EP2082876B1 - Printing unit of a printing press - Google Patents

Printing unit of a printing press Download PDF

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Publication number
EP2082876B1
EP2082876B1 EP08015631A EP08015631A EP2082876B1 EP 2082876 B1 EP2082876 B1 EP 2082876B1 EP 08015631 A EP08015631 A EP 08015631A EP 08015631 A EP08015631 A EP 08015631A EP 2082876 B1 EP2082876 B1 EP 2082876B1
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EP
European Patent Office
Prior art keywords
printing
unit
dampening
ink
axial direction
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Revoked
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EP08015631A
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German (de)
French (fr)
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EP2082876A1 (en
Inventor
Günter Koppelkamm
Ekkehard Krick
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Manroland AG
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Manroland AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing
    • B41F7/12—Rotary lithographic machines for offset printing using two cylinders one of which serves two functions, e.g. as a transfer and impression cylinder in perfecting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/32—Ducts, containers, or like supply devices for liquids

Definitions

  • the invention relates to a printing unit, in particular an offset printing unit, a printing machine, in particular a web-fed printing press, according to the preamble of claim 1.
  • a printing unit of a printing press has a forme cylinder, a transfer cylinder, an inking unit and a dampening unit. At least one printing plate is positioned on the forme cylinder, it being possible with the aid of the inking unit to apply printing ink and, with the aid of the dampening unit, fountain solution to the or each printing plate positioned on the forme cylinder.
  • the printing ink is transferred to a transfer cylinder, namely at least one transfer mold positioned on the transfer cylinder, wherein the transfer cylinder ultimately applies the printing ink to a printing material to be printed.
  • a printing unit is also referred to as an offset printing unit.
  • the forme cylinder is also referred to as a plate cylinder and the transfer cylinder as a rubber cylinder.
  • the inking unit of such a printing unit has a storage container for printing ink, which are assigned to a plurality of ink fountain key elements.
  • the Farbzonenstellelemente which are also referred to as a color pusher or color meter, are positioned next to each other in the axial direction, with the aid of the Farbzonenstellelemente for each ink zone each print page ink can be applied individually to an ink fountain roller downstream of the reservoir.
  • This inking roller is either a ductor roller or a lifting roller.
  • the dampening unit of such a printing unit has a reservoir for dampening solution, wherein the reservoir are associated with a plurality of apertures.
  • the apertures associated with the reservoir are positioned side by side in the axial direction, wherein the number of axially adjacent juxtaposed apertures of the dampening unit corresponds to the number of printed pages to be printed side by side on the substrate by means of the printing unit in the axial direction.
  • the dampening unit of the printing unit has a single diaphragm for each printing side to be printed side by side on the printing substrate, viewed in the axial direction.
  • inking units and dampening units are in EP 1 803 554 A1 and DE 911 2 926 U disclosed.
  • the present invention seeks to provide a novel, variable-format printing unit, in particular an offset printing unit, a printing press, in particular a web-fed printing press.
  • the number and the width of the ink zone positioning elements of the inking unit juxtaposed in the axial direction correspond to the number and the width of the dampening unit positioned adjacent to one another in the axial direction, so that on the one hand printing ink and, on the other hand dampening solution can be applied individually for each zone of each printing page.
  • the number and the width of the ink zone positioning elements of the inking unit juxtaposed in the axial direction correspond to the number and the width of the apertures of the dampening unit juxtaposed in the axial direction.
  • both ink and fountain solution for each ink zone can be applied individually to the or each placed on the form cylinder printing plate. Since the width of the Farbzonenstellelemente and thus the width of the aperture is usually in the order of 20 mm and 60 mm, preferably in the order of 40 mm, this ensures a format variability of the printing unit.
  • Fig. 1 shows a highly schematic representation of a printing unit 10 of a web press, in particular as a newspaper printing machine, formed printing press.
  • the printing unit has a forme cylinder 11, a transfer cylinder 12, an inking unit 13 and a dampening unit 14.
  • the printing unit 10 of Fig. 1 is used for printing a web-shaped substrate 15, wherein the printing material 15 is printed in the region of a printing nip, which is formed between the transfer cylinder 12 and a counter-pressure cylinder 16.
