EP1262315B1 - Verfahren und Vorrichtung zur Herstellung einer Druckform - Google Patents
Verfahren und Vorrichtung zur Herstellung einer Druckform Download PDFInfo
- Publication number
- EP1262315B1 EP1262315B1 EP01112705A EP01112705A EP1262315B1 EP 1262315 B1 EP1262315 B1 EP 1262315B1 EP 01112705 A EP01112705 A EP 01112705A EP 01112705 A EP01112705 A EP 01112705A EP 1262315 B1 EP1262315 B1 EP 1262315B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- beams
- printing block
- relief
- track
- block blank
- 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
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000007639 printing Methods 0.000 title claims description 123
- 239000000463 material Substances 0.000 claims abstract description 20
- 230000005855 radiation Effects 0.000 claims description 22
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 239000002861 polymer material Substances 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 10
- 239000013013 elastic material Substances 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 claims description 2
- 230000003595 spectral effect Effects 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 206010073306 Exposure to radiation Diseases 0.000 claims 3
- 238000010276 construction Methods 0.000 claims 2
- 230000003628 erosive effect Effects 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 abstract description 5
- 238000012545 processing Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 210000001624 hip Anatomy 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- HEFNNWSXXWATRW-UHFFFAOYSA-N Ibuprofen Chemical compound CC(C)CC1=CC=C(C(C)C(O)=O)C=C1 HEFNNWSXXWATRW-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
- B41B19/00—Photoelectronic composing machines
-
- 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 invention relates to a method and an apparatus for manufacturing a printing form according to claims 1 and 17.
- a printing form can it be z.
- B. a flexographic printing form or a rigid printing form act as letterpress or gravure forms, and the like.
- a printing plate which can be a polymer plate, for example, in order to produce a relief in the printing plate in this way in order to produce a flexographic printing plate with the aid of a conventional CO 2 laser.
- the CO 2 laser is permanently power-modulated, so that the method is relatively slow.
- This US-A-5,427,026 also discloses an apparatus for manufacturing a Printing form with a holder for holding a printing form blank, one optical device for irradiating a surface of the printing form blank along a track by means of at least one beam, to thereby pass areas remove the printing form blank, and with a control device, the using a data file contained beam on and off commands Changes in intensity of the at least one beam along its path controls the track, the control device being designed so that it several data files each containing beam switch-on and switch-off commands Provides, each for processing the printing blank serves along the entire track, and which is offset in time with respect to the track are workable.
- the invention has for its object a method for producing a Printing form. in particular a flexographic printing plate to specify with which very small structures surrounded by deep cuts quickly and just have it made.
- a suitable for this purpose Device will be provided.
- the method according to the invention is characterized by this. that the irradiation done with multiple beams. the one after the other along the same Track and the multiple beams in one direction next to each other are arranged horizontally, which runs transversely to the longitudinal direction of the track.
- a relief introduced that material of Printing blank is removed along traces by radiation, So by radiation that z. B. is switched on and off, for example by Modulators, e.g. B. acousto-optical modulators, light deflectors, such as movable Mirrors, etc. to change the intensity of the radiation.
- Modulators e.g. B. acousto-optical modulators, light deflectors, such as movable Mirrors, etc.
- the removal occurs because along one and the same Track differently deep relief areas by accordingly frequent irradiation are generated. It can focus radiation be used or parallel radiation, provided they are for the named Purpose is intense or powerful enough.
- the beam power can be relatively low be, which means that even very fast modulators and switching off the beam power can be used in their Use the beam power just needs to be limited to the To protect modulators from destruction, such as acousto-optic modulators. So it is possible to also be relatively fine and to be able to quickly develop deep structures at the same time to create reliefs to be able to manufacture with even better quality. This also applies in particular in view of the fact that between the individual burning processes the printing plate material when forming the deeper structural areas cools down again before it is removed again, which leads to that the printing form material does not heat up so much in these areas, so that the relief is extremely precise or true to form leaves. The material removal can occur between the individual burning processes also be dissipated, e.g. B. be sucked off, which is a more accurate Working at the next removal process enables and qualitatively better Structures leads.
- the relief delimits material areas on the surface side of the printing form blank first removed in this way the relief contours at a relatively low temperature of the blank to be able to determine. Only then is the further removal of the Printing blank for the formation of the lower areas.
- the approach is to use very precise surface borders of the relief. In principle, however, the reverse procedure is also used possible that the surface-side borders of the relief be formed last.
