EP0355473B1 - Device for drying printed products in a printing press - Google Patents
Device for drying printed products in a printing press Download PDFInfo
- Publication number
- EP0355473B1 EP0355473B1 EP89113943A EP89113943A EP0355473B1 EP 0355473 B1 EP0355473 B1 EP 0355473B1 EP 89113943 A EP89113943 A EP 89113943A EP 89113943 A EP89113943 A EP 89113943A EP 0355473 B1 EP0355473 B1 EP 0355473B1
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- EP
- European Patent Office
- Prior art keywords
- radiation
- printed products
- radiation energy
- printed
- printing machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/0486—Particular types of dryers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S118/00—Coating apparatus
- Y10S118/01—Anti-offset
Definitions
- the invention relates to a device for drying printed products according to the preamble of claim 1 and claim 2.
- a device is known from JP 59-133058 A in which a laser light source generates a laser beam.
- This laser beam is directed via a rotating polygon mirror onto a printed product, which is carried out continuously under the laser beam. Due to the rotating polygon mirror, the laser beam oscillates across the width of the printed product and causes heating and thus drying of the printing ink applied to the printed product.
- a disadvantage of this known device can be seen in the fact that the laser beam only heats the printed product selectively. This requires a very high energy density, since the point of incidence of the laser beam must be guided over the printed product at high speed in order to cover its entire area. In addition, a drive device is required for the polygon mirror.
- Such a device has become known, for example, from GB 20 31 298 A.
- a device for accelerating chemical reactions is described, in which a laser beam is expanded via reflectors so that the radiation can be used, for example, to dry a printed product.
- the invention is therefore based on the object of avoiding negative influences on the printing press caused by the radiation device due to its heat loss and to achieve the fastest possible drying of the ink with optimal use of the radiation energy.
- a major advantage of the solution according to the main claim is to be seen in the fact that unnecessary heating in the printing press is avoided by arranging the radiation device outside the printing press.
- a radiation device can be a laser beam source, for example.
- the laser beam is transmitted by suitable transmission means that have a low power loss. It is also advantageous to allow the radiation energy to strike the entire width or a partial area of the surface of the printed products at the same time. This means that the radiation energy does not hit them point by point, but rather linearly, which results in a better drying effect and a higher drying speed.
- an optical fiber cable is used as the transmission means.
- Optical fibers can be used to bridge long distances between a radiation device and the place where the radiation energy is used. If this optical fiber cable consists of a large number of individual fibers, then according to a further development of the device according to the invention, its end is fanned out in a linear manner, ie. that is, the individual optical fibers are separated into one or more rows that end above the surface of the printed products. The width of such a row corresponds to the width of the surface to be dried.
- a gas-filled tube is provided as the transmission means for the radiation energy.
- Nitrogen is expediently used as the gas filling - in a further development of the invention.
- Such a pipe can also be used to achieve very long lines.
- the formation of a linear radiation energy is at the end of the tube
- An optical beam splitter device according to the invention is provided.
- UV inks recently used in offset printing harden when exposed to UV light. Compared to solvent-based inks, these inks have the advantage that they can be dried without unnecessarily heating the printed product. It is therefore expedient and provided according to a further development of the invention to generate the radiation with a wavelength that is in the UV range.
- this tube is provided with a UV-reflecting inner coating.
- a UV-reflecting inner coating With such an inner coating, it is possible to lay the pipe as desired like an optical fiber. Deflecting mirrors and straight pipe routing are then not required.
- the entire device can be integrated into a control circuit for controlling the radiation energy to be supplied. Since a printed copy is rarely printed over the entire area, but also very often has image-free areas, it is advantageous not to allow any radiation energy to strike the printed product or the printed sheet at the image-free areas. This means that radiation energy only needs to be supplied to the printing sheet where it is required due to the presence of ink to be dried.
- the radiation energy is controlled by a control device.
- This control device is supplied with information about color-guiding or non-color-guiding areas on the printed product via sensors. For example, the sensors are directed in the same way as the line of incidence of the radiation energy on the printed sheet and detect the ink application on this sheet. The signals generated by the sensors are fed to the control device, the control device using these signals to switch the intensity of the radiation energy.
- an electronic memory can also be provided, in which the structure of the printed product, ie the distribution of ink-guiding and non-ink-guiding surfaces, is stored. Cyclic reading of the memory content with the control device is carried out in the same way Beam intensity or the switching of the radiation energy controlled.
- the radiation device can be equipped with radiation sources that generate different wavelengths. This has the advantage that it is possible to dry inks that harden in different UV ranges. Depending on the color used, the corresponding UV ranges are selected and the radiation device is activated with the corresponding wavelength.
- the schematic representation of a printing press 1 shows a sheet-fed offset printing press with a sheet feeder 2, four printing units 3, 4, 5, 6 and a sheet delivery unit 7.
- the drive 8 of the printing press is an electric motor 9.
- Transfer drums 10 are located between the individual printing units , 11, 12, which convey the sheets from one printing unit to the next.
- the sheet is transported along the transport path 21 (FIG. 2).
- a suitable drying device has several components.
- a first component is a device for generating radiation energy, which consists of a laser beam device 13.
- Such a laser beam device contains an electronic control unit 14 and a laser tube 15. This laser beam device is known, for example, from "Lambda Physics Laser Beam Technology", information leaflet from Lambda Physiks GmbH, Göttingen, Germany.
- the laser beam generated by the laser tube is fed into an optical fiber cable 16, 17, which consists, for example, of a bundle of optical fibers, as a further component.
