EP1293740A2 - Bestrahlungsvorrichtung mit veränderlichem Spektrum - Google Patents
Bestrahlungsvorrichtung mit veränderlichem Spektrum Download PDFInfo
- Publication number
- EP1293740A2 EP1293740A2 EP02018547A EP02018547A EP1293740A2 EP 1293740 A2 EP1293740 A2 EP 1293740A2 EP 02018547 A EP02018547 A EP 02018547A EP 02018547 A EP02018547 A EP 02018547A EP 1293740 A2 EP1293740 A2 EP 1293740A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- radiation
- irradiation device
- spectrum
- radiation sources
- sources
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
Definitions
- the invention relates to an irradiation device for irradiation of objects with in particular ultraviolet electromagnetic Radiation, with a housing that is on the outlet to be irradiated aligned for which has electromagnetic radiation and at least two elongated radiation sources arranged in the housing for the electromagnetic radiation with a a prescribed operating temperature defined spectrum.
- UV light come in the photochemical influence of radiation objects for use. Important applications are the curing of printing inks, adhesives and coatings as well as sterilization and medical radiation. Depending on the application, different proportions of importance from the UV spectrum. Basically leaves the UV spectrum is in the UV-C (100-280nm), UV-B range Subdivide (280-315nm), UV-A (315-380nm) and UV-VIS (380-450nm).
- UV radiation sources especially gas discharge lamps used in which by the Evaporation of metallic additives creates a plasma.
- the lamps essentially consist of a tubular one Vitreous body, two electrodes, two metallic melts as well as two bases.
- In UV radiation technology have three radiation sources as standard established by the addition of mercury (Hg) or iron (Fe) or Gallium (Ga) have different spectra. Depending on the addition, the therefore differ Energy components in the UV-A, -B, -C and -VIS range of radiation sources.
- a UV irradiation device can only do that spectrum determined by the radiation source used radiate.
- a change in the power supply can only the total amount of energy supplied is increased or reduced, while distributing the energy over the wavelength changes only slightly.
- UV radiation devices with mercury (Hg) radiation sources mainly for curing Printing inks used.
- the very high energy radiation around 254 nm is well absorbed and hardened in thin layers of paint therefore effectively apply the paint.
- Layers such as adhesive layers are required the UV-A radiation around 365 nm or even the proportion of visible light generated with gallium (GA) radiation sources becomes.
- the spectrum of radiation sources in the Operation can change by up to 30%.
- changing the spectrum does not manifest itself as uniform decrease in intensity over the wavelength, but as an increased decrease in individual wavelength ranges.
- iron as a vaporising additive, this is uneven
- the decrease can be observed particularly clearly since the Iron penetrates into the wall of the vitreous body and thus the Evaporation process in the plasma is withdrawn.
- electrode material released, which also change the spectrum can.
- the invention is based on the object of an irradiation device to create their spectrum on the fly is changeable.
- the radiation device Can be used for various applications without waiting times be and an effective compensation for aging or manufacturing Changes and / or deviations of the Enable spectrum.
- This task is the beginning of an irradiation device mentioned type solved in that at least one Radiation source at least one of the other radiation sources has partly different spectrum and that the Power of at least one radiation source is variable.
- At least one radiation source is one of the others Radiation sources at least partially deviating spectrum has a mixed spectrum of the overlapping Spectra of the individual radiation sources created.
- Radiation sources at least partially deviating spectrum has a mixed spectrum of the overlapping Spectra of the individual radiation sources created.
- For radiation applications mostly a special one Wavelength range of electromagnetic radiation, in particular UV radiation, but also at the same time require small portions from a different wavelength range, it is expedient that, for example, two radiation sources a matching spectrum in the particular Have wavelength range and another radiation source the spectrum from the other wavelength range.
- the setting option for the performance of at least one Radiation source causes the spectrum to change with that Power operated radiation source, albeit in quite small, changes; at the same time changes to but also to a greater extent that of the radiation device radiated mixed spectrum, since the intensity at least one of the overlapping spectra changes.