- the relief surface is on the side limiting material areas of the printing form blank in their spectral sensitivity to the wavelength of the abrading radiation adjusted, which affects the removal process of these material areas controls even better to get reliefs with even greater precision receive.
- the irradiation of the Printing blank with laser radiation because in this way the required Radiant energy can be easily provided.
- focused laser radiation can be used.
- the Beams or laser beams are moved relative to the printing form blank, or it is proceeded in such a way that the printing form blank is relatively stationary Blasting is moved.
- the jets and blank can also be used both and are moved relative to each other.
- a printing blank that has a printing surface has forming elastic material, such as polymer material, silicone or rubber.
- the printing surface could also be rigid, for example are made of metal.
- a plate-shaped printing form blank made of polymer material or other suitable elastic material on the surface a rotatably mounted cylinder and firmly attached there are, for example by clamping, by suction using a vacuum, by Magnets, etc.
- elastic can also be used or polymer material on the surface of a rotatably mounted Cylinders are drawn up or applied. This can be e.g. B. are hoses that are pulled onto the cylinder, or it can liquid material or polymer material by knife, spray and Diving, etc., are applied.
- the irradiation takes place of the printing form blank along a respective track depending of data files, one of which is one of the different ones Depth relief areas to be removed is assigned.
- the removal the material areas of the printing form blank are therefore purely digital controlled so that changes in radiation power are carried out very quickly can be what accelerates the machining process.
- the Data files can also be combined into an overall file that contains the data files as links in a chain, which are processed one after the other become.
- the data files Invention produced as follows: Education and electronic storage of a basic two-dimensional relief pattern; Formation of one or more in different borders to the basic relief pattern for marking relief areas that increase with increasing Distance from the basic relief pattern should be lower; Drawing a track by the bordered basic relief pattern; Searching for boundaries of the Relief basic pattern and the relief areas based on the borders on the track; and setting beam on and off commands based on the boundaries found and sorted into respective data files for the basic relief pattern and the lower-lying relief areas.
- the basic relief pattern is specified, for example by scanning a template or by graphic design from a designer on the screen of a computer, so with a given track width and Traces of the tracks relative to the basic relief pattern to be removed in the blank in different depths Create areas in a very simple way, in an automated way, which also speeds up the process.
- the respective data files are used for modulation or for switching on / off of rays.
- these could be Data files are used to control acousto-optical modulators, with the help of which the beams or laser beams are switched on and off become, and the functioning of which is generally known.
- the respective data files can be different Control voltages assigned to modulate the beams to be one of the respective when using a respective data file Use control voltages to control a modulator.
- the respective Control voltage is then in accordance with the data file connected. This switched control voltage then reaches the modulator.
- a device for producing a printing form
- a flexographic printing form contains a holder for holding a Printing form blank; an optical device for irradiating a Surface of the printing form blank along a track by means of at least a beam to thereby ablate areas of the printing form blank; and a controller that uses a beam on and off commands contained data files corresponding changes in intensity of the at least one ray on its way along the track controls.
- the control device is designed so that it has several each Data files containing beam switch-on and switch-off commands (sample information) provides, each of which is used for processing the printing form blank serves along the entire track, and which is offset in time with respect to the track are workable.
- the data files related to one and the same track can go along areas the track may be exposed to radiation one or more times, accordingly to get shallower or deeper areas along the track so that it is possible very short in the longitudinal direction and create deep recesses in order to be very to obtain precise reliefs in the surface of a printing form blank.
- the optical device trained so that she outputs several beams, each with only a separate data file are controllable.
- all rays must be on the same track go through one after the other.
- the rays are juxtaposed in one direction which runs transverse to the longitudinal direction of the track, so that by appropriate Shifting the beams in the transverse direction one after the other Cover with the track can be brought.
- Focused rays such as focused rays, can be used as rays Laser beams.
- the printing form blank can be a plate-shaped blank or be a cylindrical printing form blank. At least he's at his Surface elastic and preferably consists of polymer material or at least contains one. But it can also be made of silicone, Rubber or other material, such as metal.
- this can be done in the form of a plate Training, for example, can be processed in a flat state if Rays guided along tracks and kept parallel to him at a distance become. Radiation sources and blank blank could then be in parallel planes are shifted relative to each other.
- the printing form blank designed as a cylinder rotatably mounted about its longitudinal axis, which has an elastic material on its surface, for example polymer material. wearing.
