EP0615862B1 - Inking roller for a printing machine - Google Patents

Inking roller for a printing machine Download PDF

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Publication number
EP0615862B1
EP0615862B1 EP94103859A EP94103859A EP0615862B1 EP 0615862 B1 EP0615862 B1 EP 0615862B1 EP 94103859 A EP94103859 A EP 94103859A EP 94103859 A EP94103859 A EP 94103859A EP 0615862 B1 EP0615862 B1 EP 0615862B1
Authority
EP
European Patent Office
Prior art keywords
roller
metal
oleophilic
hydrophilic
oxide
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.)
Expired - Lifetime
Application number
EP94103859A
Other languages
German (de)
French (fr)
Other versions
EP0615862A1 (en
Inventor
Rainer Kotte
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 Albert 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 Albert AG filed Critical Koenig and Bauer Albert AG
Publication of EP0615862A1 publication Critical patent/EP0615862A1/en
Application granted granted Critical
Publication of EP0615862B1 publication Critical patent/EP0615862B1/en
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
    • B41N7/00—Shells for rollers of printing machines
    • B41N7/06—Shells for rollers of printing machines for inking rollers
    • 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
    • B41N2207/10—Location or type of the layers in shells for rollers of printing machines characterised by inorganic compounds, e.g. pigments

Definitions

  • the invention relates to a roller for an inking unit of a printing press according to the preamble of claim 1.
  • a generic roller has become known from EP 02 87 002 A2. It consists of a steel cylinder, on the jacket of which there is a corrosion protection layer made of metal and on which in turn a metal ceramic layer is applied. The outer surface is provided with a large number of cups.
  • an anilox roller is known, the outer surface of which is composed of hydrophilic and oleophilic areas.
  • JP-A-62167092 shows a roller for an inking unit which has a coating.
  • This coating consists of copper and very hard and wear-resistant chrome carbide.
  • the mixture of copper and chrome carbide is applied to a core using a flame spraying process.
  • the copper content must be increased.
  • Another roller for an inking unit has become known from GB-A-2 089 473.
  • an intermediate layer made of nickel and aluminum.
  • An outer layer which has the property of being extremely wear-resistant, is sprayed onto it using a flame spraying process.
  • This layer is composed of tungsten, aluminum, titanium and cobalt and / or their oxides, carbides and nitrides.
  • Lubricants such as molybdenum, copper, chromium and nickel, their oxides and / or their sulfides are included in this material.
  • the invention has for its object to provide an inking roller, the outer surface of which has hydrophilic and oleophilic surface portions and a method for producing such a jacket and outer surface.
  • a z. B. thin with a non-ferrous metal e.g. B. nickel coated outer surface 1 of a steel roller 2 or on a outer surface 1 of a tube that can be pushed onto a roller core, a mixture of metal ceramic (e.g. Cr 2 O 3 ) and metallic copper (Cu ) applied.
  • the Cr 2 O 3 has hydrophilic and the Cu oleophilic properties.
  • a hydrophilic metal oxide z. B. Cr 2 O 3 or oxides of aluminum or zircon used with an oleophilic metal, for. B. copper is coated.
  • the metal oxide particles can for example between 20 - 45 microns, the enveloping oleophilic metal layer, -. B. of copper, between 5 and 45 microns thick.
  • the lateral surface of the steel roller After hitting the hot metal-ceramic plasma the lateral surface of the steel roller form isolated or connected islands made of the oleophilic metal with which the ceramic particles were coated, for. B. from oleophilic copper, between them is the hydrophilic ceramic.
  • the lateral surface of the inking roller has an arbitrary mixture of surfaces made up of small oleophilic metal surfaces and hydrophilic ceramic surfaces.
  • the ceramic / metal surface of the roller is then ground, then polished and finally provided with cups.
  • the introduction of scanning cells by means of laser radiation or engraving is known. After inserting the wells, the roller is ground or polished again.

Description

Die Erfindung betrifft eine Walze für ein Farbwerk einer Druckmaschine gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a roller for an inking unit of a printing press according to the preamble of claim 1.

Eine gattungsgemäße Walze ist durch die EP 02 87 002 A2 bekanntgeworden. Sie besteht aus einem Stahlzylinder, auf dessen Mantel eine Korrosionsschutzschicht aus Metall, und auf dieser wiederum eine Metallkeramikschicht aufgebracht ist. Die Mantelfläche ist mit einer Vielzahl von Näpfchen versehen.A generic roller has become known from EP 02 87 002 A2. It consists of a steel cylinder, on the jacket of which there is a corrosion protection layer made of metal and on which in turn a metal ceramic layer is applied. The outer surface is provided with a large number of cups.

Aus der EP 05 11 543 A1 ist eine Rasterwalze bekannt, deren Mantelfläche aus hydrophilen und oleophilen Flächenanteilen zusammengesetzt ist.From EP 05 11 543 A1 an anilox roller is known, the outer surface of which is composed of hydrophilic and oleophilic areas.