  • the counter-pressure cylinder 16 may be a transfer cylinder of an adjacent printing unit or else a satellite cylinder.
  • the inking unit 13 has a reservoir 17 for printing ink.
  • the reservoir 17 for printing ink are assigned a plurality of ink zone actuating elements 18 which, viewed in the axial direction of the printing unit 10, are positioned next to one another.
  • the Farbzonenstellelemente 18 are also referred to as a color slider or color meter, wherein the number of Farbzonenstellelemente 18 corresponds to the total number of color areas to be printed for all printed pages.
  • this means that the reservoir 17 is assigned sixteen ink zone setting elements 18 for four printed pages, each with four ink zones. It should again be noted that this number is purely exemplary nature.
  • the color zone setting elements 18 assigned to a printing side are framed in bold.
  • ink zone setting elements 18 for each color zone of each printing page, individual printing ink can be applied to an inking roller 19 arranged downstream of the storage container 17, wherein this inking roller 19 is a ductor roller or a lifting roller.
  • this inking roller 19 is a ductor roller or a lifting roller.
  • the ink is transported over at least one further inking roller 20 in the direction of at least one inking roller 21, wherein the or each inking roller 21 of the inking unit 13 rolls on the forme cylinder 11 and ultimately the ink for each ink zone each print page on the or each on the forme cylinder 11 positioned printing form transmits.
  • the dampening unit 14 of the printing unit 10 has a reservoir 22 for dampening solution.
  • the reservoir 22 for fountain solution is associated with a plurality of axially juxtaposed apertures 23 to apply dampening agent individually for each print side on a reservoir 22 downstream dampening roller 24.
  • the reservoir 22 downstream dampening roller 24 is preferably a dampening drive roller, wherein the dampening solution is transported from the dampening drive roller 24 via at least one further dampening roller 25 in the direction of at least one dampening roller 26 which rolls on the forme cylinder 11 and thus the dampening solution on the or each positioned on the forme cylinder 11 transfers printing form.
  • the number and the width of the ink zone actuating elements 18 of the inking unit 13 juxtaposed in the axial direction correspond to the number and the width of the apertures 23 of the dampening unit 14 juxtaposed in the axial direction.
  • the dampening unit 14 has sixteen apertures 23 in order to provide the dampening solution for each ink zone individually for the printed pages to be printed side by side on the substrate 15 in the axial direction, each comprising four ink zones. It should be pointed out once again that the number of print pages to be printed side by side in the axial direction as well as the number of ink zones per print page are of purely exemplary nature. That It could be provided at n juxtaposed pressure pages 4 x n diaphragms 23.
  • All panels 23 of the dampening unit 14 are individually controlled to open and close the same individually.
  • each pressure side a plurality of groups of apertures 23 are controllable together to jointly open and close the apertures of the respective groups.
  • the width of the Farbzonenstellelemente 18 and the width of the aperture 23 corresponds to the width of the ink zones, said width is preferably between 20 mm and 60 mm, in particular about 40 mm.
  • Actuators for adjusting the aperture 23 are preferably designed as electric motors to adjust the aperture 23 by an electric motor.
  • the printing unit according to the invention is particularly advantageous if printing material webs are to be printed with different printing material web formats.
  • changing formats of the printing material web and changing formats of the print pages to be printed axially next to one another on the printing substrate web can be taken into account.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Printing Methods (AREA)
  • Rotary Presses (AREA)

Abstract

The unit (10) has an inking unit (13) with a storage container (17) for a print substrate (15) to which ink zones adjusting elements (18) of the unit are attached to apply ink for ink zones of print pages on an inking unit roller (19). A dampening unit (14) includes a storage container (22) for damping medium to which covers (23) of the unit (14) are attached to apply the medium for the pages on a dampening unit roller (24). A number and width of the elements correspond to a number and width of the covers, so that the ink and the medium for the zones of each page are individually applied.

Description

Die Erfindung betrifft ein Druckwerk, insbesondere eine Offsetdruckwerk, einer Druckmaschine, insbesondere einer Rollendruckmaschine, nach dem Oberbegriff des Anspruchs 1.The invention relates to a printing unit, in particular an offset printing unit, a printing machine, in particular a web-fed printing press, according to the preamble of claim 1.

