EP1211067B1 - Method for creating prints with plastic appearance in offset printing machines - Google Patents

Method for creating prints with plastic appearance in offset printing machines Download PDF

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Publication number
EP1211067B1
EP1211067B1 EP01125590A EP01125590A EP1211067B1 EP 1211067 B1 EP1211067 B1 EP 1211067B1 EP 01125590 A EP01125590 A EP 01125590A EP 01125590 A EP01125590 A EP 01125590A EP 1211067 B1 EP1211067 B1 EP 1211067B1
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EP
European Patent Office
Prior art keywords
offset printing
printing machines
printed image
printing
lacquer
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Expired - Lifetime
Application number
EP01125590A
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German (de)
French (fr)
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EP1211067A2 (en
EP1211067A3 (en
Inventor
Jürgen Veil
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Koenig and Bauer AG
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Koenig and Bauer AG
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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
    • B41F23/08—Print finishing devices, e.g. for glossing prints

Definitions

  • the invention relates to a method for producing plastically acting prints on offset printing presses, in which the plasticity of the prints is achieved by the gloss level of the printed image components to be highlighted is significantly increased.
  • the object of the invention is to develop a method for producing plastically acting prints, by which the hitherto customary screen printing process can be replaced in some areas by the more economical offset printing process.
  • the effect should be exploited that can be generated by significantly different degrees of gloss, a plastically-acting print image.
  • the invention has the advantage that print images can now be produced with an offset printing process which have optically exposed contours with a low use of material.
  • this sheet-fed offset printing machine consists of several, arranged in series printing units 31 to 34.
  • four printing units 31 to 34 are exemplified, wherein at least two printing units are required to carry out the method according to the invention.
  • the printing units 31 to 34, a feeder 1 is arranged upstream.
  • the structure and function of the investor 1 are known, so that it need not be discussed in detail here.
  • the printing units 31 to 34 each consist of a counter-pressure cylinder 21 to 24, one plate cylinder 5 and one blanket cylinder 6 (plate cylinder 5 and blanket cylinder 6 are indicated in the figure only in the printing unit 31).
  • the sheet travel direction is indicated by an arrow. Recognizable are further enclosed by two counter-pressure cylinders 21 to 25 sheet guide cylinder 71 to 74, which can also be designed as a turning drum at an insertable in perfecting printing press.
  • Back-pressure cylinders 21 to 24 and sheet-guiding cylinders 71 to 74 are arc-guiding cylinders of double-large diameter.
  • the colorant and dampening units belonging to each printing unit 31 to 34 are not shown here.
  • the printing units 31 and 32 shown here are provided for printing a color system which contains inks with radiation-drying, UV-drying constituents according to the
  • the printing units 33 and 34 are provided for printing other colors containing no UV-drying ingredients, for example colors typical of offset printing, that is normal offset printing inks for normal normal drying jobs.
  • the printing unit 32 is associated with a dryer 111.
  • This dryer 111 is selected according to the color system to be dried, so that at this point a UV dryer is used.
  • a coating tower 4 is arranged in the direction of sheet travel after the printing units 31 to 34. This consists of the impression cylinder 25, the paint form cylinder 8 is assigned. On the paint form cylinder 8, a paint plate 81 is clamped. The coater tower 8 is used to coat the printed image with a lacquer layer, which is also radiation-drying here.
  • the paint form cylinder 8 and the paint plate 81 is assigned here an anilox roller 9.
  • an anilox roller 9 To paint supply this anilox roller 8 a chamber doctor blade 10 is employed.
  • the coating tower 4 is further associated with a dryer 112.
  • a display 12 is provided.
  • the structure and function of the display 12 are known, so that will not be discussed further here.
  • the printed sheet provided in the feeder 1 is picked up by means not described here in detail and placed on the sheet path.
  • the color of a color system is applied over the blanket cylinder 6, which proportionally contains a curing under ultraviolet radiation color.
  • Such colors are referred to as hybrid colors. It is also possible to use pure UV inks at this point.
  • Color systems are here summarized the colors that have substantially the same processing properties.
  • the drying of this ink layer takes place through the dryer 111 before the printing sheet is transferred to the following printing units 33 and 34.
  • the print sheet is printed with the colors of another color system, for example with a color system consisting of colors typical for offset printing.
  • paint is applied over the whole surface by the paint plate 81.
  • This lacquer has the property that it interacts differently with the color systems physically and / or chemically and thereby divergently influences the gloss level of the color layer.
  • a colorless lacquer is used, which cures as well as the hybrid colors under UV light.
  • the color layer which represents the printed image components to be highlighted, appears therewith high gloss, while the color layer, which is formed by the colors typical for offset printing, but dull acts.
  • the gloss level is inversely proportional to the absorption capacity of the paint system to the paint, wherein in paint layers with paint systems lower resorption more paint remains on the surface and color layers of higher Resorptions sparkle a higher proportion of the color layer is added.
  • the gloss-determining constituents of the lacquer are absorbed by the color layer.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Methods (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Laser Beam Printer (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