- This can be plate-shaped and around its Surface. It is in the form of a plate on the cylinder surface attached, the plate can be removed from this after processing can also be removed to be used as a flat pressure plate become.
- the elastic or polymer material can also be firmly on the Surface of the cylindrical carrier remain after it is on it has been raised or applied in another form, such as by a Dipping, doctoring or spraying, and the like. In this case later the entire cylinder was used as an impression cylinder.
- the surface relief When processing or irradiating the printing cylinder for generation the surface relief can be rotated while at the same time a slidably arranged in the direction of the longitudinal axis of the cylinder Carriage is moved, the at least parts of the optical device wearing.
- This slide can be used, for example, to deflect mirrors of laser beams, or laser sources can be directly on it be mounted. It is also possible when the cylinder rotates around its longitudinal axis this also in the direction of its To move the longitudinal axis to the surface of the printing form blank to be able to edit fixed positioned optical equipment. This variant would be advantageous if the optical device itself from a Variety of radiation sources for generating a variety of rays exists and therefore a misalignment by vibrations is relatively large.
- modulators are provided for switching the beams on and off are that can be controlled via the data files.
- it can are preferably acousto-optic modulators that are very can be controlled quickly.
- Each of the modulators is equipped with at least one analog switch connected, via which the modulator one of the pattern information appropriate control voltage can be supplied, the analog switch through which the data file can be switched. This makes a very precise digital Control of the processing beam or laser beam possible.
- modulators each of which is assigned an analog switch is, each by one of the for engraving along a track required multiple data files can be switched, the analog switch switch different control voltages.
- FIG. 1 denotes a printing form blank, which is made of polymer material is made.
- a flexographic printing plate becomes a relief engraved in a surface 2 of the printing form blank 1 by using Help from z. B.
- three focused laser beams 3, 4 and 5 polymer material the printing form blank 1 is burned away in some areas. It could more or less than three laser beams can also be used.
- the laser beams 3, 4 and 5 are sequentially along in time a track running on the surface 2 moves in the direction arrow 6 runs.
- the laser beam 3 is the leading laser beam and acts on the surface 2 of the printing form blank 1 first.
- the laser beam is used first 1 the upper section A of the printing form blank 1 burned away while a short time later the section lying below the bottom of section A. B is burned away using the laser beam 4. At even deeper Recess becomes after using the laser beam 4 below the floor Section C of section B with the aid of the laser beam 5 burned away, etc.
- the laser beams 3, 4 and 5 create relief areas, in which relatively deep recesses are created should be irradiated several times in succession in order to be successive in time Steps the bottom of the first recess burn further away or dig.
- the printing form blank according to FIG. 1 can be, for example, one act as a plate-shaped blank that is processed in a flat state, or around a cylindrical printing form blank, for example on the Surface of a rotatably mounted cylinder lies and from this again is removable.
- the cylinder itself could also be used as a blank be referred to when it is on its surface, for example with polymer material would be coated.
- the laser beams 3, 4 and 5 could have different powers according to an embodiment of the invention.
- the leading laser beam 3 could, for example, have a lower power than the two lagging laser beams 4 and 5, in order to be able to use the laser beam 3 to better define the edges of the relief at a relatively low power. Lower-lying areas of recesses could then be burned away with the more powerful laser beams 4 and 5.
- a CO 2 laser beam with 100 watts could be used as laser beam 3
- laser beams 4 and 5 are CO 2 lasers each with 200 watts.
- the laser beams themselves are focused using lenses 7, 8 and 9, which is why these lenses can be in the same plane, for example, however have different focal lengths, depending on the depth of the laser beams area to be burned.
- the lens 7 has the shortest Focal length and the lens 9 the longest focal length.
- FIG. 2 shows a variant of the principle shown in FIG. 1.
- an upper region 10 of the printing form blank 1 and the laser beam 3 for processing this upper region 10 are spectrally matched to one another.
- the surface of the printing form blank 1 is coated in the upper region 10 with a corresponding material which is particularly sensitive to the wavelength of the laser beam 3.
- the laser beam 3 can z. B. generated by a YAG laser whose wavelength is 1.060 microns.
- the beam itself can have an output of 50 to 100 watts.
- a beam waist in the focus of approximately 10 ⁇ m is obtained, so that extremely fine structures can be produced in the surface area of the printing form blank 1.
