EP1375142A2 - Machine d'impression rotative avec une unité de couchage et procédure de revêtement d'un cylindre de transfert de feuilles - Google Patents

Machine d'impression rotative avec une unité de couchage et procédure de revêtement d'un cylindre de transfert de feuilles Download PDF

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Publication number
EP1375142A2
EP1375142A2 EP20030008408 EP03008408A EP1375142A2 EP 1375142 A2 EP1375142 A2 EP 1375142A2 EP 20030008408 EP20030008408 EP 20030008408 EP 03008408 A EP03008408 A EP 03008408A EP 1375142 A2 EP1375142 A2 EP 1375142A2
Authority
EP
European Patent Office
Prior art keywords
sheet
printing machine
rotary printing
machine according
coating
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.)
Granted
Application number
EP20030008408
Other languages
German (de)
English (en)
Other versions
EP1375142A3 (fr
EP1375142B1 (fr
Inventor
Arndt Jentzsch
Roland Kühn
Olaf Schinkel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1375142A2 publication Critical patent/EP1375142A2/fr
Publication of EP1375142A3 publication Critical patent/EP1375142A3/fr
Application granted granted Critical
Publication of EP1375142B1 publication Critical patent/EP1375142B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/006—Cleaning, washing, rinsing or reclaiming of printing formes other than intaglio formes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F22/00—Means preventing smudging of machine parts or printed articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/007—Cleaning arrangements or devices for supports of workpieces

