EP0486855B2 - Engraved roller - Google Patents

Engraved roller Download PDF

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Publication number
EP0486855B2
EP0486855B2 EP91118478A EP91118478A EP0486855B2 EP 0486855 B2 EP0486855 B2 EP 0486855B2 EP 91118478 A EP91118478 A EP 91118478A EP 91118478 A EP91118478 A EP 91118478A EP 0486855 B2 EP0486855 B2 EP 0486855B2
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EP
European Patent Office
Prior art keywords
layer
process according
ink
grooves
wear
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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
EP91118478A
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German (de)
French (fr)
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EP0486855A1 (en
EP0486855B1 (en
Inventor
Thomas John
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Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0486855A1 publication Critical patent/EP0486855A1/en
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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y10T29/4956—Fabricating and shaping roller work contacting surface element
    • Y10T29/49563—Fabricating and shaping roller work contacting surface element with coating or casting about a core
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y10T29/49565—One-piece roller making

Definitions

  • the invention relates to a method for manufacturing an anilox roller for an inking unit of an offset rotary printing press, the bridges from one wear-resistant, hard material and cell with a surface of an ink-accepting Has material.
  • a coating consisting of hard ceramic is applied to a steel core, which is then engraved and provided with a color-friendly coating.
  • the hard ceramic coating is also engraved using a laser beam.
  • the US patent 47 73 143 discloses according to claim 19 and Figures 1 and 2 a manufacturing method of an anilox roller, in which wells are engraved in an oleophilic layer of the roller surface, then a spiral groove is worked out of this layer, then this groove a hard Material is filled so that a spiral layer is formed, which runs flat with or slightly raised over the oleophilic layer of the anilox roller. Both the oleophilic surface and the hard spiral rail can then be finished.
  • the disadvantage here is that the material filled into the groove can make adjacent cells usable, which in turn have to be reworked.
  • an anilox roller 1 a roll core 2, the diameter of some Tenths of a millimeter smaller than the final diameter the anilox roller 1.
  • the roller core 2 is in Embodiment made of steel.
  • the roll core 2 is made with an ink-accepting material existing layer 3 coated.
  • Layer 3 can e.g. are made of copper. This material repels water and at the same time has a high Affinity for color. Instead of copper there is also Use of nickel, asphalt or a suitable one Plastic, such as nylon 11, possible.
  • the Layer 3 can be sprayed on or evaporated on depending on the material used, galvanically, or applied by chemical deposition become.
  • Fig. 2 are in the ink-accepting layer 3 advantageously by partially removing this layer 3 up to the roller core 2 grooves 4 incorporated.
  • the grooves 4 are, as indicated in Fig. 3 is, obliquely to the axis in the exemplary embodiment the anilox roller 1 arranged to run.
  • the Incorporation of the grooves 4 can be done by a simple Engraving processes, e.g. Etching.
  • Another way to create the grooves 4 is the surface of the roll core 2 at the locations provided for the grooves 4 are, before applying the ink-accepting Cover layer 3.
  • the cover can by means of lacquer strips, which are made after application Layer 3 can be removed.
  • a hard, wear-resistant material existing layer 6 introduced in such a way that anchoring formed on the one hand with the ink-accepting layer 3 on the other hand, if the grooves on the Go through the roller core, also with this.
  • Material to form this hard, wear-resistant Layer 6 can e.g. Chromium dioxide or Find aluminum oxide.
  • the bringing in This layer 6 can be plasma sprayed respectively.
  • Layer 6 initially covers as a continuous layer the peripheral surface of the ink-accepting layer 3. To achieve a flat, even surface of the anilox roller 1 is a subsequent surface treatment sensible, in which the hard layer 6 above the ink-accepting layer 3 is removed.
  • This Processing step is based on Fig. 5, the a surface that is ground and polished on the circumference 7 shows. The surface 7 is smoothed that the layer 6 only the grooves 4 in the ink-accepting layer 3 fills and wear-resistant Forms webs 8.
  • the thickness of the ink-accepting layer 3 exceeds the depth of the cells 9.
  • the depth of the cells 9 is of the order of magnitude of approx. 20 ⁇ .
  • the width of the grooves 4 and thus the Web 8 is approximately in the order of depth the well 9.
  • a major advantage of this procedure is that the load-bearing, wear-resistant Layer 6 does not have to be engraved. Because the engraving always takes place in the ink-accepting layer 3, which is relatively soft, it turns out comparatively simple and allows an inexpensive Production.
  • the webs 8 are in layer 3 of ink-accepting, water-repellent Material embedded and in uniform Spaced from each other. Between the webs 8 are in the ink-accepting Layer 3 also at regular intervals the wells 9 are engraved. The wells 9 are on the one hand through the wear-resistant webs 8 and on the other hand by webs 10, which from the ink-accepting Layer 3 are formed, bordered. However, the webs 10 can also be made of wear-resistant Material in the same way as that Bars 8 are made. This requires an induction the grooves 4 as described in above Way in a cross-diagonal arrangement on the Anilox roller 1 ahead.
  • the grooves can be Formation of webs 11 on the anilox roller 1 also be arranged hexagonally. Between the bridges 11 are shape-matched in the ink-accepting layer 3 Cup 12 engraved.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung einer Rasterwalze für ein Farbwerk einer Offset-Rotationsdruckmaschine, die Stege aus einem verschleißfesten, harten Werkstoff und Näpfchen mit einer Oberfläche aus einem farbannehmenden Werkstoff aufweist.The invention relates to a method for manufacturing an anilox roller for an inking unit of an offset rotary printing press, the bridges from one wear-resistant, hard material and cell with a surface of an ink-accepting Has material.