- the material in the area 10 must be selected so that it can be easily burned away by the laser beam 3.
- the remaining laser beams 4 and 5 can in turn be generated by CO 2 lasers of 200 watts each, in order to be able to burn away deeper areas at a distance from the relief edges. Not so high accuracy is required here, so that beam waists of 30 to 35 ⁇ m in the focus area can be accepted.
- Figures 1 and 2 show how the relief structures socketed become.
- the laser beams 3, 4 and 5 in the track direction 6 on different places in the track direction 6 switched off. It follows then a stair-shaped base course, the slope of the flanks corresponds approximately to the course of the focused laser radiation.
- the base flanks are designated in Figures 1 and 2 with 11, 12 and 13.
- FIG. 3 shows a basic relief pattern 14 in the form of a uniformly blackened pattern Range.
- This basic relief pattern 14 represents the printing Area and must be on the circumferential side of lower lying areas 15, 16 and 17 be surrounded. The material of the printing form blank 1 must therefore be in areas 15, 16 and 17 are burned away.
- the resulting one Structure can be seen in Figure 4. This is a cross section along the line A-A in Figure 3.
- the one shown in FIG. 3 is used to switch the laser beams on and off Relief basic pattern 14 used.
- the basic relief pattern can be shown first and in an electronic Memory can be cached. Then there are traces set on which the laser beams are guided when the relief is engraved. It is assumed that line A-A in Figure 3 is such a trace.
- the basic relief pattern 14 can be previously or then be provided with borders 18, 19, inside and outside to define the areas 15, 16, 17 in which the material of the Printing blank 1 to be burned away. At the intersections the track A-A in Figure 3 with the basic relief pattern or the borders 18, 19 then there are switch-on points for the laser beams which, sorted according to the areas to be combined into data files.
- the data files D3, D4 and D5 each have values "1" and "0" and serve for controlling acousto-optical modulators, which in turn are used for Switching the laser beams 3, 4 and 5 can be used.
- the beginning of a Track in Figure 5 at X 0, so that the first time through the track using the Laser beam 3 burned the areas 17, 16 and 15 over the section A. until the laser beam 3 is switched off at X3.
- the switch-on and switch-off points or data files can be made after production the borders 18 and 19 and defining the track A-A and the track direction generated automatically with the help of suitable computer programs become.
- FIG. 6 shows the structure of a device according to the invention Production of a printing form, such as a flexographic printing form.
- the device includes a laser engraver with a machine bed 20.
- the one to be engraved is here hollow-cylindrical trained printing blank 1 rotatably mounted.
- the Printing blank 1 on a central shaft 20a on the machine bed 20 designated camps is added.
- a motor 21 the printing form blank 1 can be rotated about its central axis.
- Encoder 22 or rotary pulse generator is used to generate pulses, which correspond to the respective rotational position of the printing form blank 1.
- a carriage 23 is on guides 24 parallel to the axis of the printing form blank 1 moves.
- a screw 25 is used to drive this Carriage 23 along the guides 24, the screw 25 is rotated in one direction or the other via a drive 26 to take the carriage 23 accordingly.
- Each of these lasers has its own shutter, its own modulator and assigned its own lens system.
- the machine control 33 is provided to control the operation of the system. which via control lines with the lasers 27a-27c, the modulator 30, the rotary drive 26, the motor 21 and the rotary encoder 22 connected is.
- CAD system 34 which is connected to a control computer 35, which in turn is used for control the machine control 33 is used.
- a designer can view the associated screen design a pattern, such as the basic relief pattern shown in FIG. 3 14.
- the designer can then use the appropriate commands on the CAD system 34 borders 18 and 19 relative to the basic relief pattern 14 Define the areas in which the surface of the printing form blank 1 should be removed outside the basic relief pattern.
- the designer can also determine the track A-A in Figure 3, along later the printing form blank 1 is to be engraved.
- the CAD system 34 calculates then the pattern information or data files shown in FIG. 5, where the number of data files corresponds to the number of areas that are removed should be. This is done using, as already stated several successively used Laser beams take place.
- the sample information or data files D3 to D5 then become the control system from the CAD system 34 35 transferred and stored there, eventually to be processed to be fed to the machine control 33.
- This ensures the rotation the printing form blank 1 about its central axis, for the corresponding Displacement of the carriage 23 along the laser beams 27a-27c the predetermined track on the surface of the printing form blank 1 lead, and for switching the laser beams 27a-27c on and off in accordance with the data files D3 to D5 using the modulators 30a-30c, which are designed here as acousto-optical modulators.
