WO1997019816A1 - Procede de production d'une forme metallique pour impression en heliogravure - Google Patents

Procede de production d'une forme metallique pour impression en heliogravure Download PDF

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Publication number
WO1997019816A1
WO1997019816A1 PCT/EP1996/005310 EP9605310W WO9719816A1 WO 1997019816 A1 WO1997019816 A1 WO 1997019816A1 EP 9605310 W EP9605310 W EP 9605310W WO 9719816 A1 WO9719816 A1 WO 9719816A1
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WO
WIPO (PCT)
Prior art keywords
coating
printing
printing form
areas
removal
Prior art date
Application number
PCT/EP1996/005310
Other languages
German (de)
English (en)
Inventor
Hans-Georg Schepers
Karl-Wilhelm Saueressig
Original Assignee
Schepers Druckformtechnik Gmbh
Saueressig Gmbh + Co.
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
Priority claimed from DE1995144272 external-priority patent/DE19544272C2/de
Application filed by Schepers Druckformtechnik Gmbh, Saueressig Gmbh + Co. filed Critical Schepers Druckformtechnik Gmbh
Priority to AU10959/97A priority Critical patent/AU1095997A/en
Publication of WO1997019816A1 publication Critical patent/WO1997019816A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/02—Engraving; Heads therefor
    • B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
    • B41C1/05—Heat-generating engraving heads, e.g. laser beam, electron beam