- the reason for the small spectrum change due to change the power supplied to the radiation source is that when operating at a lower power, e.g. 40% of the maximum power, the evaporating metallic additives, e.g. Iron, condense in the gas discharge lamp. From that the additives significantly influences the radiated spectrum condensation of additives causes a change in the spectrum.
- a lower power e.g. 40% of the maximum power
- the evaporating metallic additives e.g. Iron
- all Radiation sources independently of one another with different Performance operable.
- the setting of each radiation source supplied power can be gradual or gradual between a minimum and a maximum power respectively.
- the radiation source is switched off at minimum power, while the maximum performance of the maximum Power of the radiation source corresponds.
- the irradiation device for irradiating objects with ultraviolet electromagnetic radiation When the irradiation device for irradiating objects with ultraviolet electromagnetic radiation is to come, it is necessary that the spectra of the radiation sources in the range of the wavelength of the electromagnetic Radiation from 100 nm - 450 nm at least partially differ from each other.
- Each radiation source can have separate control electronics be associated with either manual or collaborative with a control loop an automated control of the supplied power allowed.
- Automated control requires that the radiation device a spectral apparatus, in particular a Spectrometer, for measuring and monitoring the radiation device radiated electromagnetic Has radiation.
- an evaluation unit required an input for that from Spectral apparatus measured spectrum and an output to Changes in the performance of the individual radiation sources.
- the evaluation unit changes the performance depending on a target mixed spectrum of the radiation device radiated electromagnetic radiation.
- the performance of the individual radiation sources based on the spectrometer measurement manually.
- the electromagnetic radiation emitted by the radiation device Radiation can be emitted in the area of the outlet opening arranged optical fiber from the radiation device to the measuring head of the spectrometer become.
- each radiation source is a gas discharge lamp, and at least one radiation source as evaporating during operation Addition of mercury (HG), at least one radiation source as evaporating additive iron (FE) and at least one radiation source contains gallium (GA) as a vaporising additive, the three are mainly used in UV radiation technology spectra used with only one UV irradiation device generate as well as all of them resulting mixed spectra.
- the tubular radiation sources a diameter of 10 - 20 mm very close to each other, but without touching their outer surfaces. The distance between the outer surfaces is between 2 - 5 mm.
- the radiation sources are bundled in one imaginary circular cylinder whose diameter is the outside diameter the radiation source to be replaced of the conventional one Irradiation device corresponds.
- the radiated Total power of the bundled radiation sources corresponds to the radiated power of the one to be replaced Radiation source.
- the bundling of the radiation sources also increases the effective cooling surface of the radiation sources a conventional radiation source with the same emitted Performance because the entire shell surface of the tube bundle in the imaginary circular cylinder larger than the surface of one single pipe with the same outer diameter. Also the danger and the extent of undesirable deflections is reduced with the bundled radiation sources compared to a conventional, much larger radiation source same radiation power. Especially at Radiation sources that are longer than 1 m are exposed possible division of the total power required according to the invention noticeably noticeable on several radiation sources. The distribution of the total performance allows higher overall Performances of the radiation device without the conventional radiation sources with very large diameters associated disadvantages must be accepted.
- the Radiation sources of an irradiation device can all in only one holder, but also in groups in several Brackets are summarized.
- Figures 1a - 1d show tubular, elongated radiation sources (1) between a housing (2) between a reflector (3) and an object (4) to be irradiated are.
- the radiation sources (1) are in one through a dashed line indicated imaginary circular cylinder (5) arranged in a bundle, but without on their lateral surfaces to touch.
- the beam path (6) from the radiation sources (1) on the object (4) is shown schematically.
- the object (4) is drawn with the direction of movement (7) passed under the UV irradiation device.
- FIG. 2 shows a UV radiation device according to the invention according to Figure 1b) in a schematic side view.
