die DE-A-19 909 688 offenbart eine Bogerotationsdruck maschine mit Druckwerten für den Merkfarbendruck und einer Wascheinrichtung, die einen Behälter zur Aufnahme eines Mediums und eine Auftrageinrichtung aufweist, und einem bogenführenden Zylinder zugeordnet ist.DE-A-19 909 688 discloses a Bogerotationsdruck machine with pressure values for the Feature color printing and a washing device comprising a container for receiving a medium and a Having applicator, and is associated with a sheet-guiding cylinder.

Der Erfindung liegt die Aufgabe zugrunde, unter Vermeidung der vorgenannten Nachteile eine Bogenrotationsdruckmaschine mit Druckwerken für den Mehrfarbendruck und ein Verfahren zum erstmaligen oder wiederholten Beschichten zu schaffen, die einen dauerhaften Schutz für bogenführende Zylinder gegen Verschmutzung mit Druckfarbe gewährleisten.The invention is based on the object, while avoiding the aforementioned disadvantages a sheet-fed rotary printing press with printing units for multi-color printing and a method to create for the first or repeated coating, which is a permanent Ensure protection for bow-guiding cylinders against contamination with printing ink.

Erfindungsgemäß wird diese Aufgabe mit einer Druckmaschine der eingangs genannten Art, die die Merkmale der Patentansprüche 1 und 2 aufweist, sowie mit einem Verfahren das die Merkmale des Patentanspruchs 17 aufweist, gelöst.According to the invention, this object is achieved with a printing machine of the type mentioned in the introduction, having the features of claims 1 and 2, and with a method that the Features of claim 17, solved.

Die vorliegende Erfindung hat den Vorteil, dass sich sehr gute farbabweisende und/oder verschleißhemmende Eigenschaften auf den Manteloberflächen der bogenführenden Zylinder einer Druckmaschine erzeugen und über nahezu beliebig lange Zeiträume erhalten lassen. Dazu ist den bogenführenden Zylindern, insbesondere den mit einer bedruckten Bogenseite in Kontakt tretenden Zylindern, eine Beschichtungseinheit zugeordnet, die eine Auftrageinrichtung umfasst, mit der eine durch Trocknung zu fixierende Beschichtungsflüssigkeit auf die Oberfläche des bogenführenden Zylinders aufbringbar ist. Die derart erzeugte Schicht unterliegt zwar einem Verschleiß, kann aber leicht und beliebig oft in der Druckmaschine regeneriert werden. Der Austausch von verschlissenen Aufzügen oder das aufwändige Neubeschichten der Zylinder durch thermisches Spritzen entfällt.
Die vorliegende Erfindung eignet sich besonders für den Einsatz in Bogenrotationsdruckmaschinen mit Wendeeinrichtung, die den Bogen im Schön- und Widerdruck bedrucken können, findet aber auch Anwendung in reinen Schöndruckmaschinen. Die Regeneration der Eigenschaften kann als automatisierter Prozess während einer Druckpause durchgeführt werden, wozu es keiner manuellen Tätigkeiten, insbesondere keiner Montagearbeiten zum Wechseln von Aufzügen bedarf.
The present invention has the advantage that very good ink-repellent and / or wear-inhibiting properties can be produced on the mantle surfaces of the sheet-guiding cylinders of a printing press and can be obtained over virtually any desired length of time. For this purpose, a coating unit is assigned to the sheet-guiding cylinders, in particular the cylinders coming into contact with a printed sheet side, comprising a coating device with which a coating liquid to be fixed by drying can be applied to the surface of the sheet-guiding cylinder. Although the layer produced in this way is subject to wear, it can easily be regenerated as often as desired in the printing press. The replacement of worn elevators or the time-consuming re-stratification of the cylinders by thermal spraying is eliminated.
The present invention is particularly suitable for use in sheet-fed rotary printing presses with turning device, which can print the sheet in perfecting, but also finds application in pure straight printing presses. The regeneration of the properties can be performed as an automated process during a printing pause, which requires no manual activities, in particular no installation work to change lifts.