Definitions

  • the present invention relates to a sheet-fed rotary printing press with printing units for multi-color printing and at least one coating unit according to the Preamble of claim 1 and a method for the first time or repeated Coating of sheet-guiding cylinders in printing machines according to the generic term of Claim 19.
  • the lateral surfaces of the sheet-guiding cylinders in printing presses come into contact with printed sheets during the printing process.
  • these are turned over and fed to the printing units arranged downstream, the printed side of the printing sheet facing the outer surface of the sheet-guiding cylinder.
  • printing ink can build up on the sheet-guiding cylinders and deposit on the following sheet, which leads to a loss of quality.
  • the outer surfaces of the sheet-guiding cylinders are also worn, which also influences the print quality.
  • the storage of color and the color structure can be avoided on the cylinder jacket by applying a layer of water.
  • the Water acts as a release agent.
  • the pressure cylinder jacket is used to create the water layer air enriched with water vapor.
  • DE 43 20 069 discloses a method and a device for repairing cylinders of printing machines by thermal spray coating.
  • the device is in the Printing machine installed when the surface of the cylinder concerned is worn out and is in need of repair. After removing part of the cylinder jacket, it is blasted, heated and thermally spray-coated, which is what the smoothing and sealing of the applied layer connects.
  • the coating of the cylinder proves to be complex. Due to the process-related high process temperatures in the thermal Coating results in additional dangers and high stress on the other machine components.
  • the object of the invention is to avoid the aforementioned disadvantages a sheet-fed rotary printing press with printing units for multi-color printing and a method for the first or repeated coating to create a permanent Ensure protection for sheet-guiding cylinders against contamination with printing ink.
  • this object is achieved with a printing press of the type mentioned at the beginning, which has the features of claim 1, and with a method that Features of claim 19, solved.
  • the present invention has the advantage that very good ink-repellent and / or wear-resistant properties can be produced on the outer surfaces of the sheet-guiding cylinders of a printing press and can be obtained over almost any length of time.
  • the sheet-guiding cylinders in particular the cylinders which come into contact with a printed sheet side, are assigned a coating unit which comprises an application device with which a coating liquid to be fixed by drying can be applied to the surface of the sheet-guiding cylinder.
  • the layer produced in this way is subject to wear, but can be regenerated easily and as often as desired in the printing press. There is no need to replace worn out elevators or to recoat the cylinders with thermal spraying.
  • the present invention is particularly suitable for use in sheet-fed rotary printing presses with a turning device which can print on the sheet in face and reverse printing, but is also used in pure face printing machines.
  • the regeneration of the properties can be carried out as an automated process during a print pause, for which no manual work, in particular no assembly work for changing lifts, is required.
  • Another embodiment of the invention provides for a washing device known per se to be arranged as a coating unit, which can be used either for applying the coating liquid or for washing the cylinder surface.
  • the washing device can each be assigned a container for holding the coating liquid and a further container for holding a cleaning liquid.
  • the coating unit can optionally be assigned a container containing a coating liquid or a cleaning liquid.
  • the coating liquid easily handle and is in liquid form at room temperature. It essentially exists from inorganic nanoparticles modified with organic additives, the Nanoparticles dissolved in aqueous, alcoholic or mixed solvents are. This makes it chemically stable, which makes storage easier.
  • the layer applied to the sheet-guiding cylinders can depend on the selection the nanoparticle is designed as a color-repellent and / or wear-resistant layer become.
  • the layer is fixed in the simplest way by drying or irradiation with UV light.
  • the application device is a drying device assigned by which the fixation of the coating liquid is accelerated can be.
  • the only drawing shows a schematic representation of the side view of a printing press with coating units that are assigned to the sheet-guiding cylinders.
  • the sheet-fed printing press has a feed table 13 and a feed drum 14 with which individualized sheets are fed to the first, a plurality of printing units 1 arranged one behind the other.
  • Each of the printing units 1 comprises a sheet-guiding cylinder designed as an impression cylinder 5, which is in contact with a blanket cylinder 2, to which a plate cylinder 3 is assigned.
  • a sheet-guiding cylinder designed as a transfer drum 4 is arranged for transporting the sheets between the printing units 1, the number of transfer drums 4 or sheet-guiding cylinders not being important for the application of the invention, and the invention is also applicable to sheet-fed printing machines between their printing units 1 three transfer drums 4 are arranged. All sheet-guiding cylinders are equipped with gripper systems in a known manner.
  • One or more of the transfer drums 4 can also be designed as reversing drums.
  • the second transfer drum 4 is a reversing drum when viewed in the direction of sheet travel.
  • a coating unit 6.1, 6.2 is assigned to all impression cylinders 5 of the printing press.
  • the basic structure of the coating units 8 corresponds to washing devices known per se.
  • the coating unit 6.2 consists of a container 7, which is used to hold the coating liquid 8, an application device 11 and a roller 9 driven in rotation.