A conventional printing machine, consisting of at least two printing turrets (31-34) with at least one following arrangement doping unit for applying a final finishing layer. The printing turrets are provided for the squeezing of at least two ink systems, deviating from each other, concerning their absorption ability for the final doping layer. One of these ink systems is provided for the printing of significant prominent making printed image components. Optional driers (111) are assigned to the printing mechanisms (31-34) and for the application of the final doping layer, a doping unit (4) is arranged following the printing mechanism.

Description

Die Erfindung betrifft ein Verfahren zum Erzeugen plastisch wirkender Drucke auf Offsetdruckmaschinen, bei dem die Plastizität der Drucke erzielt wird, indem der Glanzgrad der hervorzuhebenden Druckbild-Komponenten signifikant erhöht wird.The invention relates to a method for producing plastically acting prints on offset printing presses, in which the plasticity of the prints is achieved by the gloss level of the printed image components to be highlighted is significantly increased.

Zum Erzeugen plastisch wirkender Drucke werden allgemein Durchdruckverfahren angewendet. Eines dieser Verfahren ist das Siebdruckverfahren. Bei diesem Verfahren werden die Farben durch ein feinmaschiges Sieb auf den Bedruckstoff gestrichen, wobei die nicht druckenden Stellen durch eine Schablone verschlossen sind. Damit ist an den hervorzuhebenden Druckbildstellen ein verstärkter Farbauftrag möglich, so dass ein plastisch wirkendes Erscheinungsbild erzielt werden kann.For the production of plastically acting prints, generally throughprinting methods are used. One of these methods is the screen printing process. In this method, the colors are painted through a fine mesh screen on the substrate, the non-printing areas are closed by a template. For a stronger application of paint is possible at the emphasized print image areas, so that a visually-appearing appearance can be achieved.

Dieses Verfahren ist unproduktiv und durch den hohen Farbverbrauch auch unwirtschaftlich.This process is unproductive and uneconomical due to the high color consumption.

Aus der DE 36 10 204 A1 ist ein Verfahren zum Schutz von bedrukten, beschrifteten oder anderweitig mit Mustern versehenen Papiermaterialen beschrieben. Derartige Objekte werden ganzflächig mit einer Schicht aus einem transparenten Lack, Kunstharz oder härtbaren Monomer überzogen, die auch durch UV- Strahlung härtbar sind. Diese Schichten können hochglänzend bis matt sein. In der Regel sind die Überzüge transparent, können aber auch farbige Zusätze enthalten.From DE 36 10 204 A1 a method for the protection of printed, inscribed or otherwise provided with patterns paper materials is described. Such objects are coated over the entire surface with a layer of a transparent lacquer, synthetic resin or curable monomer, which are curable by UV radiation. These layers can be high glossy to matt. As a rule, the coatings are transparent, but may also contain colored additives.