Eine andere Ausgestaltung der Erfindung sieht vor, eine an sich bekannte Wascheinrichtung als Beschichtungseinheit anzuordnen, die wahlweise zum Aufbringen der Beschichtungsflüssigkeit oder zum Waschen der Zylinderoberfläche einsetzbar ist. Der Wascheinrichtung kann je ein Behälter zur Aufnahme der Beschichtungsflüssigkeit und ein weiterer Behälter zur Aufnahme einer Reinigungsflüssigkeit zugeordnet sein.
Bei einer anderen Ausführung kann durch die Verwendung einer Behälteraufnahme der Beschichtungseinheit wahlweise ein Beschichtungsflüssigkeit oder ein Reinigungsflüssigkeit enthaltender Behälter zugeordnet werden.
Der Vorteil dieser Ausgestaltungen der Erfindung liegt in dem damit verbundenen geringen maschinenbaulichen Aufwand begründet.
Another embodiment of the invention provides to arrange a known washing device as a coating unit, which is optionally used for applying the coating liquid or for washing the cylinder surface. The washing device can be assigned to one container each for receiving the coating liquid and another container for receiving a cleaning liquid.
In another embodiment, the use of a container receptacle of the coating unit can optionally be assigned to a coating liquid or a container containing cleaning liquid.
The advantage of these embodiments of the invention is due to the associated low mechanical engineering effort.

Ein weiterer Vorteil der Erfindung besteht darin, dass die Beschichtungsflüssigkeit leicht zu handhaben ist und bei Raumtemperatur in flüssiger Form vorliegt. Sie besteht im Wesentlichen aus mit organischen Zusätzen modifizierten anorganischen Nanopartikeln, wobei die Nanopartikel in wässrigen, alkoholischen oder daraus gemischten Lösungsmitteln gelöst sind. Damit ist sie chemisch beständig, wodurch die Aufbewahrung erleichtert wird.Another advantage of the invention is that the coating liquid is easy to handle and is in liquid form at room temperature. It essentially consists of inorganic nanoparticles modified with organic additives, wherein the Nanoparticles dissolved in aqueous, alcoholic or mixed solvents are. This makes it chemically resistant, which makes storage easier.

Die auf den bogenführenden Zylindern applizierte Schicht kann abhängig von der Auswahl der Nanopartikel als farbabweisende und/oder verschleißhemmende Schicht ausgeführt werden. Die Fixierung der Schicht erfolgt in einfachster Weise durch Trocknung oder Bestrahlung mit UV-Licht.The layer applied to the sheet-guiding cylinders may depend on the selection the nanoparticles designed as a color-repellent and / or wear-inhibiting layer become. The fixation of the layer is done in the simplest way by drying or irradiation with UV light.

Bei einer vorteilhaften Ausgestaltung der Erfindung ist der Auftrageinrichtung eine Trocknungseinrichtung zugeordnet, durch die die Fixierung der Beschichtungsflüssigkeit beschleunigt werden kann.In an advantageous embodiment of the invention, the applicator is a drying device assigned, accelerated by the fixation of the coating liquid can be.

Anhand eines Ausführungsbeispiels soll die nachfolgende Erfindung näher erläutert werden. Reference to an embodiment, the following invention will be explained in more detail.

Die einzige Zeichnung zeigt in schematischer Darstellung die Seitenansicht einer Druckmaschine mit Beschichtungseinheiten, die den bogenführenden Zylindern zugeordnet sind.The single drawing shows a schematic representation of the side view of a printing press with coating units associated with the sheet-guiding cylinders.

