EP1040921B1 - Surface for machine parts in printing machines - Google Patents

Surface for machine parts in printing machines Download PDF

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Publication number
EP1040921B1
EP1040921B1 EP20000105146 EP00105146A EP1040921B1 EP 1040921 B1 EP1040921 B1 EP 1040921B1 EP 20000105146 EP20000105146 EP 20000105146 EP 00105146 A EP00105146 A EP 00105146A EP 1040921 B1 EP1040921 B1 EP 1040921B1
Authority
EP
European Patent Office
Prior art keywords
machine part
ormocer
part according
machine parts
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.)
Revoked
Application number
EP20000105146
Other languages
German (de)
French (fr)
Other versions
EP1040921A1 (en
Inventor
Arndt Jentzsch
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
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Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1040921A1 publication Critical patent/EP1040921A1/en
Application granted granted Critical
Publication of EP1040921B1 publication Critical patent/EP1040921B1/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • 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
    • B41N7/00—Shells for rollers of printing machines
    • 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
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/02—Top layers
    • 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
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/14—Location or type of the layers in shells for rollers of printing machines characterised by macromolecular organic compounds

Definitions

  • the invention relates to a machine part in a printing machine, which comes into contact with paint and / or water and / or dirt particles, in particular a sheet guiding cylinder, guide elements for the sheet guide, traverses or Druckan- and -abstellwellen.
  • machine parts for example a dampening cylinder, are provided with a structured surface layer of chromium.
  • a disadvantage of all of the above solutions is that after many hours of operation due to the usual dirt particles in the printing press, a buildup of dirt and paint on the surface can not be ruled out and the surface must be cleaned.
  • the invention is based on the recognition that a self-cleaning microstructured surface on machine parts in printing machines can solve the problem posed.
  • baffles with a curved or straight surface may be considered.
  • New and essential to the invention is the application of the surface for machine parts in printing presses.
  • the surface is structured.
  • the structure of the surface has a spacing of 5 to 50 ⁇ m and a height of 5 to 20 ⁇ m.
  • this structure in conjunction with the applied material ensures the reduction of the adhesion forces between the surface and the dirt particles.
  • the material of the surface is Ormocer lacquer, which is applied by dipping or by spraying on the machine parts.
  • the surface by means of plasma and then to soak with Ormocer liquid.
  • the surface has hydrophobic and oleophobic properties, so that not only water, but also oily substances, such as colors and / or dirt are rejected.

Description

Die Erfindung betrifft ein Maschinenteil in einer Druckmaschine, das mit Farbe und/oder Wasser und/oder Schmutzpartikeln in Berührung kommt, insbesondere einen Bogenführungszylinder, Leitelemente für die Bogenführung, Traversen oder Druckan- und -abstellwellen.The invention relates to a machine part in a printing machine, which comes into contact with paint and / or water and / or dirt particles, in particular a sheet guiding cylinder, guide elements for the sheet guide, traverses or Druckan- and -abstellwellen.

An Druckzylindern nach der Wendeeinrichtung in umstellbaren Schön- und Widerdruckmaschinen hat es verschiedene Versuche gegeben, um die Oberfläche der Zylinder farbstoßend zu machen.On printing cylinders after the turning device in reversible perfecting machines there have been various attempts to make the surface of the cylinder colorbstossend.