Definitions

  • the present invention relates to a method for producing a metallic printing form for gravure printing.
  • the classic and still widely used method for producing a metallic printing form for rotogravure printing is to apply a light-sensitive photopolymer layer to the printing form surface, to apply a layer containing the image and / or text information for the desired print image, and in a contact copying process by means of high UV light output through the film to re-expose the image and / or text information to the photopolymeric layer.
  • a polymerization takes place in the exposed areas of the photopolymer layer, which makes the layer insoluble for a subsequent removal process in which the unexposed areas of the photopolymer layer are removed.
  • the surface of the metallic printing form is then engraved by etching or electrolysis, after which the remaining coating is also removed.
  • a print-ready printing form is available.
  • a disadvantage of this classic method is that it is very complex and complicated, in particular because the film material is difficult to handle and allows only limited accuracy when transferred to the printing form surface.
  • a serious, principle-related disadvantage is that a seamless or endless print image cannot be achieved with a film.
  • the use of films requires air conditioning and dust-free rooms in which the films are produced, processed and stored. This contributes to the high cost of this known method.
  • the surface of the printing form is coated with a photopolymer layer, the photopolymer layer is coated with a further sensitive coating with a sensitivity that is different and / or higher than that of the photopolymer layer, and the further coating is carried out by means of electronically stored data controlled beam, the positive or negative image of the desired print image of the printing form is transmitted directly; in its irradiated areas the coating is made opaque or translucent directly or by going through a development process or removed directly or by going through a selective one only the chemical and / or physical removal process acting on the irradiated areas is removed and through the photomask formed in this way the desired print image on the photopolymeric layer is polymerized and polymerized in the exposed areas thins out.
  • the above can be used for this described further known process flow up to
  • a method for producing an engraved gravure printing surface in which a powdered polymer preparation containing 0.5 to 10% by weight of carbon black is applied to a substrate by powder coating, the preparation into a continuous The layer melts and hardens, the layer is polished until it has non-printing properties, and the layer is engraved with a laser to form intaglio printing cells, the amount of soot being selected so that the engraving threshold value of the preparation is of a value at which the laser swelling and irregular printing properties in non-engraved areas is reduced to a value at which the laser causes no swelling in the non-engraved areas or does not cause swelling in the non-engraved areas.
  • a disadvantage of this process is that it leads to a printing form with a non-metallic printing surface.
  • This surface which is formed by the polymer preparation, does not have the high wear resistance, as it has, for example, a chrome-plated copper surface.
  • the outlay for the application, melting and hardening and polishing of the layer is also relatively high, so that in addition to the low wear resistance, a high outlay on the process also affects the economy of this process.
  • a laser engraving device is known from DE 42 12 390 AI, which is suitable, inter alia, for the production of gravure rollers. This known laser engraving device is, however, limited to those rollers in the production of printing rollers whose printing surface consists of plastic, rubber or ceramic.
  • DE 30 35 714 A1 discloses a method for producing an intaglio printing plate, which is characterized by the following steps: using a plate made of a material which permits engraving with an electronic engraving device and etching with a selected etching agent; Formation of a resistant to a selected etchant Layer of constant thickness on the plate; Generation of the cells reproducing the original copy in the plate by engraving the plate with an electronic engraving device through the layer resistant to the etchant and increasing the capacity of the cells to a desired size by etching the engraved plate with the selected etchant through the layer resistant to the etchant.
  • the material of the plate is preferably copper or a similar material; the electronic engraving device can engrave the cells with the aid of a stylus or pen or with the aid of a laser beam or by means of an electron beam. Regardless of the type of engraving device chosen, it must always be able to engrave the cells reproducing the original copy in the plate itself through the layer resistant to the etchant. When using gravers as the engraving device, the disadvantages described in the previous paragraph occur; If a laser beam or electron beam is to be used for the engraving of the cells through the coating, beams must be used with a power such that material is removed by evaporation from the material of the plate.
  • thermosensitive, acid and / or electrolyte-resistant coating is applied to the surface of the printing form
  • the coating is removed directly in desired areas of the surface by means of at least one electronically stored printed image and grid data position and power-controlled thermally active focused beam without the material of the printing form itself being removed
  • the parts of the coating that are still present are removed from the surface of the printing form by means of a chemical and / or physical removal process.
  • a mask is produced for the metal removal by etching or electrolysis, which mask offers a very high resolution and excellent contour definition.
  • the time required for the etching or electrolysis in gravure printing plate production is generally only between about 1 and 2 minutes, so that it is sufficient if the mask produced according to the invention withstands the acid or the electrolyte for this time .
  • the coating can also be applied relatively thinly, which facilitates removal in the desired areas by means of the thermally active jet.
  • the coating in the liquid state is applied by spraying or dipping and is dried or hardened. Spraying is particularly suitable for automated execution of the method. Both coating methods offer the advantage that the coating can be done with relatively little effort ⁇ can be applied to the surface of the printing form in a small but uniform layer thickness.
  • a colored coating is used, the color of which has an absorption spectrum matched to the wavelength (s) of the beam.
  • a varnish is preferably used as the coating, since this is a material for the handling and processing of which known methods and devices are available.