Ein Druckwerk einer Druckmaschine verfügt über einen Formzylinder, eine Übertragungszylinder, ein Farbwerk sowie ein Feuchtwerk. Auf dem Formzylinder ist mindestens eine Druckform positioniert, wobei mit Hilfe des Farbwerks Druckfarbe und mit Hilfe des Feuchtwerks Feuchtmittel auf die oder jede auf dem Formzylinder positionierte Druckform aufgetragen werden kann. Ausgehend vom Formzylinder wird die Druckfarbe auf einen Übertragungszylinder, nämlich mindestens eine auf dem Übertragungszylinder positionierte Übertragungsform übertragen, wobei der Übertragungszylinder letztendlich die Druckfarbe auf einen zu bedruckenden Bedruckstoff aufträgt. Ein derartiges Druckwerk wird auch als Offsetdruckwerk bezeichnet. Der Formzylinder wird auch als Plattenzylinder und der Übertragungszylinder auch als Gummizylinder bezeichnet. Mit einem solchen Druckwerk werden bei einer Rollendruckmaschine in Axialrichtung gesehen mehrere Druckseiten nebeneinander auf einen Bedruckstoff aufgetragen.A printing unit of a printing press has a forme cylinder, a transfer cylinder, an inking unit and a dampening unit. At least one printing plate is positioned on the forme cylinder, it being possible with the aid of the inking unit to apply printing ink and, with the aid of the dampening unit, fountain solution to the or each printing plate positioned on the forme cylinder. Starting from the forme cylinder, the printing ink is transferred to a transfer cylinder, namely at least one transfer mold positioned on the transfer cylinder, wherein the transfer cylinder ultimately applies the printing ink to a printing material to be printed. Such a printing unit is also referred to as an offset printing unit. The forme cylinder is also referred to as a plate cylinder and the transfer cylinder as a rubber cylinder. With such a printing unit, in the case of a web-fed printing press, several printed pages are applied next to one another on a printing substrate in the axial direction.

Das Farbwerk eines solchen Druckwerks verfügt über einen Vorratsbehälter für Druckfarbe, dem mehrere Farbzonenstellelemente zugeordnet sind. Die Farbzonenstellelemente, die auch als Farbschieber bzw. Farbmesser bezeichnet werden, sind in Axialrichtung nebeneinander positioniert, wobei mit Hilfe der Farbzonenstellelemente für jede Farbzone jeder Druckseite Druckfarbe individuell auf eine dem Vorratsbehälter nachgeordnete Farbwerkwalze aufgetragen werden kann. Bei dieser Farbwerkwalze handelt es sich entweder um eine Duktorwalze oder um eine Heberwalze.The inking unit of such a printing unit has a storage container for printing ink, which are assigned to a plurality of ink fountain key elements. The Farbzonenstellelemente, which are also referred to as a color pusher or color meter, are positioned next to each other in the axial direction, with the aid of the Farbzonenstellelemente for each ink zone each print page ink can be applied individually to an ink fountain roller downstream of the reservoir. This inking roller is either a ductor roller or a lifting roller.

Das Feuchtwerk eines solchen Druckwerks verfügt über einen Vorratsbehälter für Feuchtmittel, wobei dem Vorratsbehälter mehrere Blenden zugeordnet sind. Die dem Vorratsbehälter zugeordneten Blenden sind in Axialrichtung nebeneinander positioniert, wobei bei aus der Praxis bekannten Druckwerken die Anzahl der in Axialrichtung nebeneinander positionierten Blenden des Feuchtwerks der Anzahl der mit Hilfe des Druckwerks in Axialrichtung nebeneinander auf den Bedruckstoff zu druckenden Druckseiten entspricht. Bei aus der Praxis bekannten Druckwerken weist demnach das Feuchtwerk des Druckwerks für jede in Axialrichtung gesehen nebeneinander auf dem Bedruckstoff zu druckende Druckseite eine einzige Blende auf.The dampening unit of such a printing unit has a reservoir for dampening solution, wherein the reservoir are associated with a plurality of apertures. The apertures associated with the reservoir are positioned side by side in the axial direction, wherein the number of axially adjacent juxtaposed apertures of the dampening unit corresponds to the number of printed pages to be printed side by side on the substrate by means of the printing unit in the axial direction. In the case of printing units known from practice, therefore, the dampening unit of the printing unit has a single diaphragm for each printing side to be printed side by side on the printing substrate, viewed in the axial direction.