- the entire laser beam device 13 is arranged outside the printing press in a suitable housing.
- the only connection between the laser beam device and the printing press is via the optical fiber cables 16, 17.
- the ends of the optical fiber cable 16 are brought up to the transfer drums of the individual printing units and end just above the outer surface of these transfer drums.
- the ends of the optical fiber cable 17 are to a chain delivery 18, which transports the printed sheets to the sheet delivery 7.
- the printed sheets are then dried on both sides in the area of the chain delivery.
- the ink or coating layer applied by the printing unit 6 is dried.
- FIG. 2 An embodiment of the end of an optical fiber cable 16 is shown in more detail in FIG. 2.
- a print sheet 19 is located on the transfer drum 12. This is held at its front end by means of a gripper 20 and transported along the transport path 21.
- Above the Transfer drum 12 is arranged on a traverse 22, the end of the optical fiber cable 16.
- the optical fiber cable 16 is split, ie the individual fibers of the cable are arranged so that they have a line running transversely to the transport direction of the sheet, form.
- the laser beam emerging at the ends of the optical fiber cable 16 strikes the arc surface almost perpendicularly.
- a plurality of laser tubes can also be arranged, each of which generates a laser beam of a specific wavelength.
- the laser beams of different wavelengths are led to the individual printing units via separate or a common optical fiber cable. With this multiple laser, each printed color is optimally cured according to its absorption behavior and its curing properties.
- a so-called UV excimer laser can also be used to generate the laser beam.
- excimers are formed by an electrical discharge under certain discharge conditions. These are molecular complexes such as Xe2, which emit UV radiation when decaying.
- Xe2 molecular complexes
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- General Engineering & Computer Science (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Trocknen von Druckprodukten gemäß dem Oberbegriff des Anspruches 1 bzw. des Anspruches 2.The invention relates to a device for drying printed products according to the preamble of claim 1 and
Aus der JP 59-133058 A ist eine Vorrichtung bekannt, bei welcher eine Laserlichtquelle einen Laserstrahl erzeugt. Dieser Laserstrahl wird über einen rotierenden Polygonspiegel auf ein Druckprodukt gelenkt, das kontinuierlich unter dem Laserstrahl durchgeführt wird. Durch den rotierenden Polygonspiegel oszilliert der Laserstrahl über die Breite des Druckproduktes und bewirkt eine Erwärmung und damit eine Trocknung der auf dem Druckprodukt aufgebrachten Druckfarbe.A device is known from JP 59-133058 A in which a laser light source generates a laser beam. This laser beam is directed via a rotating polygon mirror onto a printed product, which is carried out continuously under the laser beam. Due to the rotating polygon mirror, the laser beam oscillates across the width of the printed product and causes heating and thus drying of the printing ink applied to the printed product.
Ein Nachteil dieser bekannten Vorrichtung ist darin zu sehen, daß nur eine punktuelle Erwärmung des Druckprodukts durch den Laserstrahl erfolgt. Dies erfordert eine sehr hohe Energiedichte, da der Auftreffpunkt des Laserstrahls mit hoher Geschwindigkeit über das Druckprodukt geführt werden muß, um dessen gesamte Fläche zu erfassen. Außerdem ist für den Polygonspiegel eine Antriebseinrichtung erforderlich.A disadvantage of this known device can be seen in the fact that the laser beam only heats the printed product selectively. This requires a very high energy density, since the point of incidence of the laser beam must be guided over the printed product at high speed in order to cover its entire area. In addition, a drive device is required for the polygon mirror.
Ein weiterer Nachteil dieser Anordnung ist darin zu sehen, daß zur Vermeidung langer Strahlenwege die Strahlungseinrichtung möglichst in der Nähe der frisch bedruckten Druckprodukte, d.h. unmittelbar in der Druckmaschine anzuordnen ist. Da die Strahlungseinrichtung jedoch eine erhebliche Verlustwärme erzeugt, führt dies zu einer unerwünschten örtlichen Erwärmung auch von Druckmaschinenteilen. Solche örtlichen Erwärmungen in der Druckmaschine beeinträchtigen einerseits die Funktionsfähigkeit der paßgenauen Lagerstellen, andererseits besteht die Gefahr, daß durch Wärmedehnung bestimmter mechanischer Teile Passerfehler im Druckbild entstehen.Another disadvantage of this arrangement can be seen in the fact that, in order to avoid long radiation paths, the radiation device should be arranged as close as possible to the freshly printed printed products, ie directly in the printing press. However, since the radiation device generates considerable heat loss, this also leads to undesirable local heating Printing machine parts. Such local heating in the printing press on the one hand affects the functionality of the precisely fitting bearings, on the other hand there is a risk that thermal expansion of certain mechanical parts will cause registration errors in the print image.
Es wurde zwar bisher versucht, diese Erwärmung von Druckmaschinenteilen dadurch zu vermeiden, daß die Strahlungseinrichtung einen gewissen Abstand zu den unmittelbar benachbarten Teilen der Druckmaschine aufwies, so daß eine Belüftung der Strahlungseinrichtung möglich war. Dies erforderte jedoch einen sehr großen Einbauraum. Gerade bei einer Druckmaschine sind solche zusätzlichen großvolumigen Teile sehr störend, da der Einbauraum für andere Elemente, wie beispielsweise Sensoren oder Stellelemente gebraucht wird und alle Teile der Druckmaschine von außen außerdem gut zugänglich sein sollen.Attempts have so far been made to avoid this heating of printing machine parts in that the radiation device has a certain distance from the immediately adjacent parts of the printing machine, so that ventilation of the radiation device was possible. However, this required a very large installation space. In the case of a printing press in particular, such additional large-volume parts are very disruptive, since the installation space is used for other elements, such as sensors or adjusting elements, and all parts of the printing press should also be easily accessible from the outside.