  • a solvent-based lacquer with binders, resin materials and dyes is advantageously used as lacquer.
  • Such a lacquer is, on the one hand, available at low cost and, on the other hand, can be processed using methods and devices known per se, so that this does not cause any particular problems if the lacquer is used within the method according to the invention.
  • a varnish has the advantage that it can be removed directly from the metallic surface of the printing form by the thermally active jet with relatively low energy, without incurring combustion residues to an annoying extent.
  • an advantage of such a varnish is that after curing or drying it still has a certain elasticity, which is particularly favorable for the etching or electrolysis process.
  • composition and / or viscosity of the coating it is preferably applied in a thickness between only 2 and 10 ⁇ m, preferably between 3 and 4 ⁇ m. 3
  • the coating with a thickness in the above-mentioned areas can be removed easily by the thermally active jet and at the same time is sufficiently resistant to reliably fulfill the required mask function during etching or electrolysis.
  • a laser beam is preferably used as the thermally active beam, because it is particularly well suited for bringing the required amounts of energy to a very small area of the coating in a very short time in order to burn or evaporate it there.
  • a Yag or CO * 2 laser is preferably used to generate the laser beam.
  • Such lasers are relatively inexpensive to purchase and operate and, on the other hand, offer the advantage of a compact and lightweight construction. Furthermore, their operation is particularly stable, so that this ensures a reliable execution of the method without the need for complex monitoring devices.
  • a modulator is preferably used to control the intensity of the beam acting on the coating, since this results in very rapid changes in the intensity of the beam when the beam source is operated in continuous wave mode, i.e. with relatively little effort. Continuous operation can be achieved.
  • the modulation frequency can be more than 10 MHz.
  • the focusing of the beam is carried out by an adjustable focusing device lc is variable.
  • the focusing device is preferably part of the device or beam source generating the beam, so that a compact design is maintained.
  • the focusing device allows the beam to be focused on a focus diameter of preferably at least 10 ⁇ m. This also defines the very high resolution that can be achieved by the method. Such a small focus diameter can be implemented with relatively little effort, in particular with the above-mentioned Yag laser.
  • the printing cylinder For the production of a printing form in the form of a printing cylinder, it is specifically provided that for the removal of the coating in the desired areas by the jet the printing cylinder is rotated at a speed of up to 2000 rpm about its longitudinal central axis and that at least one generating the jet Beam source is moved parallel to the longitudinal central axis of the printing cylinder.
  • This high speed in conjunction with the above-mentioned high possible modulation frequency, enables a relatively fast processing of a printing cylinder by means of the method according to the invention, although for the high resolution, correspondingly many small areas of the coating have to be removed.
  • any imbalances that occur during the rotation of the pressure cylinder are automatically balanced to a maximum re-vibration amplitude of 0.5 ⁇ m by means of adjustable compensating masses, and that the controlled method of the beam source is spatially parallel to the longitudinal center axis of the printing cylinder up to ⁇ 5 ⁇ m maximum deviation over the entire axial length of the printing cylinder // follows. This ensures in particular that the quality of the mask produced for the later etching process or the subsequent electrolysis remains the same over the entire area of the printing cylinder.
  • the axial length of the impression cylinder can be up to 6 m, for example.
  • Known and proven methods and devices within the method according to the invention can be used for the etching or the electrolysis for producing the intaglio printing wells in the metallic surface of the printing form.
  • the final removal of the remaining areas of the coating is also carried out in a known manner, e.g. by using solvents, by ultrasound or thermal removal. Since the method according to the invention does not require any light-sensitive or UV-sensitive materials, all of the process steps can be carried out under normal lighting or in daylight, which further simplifies the implementation of the method.
  • the gravure printing process is also used for particularly high-quality color printing, in which, among other things, a smooth transition from dark to light color areas without recognizable steps and without a recognizable grid is desired.
  • a smooth transition from dark to light color areas it is necessary to change the volume of the rotogravure cups that transfer the color from the dark color areas to the light color areas. areas downsize. This reduction in volume can be achieved by reducing the area and / or the depth of the rotogravure cups.
  • the coating is removed to such an extent that sufficient metal removal is effected by the etching or electrolysis;
  • the coating in the relevant desired area is expediently removed completely in order to ensure completely unimpeded access to the etching or electrolysis medium.
  • the volume of the respective grid cup is approximately proportional to the depth and is available for the reception of printing ink.
  • brightness variations of a color tone in the range between about 5% and 100% can be achieved in this way. In this way, a very good, stepless transition from light to dark color areas and vice versa can be achieved.
  • the desired depths for all gravure cups are stored electronically with the printed image and grid data in the form of electronic data and retrieved for the position and power control of the thermally effective beam.
  • the desired depths for all gravure cups are stored electronically with the printed image and grid data in the form of electronic data and retrieved for the position and power control of the thermally effective beam.
  • a method embodiment provides that the rotogravure screen is produced on a printing form with the same fineness and that all rotogravure cups of the printing form are produced with an area of the same size. In this way, a color range is changed from light to dark colors or vice versa solely by varying the depth of the grid cells without changing the area thereof. In particular, this offers the advantage that even in the brightest color areas of the printed image on the finished printed product, the gravure screen does not appear in an optically disturbing manner.
  • the gravure screen with different finenesses is produced on different printing areas in different surface areas of the printing plate surface.