Aus der US 5,165,967 ist ein Verfahren bekannt, bei dem ein unterschiedlicher Glanzeffekt zwischen dem Randbereich und einem zentralen Teil eines Druckbildes erzeugt wird. Das geschieht dadurch, dass zwei Farben verdruckt werden, die eine voneinander abweichende Trockenzeit aufweisen. Die Trockenzeit einer dieser Farben kann durch den Zusatz eines Firnis gestreckt werden. Der physikalische Effekt, der hierbei ausgenutzt wird, besteht in der vom Trockengrad abhängigen Beschaffenheit der Oberfläche (Reflexionseigenschaft) der Farbschicht im Moment des Lackauftrags. Dabei ist der zeitpunktgenaue Auftrag der Lacks entscheidend für den Erfolg.From US 5,165,967 a method is known in which a different gloss effect between the edge region and a central part of a printed image is generated. This is done by printing two colors that have a different drying time. The drying time of one of these colors can be extended by the addition of a varnish. The physical effect, which is exploited here, is the nature of the surface (reflection property) of the ink layer, which depends on the degree of dryness, at the moment of coating. The timely application of the lacquers is crucial for success.

Die Aufgabe der Erfindung besteht darin, ein Verfahren zum Erzeugen plastisch wirkender Drucke zu entwickeln, durch welches das bisher übliche Siebdruckverfahren in Teilbereichen durch das wirtschaftlichere Offsetdruckverfahren abgelöst werden kann. Dabei soll der Effekt ausgenutzt werden, dass sich durch signifikant unterschiedliche Glanzgrade ein plastisch wirkendes Druckbild erzeugen lässt.The object of the invention is to develop a method for producing plastically acting prints, by which the hitherto customary screen printing process can be replaced in some areas by the more economical offset printing process. In this case, the effect should be exploited that can be generated by significantly different degrees of gloss, a plastically-acting print image.

Erfindungsgemäß wird die Aufgabe durch die Merkmale des 1. Anspruchs gelöst.According to the invention the object is achieved by the features of the first claim.

Die Erfindung hat den Vorteil, dass nunmehr mit einem Offsetdruckverfahren Druckbilder erzeugt werden können, die optisch exponierte Konturen mit geringem Materialeinsatz aufweisen.The invention has the advantage that print images can now be produced with an offset printing process which have optically exposed contours with a low use of material.

Die Erfindung soll an einem Ausführungsbeispiel näher erläutert werden. Die dazugehörige Zeichnung zeigt eine Bogenoffsetdruckmaschine in Reihenbauweise.The invention will be explained in more detail using an exemplary embodiment. The accompanying drawing shows a sheet-fed offset printing machine in a row construction.

Wie aus der Figur ersichtlich, besteht diese Bogenoffsetdruckmaschine aus mehreren, in Reihe angeordneten Druckwerken 31 bis 34. Im Ausführungsbeispiel sind beispielhaft vier Druckwerke 31 bis 34 dargestellt, wobei zur Durchführung des erfindungsgemäßen Verfahrens mindestens zwei Druckwerke erforderlich sind.As can be seen from the figure, this sheet-fed offset printing machine consists of several, arranged in series printing units 31 to 34. In the exemplary embodiment four printing units 31 to 34 are exemplified, wherein at least two printing units are required to carry out the method according to the invention.