Die Bogendruckmaschine weist einen Anlagetisch 13 und eine Zuführtrommel 14 auf, mit der vereinzelte Bogen dem ersten, mehrerer hintereinander angeordneter Druckwerke 1 zugeführt werden. Jedes der Druckwerke 1 umfasst einen als Gegendruckzylinder 5 ausgebildeten bogenführenden Zylinder, der mit einem Gummituchzylinder 2 in Kontakt steht, dem ein Plattenzylinder 3 zugeordnet ist. Zum Transport der Bogen zwischen den Druckwerken 1 ist je ein als Übergabetrommel 4 ausgebildeter bogenführender Zylinder angeordnet, wobei es für die Anwendung der Erfindung nicht auf die Anzahl der Übergabetrommeln 4 bzw. bogenführenden Zylinder ankommt und die Erfindung ebenso auf Bogendruckmaschinen anwendbar ist, zwischen deren Druckwerken 1 je drei Übergabetrommeln 4 angeordnet sind. Alle bogenführenden Zylinder sind in bekannter Art und Weise mit Greifersystemen ausgestattet. Eine oder mehrere der Übergabetrommeln 4 können zudem als Wendetrommeln ausgeführt sein. Bei der dargestellten Druckmaschine ist in Bogenlaufrichtung betrachtet die zweite Übergabetrommel 4 eine Wendetrommel.
Allen Gegendruckzylinder 5 der Druckmaschine ist eine Beschichtungseinheit 6.1, 6.2 zugeordnet. Die Beschichtungseinheiten 8 entsprechen in ihrem grundsätzlichen Aufbau an sich bekannten Wascheinrichtungen.
Die Beschichtungseinheit 6.2 besteht aus einem Behälter 7, der der Aufnahme der Beschichtungsflüssigkeit 8 dient, einer Auftrageinrichtung 11 und einer umlaufend angetriebenen Walze 9. Die Auftrageinrichtung 11 ist in Form einer sich über die Breite des bogenführenden Zylinders erstreckenden Düsenreihe ausgeführt, mit der unter Druck stehende Beschichtungsflüssigkeit 8 auf die Mantelfläche des Gegendruckzylinders 5 aufgebracht wird. Die Walze 9 verteilt die aufgebrachte Beschichtungsflüssigkeit 8 zu einer gleichmäßig dicken Schicht. Sie ist bevorzugt mit einem weichelastischen Überzug versehen oder kann als Bürstenwalze ausgebildet sein.
Bei der ähnlich aufgebauten Beschichtungseinheit 6.1 ist statt der Walze 9 ein umlaufend angetriebenes Tuch 10 vorgesehen. Der Auftrag der Beschichtungsflüssigkeit 8 erfolgt mit einer nicht dargestellten Auftrageinrichtung, die dies Beschichtungsflüssigkeit 8 auf das Tuch 10 aufsprüht. Nach dem Aufsprühen der Beschichtungsflüssigkeit 8 wird diese vom Tuch 10, welches mit der Mantelfläche des bogenführenden Zylinders in Kontakts steht, auf den bogenführenden Zylinder übertragen.
The sheet-fed printing machine has a feed table 13 and a feed drum 14, with which individual sheets are fed to the first, several printing units 1 arranged one behind the other. Each of the printing units 1 comprises a sheet-guiding cylinder designed as an impression cylinder 5, which is in contact with a blanket cylinder 2 to which a plate cylinder 3 is assigned. For transporting the sheet between the printing units 1 each designed as a transfer drum 4 sheet-guiding cylinder is arranged, it does not depend on the number of transfer drums 4 or sheet-guiding cylinder for the application of the invention and the invention is equally applicable to sheet-fed presses, between their printing units 1 three transfer drums 4 are arranged. All sheet-guiding cylinders are equipped in a known manner with gripper systems. One or more of the transfer drums 4 can also be designed as turning drums. In the illustrated printing machine, viewed in the sheet running direction, the second transfer drum 4 is a turning drum.
All counter-pressure cylinders 5 of the printing machine is assigned a coating unit 6.1, 6.2. The coating units 8 correspond in their basic structure to known washing devices.
The coating unit 6.2 consists of a container 7, which serves to receive the coating liquid 8, an applicator 11 and a circumferentially driven roller 9. The applicator 11 is designed in the form of an extending over the width of the sheet-guiding cylinder nozzle row, with the pressurized Coating liquid 8 is applied to the lateral surface of the impression cylinder 5. The roller 9 distributes the applied coating liquid 8 into a uniformly thick layer. It is preferably provided with a soft elastic coating or may be formed as a brush roller.
In the similarly constructed coating unit 6.1, a circumferentially driven cloth 10 is provided instead of the roller 9. The application of the coating liquid 8 takes place with an applicator, not shown, which sprays this coating liquid 8 onto the cloth 10. After spraying the coating liquid 8, it is transferred from the cloth 10, which is in contact with the lateral surface of the sheet-guiding cylinder, to the sheet-guiding cylinder.

Die Dicke der aufgebrachten Schicht lässt sich bei allen Ausführungen der Beschichtungseinheit 6.1, 6.2 durch Einstellung der Prozessparameter steuern. Dazu kann ein Sensor zur Erfassung der Schichtdicke vorgesehen sein, der mit einer Steuerung zusammenwirkt, die die Auftrageinrichtung 11 und die Bewegung der Walze 9 bzw. oder des Tuchs 10 steuert.The thickness of the applied layer can be in all embodiments of the coating unit 6.1, 6.2 control by setting the process parameters. This can be a sensor for Detecting the layer thickness may be provided, which cooperates with a controller, the the applicator 11 and the movement of the roller 9 and / or the cloth 10 controls.