  • the application device 11 is designed in the form of a row of nozzles extending over the width of the sheet-guiding cylinder, with the pressurized one Coating liquid 8 is applied to the outer surface of the impression cylinder 5.
  • the roller 9 distributes the applied coating liquid 8 into a uniformly thick layer. It is preferably provided with a soft elastic coating or can be designed as a brush roller.
  • a circumferentially driven cloth 10 is provided in the similarly constructed coating unit 6.1. The application of the coating liquid 8 takes place with an application device, not shown, which sprays this coating liquid 8 onto the cloth 10. After the coating liquid 8 has been sprayed on, it is transferred from the cloth 10, which is in contact with the outer surface of the sheet-guiding cylinder, to the sheet-guiding cylinder.
  • the thickness of the applied layer can be changed in all versions of the coating unit Control 6.1, 6.2 by setting the process parameters.
  • a sensor can be used for this Detection of the layer thickness can be provided, which interacts with a controller that the application device 11 and the movement of the roller 9 or the cloth 10 controls.
  • the coating units 6.1, 6.2 can be fixed to a single or optionally several be assigned to different arc-guiding cylinders.
  • the viewed in the direction of sheet travel first coating unit 6.2 working with a soft elastic roller 9 as an example of a fixed coating unit 6.2.
  • the other coating units 6.1, 6.2 can either a counter-pressure cylinder 5 or a sheet guide drum be assigned.
  • the coating unit 6.1 equipped with a cloth 10 is between two positions pivotable, in which they either the impression cylinder 5 or the transfer drum 4 is assigned.
  • the coating units 6.1, 6.2 are arranged above the sheet-guiding cylinders.
  • coating liquid 8 is applied immediately before or after the printing zone formed between blanket cylinder 2 and impression cylinder 5 is.
  • a washing device can also be provided as the coating unit 6.1, 6.2.
  • usable are all washing devices with which a uniform film of the coating liquid can be applied to the sheet-guiding cylinder, which in the common washing devices of the brush, roller or cloth type is the case.
  • An aqueous or alcoholic solution is provided as coating liquid 8, which contains inorganic nanoparticles modified with organic additives.
  • the nanoparticles consist of oxides of the elements of the II. To V. main and sub-group or their mixtures, in particular of silicon oxide, titanium oxide, aluminum oxide, zirconium oxide or mixtures thereof.
  • Hydrolysis products of long-chain trialkoxysilanes R-Si (OR) 3 and / or dialkoxysilanes R-Si (OR) 2 where R contains 4 to 18 carbon atoms in alkyl, aralkyl or fluoroalkyl radicals, are provided as organic additives.
  • a coating liquid 8 has proven to be particularly suitable, the nanocrystalline particles of which consist of a silicon oxide / aluminum oxide compound which is modified with fluoroalkylsilanes or fluoroalkyl-functionalized polysiloxanes.
  • the coating produced on the sheet-guiding cylinders using such a coating liquid 8 has a strong ink-repellent effect, so that a sheet-guiding cylinder is protected against contamination with printing ink.
  • wear-resistant properties can also be set as an alternative or in addition to the color-repellent properties.
  • the coating liquid can be fixed in a simple manner by heat treatment in the form of drying or depending on the composition of the coating liquid by irradiation with UV light or another suitable radiation source respectively. This triggers crosslinking reactions, via which in the coating liquid contained molecules are irreversibly linked. For drying temperatures between 15 and 100 ° C are provided.
  • the application device 11 is assigned a drying device 12, which is preferred is designed as a hot air dryer.
  • a Radiation source for UV light may be provided.
  • the coating liquid 8 can be poured and applied directly into the container 7 originally intended to hold a cleaning liquid.
  • 7 cleaning liquid or coating liquid 8 is provided as the medium in the container.
  • a container 7 for holding the coating liquid 8 and a further separate container for holding the cleaning liquid are provided. Both containers are connected to the application device via separate line systems.
  • the line system provided between the container 7 intended to hold the coating liquid 8 and the application device 11 is designed as a closed circuit. This ensures that coating liquid with the desired proportion of solvent is always applied even after a long period of non-use.
  • a stirring device can be assigned to the container 7.
  • the coating process is initiated. Before applying the coating liquid 8, it must be ensured that the surface of the sheet-guiding cylinder is free of dirt. If this is not the case, the coating process is preceded by a cleaning process, for the implementation of which a washing device can be provided.
  • the blanket cylinder 2 is then turned off by the impression cylinder 5 in order to prevent coating liquid 8 from getting onto the blanket.
  • the coating liquid 8 is applied to the sheet-guiding cylinder as a uniform process and, depending on the design, the layer formed is evened out by a roller 9 or a cloth 10.
  • the sheet-guiding cylinder is rotated at a constant speed under the fixed coating unit 6.1, 6.2. After the coating liquid 8 has been applied, it is fixed with the aid of the drying device 12.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printing Methods (AREA)
  • Rotary Presses (AREA)
EP20030008408 2002-06-21 2003-04-11 Machine d'impression rotative avec une unité de couchage et procédure de revêtement d'un cylindre de transfert de feuilles Expired - Lifetime EP1375142B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10227758 2002-06-21
DE2002127758 DE10227758A1 (de) 2002-06-21 2002-06-21 Rotationsdruckmaschine mit einer Beschichtungseinheit und Verfahren zur Beschichtung bogenführender Zylinder