- the focused laser beams 28a to 28c run up helical traces over the surface of the printing form blank 1.
- the focused laser beam 28a goes ahead and initially engraves Surface areas that correspond to areas A in Figure 4.
- the focused laser beam 28b travels along it helical trace, engraving areas that match the areas B in Figure 4 correspond.
- the same track will be focused Laser beam 28c swept to cover the areas along the track engrave that correspond to areas C in Figure 4.
- the power of the focused laser beams control by about different high voltages at the control input of the acousto-optic modulators created and in accordance with the corresponding data files be switched. Block operation would also be possible here only cylindrical tracks can be traversed.
- FIG. 7 A second embodiment of the device according to the invention is shown in Figure 7.
- the carriage 23 is fixed here, so it is no longer in the longitudinal direction of the cylinder-shaped printing form blank 1 is displaceable. Rather, the printing form blank 1 is now in its cylinder longitudinal direction slidably mounted, for which purpose it is now arranged on the guides 24 is and z. B. is driven by means of the screw 25, the in turn rotated in one direction or the other by the rotary drive 26 becomes.
- This arrangement is advantageous if a large number of lasers are used at the same time Machining of the printing form blank 1 can be used because this multitude of lasers is then no longer stable and low-vibration enough to be transported on a movable carriage.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
- Laser Beam Processing (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Manufacturing Of Printed Wiring (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Printing Methods (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
Claims (27)
- Verfahren zur Herstellung einer Druckform, bei dem in die Oberfläche eines Druckformrohlings (1) ein Relief dadurch eingebracht wird, daß Material des Druckformrohlings (1) entlang von Spuren durch Strahlung abgetragen wird, wobei entlang jeweils ein und derselben Spur unterschiedlich tief liegende Reliefbereiche (A, B, C) durch entsprechend häufiges Bestrahlen erzeugt werden,
dadurch gekennzeichnet, daß das Bestrahlen mit mehreren Strahlen (3, 4, 5) erfolgt, die nacheinander entlang derselben Spur geführt werden, und
die mehreren Strahlen in einer Richtung nebeneinander liegend angeordnet sind, die quer zur Längsrichtung der Spur verläuft. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß unterschiedlich tief liegende Reliefbereiche (A, B, C) durch Strahlen unterschiedlicher Leistung abgetragen werden.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß unterschiedlich tiefliegende Reliefbereiche (A, B, C) durch Strahlen unterschiedlicher Wellenlänge abgetragen werden.
- Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß unmittelbar an der Oberfläche (2) des Druckformrohlings (1) liegende Reliefbereiche (A) durch Strahlen abgetragen werden, deren Leistung geringer und/oder deren Wellenlänge kürzer ist als die derjenigen Strahlen, die zum Abtragen tiefer liegender Reliefbereiche (B, C) dienen.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Relief oberflächenseitig begrenzende Materialbereiche des Druckformrohlings zuerst abgetragen werden.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Relief oberflächenseitig begrenzende Materialbereiche (A) des Druckformrohlings (1) in ihrer spektralen Empfindlichkeit an die Wellenlänge der abtragenden Strahlung angepaßt sind.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Bestrahlung des Druckformrohlings (1) mit Laserstrahlung, z. B. fokussierter Laserstrahlung erfolgt.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Strahlen relativ zum Druckformrohling (1) bewegt werden.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Druckformrohling (1) relativ zu ortsfesten Strahlen bewegt wird.
- Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß ein Polymermaterial aufweisender Druckformrohling bestrahlt wird.
- Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß ein plattenförmiger Druckformrohling aus Polymermaterial auf die Oberfläche eines drehbar lagerbaren Zylinders gelegt wird.
- Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß zur Bildung eines Druckformrohlings (1) Polymermaterial auf die Oberfläche eines drehbar lagerbaren Zylinders aufgezogen bzw. aufgetragen wird.
- Verfahren nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß das Bestrahlen des Druckformrohlings (1) entlang einer jeweiligen Spur in Abhängigkeit von Datenfiles (D3, D4, D5) erfolgt, von denen jeweils eines einem der in unterschiedlicher Tiefe liegenden, abzutragenden Reliefbereiche (A, B, C) zugeordnet ist.