Den Druckwerken 31 bis 34 ist ein Anleger 1 vorgeordnet. Der Aufbau und die Funktion des Anlegers 1 sind bekannt, so dass hier nicht näher darauf eingegangen werden muss. Die Druckwerke 31 bis 34 bestehen aus je einem Gegendruckzylinder 21 bis 24, je einem Plattenzylinder 5 und je einem Gummizylinder 6 (Plattenzylinder 5 und Gummituchzylinder 6 sind in der Figur nur im Druckwerk 31 bezeichnet). Die Bogenlaufrichtung ist durch einen Pfeil gekennzeichnet. Erkennbar sind weiterhin die von je zwei Gegendruckzylindern 21 bis 25 eingeschlossenen Bogenführungsführungszylinder 71 bis 74, die bei einer im Schön- und Widerdruck einsetzbaren Druckmaschine auch als Wendetrommel ausgebildet sein können. Gegendruckzylinder 21 bis 24 und Bogenführungszylinder 71 bis 74 sind bogenführende Zylinder mit doppelt-großem Durchmesser. Die zu jedem Druckwerk 31 bis 34 gehörenden Farb- und Feuchtwerke sind hier nicht dargestellt. Die hier gezeigten Druckwerke 31 und 32 sind zum Verdrucken eines Farbsystems vorgesehen, das Farben mit strahlungstrocknenden erfindungsgemäß UV-trocknenden - Bestandteilen enthält.The printing units 31 to 34, a feeder 1 is arranged upstream. The structure and function of the investor 1 are known, so that it need not be discussed in detail here. The printing units 31 to 34 each consist of a counter-pressure cylinder 21 to 24, one plate cylinder 5 and one blanket cylinder 6 (plate cylinder 5 and blanket cylinder 6 are indicated in the figure only in the printing unit 31). The sheet travel direction is indicated by an arrow. Recognizable are further enclosed by two counter-pressure cylinders 21 to 25 sheet guide cylinder 71 to 74, which can also be designed as a turning drum at an insertable in perfecting printing press. Back-pressure cylinders 21 to 24 and sheet-guiding cylinders 71 to 74 are arc-guiding cylinders of double-large diameter. The colorant and dampening units belonging to each printing unit 31 to 34 are not shown here. The printing units 31 and 32 shown here are provided for printing a color system which contains inks with radiation-drying, UV-drying constituents according to the invention.

Die Druckwerke 33 und 34 sind zum Verdrucken anderer, keine UV-trocknende Bestandteile enthaltender Farben vorgesehen, zum Beispiel von Farben, die für den Offsetdruck typisch sind, also normale Druckfarben für den Offsetdruck für normale Druckarbeiten mit normaler Trocknung.The printing units 33 and 34 are provided for printing other colors containing no UV-drying ingredients, for example colors typical of offset printing, that is normal offset printing inks for normal normal drying jobs.

Im Ausführungsbeispiel ist dem Druckwerk 32 ein Trockner 111 zugeordnet. Dieser Trockner 111 ist nach dem zu trocknenden Farbsystem gewählt, so dass an dieser Stelle ein UV-Trockner eingesetzt wird.In the exemplary embodiment, the printing unit 32 is associated with a dryer 111. This dryer 111 is selected according to the color system to be dried, so that at this point a UV dryer is used.

In Bogenlaufrichtung nach den Druckwerken 31 bis 34 ist ein Lackturm 4 angeordnet. Dieser besteht aus dem Gegendruckzylinder 25, dem Lackformzylinder 8 zugeordnet ist. Auf dem Lackformzylinder 8 ist eine Lackplatte 81 aufgespannt. Der Lackturm 8 dient zum Überziehen des Druckbildes mit einer Lackschicht, die hier ebenfalls strahlungstrocknend ist.In the direction of sheet travel after the printing units 31 to 34, a coating tower 4 is arranged. This consists of the impression cylinder 25, the paint form cylinder 8 is assigned. On the paint form cylinder 8, a paint plate 81 is clamped. The coater tower 8 is used to coat the printed image with a lacquer layer, which is also radiation-drying here.

Dem Lackformzylinder 8 bzw. der Lackplatte 81 ist hier eine Rasterwalze 9 zugeordnet. Zur Lackversorgung dieser Rasterwalze 8 ist eine Kammerrakel 10 angestellt. Dem Lackturm 4 ist weiterhin ein Trockner 112 zugeordnet.The paint form cylinder 8 and the paint plate 81 is assigned here an anilox roller 9. To paint supply this anilox roller 8 a chamber doctor blade 10 is employed. The coating tower 4 is further associated with a dryer 112.

Nach dem Lackturm 4 ist eine Auslage 12 vorgesehen. Der Aufbau und die Funktion der Auslage 12 sind bekannt, so dass hier nicht näher darauf eingegangen wird.After the coating tower 4 a display 12 is provided. The structure and function of the display 12 are known, so that will not be discussed further here.