Publications (3)

Publication Number Publication Date
EP1375142A2 true EP1375142A2 (fr) 2004-01-02
EP1375142A3 EP1375142A3 (fr) 2004-05-12
EP1375142B1 EP1375142B1 (fr) 2005-09-28

Family

ID=29716581

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030008408 Expired - Lifetime EP1375142B1 (fr) 2002-06-21 2003-04-11 Machine d'impression rotative avec une unité de couchage et procédure de revêtement d'un cylindre de transfert de feuilles

Country Status (2)

Country Link
EP (1) EP1375142B1 (fr)
DE (2) DE10227758A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1657056A1 (fr) * 2004-11-16 2006-05-17 MAN Roland Druckmaschinen AG Machine d'impression polychrome et méthode de fonctionnement d'une machine d'impression polychrome
EP1661702A1 (fr) * 2004-11-30 2006-05-31 Oxy-Dry Maschinen GmbH Méthode et appareil pour le nettoyage de cylindres dans une machine d'impression
EP2367687A4 (fr) * 2008-12-24 2012-10-24 Printing Research Inc Chemises anti-marquage en fluoropolymère et procédés pour leur utilisation en impression offset

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006012607A1 (de) * 2006-03-18 2007-09-20 Man Roland Druckmaschinen Ag Satellitendruckeinheit einer Rollenrotationsdruckmaschine
DE102006041219A1 (de) * 2006-09-02 2008-03-06 Koenig & Bauer Aktiengesellschaft Inline-Verfahren und Druckmaschine zum beidseitigen Bedrucken von Bogen
DE102007057798B4 (de) 2006-12-20 2018-12-06 Heidelberger Druckmaschinen Ag Verfahren zum Behandeln einer drucktechnischen Oberfläche
DE102008016445A1 (de) 2007-04-26 2008-10-30 Heidelberger Druckmaschinen Ag Druckmaschine mit einer Gegendruckzylinder-Pudereinrichtung
DE102008029817A1 (de) 2008-06-24 2009-12-31 Heidelberger Druckmaschinen Ag Verfahren zum Herstellen einer Bedruckstoff kontaktierenden Oberfläche
DE102011010718B4 (de) 2010-03-12 2022-07-07 Heidelberger Druckmaschinen Ag Verfahren zum Herstellen einer strukturierten, Bedruckstoff kontaktierenden Oberfläche
DE102015226246A1 (de) 2015-12-21 2016-02-25 Heidelberger Druckmaschinen Ag Verfahren zur Herstellung einer Oberfläche für den Transport von Bedruckstoff

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2127021A1 (de) 1970-07-23 1972-01-27 VEB Polygraph Leipzig, Kombinat für polygraphische Maschinen und Ausrüstungen, χ 7050 Leipzig Anordnung zur Regulierung der Feuchtigkeitsfilmdicke auf Zylindermantelflächen von Druckmaschinen
DE1258873B (fr) 1963-05-27 1974-01-24
DE4320069A1 (de) 1993-06-17 1995-01-12 Roland Man Druckmasch Verfahren und Vorrichtung zur Reparatur von Zylindern von Druckmaschinen
DE19948311A1 (de) 1999-10-06 2001-04-12 Nanogate Gmbh Verfahren, Vorrichtung sowie Stoffe
DE10115876A1 (de) 2000-04-27 2001-10-31 Heidelberger Druckmasch Ag Farbabweisende Beschichtung für ein einen Bedruckstoff kontaktierendes Element

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB645083A (en) * 1948-03-10 1950-10-25 Oxvar Ltd Improved method and machine for the cleaning of cylinders
DD60314A1 (de) * 1967-04-03 1968-02-20 Einrichtung zum Verhindern des Abliegens von Druckfarbe auf dem Druckzylinder von Schön- und Widerdruckmaschinen
FR2587274B3 (fr) * 1985-09-16 1987-10-30 Mareels Gerard Dispositif antimaculant de transport de bande imprimee
DE9303835U1 (de) * 1993-03-16 1993-05-06 MAN Roland Druckmaschinen AG, 6050 Offenbach Druckeinheit einer Offset-Rotationsdruckmaschine
DE19541160C1 (de) * 1995-11-04 1997-01-30 Roland Man Druckmasch Verfahren zur Reinigung eines Zylinders einer Rotationsdruckmaschine
JP3005620B2 (ja) * 1996-03-28 2000-01-31 レフライト株式会社 インキ汚れ防止シート

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1258873B (fr) 1963-05-27 1974-01-24
DE2127021A1 (de) 1970-07-23 1972-01-27 VEB Polygraph Leipzig, Kombinat für polygraphische Maschinen und Ausrüstungen, χ 7050 Leipzig Anordnung zur Regulierung der Feuchtigkeitsfilmdicke auf Zylindermantelflächen von Druckmaschinen
DE4320069A1 (de) 1993-06-17 1995-01-12 Roland Man Druckmasch Verfahren und Vorrichtung zur Reparatur von Zylindern von Druckmaschinen
DE19948311A1 (de) 1999-10-06 2001-04-12 Nanogate Gmbh Verfahren, Vorrichtung sowie Stoffe
DE10115876A1 (de) 2000-04-27 2001-10-31 Heidelberger Druckmasch Ag Farbabweisende Beschichtung für ein einen Bedruckstoff kontaktierendes Element

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1657056A1 (fr) * 2004-11-16 2006-05-17 MAN Roland Druckmaschinen AG Machine d'impression polychrome et méthode de fonctionnement d'une machine d'impression polychrome
JP2006142821A (ja) * 2004-11-16 2006-06-08 Man Roland Druckmas Ag 多色印刷機及び多色印刷機を運転する方法
EP1661702A1 (fr) * 2004-11-30 2006-05-31 Oxy-Dry Maschinen GmbH Méthode et appareil pour le nettoyage de cylindres dans une machine d'impression
EP2367687A4 (fr) * 2008-12-24 2012-10-24 Printing Research Inc Chemises anti-marquage en fluoropolymère et procédés pour leur utilisation en impression offset

Also Published As

Publication number Publication date
DE50301245D1 (de) 2006-02-09
EP1375142A3 (fr) 2004-05-12
DE10227758A1 (de) 2004-01-29
EP1375142B1 (fr) 2005-09-28

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