- the radiation sources (1) summarized at the ends (8) in common brackets (9) are a simultaneous and therefore time-saving Allow replacement of the radiation sources (1).
- the control electronics (14, 15, 16) allow each radiation source (1) electrical power supplied between a minimum and to change a maximum value independently of each other.
- Figure 3 shows the further feature essential to the invention that at least one radiation source (1) one of the others Radiation sources (1) at least partially different spectrum having.
- the arrangements (17, 18, 19) relate to the Basic case that at least one radiation source is a different one Has spectrum, while the arrangements (21, 22, 23) concern cases in which at least 2 radiation sources one that is at least partially different from the other radiation sources Show spectrum.
- the radiation sources (1) shown in FIG. 3 are gas discharge lamps with different evaporating in operation Additives, namely mercury (Hg), iron (Fe) or Gallium (Ga). These additions are in the UV radiation technology standardized additives.
- Figure 4 shows the spectra of radiation sources with the standard additives mentioned at the prescribed operating temperature. By switching individual radiation sources on and off, ongoing operation of the UV radiation device between the Spectra can be changed according to Figure 4. Meanwhile, become individual or more radiation sources with one electrical Power operated between the minimum and maximum value, a large number of superimposed spectra can be generated Mixed spectra, as shown in Figures 5 and 6 are. The largest possible changes in the spectrum arise in those arrangements in which all Radiation sources have different additives, in particular in the arrangement (22, 23).
- each diagram according to FIG. 5 is on the X axis Wavelength plotted in nanometers while on the Y axis the relative intensity of the electromagnetic radiation is applied.
- the ones shown above the diagram Abbreviations denote the vaporizing additives in the radiation sources. All the diagrams show that prescribed operating temperature and maximum output of mixed spectrum emitted by the irradiation device.
- a universal UV irradiation device can be a combination of the radiation sources, as in Figure 5a shown, are used.
- the mixed spectrum shown contains all the parts used in UV radiation technology required are.
- FIG. 5b shows a mixed spectrum with an emphasis on the intensity in the wavelength range around 360 nanometers.
- a combination the radiation sources as they are for a spectrum Figure 5b is required, especially during curing of adhesives used. By switching off the Power supply of one of the Fe radiation sources can do that Mixed spectrum during operation into that shown in Figure 5a Mixed spectrum can be transferred.
- FIG. 5c shows a mixed spectrum that is used in particular for coating of wooden surfaces with varnishes is suitable.
- Figure 5d shows a mixed spectrum for curing printing inks.
- FIG. 6 shows the division of the mixed spectrum according to FIG. 5 a) in the individual spectra of radiation sources according to the arrangement (23) according to Figure 3 each at operating temperature and Peak performance.
- the adjustment range is with item number (24) the Ga radiation source, with position (25) the adjustment range the Fe radiation source and with position (26) denotes the adjustment range of the mercury radiation source.
- Each wavelength range can be controlled by controlling the Power of the respective radiation source the intensity within the adjustment range marked with (24, 25) and (26) change.
- FIG. 7 shows schematically a control arrangement for the emitted Mixed spectrum.
- the UV irradiation device has additionally a sensor (28), which the Electromagnetic radiation detected, a spectrometer (29) for measuring the spectrum of the emitted electromagnetic Radiation and an evaluation unit (31) with a Input for the spectrum measured by the spectrometer (29) and an output that is connected to the control electronics (14, 15, 16) connected to the power setting of the radiation sources (1) is.
- the light emitted by the UV irradiation device is detected by the sensor (28) and in the spectrometer (29) performed and measured there.
- the evaluation unit (31) the measured spectrum with a required by the user target spectrum entered in the evaluation unit for the of electromagnetic radiation emitted by the radiation device Compared radiation. If there is a rule deviation, then the performance of the control electronics (14, 15, 16) individual radiation sources. Only when, as in Figure 7 indicated, the target and the actual spectrum match is a controlled and safe UV curing process guaranteed.