Farbwerke und Feuchtwerke sind zum Beispiel in EP 1 803 554 A1 und DE 911 2 926 U offenbart.For example, inking units and dampening units are in EP 1 803 554 A1 and DE 911 2 926 U disclosed.

Derartige aus der Praxis bekannte Druckwerke verfügen nur über eine unzureichende Formatvariabilität. Insbesondere bereitet dann, wenn sich das Bedruckstoffformat des zu bedruckenden Bedruckstoffs ändert, ein formatvariables Auftragung des Feuchtmittels auf die oder jede auf dem Formzylinder positionierte Druckform Schwierigkeiten.Such known from practice printing works only have an insufficient format variability. In particular, when the printing substrate format of the printing material to be printed changes, a format-variable application of the dampening solution to the or each printing form positioned on the forme cylinder presents difficulties.

Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein neuartiges, formatvariables Druckwerk, insbesondere eines Offsetdruckwerks, einer Druckmaschine, insbesondere einer Rollendruckmaschine, zu schaffen.On this basis, the present invention seeks to provide a novel, variable-format printing unit, in particular an offset printing unit, a printing press, in particular a web-fed printing press.

Diese Aufgabe wird durch ein Druckwerk gemäß Anspruch 1 gelöst. Erfindungsgemäß entspricht die Anzahl und die Breite der in Axialrichtung nebeneinander positionierten Farbzonenstellelemente des Farbwerks der Anzahl und der Breite der in Axialrichtung nebeneinander positionierten Blenden des Feuchtwerks, sodass einerseits Druckfarbe und andererseits Feuchtmittel für jede Zone jeder Druckseite individuell auftragbar ist.This object is achieved by a printing unit according to claim 1. According to the invention, the number and the width of the ink zone positioning elements of the inking unit juxtaposed in the axial direction correspond to the number and the width of the dampening unit positioned adjacent to one another in the axial direction, so that on the one hand printing ink and, on the other hand dampening solution can be applied individually for each zone of each printing page.

Beim erfindungsgemäßen Druckwerk entspricht die Anzahl und die Breite der in Axialrichtung nebeneinander positionierten Farbzonenstellelemente des Farbwerks der Anzahl und der Breite der in Axialrichtung nebeneinander positionierten Blenden des Feuchtwerks. Hierdurch kann sowohl Druckfarbe als auch Feuchtmittel für jede Farbzone individuell auf die oder jede auf dem Formzylinder positionierte Druckform aufgetragen werden. Da die Breite der Farbzonenstellelemente und damit die Breite der Blenden üblicherweise in der Größenordnung zwischen 20 mm und 60 mm, vorzugsweise in der Größenordnung von 40 mm, liegt, ist hierdurch eine Formatvariabilität des Druckwerks gewährleistet.In the printing unit according to the invention, the number and the width of the ink zone positioning elements of the inking unit juxtaposed in the axial direction correspond to the number and the width of the apertures of the dampening unit juxtaposed in the axial direction. As a result, both ink and fountain solution for each ink zone can be applied individually to the or each placed on the form cylinder printing plate. Since the width of the Farbzonenstellelemente and thus the width of the aperture is usually in the order of 20 mm and 60 mm, preferably in the order of 40 mm, this ensures a format variability of the printing unit.

Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ein Ausführungsbeispiel der Erfindung wird, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:

Fig. 1:
eine schematisierte Darstellung eines erfindungsgemäßen Druckwerks einer Druckmaschine.
Preferred embodiments of the invention will become apparent from the dependent claims and the description below. An embodiment of the invention will be described, without being limited thereto, with reference to the drawing. Showing:
Fig. 1:
a schematic representation of a printing unit according to the invention of a printing press.

