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EP1466729B1 - Cylindre pour une machine à imprimer et procédé pour la production d'un cylindre - Google Patents

Cylindre pour une machine à imprimer et procédé pour la production d'un cylindre Download PDF

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Publication number
EP1466729B1
EP1466729B1 EP04405171A EP04405171A EP1466729B1 EP 1466729 B1 EP1466729 B1 EP 1466729B1 EP 04405171 A EP04405171 A EP 04405171A EP 04405171 A EP04405171 A EP 04405171A EP 1466729 B1 EP1466729 B1 EP 1466729B1
Authority
EP
European Patent Office
Prior art keywords
ink
roller
color
repellent
friendly
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
EP04405171A
Other languages
German (de)
English (en)
Other versions
EP1466729A3 (fr
EP1466729A2 (fr
Inventor
Robert Langsch
Carlo Manta
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.)
Wifag Maschinenfabrik AG
Original Assignee
Wifag Maschinenfabrik 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 Wifag Maschinenfabrik AG filed Critical Wifag Maschinenfabrik AG
Publication of EP1466729A2 publication Critical patent/EP1466729A2/fr
Publication of EP1466729A3 publication Critical patent/EP1466729A3/fr
Application granted granted Critical
Publication of EP1466729B1 publication Critical patent/EP1466729B1/fr
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
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/36—Inking-rollers serving also to apply ink repellants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/26—Construction of inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/26—Damping devices using transfer 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
    • 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
    • B41N2207/04—Intermediate 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
    • 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 present invention relates to a roller, in particular a roller, which can be used in a printing machine, for example in the inking or dampening unit, and to a method for producing such a roller.
  • FIG. 4 shows a roller pattern of a printing unit, through which a web B to be printed runs.
  • the railway B will be in the in FIG. 4 initially shown on a counter-pressure cylinder 1 ', at which a first blanket cylinder 2' and a second blanket cylinder 2 "rest and is further led to re-moistening via another impression cylinder 1, on which also a first blanket cylinder 2 and a second blanket cylinder 2" rest ,
  • the roller scheme will be described with reference to the structure of the printing unit used for re-wetting.
  • the dampening roller 11 is in contact with a rubbing roller 12, the so-called dampening driver.
  • this rubbing roller 12 is the wet transfer roller 13 and receives sprayed over a contactless dampening dampening solution.
  • the wet transfer roller 13, the rubbing roller 12 and the wet application roller 11 transfer the dampening solution to the plate cylinder 3, whereby you get the desired pre- or Nachfeuchtung.
  • the voltage applied to the plate cylinder 3 color applicator rollers 4 transfer color from the voltage applied to these first rubbing roller 5a, the first so-called ink driver.
  • the rubber roller 6a abuts on the ink driver 5a, which further bears against a second ink driver 5b, against which two further rubber rollers 6b and 6c abut.
  • the rubber roller 6c is applied to the ink film roller 7, at which in a known manner the ink duct 8 and the scoop roller 10 abut.
  • the ink fountain 5a is about the rubber rollers 6a, 6c, the other ink driver 5b, on the ink fountain roller 7, on the ink fountain roller 8, on which the color color meter, arranged in the ink knife bar 9, is metered and the scoop roller 10, which in the color immersed in the ink tray, dyed in a known manner.
  • An exemplary inking and dampening unit is in the DE 40 12 283 A1 shown by the applicant.
  • the reciprocating dampening driver 12 mixes the different colors used in two side-by-side webs, resulting in unsatisfactory printing results.
  • the EP 0 511 543 A1 discloses a method for producing a partially hydrophilic and partially oleophilic surface of an inking roller in which a hydrophilic material is introduced into recesses in an oleophilic metal layer of copper. The oleophilic surface portions are removed until the desired distance of oleophilic to hydrophilic surface is reached.
  • the US 4,860,652 discloses a roller having a surface of lipophilic material in which are provided cellular depressions coated, for example, with ceramic or tungsten carbide.
  • the roll according to the invention is used in the rewetting, in which there is a risk that color runs back into the dampening unit.
  • the roller according to the invention has at least two partial areas or surfaces which preferably extend around the center axis of the roller and which consist of a color-friendly material, wherein between the two circumferential partial areas or areas from color-friendly material at least one circumferential portion or a circumferential surface is arranged, which consists of an ink-repellent or ink-repellent material.
  • a color-friendly material wherein between the two circumferential partial areas or areas from color-friendly material at least one circumferential portion or a circumferential surface is arranged, which consists of an ink-repellent or ink-repellent material.
  • a circumferential surface may, for example, be annular or have one or more partial ring pieces, wherein the surface is advantageously designed according to the roll surface and is preferably arranged around the central axis of the roll and particularly advantageously has approximately the same curvature as the curvature of the adjacent roll surface.
  • a "color-friendly" in the context of the invention should have such physical and / or chemical properties that a roller coated with such a material can fulfill the function of a paint roller, so can absorb color.
  • a color-friendly material has a hydrophobic property.
  • an "ink-repellent" or “ink-repellent” material in the context of the invention should be a material which has such physical and / or chemical properties that the roller can perform a function as a dampening roller in a region coated with an ink-repellent material, ie absorb water can.
  • the ink-repellent material should have hydrophilic properties or be water-friendly.
  • a ceramic, copper, polyamide or Rilsan (R) is used as the color-friendly or hydrophobic material.
  • Chromium is advantageously used as an ink-repellent or water-friendly or hydrophilic material.
  • a plurality of regions or circumferential surfaces of color-friendly material are arranged on a roller according to the invention in the axial direction one behind the other, between each of which at least one region or a circumferential surface is arranged from a color-repellent or water-friendly material.