Aus der DE-OS 38 22 692 ist eine Rasterwalze bekannt, bei der der Walzenkern eine verschleißfeste Keramik- oder Metallschicht trägt. Diese Schicht ist mit einer Gravur zur Aufnahme einer Schicht aus einem farbannehmenden, wasserabstoßenden Werkstoff versehen. Die zunächst mit Überschuß aufgebrachte farbannehmende Schicht wird soweit abgetragen, daß die Oberseiten der Stege der darunter liegenden verschleißfesten Schicht freigelegt sind. Außerdem sind in diese Schicht die Näpfchen eingebracht. Die Gravur der verschleißfesten Hartschicht wird mittels eines Laserstrahls durchgeführt und ist somit vergleichsweise teuer.From DE-OS 38 22 692 is an anilox roller known in which the roller core is wear-resistant Ceramic or metal layer. This Is engraved to accommodate a layer Layer of an ink-accepting, water-repellent Provided material. The first with Excess applied ink-accepting layer is removed so far that the tops of the Bridges of the underlying wear-resistant Layer are exposed. They are also in this Layer the wells introduced. The engraving of the Wear-resistant hard layer is created using a laser beam performed and is therefore comparative expensive.

Dies gilt auch für die in der DE-OS 37 44 131 offenbarte Rasterwalze, bei der ein Grundkörper zunächst mit farbfreundlichem Material, danach mit Keramik beschichtet wird und darauf die Gravur erfolgt.This also applies to the anilox roller disclosed in DE-OS 37 44 131, in which a base body is first coated with color-friendly material, then with ceramic, and then engraved.

Auch bei der aus der DE-OS 37 13 027 bekannten Rasterwalze wird auf einen Stahlkern eine aus Hartkeramik bestehende Beschichtung aufgebracht, die anschließend graviert und mit einem farbfreundlichen Überzug versehen wird. Die Gravur der hartkeramischen Beschichtung wird ebenfalls mittels eines Laserstrahls durchgeführt.Also in the anilox roller known from DE-OS 37 13 027, a coating consisting of hard ceramic is applied to a steel core, which is then engraved and provided with a color-friendly coating. The hard ceramic coating is also engraved using a laser beam.

Wie beispielhaft die EP 0 190 390 B1 (Fig. 3 bis 5) zeigt, werden Vertiefungen mit geometrischen Formen in eine farbannehmende Schicht (Kupferschicht) eingebracht bzw. graviert, die als Näpfchen bzw. "cells pattern" - also "Näpfchenmuster"- bezeichnet werden, entsprechend dem Farbbedarf.As exemplified by EP 0 190 390 B1 (FIGS. 3 to 5), depressions with geometric shapes are introduced or engraved in an ink-accepting layer (copper layer), which is referred to as a cell or cell pattern according to the color requirements.