Fig. 1 zeigt eine stark schematisierte Darstellung eines Druckwerks 10 einer als Rollendruckmaschine, insbesondere als Zeitungsdruckmaschine, ausgebildeten Druckmaschine. Das Druckwerk verfügt über einen Formzylinder 11, einen Übertragungszylinder 12, ein Farbwerk 13 sowie ein Feuchtwerk 14. Fig. 1 shows a highly schematic representation of a printing unit 10 of a web press, in particular as a newspaper printing machine, formed printing press. The printing unit has a forme cylinder 11, a transfer cylinder 12, an inking unit 13 and a dampening unit 14.

Das Druckwerk 10 der Fig. 1 dient dem Bedrucken eines bahnförmigen Bedruckstoffs 15, wobei der Bedruckstoff 15 im Bereich eines Druckspalts bedruckt wird, der zwischen dem Übertragungszylinder 12 und einem Gegendruckzylinder 16 ausgebildet ist. Bei dem Gegendruckzylinder 16 kann es sich um einen Übertragungszylinder eines benachbarten Druckwerks oder auch um einen Satellitenzylinder handeln.The printing unit 10 of Fig. 1 is used for printing a web-shaped substrate 15, wherein the printing material 15 is printed in the region of a printing nip, which is formed between the transfer cylinder 12 and a counter-pressure cylinder 16. The counter-pressure cylinder 16 may be a transfer cylinder of an adjacent printing unit or else a satellite cylinder.

Nachfolgend soll davon ausgegangen werden, dass mit dem erfindungsgemäßen Druckwerk 10 in Axialrichtung gesehen vier Druckseiten auf den Bedruckstoff 15 gedruckt werden soll, wobei jede Druckseite durch insgesamt vier Farbzonen gekennzeichnet ist. Es sei darauf hingewiesen, dass die Anzahl der in Axialrichtung nebeneinander auf den Bedruckstoff 15 zu druckenden Druckseiten sowie die Anzahl der Farbzonen je Druckseite rein exemplarischer Natur ist, d.h. es können auch eine andere Anzahl Farbzonen vorgesehen werden - wie z.B. n Farbzonen. Auf dem Formzylinder 11 ist mindestens eine Druckform positioniert. Mit Hilfe des Farbwerks 13 wird Druckfarbe und mit Hilfe des Feuchtwerks 14 Feuchtmittel auf die oder jede auf dem Formzylinder 11 positionierte Druckform aufgetragen.It will be assumed below that, with the printing unit 10 according to the invention, as seen in the axial direction, four printed pages are to be printed on the printing substrate 15, each printed page being characterized by a total of four ink zones. It should be pointed out that the number of printed pages to be printed next to one another in the axial direction on the printing substrate 15 and the number of ink zones per printing page are purely exemplary in nature. it is also possible to provide a different number of ink zones - e.g. n color zones. At least one printing plate is positioned on the forme cylinder 11. With the help of the inking unit 13 printing ink and with the help of the dampening unit 14 fountain solution is applied to the or each positioned on the forme cylinder 11 printing form.

Das Farbwerk 13 verfügt über einen Vorratsbehälter 17 für Druckfarbe. Dem Vorratsbehälter 17 für Druckfarbe sind mehrere Farbzonenstellelemente 18 zugeordnet, die in Axialrichtung des Druckwerks 10 gesehen nebeneinander positioniert sind. Die Farbzonenstellelemente 18 werden auch als Farbschieber bzw. Farbmesser bezeichnet, wobei die Anzahl der Farbzonenstellelemente 18 der Gesamtanzahl der für alle Druckseiten zu druckenden Farbzonen entspricht. Im gezeigten Ausführungsbeispiel bedeutet dies, dass dem Vorratsbehälter 17 sechszehn Farbzonenstellelemente 18 für vier Druckseiten mit jeweils vier Farbzonen zugeordnet sind. Es sei nochmals darauf hingewiesen, dass diese Anzahl rein exemplarischer Natur ist. In Fig. 1 sind die einer Druckseite zugeordneten Farbzonenstellelemente 18 fett umrahmt.The inking unit 13 has a reservoir 17 for printing ink. The reservoir 17 for printing ink are assigned a plurality of ink zone actuating elements 18 which, viewed in the axial direction of the printing unit 10, are positioned next to one another. The Farbzonenstellelemente 18 are also referred to as a color slider or color meter, wherein the number of Farbzonenstellelemente 18 corresponds to the total number of color areas to be printed for all printed pages. In the exemplary embodiment shown, this means that the reservoir 17 is assigned sixteen ink zone setting elements 18 for four printed pages, each with four ink zones. It should again be noted that this number is purely exemplary nature. In Fig. 1 For example, the color zone setting elements 18 assigned to a printing side are framed in bold.