  • a particularly fine gravure screen which requires a longer processing time in the production of the printing form than a less fine gravure screen, only has to be produced in the surface areas of the printing form where it is actually needed.
  • These areas in which a high degree of fineness of the gravure screen is desired are, for example, font representations in very fine lines; Areas of the printing form which are used for the production of, for example, colored images, on the other hand, manage with a smaller fineness of the rotogravure screen, without markedly reducing the quality of the finished printed product.
  • intaglio printing screen is also available in the form of electronic, ie digital, data
  • processing of the data can take place before processing the printing form. It has taken place that the transition from one fineness to another fineness of the rotogravure printer is not optically recognizable in the finished printed product.
  • the degree of removal of the coating in the desired areas, each corresponding to an intaglio printing raster is preferably controlled in that the removal takes place in the form of an additional raster which can be changed in density, positive or negative, the fineness of which compared to the fineness of the intaglio raster is at least a factor 3 higher. It is advantageously achieved in this way that only the working states "on” and "off" are further required for the thermally active beam, since this is either removed or left at each point of the coating.
  • the removed areas or the left areas of the coating can optionally represent the additional grid.
  • the density of the additional grid is defined here as the ratio between non-removed and removed areas of the coating, considered for the area of a grid cup.
  • the increased fineness of the additional screen compared to the gravure screen is necessary, on the one hand, to allow a sufficiently fine change in the depth of the screen cells produced and, on the other hand, to avoid "islands" within the screen cells after the etching or electrolysis process stop.
  • the surface area of the parts of the coating remaining within the additional grid in the desired areas respectively surrounding a grid well may therefore only be so large that they are completely “infiltrated” in the subsequent etching or electrolysis process during metal removal, so that they no longer keep a connection to the metallic printing form.
  • the parts of the coating which initially remain on the surface of the printing form to form the additional grid are thus removed during the etching or Electrolysis processes detached from the surface of the printing form and carried away with the etching or electrolysis medium.
  • the removed coating parts are expediently filtered out of the etching or electrolysis medium in a filtering process so that the effect of the etching or electrolysis medium is not impaired by the coating particles carried along.
  • an incomplete removal of the coating in the desired areas could also result from the fact that the coating is removed from the outside only over part of its thickness by the thermally active jet, and thus the coating with part of its original thickness on the surface Printing form surface remains.
  • the intermediate stages of the delivery of the thermally effective beam to be set and controlled for this purpose, with which a partial removal in terms of the thickness of the coating could be achieved, are technically considerably more complex and difficult to master.
  • the depth of the rotogravure cups produced in the later etching or electrolysis process can also be influenced in a targeted manner in this way.
  • FIG. 1 shows a printing form in the form of a printing cylinder in a schematic longitudinal section, partly in View, together with a device for generating a thermally active beam
  • FIG. 2 shows a detail from the surface of the printing form from FIG. 1 in a greatly enlarged illustration, after processing by the thermally active jet,
  • FIG. 3 shows a detail from the surface of a printing form after the removal of a coating in the desired areas, in a top view
  • FIG. 4a shows the printing form in partial section along the line IV-IV in FIG. 3,
  • FIG. 4b the printing form during an etching or electrolysis process
  • FIG. 4c the printing form at the end of the etching or electrolysis process
  • FIG. 5 shows another surface section of the printing form according to FIG. 3, likewise in a top view
  • FIG. 6 shows the surface section of the printing form from FIG. 5 in a partial section after an etching or electrolysis process.
  • FIG. 1 of the drawing shows a schematic representation of a printing form 1 designed as a printing cylinder, which carries an axle stub 11 on each of its two ends for storage during processing and during use in a printing press.
  • the printing form 1 is constructed rotationally symmetrical about its longitudinal center axis 10 and in the present example consists of solid metal.
  • the radially inner region 14, which comprises the largest part of the printing form 1, consists, for example, of steel, a copper layer 15 being applied to the outside of this region 14, for example by electroplating.
  • the printing form 1 shown here corresponds to known intaglio cylinders for rotogravure printing. Alternatively, a hollow cylindrical shape is also possible.
  • FIG. 1 shows a thin coating 2 on the surface 12 of the printing form 1, which is shown exaggeratedly thick here in order to make it optically recognizable.
  • the coating 2 here consists of a black lacquer, which is applied to the surface 12 of the printing form 1 by spraying or dipping and is then dried or hardened.
  • FIG. 1 In the upper right part of FIG. 1 there is also shown a laser 3 which, in connection with a focusing device 30, generates a laser beam 31 which emerges in a focused manner from the focusing device 30, so that the focus of the beam 31 on the coating 2 lies.
  • the coating 2 can be removed directly in the desired areas 22 by means of the laser beam 31, this being done by combustion or evaporation, since the beam 31 brings a correspondingly high amount of energy into the coating 2 in a very small area.
  • material has not yet been removed from the surface of the printing form 1 itself. In areas 20 of the coating 2, this remains on the surface 12 of the printing form 1.
  • the laser 3 When the coating 2 is processed, the laser 3 is moved exactly parallel to the longitudinal axis 10 of the printing form 1 in the direction of the movement arrows 39, 39 'relative to the printing form 1. At the same time, the printing form 1 is rotated about its central longitudinal axis 10 in the direction of the arrow 19 during processing.
  • the laser 3 can be controlled via a control line 32 by a control unit (not shown here), in particular with regard to the intensity of the beam 31 and the movement of the laser 3 in the direction of the movement arrows 39, 39 '.
  • the intensity of the beam 31 is preferably controlled by modulation by means of a controlled modulator in the beam path, the corresponding control data preferably being obtained from a digitally stored data record which is based on the data Coating 2 contains print and raster image to be transmitted.
