EP1699590A1 - Method for producing a graphical element on a metal-coated moulded body by point laser irradiation - Google Patents
Method for producing a graphical element on a metal-coated moulded body by point laser irradiationInfo
- Publication number
- EP1699590A1 EP1699590A1 EP04797632A EP04797632A EP1699590A1 EP 1699590 A1 EP1699590 A1 EP 1699590A1 EP 04797632 A EP04797632 A EP 04797632A EP 04797632 A EP04797632 A EP 04797632A EP 1699590 A1 EP1699590 A1 EP 1699590A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- points
- generated
- producing
- coating
- laser radiation
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/24—Ablative recording, e.g. by burning marks; Spark recording
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/361—Removing material for deburring or mechanical trimming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/007—Marks, e.g. trade marks
Definitions
- the invention relates to a method for producing a linear graphic element on a shaped body.
- the molded body can be, for example, operating, decorative or display elements which are used for a wide variety of purposes.
- the line-shaped graphic element can be a line, a straight line or also a closed figure, for example a rectangle. With this figure, a design acting as a border of a letter can also be achieved and thus a letter can be visually represented.
- DE 42 12423 C2 discloses a method for producing operating, decorative or display elements, in which an opaque layer which is applied to a base body is removed by means of laser radiation in order to generate a symbol. The layer is completely removed. There are areas on the base body that can be clearly distinguished from one another with or without a coating. The laser is only used as a tool 20 with which the coating is removed quickly and completely. Since the processing time is shorter the faster the coating is removed, the specification of a short processing time requires energy-intensive processing of the coating and thus the risk of damage to the base body. This results in a non-uniform visual impression of the symbol.
- the molded body is coated directly with metal. There is no need for any intermediate layer between the molded body and the coating, as provided in DE 42 12423 C2.
- the graphic element is generated by laser radiation, which removes the coating in a pixel shape. Only points are deducted. The energy required for this and thus the risk of damage to the base body is extremely low. If the mutual distance between the dots is the same and the dots have the same diameter, there is a uniform visual impression of the graphic element under all lighting conditions and, as a result, it is particularly easy to recognize and read.
- the diameter of the individual point created and its distance from the next point can be varied within wide limits. A particularly good visual impression is obtained if the individual points cannot be distinguished by the human eye at a normal reading distance of approximately 30 cm.
- a surface impression can also be generated with the method according to the invention.
- the points created with laser radiation are arranged in the form of a surface and at the same mutual distance.
- This variant of the method according to the invention is similar to newspaper printing, in which a surface impression is likewise obtained by a dense and uniform arrangement of printing pixels.
- It can also be used to produce areas of different brightness by changing the packing density of the generated points.
- the molded body is made of transparent material and is opened the side facing away from the coating is illuminated.
- a special color effect can e.g. This can be achieved, for example, by the shaped body having a special color and being illuminated with colorless light, or when it is colorless itself and the lighting is in the desired color.
- a colored effect also arises if the plastic material of the molded body is processed equally in every point when the coating is removed. Depending on the intensity of the radiation, there is a bronze effect of the graphic element due to the release of individual carbon atoms, which can be seen in reflected light and transmitted light.
- This bronze effect is in its intensity, i.e. the degree of browning in connection with the degree of reflection in reflected light, variable and depending on the intensity of the laser radiation.
- the coating is removed in a punctiform manner.
- there is an adjustable matting of the surface Depending on the density and size of the dots, there is an adjustable matting of the surface.
- the coating of the molded body is made of silver metallic gloss, the graphic element appears darker in incident light, but brighter in transmitted light than the other molded body. This results in further and diverse optical design options.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
The invention relates to a method for producing a linear, graphical element on a moulded body. According to said method, the moulded body is metal-coated and the graphical element is produced by laser irradiation, by removing the coating by points having the same diameter and located at regular intervals.