Über die Farbzonenstellelemente 18 kann für jede Farbzone jeder Druckseite individuell Druckfarbe auf eine dem Vorratsbehälter 17 nachgeordnete Farbwerkwalze 19 aufgetragen werden, wobei es sich bei dieser Farbwerkwalze 19 um eine Duktorwalze oder eine Heberwalze handelt. Ausgehend von dieser Farbwerkwalze 19 wird die Druckfarbe über mindestens eine weitere Farbwerkwalze 20 in Richtung auf mindestens eine Farbauftragwalze 21 transportiert, wobei die oder jede Farbauftragwalze 21 des Farbwerks 13 auf dem Formzylinder 11 abrollt und letztendlich die Druckfarbe für jede Farbzone jeder Druckseite auf die oder jede auf dem Formzylinder 11 positionierte Druckform überträgt.By way of the ink zone setting elements 18, for each color zone of each printing page, individual printing ink can be applied to an inking roller 19 arranged downstream of the storage container 17, wherein this inking roller 19 is a ductor roller or a lifting roller. Starting from this inking roller 19, the ink is transported over at least one further inking roller 20 in the direction of at least one inking roller 21, wherein the or each inking roller 21 of the inking unit 13 rolls on the forme cylinder 11 and ultimately the ink for each ink zone each print page on the or each on the forme cylinder 11 positioned printing form transmits.

Das Feuchtwerk 14 des erfindungsgemäßen Druckwerks 10 verfügt über einen Vorratsbehälter 22 für Feuchtmittel. Dem Vorratsbehälter 22 für Feuchtmittel sind mehrere in Axialrichtung nebeneinander positionierte Blenden 23 zugeordnet, um für jede Druckseite individuell Feuchtmittel auf eine dem Vorratsbehälter 22 nachgeordnete Feuchtwerkwalze 24 aufzutragen. Bei der dem Vorratsbehälter 22 nachgeordneten Feuchtwerkwalze 24 handelt es sich vorzugsweise um eine Feuchtreiberwalze, wobei das Feuchtmittel ausgehend von der Feuchtreiberwalze 24 über mindestens eine weitere Feuchtwerkwalze 25 in Richtung auf mindestens eine Feuchtauftragwalze 26 transportiert wird, die auf dem Formzylinder 11 abrollt und somit das Feuchtmittel auf die oder jede auf dem Formzylinder 11 positionierte Druckform überträgt.The dampening unit 14 of the printing unit 10 according to the invention has a reservoir 22 for dampening solution. The reservoir 22 for fountain solution is associated with a plurality of axially juxtaposed apertures 23 to apply dampening agent individually for each print side on a reservoir 22 downstream dampening roller 24. When the reservoir 22 downstream dampening roller 24 is preferably a dampening drive roller, wherein the dampening solution is transported from the dampening drive roller 24 via at least one further dampening roller 25 in the direction of at least one dampening roller 26 which rolls on the forme cylinder 11 and thus the dampening solution on the or each positioned on the forme cylinder 11 transfers printing form.

Erfindungsgemäß entspricht die Anzahl und die Breite der in Axialrichtung nebeneinander positionierten Farbzonenstellelemente 18 des Farbwerks 13 der Anzahl und der Breite der in Axialrichtung nebeneinander positionierten Blenden 23 des Feuchtwerks 14. Somit kann sowohl Druckfarbe als auch Feuchtmittel für jede Farbzone jeder Druckseite individuell aufgetragen werden.According to the invention, the number and the width of the ink zone actuating elements 18 of the inking unit 13 juxtaposed in the axial direction correspond to the number and the width of the apertures 23 of the dampening unit 14 juxtaposed in the axial direction. Thus, both printing ink and dampening solution can be applied individually for each inking zone of each printing page.