Eine derartige Vorrichtung ist beispielsweise aus der GB 20 31 298 A bekannt geworden. In dieser Schrift wird ein Gerät zur Beschleunigung chemischer Reaktionen beschrieben, bei dem ein Laserstrahl über Reflektoren so aufgeweitet wird, daß die Strahlung beispielsweise zur Trocknung eines Druckproduktes verwendet werden kann.Such a device has become known, for example, from
Der Erfindung liegt deshalb die Aufgabe zugrunde, negative Einflüsse auf die Druckmaschine, die durch die Strahlungseinrichtung aufgrund ihrer Verlustwärme entstehen, zu vermeiden und unter optimaler Ausnutzung der Strahlungsenergie eine möglichst rasche Trocknung der Farbe zu erzielen.The invention is therefore based on the object of avoiding negative influences on the printing press caused by the radiation device due to its heat loss and to achieve the fastest possible drying of the ink with optimal use of the radiation energy.
Diese Aufgabe wird durch die Merkmale des kennzeichnenden Teils des Anspruches 1 bzw. des nebengeordneten Anspruches 2 gelöst.This object is achieved by the features of the characterizing part of claim 1 and the
Ein wesentlicher Vorteil der Lösung gemäß dem Hauptanspruch, ist darin zu sehen, daß eine unnötige Erwärmung in der Druckmaschine durch die Anordnung der Strahlungseinrichtung außerhalb der Druckmaschine vermieden wird. Eine solche Strahlungseinrichtung kann beispielsweise eine Laserstrahlquelle sein. Die Übertragung des Laserstrahls erfolgt dabei durch geeignete übertragungsmittel, die eine geringe Verlustleistung aufweisen. Es ist weiterhin von Vorteil, die Strahlungsenergie gleichzeitig auf der gesamten Breite oder eines Teilbereichs der Oberfläche der Druckprodukte auftreffen zu lassen. Damit werden diese nicht punktweise, sondern linienförmig von der Strahlungsenergie getroffen, was einen besseren Trocknungseffekt und eine höhere Trocknungsgeschwindigkeit bewirkt.A major advantage of the solution according to the main claim is to be seen in the fact that unnecessary heating in the printing press is avoided by arranging the radiation device outside the printing press. Such a radiation device can be a laser beam source, for example. The laser beam is transmitted by suitable transmission means that have a low power loss. It is also advantageous to allow the radiation energy to strike the entire width or a partial area of the surface of the printed products at the same time. This means that the radiation energy does not hit them point by point, but rather linearly, which results in a better drying effect and a higher drying speed.
Als übertragungsmittel wird gemäß einer ersten erfindungsgemäßen Ausführungsform ein Lichtleitfaserkabel zu benutzen. Mit Lichtleitfasern können lange Wege zwischen einer Strahlungseinrichtung und dem Ort der Nutzung der Strahlungsenergie überbrückt werden. Besteht dieses Lichtleitfaserkabel aus einer Vielzahl von einzelnen Fasern, so ist gemäß einer Weiterbildung der erfindungsgemäßen Vrorichtung sein Ende linienförmig aufgefächert werden, d. h., die einzelnen Lichtleitfasern werden in eine oder mehrere Reihen aufgetrennt, die über der Oberfläche der Druckprodukte enden. Die Breite einer solchen Reihe entspricht dabei der Breite der zu trocknenden Oberfläche.According to a first embodiment of the invention, an optical fiber cable is used as the transmission means. Optical fibers can be used to bridge long distances between a radiation device and the place where the radiation energy is used. If this optical fiber cable consists of a large number of individual fibers, then according to a further development of the device according to the invention, its end is fanned out in a linear manner, ie. that is, the individual optical fibers are separated into one or more rows that end above the surface of the printed products. The width of such a row corresponds to the width of the surface to be dried.
Anstelle eines Lichtleitfaserkabels ist gemäß einer zweiten erfindungsgemäßen Ausführungsform ein gasgefülltes Rohr als übertragungsmittel für die Strahlungsenergie vorgesehen. Als Gasfüllung wird - die Erfindung weiterbildend - zweckmäßigerweise Stickstoff verwendet. Mit einem solchen Rohr können ebenfalls sehr hohe Leitungswege realisiert werden. Zur Bildung einer linienförmigen Strahlungsenergie ist am Ende des Rohrs gemäß einer Weiterbildung der erfindungsgemäßen Vorrichtung eine optische Strahlteilereinrichtung vorgesehen.Instead of an optical fiber cable, according to a second embodiment of the invention, a gas-filled tube is provided as the transmission means for the radiation energy. Nitrogen is expediently used as the gas filling - in a further development of the invention. Such a pipe can also be used to achieve very long lines. According to a further development, the formation of a linear radiation energy is at the end of the tube An optical beam splitter device according to the invention is provided.
Die im Offsetdruck neuerdings verwendeten UV-Farben härten bei Einwirkung von UV-Licht aus. Gegenüber lösungsmittelhaltige Farben haben diese Farben den Vorteil, daß die Trocknung ohne eine unnötige Erwärmung des Druckprodukts erfolgen kann. Es ist deshalb zweckmäßig und gemäß einer Weiterbildung der Erfindung vorgesehen, die Strahlung mit einer Wellenlänge zu erzeugen, die im UV-Bereich liegt.The UV inks recently used in offset printing harden when exposed to UV light. Compared to solvent-based inks, these inks have the advantage that they can be dried without unnecessarily heating the printed product. It is therefore expedient and provided according to a further development of the invention to generate the radiation with a wavelength that is in the UV range.
