EP0287002A2 - Rouleau tramé dans un dispositif d'encrage offset et procédé de fabrication d'un tel rouleau tramé - Google Patents

Rouleau tramé dans un dispositif d'encrage offset et procédé de fabrication d'un tel rouleau tramé Download PDF

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Publication number
EP0287002A2
EP0287002A2 EP88105687A EP88105687A EP0287002A2 EP 0287002 A2 EP0287002 A2 EP 0287002A2 EP 88105687 A EP88105687 A EP 88105687A EP 88105687 A EP88105687 A EP 88105687A EP 0287002 A2 EP0287002 A2 EP 0287002A2
Authority
EP
European Patent Office
Prior art keywords
coating
hard ceramic
anilox roller
cups
webs
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
EP88105687A
Other languages
German (de)
English (en)
Other versions
EP0287002A3 (en
EP0287002B1 (fr
Inventor
Rudolf 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.)
Koenig and Bauer 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6325830&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0287002(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Albert Frankenthal AG filed Critical Albert Frankenthal AG
Publication of EP0287002A2 publication Critical patent/EP0287002A2/fr
Publication of EP0287002A3 publication Critical patent/EP0287002A3/de
Application granted granted Critical
Publication of EP0287002B1 publication Critical patent/EP0287002B1/fr
Anticipated expiration legal-status Critical
Revoked 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 an anilox roller for an inking unit assigned to an offset printing press, in particular a short inking unit, the surface of which is provided with cups which are separated from one another by webs and which cooperates with at least one squeegee device which is arranged around its circumference and is preferably in the form of a chambered doctor blade for the production of such anilox roller with wells separated from each other by scrapable webs.
  • a short inking unit for an offset printing press which has an anilox roller which is acted on with color and of the type mentioned above.
  • This anilox roller which is to be designed as a steel roller in the known arrangement, interacts with an applicator roller to which a fountain solution is supplied in addition to the ink.
  • the dampening solution required for wetting the printing plate will reach the anilox roller via the applicator roller and adversely affect the adhesion of the ink in the wells and thus the filling of the wells with ink.
  • the consequence of this can be fluctuations in the amount of ink transferred and thus fluctuations in color density in the printed image.
  • anilox rollers designed as pure steel rollers there can be severe wear in the region of the surface having the anvil system.
  • the object of the anilox roller is achieved according to the invention in that the webs are at least partially made of hard ceramic material and in that the cups Chen have a hydrophobic lining.
  • the procedural solution consists in applying a coating made of hard ceramic to a steel core, which is then engraved and, after the engraving, provided with a coating consisting of hydrophobic, color and cleaning agent-resistant material.
  • the coating consisting of hard ceramic material can be ground and polished, preferably lapped, after the engraving and before the coating with hydrophobic material. This measure ensures that the edge of the engraved cells is deburred and smoothed and that a very fine surface is achieved in the area of the circumferential surface of the webs, which has an advantageous effect on the squeegee service life.
  • Another useful measure can be that the thickness of the coating made of hard ceramic material is about three times as thick as the depth of the cells. This ensures that the cells are fully embedded in hard ceramic material and the webs accordingly consist entirely of hard ceramic material, which ensures high stability. At the same time it is ensured that the Stability of the hard ceramic coating is not affected by the engraving.
  • the hard ceramic coating can consist of chromium oxide. This is a very wear-resistant material that can also be engraved comparatively easily using a laser beam.
  • the hydrophobic coating applied after the engraving can consist of copper. This material repels water and at the same time has a high affinity for color, so that there is advantageously an excellent color transfer.
  • 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 plates, has the same diameter as the plate cylinder and an anilox roller 3 which cooperates with the applicator roller 2 and has a smaller diameter.
  • the applicator roller 2 acts simultaneously with a dampening unit 4 together.
  • the circumference of the anilox roller 3 is provided with cups 5 indicated in an enlarged manner in FIG. 1 and the webs 6 delimiting them.
  • the cups 5 are filled with paint, the webs 6 are scraped off, so that there is an exact dosage of the paint corresponding to the capacity of the cups 5.
  • the ink supply to the anilox roller 3 and the doctoring take place by means of a chamber doctor blade arrangement designated as a whole in FIG. This consists of two doctor blades lying against the anilox roller 3 with a negative angle of attack, which delimit a chamber acted upon by ink between them.
  • the anilox roller 3 consists, as can best be seen from FIG. 2, of a steel core 8, which can have the side bearing stubs, and a coating 9 made of hard ceramic material on the circumference of the steel core 8, into which the cups 5 are embedded. Chromium oxide or aluminum oxide can be used to form the hard ceramic coating. Materials of this type can easily be applied to the steel core 8 by spraying.
  • the thickness of the coating 9 is approximately 150 ⁇ .
  • the depth of the well 5 is in the order of 20 ⁇ to 50 ⁇ . The thickness of the coating 9 is therefore at least about three times the depth of the cells.
  • the coating 9 which consists of hard ceramic material, such as chromium oxide or aluminum oxide or the like
  • the webs 6 accordingly consist of a high-strength material, so that a high wear resistance is achieved.
  • the wells 5 are provided with a lining 10, as can further be seen in FIG. which consists of water-repellent and color-accepting material, for example vapor-deposited copper, which is also color and detergent-resistant.
  • the hard ceramic coating 9 can be applied to the steel core 8 by spraying. Such a coating results in a blank of the type on which FIG. 3 is based. If necessary, this blank can be ground to achieve an exact concentricity and an exact diameter.
  • the cups 5 are then engraved into the coating 9, so that the state underlying FIG. 4 is obtained.
  • the hard ceramic coating 9 is to be engraved with the aid of a laser beam. This enables a high level of engraving accuracy to be achieved.
  • the cups 5 are engraved into the hard ceramic coating 9, as already stated above, they result was believed, the webs made of hard ceramic material 6 automatically. Following the engraving, the blank processed so far is ground and polished or lapped to deburr the webs 6 and smooth the surface. This processing stage is based on FIG. 4 /.
  • the blank on which FIG. 4 is based is coated on the circumference with a fine layer of hydrophobic material.
  • film-like copper plating should be provided for this.
  • the layer thickness of this coating is small compared to the layer thickness of the hard ceramic coating 9 and is approximately 4 ⁇ m to 5 ⁇ m.
  • Such a coating can be vapor-deposited or applied galvanically or the like.
  • nickel or silicone or asphalt or a suitable plastic in the form of Teflon or Rilsan could also be used. Silicon or asphalt can be applied by brushing or spraying.
  • This coating initially also covers the circumferential top surface of the webs 6. In this area, however, abrasion takes place within a very short time during operation, so that grinding off after the coating has taken place can be dispensed with. However, it would also be readily conceivable to grind the webs 6 on the head side after the coating process until hard ceramic material emerges, so that constant conditions would be expected from the start during operation.
  • the hydrophobic coating is retained on the surface of the cups 5 that is recessed relative to the peripheral surface and forms the hydrophobic lining 10.
  • This lining 10 reduces the capacity of the wells 5 which are initially engraved into the hard ceramic coating 9 by laser beam.
  • the actual engraving depth T indicated in FIG. 4 must accordingly be deeper than the engraving of a conventional anilox roller by the thickness of the lining 10.
  • the hard ceramic coating 9 and the coating that results in the lining 10 each consist of a layer of the same material.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printing Plates And Materials Therefor (AREA)
EP88105687A 1987-04-16 1988-04-09 Rouleau tramé dans un dispositif d'encrage offset et procédé de fabrication d'un tel rouleau tramé Revoked EP0287002B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873713027 DE3713027A1 (de) 1987-04-16 1987-04-16 Rasterwalze fuer ein offsetfarbwerk, sowie verfahren zur herstellung einer derartigen rasterwalze
DE3713027 1987-04-16