- Verfahren nach Anspruch 13, dadurch gekennzeichnet, daß die Datenfiles (D3, D4, D5) wie folgt erzeugt werden:Bildung und elektronische Speicherung eines zweidimensionalen Relief-Grundmusters (14);Bildung einer oder mehrerer in unterschiedlichem Abstand zum Relief-Grundmuster liegenden Umrandungen (18, 19) zur Kennzeichnung von Reliefbereichen (15, 16, 17), die mit zunehmendem Abstand vom Relief-Grundmuster (14) tiefer liegen sollen;Ziehen einer Spur (A-A) durch das umrandete Relief-Grundmuster (14) ;Aufsuchen von Grenzen (X3, X4, X5) des Relief-Grundmusters (14) und der Reliefbereiche (15 bis 17) anhand der Umrandungen auf der Spur; undFestsetzen von Strahlein- und -ausschaltbefehlen anhand der aufgefundenen Grenzen und in jeweilige Datenfiles (D3, D4, D5) sortiert für das Relief-Grundmuster (14) und die tiefer liegenden Reliefbereiche (15 bis 17).
- Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß die jeweiligen Datenfiles (D3 bis D5) zur Modulation der Strahlen herangezogen werden.
- Verfahren nach Anspruch 15, dadurch gekennzeichnet, daß den jeweiligen Datenfiles (D3 bis D5) jeweils unterschiedliche Steuerspannungen zur Modulation der Strahlen zugeordnet sind.
- Vorrichtung zur Herstellung einer Druckform, miteiner Halterung zum Halten eines Druckformrohlings (1);einer optischen Einrichtung (27) zum Bestrahlen einer Oberfläche (2) des Druckformrohlings (1) entlang einer Spur mittels wenigstens eines Strahls (28), um dadurch Bereiche des Druckformrohlings (1) abzutragen; undeiner Steuereinrichtung, die unter Verwendung eines Strahlein- undausschaltbefehle enthaltenden Datenfiles Intensitätsänderungen des wenigstens einen Strahls auf seinem Weg entlang der Spur steuert, wobei
dadurch gekennzeichnet, daß die optische Einrichtung so ausgebildet ist, daß sie mehrere Strahlen (28a bis 28c) ausgibt, die durch jeweils nur eines der Datenfiles (D3 bis D5) steuerbar sind, und
daß die Strahlen in einer Richtung nebeneinander liegend angeordnet sind, die quer zur Spurlängsrichtung verläuft. - Vorrichtung nach Anspruch 17, dadurch gekennzeichnet, daß die Strahlen Laserstrahlen sind.
- Vorrichtung nach Anspruch 14 oder 18, dadurch gekennzeichnet, daß der Druckformrohling (1) als ein um seine Längsachse drehbar gelagerter Zylinder ausgebildet ist, der auf seiner Oberfläche ein elastisches Material, z. B. Polymermaterial, trägt.
- Vorrichtung nach Anspruch 19, dadurch gekennzeichnet, daß ein in Richtung der Längsachse des Zylinder verschiebbar angeordneter Schlitten (23) vorhanden ist, der wenigstens Teile der optischen Einrichtung trägt.
- Vorrichtung nach Anspruch 19, dadurch gekennzeichnet, daß der Zylinder in Richtung seiner Längsachse verschiebbar und die optische Einrichtung fest positioniert ist.
- Vorrichtung nach einem der Ansprüche 17 bis 21, dadurch gekennzeichnet, daß zur Intensitätssteuerung der Strahlen Modulatoren (30) vorgesehen sind, die über die Datenfiles (D3 bis D5) wenigstens indirekt ansteuerbar sind.
- Vorrichtung nach Anspruch 22, dadurch gekennzeichnet, daß ein jeweiliger Modulator (30a bis 30c) mit wenigstens einem Analogschalter verbunden ist, über den dem Modulator eine Steuerspannung zuführbar ist, und daß der Analogschalter durch das Datenfile (D3 bis D5) schaltbar ist.
- Vorrichtung nach Anspruch 23, dadurch gekennzeichnet, daß mehrere Modulatoren (30a bis 30c) vorhanden sind, denen jeweils ein Analogschalter zugeordnet ist, die jeweils durch eines der zum Gravieren entlang einer Spur benötigten mehreren Datenfiles (D3 bis D5) schaltbar sind, und daß die Analogschalter jeweils unterschiedliche Steuerspannungen schalten (Figuren 6,7).