In einer Ausgestaltung des gasgefüllten Rohrs als Übertragungsmittel ist vorgesehen, dieses Rohr mit einer UV-reflektierenden Innenbeschichtung zu versehen. Mit einer solchen Innenbeschichtung besteht die Möglichkeit, das Rohr wie eine Lichtleitfaser beliebig zu verlegen. Umlenkspiegel und eine gerade Rohrführung ist dann nicht erforderlich.In an embodiment of the gas-filled tube as a transmission means, it is provided that this tube is provided with a UV-reflecting inner coating. With such an inner coating, it is possible to lay the pipe as desired like an optical fiber. Deflecting mirrors and straight pipe routing are then not required.
Die gesamte Vorrichtung kann in einen Steuerkreis zur Steuerung der zuzuführenden Strahlungsenergie eingebunden sein. Da ein Druckexemplar in den seltensten Fällen über die gesamte Fläche bedruckt ist, sondern auch sehr oft bildfreie Stellen aufweist, ist es von Vorteil, an den bildfreien Stellen keine Strahlungsenergie auf das Druckprodukt bzw. dem Druckbogen auftreffen zu lassen. Dies bedeutet, daß Strahlungsenergie nur dort dem Druckbogen zugeführt werden braucht, wo sie durch die Anwesenheit von zu trocknender Farbe erforderlich ist. Die Steuerung der Strahlungsenergie erfolgt dabei durch eine Steuereinrichtung. Dieser Steuereinrichtung wird über Sensoren die Information über farbführende bzw. nicht-farbführende Flächen auf dem Druckprodukt zugeführt. Die Sensoren sind beispielsweise in gleicher Weise wie die Auftrefflinie der Strahlungsenergie auf den Druckbogen gerichtet und erfassen den Farbauftrag auf diesem Bogen. Die von den Sensoren erzeugten Signale werden der Steuereinrichtung zugeführt, wobei die Steuereinrichtung anhand dieser Signale die Intensität der Strahlungsenergie schaltet.The entire device can be integrated into a control circuit for controlling the radiation energy to be supplied. Since a printed copy is rarely printed over the entire area, but also very often has image-free areas, it is advantageous not to allow any radiation energy to strike the printed product or the printed sheet at the image-free areas. This means that radiation energy only needs to be supplied to the printing sheet where it is required due to the presence of ink to be dried. The radiation energy is controlled by a control device. This control device is supplied with information about color-guiding or non-color-guiding areas on the printed product via sensors. For example, the sensors are directed in the same way as the line of incidence of the radiation energy on the printed sheet and detect the ink application on this sheet. The signals generated by the sensors are fed to the control device, the control device using these signals to switch the intensity of the radiation energy.
In einer Weitebildung der Erfindung kann anstelle einer solchen Sensoranordnung auch ein elektronischer Speicher vorgesehen sein, in welchem der Aufbau des Druckprodukts, d.h. die Verteilung von farbführenden und nicht-farbführenden Flächen abgespeichert ist. Über eine zyklische Auslesung des Speicherinhaltes mit der Steuereinrichtung wird in gleicher Weise die Strahlintensität bzw. die Schaltung der Strahlungsenergie gesteuert.In a further development of the invention, instead of such a sensor arrangement, an electronic memory can also be provided, in which the structure of the printed product, ie the distribution of ink-guiding and non-ink-guiding surfaces, is stored. Cyclic reading of the memory content with the control device is carried out in the same way Beam intensity or the switching of the radiation energy controlled.
Weiterbildungsgemäß kann die Strahlungseinrichtung mit Strahlungsquellen ausgerüstet sein, die unterschiedliche Wellenlängen erzeugen. Dies hat den Vorteil, daß eine Trocknung von Farben, die in unterschiedlichen UV-Bereichen aushärten, möglich ist. Je nach verwendeter Farbe werden die entsprechenden UV-Bereiche ausgewählt und die Strahlungseinrichtung mit der entsprechenden Wellenlänge aktiviert.According to a further development, the radiation device can be equipped with radiation sources that generate different wavelengths. This has the advantage that it is possible to dry inks that harden in different UV ranges. Depending on the color used, the corresponding UV ranges are selected and the radiation device is activated with the corresponding wavelength.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels näher erläutert.The invention is explained in more detail below using an exemplary embodiment.
Alle in den Zeichnungen und der Beschreibung erwähnten neuen Merkmale sind erfindungswesentlich auch wenn sie nicht in den Ansprüchen enthalten sind.All the new features mentioned in the drawings and the description are essential to the invention, even if they are not included in the claims.
Es zeigt:
- Figur 1
- eine Bogendruckmaschine mit einer Trocknungseinrichtung,
Figur 2- die Anordnung eines Glasfaserkabels oberhalb eines zu trocknenden Druckproduktes.
- Figure 1
- a sheet-fed printing machine with a drying device,
- Figure 2
- the arrangement of a fiber optic cable above a print product to be dried.