Description
VERFAHREN ZUR HERSTELLUNG EINES GRAFISCHEN ELEMENTS AUF EINEM METALLISCH BESCHICHTETEN FORMKÖRPER DURCH PUNKTLICHE LASERBESTRAHLUNGMETHOD FOR PRODUCING A GRAPHIC ELEMENT ON A METALLICALLY COATED MOLDED BODY BY POINT LASER RADIATION
Die Erfindung betrifft ein Verfahren zur Herstellung eines linienförmigen grafischen 5 Elements auf einem Formkörper.The invention relates to a method for producing a linear graphic element on a shaped body.
Bei dem Formkörper kann es sich beispielsweise um Bedien-, Dekor- oder Anzeigeelemente handeln, die für verschiedenste Zwecke eingesetzt werden. Das linienför- mige grafische Element kann ein Strich, eine Gerade oder auch eine in sich ge- 10 schlossene Figur, beispielsweise ein Rechteck sein. Durch diese Figur kann auch eine als Umrandung eines Buchstabens wirkende Gestaltung erreicht und damit optisch ein Buchstabe dargestellt werden.The molded body can be, for example, operating, decorative or display elements which are used for a wide variety of purposes. The line-shaped graphic element can be a line, a straight line or also a closed figure, for example a rectangle. With this figure, a design acting as a border of a letter can also be achieved and thus a letter can be visually represented.
In diesem Zusammenhang ist aus der DE 42 12423 C2 ein Verfahren zur Herstel- 15 lung von Bedien-, Dekor- oder Anzeigeelementen bekannt, bei dem eine lichtundurchlässige Schicht, die auf einem Grundkörper aufgebracht ist, mittels Laserstrahlung zur Erzeugung eines Symbols entfernt wird. Die Schicht wird dabei vollständig abgetragen. Auf dem Grundkörper gibt es optisch klar voneinander unterscheidbare Bereiche mit oder ohne Beschichtung. Der Laser wird dabei lediglich als Werkzeug 20 eingesetzt, mit dem die Beschichtung schnell und vollständig entfernt wird. Da die Bearbeitungszeit umso kleiner ist, je schneller die Abtragung der Beschichtung erfolgt, erfordert die Vorgabe einer kleinen Bearbeitungszeit eine energieintensive Bearbeitung der Beschichtung und damit die Gefahr einer Beschädigung des Grundkörpers. Daraus resultiert ein ungleichförmiger optischer Eindruck des Sym- 25 bols.In this context, DE 42 12423 C2 discloses a method for producing operating, decorative or display elements, in which an opaque layer which is applied to a base body is removed by means of laser radiation in order to generate a symbol. The layer is completely removed. There are areas on the base body that can be clearly distinguished from one another with or without a coating. The laser is only used as a tool 20 with which the coating is removed quickly and completely. Since the processing time is shorter the faster the coating is removed, the specification of a short processing time requires energy-intensive processing of the coating and thus the risk of damage to the base body. This results in a non-uniform visual impression of the symbol.
Dieser schlechte optische Eindruck wird noch verstärkt, wenn das grafische auch unter ungünstigeren Lichtverhältnissen, insbesondere bei Dunkelheit, erkennbar sein soll. Der Fachmann kennt diese Gestaltung bei Bedienelementen unter dem 30 Namen "Nachtdesign". Hierzu ist es aus der DE 42 12 423 C2 bekannt, den Grundkörper mit einer Lichtquelle zu hinterleuchten, so dass Licht durch die beschich- tungsfreien Stellen austreten kann. Beschädigungen des Grundkörpers in diesen Bereichen wirken optisch wie eine Verschmutzung.
