EP0350434B1 - Farbauftragswalze und Verfahren zu deren Herstellung - Google Patents

Farbauftragswalze und Verfahren zu deren Herstellung Download PDF

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Publication number
EP0350434B1
EP0350434B1 EP89730149A EP89730149A EP0350434B1 EP 0350434 B1 EP0350434 B1 EP 0350434B1 EP 89730149 A EP89730149 A EP 89730149A EP 89730149 A EP89730149 A EP 89730149A EP 0350434 B1 EP0350434 B1 EP 0350434B1
Authority
EP
European Patent Office
Prior art keywords
layer
recesses
gravure
webs
roller
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
EP89730149A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0350434A2 (de
EP0350434A3 (en
Inventor
Hans H. Kochsmeier
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.)
Morgan Crucible Co PLC
Original Assignee
Haldenwanger W KG
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 Haldenwanger W KG filed Critical Haldenwanger W KG
Priority to AT89730149T priority Critical patent/ATE81616T1/de
Publication of EP0350434A2 publication Critical patent/EP0350434A2/de
Publication of EP0350434A3 publication Critical patent/EP0350434A3/de
Application granted granted Critical
Publication of EP0350434B1 publication Critical patent/EP0350434B1/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

Definitions

  • the invention relates to an inking roller in the form of an anilox roller for an offset inking unit or the like printing device according to the preamble of claim 1 and to an apparatus for performing the method.
  • Inking units of the type of interest here can only meet the high demands on the reproducibility of the printing form and the image accuracy on the printing medium with consistent and tonal quality if, with sufficient long-term use, the same thick ink layers for the roller that transfers the ink, i.e. the anilox roller, are ensured at all times .
  • Print application rollers working with a doctor blade usually do not meet all requirements at the same time.
  • Inking units that work with highly viscous printing inks, as is the case with offset printing presses for example, are known to use an immersion roller immersed in an ink fountain, one that is mounted on a cylinder Printing form inking application roller and a transfer roller transferring the ink from the dipping roller to the application roller, the transfer roller being acted upon by the ink receiving recesses and the webs arranged therebetween in a raster arrangement.
  • ink supply or conditioning rollers are assigned to the roller.
  • Anilox rollers are also known for an offset inking unit with cups delimited by bars that can be scraped off, which are made of ceramic material and in which the cups have a hydrophobic lining (DE-OS 37 13 027).
  • This anilox roller which in the known arrangement is designed as a steel roller, interacts with an application roller, to which a fountain solution is supplied in addition to the ink. Since there is also a risk here that the dampening solution required for wetting the printing plate reaches the anilox roller via the applicator roller and adversely affects the adhesion of the ink in the wells and thus the filling of the wells with ink and thus fluctuations in ink quantity and ink density can occur. pays special attention to the hydrophobic lining directed.
  • the optimal material for each individual layer care is taken to choose the optimal material for each individual layer, with aluminum oxide or chromium oxide being found as the hard ceramic coating for particularly advantageous wear-resistant material which is engraved by means of a laser beam.
  • the hydrophobic material layer is applied in the form of a uniformly thin copper layer of 20 ⁇ to 50 ⁇ thickness, so that on the one hand high wear resistance is ensured by the bars made of hard ceramic material and the high affinity of this ceramic material for water in the area of the water, which has a negative effect on the pressure Cups can be avoided through the thin vapor-deposited copper layer.
  • An initially very thinly evaporated copper film with a thickness of 4 to 5 ⁇ can subsequently be galvanically brought to the aforementioned thickness, the copper film then covering the entire grid surface of the inking roller and optionally being sanded down again in the area of the hard ceramic webs on the surface thereof before the roller is used can.
  • the present invention is based on the above-described prior art, the object of which is to design the abrasion-resistant metal and / or ceramic layer applied to the bale surface of the roller cylinder optimally for squeegee operation in a multi-layer roller of the generic type and independently of this, to design the grid of the wells to be measured for the ink application liquid and thus in turn optimally for the requirements of the printing substrate.