- Monitoring by means of the sensor (28) can either be continuous or only at certain intervals respectively. For this purpose, the sensor (28) is in the range of Light exit opening (34) of the irradiation device bring.
- the senor on the spectrometer and the light through an optical fiber in the Coupling the sensor.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Description
- Fig. 1 a-d
- vier Vorderansichten erfindungsgemäßer UV-Bestrahlungsvorrichtungen in schematischer Darstellung,
- Fig. 2
- eine Seitenansicht eines bevorzugten Ausführungsbeispiels einer erfindungsgemäßen UV-Bestrahlungsvorrichtung,
- Fig. 3
- Anordnungsvarianten von Strahlungsquellen in einer erfindungsgemäßen UV-Bestrahlungsvorrichtung,
- Fig. 4
- Spektren von Gasentladungslampen für die UV-Bestrahlung,
- Fig. 5 a-d
- von erfindungsgemäßen Bestrahlungsvorrichtungen abgestrahlte Mischspektren,
- Fig. 6
- eine Veranschaulichung der Änderungsmöglichkeiten des Mischspektrums nach Figur 5 a sowie
- Fig. 7
- eine erfindungsgemäße UV-Bestrahlungsvorrichtung mit einer Leistungsregelung für jede Strahlungsquelle in schematischer Darstellung.
| Nr. | Bezeichnung | Nr. | Bezeichnung |
| 1. | Strahlungsquelle | 18. | Anordnung Strahlenquelle |
| 2. | Gehäuse | 19. | Anordnung Strahlenquelle |
| 3. | Reflektor | 20. | - |
| 4. | Objekt | 21. | Anordnung Strahlenquelle |
| 5. | Kreiszylinder | 22. | Anordnung Strahlenquelle |
| 6. | Strahlengang | 23. | Anordnung Strahlenquelle |
| 7. | Bewegungsrichtung | 24. | Regelbereich Ga |
| 8. | Enden | 25. | Regelbereich Fe |
| 9. | Halterung | 26. | Regelbereich Hg |
| 10. | - | 27. | - |
| 11. | Leitungen | 28. | Sensor |
| 12. | Leitungen | 29. | Spektrometer |
| 13. | Leitungen | 30. | - |
| 14. | Steuerelektronik | 31. | Auswerteeinheit |
| 15. | Steuerelektronik | 32. | - |
| 16. | Steuerelektronik | 33. | - |
| 17. | Anordnung Strahlenquelle | 34. | Lichtaustrittsöffnung |
Claims (13)
- Bestrahlungsvorrichtung zur Bestrahlung von Objekten mit insbesondere ultravioletter elektromagnetischer Strahlung, mit einem Gehäuse, das eine auf das zu bestrahlende Objekt ausgerichtete Austrittsöffnung für die elektromagnetische Strahlung aufweist sowie mindestens zwei in dem Gehäuse angeordneten langgestreckten Strahlungsquellen für die elektromagnetische Strahlung mit einem bei einer vorgeschriebenen Betriebstemperatur definierten Spektrum, dadurch gekennzeichnet, dass wenigstens eine Strahlungsquelle (1) ein von den übrigen Strahlungsquellen (1) zumindest teilweise abweichendes Spektrum aufweist und dass die Leistung wenigstens einer Strahlungsquelle (1) veränderlich ist.
- Bestrahlungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Spektrum im Bereich der Wellenlänge der elektromagnetischen Strahlung von 100nm - 450 nm abweicht.
- Bestrahlungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sämtliche Strahlungsquellen (1) ein von den übrigen Strahlungsquellen zumindest teilweise abweichendes Spektrum aufweisen.
- Bestrahlungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Strahlungsquellen (1) unabhängig voneinander mit unterschiedlicher Leistung betreibbar sind
- Bestrahlungsvorrichtung nach einem oder mehreren der Ansprüche 1-3, dadurch gekennzeichnet, dass jeder Strahlungsquelle (1) eine Steuerelektronik (14, 15, 16) zugeordnet ist.
- Bestrahlungsvorrichtung einem oder mehreren der Ansprüche 1-4, dadurch gekennzeichnet, dass sie einen Spektralapparat (29) zur Messung des Spektrums der von der Bestrahlungsvorrichtung (27) abgestrahlten elektromagnetischen Strahlung aufweist.
- Bestrahlungsvorrichtung nach Anspruch 6, gekennzeichnet durch eine Auswerteeinheit (31) mit einem Eingang für das vom Spektralapparat (29) gemessene Spektrum sowie einem Ausgang zur Veränderung der Leistung der einzelnen Strahlungsquellen (1) in Abhängigkeit eines Soll-Spektrums für die von der Bestrahlungsvorrichtung abgestrahlte elektromagnetische Strahlung.
- Bestrahlungsvorrichtung nach einem oder mehreren der Ansprüche 1-6, dadurch gekennzeichnet, dass jede Strahlungsquelle eine Gasentladungslampe ist, die einen im Betrieb verdampfenden Zusatz (Hg, Fe, Ga) enthält.
- Bestrahlungsvorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass der Zusatz Quecksilber (Hg) oder Eisen (Fe) oder Gallium (Ga) ist.
- Bestrahlungsvorrichtung nach einem oder mehreren der Ansprüche 1-9, dadurch gekennzeichnet, dass die Längsachsen sämtlicher Strahlungsquellen (1) parallel verlaufen.
- Bestrahlungsvorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass der Abstand zwischen sämtlichen Längsachsen übereinstimmt.
- Bestrahlungsvorrichtung nach einem oder mehreren der Ansprüche 1-11, dadurch gekennzeichnet, dass die Strahlungsquellen (1) gebündelt (5)angeordnet sind, ohne sich jedoch an ihren Mantelflächen zu berühren.
- Bestrahlungsvorrichtung nach einem oder mehreren der Ansprüche 1-12, dadurch gekennzeichnet, dass mehrere Strahlungsquellen (1) in einer gemeinsamen Halterung (9) zusammengefasst sind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10145648 | 2001-09-15 | ||
| DE2001145648 DE10145648B4 (de) | 2001-09-15 | 2001-09-15 | Bestrahlungsvorrichtung mit veränderlichem Spektrum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1293740A2 true EP1293740A2 (de) | 2003-03-19 |
| EP1293740A3 EP1293740A3 (de) | 2005-08-17 |
Family
ID=7699235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02018547A Withdrawn EP1293740A3 (de) | 2001-09-15 | 2002-08-17 | Bestrahlungsvorrichtung mit veränderlichem Spektrum |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1293740A3 (de) |
| DE (1) | DE10145648B4 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007001970A1 (en) * | 2005-06-28 | 2007-01-04 | Eastman Kodak Company | Uv cure equipment with combined light path |
| DE102008023727A1 (de) * | 2008-05-15 | 2009-12-10 | Koenig & Bauer Aktiengesellschaft | Bogenverarbeitende Maschine, insbesondere Bogendruckmaschine, enthaltend eine Trocknungsvorrichtung zur Erzeugung von Trocknungsstrahlung mit zugeordnetem Sensorsystem und Verfahren zur Trocknerregelung |
| WO2008072154A3 (en) * | 2006-12-11 | 2011-05-05 | Koninklijke Philips Electronics N.V. | Lightng device |