Die Beschichtungseinheiten 6.1, 6.2 können fest einem einzigen oder wahlweise mehreren unterschiedlichen bogenführenden Zylinder zugeordnet sein. Die in Bogenlaufrichtung betrachtet erste, mit einer weichelastischen Walze 9 arbeitende Beschichtungseinheit 6.2 steht beispielhaft für eine fest angeordnete Beschichtungseinheit 6.2. Die anderen Beschichtungseinheiten 6.1, 6.2 können wahlweise einem Gegendruckzylinder 5 oder einer Bogenführungstrommel zugeordnet werden. Dazu ist die in Bogenlaufrichtung betrachtet zweite, mit einer weichelastischen Walze 9 arbeitende Beschichtungseinheit 6.2 verschiebbar angeordnet. Die mit einem Tuch 10 ausgestattete Beschichtungseinheit 6.1 ist zwischen zwei Stellungen verschwenkbar, in denen sie entweder dem Gegendruckzylinder 5 oder der Übergabetrommel 4 zugeordnet ist. Bei einer nicht dargestellten Ausgestaltung der Erfindung sind die Beschichtungseinheiten 6.1, 6.2 oberhalb der bogenführenden Zylinder angeordnet. Der Auftrag der Beschichtungsflüssigkeit 8 erfolgt bei dieser Ausgestaltung unmittelbar vor oder nach der Druckzone, die zwischen Gummituchzylinder 2 und Gegendruckzylinder 5 gebildet ist.The coating units 6.1, 6.2 may be fixed to a single or optionally several be assigned to different sheet-guiding cylinder. The considered in sheet travel direction first, working with a soft-elastic roller 9 coating unit 6.2 is by way of example for a fixedly arranged coating unit 6.2. The other coating units 6.1, 6.2 can optionally be a counter-pressure cylinder 5 or a sheet guiding drum be assigned. This is considered in the sheet running direction second, with a soft-elastic roller 9 working coating unit 6.2 arranged slidably. The equipped with a cloth 10 coating unit 6.1 is between two positions pivotable, in which they either the impression cylinder 5 or the transfer drum 4 is assigned. In an embodiment of the invention, not shown the coating units 6.1, 6.2 arranged above the sheet-guiding cylinder. Of the Application of the coating liquid 8 takes place in this embodiment immediately before or after the print zone formed between blanket cylinder 2 and impression cylinder 5 is.

Als Beschichtungseinheit 6.1, 6.2 kann auch eine Wascheinrichtung vorgesehen sein. Verwendbar sind alle Wascheinrichtungen, mit denen ein gleichmäßiger Film der Beschichtungsflüssigkeit auf dem bogenführenden Zylinder aufgebracht werden kann, was bei den gängigen Wascheinrichtungen des Bürsten-, Walzen- oder Tuchtyps der Fall ist.As a coating unit 6.1, 6.2 may also be provided a washing device. usable are all washing devices that make a uniform film of the coating liquid can be applied to the sheet-guiding cylinder, which in the common washing devices of the brush, roller or cloth type is the case.

Als Beschichtungsflüssigkeit 8 ist eine wässrige oder alkoholische Lösung vorgesehen, die mit organischen Zusätzen modifizierte anorganische Nanopartikel enthält. Die Nanopartikel bestehen aus Oxiden der Elemente der II. bis V. Haupt- und Nebengruppe oder deren Gemischen, insbesondere aus Siliziumoxid, Titanoxid, Aluminiumoxid, Zirkoniumoxid oder deren Gemischen. Als organische Zusätze sind Hydrolyseprodukte von langkettigen Trialkoxysilanen R-Si(OR)3 und/oder Dialkoxysilanen R-Si(OR)2, wobei R 4 bis 18 Kohlenstoffatome in Alkyl-, Aralkyl, oder Fluoralkylresten enthält, vorgesehen. Als besonders geeignet hat sich eine Beschichtungsflüssigkeit 8 erwiesen, deren nanokristalline Partikel aus einer Siliziumoxid/Aluminiumoxid Verbindung bestehen, die mit Fluoralkylsilanen oder fluoralkylfunktionalisierten Polysiloxanen modifiziert ist. Die unter Verwendung einer derartigen Beschichtungsflüssigkeit 8 auf den bogenführenden Zylindern erzeugte Beschichtung wirkt stark farbabweisend, so dass ein bogenführender Zylinder gegen Verschmutzung mit Druckfarbe geschützt ist. Abhängig von der Zusammensetzung der Beschichtungsflüssigkeit können alternativ oder zusätzlich zu den farbabweisenden Eigenschaften auch verschleißhemmende Eigenschaften eingestellt werden.As the coating liquid 8, there is provided an aqueous or alcoholic solution containing inorganic nanoparticles modified with organic additives. The nanoparticles consist of oxides of the elements of II. To V. main and subgroup or mixtures thereof, in particular of silicon oxide, titanium oxide, aluminum oxide, zirconium oxide or mixtures thereof. As organic additives, hydrolysis products of long-chain trialkoxysilanes R-Si (OR) 3 and / or dialkoxysilanes R-Si (OR) 2 wherein R contains from 4 to 18 carbon atoms in alkyl, aralkyl, or fluoroalkyl radicals are contemplated. A coating liquid 8, whose nanocrystalline particles consist of a silica / alumina compound modified with fluoroalkylsilanes or fluoroalkyl-functionalized polysiloxanes, has proven particularly suitable. The coating produced using such a coating liquid 8 on the sheet-guiding cylinders has a strong ink-repelling effect, so that a sheet-guiding cylinder is protected against contamination with printing ink. Depending on the composition of the coating liquid, it is also possible, as an alternative or in addition to the color-repelling properties, to adjust wear-inhibiting properties.