Es ist Aufgabe der Erfindung, das oben beschriebene Verfahren so zu verbessern, dass das grafische Element ein gleichmäßiges Aussehen auch bei verschiedenen Beleuchtungsverhältnissen besitzt und eine schnelle und prozesssichere Herstellung erlaubt.This poor visual impression is reinforced if the graphic is to be recognizable even under less favorable lighting conditions, especially in the dark. The person skilled in the art knows this design for operating elements under the name "night design". For this purpose, it is known from DE 42 12 423 C2 to backlight the base body with a light source so that light can escape through the coating-free points. Damage to the base body in these areas looks like dirt. It is an object of the invention to improve the method described above in such a way that the graphic element has a uniform appearance even under different lighting conditions and permits rapid and reliable production.
Die Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst.The object is achieved by the features of patent claim 1.
Der Formkörper wird direkt metallisch beschichtet. Eine irgendwie geartete Zwischenschicht zwischen Formkörper und Beschichtung, wie bei der DE 42 12423 C2 vorgesehen, ist entbehrlich. Das grafische Element wird durch eine Laserbestrahlung erzeugt, die die Beschichtung pixelförmig abträgt. Es werden immer nur Punkte abgetragen. Die dafür notwendige Energie und damit die Gefahr einer Beschädigung des Grundkörpers ist äußerst gering. Ist der gegenseitige Abstand der Punkte gleich und besitzen die Punkte den gleichen Durchmesser, ergibt sich unter allen Beleuchtungsverhältnissen ein gleichmäßiger optischer Eindruck des grafischen Elements und daraus resultierend eine besonders gute Erkenn- und Ablesbarkeit.The molded body is coated directly with metal. There is no need for any intermediate layer between the molded body and the coating, as provided in DE 42 12423 C2. The graphic element is generated by laser radiation, which removes the coating in a pixel shape. Only points are deducted. The energy required for this and thus the risk of damage to the base body is extremely low. If the mutual distance between the dots is the same and the dots have the same diameter, there is a uniform visual impression of the graphic element under all lighting conditions and, as a result, it is particularly easy to recognize and read.
Der Durchmesser des einzelnen erzeugten Punktes und sein Abstand zum nächsten Punkt ist in weiten Grenzen variierbar. Ein besonders guter optischer Eindruck ergibt sich, wenn die einzelnen Punkte mit dem menschlichen Auge im normalen Leseabstand von etwa 30 cm nicht unterscheidbar sind.The diameter of the individual point created and its distance from the next point can be varied within wide limits. A particularly good visual impression is obtained if the individual points cannot be distinguished by the human eye at a normal reading distance of approximately 30 cm.
Mit dem erfindungsgemäßen Verfahren lässt sich auch ein Flächeneindruck erzeugen. Hierzu werden die mit Laserbestrahlung erzeugten Punkte flächenförmig und mit gleichem gegenseitigen Abstand angeordnet. Diese Variante des erfindungsgemäßen Verfahrens hat Ähnlichkeit mit dem Zeitungsdruck, bei dem ebenfalls ein Flächeneindruck durch eine dichte und gleichmäßige Anordnung von Druckpixeln gewonnen wird.A surface impression can also be generated with the method according to the invention. For this purpose, the points created with laser radiation are arranged in the form of a surface and at the same mutual distance. This variant of the method according to the invention is similar to newspaper printing, in which a surface impression is likewise obtained by a dense and uniform arrangement of printing pixels.
Es lassen sich damit auch Flächen unterschiedlicher Helligkeit durch Ändern der Packungsdichte der erzeugten Punkte produzieren.It can also be used to produce areas of different brightness by changing the packing density of the generated points.