  • the device for carrying out this method is characterized by the features of claim 5. Its particular configuration and further development is set out in detail in subclaims 6 to 14.
  • the applicator roller produced by the present method is particularly suitable for applying offset inks in a particularly advantageous manner, but also for other print application media.
  • a combination of a laser-engraved ceramic layer and an etched metal layer can not only be used to find a very economical solution but also to provide a paint application roller that meets the highest quality requirements with an extremely long runtime.
  • the wear-resistant layer can be preselected in accordance with a predefined number of raster with an optimized coordination between the number of ridges and the ridge area or ridge width and doctor blade, regardless of the rasterization of the ink cups, their shape and arrangement, which is optimized for the ink application.
  • hydrophobic metal layer it may also be advantageous not to produce the upper hydrophobic metal layer by chemical etching but mechanically by so-called metting or engraving, but also physically by laser and electron beam engraving. Only the complete filling of the depressions in the ceramic layer With hydrophobic lining material, advantageously up to the height of the ceramic webs, the independence of a second engraving for the production of the color receptacles is possible. Copper is a well-known but also particularly advantageous material for the latter. It can be applied similarly to that of the ceramic layer, for example by means of a plasma torch or also by spraying.
  • the inking roller shown in Figure 1 via a in side view and via b in longitudinal view has the layer arrangement shown in Figure 2 as a section and in cross section. Accordingly, a hard ceramic layer S 1 is applied to the ball surface 2 on the steel core K of the roller cylinder in the exemplary embodiment by means of a plasma torch, dome-shaped depressions N 1 were formed in the outer circumferential surface thereof by means of laser engraving. The depressions N 1 can be seen between them first webs St 1, which define the grid-shaped surface pattern of the ceramic layer S 1. The webs S 1 also specify the wiping surface for the squeegee when the inking roller is loaded with ink.
  • the anilox roller shown can be used advantageously, for example, for direct or indirect inking of a plate cylinder.
  • the "anilox" process for example, is again mentioned in this connection, for which anilox rollers with surfaces are used, but which oil colors have a particular affinity for, on the other hand, are hydrophobic.
  • doctor blades In the known "anilox" offset printing process mentioned, on the other hand, doctor blades must be used, which lead to signs of wear and thus frequent downtime in the production operation.
  • Known materials with wear-resistant but hydrophilic properties show the known irregularities in the ink application, so that the disadvantages mentioned at the outset with an anilox roller are only wear-resistant Ceramic layer and laser engraving cannot be fixed. This advantageously allows only an optimization of the grid pattern and the stripping surface along the ceramic webs for the doctor blade to be specified, but not corresponding conditions for the cavities transmitting the ink application liquid.
  • the engraved layer S 1 is covered with a lining S 2, the thickness of which preferably protrudes beyond the height of the ceramic webs St 1 and the choice of material is made such that it has the desired oil-friendly but water-hostile properties.
  • the layer S2 consists of copper in the exemplary embodiment. After the copper has been introduced by means of methods known per se onto the ceramic layer and thus into the depressions N 1 and has been sufficiently anchored here, the second layer S 2, ie the lining material, is removed until the webs St 1 are exposed. So that a smooth cylindrical surface is given, consisting of the grid-shaped copper fillings within the recesses N1 and the ceramic rows St1 interrupting them approximately in rows or lines.
  • a second engraving which is independent of the first engraving is now introduced into this surface, namely in the form of a multiplicity of cups N 2.
  • the grid number of the grid defined by the cup N2 larger and an integer multiple compared to the grid of the engraving within the wear-resistant layer S1.
  • the rasterization of the first layer S1 with its webs St1 defines only the contact surface with the doctor blade, while the rasterization of the cups N2 and thus the second engraving is used exclusively for measuring the color or metering it.