Die schematische Darstellung einer Druckmaschine 1 gemäß Figur 1 zeigt eine Bogenoffsetdruckmaschine mit einem Bogenanleger 2, vier Druckwerken 3,4,5,6 und einem Bogenausleger 7. Der Antrieb 8 der Druckmaschine ist ein Elektromotor 9. Zwischen den einzelnen Druckwerken befinden sich jeweils Umführtrommeln 10,11,12, welche die Bögen von einem zum nächsten Druckwerk befördern. Der Bogentransport erfolgt längs des Transportweges 21 (Fig. 2). Während des Transports eines Druckbogens 19 durch die Übergabetrommeln zeigt die bedruckte Seite des Bogens nach außen, so daß hier die Möglichkeit besteht, diese frisch bedruckte Oberfläche an einer Trocknungseinrichtung vorbeizuführen. Eine geeignete Trocknungseinrichtung weist mehrere Komponenten auf. Eine erste Komponente ist eine Einrichtung zur Erzeugung einer Strahlungsenergie, die aus einer Laserstrahleinrichtung 13 besteht. Eine solche Laserstrahleinrichtung enthält eine elektronische Ansteuereinheit 14 und ein Laserrohr 15. Diese Laserstrahleinrichtung ist beispielsweise bekannt aus "Lambda Physik Laserstrahltechnik", Informationsschrift der Firma Lambda Physiks GmbH, Göttingen, BRD.The schematic representation of a printing press 1 according to FIG. 1 shows a sheet-fed offset printing press with a
Der von dem Laserrohr erzeugte Laserstrahl wird in ein Lichtleitfaserkabel 16,17, welches beispielsweise aus einem Bündel von Lichtleitfasern besteht, als weitere Komponente eingespeist. Die gesamte Laserstrahleinrichtung 13 ist außerhalb der Druckmaschine in einem geeignetem Gehäuse angeordnet. Die einzige Verbindung zwischen der Laserstrahleinrichtung und der Druckmaschine besteht über die Lichtleitfaserkabel 16,17. Die Enden des Lichtleitfaserkabels 16 sind an die Übergabetrommeln der einzelnen Druckwerke herangeführt und enden kurz oberhalb der Mantelfläche dieser Übergabetrommeln. Die Enden des Lichtleitfaserkabels 17 sind zu einer Kettenauslage 18, welche die bedruckten Bogen zu der Bogenauslage 7 transportiert. Im Bereich der Kettenauslage erfolgt eine abschließende beidseitige Trocknung der Druckbögen. Außerdem erfolgt die Trocknung der von dem Druckwerk 6 aufgebrachten Farbe, bzw. Lackschicht.The laser beam generated by the laser tube is fed into an
Eine Ausgestaltung des Endes eines Lichtleifaserkabels 16 ist in Figur 2 näher dargestellt. Auf der Übergabetrommel 12 befindet sich ein Druckbogen 19. Dieser wird mittels Greifer 20 an seinem Vorderende festgehalten und längs des Transportweges 21 transportiert. Oberhalb der Übergabetrommel 12 befindet sich an einer Traverse 22 angeordnet, das Ende des Lichtleifaserkabels 16. Wie aus der Figur ersichtlich, ist das Lichtleitfaserkabel 16 aufgesplittet, d.h. die einzelnen Fasern des Kabels sind so angeordnet, daß sie eine, quer zur Transportrichtung des Bogens verlaufende Linie, bilden. Der an den Enden des Lichtleitfaserkabels 16 austretende Laserstrahl trifft nahezu senkrecht auf die Bogenoberfläche auf.An embodiment of the end of an
Bei einer entsprechend hohen Anzahl von einzelnen Lichtleifasern besteht auch die Möglichkeit, mehrerer Lichtleitfaserreihen hintereinander anzuordnen. Damit wird eine längere Bestrahlungsdauer des Bogens während seiner Transportbewegung erzielt und somit bei sehr hohen Transportgeschwindigkeiten ein sicheres Aushärten der Farbe gewährleistet.With a correspondingly high number of individual optical fibers, it is also possible to arrange several rows of optical fibers one behind the other. This results in a longer irradiation time of the sheet during its transport movement and thus ensures that the ink cures reliably at very high transport speeds.
Anstelle eines einzelnen Laserrohrs 15, wie in Figur 1 gezeigt, können auch mehrere Laserrohre angeordnet sein, wobei jedes einen Laserstrahl bestimmter Wellenlänge erzeugt. Die Laserstrahlen unterschiedlicher Wellenlängen werden über getrennte oder ein gemeinsames Lichtleitfaserkabel zu den einzelnen Druckwerken geführt. Durch diesen Mehrfachlaser wird jede bedruckte Farbe entsprechend ihrem Absorptionsverhalten und ihrer Härtungseigenschaften optimal gehärtet.Instead of a
Zur Erzeugung des Laserstrahls kann auch ein sogenannter UV-Excimer-Laser angewendet werden. Bei solchen UV-Strahlern wird durch eine elektrische Entladung unter bestimmten Entladungsbedingungen Excimere gebildet. Dieses sind Molekülkomplexe z.B. Xe₂, die beim Zerfall UV-Strahlung abgeben. Auch hier besteht die Möglichkeit, für jeden gewünschten Anwendungsfall einen UV-Strahler einzusetzen der in einem bestimmten, einen optimalen Trocknungsprozeß gewährleistenden, Wellenlängenbereich arbeitet.A so-called UV excimer laser can also be used to generate the laser beam. In such UV lamps, excimers are formed by an electrical discharge under certain discharge conditions. These are molecular complexes such as Xe₂, which emit UV radiation when decaying. Here, too, there is the possibility of using a UV lamp for each desired application, which works in a specific wavelength range which ensures an optimal drying process.