Ähnlich der DE 42 12 423 C2 ist es auch möglich, die grafischen Elemente zu hinterleuchten. Hierzu besteht der Formkörper aus transparentem Material und wird auf
der der Beschichtung abgewandten Seite beleuchtet. Ein besonderer farblicher Effekt lässt sich z. B. dadurch erzielen, dass der Formkörper die besondere Einfär- bung besitzt und mit farblosem Licht durchleuchtet wird oder aber wenn er selbst farblos ist und die Beleuchtung in der gewünschten Farbe erfolgt. Ein farbiger Effekt entsteht auch, wenn das Kunststoffmaterial des Formkörpers beim Abtragen der Beschichtung in jedem Punkt gleich bearbeitet wird. Je nach der Intensität der Bestrahlung kommt es, bedingt durch die Freisetzung von einzelnen Kohlenstoffatomen zu einem Bronze-Effekt des grafischen Elements, der im Auflicht und im Durchlicht erkennbar ist.Similar to DE 42 12 423 C2, it is also possible to backlight the graphic elements. For this purpose, the molded body is made of transparent material and is opened the side facing away from the coating is illuminated. A special color effect can e.g. This can be achieved, for example, by the shaped body having a special color and being illuminated with colorless light, or when it is colorless itself and the lighting is in the desired color. A colored effect also arises if the plastic material of the molded body is processed equally in every point when the coating is removed. Depending on the intensity of the radiation, there is a bronze effect of the graphic element due to the release of individual carbon atoms, which can be seen in reflected light and transmitted light.
Dieser Bronze-Effekt ist in seiner Intensität, d.h. dem Bräunungsgrad in Verbindung mit dem Reflexionsgrad bei Auflicht, variabel und abhängig von der Intensität der Laserbestrahlung. Einerseits wird dadurch die Beschichtung punktförmig abgetragen. Je nach Dichte und Größe der Punkte ergibt sich eine einstellbare Mattierung der Oberfläche. Abhängig von der Intensität der Bestrahlung ergibt sich zudem ein variabler Bräunungseffekt.This bronze effect is in its intensity, i.e. the degree of browning in connection with the degree of reflection in reflected light, variable and depending on the intensity of the laser radiation. On the one hand, the coating is removed in a punctiform manner. Depending on the density and size of the dots, there is an adjustable matting of the surface. Depending on the intensity of the radiation, there is also a variable tanning effect.
Bei einem farblosen Formkörper lassen sich durch unterschiedlich farbige Beleuchtungen farbig unterschiedliche Symbole, Buchstaben usw. erzielen. Wählt man das Material des Formkörpers durchsichtig, milchig trüb oder opak, lassen sich in Verbindung mit der Anordnung und Ausgestaltung der Bearbeitungspunkte verschiedenste optische Effekte erzielen.In the case of a colorless shaped body, different colored symbols, letters, etc. can be achieved by means of differently colored lighting. If one chooses the material of the molded body as transparent, milky cloudy or opaque, various optical effects can be achieved in connection with the arrangement and design of the processing points.
Wird die Beschichtung des Formkörpers silbermetallisch glänzend ausgeführt, wirkt das grafische Element bei Auflicht dunkler, bei Durchlicht jedoch heller als der übrige Formkörper. Dadurch ergeben sich weitere und vielfältige optische Gestaltungsmöglichkeiten.
If the coating of the molded body is made of silver metallic gloss, the graphic element appears darker in incident light, but brighter in transmitted light than the other molded body. This results in further and diverse optical design options.