- Vorrichtung nach einem der Ansprüche 22 bis 24, dadurch gekennzeichnet, daß die Modulatoren (30a bis 30c) akustooptische Modulatoren sind.
- Vorrichtung nach einem der Ansprüche 22 bis 24, dadurch gekennzeichnet, daß die Modulatoren Deflektoren oder Strahlablenker sind.
- Vorrichtung nach einem der Ansprüche 17 bis 26, dadurch gekennzeichnet, daß die Strahlen fokussierte Strahlen sind.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50104541T DE50104541D1 (de) | 2001-05-25 | 2001-05-25 | Verfahren und Vorrichtung zur Herstellung einer Druckform |
ES01112705T ES2233522T3 (es) | 2001-05-25 | 2001-05-25 | Procedimiento y dispositivo para la fabricacion de un molde. |
EP01112705A EP1262315B8 (de) | 2001-05-25 | 2001-05-25 | Verfahren und Vorrichtung zur Herstellung einer Druckform |
AT01112705T ATE282526T1 (de) | 2001-05-25 | 2001-05-25 | Verfahren und vorrichtung zur herstellung einer druckform |
JP2002148852A JP3556204B2 (ja) | 2001-05-25 | 2002-05-23 | 印刷ブロックを製造する方法及び装置 |
CNB02120473XA CN1208190C (zh) | 2001-05-25 | 2002-05-24 | 用于生成一个印版的方法和设备 |
US10/154,837 US6857365B2 (en) | 2001-05-25 | 2002-05-28 | Method and device for producing a printing block |
HK03104677.9A HK1052320B (zh) | 2001-05-25 | 2003-07-02 | 用於生成一個印版的方法和設備 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP01112705A EP1262315B8 (de) | 2001-05-25 | 2001-05-25 | Verfahren und Vorrichtung zur Herstellung einer Druckform |
Publications (3)
Publication Number | Publication Date |
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EP1262315A1 EP1262315A1 (de) | 2002-12-04 |
EP1262315B1 true EP1262315B1 (de) | 2004-11-17 |
EP1262315B8 EP1262315B8 (de) | 2005-01-05 |
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EP01112705A Expired - Lifetime EP1262315B8 (de) | 2001-05-25 | 2001-05-25 | Verfahren und Vorrichtung zur Herstellung einer Druckform |
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US (1) | US6857365B2 (de) |
EP (1) | EP1262315B8 (de) |
JP (1) | JP3556204B2 (de) |
CN (1) | CN1208190C (de) |
AT (1) | ATE282526T1 (de) |
DE (1) | DE50104541D1 (de) |
ES (1) | ES2233522T3 (de) |
HK (1) | HK1052320B (de) |
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-
2001
- 2001-05-25 AT AT01112705T patent/ATE282526T1/de active
- 2001-05-25 EP EP01112705A patent/EP1262315B8/de not_active Expired - Lifetime
- 2001-05-25 DE DE50104541T patent/DE50104541D1/de not_active Expired - Lifetime
- 2001-05-25 ES ES01112705T patent/ES2233522T3/es not_active Expired - Lifetime
-
2002
- 2002-05-23 JP JP2002148852A patent/JP3556204B2/ja not_active Expired - Fee Related
- 2002-05-24 CN CNB02120473XA patent/CN1208190C/zh not_active Expired - Fee Related
- 2002-05-28 US US10/154,837 patent/US6857365B2/en not_active Expired - Lifetime
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007015263A1 (de) * | 2007-03-27 | 2008-10-02 | Hell Gravure Systems Gmbh & Co. Kg | Hochdruckform, insbesondere Flexodruckform, und Verfahren zu ihrer Herstellung |
Also Published As
Publication number | Publication date |
---|---|
DE50104541D1 (de) | 2004-12-23 |
HK1052320B (zh) | 2005-12-09 |
EP1262315A1 (de) | 2002-12-04 |
CN1387996A (zh) | 2003-01-01 |
JP2003053928A (ja) | 2003-02-26 |
HK1052320A1 (en) | 2003-09-11 |
JP3556204B2 (ja) | 2004-08-18 |
CN1208190C (zh) | 2005-06-29 |
US20020195012A1 (en) | 2002-12-26 |
ATE282526T1 (de) | 2004-12-15 |
ES2233522T3 (es) | 2005-06-16 |
EP1262315B8 (de) | 2005-01-05 |
US6857365B2 (en) | 2005-02-22 |
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