Die Fixierung der Beschichtungsflüssigkeit kann in einfacher Weise durch Wärmebehandlung in Form einer Trocknung oder abhängig von der Zusammensetzung der Beschichtungsflüssigkeit durch Bestrahlung mit UV-Licht oder einer anderen geeigneten Strahlungsquelle erfolgen. Damit werden Vernetzungsreaktionen ausgelöst, über die die in der Beschichtungsflüssigkeit enthaltenen Moleküle irreversibel miteinander verbunden werden. Zur Trocknung sind Temperaturen im Bereich zwischen 15 und 100°C vorgesehen.The fixation of the coating liquid can be easily achieved by heat treatment in the form of a drying or depending on the composition of the coating liquid by irradiation with UV light or another suitable radiation source respectively. This triggers crosslinking reactions, over which in the coating liquid contained molecules are irreversibly interconnected. For drying Temperatures in the range between 15 and 100 ° C are provided.

Dazu ist der Auftrageinrichtung 11 eine Trocknungseinrichtung 12 zugeordnet, die bevorzugt als Heisslufttrockner ausgebildet ist. Zur Fixierung UV-härtender Schichten, kann auch eine Strahlungsquelle für UV-Licht vorgesehen sein.For this purpose, the applicator 11 is associated with a drying device 12, which preferably is designed as a hot air dryer. For fixing UV-curing layers, can also be a Radiation source be provided for UV light.

Ist eine Wascheinrichtung als Beschichtungseinheit 6.1, 6.1 vorgesehen, kann die Beschichtungsflüssigkeit 8 direkt in den ursprünglich zur Aufnahme einer Reinigungsflüssigkeit vorgesehenen Behälter 7 eingefüllt und aufgebracht werden. Je nachdem, ob die Wascheinrichtung zum Waschen oder Beschichten des bogenführenden Zylinders eingesetzt wird, ist als Medium im Behälter 7 Reinigungsflüssigkeit oder Beschichtungsflüssigkeit 8 vorgesehen. Demgegenüber bevorzugt ist eine Ausführungsform, bei der ein Behälter 7 zur Aufnahme der Beschichtungsflüssigkeit 8 und ein weiterer separater Behälter zur Aufnahme der Reinigungsflüssigkeits vorgesehen sind. Beide Behälter sind über separate Leitungssysteme mit der Auftrageinrichtung verbunden. Das zwischen dem zur Aufnahme der Beschichtungsflüssigkeit 8 bestimmten Behälter 7 und der Auftrageinrichtung 11 vorgesehene Leitungssystem ist als geschlossener Kreislauf ausgebildet. Dadurch wird gewährleistet, dass auch nach einer längeren Phase der Nichtbenutzung stets Beschichtungsflüssigkeit mit dem gewünschten Lösungsmittelanteil aufgetragen wird.
Um der Entmischung der Beschichtungsflüssigkeit 8 entgegenzuwirken, kann dem Behälter 7 eine Rühreinrichtung zugeordnet sein.
If a washing device is provided as a coating unit 6.1, 6.1, the coating liquid 8 can be filled and applied directly into the container 7 originally provided for receiving a cleaning liquid. Depending on whether the washing device is used for washing or coating the sheet-guiding cylinder, 7 cleaning liquid or coating liquid 8 is provided as a medium in the container. In contrast, an embodiment is preferred in which a container 7 for receiving the coating liquid 8 and a further separate container for receiving the cleaning liquid are provided. Both containers are connected via separate line systems with the applicator. The pipe system 7 intended for receiving the coating liquid 8 and the applicator 11 is designed as a closed circuit. This ensures that even after a long period of non-use coating liquid is always applied with the desired solvent content.
To counteract the segregation of the coating liquid 8, the container 7 may be associated with a stirring device.