Mit dieser Einrichtung wird folgendes erfindungsgemäße Verfahren realisiert:With this device, the following inventive method is realized:

Der im Anleger 1 bereitgestellte Druckbogen wird von hier nicht näher beschriebenen Einrichtungen gefasst und auf den Bogenweg gegeben. In den Druckwerken 31 bis 32 wird über den Gummituchzylinder 6 die Farbe eines Farbsystems aufgetragen, das anteilig eine unter ultravioletter Strahlung härtende Farbe enthält. Derartige Farben werden als Hybridfarben bezeichnet. Es ist auch möglich, an dieser Stelle reine UV-Farben einzusetzen.The printed sheet provided in the feeder 1 is picked up by means not described here in detail and placed on the sheet path. In the printing units 31 to 32, the color of a color system is applied over the blanket cylinder 6, which proportionally contains a curing under ultraviolet radiation color. Such colors are referred to as hybrid colors. It is also possible to use pure UV inks at this point.

Unter Farbsystemen werden hier die Farben zusammengefasst, die im Wesentlichen gleiche Verarbeitungseigenschaften aufweisen.Color systems are here summarized the colors that have substantially the same processing properties.

Anschließend erfolgt erfindungsgemäß das Trocknen dieser Farbschicht durch den Trockner 111, bevor der Druckbogen den folgenden Druckwerken 33 und 34 übergeben wird. Hier wird der Druckbogen mit den Farben eines anderen Farbsystems bedruckt, zum Beispiel mit einem Farbsystem, das aus für den Offsetdruck typischen Farben besteht.Subsequently, according to the invention, the drying of this ink layer takes place through the dryer 111 before the printing sheet is transferred to the following printing units 33 and 34. Here the print sheet is printed with the colors of another color system, for example with a color system consisting of colors typical for offset printing.

Abschließend wird im Lackturm 4 durch die Lackplatte 81 ganzflächig Lack aufgetragen. Dieser Lack hat die Eigenschaft, dass er mit den Farbsystemen unterschiedlich physikalisch und/oder chemisch zusammenwirkt und dadurch den Glanzgrad der Farbschicht divergierend beeinflusst. Im Ausführungsbeispiel wird ein farbloser Lack verwendet, der ebenso wie die Hybridfarben unter UV-Licht aushärtet. Dazu dient der Trockner 112, der hier als UV-Strahler ausgebildet ist. Die Farbschicht, welche die hervorzuhebenden Druckbild-Komponenten darstellt, erscheint damit hochglänzend, während die Farbschicht, die durch die für den Offsetdruck typischen Farben gebildet wird, hingegen stumpf wirkt.Finally, in the coating tower 4 paint is applied over the whole surface by the paint plate 81. This lacquer has the property that it interacts differently with the color systems physically and / or chemically and thereby divergently influences the gloss level of the color layer. In the exemplary embodiment, a colorless lacquer is used, which cures as well as the hybrid colors under UV light. The purpose of the dryer 112, which is designed here as a UV radiator. The color layer, which represents the printed image components to be highlighted, appears therewith high gloss, while the color layer, which is formed by the colors typical for offset printing, but dull acts.

Eine der möglichen Voraussetzung für den Eintritt des oben genannten Effektes ist, dass die Farbsysteme hinsichtlich ihrer Lack-Resorptionsfähigkeit voneinander abweichen. Dabei ist der Glanzgrad umgekehrt proportional zur Resorptionsfähigkeit des Farbsystems zum Lack, wobei bei Farbschichten mit Farbsystemen geringerer Resorptionsfähigkeit mehr Lack an deren Oberfläche verbleibt und bei Farbschichten aus Farbsystemen höherer Resorptionsfähigkeit ein höherer Anteil von der Farbschicht aufgenommen wird. Die glanzbestimmenden Bestandteile des Lackes werden von der Farbschicht aufgenommen.One of the possible prerequisites for the occurrence of the above-mentioned effect is that the color systems deviate from each other in terms of their paint absorbability. In this case, the gloss level is inversely proportional to the absorption capacity of the paint system to the paint, wherein in paint layers with paint systems lower resorption more paint remains on the surface and color layers of higher Resorptionsfähigkeit a higher proportion of the color layer is added. The gloss-determining constituents of the lacquer are absorbed by the color layer.