Claims
1. Verfahren zur Herstellung eines linienförmigen grafischen Elements auf ei- nem Formkörper, dadurch gekennzeichnet, dass der Formkörper metallisch beschichtet wird und dass das grafische Element durch eine Laserbestrahlung erzeugt wird, durch die die Beschichtung in Form von Punkten abgetragen wird.1. A method for producing a linear graphic element on a shaped body, characterized in that the shaped body is coated with metal and that the graphic element is generated by laser radiation, by means of which the coating is removed in the form of dots.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Punkte mit gleichem Durchmesser und/oder gleichem gegenseitigen Abstand erzeugt werden.2. The method according to claim 1, characterized in that the points are generated with the same diameter and / or the same mutual distance.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Laserbestrahlung so vorgenommen wird, dass der einzelne erzeugte Punkt und sein Abstand zum nächsten Punkt mit dem menschlichen Auge im normalen Leseabstand nicht wahrnehmbar ist.3. The method according to claim 1 or 2, characterized in that the laser irradiation is carried out so that the individually generated point and its distance to the next point is imperceptible to the human eye at the normal reading distance.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zum Erzeugen eines Flächeneindrucks die mit Laserbestrahlung erzeugten Punkte flächenförmig und mit gleichem gegenseitigen Abstand angeordnet werden.4. The method according to any one of claims 1 to 3, characterized in that for generating a surface impression, the points generated with laser radiation are arranged in the form of a surface and at the same mutual distance.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass zum Erzeugen von Flächen unterschiedlicher Helligkeit die Packungsdichte der erzeugten Punkte geändert wird.5. The method according to any one of claims 1 to 4, characterized in that the packing density of the generated points is changed to generate areas of different brightness.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass abhängig von der Intensität der Laserbestrahlung und/oder der Dichte und und/oder der Größe der Bestrahlungspunkte ein Mattierungseffekt der Oberfläche und/oder ein Bräunungseffekt variabel eingestellt wird. Verfahren zur Herstellung eines hinterleuchtbaren Elements nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Formkörper aus transparentem Material besteht und auf der der Beschichtung abgewandten Seite beleuchtet wird. 6. The method according to any one of claims 1 to 5, characterized in that a matting effect of the surface and / or a browning effect is variably set depending on the intensity of the laser radiation and / or the density and / or the size of the irradiation points. Method for producing a back-illuminable element according to one of claims 1 to 6, characterized in that the molded body consists of transparent material and is illuminated on the side facing away from the coating.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10358313.0A DE10358313B4 (en) | 2003-12-11 | 2003-12-11 | Method for producing a graphic element |
PCT/EP2004/012511 WO2005061170A1 (en) | 2003-12-11 | 2004-11-05 | Method for producing a graphical element on a metal-coated moulded body by point laser irradiation |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1699590A1 true EP1699590A1 (en) | 2006-09-13 |
Family
ID=34683339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04797632A Withdrawn EP1699590A1 (en) | 2003-12-11 | 2004-11-05 | Method for producing a graphical element on a metal-coated moulded body by point laser irradiation |
Country Status (6)
Country | Link |
---|---|
US (1) | US7649154B2 (en) |
EP (1) | EP1699590A1 (en) |
JP (1) | JP2007513804A (en) |
CN (1) | CN1890050A (en) |
DE (1) | DE10358313B4 (en) |
WO (1) | WO2005061170A1 (en) |
Families Citing this family (2)
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US8585956B1 (en) | 2009-10-23 | 2013-11-19 | Therma-Tru, Inc. | Systems and methods for laser marking work pieces |
DE102015208560A1 (en) | 2015-05-08 | 2016-11-10 | Bayerische Motoren Werke Aktiengesellschaft | Method and device for individualizing interior and / or exterior components of a motor vehicle by means of a labeling laser |
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-
2003
- 2003-12-11 DE DE10358313.0A patent/DE10358313B4/en not_active Expired - Lifetime
-
2004
- 2004-11-05 JP JP2006543392A patent/JP2007513804A/en active Pending
- 2004-11-05 EP EP04797632A patent/EP1699590A1/en not_active Withdrawn
- 2004-11-05 WO PCT/EP2004/012511 patent/WO2005061170A1/en active Application Filing
- 2004-11-05 CN CNA2004800366224A patent/CN1890050A/en active Pending
-
2006
- 2006-06-12 US US11/450,438 patent/US7649154B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2005061170A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7649154B2 (en) | 2010-01-19 |
DE10358313A1 (en) | 2005-07-21 |
WO2005061170A1 (en) | 2005-07-07 |
CN1890050A (en) | 2007-01-03 |
DE10358313B4 (en) | 2015-10-22 |
US20060286307A1 (en) | 2006-12-21 |
JP2007513804A (en) | 2007-05-31 |
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