Das US-Patent 47 73 143 offenbart gemäss Anspruch 19 und den Figuren 1 und 2 ein Herstellungsverfahren einer Rasterwalze, bei der Näpfchen in eine oleophile Schicht der Walzenoberfläche eingraviert werden, dann ein mit spiralförmige Nut aus dieser Schicht herausgearbeitet wird, dann diese Nut einem harten Material ausgefüllt wird, so daß eine spiralförmige Schicht entsteht, die plan mit oder etwas erhaben über der Oleophilen Schicht der Rasterwalze verläuft. Sowohl die oleophile Oberfläche, als auch die harte spiralförmige Schiene können dann noch endbearbeitet werden.The US patent 47 73 143 discloses according to claim 19 and Figures 1 and 2 a manufacturing method of an anilox roller, in which wells are engraved in an oleophilic layer of the roller surface, then a spiral groove is worked out of this layer, then this groove a hard Material is filled so that a spiral layer is formed, which runs flat with or slightly raised over the oleophilic layer of the anilox roller. Both the oleophilic surface and the hard spiral rail can then be finished.

Nachteilig dabei ist, dass das in die Nut eingefüllte Material benachbarte Näpfchen umbrauchbar machen kann die dann wiederum nachgearbeitet werden müssen.The disadvantage here is that the material filled into the groove can make adjacent cells usable, which in turn have to be reworked.

Hiervon ausgehend ist es daher die Aufgabe der Erfindung, ein derartiges aus der US 4,773,143 bekanntes Verfahren zur Schaffung einer Rasterwalze zu vereinfachen.Based on this, it is therefore the task the invention, a such a method known from US 4,773,143 Simplify creation of an anilox roller.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved by solved the features of claim 1.

In den Figuren der Zeichnung ist die verfahrungsmäßige Lösung schematisch verdeutlicht. Es zeigen:

Fig. 1
einen Teilschnitt durch eine Rasterwalze nach dem ersten Verfahrensschritt;
Fig. 2
einen Teilschnitt durch die Rasterwalze nach dem zweiten Verfahrensschritt;
Fig. 3
eine Teilaufsicht der Rasterwalze nach dem zweiten Verfahrensschritt;
Fig. 4 bis 6
Teilschnitte durch die Rasterwalze nach jeweils einem weiteren Verfahrensschritt;
Fig. 7
eine Teilaufsicht der fertiggestellten Rasterwalze.
The procedural solution is schematically illustrated in the figures of the drawing. Show it:
Fig. 1
a partial section through an anilox roller after the first process step;
Fig. 2
a partial section through the anilox roller after the second step;
Fig. 3
a partial view of the anilox roller after the second step;
4 to 6
Partial cuts through the anilox roller after each additional process step;
Fig. 7
a partial supervision of the finished anilox roller.

Wie Fig. 1 zeigt, weist eine Rasterwalze 1 einen Walzenkern 2 auf, dessen Durchmesser einige Zehntel Millimeter kleiner als der Enddurchmesser der Rasterwalze 1 ist. Der Walzenkern 2 ist im Ausführungsbeispiel aus Stahl. Der Walzenkern 2 wird mit einer aus farbannehmendem Werkstoff bestehenden Schicht 3 überzogen. Die Schicht 3 kann z.B. aus Kupfer bestehen. Dieses Material stößt Wasser ab und besitzt gleichzeitig eine hohe Affinität zur Farbe. Anstelle von Kupfer ist auch die Verwendung von Nickel, Asphalt oder eines geeigneten Kunststoffes, wie Nylon 11, möglich. Die Schicht 3 kann aufgespritzt bzw. aufgedampft oder in Abhängigkeit des verwendeten Materials galvanisch, bzw. durch chemische Abscheidung aufgebracht werden.As shown in FIG. 1, an anilox roller 1 a roll core 2, the diameter of some Tenths of a millimeter smaller than the final diameter the anilox roller 1. The roller core 2 is in Embodiment made of steel. The roll core 2 is made with an ink-accepting material existing layer 3 coated. Layer 3 can e.g. are made of copper. This material repels water and at the same time has a high Affinity for color. Instead of copper there is also Use of nickel, asphalt or a suitable one Plastic, such as nylon 11, possible. The Layer 3 can be sprayed on or evaporated on depending on the material used, galvanically, or applied by chemical deposition become.