  • the two engravings on the anilox roller 1 can be produced completely independently of one another, both the rasterization of the first webs St 1 and that of the second webs St 2 can represent an integer multiple or a fractional multiple of one another and vice versa, and can also be repeated periodically with one another or can be aperiodic to one another.
  • the webs can be partially interrupted by the second engraving, which is ultimately insignificant for the wear resistance of the surface of the anilox roller 1 which engages with the doctor blade, since the load-bearing portion of the webs St 1 is thereby only insignificantly reduced.
  • the load-bearing component is generally understood to mean the ratio of the web area to the bale surface.
  • the amount of bearing can be set within wide limits by the type of engraving. A typical range of values is between 25% and less than 2%.
  • Both the wells N1 and the well N2 can in cross section can be chosen arbitrarily what applies to the design of their active surface.
  • the resulting webs St2 between the lining material or the second layer S2, which separate the wells N2 from each other, are advantageously at the same height, that is to say in alignment with the webs St1 of the wear-resistant layer S1, but they can also be set back radially inward relative to this be so that an engagement of the squeegee with the webs St2 is just excluded.
  • the layer S2 is a color-friendly and water-repellent layer, while the layer S1 is a wear-resistant, due to its material, however, water-friendly material layer.
  • the grid numbers for the engravings placed in the individual layers can have a fixed relationship to one another.
  • the engraving angle should be selected in relation to the direction of web travel so that no moiré can occur on the substrate.
  • FIG 3 a detail of an engraving pattern is shown, the recesses N1 being honeycomb-shaped in plan view, while the wells N2 show a circular cross section.
  • the number of grids for the well N2 is greater than the number of grids for the wells N1 in this embodiment.
  • Figure 4 shows a further exemplary embodiment for the predefinition of wells, one of which is shown in cross section here.
  • the wear-resistant layer S 1 is first engraved according to a desired and predeterminable number of rasters Z 1.
  • the engraved layer is then filled with the second layer S2, for example with copper, which is then removed to the extent that the webs St1 are exposed.
  • the copper is worked out of the wells by a subsequent etching engraving to such an extent that the exposed volume of the well corresponds exactly to the target value for the metering of the colored liquid.
  • the thickness of the wear-resistant layer S1 which is indicated in Figure 4 with the reference symbol H3, is greater in this embodiment than the depth of the well to be introduced later into the surface of the anilox roller.
  • the depth of the well shown is indicated by H1, where H1 can be, for example, 50 ⁇ , while H2 can be 25 ⁇ deep.
  • the layer S2 is engraved with etching liquid, which dissolves this layer, but does not attack the layer S1. The etching process is continued until the layer S 2 in the area of the well has dissolved so far that the desired well volume has the predetermined actual value.
  • the depth region of the well has a metallic surface, which has the oil-friendly and water-repellent property that the wall of the well requires is owned. Nevertheless, the wear-resistant webs for the squeegee are retained in full in the desired grid, so that a further advantage is added to the above-described advantages of the embodiment according to Figures 1 to 3.
  • each well is created in that, due to laser engraving, the laser beam not only penetrates the wear-resistant hydrophilic material but also creates the metal base and the spherical shape shown, for example.
  • the lining material of the second layer to be introduced in this case the copper material, gives the metal base of the cup a particularly good adhesion and leads, so to speak, to an integral bond between the two metals.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
EP89730149A 1988-07-05 1989-06-22 Farbauftragswalze und Verfahren zu deren Herstellung Expired - Lifetime EP0350434B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89730149T ATE81616T1 (de) 1988-07-05 1989-06-22 Farbauftragswalze und verfahren zu deren herstellung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3822692A DE3822692C2 (de) 1988-07-05 1988-07-05 Rasterwalze in einem Auftragswerk einer Druckmaschine
DE3822692 1988-07-05
DE3903372A DE3903372C2 (de) 1988-07-05 1989-02-04 Verfahren zur Herstellung einer Farbauftragswalze
DE3903372 1989-02-04