Im gezeigten Ausführungsbeispiel verfügt demnach das Feuchtwerk 14 über sechszehn Blenden 23, um für die in Axialrichtung gesehen vier nebeneinander auf den Bedruckstoff 15 zu druckenden Druckseiten, die jeweils vier Farbzonen umfassen, das Feuchtmittel für jede Farbzone individuell bereitzustellen. Es sei nochmals darauf hingewiesen, dass die Anzahl der in Axialrichtung nebeneinander zu druckenden Druckseiten sowie die Anzahl der Farbzonen je Druckseite rein exemplarischer Natur ist. D.h. es könnten bei n nebeneinander vorgesehenen Druckseiten 4 x n Blenden 23 vorgesehen werden.In the embodiment shown, therefore, the dampening unit 14 has sixteen apertures 23 in order to provide the dampening solution for each ink zone individually for the printed pages to be printed side by side on the substrate 15 in the axial direction, each comprising four ink zones. It should be pointed out once again that the number of print pages to be printed side by side in the axial direction as well as the number of ink zones per print page are of purely exemplary nature. That It could be provided at n juxtaposed pressure pages 4 x n diaphragms 23.

Alle Blenden 23 des Feuchtwerks 14 sind individuell ansteuerbar, um dieselben individuell zu öffnen und zu schließen. Alternativ ist es möglich, dass je Druckseite mehrere Gruppen von Blenden 23 gemeinsam ansteuerbar sind, um die Blenden der jeweiligen Gruppen gemeinsam zu öffnen und zu schließen.All panels 23 of the dampening unit 14 are individually controlled to open and close the same individually. Alternatively, it is possible that each pressure side a plurality of groups of apertures 23 are controllable together to jointly open and close the apertures of the respective groups.

Die Breite der Farbzonenstellelemente 18 sowie die Breite der Blenden 23 entspricht der Breite der Farbzonen, wobei diese Breite vorzugsweise zwischen 20 mm und 60 mm, insbesondere in etwa 40 mm, beträgt.The width of the Farbzonenstellelemente 18 and the width of the aperture 23 corresponds to the width of the ink zones, said width is preferably between 20 mm and 60 mm, in particular about 40 mm.

Stellorgane zur Verstellung der Blenden 23 sind vorzugsweise als Elektromotoren ausgebildet, um die Blenden 23 elektromotorisch zu verstellen.Actuators for adjusting the aperture 23 are preferably designed as electric motors to adjust the aperture 23 by an electric motor.

Das erfindungsgemäße Druckwerk ist insbesondere dann vorteilhaft, wenn Bedruckstoffbahnen mit unterschiedlichen Bedruckstoffbahnformaten bedruckt werden sollen. In diesem Fall können dann durch entsprechende Ansteuerung sowie gegebenenfalls Umgruppierung der Blenden 23 sowie Farbzonen 18 sich ändernden Formaten der Bedruckstoffbahn sowie sich ändernden Formaten der axial nebeneinander auf die Bedruckstoffbahn zu druckenden Druckseiten Rechnung getragen werden.The printing unit according to the invention is particularly advantageous if printing material webs are to be printed with different printing material web formats. In this case, by appropriate control and, if appropriate, regrouping of the diaphragms 23 and ink zones 18, changing formats of the printing material web and changing formats of the print pages to be printed axially next to one another on the printing substrate web can be taken into account.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Druckwerkprinting unit
1111
Formzylinderform cylinder
1212
Übertragungszylindertransfer cylinder
1313
Farbwerkinking
1414
Feuchtwerkdampening
1515
Bedruckstoffsubstrate
1616
GegendruckzylinderImpression cylinder
1717
Vorratsbehälterreservoir
1818
FarbzonenstellelementeInk-zone adjusting elements
1919
FarbwerkwalzeInking roller
2020
FarbwerkwalzeInking roller
2121
FarbauftragwalzeInking roller
2222
Vorratsbehälterreservoir
2323
Blendecover
2424
FeuchtwerkwalzePan roll
2525
FeuchtwerkwalzePan roll
2626
FeuchtauftragwalzeDampener roller

Claims (4)