In Fig. 2 sind in der farbannehmenden Schicht 3 durch partielles Entfernen dieser Schicht 3 vorteilhafterweise bis auf den Walzenkern 2 Nuten 4 eingearbeitet. Die Nuten 4 sind, wie in Fig. 3 angedeutet ist, im Ausführungsbeispiel schräg zur Achse der Rasterwalze 1 verlaufend angeordnet. Die Einarbeitung der Nuten 4 kann durch ein einfaches Gravurverfahren, wie z.B. Ätzen erfolgen.In Fig. 2 are in the ink-accepting layer 3 advantageously by partially removing this layer 3 up to the roller core 2 grooves 4 incorporated. The grooves 4 are, as indicated in Fig. 3 is, obliquely to the axis in the exemplary embodiment the anilox roller 1 arranged to run. The Incorporation of the grooves 4 can be done by a simple Engraving processes, e.g. Etching.

Eine andere Möglichkeit, die Nuten 4 zu schaffen, besteht darin, die Oberfläche des Walzenkernes 2 an den Stellen, die für die Nuten 4 vorgesehen sind, vor dem Aufbringen der farbannehmenden Schicht 3 abzudecken. Die Abdeckung kann mittels Lackstreifen erfolgen, die nach dem Aufbringen der Schicht 3 entfernt werden.Another way to create the grooves 4 is the surface of the roll core 2 at the locations provided for the grooves 4 are, before applying the ink-accepting Cover layer 3. The cover can by means of lacquer strips, which are made after application Layer 3 can be removed.

In einem weiteren Arbeitsgang, wird, wie in Fig. 4 gezeigt ist, in die Nuten 4 eine aus einem harten, verschleißfesten Werkstoff bestehende Schicht 6 eingebracht, in der Weise, daß eine Verankerung einerseits mit der farbannehmenden Schicht 3 gebildet wird, andererseits, wenn die Nuten auf den Walzenkern durchgehen, auch mit diesem. Als Werkstoff zur Bildung dieser harten, verschleißfesten Schicht 6 kann z.B. Chromdioxyd oder Aluminiumoxyd Verwendung finden. Das Einbringen dieser Schicht 6 kann im Plasmaspritzverfahren erfolgen. Die Schicht 6 bedeckt zunächst als durchlaufende Schicht die umfangsseitige Fläche der farbannehmenden Schicht 3. Zur Erzielung einer ebenen, gleichmäßigen Oberfläche der Rasterwalze 1 ist eine anschließende Oberflächenbearbeitung sinnvoll, bei der die harte Schicht 6 oberhalb der farbannehmenden Schicht 3 entfernt wird. Dieser Bearbeitungsschritt liegt der Fig. 5 zugrunde, die eine umfangsseitig geschliffene und polierte Oberfläche 7 aufzeigt. Die Oberfläche 7 wird so geglättet, daß die Schicht 6 nur noch die Nuten 4 in der farbannehmenden Schicht 3 ausfüllt und verschleißfeste Stege 8 bildet.In a further operation, as shown in Fig. 4 is shown, in the grooves 4 one of a hard, wear-resistant material existing layer 6 introduced in such a way that anchoring formed on the one hand with the ink-accepting layer 3 on the other hand, if the grooves on the Go through the roller core, also with this. As Material to form this hard, wear-resistant Layer 6 can e.g. Chromium dioxide or Find aluminum oxide. The bringing in This layer 6 can be plasma sprayed respectively. Layer 6 initially covers as a continuous layer the peripheral surface of the ink-accepting layer 3. To achieve a flat, even surface of the anilox roller 1 is a subsequent surface treatment sensible, in which the hard layer 6 above the ink-accepting layer 3 is removed. This Processing step is based on Fig. 5, the a surface that is ground and polished on the circumference 7 shows. The surface 7 is smoothed that the layer 6 only the grooves 4 in the ink-accepting layer 3 fills and wear-resistant Forms webs 8.