| US10267563B2 (en) | 2008-12-19 | 2019-04-23 | Excelitas Canada, Inc. | System, method, and adjustable lamp head assembly, for ultra-fast UV curing |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007008964A1 (de) | 2007-02-21 | 2008-09-04 | Ssr Engineering Gmbh | UV-Bestrahlungsvorrichtung |
| DE102009048831B4 (de) * | 2009-10-09 | 2011-07-21 | Osram Gesellschaft mit beschränkter Haftung, 81543 | Verfahren zum Betreiben von Hochdruckentladungslampen |
| DE102011109386B3 (de) * | 2011-08-04 | 2013-01-17 | Heraeus Noblelight Gmbh | Vorrichtung zum Aushärten von Beschichtungen oder Kunststofflinern auf der Innenwandung langgestreckter Hohlräume |
| DE102013105959B4 (de) | 2013-06-07 | 2019-06-19 | Heraeus Noblelight Gmbh | Betriebsverfahren und Vorrichtung zur Bestrahlung eines Substrats |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3320597C2 (de) * | 1983-06-08 | 1986-11-27 | W.C. Heraeus Gmbh, 6450 Hanau | Hochdruck-Gasentladungslampe |
| CH677292A5 (de) * | 1989-02-27 | 1991-04-30 | Asea Brown Boveri | |
| CH677557A5 (de) * | 1989-03-29 | 1991-05-31 | Asea Brown Boveri | |
| FR2653867B1 (fr) * | 1989-10-31 | 1992-08-21 | France Rayonnement | Ensemble de sechage par u.v. a plusieurs emetteurs. |
| DE9002266U1 (de) * | 1990-02-26 | 1990-07-12 | Dr. K. Hönle GmbH, 8033 Martinsried | Vorrichtung zur Konstanthaltung der Lichtintensität |
| CH680099A5 (de) * | 1990-05-22 | 1992-06-15 | Asea Brown Boveri | |
| CA2066604A1 (en) * | 1990-07-18 | 1992-01-19 | Koichi Hayashi | Variable color lamp |
| DE9100816U1 (de) * | 1991-01-24 | 1991-04-11 | Dr. K. Hönle GmbH, 8033 Martinsried | Bestrahlungsvorrichtung zur Sonnensimulation |
| DE4430300C1 (de) * | 1994-08-26 | 1995-12-21 | Abb Research Ltd | Excimerstrahler und dessen Verwendung |
| US6015759A (en) * | 1997-12-08 | 2000-01-18 | Quester Technology, Inc. | Surface modification of semiconductors using electromagnetic radiation |
-
2001
- 2001-09-15 DE DE2001145648 patent/DE10145648B4/de not_active Expired - Fee Related
-
2002
- 2002-08-17 EP EP02018547A patent/EP1293740A3/de not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007001970A1 (en) * | 2005-06-28 | 2007-01-04 | Eastman Kodak Company | Uv cure equipment with combined light path |
| US7638780B2 (en) | 2005-06-28 | 2009-12-29 | Eastman Kodak Company | UV cure equipment with combined light path |
| WO2008072154A3 (en) * | 2006-12-11 | 2011-05-05 | Koninklijke Philips Electronics N.V. | Lightng device |
| DE102008023727A1 (de) * | 2008-05-15 | 2009-12-10 | Koenig & Bauer Aktiengesellschaft | Bogenverarbeitende Maschine, insbesondere Bogendruckmaschine, enthaltend eine Trocknungsvorrichtung zur Erzeugung von Trocknungsstrahlung mit zugeordnetem Sensorsystem und Verfahren zur Trocknerregelung |
| DE102008023727B4 (de) * | 2008-05-15 | 2017-11-16 | Koenig & Bauer Ag | Bogenverarbeitende Maschine enthaltend mindestens einen Trocknungsstrahler und Verfahren zur Steuerung oder Regelung eines Trocknungsstrahlers |
| US10267563B2 (en) | 2008-12-19 | 2019-04-23 | Excelitas Canada, Inc. | System, method, and adjustable lamp head assembly, for ultra-fast UV curing |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1293740A3 (de) | 2005-08-17 |
| DE10145648B4 (de) | 2006-08-24 |
| DE10145648A1 (de) | 2003-04-10 |
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