- 11
- DruckmaschinePrinting press
- 22nd
- BogenanlegerSheet feeder
- 33rd
- DruckwerkPrinting unit
- 44th
- DruckwerkPrinting unit
- 55
- DruckwerkPrinting unit
- 66
- DruckwerkPrinting unit
- 77
- BogenauslegerSheet boom
- 88th
- Antriebdrive
- 99
- Motorengine
- 1010th
- ÜbergabetrommelTransfer drum
- 1111
- ÜbergabetrommelTransfer drum
- 1212
- ÜbergabetrommelTransfer drum
- 1313
- LaserstrahleinrichtungLaser beam device
- 1414
- AnsteuereinheitControl unit
- 1515
- LaserrohrLaser tube
- 1616
- Lichtleitfaserkabel (Faserbündel)Optical fiber cable (fiber bundle)
- 1717th
- Lichtleitfaserkabel (Faserbündel)Optical fiber cable (fiber bundle)
- 1818th
- KettenauslegerChain boom
- 1919th
- Druckprodukt / DruckbogenPrinted product / printed sheet
- 2020th
- GreiferGripper
- 2121
- TransportwegTransport route
- 2222
- Traversetraverse
Claims (9)
- Apparatus for drying printed products (19) in a printing machine (1), comprising a radiation device (13) for generating radiation energy, the radiation energy being transmitted to the surface of the printed products (19) and impinging simultaneously over a width of the surface of the printed products (19), and a transporting device being provided for moving the printed products (19) along a prescribed path, characterized in that the radiation device (13) is arranged outside the printing machine (1) and in that, as transmitting means, an optical-fibre cable (16, 17) is provided, into which the radiation device (13) feeds the radiation energy.
- Apparatus for drying printed products (19) in a printing machine (1), comprising a radiation device (13) for generating radiation energy, the radiation energy being transmitted to the surface of the printed products (19) and impinging simultaneously over a width of the surface of the printed products (19), and a transporting device being provided for moving the printed products (19) along a prescribed path, characterised in that the radiation device (13) is arranged outside the printing machine and in that, as transmitting means, at least one gas-filled tube is provided, into which the radiation device (13) feeds the radiation energy.
- Apparatus according to Claim 1 or 2, characterized in that the transmitting means is designed linearly at its end facing the surface of the printed products and ends above the printed products.
- Apparatus according to Claim 1 or 2, characterised in that the transmitting means has at its end facing the surface of the printed products an optical beam-splitter device, which guides the radiation energy linearly onto the surface of the printed products (19).
- Apparatus according to one of the preceding claims, characterised in that the radiation is a laser beam which has a wavelength which lies in the UV range.
- Apparatus according to Claim 2, characterised in that the tube has an inner coating reflecting the radiation energy.
- Apparatus according to one or more of the preceding claims, characterised in that a sensor arrangement is provided, which senses the structure of the ink application on the printed product (19), in that furthermore a control device (14) is provided, to which the sensed signals are fed, and in that the control device (14) controls the beam intensity according to the structure of the ink application.
- Apparatus according to one or more of the preceding Claims 1 to 7, characterised in that an electronic memory is provided, in which the structure of the ink application is stored, and in that a control device (14) is provided, to which the memory values are fed, and which controls the beam intensity according to the stored ink application structure.
- Apparatus according to one of the preceding claims, characterised in that the radiation device (13) generates radiation of differing wavelength and in that the radiation can be selected according to the ink to be dried.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3828753A DE3828753C2 (en) | 1988-08-25 | 1988-08-25 | Device for drying printed products in a printing press |
| DE3828753 | 1988-08-25 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0355473A2 EP0355473A2 (en) | 1990-02-28 |
| EP0355473A3 EP0355473A3 (en) | 1990-10-24 |
| EP0355473B1 true EP0355473B1 (en) | 1993-10-06 |
Family
ID=6361514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89113943A Expired - Lifetime EP0355473B1 (en) | 1988-08-25 | 1989-07-28 | Device for drying printed products in a printing press |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US4991506A (en) |
| EP (1) | EP0355473B1 (en) |
| JP (1) | JPH07376B2 (en) |
| DE (1) | DE3828753C2 (en) |
Families Citing this family (53)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3901165A1 (en) * | 1989-01-17 | 1990-08-02 | Heidelberger Druckmasch Ag | DEVICE FOR DRYING COLORS ON PAPER |
| JPH03134249A (en) * | 1989-10-18 | 1991-06-07 | Fuji Heavy Ind Ltd | Combustion condition detecting device and ignition timing control device for engine |
