EP0324939B1 - Rasterwalze für ein Offsetfarbwerk sowie Verfahren zur Herstellung einer derartigen Rasterwalze - Google Patents

Rasterwalze für ein Offsetfarbwerk sowie Verfahren zur Herstellung einer derartigen Rasterwalze Download PDF

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Publication number
EP0324939B1
EP0324939B1 EP88120432A EP88120432A EP0324939B1 EP 0324939 B1 EP0324939 B1 EP 0324939B1 EP 88120432 A EP88120432 A EP 88120432A EP 88120432 A EP88120432 A EP 88120432A EP 0324939 B1 EP0324939 B1 EP 0324939B1
Authority
EP
European Patent Office
Prior art keywords
layer
copper
ceramic layer
ceramic
engraved
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
EP88120432A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0324939A2 (de
EP0324939A3 (de
Inventor
Rolf Herb
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.)
Albert Frankenthal AG
Original Assignee
Albert Frankenthal 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 Albert Frankenthal AG filed Critical Albert Frankenthal AG
Publication of EP0324939A2 publication Critical patent/EP0324939A2/de
Publication of EP0324939A3 publication Critical patent/EP0324939A3/de
Application granted granted Critical
Publication of EP0324939B1 publication Critical patent/EP0324939B1/de
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
    • 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
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating

Definitions

  • the invention relates to an anilox roller according to the preamble of claim 1 and, according to a further concept of the invention, relates to a method for producing such an anilox roller.
  • An anilox roller of the type mentioned at the outset is known from US Pat . No. 4,637,310 .
  • an engraved base body is used, which is provided with a two-layer coating that follows the engraving.
  • the clear width and depth of the cups produced when the base body is engraved is changed by the subsequent coating.
  • the known arrangement results in comparatively wide webs as a result of the coating after the engraving, which is often undesirable.
  • the webs only consist of ceramic material in the area of their center and have a circumferential border made of comparatively soft material, which can have an unfavorable effect on the wear resistance that can be achieved.
  • the inner layer of the two-layer coating consists of ceramic material and the outer layer of copper, which is removed in the area of the lateral surface of the webs and remains as a lining in the area of the cells.
  • GB-A 2 049 102 shows an anilox roller in which an unengraved base body is used, which is provided with a ceramic layer which contains the cells produced by means of a laser beam.
  • This known anilox roller is suitable for flexographic printing inks and accordingly serves to transfer ink to the forme cylinder of a flexographic printing unit.
  • the object of the method is achieved according to the second concept of the invention in that the non-engraved base body is first coated with copper and then with ceramic and that the engraving is carried out on it, which penetrates the ceramic layer and extends into the copper layer.
  • the circumferential web surface advantageously consists overall of ceramic, ie. H. highly wear-resistant material.
  • the inner area of the wells is in solid copper.
  • the copper layer and the ceramic layer can each be ground to size, so that there is an exact thickness of the ceramic layer and excellent concentricity. Since the engraving is carried out as the last step, there is at the same time a high degree of accuracy in the raster geometry generated by the engraving.
  • Another advantage of the measures according to the invention can be seen in the fact that the inner copper layer can be easily removed, so that in the event of damage to the anilox roller, the entire coating can be removed and replaced in a simple manner.
  • the copper layer can be applied galvanically. This easily results in a copper layer in the desired thickness.
  • Another advantageous measure can consist in that the ceramic layer is applied using the plasma spraying process becomes. This ensures that the temperature of the substrate does not change very much during the application of the ceramic layer, so that the already existing copper layer is not damaged.
  • the engraving can be carried out using a laser beam. This measure ensures high accuracy.