Bekannt ist, einen Zylinder mit einem Aluminiumblech zu überziehen, das gekörnt, anodisiert, sandgeblasen oder in anderer Weise behandelt worden ist, um eine Oberflächenrauhigkeit zu erzielen; dies allein hat aber das Verschmieren und die Farbübertragung nicht beseitigt. Man hat ferner solche Zylinder mit einem Bogen überzogen, der aus einem Papierträger besteht, der mit Klebstoff bedeckt ist, in welchen kleine Glasperlen oder -kugeln eingebettet sind. Auch hiermit sind aber keine vollständig befriedigenden Ergebnisse erzielt worden, weil das Schmieren und die Farbübertragung nicht restlos beseitigt wurden und es sich außerdem zeigte, dass die Glasperlen oder -kugeln von ihrem Papierträger gelöst werden und dann den Druck beeinträchtigen; hierdurch werden zusätzliche Stillsetzungen zwecks Säuberung der Druckpresse erforderlich.It is known to coat a cylinder with an aluminum sheet that has been grained, anodized, sandblasted, or otherwise treated to achieve surface roughness; but this alone has not eliminated the smearing and color transfer. Furthermore, such cylinders have been covered with a sheet consisting of a paper carrier covered with adhesive in which small glass beads or balls are embedded. However, even with this, completely satisfactory results have not been obtained because greasing and ink transfer have not been completely eliminated, and it has also been found that the glass beads or balls are released from their paper carrier and then interfere with the pressure; This will require additional shutdowns to clean the printing press.

Ferner ist schon vorgeschlagen worden, bei Druckmaschinen diejenigen Teile derselben, die mit einer gerade bedruckten Seite des Bogens oder der Bahn in Berührung kommen, aus amalgamierbarem Metall herzustellen oder aber mit einem Überzug aus amalgamierbarem Metall zu versehen. Die letztgenannte Ausbildung trägt der Tatsache Rechnung, dass das Amalgam eines Metalls eine geringere Festigkeit aufweist als das reine Metall. Hierdurch wird die Werkstoffauswahl für die mit frisch gedruckten Bogen in Berührung kommenden Maschinenteile stark eingeschränkt; außerdem ist das Amalgamieren ein recht kostspieliges Verfahren. Infolge der geringeren Festigkeit des Metallamalgams ist der Verschleiß der betreffenden Teile außerdem ziemlich hoch. Trotz alledem bringt auch diese Maßnahme nicht den erstrebten Erfolg einer praktisch vollständigen Ausschaltung des Farbverschmierens und der Farbübertragung.Furthermore, it has already been proposed in printing presses to produce those parts of the same which come into contact with a straight printed side of the sheet or web from amalgamable metal or to provide it with a coating of amalgamable metal. The latter training takes account of the fact that the amalgam of a metal has a lower strength than the pure metal. As a result, the choice of materials for the machine parts coming into contact with freshly printed sheets is severely limited; In addition, amalgamation is a rather costly process. Due to the lower strength of the metal amalgam, the wear of the parts in question is also quite high. Despite all this, this measure does not bring the desired success of a virtually complete elimination of Farbverschmierens and color transfer.

Aus der Druckschrift DE 42 11 881 C2 ist ein Verfahren zum elektrochemischen Aufbringen einer strukturierten Oberfläche bekannt. Gemäß dieser Druckschrift werden Maschinenteile, beispielsweise ein Feuchtreibzylinder, mit einer strukturierten Oberflächenschicht aus Chrom versehen.From the publication DE 42 11 881 C2 For example, a method of electroplating a patterned surface is known. According to this document, machine parts, for example a dampening cylinder, are provided with a structured surface layer of chromium.

Aus der Druckschrift DE 12 58 873 ist ein Druckzylinder bekannt, der mit einer rauhen Chromschicht versehen ist, die eine farbabstoßende Wirkung aufweist.From the publication DE 12 58 873 a printing cylinder is known, which is provided with a rough chromium layer, which has an ink-repellent effect.

Des Weiteren ist aus der DE 39 31 479 A1 eine bogenführende Folie als Aufzug für einen Zylinder bekannt, die statistisch gleichmäßig verteilte, gleichhohe Kugelkalotten, die mit einer Silikonschicht beschichtet sind, aufweist.Furthermore, from the DE 39 31 479 A1 a sheet-guiding film known as elevator for a cylinder, the statistically evenly distributed, equal-height spherical caps, which are coated with a silicone layer comprises.