Aufstellung der verwendeten Bezugszeichen

Figure imgb0001
List of used reference numbers
Figure imgb0001

Claims (7)

  1. Method of producing plastically acting pressures on offset printing machines, wherein the plasticity of the pressures is achieved by a significantly increased degree of glaze of raised printed image components, in that
    - a printed image is produced on the printing material through application of an ink layer,
    - at least two different inking systems are used for producing the printed image and in that case
    - one of these inking systems is used for application of the raised printed image components, wherein this inking system contains constituents drying in ultraviolet light, and
    - subsequently a lacquer coating is applied over the whole area and
    - is dried, wherein
    - the drying is carried out proportionally under ultraviolet light.
  2. Method of producing plastically acting pressures on offset printing machines according to claim 1, characterised in that the inking system or the inking systems for the non-raised printed image components resorb the lacquer.
  3. Method of producing plastically acting pressures on offset printing machines according to claim 1, characterised in that the lacquer used is colourless.
  4. Method of producing plastically acting pressures on offset printing machines according to claim 1, characterised in that the inking system used for application of the raised printed image components consists of hybrid inks or of pure ultraviolet colours and the other inking system consists of normal printing inks, which do not contain ultraviolet constituents, for offset printing.
  5. Method of producing plastically acting pressures on offset printing machines according to claim 4, characterised in that the hybrid inks contain an ink proportionally hardening under radiation.
  6. Method of producing plastically acting pressures on offset printing machines according to claim 1, characterised in that the lacquer is hardened under the action of radiation.
  7. Method of producing plastically acting pressures on offset printing machines according to claim 1, characterised in that not only the hybrid inks, but also the lacquer are hardened under ultraviolet light.
EP01125590A 2000-11-16 2001-10-26 Method for creating prints with plastic appearance in offset printing machines Expired - Lifetime EP1211067B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10057643A DE10057643A1 (en) 2000-11-16 2000-11-16 Unit for producing plastic effective printing on offset printing presses with which plasticity of printing is attained, whilst degree of gloss of prominent made printed image components is significantly increased
DE10057643 2000-11-16

Publications (3)

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EP1211067A2 EP1211067A2 (en) 2002-06-05
EP1211067A3 EP1211067A3 (en) 2005-01-05
EP1211067B1 true EP1211067B1 (en) 2006-11-02

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10138863A1 (en) * 2001-08-08 2003-02-27 Koenig & Bauer Ag Method for manufacturing a blister pack e.g. for small product items, uses low-wax or wax-free color system
DE102005003839A1 (en) 2005-01-27 2006-08-03 Koenig & Bauer Ag security marking

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0343794A2 (en) * 1988-05-26 1989-11-29 Sakata Inkusu Kabushiki Kaisha Method for producing glossy printed matter.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2317372A (en) * 1940-12-26 1943-04-27 Interchem Corp Method of printing and composition useful therein
US3506467A (en) * 1966-12-12 1970-04-14 Francis S Ulrich Applying a protective film to unset printing ink on backing material
US4029831A (en) * 1975-06-19 1977-06-14 Masonite Corporation Method of making a multi-gloss panel
US4464423A (en) * 1981-03-27 1984-08-07 Tarkett Ab Method for forming dual gloss coating
DE3610204A1 (en) * 1986-03-26 1987-10-08 Rainer Dipl Ing Schorn Process for the protection of printed or inscribed paper materials or paper-like materials or those provided with patterns in another manner
US5165967A (en) * 1990-09-24 1992-11-24 Brown Printing Co., A Division Of Gruner & Jahr Publishing Co. Method for producing article with different gloss surfaces
DE29913379U1 (en) * 1999-07-30 1999-09-23 MAN Roland Druckmaschinen AG, 63075 Offenbach Device for dosing a liquid medium in a printing press

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0343794A2 (en) * 1988-05-26 1989-11-29 Sakata Inkusu Kabushiki Kaisha Method for producing glossy printed matter.

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DE20020797U1 (en) 2001-03-15
EP1211067A2 (en) 2002-06-05
DE50111351D1 (en) 2006-12-14
ATE344140T1 (en) 2006-11-15
DE10057643A1 (en) 2002-05-23
EP1211067A3 (en) 2005-01-05

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