Nachfolgend soll die Wirkungsweise der Erfindung beschrieben werden.
Weisen die bogenführenden Zylinder keine farbabweisende Schicht auf oder ist eine ursprünglich aufgebrachte Schicht abgenutzt, wird der Beschichtungsvorgang eingeleitet. Vor dem Aufbringen der Beschichtungsflüssigkeit 8 muss sichergestellt werden, dass die Oberfläche des bogenführenden Zylinders frei von Verschmutzungen ist. Ist das nicht der Fall, geht dem Beschichtungsvorgang ein Reinigungsvorgang voraus, zu dessen Durchführung eine Wascheinrichtung vorgesehen sein kann.
Anschließend wird der Gummitüchzylinder 2 vom Gegendruckzylinder 5 abgestellt, um zu verhindern, dass Beschichtungsflüssigkeit 8 auf das Gummituch gelangt. Mit Hilfe der Auftrageinrichtung 11 wird als einheitlicher Vorgang die Beschichtungsflüssigkeit 8 auf dem bogenführenden Zylinder aufgebracht und die entstehende Schicht je nach Ausführung von einer Walze 9 oder einem Tuch 10 vergleichmäßigt. Dazu wird der bogenführende Zylinder mit konstanter Geschwindigkeit unter der feststehenden Beschichtungseinheit 6.1, 6.2 gedreht. Nach dem Aufbringen der Beschichtungsflüssigkeit 8 wird diese mit Hilfe der Trocknungseinrichtung 12 fixiert.
The operation of the invention will be described below.
If the sheet-guiding cylinders have no ink-repellent layer or if an originally applied layer is worn, the coating process is initiated. Before applying the coating liquid 8, it must be ensured that the surface of the sheet-guiding cylinder is free from contamination. If this is not the case, the coating process is preceded by a cleaning process, for the implementation of which a washing device can be provided.
Subsequently, the blanket cylinder 2 is turned off by the impression cylinder 5 in order to prevent coating liquid 8 from getting onto the blanket. With the help of the applicator 11 is applied as a uniform process, the coating liquid 8 on the sheet-guiding cylinder and the resulting layer, depending on the design of a roller 9 or a cloth 10 evened. For this purpose, the sheet-guiding cylinder is rotated at a constant speed under the fixed coating unit 6.1, 6.2. After application of the coating liquid 8, this is fixed by means of the drying device 12.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Druckwerkprinting unit
22
GummituchzylinderBlanket cylinder
33
Plattenzylinderplate cylinder
44
ÜbergabetrommelTransfer drum
55
GegendruckzylinderImpression cylinder
6.16.1
Beschichtungseinheitcoating unit
6.26.2
Beschichtungseinheitcoating unit
77
Behältercontainer
88th
Beschichtungsflüssigkeitcoating liquid
99
Walzeroller
1010
Tuchcloth
1111
Auftrageinrichtungapplicator
1212
Trocknungseinrichtungdrying device
1313
Anlagetischfeed table
1414
Zuführtrommelfeed drum

Claims (22)