  • this data set can be obtained by scanning a template or by purely digital generation in image processing systems.
  • the metallic surface 12 of the outer copper layer 15 of the printing form 1 is exposed.
  • the remaining areas 20 of the coating 2 now form a mask.
  • the intaglio printing cups are then produced in the desired distribution in the copper layer 15 in a known manner. Subsequently, the coating 2 is completely removed in the remaining areas 20, which previously formed the mask for the etching or electrolysis process. Immediately after or after an additional surface coating, for example chrome plating, to reduce wear, the print-ready printing form 1 is then available. 2o
  • FIG. 2 shows an enlarged view of a section of the coating 2 after it has been processed in the manner described above.
  • the coating 2 is present unchanged in the areas 20; in the areas 22 the coating 2 is completely removed by the jet 31. Since this is the production of a printing form for gravure printing, the removed areas 22 of the coating are designed in the form of approximated squares, between which the ridges 21 formed by the remaining coating 2 run.
  • areas 22 ' can also be produced in which the coating 2 has been removed, but not in the form of a full-area raster element, but only a partial area thereof. In this way, a very exact, particularly contour-sharp print representation is made possible, which is illustrated here by the letter "A".
  • the sharpness of the contours of the intaglio cells in the metallic surface of the printing form 1 is even improved compared to the sharpness of the raster webs 21 because the etching or electrolysis process has a balancing effect and reinforces protruding corners or edges be etched away.
  • Overall, very uniform and sharp-contoured gravure raster cells result in the surface of the printing form 1.
  • the surface of the printing form 1 is initially covered with the coating 2 over the entire area. Subsequently, this coating 2 is removed directly in the desired areas of the surface. While ZI in the previously described process design
  • the process variant described below provides for incomplete removal of the coating 2 in the desired areas 22.
  • the state of the surface of the printing form 1 after this deliberately incomplete removal process is shown in FIG. 3.
  • the areas 21 depict the contours of gravure raster webs which should remain on the surface of printing form 1 between the gravure raster cups to be subsequently produced.
  • the areas 21 form a regular grid of lines crossing at right angles, as is known as a gravure grid. In practice, the width of the linear regions 21 is down to a few ⁇ m. The fineness of the gravure screen is given in lines per cm.
  • Areas 22 in which the coating 2 is more or less completely removed are delimited by the areas 21 in which the coating 2 is still present.
  • the coating 2 is removed in the regions 22 apart from a number of punctiform coating residues 21 '.
  • the points 21 / form a regular point grid of relatively low density in FIG. 3.
  • the points 21 ', in which the coating 2 was still left on the surface of the printing form 1, are turned off by briefly switching off the thermally active jet when the corresponding surface areas of the printing form 1 or the coating 2 applied to it are covered generated.
  • FIG. 4a shows, in partial section along the line IV-IV in FIG. 3, a section of the printing form 1 near the surface, the outer layer of which is formed here by a copper layer 15.
  • the areas 21 and 21 'in which the coating has not been removed lie on the surface of the copper layer 15. As FIG. 2a clearly shows, the coating in the areas 21 and 21 'has a uniform thickness which corresponds to the original thickness dimension of the coating 2. The areas 22 in which the coating is removed lie between the areas 21, 21 '.
  • FIGS. 3 and 4a furthermore illustrate that the surface area of the punctiform areas 21 'is relatively small in relation to the area area of the areas 21.
  • FIG. 4b shows the printing form 1 during an etching or electrolysis process, in which, by means of an etching or electrolysis medium, metal is removed in order to produce gravure cups.
  • the etching or electrolysis medium flows in the direction of the flow arrows 5 over the surface of the printing form 1, wherein as intensive an etching or electrolysis as possible is desired in order to achieve a uniform removal of metal and a rapid removal of removed metal portions.
  • depressions are formed in the copper layer 15, which grow over time both in their depth and in their lateral extent, since the metal removal proceeds both perpendicularly and parallel to the surface of the copper layer 15.
  • the access of the etching or electrolysis medium to the copper layer 15 is specifically hindered or slowed to a certain extent. This results in a slowing down of the metal removal from the copper bar 15 in comparison to one Surface completely freed from any coating 2.
  • FIG. 4c furthermore shows that the areas 21 'of the coating which initially still remained on the surface of the copper layer 15 of the printing form 1 are completely detached from the printing form 1 at the end of the etching or electrolysis process.
  • the surface of the printing form 1 can be chrome-plated to increase the mechanical resistance.
  • FIG. 5 of the drawing shows, in the same manner as FIG. 3, a section from the surface of the printing form 1, in which a gravure printing cup with a smaller depth is to be produced.
  • This area • 21 of the printing form 1 is used for generating al ⁇ o niethix Druckndu ⁇ area with a lighter color tone is achieved by a ge ringeres volume de ⁇ gravure cell.
  • the regular gravure raster is also defined in this area of the surface of the printing form 1 by the remaining web-shaped areas 21 of the coating 2, the fineness of the gravure raster and the width of the areas 21 agreeing with those according to FIG. 3.
  • the coating 2 is also incompletely removed here, with point-like areas 21 ′ of the coating 2 again being left on the surface of the printing form 1 within the areas 22 have been.
  • the punctiform areas 21 ' are provided with a significantly greater density. This means that, averaged over the area of the area 22, there was only a smaller removal of the coating 2 than was the case in the example of the area 22 according to FIG. 3.
  • the regions 21 'of the coating 2 shown in the drawing can also have the shape of a geometric grid with surfaces and / or lines or a frequency-modulated grid or a crystal grid.
  • the regions 21 ' can also be varied not only in terms of their density, but also in terms of their surface extension.
  • the fineness of the rotogravure screen as well as the width of the rotogravure raster webs can be varied if necessary by changing the data stored therefor, which is also possible within a printing form.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Abstract