  1. A printing unit (10), more preferably offset printing unit of a printing machine, more preferably a rotary press machine with a forme cylinder (11), a transfer cylinder (12), an inking unit (13) and a dampening unit (14), wherein the printing unit (10) serves for the printing of a plurality of printing pages on a printing material (15) positioned next to one another in axial direction, wherein the inking unit (13) comprises a reservoir (17) for printing ink, which is assigned a plurality of ink zone key adjusting elements (18) positioned next to one another in axial direction, in order to individually apply printing ink to an inking unit roller (19, 20) arranged downstream of the reservoir (17) for each ink zone of each printing page, wherein the dampening system (14) comprises a reservoir (22) for dampening solution, characterized in that the dampening unit is assigned a plurality of shutters (23) positioned next to one another in axial direction in order to individually apply dampening solution for each printing page to a dampening unit roller (24, 25) arranged downstream of the reservoir (22), wherein the quantity and the width of the ink zone key adjusting elements (18) of the inking unit (13) positioned next to one another in axial direction corresponds to the quantity and the width of the shutters (23) of the dampening unit (14) positioned next to one another in axial direction, so that on the one hand printing ink and on the other hand dampening solution can be individually applied to each ink zone of each printing page.
  2. A printing unit (10) according to Claim 1, characterized in that all shutters (23) of the dampening unit (14) can be activated individually in order to open and close these.
  3. A printing unit (10) according to Claim 1, characterized in that for each printing page a plurality of groups of shutters (23) of the dampening unit (14) can be addressable jointly in order to open and close these.
  4. A printing unit (10) according to Claim 2 or 3, characterized in that the shutters (23) of the dampening unit (14) can be adjusted by means of an electric motor.
EP08015631A 2007-09-06 2008-09-05 Printing unit of a printing press Revoked EP2082876B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007042458A DE102007042458A1 (en) 2007-09-06 2007-09-06 Printing unit i.e. offset printing unit, for e.g. newspaper printing machine, has inking unit including inking zone adjusting elements with number and width that correspond to number and width of covers of dampening unit

Publications (2)

Publication Number Publication Date
EP2082876A1 EP2082876A1 (en) 2009-07-29
EP2082876B1 true EP2082876B1 (en) 2010-08-18

Family

ID=40339947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08015631A Revoked EP2082876B1 (en) 2007-09-06 2008-09-05 Printing unit of a printing press

Country Status (3)

Country Link
EP (1) EP2082876B1 (en)
AT (1) ATE477925T1 (en)
DE (2) DE102007042458A1 (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2931579C2 (en) * 1979-08-03 1982-11-11 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Device for zonal regulation of the dampening solution supply
SE442969B (en) * 1981-12-14 1986-02-10 Wifag Maschf DOSAGE KNIFE
DE3211157A1 (en) * 1982-03-26 1983-10-06 Roland Man Druckmasch METHOD AND DEVICE FOR MOISTURIZING PRINTING PLATES
DE3545535A1 (en) * 1985-12-21 1987-07-02 Mailaender Fa J G Method for applying damping medium and/or ink to an offset printing forme and device for carrying out the method
DE9112926U1 (en) * 1991-10-17 1991-12-05 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Device for zone-wise dosing of a liquid medium on a roller of a printing machine
DE4206525C2 (en) * 1992-03-02 2001-05-17 Heidelberger Druckmasch Ag Device for influencing a dampening solution distribution in a printing unit of a printing press
JP3880831B2 (en) * 2001-10-10 2007-02-14 大日本スクリーン製造株式会社 Ink preset method
JP4484541B2 (en) * 2004-02-20 2010-06-16 大日本スクリーン製造株式会社 Ink supply method for printing press
DE102004022700B3 (en) * 2004-05-05 2005-10-13 Koenig & Bauer Ag Printing press for colored printing has inking mechanism which is adjustable, at least in zones
JP4698414B2 (en) * 2005-12-27 2011-06-08 大日本スクリーン製造株式会社 Development processing method and printing press

Also Published As

Publication number Publication date
DE502008001152D1 (en) 2010-09-30
ATE477925T1 (en) 2010-09-15
EP2082876A1 (en) 2009-07-29
DE102007042458A1 (en) 2009-03-12

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