  • four color-friendly partial regions may be provided successively in the axial direction, which are separated from one another by three subregions of water-friendly or ink-repellent material.
  • the thickness of the color-friendly material is preferably in the range of 0.1 mm to 0.5 mm, and more preferably 0.3 mm.
  • the thickness of the ink repellent or water-friendly material is in the range of 0.01 mm to 0.10 mm, more preferably in the range of 0.02 mm to 0.05 mm and is advantageously 0.035 mm.
  • the width of a circumferential surface or a portion of color-friendly material is preferably about the width of a type area and is advantageously in the range of 25 to 35 cm.
  • the width of the portion of water-friendly material is slightly larger than the stroke of a distributor roller and is advantageously in the range of 18 to 26 mm and is advantageously 22 mm.
  • the invention relates to a color and / or dampening unit preferably for offset printing machines with at least one roller as described above.
  • the invention relates to a method for producing a roller as described above, wherein at least two approximately annular or partially annular structures of a color-friendly material and intervening at least one annular structure of a Farbabsto ⁇ enden material in the surface region or directly to a WalzenrohSystem formed the surface of the roller, so for example exposed, attached or coated thereon.
  • the roll according to the invention is produced by pre-processing a roll blank or pipe by turning to obtain a surface having a desired texture.
  • one or more subsections of color-friendly and ink-repellent or ink-repellent material can already be provided in the roll raw body. It is also possible that a color-friendly or ink-repellent material is applied to the WalzenrohMech at the desired locations.
  • the application of a color-friendly or ink-repellent material can be carried out, for example, by chromium plating, welding or by a coating method such as, for example, a plasma coating.
  • an area at the transition between color-friendly and ink-repellent or repellent materials or a marginal area can be sealed in order to prevent, for example, moisture from entering the roller.
  • FIG. 1 shows a sectional view of a portion of a roller according to the invention, wherein the structure of the roller is shown from the central axis to the surface.
  • the roller shown by way of example is subdivided into four sections of width Y, assigned to zones A to D, which each have approximately the same width and correspond approximately to a type area mirror.
  • a color-friendly or hydrophobic material 25, 33 such as ceramic, copper, polyamide or Rilsan (R) with a layer thickness of about 0.3 mm is attached to the surface.
  • the surface of the roller according to the invention is designed such that a color-friendly material which is assigned to the type area and a water-friendly material which lies between two adjacent color-friendly materials is arranged alternately over the surface corresponding more to a paper width B for the printing.
  • a dampening drive roller provided with such a surface, which is moved back and forth in the axial direction in the printing insert with a stroke of, for example, 20 mm, ensures that the color-friendly material assigned to the type area mirror the transfer of a color is possible and on the other hand prevented by lying between the areas of color-friendly material ink-repellent or water-friendly material that colors that run in adjacent zones next to each other, can mix.
  • the surface area of water-friendly material ensures a sufficient supply and discharge of water during operation and can thus carry away beyond the edge of a zone or a sentence mirror outgoing color and thus can prevent this color runs in an adjacent zone or an adjacent type area ,
  • FIG. 2 shows a first embodiment of a method according to the invention for producing a roll according to the invention.
  • the initial state designated 1 there is a roll raw body or tube 20, which is pre-machined by turning so that four circumferential recesses 21 are produced. Between each two recesses 21 is in each case a circumferential projection 22nd
  • each circumferential projection 22 is chrome plated and so a layer of chromium 23 applied.
  • a weld 24 is applied to produce a watertight seal at the edge of the chrome layer 23.
  • the weld 24 can be roughened to ensure better adhesion of the applied in step 4 color-friendly or hydrophobic coating 25.
  • a polyamide can be applied as a color-friendly layer 25. It is possible to perform a plasma coating to produce the color-friendly layer 25. Likewise, a hard chrome plating can be performed. Rilsan is advantageously applied as a color-friendly material 25 on the roller 20.
  • the color-friendly layer can be applied to the roller 20 either as a single layer or in multiple layers-in the exemplary embodiment, three layers.
  • step 5 the roller 20 produced by the processing steps 1 to 4 can be ground or turned to obtain a substantially planar surface with circumferential color-friendly portions 25 which are interrupted by circumferential ink-repellent or water-friendly portions 23 be separated.
  • FIG. 3 shows process steps for carrying out a second process according to the invention for producing the roll according to the invention.
  • step 1 a roll raw body 30 is processed by over-turning in the area indicated by the arrow to make the surface of the Walzenroh stressess 30 planar for the subsequent manufacturing process.
  • step 2 a recess 31 running around the central axis of the rolling raw body 30 is produced by piercing or another material-removing method.
  • step 3 a material 32 is applied to the recess 31 formed in step 2 by stainless welding.
  • step 4 the surface of the raw cylindrical body 30 pre-machined by steps 1 to 3 is made into a desired shape by pre-turning, the outer surface of the material 32 applied in step 3 being made planar and the width of this material 32 being planarized desired width is reduced.
  • a color-friendly material 33 such as Rilsan (R) is applied to the surface regions of the WalzenrohMechs 30, which adjoin the projecting portion of the material 32.
  • Rilsan R
  • one or more layers of the color-friendly material 33 may be applied.
  • the outermost surface of the material 32 embedded between the color-friendly material 33 is hard-chrome plated in step 6 to apply a chromium color-repellent layer 34, and subsequently the green-body 30 processed by steps 1-6 is ground in step 7 to obtain a substantially planar outer surface ,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Claims (10)