L'invention concerne un procédé de production d'une forme (1) métallique pour impression en héliogravure, comportant les étapes suivantes: on applique sur la surface (12) de la forme (1) un revêtement (2) thermosensible à l'épreuve des acides et/ou des électrolytes; le revêtement (2) est immédiatement enlevé dans les zones souhaitées (22) de la surface (12) au moyen d'au moins un rayon (31) concentré à effet thermique dont la position et la puissance sont commandées selon des données relatives à l'image d'impression et à l'écran mémorisées électroniquement, sans que cela n'entraîne pour autant un enlèvement de matière sur la forme (1); un enlèvement de métal est réalisé par attaque ou électrolyse dans les zones (22) de la surface (12) de la forme (1) dont le revêtement (22) a été enlevé, afin de produire les creux d'impression, et les parties (20) de revêtement (2) encore présentes sont enlevées de la surface (12) de la forme (1) par un procédé chimique et/ou physique.
PCT/EP1996/005310 1995-11-28 1996-11-27 Procede de production d'une forme metallique pour impression en heliogravure WO1997019816A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU10959/97A AU1095997A (en) 1995-11-28 1996-11-27 Method of producing a metal printing forme for rotogravure printing

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19544272.5 1995-11-28
DE1995144272 DE19544272C2 (de) 1995-11-28 1995-11-28 Verfahren zur Herstellung einer metallischen flächenvariablen Tiefdruckform
DE1996112100 DE19612100B4 (de) 1995-11-28 1996-03-27 Verfahren zur Herstellung einer metallischen Tiefdruckform
DE19612100.0 1996-03-27