Publications (3)

Publication Number Publication Date
EP0350434A2 EP0350434A2 (de) 1990-01-10
EP0350434A3 EP0350434A3 (en) 1990-03-21
EP0350434B1 true EP0350434B1 (de) 1992-10-21

Family

ID=25869760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89730149A Expired - Lifetime EP0350434B1 (de) 1988-07-05 1989-06-22 Farbauftragswalze und Verfahren zu deren Herstellung

Country Status (7)

Country Link
US (1) US4993320A (el)
EP (1) EP0350434B1 (el)
JP (1) JPH0286496A (el)
CA (1) CA1314172C (el)
DE (3) DE3822692C2 (el)
ES (1) ES2035634T3 (el)
GR (1) GR3006822T3 (el)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9004666U1 (de) * 1990-04-25 1990-07-26 W. Haldenwanger Technische Keramik GmbH & Co KG, 13597 Berlin Auftragswalze, nämlich Rasterwalze für ein Auftragswerk, mit Näpfchengravur
DE4036661C1 (el) * 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
DE4228611A1 (de) * 1992-08-28 1994-03-03 Koenig & Bauer Ag Papierführung bei Rollenrotationsdruckmaschinen
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
US5633061A (en) * 1994-08-08 1997-05-27 Light & Sound Design, Ltd. Medium for a color changer
US6696101B2 (en) * 1994-08-08 2004-02-24 Light And Sound Design Ltd. Medium for a color changer
DE19645934A1 (de) * 1996-11-07 1998-05-14 Roland Man Druckmasch Rasterwalze innerhalb eines Auftragswerkes einer Rotationsdruckmaschine
ATE404378T1 (de) * 2005-05-03 2008-08-15 Merck Patent Gmbh Verwendung von lasergravierten druckformen
TWI461306B (zh) * 2006-07-19 2014-11-21 Boettcher Gmbh & Co Felix 隨機雷射處理之薄膜滾子
US7925192B2 (en) * 2007-09-04 2011-04-12 Ricoh Company, Ltd. Developing roller, developing device, process cartridge, and image forming apparatus
DE102008000725A1 (de) * 2008-03-18 2009-09-24 Manroland Ag Farbwerk und Feuchtwerk
DE102008000726A1 (de) * 2008-03-18 2009-09-24 Manroland Ag Walze für ein Druckwerk
US20100282102A1 (en) * 2009-05-08 2010-11-11 Mehdizadeh Sharmin Label printing cylinder and process
GR1007354B (el) * 2009-12-15 2011-07-20 Icr Ιωαννου Αβεε, Κατασκευη κυλινδρου βαθυτυπιας με βαση απο αλουμινιο
US10500784B2 (en) 2016-01-20 2019-12-10 Palo Alto Research Center Incorporated Additive deposition system and method
JP6913280B2 (ja) * 2017-04-07 2021-08-04 住友ゴム工業株式会社 現像ローラおよびその製造方法
US10493483B2 (en) 2017-07-17 2019-12-03 Palo Alto Research Center Incorporated Central fed roller for filament extension atomizer
US10464094B2 (en) * 2017-07-31 2019-11-05 Palo Alto Research Center Incorporated Pressure induced surface wetting for enhanced spreading and controlled filament size

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH400194A (de) * 1962-06-16 1965-10-15 Maschf Augsburg Nuernberg Ag Farbwerk für Rotationsdruckmaschinen
US4009658A (en) * 1974-04-26 1977-03-01 Pamarco Incorporated Fluid metering roll and method of making the same
US4793041A (en) * 1979-05-03 1988-12-27 Jerome D. Jenkins Transfer roll with ceramic-fluorocarbon coating containing cylindrical ink holes with round, beveled entrances
US4537127A (en) * 1984-09-12 1985-08-27 Rockwell International Corporation Black oxide lithographic ink metering roller
DE3615141A1 (de) * 1986-05-03 1987-11-05 Zecher Gmbh Kurt Farbuebertragungswalze mit oxidschicht
DE3713027A1 (de) * 1987-04-16 1988-11-17 Frankenthal Ag Albert Rasterwalze fuer ein offsetfarbwerk, sowie verfahren zur herstellung einer derartigen rasterwalze

Also Published As

Publication number Publication date
EP0350434A2 (de) 1990-01-10
DE58902494D1 (de) 1992-11-26
CA1314172C (en) 1993-03-09
JPH0286496A (ja) 1990-03-27
EP0350434A3 (en) 1990-03-21
DE3822692A1 (de) 1990-01-11
DE3903372A1 (de) 1990-08-30
US4993320A (en) 1991-02-19
DE3903372C2 (de) 2001-07-12
DE3822692C2 (de) 1996-02-15
ES2035634T3 (es) 1993-04-16
GR3006822T3 (el) 1993-06-30

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