Publications (3)

Publication Number Publication Date
EP0287002A2 true EP0287002A2 (fr) 1988-10-19
EP0287002A3 EP0287002A3 (en) 1989-06-28
EP0287002B1 EP0287002B1 (fr) 1994-11-02

Family

ID=6325830

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88105687A Revoked EP0287002B1 (fr) 1987-04-16 1988-04-09 Rouleau tramé dans un dispositif d'encrage offset et procédé de fabrication d'un tel rouleau tramé

Country Status (2)

Country Link
EP (1) EP0287002B1 (fr)
DE (2) DE3713027A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2695067A1 (fr) * 1992-08-28 1994-03-04 Koenig & Bauer Ag Guidage de papier dans des machines à imprimer rotatives.
EP0695637A3 (fr) * 1994-07-14 1997-09-24 Koenig & Bauer Albert Ag Rouleau de transfert d'encre d'un dispositif d'encrage court pour l'encrage d'une plaque lithographique "non-aqueuse"
DE19957453C1 (de) * 1999-09-03 2001-02-01 Ruediger Woerz Verfahren zum Auftragen von hochviskoser Farbe bei einer Offset-Druckmaschine
US6982116B1 (en) 2000-02-18 2006-01-03 Praxair S.T. Technology, Inc. Coatings on fiber reinforced composites
US7419704B2 (en) 2005-08-18 2008-09-02 Praxair S. T. Technology, Inc. Coatings on fiber reinforced composites
WO2009098102A1 (fr) * 2008-02-07 2009-08-13 Manroland Ag Groupe d'impression pour une machine de traitement