Die JP-A-62167092 zeigt eine Walze für ein Farbwerk, die eine Beschichtung aufweist. Diese Beschichtung besteht aus Kupfer und sehr hartem und verschleißfestem Chromkarbid. Die Mischung aus Kupfer und Chromkarbid wird mittels Flammspritzverfahrens auf einen Kern aufgebracht. Bei Verwendung von Druckfarbe mit höheren Wasseranteilen muß der Kupferanteil erhöht werden.JP-A-62167092 shows a roller for an inking unit which has a coating. This coating consists of copper and very hard and wear-resistant chrome carbide. The mixture of copper and chrome carbide is applied to a core using a flame spraying process. When using printing ink with a higher water content, the copper content must be increased.

Eine weitere Walze für ein Farbwerk ist durch die GB-A-2 089 473 bekannt geworden. Auf eine Stahlwalze ist eine Zwischenlage aus Nickel und Aluminium aufgebracht. Auf sie ist mittels Flammspritzverfahren eine äußere Schicht aufgespritzt, die die Eigenschaft hat, extrem verschleißfest zu sein. Diese Schicht setzt sich zusammen aus Wolfram, Aluminium, Titan und Kobalt und/oder deren Oxyden, Karbiden und Nitriden. Eingeschlossen in dieses Material sind Gleitmittel wie Molybdän, Kupfer, Chrom und Nickel, deren Oxyde und/oder deren Sulfide.Another roller for an inking unit has become known from GB-A-2 089 473. On a steel roller an intermediate layer made of nickel and aluminum. An outer layer, which has the property of being extremely wear-resistant, is sprayed onto it using a flame spraying process. This layer is composed of tungsten, aluminum, titanium and cobalt and / or their oxides, carbides and nitrides. Lubricants such as molybdenum, copper, chromium and nickel, their oxides and / or their sulfides are included in this material.

Der Erfindung liegt die Aufgabe zugrunde, eine Farbwerkwalze zu schaffen, deren Mantelfläche hydrophile und oleophile Flächenanteile aufweist und ein Verfahren zur Herstellung eines derartigen Mantels und Mantelfläche.The invention has for its object to provide an inking roller, the outer surface of which has hydrophilic and oleophilic surface portions and a method for producing such a jacket and outer surface.

Die Aufgabe wird gelöst mittels der Verfahrensschritte des kennzeichnenden Teils des Patentanspruches 1 und den Merkmalen des kennzeichnenden Teils des Patentanspruches 1.The object is achieved by means of the method steps of the characterizing part of patent claim 1 and the features of the characterizing part of patent claim 1.

Ein Ausführungsbeispiele werden im folgenden näher beschrieben.An exemplary embodiment is described in more detail below.

Auf einer z. B. dünn mit einem Nichteisenmetall, z. B. Nickel beschichteten Mantelfläche 1 einer Stahlwalze 2 oder einer auf eine Mantelfläche 1 eines auf einen Walzenkern aufschiebbaren Rohres, wird mittels sog. Plasmaspritzen (thermische Spritzen) ein Mischung aus Metallkeramik (z. B. Cr2 O3) und metallischem Kupfer (Cu) aufgebracht. Das Cr2 O3 hat hydrophile und das Cu oleophile Eigenschaften.On a z. B. thin with a non-ferrous metal, e.g. B. nickel coated outer surface 1 of a steel roller 2 or on a outer surface 1 of a tube that can be pushed onto a roller core, a mixture of metal ceramic (e.g. Cr 2 O 3 ) and metallic copper (Cu ) applied. The Cr 2 O 3 has hydrophilic and the Cu oleophilic properties.

Beim Plasmaspritzen wird dabei als Spritzpulver erfindungsgemäß ein hydrophiles Metalloxyd z. B. Cr2 O3 oder Oxide des Aluminiums oder Zirkons verwendet, das mit einem oleophilen Metall, z. B. Kupfer umhüllt ist. Die Metalloxydpartikel können beispielsweise zwischen 20 - 45 µm, die sie umhüllende oleophile Metallschicht, - z. B. aus Kupfer -, zwischen 5 und 45 µm dick sein.In plasma spraying, a hydrophilic metal oxide z. B. Cr 2 O 3 or oxides of aluminum or zircon used with an oleophilic metal, for. B. copper is coated. The metal oxide particles can for example between 20 - 45 microns, the enveloping oleophilic metal layer, -. B. of copper, between 5 and 45 microns thick.

Man wählt die Metallumhüllungsschichtdicke so, daß man einen gewünschten oleophilen Flächenanteil, z. B. 5% an der Mantelfläche der Farbwerkwalze erhält.You choose the metal cladding layer thickness so that you have a desired oleophilic area, z. B. 5% on the outer surface of the inking roller.