  • the short inking unit on which FIG. 1 is based consists of a rubberized applicator roller 2 which cooperates with a plate cylinder 1 which can be covered with hard offset printing inks and which has the same diameter as the plate cylinder 1 and an anilox roller 3 which interacts with the applicator roller 2 and has a smaller diameter.
  • the applicator roller 2 also acts a dampening unit 4 together.
  • the circumference of the anilox roller 3 is provided with cups 5 indicated in an enlarged manner in FIG.
  • the cups 5 are filled with paint, the webs 6 are scraped off, so that there is an exact dosage of the color corresponding to the capacity of the cups 5.
  • the ink supply to the anilox roller 3 and the doctoring take place here by means of a chamber doctor blade 7. This consists of two doctor blades lying against the anilox roller 3 with a negative angle of attack, which delimit a chamber to which ink is applied.
  • the anilox roller 3, as can be seen in FIGS. 2 to 4, consists of a steel core 8, which can contain the lateral bearing journals and is coated on the circumference.
  • the steel core 8, which has a cylindrical, uninterrupted lateral surface, is first provided with an annular, uninterrupted copper layer 9. This can be applied galvanically.
  • the thickness of the copper layer 9 is approximately 50 ⁇ , which can easily be achieved with galvanic application. After the copper layer 9 has been produced, it is machined to size on the circumference, for example by a grinding and / or polishing process, as indicated in FIG. 2 by a processing symbol.
  • the circumferentially machined copper surface which accordingly has an exact cylindricity, is then, as can be seen from FIG. 3, with an uninterrupted, annular ceramic layer 10, for example in the form of a CrO layer.
  • This ceramic layer 10 can be applied in a plasma spraying process. An electric arc is generated here, which is driven out of a nozzle by a gas stream into which the ceramic material is introduced.
  • the temperature of the substrate increases only in the order of 100 ° C. to 200 ° C., so that the copper layer 9 is not damaged when the ceramic layer 10 is applied.
  • the ceramic layer 10 After completion of the ceramic layer 10, this is also processed, as indicated in FIG. 3 by a processing symbol. H. ground and / or polished and possibly lapped.
  • the processing operations after the application of the copper layer 9 and after the application of the ceramic layer 10 result not only in a high surface quality, but also in an exact, uniform thickness of the ceramic layer 10 and a high concentricity.
  • the thickness of the ceramic layer 10 can be approximately 10 ⁇ to 15 ⁇ , that is less than a third of the copper layer 9.
  • the double-coated roller body is, as indicated in FIG. 4, engraved on the circumference for the production of the cells 5.
  • the engraving depth is chosen so that the cups 5 penetrate the outer ceramic layer 10 and penetrate into the copper layer 9 without completely penetrating it.
  • the wells 5 are accordingly in solid copper in their lower region.
  • the well depth can be approximately 25 ⁇ to 30 ⁇ here be about 28 ⁇ .
  • the outside of the roller body which is coated with ceramic material, is engraved in a manner known per se by means of a laser beam, which ensures high accuracy.
  • the webs 6 produced by the engraving, as FIG. 4 clearly shows, consist of ceramic material in the area of their entire surface and have sharp, wear-resistant edges.
  • the laser beam can be set so that it penetrates the ceramic layer and penetrates to the desired depth in the copper layer. If the cell depth is to be increased subsequently, this can be done by etching, which, like in gravure printing, can be carried out without removing the anilox roller. If the cell is to be reduced in size, this can be achieved by galvanic copper plating. Accordingly, easy repair of the anilox roller is guaranteed.
  • the laser beam is simply adjusted so that it only penetrates the ceramic layer.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)
EP88120432A 1987-12-24 1988-12-07 Rasterwalze für ein Offsetfarbwerk sowie Verfahren zur Herstellung einer derartigen Rasterwalze Expired - Lifetime EP0324939B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3744131 1987-12-24
DE19873744131 DE3744131A1 (de) 1987-12-24 1987-12-24 Rasterwalze fuer ein offsetfarbwerk sowie verfahren zur herstellung einer derartigen rasterwalze