Im letzten Arbeitsschritt werden, wie in Fig. 6 zu sehen ist, in die farbannehmende Schicht 3 zwischen den Stegen 8 Näpfchen 9 eingraviert. Dies kann in bekannter Weise, z.B. durch Ätzen, Molettieren, Stichelgravur oder mittels eines Elektronenstrahls erfolgen.In the last step, as in FIG. 6 can be seen in the ink-accepting layer 3 8 wells 9 are engraved between the webs. This can be done in a known manner, e.g. by etching, Mettling, engraving or using an electron beam respectively.

Die Dicke der farbannehmenden Schicht 3 übersteigt die Tiefe der Näpfchen 9. Die Tiefe der Näpfchen 9 liegt in der Größenordnung von ca. 20 µ. Die Breite der Nuten 4 und somit der Stege 8 liegt etwa in der Größenordnung der Tiefe der Näpfchen 9.The thickness of the ink-accepting layer 3 exceeds the depth of the cells 9. The The depth of the cells 9 is of the order of magnitude of approx. 20 µ. The width of the grooves 4 and thus the Web 8 is approximately in the order of depth the well 9.

Die genannten Maßnahmen ergeben einen mehrschichtigen Aufbau der Rasterwalze 1, wobei für jede Schicht 3, 6 eine optimale Materialwahl möglich ist.The measures mentioned result in one multilayer structure of the anilox roller 1, wherein an optimal choice of material for each layer 3, 6 is possible.

Ein wesentlicher Vorteil dieser Verfahrensweise liegt darin, daß die tragende, verschleißfeste Schicht 6 nicht graviert werden muß. Da die Gravur immer in der farbannehmenden Schicht 3 erfolgt, die relativ weich ist, gestaltet sie sich vergleichsweise einfach und ermöglicht eine kostengünstige Herstellung.A major advantage of this procedure is that the load-bearing, wear-resistant Layer 6 does not have to be engraved. Because the engraving always takes place in the ink-accepting layer 3, which is relatively soft, it turns out comparatively simple and allows an inexpensive Production.

Gemäß der Fig. 7 weist bei dem Ausführungsbeispiel die Oberfläche der Rasterwalze 1 schräg zu ihrer Achse verlaufende, sie umfangsseitig umgebende, verschleißfeste Stege 8 auf. Die Stege 8 sind in der Schicht 3 aus farbannehmendem, wasserabstoßendem Material eingebettet und in gleichmäßigen Abständen zueinander angeordnet. Zwischen den Stegen 8 sind in die farbannehmende Schicht 3 ebenfalls in gleichmäßigen Abständen die Näpfchen 9 eingraviert. Die Näpfchen 9 sind einerseits durch die verschleißfesten Stege 8 und andererseits durch Stege 10, die aus der farbannehmenden Schicht 3 gebildet werden, berandet. Die Stege 10 können jedoch ebenfalls aus verschleißfestem Werkstoff in gleicher Weise wie die Stege 8 hergestellt werden. Dies setzt eine Einarbeitung der Nuten 4 wie in oben beschriebener Weise in einer kreuzdiagonalen Anordnung auf der Rasterwalze 1 voraus.7 points in the embodiment the surface of the anilox roller 1 obliquely running on their axis, surrounding them on the circumference, wear-resistant webs 8 on. The webs 8 are in layer 3 of ink-accepting, water-repellent Material embedded and in uniform Spaced from each other. Between the webs 8 are in the ink-accepting Layer 3 also at regular intervals the wells 9 are engraved. The wells 9 are on the one hand through the wear-resistant webs 8 and on the other hand by webs 10, which from the ink-accepting Layer 3 are formed, bordered. However, the webs 10 can also be made of wear-resistant Material in the same way as that Bars 8 are made. This requires an induction the grooves 4 as described in above Way in a cross-diagonal arrangement on the Anilox roller 1 ahead.

Wie in Fig. 8 gezeigt ist, können die Nuten zur Bildung von Stegen 11 auf der Rasterwalze 1 auch hexagonal angeordnet sein. Zwischen den Stegen 11 sind in die farbannehmende Schicht 3 formangepaßte Näpfchen 12 eingraviert.As shown in Fig. 8, the grooves can be Formation of webs 11 on the anilox roller 1 also be arranged hexagonally. Between the bridges 11 are shape-matched in the ink-accepting layer 3 Cup 12 engraved.