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Publication Number Publication Date
WO1997019816A1 true WO1997019816A1 (fr) 1997-06-05

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DE (1) DE19612100B4 (fr)
WO (1) WO1997019816A1 (fr)

Cited By (4)

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WO1999021714A1 (fr) * 1997-10-24 1999-05-06 R.R. Donnelley & Sons Company Procedes de gravure de cylindres d'heliogravure
EP1629994A2 (fr) 2004-08-27 2006-03-01 Austria Card Plastikkarten und Ausweissysteme GmbH Feuille métallique en relief avec une structure tridimensionelle pour la fabrication de documents utilisant une presse de laminage chaude froide
WO2012116847A1 (fr) * 2011-03-01 2012-09-07 Thyssenkrupp Rasselstein Gmbh Procédé d'affinement d'un revêtement métallique sur une bande d'acier
DE202004021955U1 (de) 2004-08-27 2013-07-16 Credit Card Supplies Prägeblech mit dreidimensionaler Struktur zur Herstellung von Dokumenten mittels Heiß-Kalt-Laminierpresse

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Publication number Priority date Publication date Assignee Title
US5947020A (en) * 1997-12-05 1999-09-07 Ohio Electronic Engravers, Inc. System and method for engraving a plurality of engraved areas defining different screens
DE20122748U1 (de) * 2001-12-05 2008-02-14 Constantia Hueck Folien Gmbh & Co. Kg Druckwerkzeug und dessen Verwendung zum Verdrucken von insbesondere hochviskosen und/oder hochpigmentierten Lacken und Farben
DE10159539A1 (de) * 2001-12-05 2003-06-26 Hueck Folien Gmbh & Co Kg Verfahren zur Herstellung eines Druckwerkzeugs, Druckwerkzeug und dessen Verwendung zum Verdrucken von insbesondere hochviskosen und/oder hochpigmentierten Lacken und Farben
DE102004059305A1 (de) * 2004-12-09 2006-08-17 Hueck Folien Gmbh & Co. Kg Kupferstiche in Tiefdruckzylindern
EP1719633B2 (fr) 2005-05-03 2014-03-12 Merck Patent GmbH Utilisation de formes d'impression gravées par laser.

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WO1999021714A1 (fr) * 1997-10-24 1999-05-06 R.R. Donnelley & Sons Company Procedes de gravure de cylindres d'heliogravure
US6048446A (en) * 1997-10-24 2000-04-11 R.R. Donnelley & Sons Company Methods and apparatuses for engraving gravure cylinders
EP1629994A2 (fr) 2004-08-27 2006-03-01 Austria Card Plastikkarten und Ausweissysteme GmbH Feuille métallique en relief avec une structure tridimensionelle pour la fabrication de documents utilisant une presse de laminage chaude froide
US7757538B2 (en) 2004-08-27 2010-07-20 Austria Card Plastikkarten Und Ausweissysteme Gmbh Embossing plate with a three-dimensional structure for the production of documents by a hot-cold laminating press
DE202004021955U1 (de) 2004-08-27 2013-07-16 Credit Card Supplies Prägeblech mit dreidimensionaler Struktur zur Herstellung von Dokumenten mittels Heiß-Kalt-Laminierpresse
WO2012116847A1 (fr) * 2011-03-01 2012-09-07 Thyssenkrupp Rasselstein Gmbh Procédé d'affinement d'un revêtement métallique sur une bande d'acier
CN103476967A (zh) * 2011-03-01 2013-12-25 蒂森克虏拉塞斯坦有限公司 用于增强钢带上的金属涂层的方法

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