Publications (3)

Publication Number Publication Date
EP0324939A2 EP0324939A2 (de) 1989-07-26
EP0324939A3 EP0324939A3 (de) 1991-04-03
EP0324939B1 true EP0324939B1 (de) 1994-03-09

Family

ID=6343630

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120432A Expired - Lifetime EP0324939B1 (de) 1987-12-24 1988-12-07 Rasterwalze für ein Offsetfarbwerk sowie Verfahren zur Herstellung einer derartigen Rasterwalze

Country Status (4)

Country Link
US (2) US4879791A (enrdf_load_stackoverflow)
EP (1) EP0324939B1 (enrdf_load_stackoverflow)
JP (1) JPH072420B2 (enrdf_load_stackoverflow)
DE (2) DE3744131A1 (enrdf_load_stackoverflow)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2740865B2 (ja) * 1988-10-03 1998-04-15 株式会社東京機械製作所 印刷用ローラー
US4912824A (en) * 1989-03-14 1990-04-03 Inta-Roto Gravure, Inc. Engraved micro-ceramic-coated cylinder and coating process therefor
DE4007130C1 (enrdf_load_stackoverflow) * 1990-03-07 1991-06-27 Kurt Zecher Gmbh, 4790 Paderborn, De
DE4036661C1 (enrdf_load_stackoverflow) * 1990-11-17 1992-06-17 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
JPH0496347U (enrdf_load_stackoverflow) * 1991-01-30 1992-08-20
DE4113903A1 (de) * 1991-04-27 1992-10-29 Frankenthal Ag Albert Walze fuer eine druckmaschine
US5328587A (en) * 1992-11-16 1994-07-12 Ir International, Inc. Method of making machine-engraved seamless tube
DE4308993A1 (de) * 1993-03-19 1994-09-22 Koenig & Bauer Ag Walze für ein Farbwerk einer Druckmaschine und Verfahren zur Herstellung der Walze
US5417162A (en) * 1993-07-01 1995-05-23 The Ensign-Bickford Company Detonation coupling device
US5411462A (en) * 1993-08-30 1995-05-02 Link; Terry G. Lightweight ink transfer roll
US5415094A (en) * 1993-10-18 1995-05-16 Morrone; Ross F. Apparatus and method for inking of an engraving die utilizing a selectively rotatable inking roller with external ribbing thereon
DE4408615C2 (de) * 1994-03-15 1996-01-11 Roland Man Druckmasch Näpfchenwalze innerhalb eines Auftragswerks einer Rotationsdruckmaschine
US5786051A (en) * 1994-07-26 1998-07-28 Kurt Zecher Gmbh Ink transfer roller with interchangeable cover
DE19506600A1 (de) * 1995-02-24 1996-08-29 Krupp Polysius Ag Walze, Verfahren zur Herstellung einer Walze sowie Gutbettwalzenmühle
IL116123A (en) 1995-11-23 1999-07-14 Scitex Corp Ltd System and method for printing
US5688552A (en) * 1995-12-22 1997-11-18 Panel Prints, Inc. Apparatus and method for preparing cylinders in offset lithographic printing presses
US5840386A (en) * 1996-02-22 1998-11-24 Praxair S.T. Technology, Inc. Sleeve for a liquid transfer roll and method for producing it
FR2748422B1 (fr) 1996-05-10 1998-06-12 Rollin Sa Systeme de transfert d'un produit liquide plus ou moins visqueux sur un support, procede de fabrication d'une telle surface et blanchet d'impression offset realise avec cette surface
GB9828305D0 (en) * 1998-12-23 1999-02-17 Eastman Kodak Co Device to reduce electrostatic pattern transfer in coating processes
DE102005008487C5 (de) * 2005-02-24 2011-08-18 Praxair S.T. Technology, Inc., Conn. Beschichteter Körper aus Kohlefaser verstärktem Kunststoff für Papier- und Druckmaschinen, insbesondere Walze, und Verfahren zum Herstellen eines solchen Körpers
DE102005030918A1 (de) * 2005-06-30 2007-01-04 Man Roland Druckmaschinen Ag Farbduktorwalze einer Rollendruckmaschine
CN101212876A (zh) * 2006-12-29 2008-07-02 深圳富泰宏精密工业有限公司 金属外壳及其制作方法
DE102007011708A1 (de) * 2007-03-08 2008-09-11 Kurt Zecher Gmbh Rasterwalze für Druckmaschinen sowie Herstellungsverfahren
KR101076049B1 (ko) * 2009-07-07 2011-10-24 도레이첨단소재 주식회사 광학필름 제조용 롤의 렌즈 형상 제조방법 및 이로부터 렌즈 형상이 형성된 광학필름 제조용 롤
DE102010034594A1 (de) 2010-08-17 2012-02-23 Manroland Ag Zylinder einer Druckmaschine mit mindestens einem Spannkanal und Verfahren zur Herstellung eines Zylinders
DE102012207398A1 (de) * 2012-05-04 2013-09-19 Voith Patent Gmbh Verfahren zum Herstellen einer Walze und Walze

Citations (1)

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Publication number Priority date Publication date Assignee Title
GB2049102A (en) * 1979-05-03 1980-12-17 Csi Corp Transfer roll

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DE1675536U (de) * 1953-07-31 1954-04-29 Carl Honsel Farbwalze als rasterwalze zum einfaerben von hochdruckformen im anilindruckverfahren.
US4015100A (en) * 1974-01-07 1977-03-29 Avco Everett Research Laboratory, Inc. Surface modification
US4009658A (en) * 1974-04-26 1977-03-01 Pamarco Incorporated Fluid metering roll and method of making the same
US4210078A (en) * 1974-06-24 1980-07-01 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Apparatus for use on printing presses to insure optimum color density and to assist in making corrective adjustment
US3994221A (en) * 1975-10-02 1976-11-30 World Color Press, Inc. Sheeter for use with printing press and adding provision for arresting, squaring and diverting of sheet
US4197798A (en) * 1975-10-08 1980-04-15 Bardin Karl D Metal plated plastic base intaglio printing cylinders and plates
US4301730A (en) * 1977-09-29 1981-11-24 Pamarco Incorporated Anilox roll and method of making the same
US4301583A (en) * 1979-02-15 1981-11-24 Consolidated Engravers Corporation Fluid metering roller
US4503769A (en) * 1982-06-21 1985-03-12 Armotek Industries, Inc. Metal coated thin wall plastic printing cylinder for rotogravure printing
US4537127A (en) * 1984-09-12 1985-08-27 Rockwell International Corporation Black oxide lithographic ink metering roller
US4601242A (en) * 1985-02-04 1986-07-22 Rockwell International Corporation Copper and ceramic composite ink metering roller
US4819558A (en) * 1985-04-18 1989-04-11 Pamarco Incorporated High efficiency fluid metering roll
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

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Publication number Priority date Publication date Assignee Title
GB2049102A (en) * 1979-05-03 1980-12-17 Csi Corp Transfer roll

Also Published As

Publication number Publication date
JPH01222961A (ja) 1989-09-06
EP0324939A2 (de) 1989-07-26
DE3744131A1 (de) 1989-07-06
DE3888338D1 (de) 1994-04-14
DE3744131C2 (enrdf_load_stackoverflow) 1990-01-04
US5001821A (en) 1991-03-26
US4879791A (en) 1989-11-14
EP0324939A3 (de) 1991-04-03
JPH072420B2 (ja) 1995-01-18

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