| DE4010191C2 (en) * | 1990-03-30 | 1994-10-13 | Heidelberger Druckmasch Ag | Emitter device for drying and / or curing ink and / or lacquer layers on print media |
| DE4229352A1 (en) * | 1992-09-07 | 1994-04-14 | Bhs Bayerische Berg | Printing press |
| US5505994A (en) * | 1994-03-16 | 1996-04-09 | Qst Industries, Inc. | Fabric-handling equipment |
| US5634401A (en) * | 1995-04-25 | 1997-06-03 | Electric City Printing Company | Printing press powder removal system |
| DE29507173U1 (en) * | 1995-05-03 | 1995-07-27 | MAN Roland Druckmaschinen AG, 63075 Offenbach | Dryer in the delivery of a sheet-fed rotary printing press |
| US5960713A (en) * | 1995-05-04 | 1999-10-05 | Howard W. DeMoore | Retractable printing-coating unit operable on the plate and blanket cylinders simultaneously from the dampener side of the first printing unit or any consecutive printing unit or any rotary offset printing press |
| US6435086B1 (en) * | 1995-05-04 | 2002-08-20 | Howard W. DeMoore | Retractable inking/coating apparatus having ferris movement between printing units |
| US5727472A (en) * | 1995-07-25 | 1998-03-17 | Burgio; Joseph Thomas | Apparatus and method for drying sheets printed on a multi-stand press |
| US5832833A (en) * | 1995-07-25 | 1998-11-10 | Burgio; Joseph Thomas | Apparatus and method for drying a substrate printed on a multi-stand offset press |
| US5630363A (en) * | 1995-08-14 | 1997-05-20 | Williamson Printing Corporation | Combined lithographic/flexographic printing apparatus and process |
| JP3032279U (en) * | 1996-06-10 | 1996-12-17 | 株式会社ヨシダ | Injection needle and its storage case |
| DE19651406C1 (en) * | 1996-12-11 | 1998-06-10 | Roland Man Druckmasch | Dryer unit in a printing press |
| US5966836A (en) * | 1997-04-11 | 1999-10-19 | Howard W. DeMoore | Infrared heating apparatus and method for a printing press |
| JP2997924B2 (en) * | 1997-11-26 | 2000-01-11 | 株式会社東京機械製作所 | Tower type multi-color printing device |
| US6078713A (en) * | 1998-06-08 | 2000-06-20 | Uv Technology, Inc. | Beam delivery system for curing of photo initiated inks |
| DE19855940A1 (en) | 1998-12-04 | 2000-06-08 | Voith Sulzer Papiertech Patent | Fibrous web drying |
| US6272986B1 (en) | 1999-10-15 | 2001-08-14 | Howard W. DeMoore | Retractable impression cylinder inking/coating apparatus having ferris movement between printing units |
| DE10047394A1 (en) * | 1999-10-15 | 2001-04-19 | Heidelberger Druckmasch Ag | Modular printing machine system satellite system of print cylinders and a second printer with one zone-less printing device for uniform dosage of ink |
| DE20006483U1 (en) * | 2000-04-07 | 2000-07-20 | Roland Man Druckmasch | Control for the dryer of a printing machine |
| JP4421066B2 (en) † | 2000-04-07 | 2010-02-24 | 株式会社小森コーポレーション | Double-sided printing machine quality inspection device |
| US6877247B1 (en) | 2000-08-25 | 2005-04-12 | Demoore Howard W. | Power saving automatic zoned dryer apparatus and method |
| DE10109847A1 (en) † | 2001-03-01 | 2002-09-19 | Adphos Advanced Photonics Tech | Method for producing a coating on a quasi-endlessly conveyed material belt |
| EP1302735B1 (en) | 2001-10-10 | 2014-01-01 | Heidelberger Druckmaschinen Aktiengesellschaft | Apparatus and process for supplying radiation energy onto printing material in a planographic printing machine |
| DE10234076A1 (en) * | 2001-10-10 | 2003-04-24 | Heidelberger Druckmasch Ag | Device and method for supplying radiation energy to a printing material in a planographic printing press |
| US7097297B2 (en) * | 2002-10-23 | 2006-08-29 | Konica Minolta Holdings Inc. | Ink jet printer, and image printing apparatus having the printer |
| JP4269672B2 (en) * | 2002-12-12 | 2009-05-27 | コニカミノルタホールディングス株式会社 | Inkjet printer |
| JP2004203025A (en) * | 2002-12-12 | 2004-07-22 | Konica Minolta Holdings Inc | Image recording apparatus |
| DE10311219A1 (en) * | 2003-03-14 | 2004-09-30 | Werner Kammann Maschinenfabrik Gmbh | Method and device for printing on a web |
| DE10316471A1 (en) * | 2003-04-09 | 2004-10-28 | Heidelberger Druckmaschinen Ag | Process for drying an ink on a printing substrate and printing unit, suitable for carrying out the process |
| DE10316472A1 (en) * | 2003-04-09 | 2004-10-28 | Heidelberger Druckmaschinen Ag | Process for drying an ink on a printing substrate in a printing press and printing press |
| DE102004046750A1 (en) * | 2003-10-14 | 2005-06-09 | Houben, Alexander, Dipl.-Ing. | Surface drying method for films or materials applied to surfaces uses a laser which dries only specifically selected areas |
| DE102004011347A1 (en) | 2004-03-05 | 2005-09-29 | Basf Ag | Printing inks for offset and / or high-pressure printing with NIR absorbers as well as NIR absorbers soluble in offset and / or high-pressure inks |
| DE102004020454A1 (en) | 2004-04-27 | 2005-11-24 | Heidelberger Druckmaschinen Ag | Device for supplying radiant energy to a substrate |
| JP4658723B2 (en) * | 2005-07-14 | 2011-03-23 | 株式会社小森コーポレーション | Printing machine or coating machine |