  1. Rotary sheet printing machine with printing mechanisms for multi-colour printing and at least one washing device (6.1, 6.2), wherein the washing device (6.1, 6.2) comprises a container (7) for receiving a medium (8) and an applicator device (11) and is associated with a sheet-conducting cylinder (4, 5), characterised in that the washing device (6.1, 6.2) comprises a container receptacle in which there is selectably insertable a container (7), which contains a coating liquid (8) forming a solid ink-repelling and/or wear-inhibiting coating when applied and fixed to the sheet-conducting cylinder (4, 5) or which contains a cleaning liquid, in such a manner that the sheet-conducting cylinder (4, 5) can be selectably coated or washed by the washing device (6.1, 6.2).
  2. Rotary sheet printing machine with printing mechanisms for multi-colour printing and at least one washing device (6.1, 6.2), wherein the washing device (6.1, 6.2) comprises a container (7) for receiving a medium (8) and an applicator device (11) and is associated with a sheet-conducting cylinder (4, 5), characterised in that the washing device (6.1, 6.2) comprises a container (7) for reception of a coating liquid (8), which forms a solid ink-repelling and/or wear-inhibiting coating when applied and fixed to the sheet-conducting cylinder (4, 5), and a further container (7) for reception of a cleaning liquid, in such a manner that the sheet-conducting cylinder (4, 5) can be selectably coated or washed by the washing device (6.1, 6.2).
  3. Rotary sheet printing machine according to claim 1 or 2, characterised in that the applicator device is formed as a soft-resilient roller (9), brush or cloth (10).
  4. Rotary sheet printing machine according to one of claims 1 to 3, characterised in that a drying device (12) is associated with the sheet-conducting cylinder (4, 5).
  5. Rotary sheet printing machine according to claim 4, characterised in that the drying device (12) operates with hot air or infrared or with ultraviolet at night.
  6. Rotary sheet printing machine according to one of claims 1 to 5, characterised in that a stirring device is associated with the container (7).
  7. Rotary sheet printing machine according to one of the preceding claims, characterised in that a guide system is provided in which coating liquid (8) can be conveyed from the container (7) to the applicator device (11) and excess coating liquid (8) can be transferred back from the applicator device (11) to the container (7).
  8. Rotary sheet printing machine according to one of the preceding claims, characterised in that selectably different sheet-conducting cylinders (4, 5) can be associated with the coating unit (6.2, 6.2).
  9. Rotary sheet printing machine according to one of the preceding claims, characterised in that the coating liquid (8) consists of anorganic nanoparticles which are modified with organic additives and which are dissolved in an aqueous solvent, an alcoholic solvent or a solvent mixed therefrom.
  10. Rotary sheet printing machine according to claim 9, characterised in that the coating liquid (8) gels during drying.
  11. Rotary sheet printing machine according to claim 9 or 10, characterised in that the nanoparticles consist of oxides of elements of the II to V primary and subsidiary groups or mixtures thereof, particularly silicon oxide, titanium oxide, aluminium oxide, zirconium oxide or mixtures thereof.
  12. Rotary sheet printing machine according to one of claims 9 to 11, characterised in that hydrolysis products of long-chain trialkoxysilanes R-Si(OR)3 and/or dialkoxysilanes R-Si(OR)2, wherein R contains 4 to 18 carbon atoms in alkyl, aralkyl or fluoralkyl groups, are provided as organic additives.
  13. Rotary sheet printing machine according to one of claims 9 to 11, characterised in that polysiloxanes with terminal alkyl, aryl, hydroxyalkyl, epoxy or polyether groups are provided as organic additives.
  14. Rotary sheet printing machine according to claim 9, characterised in that the nanoparticles consist of a silicon oxide and aluminium oxide compound modified by fluoralkylsilanes or fluoralkyl-functionalised polysiloxanes.
  15. Rotary sheet printing machine according to one of claims 9 to 14, characterised in that the coating liquid is fixable by subsequent thermal treatment in the range of 15 to 100° C.
  16. Rotary sheet printing machine according to one of claims 9 to 15, characterised in that the coating liquid (8) contains a photo-initiator and is fixable by irradiation with ultraviolet light.
  17. Method for single or repeated coating of sheet-conducting cylinders (5) of printing machines in the state of installation in the printing machine, in which a blanket cylinder (2) is associated with the sheet-conducting cylinders (5) acting as counter-pressure cylinders and a coating unit (6.1, 6.2) is associated with at least one of the sheet-conducting cylinders and comprises an applicator device (11) and a container (7) for reception of a coating liquid (8), characterised in that the coating liquid (8) forms an ink-repelling and/or wear-inhibiting coating, the blanket cylinder (2) is set away from the counter-pressure cylinder (5), and the coating liquid (8) is applied by the applicator device (11) to the sheet-conducting cylinder (5) and is fixed by drying or irradiation by ultraviolet light.
  18. Method according to claim 17, characterised in that the sheet-conducting cylinder (5) is cleaned before application of the coating.
  19. Method according to claim 17 or 18, characterised in that the coating liquid (8) is dried at temperatures in the range of 15 to 100° C Celsius.
  20. Method according to one of claims 17 to 19, characterised in that the sheet-conducting cylinder (5) is rotated at constant speed during application of the coating liquid (8).
  21. Method according to one of claims 17 to 20, characterised in that a washing device is used as coating unit (6.1, 6.2).
  22. Method according to one of claims 17 to 21, characterised in that the coating liquid (8) consists of anorganic nanoparticles which are modified with organic additives and which are dissolved in an aqueous solvent, an alcoholic solvent or a solvent mixed therefrom.
EP20030008408 2002-06-21 2003-04-11 Rotary printing machine with a coating unit and procedure for coating a sheet conveying cylinder Expired - Fee Related EP1375142B1 (en)