  1. Cylindre pour une machine à imprimer comportant au moins deux zones partielles (25, 33) en rotation autour de l'axe central du cylindre et constituées d'un matériau absorbant l'encre, et au moins une zone partielle rotative (23, 34) constituée d'un matériau repoussant l'encre, ladite au moins une zone partielle étant agencée entre les au moins deux zones partielles rotatives (25, 33) constituées d'un matériau absorbant l'encre, dans lequel les zones partielles (25, 33) tournant autour de l'axe central du cylindre et constituées d'un matériau absorbant l'encre et la au moins une zone partielle annulaire (23, 34) constituée d'un matériau repoussant l'encre présentent le même diamètre.
  2. Cylindre selon la revendication 1, dans lequel les au moins deux zones partielles (25, 33) absorbant l'encre sont fabriquées en céramique, en cuivre, en polyamide ou en Rilsan.
  3. Cylindre selon l'une quelconque des revendications précédentes, dans lequel la au moins une zone partielle (23, 34) rotative repoussant l'encre est constituée de chrome.
  4. Cylindre selon l'une quelconque des revendications précédentes comportant une pluralité de zones partielles rotatives constituées d'un matériau absorbant l'encre, et une pluralité de zones partielles rotatives constituées d'un matériau repoussant l'encre et situées entre les zones partielles constituées d'un matériau absorbant l'encre.
  5. Cylindre selon l'une quelconque des revendications précédentes, dans lequel une zone partielle rotative constituée d'un matériau absorbant l'encre a de 0,1 à 0,5 mm d'épaisseur et/ou de 25 à 35 cm de largeur.
  6. Cylindre selon l'une quelconque des revendications précédentes, dans lequel une zone partielle rotative constituée d'un matériau repoussant l'encre a de 0,01 à 0,10 mm d'épaisseur et de 18 à 26 mm de largeur.
  7. Dispositif de mouillage comportant au moins un cylindre selon l'une quelconque des revendications précédentes.
  8. Procédé pour fabriquer un cylindre selon l'une quelconque des revendications 1 à 6, comportant les étapes consistant à former sur un corps brut de cylindre (20, 30) au moins deux structures annulaires (25, 33) constituées d'un matériau absorbant l'encre et au moins une structure annulaire (23, 34) constituée d'un matériau repoussant l'encre et située entre ces structures annulaires (25, 33), et meuler ensuite ou faire tourner la totalité du corps brut de cylindre (20, 30).
  9. Procédé selon la revendication précédente, dans lequel les structures annulaires (23, 25, 33, 34) sont appliquées par soudage, chromage ou dépôt de plasma.
  10. Procédé selon l'une quelconque des deux revendications précédentes, dans lequel au moins une zone de bord d'une structure annulaire (23, 25, 33,34) est soudée pour réaliser l'étanchéité.
EP04405171A 2003-04-09 2004-03-22 Cylindre pour une machine à imprimer et procédé pour la production d'un cylindre Expired - Lifetime EP1466729B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10316240 2003-04-09
DE10316240A DE10316240A1 (de) 2003-04-09 2003-04-09 Walze für eine Druckmaschine und Verfahren zur Herstellung einer Walze