| JP2008132723A (en) * | 2006-11-29 | 2008-06-12 | Komori Corp | Liquid transfer apparatus |
| JP2008142983A (en) * | 2006-12-08 | 2008-06-26 | Tohoku Ricoh Co Ltd | Stencil printing equipment and ultraviolet fixation device |
| EP1992486B1 (en) * | 2007-05-15 | 2012-10-03 | Komori Corporation | Liquid curing apparatus for liquid transfer device |
| DE102007058957A1 (en) * | 2007-12-07 | 2009-06-10 | Heidelberger Druckmaschinen Ag | Process for drying printed material |
| JP2009184211A (en) * | 2008-02-06 | 2009-08-20 | Ryobi Ltd | Dryer for printing machine |
| JP2009208463A (en) * | 2008-02-06 | 2009-09-17 | Ryobi Ltd | Printing method of printing machine, and printing machine |
| US8240841B2 (en) * | 2009-01-03 | 2012-08-14 | David M Caracciolo | Pulse drying system |
| JP5505222B2 (en) * | 2010-09-15 | 2014-05-28 | セイコーエプソン株式会社 | Recording device |
| US20130284946A1 (en) | 2010-11-02 | 2013-10-31 | Kba-Notasys Sa | Device for irradiating substrate material in the form of a sheet or web and uses thereof |
| DE102012017996A1 (en) | 2012-09-12 | 2012-11-29 | Heidelberger Druckmaschinen Ag | Offset ink system, useful in a printing process for laser drying printed products, comprises multicolored inks comprising yellow, magenta and cyan colors, and a black ink, where each ink comprises a colorant and a solvent |
| CN103171273A (en) * | 2013-03-27 | 2013-06-26 | 吴江市金平华纺织有限公司 | Shell fabric drying greenhouse |
| DE102013009135A1 (en) | 2013-05-31 | 2014-12-04 | Heidelberger Druckmaschinen Ag | NIR-crosslinkable printing ink |
| DE102016204547A1 (en) | 2016-03-18 | 2017-09-21 | Koenig & Bauer Ag | Method for configuring a drying device in a printing machine and a printing machine |
| DE102018102527A1 (en) | 2018-02-05 | 2019-08-08 | Ist Metz Gmbh | Device for irradiating objects |
| US10596832B2 (en) | 2018-05-24 | 2020-03-24 | Xerox Corporation | Printer and dryer for drying images on coated substrates in aqueous ink printers |
| JP7458744B2 (en) * | 2019-10-31 | 2024-04-01 | 第一実業ビスウィル株式会社 | printing device |
| US11624147B1 (en) | 2022-06-21 | 2023-04-11 | Createme Technologies Llc. | Drying and curing heating systems |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1811303C3 (en) * | 1968-11-27 | 1978-06-15 | Canadian Patents And Development Ltd., Ottawa | Device for drying the gluing of stacks of paper sheets such as sets of forms by means of microwaves |
| DE2145988A1 (en) * | 1971-09-15 | 1973-03-22 | Wiederhold Fa Hermann | HIGH FREQUENCY DRYERS |
| CH576869A5 (en) * | 1973-05-11 | 1976-06-30 | Mohn Reinhard Mohndruck Ohg | |
| DE2323792B2 (en) * | 1973-05-11 | 1977-11-24 | Reinhard Mohn oHG, 4830 Gütersloh | DEVICE FOR DRYING PAINT, VARNISH AND ADHESIVES ON CARDBOARD, PAPER, PLASTIC OR SHEET METAL, IN PARTICULAR FOR INSTALLATION IN PRINTING MACHINES |
| US4189630A (en) * | 1976-12-20 | 1980-02-19 | Ebert Edward A | Method of heating deformable articles on a support of verticle fibers |
| JPS53132357A (en) * | 1977-04-25 | 1978-11-18 | Agency Of Ind Science & Technol | Light guide |
| US4271347A (en) * | 1978-10-18 | 1981-06-02 | The United States Of America As Represented By The Secretary Of The Treasury | Method and apparatus for accelerating chemical reactions using a spread beam deflector with single or multiple reflectors |
| US4297000A (en) * | 1979-01-11 | 1981-10-27 | Fries James E | Solar lighting system |
| JPS5826411B2 (en) * | 1980-01-25 | 1983-06-02 | 新日本製鐵株式会社 | Method and device for improving properties of electrical steel sheets |
| JPS59133058A (en) * | 1983-01-21 | 1984-07-31 | Nippon Insatsu Seihon Shiko Kikai Kougiyoukai | Ink dryer for printed matter |
| US4799361A (en) * | 1983-08-23 | 1989-01-24 | Board Of Regents, The University Of Texas System | Method for cryopreparing biological tissue for ultrastructural analysis |
| JPS6223757A (en) * | 1985-06-26 | 1987-01-31 | Komori Printing Mach Co Ltd | Dryer for printed object |
| DE3641949C1 (en) * | 1986-12-09 | 1988-05-26 | Kugelfischer G Schaefer & Co | Device for evaluating radio photoluminescent glasses |
| US4727655A (en) * | 1987-02-02 | 1988-03-01 | Amjo Infra Red Dryers, Inc. | Heat lamp assembly with air duct |
-
1988
- 1988-08-25 DE DE3828753A patent/DE3828753C2/en not_active Expired - Fee Related
-
1989
- 1989-07-28 EP EP89113943A patent/EP0355473B1/en not_active Expired - Lifetime
- 1989-08-25 JP JP1217650A patent/JPH07376B2/en not_active Expired - Lifetime
- 1989-08-25 US US07/398,631 patent/US4991506A/en not_active Expired - Lifetime
-
1990
- 1990-12-27 US US07/634,692 patent/US5115741A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0355473A2 (en) | 1990-02-28 |
| JPH02167748A (en) | 1990-06-28 |
| EP0355473A3 (en) | 1990-10-24 |
| US4991506A (en) | 1991-02-12 |
| DE3828753A1 (en) | 1990-03-08 |
| DE3828753C2 (en) | 1994-05-19 |
| US5115741A (en) | 1992-05-26 |
| JPH07376B2 (en) | 1995-01-11 |
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