Claims (12)

  1. Process for the production of a screen roller for an inking unit in an offset rotary printing machine which has lands of a wear-resistant, hard material and cells having a surface made of an ink-receiving material, characterised in that a layer (3) of the ink-receiving material is applied onto a roller core (2) of the screen roller (1) to a thickness exceeding the depth of the cells (9), into which larger grooves (4) are introduced, then a layer (6) of a wear-resistant, hard material for forming the lands (8) is applied, completely filling the grooves (4), in that the layer (6) of the hard, wear-resistant material first of all covers at least partially the peripheral surface of the layer (3) and is then removed from the areas outside the lands (8), and the cells (9) are introduced into the layer (3) of the ink-receiving material in such a way that the cells (9) are edged at least on one side by the wear-resistant lands (8).
  2. Process according to claim 1, characterised in that the grooves (4) pass through to the roller core (2).
  3. Process according to claim 1, characterised in that the grooves (4) are arranged to extend obliquely to the axis of the screen roller (1).
  4. Process according to claim 1, characterised in that the grooves (4) are arranged cross-diagonally.
  5. Process according to claim 1, characterised in that the grooves (4) are arranged hexagonally.
  6. Process according to one of the preceding claims, characterised in that the grooves (4) are produced by removing material from the ink-receiving layer (3).
  7. Process according to claim 6, characterised in that removal of the material is effected by etching.
  8. Process according to one of claims 1 to 5, characterised in that the grooves (4) are produced by covering the surface of the roller core (2) before applying the layer (3) of the ink-receiving material.
  9. Process according to claim 8, characterised in that the covering is effected by applying strips of lacquer.
  10. Process according to one of the preceding claims, characterised in that the ink-receiving layer (3) is applied by flame-spraying.
  11. Process according to one of the preceding claims, characterised in that when using copper for the ink-receiving layer (3) this layer (3) is applied galvanically.
  12. Process according to one of the preceding claims, characterised in that the cells (9) are produced by engraving, embossing or etching.
EP91118478A 1990-11-17 1991-10-30 Engraved roller Expired - Lifetime EP0486855B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4036661A DE4036661C1 (en) 1990-11-17 1990-11-17
DE4036661 1990-11-17

Publications (3)

Publication Number Publication Date
EP0486855A1 EP0486855A1 (en) 1992-05-27
EP0486855B1 EP0486855B1 (en) 1994-12-07
EP0486855B2 true EP0486855B2 (en) 2002-01-09

Family

ID=6418448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91118478A Expired - Lifetime EP0486855B2 (en) 1990-11-17 1991-10-30 Engraved roller

Country Status (4)

Country Link
US (1) US5191703A (en)
EP (1) EP0486855B2 (en)
JP (1) JPH04269546A (en)
DE (2) DE4036661C1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
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DE4113903A1 (en) * 1991-04-27 1992-10-29 Frankenthal Ag Albert ROLLER FOR A PRINTING MACHINE
US5370052A (en) * 1993-03-15 1994-12-06 Man Roland Druckmaschinen Ag Method of controlling the quantity of printing ink and reconditioning used anilox rollers
US5411462A (en) * 1993-08-30 1995-05-02 Link; Terry G. Lightweight ink transfer roll
DE19515393B4 (en) * 1995-04-26 2004-01-15 Man Roland Druckmaschinen Ag Surface structure carrying substrates, preferably for printing press cylinders or their elevators
DE19528114C2 (en) * 1995-08-01 1999-02-18 Wetzel Gmbh Ink roller and process for its manufacture
DE19841785C2 (en) * 1998-09-12 2001-02-22 Inst Mikrotechnik Mainz Gmbh Process for producing a body with microstructures from thermally sprayed material
DE19847108C2 (en) * 1998-10-13 2002-10-24 Windmoeller & Hoelscher anilox roller
GB9828305D0 (en) * 1998-12-23 1999-02-17 Eastman Kodak Co Device to reduce electrostatic pattern transfer in coating processes
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DE4036661C1 (en) 1992-06-17
US5191703A (en) 1993-03-09
EP0486855A1 (en) 1992-05-27
EP0486855B1 (en) 1994-12-07
JPH04269546A (en) 1992-09-25
DE59103805D1 (en) 1995-01-19

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