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DE2002127758 DE10227758A1 (en) 2002-06-21 2002-06-21 Rotary printing machine with a coating unit and method for coating sheet-guiding cylinders
DE10227758 2002-06-21

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EP1375142A3 EP1375142A3 (en) 2004-05-12
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Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004055315A1 (en) * 2004-11-16 2006-05-18 Man Roland Druckmaschinen Ag Multi-color printing machine and method for operating a multi-color printing machine
DE502004003789D1 (en) * 2004-11-30 2007-06-21 Oxy Dry Maschinen Gmbh Method and device for cleaning cylinders of a printing machine
DE102006012607A1 (en) * 2006-03-18 2007-09-20 Man Roland Druckmaschinen Ag Satellite printing unit of a web-fed rotary printing machine
DE102006041219A1 (en) * 2006-09-02 2008-03-06 Koenig & Bauer Aktiengesellschaft Inline method for printing paper sheet, involves applying color rejected coating on printing lacquer-coating, delivering paper sheet to turnover device, turning paper sheet, and printing rear side of paper sheet
DE102007057798B4 (en) 2006-12-20 2018-12-06 Heidelberger Druckmaschinen Ag Process for treating a printing surface
DE102008016445A1 (en) 2007-04-26 2008-10-30 Heidelberger Druckmaschinen Ag Printing machine with counter pressure cylinder powder unit e.g. for transferring powder to printing sheets, has counter full pressure cylinder and body powder for application of powder on counter-pressure cylinder
DE102008029817A1 (en) 2008-06-24 2009-12-31 Heidelberger Druckmaschinen Ag Print substrate contacting surface e.g. cylinder casing, manufacturing method for e.g. sheet processing rotary printing press, involves treating structured metal substrate with poly electrolytes, and with amphiphile substance
US8281716B2 (en) * 2008-12-24 2012-10-09 Printing Research, Inc. Anti-marking jackets comprised of fluoropolymer and methods of using in offset printing
DE102011010718B4 (en) * 2010-03-12 2022-07-07 Heidelberger Druckmaschinen Ag Process for producing a structured surface that contacts the printing material
DE102015226246A1 (en) 2015-12-21 2016-02-25 Heidelberger Druckmaschinen Ag Process for producing a surface for the transport of printing material

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB645083A (en) * 1948-03-10 1950-10-25 Oxvar Ltd Improved method and machine for the cleaning of cylinders
US3161130A (en) 1963-05-27 1964-12-15 Miller Printing Machinery Co Printing apparatus
DD60314A1 (en) * 1967-04-03 1968-02-20 Device for preventing the ink from lying on the printing cylinder of perfecting machines
US3686771A (en) 1970-07-23 1972-08-29 Polygraph Leipzig Humidity regulating system for printing machines
FR2587274B3 (en) * 1985-09-16 1987-10-30 Mareels Gerard ANTIMACULATING DEVICE FOR TRANSPORTING PRINTED TAPE
DE9303835U1 (en) * 1993-03-16 1993-05-06 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4320069A1 (en) 1993-06-17 1995-01-12 Roland Man Druckmasch Method and device for repairing cylinders of printing machines
DE19541160C1 (en) * 1995-11-04 1997-01-30 Roland Man Druckmasch Process for cleaning a cylinder of a rotary printing press
JP3005620B2 (en) * 1996-03-28 2000-01-31 レフライト株式会社 Ink stain prevention sheet
DE19948311A1 (en) 1999-10-06 2001-04-12 Nanogate Gmbh Process for improving print quality and/or down time of printing machines comprises adjustment of surface energies of surfaces that come into contact with ink to single transition point
DE10115876A1 (en) 2000-04-27 2001-10-31 Heidelberger Druckmasch Ag Colour rejecting coating for an element that comes into contact with a printing material, consists of a material which rejects colour after being irradiated with light.

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DE10227758A1 (en) 2004-01-29
EP1375142A2 (en) 2004-01-02
DE50301245D1 (en) 2006-02-09
EP1375142A3 (en) 2004-05-12

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