Publications (3)

Publication Number Publication Date
EP1466729A2 EP1466729A2 (fr) 2004-10-13
EP1466729A3 EP1466729A3 (fr) 2008-12-10
EP1466729B1 true EP1466729B1 (fr) 2010-08-04

Family

ID=32864400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04405171A Expired - Lifetime EP1466729B1 (fr) 2003-04-09 2004-03-22 Cylindre pour une machine à imprimer et procédé pour la production d'un cylindre

Country Status (4)

Country Link
US (1) US7127990B2 (fr)
EP (1) EP1466729B1 (fr)
AT (1) ATE476295T1 (fr)
DE (2) DE10316240A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7207268B2 (en) * 2004-07-30 2007-04-24 Nu Tech Coatings Llc Apparatus and method of enhancing printing press cylinders
DE102006015490B4 (de) * 2006-04-03 2009-11-12 Koenig & Bauer Aktiengesellschaft Rollendruckmaschine mit einem Filmfarbwerk
US20080134916A1 (en) * 2006-12-07 2008-06-12 Heidelberger Druckmaschinen Ag Printing Press with a Washing Device for an Inking Unit and Method of Removing Ink from an Inking Unit
DE102008007679B4 (de) * 2008-02-07 2016-05-25 manroland sheetfed GmbH Druckwerk für eine Verarbeitungsmaschine
US8192005B2 (en) * 2009-07-29 2012-06-05 Xerox Corporation Rollers for phase-change ink printing
DE102015015377A1 (de) * 2015-11-27 2017-06-01 Giesecke & Devrient Gmbh Rasterwalze für eine Flexodruckmaschine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4287827A (en) * 1979-05-17 1981-09-08 Warner Gordon R Combined inking and moistening roller
DE3326698A1 (de) * 1983-07-23 1985-02-07 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Vorrichtung zur zonenweisen messtechnischen kontrolle der feuchtmittelfuehrung im druckwerk einer offsetdruckmaschine
DE3519134C1 (de) 1985-05-29 1988-10-20 Roland Man Druckmasch Walze,insbesondere Farb- oder Verreiberwalze,fuer Druckmaschinen sowie deren Verwendung
US4860652A (en) 1986-05-24 1989-08-29 Kabushikigaisha Tokyo Kikai Seisakusho Mesh roller for planography
US5107762A (en) * 1988-06-16 1992-04-28 Rockwell International Corporation Inked dampener for lithographic printing
DE4012283A1 (de) 1990-04-17 1991-10-24 Wifag Maschf Farb- und feuchtwerk fuer ein umsteuerbares druckwerk einer rotations-offsetdruckmaschine
DE4113903A1 (de) * 1991-04-27 1992-10-29 Frankenthal Ag Albert Walze fuer eine druckmaschine
US6435086B1 (en) * 1995-05-04 2002-08-20 Howard W. DeMoore Retractable inking/coating apparatus having ferris movement between printing units
DE19653911C2 (de) 1996-12-21 2003-03-27 Roland Man Druckmasch Druckmaschinenwalze mit einer farbfreundlichen Beschichtung der Ballenfläche des Walzenkerns, insbesondere Farbwalze
DE19926833A1 (de) * 1999-06-12 2000-12-14 Koenig & Bauer Ag Brückenwalze
EP1147889A3 (fr) * 2000-04-14 2006-01-18 Komori Corporation Structure de rouleau dans une machine à imprimer.
FI116389B (fi) * 2002-07-16 2005-11-15 Millidyne Oy Menetelmä pinnan ominaisuuksien säätämiseksi

Also Published As

Publication number Publication date
ATE476295T1 (de) 2010-08-15
DE502004011465D1 (de) 2010-09-16
US7127990B2 (en) 2006-10-31
EP1466729A3 (fr) 2008-12-10
DE10316240A1 (de) 2004-11-04
US20040226461A1 (en) 2004-11-18
EP1466729A2 (fr) 2004-10-13

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