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8729615D0 (en) * 1987-12-18 1988-02-03 Fellows S Improved rollers
DE3822692C2 (de) * 1988-07-05 1996-02-15 Kochsmeier Hans Hermann Rasterwalze in einem Auftragswerk einer Druckmaschine
US4960050A (en) * 1989-07-07 1990-10-02 Union Carbide Coatings Service Technology Corp. Liquid transfer article having a vapor deposited protective parylene film
DE4036661C1 (fr) * 1990-11-17 1992-06-17 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4113903A1 (de) * 1991-04-27 1992-10-29 Frankenthal Ag Albert Walze fuer eine druckmaschine
DE4408615C2 (de) * 1994-03-15 1996-01-11 Roland Man Druckmasch Näpfchenwalze innerhalb eines Auftragswerks einer Rotationsdruckmaschine
DE4413236A1 (de) * 1994-04-15 1995-10-19 Heidelberger Druckmasch Ag Schichtförmiger Druckzylinder
US5832835A (en) * 1996-07-12 1998-11-10 Markem Corporation Soft doctoring cup
DE29903308U1 (de) 1999-02-24 1999-09-30 Nordson Corp., Westlake, Ohio Rad-Auftragsvorrichtung
DE10028478A1 (de) * 2000-06-08 2001-12-13 Roland Man Druckmasch Verfahren zur Herstellung einer Rasterwalze
CN102085743B (zh) 2009-12-04 2014-04-09 海德堡印刷机械股份公司 印刷装置
US9522524B2 (en) * 2015-02-02 2016-12-20 Eastman Kodak Company Method of multi-station flexographic printing including anilox roll with low surface energy zone

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2049102A (en) * 1979-05-03 1980-12-17 Csi Corp Transfer roll
DE3117341C2 (de) * 1981-05-02 1988-07-07 Albert-Frankenthal Ag, 6710 Frankenthal Farbwerk
JPS59204558A (ja) * 1983-05-09 1984-11-19 Tokyo Kikai Seisakusho:Kk 平版印刷用メツシユロ−ル
US4537127A (en) * 1984-09-12 1985-08-27 Rockwell International Corporation Black oxide lithographic ink metering roller
US4603634A (en) * 1985-02-04 1986-08-05 Rockwell International Corporation Copper and nickel layered ink metering roller
US4601242A (en) * 1985-02-04 1986-07-22 Rockwell International Corporation Copper and ceramic composite ink metering roller
DE3608286A1 (de) * 1985-04-03 1986-10-09 Winfried 7758 Meersburg Heinzel Verfahren zur oberflaechenbehandlung eines druckmaschinenzylinders, druckmaschinenzylinder sowie verwendung derselben
DE3525045A1 (de) * 1985-07-13 1987-01-22 Paul Sauer Druckwalzenfabriken Druckwalze

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2695067A1 (fr) * 1992-08-28 1994-03-04 Koenig & Bauer Ag Guidage de papier dans des machines à imprimer rotatives.
EP0695637A3 (fr) * 1994-07-14 1997-09-24 Koenig & Bauer Albert Ag Rouleau de transfert d'encre d'un dispositif d'encrage court pour l'encrage d'une plaque lithographique "non-aqueuse"
DE19957453C1 (de) * 1999-09-03 2001-02-01 Ruediger Woerz Verfahren zum Auftragen von hochviskoser Farbe bei einer Offset-Druckmaschine
US6982116B1 (en) 2000-02-18 2006-01-03 Praxair S.T. Technology, Inc. Coatings on fiber reinforced composites
US7419704B2 (en) 2005-08-18 2008-09-02 Praxair S. T. Technology, Inc. Coatings on fiber reinforced composites
WO2009098102A1 (fr) * 2008-02-07 2009-08-13 Manroland Ag Groupe d'impression pour une machine de traitement

Also Published As

Publication number Publication date
DE3851972D1 (de) 1994-12-08
DE3713027C2 (fr) 1990-08-30
DE3713027A1 (de) 1988-11-17
EP0287002A3 (en) 1989-06-28
EP0287002B1 (fr) 1994-11-02

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