Nachteilig an allen der genannten Lösungen ist, dass nach vielen Betriebsstunden auch infolge der üblichen Schmutzpartikel in der Druckmaschine ein Aufbau von Schmutz und Farbe auf die Oberfläche nicht auszuschließen ist und die Oberfläche gesäubert werden muss. Ausgehend von den Nachteilen aus dem Stand der Technik ist es Aufgabe der Erfindung, eine Oberfläche für Maschinenteile in Druckmaschinen zu schaffen, die Schmutz jeder Art, wie beispielsweise Farbe, Papierstaub u.ä. selbstständig abweist.A disadvantage of all of the above solutions is that after many hours of operation due to the usual dirt particles in the printing press, a buildup of dirt and paint on the surface can not be ruled out and the surface must be cleaned. Based on the disadvantages of the prior art, it is an object of the invention to provide a surface for machine parts in printing presses, the dirt of any kind, such as paint, paper dust u.ä. self-rejecting.

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

Die Erfindung geht von der Erkenntnis aus, dass eine sich selbstreinigende mikrostrukturierte Oberfläche auf Maschinenteilen in Druckmaschinen die gestellt Aufgabe lösen kann.The invention is based on the recognition that a self-cleaning microstructured surface on machine parts in printing machines can solve the problem posed.

Anhand eines Ausführungsbeispieles soll nachfolgend die Erfindung näher beschrieben werden.Reference to an embodiment, the invention will be described in more detail below.

Als Maschinenteile, die eine sich selbstreinigende mikrostrukturierte Oberfläche aufweisen, kommen beispielsweise Zylinder (gewölbte Oberfläche), Leiteinrichtungen mit gekrümmter oder gerader Oberfläche in Betracht.As machine parts having a self-cleaning microstructured surface, for example, cylinders (curved surface), baffles with a curved or straight surface may be considered.

Neu und erfindungswesentlich ist die Anwendung der Oberfläche für Maschinenteile in Druckmaschinen. Die Oberfläche ist strukturiert. Die Struktur der Oberfläche weist einen Abstand von 5 bis 50 µm und eine Höhe von 5 bis 20 µm auf. In Abkehr von der herrschenden Lehre, dass glatte Oberflächen Grundlage einer sauberen Oberfläche sind, gewährleistet diese Struktur in Verbindung mit dem aufgetragenen Material die Herabsetzung der Adhäsionskräfte zwischen Oberfläche und Schmutzteilchen. Das Material der Oberfläche ist Ormocer-Lack, der durch Tauchen oder durch Spritzen auf die Maschinenteile aufgebracht wird.New and essential to the invention is the application of the surface for machine parts in printing presses. The surface is structured. The structure of the surface has a spacing of 5 to 50 μm and a height of 5 to 20 μm. In contrast to the prevailing theory that smooth surfaces are the basis of a clean surface, this structure in conjunction with the applied material ensures the reduction of the adhesion forces between the surface and the dirt particles. The material of the surface is Ormocer lacquer, which is applied by dipping or by spraying on the machine parts.

Nach einer anderen Variante ist es auch möglich, die Oberfläche mittels Plasma zu beschichten und anschließend mit Ormocer-Flüssigkeit zu tränken.
Die Oberfläche weist hydrophobe und oleophobe Eigenschaften auf, so dass nicht nur Wasser, sondern auch ölhaltige Stoffe, wie beispielsweise Farben und/oder Schmutz abgewiesen werden. According to another variant, it is also possible to coat the surface by means of plasma and then to soak with Ormocer liquid.
The surface has hydrophobic and oleophobic properties, so that not only water, but also oily substances, such as colors and / or dirt are rejected.