Nach Auftreffen des heißen Metall-Keramik-Plasmas auf die Mantelfläche der Stahlwalze bilden sich einzelnstehende oder zusammenhängende Inseln aus dem oleophilen Metall, mit dem die Keramikpartikel umhüllt waren, z. B. aus oleophilem Kupfer, zwischen ihnen befindet sich das hydrophile Keramik. Die Mantelfläche der Farbwerkwalze weist ein also willkürliches Flächengemisch aus dicht an dicht liegenden, kleinen oleophilen Metallflächen und hydrophilen Keramikflächen auf.After hitting the hot metal-ceramic plasma the lateral surface of the steel roller form isolated or connected islands made of the oleophilic metal with which the ceramic particles were coated, for. B. from oleophilic copper, between them is the hydrophilic ceramic. The lateral surface of the inking roller has an arbitrary mixture of surfaces made up of small oleophilic metal surfaces and hydrophilic ceramic surfaces.

Anschließend wird die Keramik / Metalloberfläche der Walze geschliffen, danach poliert und schließlich mit Rasternäpfchen versehen. Das Einbringen von Rasternäpfchen mittels Laserstrahlung oder Gravur ist bekannt. Nach dem Einbringen der Näpfchen wird die Walze noch einmal geschliffen bzw. poliert.The ceramic / metal surface of the roller is then ground, then polished and finally provided with cups. The introduction of scanning cells by means of laser radiation or engraving is known. After inserting the wells, the roller is ground or polished again.

Claims (11)

  1. A roller for an inking unit of a printing machine, the surface of the roller having hydrophilic and oleophilic surface portions, characterized in that the surface of the roller has a layer of a mixture of oleophilic metal and hydrophilic metal oxide which is applied by means of plasma spraying.
  2. A roller according to Claim 1, characterized in that the oleophilic metal is copper.
  3. A roller according to Claims 1 and 2, characterized in that the hydrophilic metal oxide is chromium oxide, Cr2O3.
  4. A roller according to Claims 1 and 2, characterized in that the hydrophilic metal oxide is aluminium oxide.
  5. A roller according to Claims 1 and 2, characterized in that the hydrophilic metal oxide is zirconium oxide.
  6. A roller according to Claims 1 to 5, characterized in that 5% of the casing surface has an oleophilic surface portion.
  7. A process for manufacturing the roller according to Claims 1 to 6, characterized in that first a mixture of oleophilic metal and hydrophilic metal oxide, for example Cr2O3, is sprayed onto a casing of the roller, which casing has a thin coating of non-ferrous metal, for example nickel, by means of plasma spraying, in that the casing surface of the sprayed-on layer is then ground, and in that a number of depressions are then introduced into this ground layer.
  8. A process according to Claim 7, characterized in that the mixture comprises particles of copper and aluminium oxide.
  9. A process according to Claim 7, characterized in that the mixture comprises particles of copper and zirconium oxide.
  10. A roller according to Claims 1 to 6, characterized in that a metal layer sheathing the metal oxide particles is between 5 and 45 µm thick.
  11. A process according to Claim 8 and 9, characterized in that the size of the metal oxide particles is 20 - 45 µm.
EP94103859A 1993-03-19 1994-03-14 Inking roller for a printing machine Expired - Lifetime EP0615862B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4308993 1993-03-19
DE4308993A DE4308993A1 (en) 1993-03-19 1993-03-19 Roller for an inking unit of a printing press and method for producing the roller

Publications (2)

Publication Number Publication Date
EP0615862A1 EP0615862A1 (en) 1994-09-21
EP0615862B1 true EP0615862B1 (en) 1997-06-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94103859A Expired - Lifetime EP0615862B1 (en) 1993-03-19 1994-03-14 Inking roller for a printing machine

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DE (2) DE4308993A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2737438A1 (en) * 1995-08-01 1997-02-07 Komori Chambon ROTARY PRINTING APPARATUS, ESPECIALLY OF THE FLEXOGRAPHIC TYPE
DE19528114C2 (en) * 1995-08-01 1999-02-18 Wetzel Gmbh Ink roller and process for its manufacture
DE102007011708A1 (en) 2007-03-08 2008-09-11 Kurt Zecher Gmbh Anilox roller for printing machines and manufacturing process
DE102008000726A1 (en) * 2008-03-18 2009-09-24 Manroland Ag Roller for a printing unit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818567A (en) * 1986-10-14 1989-04-04 Gte Products Corporation Coated metallic particles and process for producing same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD154087A1 (en) * 1980-12-12 1982-02-24 Hans Johne ink fountain roller
US4601242A (en) * 1985-02-04 1986-07-22 Rockwell International Corporation Copper and ceramic composite ink metering roller
JPS62167092A (en) * 1986-01-21 1987-07-23 Mitsubishi Heavy Ind Ltd Inking roller
DE3744131A1 (en) * 1987-12-24 1989-07-06 Frankenthal Ag Albert GRID ROLLER FOR AN OFFSET INKING MACHINE AND METHOD FOR PRODUCING SUCH A GRID ROLLER

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818567A (en) * 1986-10-14 1989-04-04 Gte Products Corporation Coated metallic particles and process for producing same

Also Published As

Publication number Publication date
DE4308993A1 (en) 1994-09-22
DE59402961D1 (en) 1997-07-10
EP0615862A1 (en) 1994-09-21

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