Claims (6)

  1. Machine part in a printing machine, which comes into contact with ink and/or water and/or contaminating particles, in particular a sheet guiding cylinder or conducting element for the sheet guidance, with a microstructured surface on an 'Ormocer' lacquer coating having a self-cleaning capability.
  2. Machine part according to claim 1, wherein the structure of the surface has a spacing of 5 to 50 microns and a height of 5 to 20 microns.
  3. Machine part according to claim 1, wherein the 'Ormocer' lacquer is applied by spraying onto the machine part.
  4. Machine part according to claim 1, wherein the 'Ormocer' lacquer is applied to the machine part by dipping.
  5. Machine part according to claim 1, wherein the surface layer is plasma-coated and is saturated with 'Ormocer' liquid.
  6. Machine part according to claim 1, wherein the coating has hydrophobic and oleophobic characteristics.
EP20000105146 1999-03-27 2000-03-10 Surface for machine parts in printing machines Revoked EP1040921B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999114136 DE19914136B4 (en) 1999-03-27 1999-03-27 Surface for machine parts in printing machines
DE19914136 1999-03-27

Publications (2)

Publication Number Publication Date
EP1040921A1 EP1040921A1 (en) 2000-10-04
EP1040921B1 true EP1040921B1 (en) 2008-07-09

Family

ID=7902772

Family Applications (1)

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EP20000105146 Revoked EP1040921B1 (en) 1999-03-27 2000-03-10 Surface for machine parts in printing machines

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EP (1) EP1040921B1 (en)
DE (2) DE19914136B4 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951599A1 (en) 1999-10-27 2001-05-23 Henkel Kgaa Process for adhesive separation of adhesive bonds
DE10063171A1 (en) * 2000-12-18 2002-06-20 Heidelberger Druckmasch Ag Cylinder jacket profile
DE10202991A1 (en) * 2002-01-26 2003-07-31 Roland Man Druckmasch Easily cleanable surface for an ink-soiled component of a printing machine has a coating with hydrophilic characteristics
DE10209297A1 (en) 2002-03-01 2003-09-18 Koenig & Bauer Ag Surface for machine parts of a printing press
DE10241671A1 (en) * 2002-09-09 2004-03-18 Heidelberger Druckmaschinen Ag Substrate contacting element with ink-repellent coating and method for coating a substrate contacting element
EP1514683B1 (en) 2003-09-09 2013-06-05 Koenig & Bauer Aktiengesellschaft Method for operating a printing press

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3161130A (en) * 1963-05-27 1964-12-15 Miller Printing Machinery Co Printing apparatus
DE3512176A1 (en) * 1985-04-03 1986-10-09 Winfried 7758 Meersburg Heinzel METHOD FOR TREATING THE SURFACE OF A PRINTING MACHINE CYLINDER
US4794680A (en) * 1985-12-20 1989-01-03 Union Carbide Corporation Novel wear-resistant laser-engraved ceramic or metallic carbide surfaces for friction rolls for working elongate members, method for producing same and method for working elongate members using the novel friction roll
DE3905679A1 (en) * 1989-02-24 1990-08-30 Heidelberger Druckmasch Ag METAL FILM AS A LIFT FOR ARCHING CYLINDERS AND / OR DRUMS ON ROTARY PRINTING MACHINES
DE3931479A1 (en) * 1989-09-21 1991-04-04 Heidelberger Druckmasch Ag BOW-LEADING FILM AS LIFT FOR COUNTERPRESSURE CYLINDERS AND BOW TRANSFER CYLINDERS IN BOW-OFFSET PRINTING MACHINES FOR BEAUTIFUL AND REPRINTING
DE4207119C2 (en) * 1992-03-06 1999-09-02 Roland Man Druckmasch Arch-guiding pressure cylinder jacket profile
DE4211881C2 (en) * 1992-04-09 1994-07-28 Wmv Ag Process for the electrochemical application of a structured surface coating
DE19515393B4 (en) * 1995-04-26 2004-01-15 Man Roland Druckmaschinen Ag Surface structure carrying substrates, preferably for printing press cylinders or their elevators

Also Published As

Publication number Publication date
DE19914136A1 (en) 2000-09-28
DE19914136B4 (en) 2009-02-26
EP1040921A1 (en) 2000-10-04
DE50015248D1 (en) 2008-08-21

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