EP1610956A1 - Verfahren zur erzeugung einer information, trägerkörper, in dem die information erzeugt wird, sowie verwendung eines derartigen trägerkörpers - Google Patents
Verfahren zur erzeugung einer information, trägerkörper, in dem die information erzeugt wird, sowie verwendung eines derartigen trägerkörpersInfo
- Publication number
- EP1610956A1 EP1610956A1 EP04723548A EP04723548A EP1610956A1 EP 1610956 A1 EP1610956 A1 EP 1610956A1 EP 04723548 A EP04723548 A EP 04723548A EP 04723548 A EP04723548 A EP 04723548A EP 1610956 A1 EP1610956 A1 EP 1610956A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier body
- starting materials
- color
- reaction
- laser
- 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.)
- Granted
Links
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- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 36
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- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 8
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- MCSXGCZMEPXKIW-UHFFFAOYSA-N 3-hydroxy-4-[(4-methyl-2-nitrophenyl)diazenyl]-N-(3-nitrophenyl)naphthalene-2-carboxamide Chemical compound Cc1ccc(N=Nc2c(O)c(cc3ccccc23)C(=O)Nc2cccc(c2)[N+]([O-])=O)c(c1)[N+]([O-])=O MCSXGCZMEPXKIW-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
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- 230000008901 benefit Effects 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
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- 230000003197 catalytic effect Effects 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 208000012839 conversion disease Diseases 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 2
- 208000018459 dissociative disease Diseases 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- LBSANEJBGMCTBH-UHFFFAOYSA-N manganate Chemical compound [O-][Mn]([O-])(=O)=O LBSANEJBGMCTBH-UHFFFAOYSA-N 0.000 description 2
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- QLOKJRIVRGCVIM-UHFFFAOYSA-N 1-[(4-methylsulfanylphenyl)methyl]piperazine Chemical compound C1=CC(SC)=CC=C1CN1CCNCC1 QLOKJRIVRGCVIM-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910002515 CoAl Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- HSSJULAPNNGXFW-UHFFFAOYSA-N [Co].[Zn] Chemical compound [Co].[Zn] HSSJULAPNNGXFW-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- VPONMBLTGNYMND-UHFFFAOYSA-N azane copper(1+) Chemical compound N.N.N.N.[Cu+] VPONMBLTGNYMND-UHFFFAOYSA-N 0.000 description 1
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- 239000003245 coal Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
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- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
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- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 1
- 229910000357 manganese(II) sulfate Inorganic materials 0.000 description 1
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- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229940116357 potassium thiocyanate Drugs 0.000 description 1
- 238000010944 pre-mature reactiony Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
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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
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/267—Marking of plastic artifacts, e.g. with laser
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
- B41M3/142—Security printing using chemical colour-formers or chemical reactions, e.g. leuco-dye/acid, photochromes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
-
- 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
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/262—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used recording or marking of inorganic surfaces or materials, e.g. glass, metal, or ceramics
Definitions
- the invention relates to a method for generating information. It further relates to a carrier body in which the information is generated and to the use of such a carrier body.
- Lasers are generally used to achieve a comparatively high Orls resolution and thus also a higher data and information density in the above-mentioned methods.
- Usual laser marking methods find a large field of application in the production of ID cards, driving licenses, bank cards, credit cards or the like from plastic. From DE 29 07 004 C2 it is known to apply visually readable information to identification cards by means of laser radiation. The information becomes visible through carbonization and / or carbonization of the plastic material, the information standing out in black or gray against a background of a different color, for example opaque or transparent. Other colors cannot be created with it.
- Laser marking is more secure than other marking methods against counterfeiting or manipulation, because it can also be carried out subsequently in layers on the inside.
- DE 44 17 343 A1 it is known to laser-introduce a single-color portion and / or gray and black portion of an image part into an identification card and to apply a complementary color image portion above it, in particular in the thermal transfer process, with respect to the image.
- point-shaped electrodes of a thermal printer line are heated in an electrically controlled manner, so that the color layer of a color film or multicolor color film introduced between the thermal printer line and the top layer melts and / or evaporates at points and is deposited on the top layer.
- the different processing of the card with high-tech devices produces a high depth of color, which makes it difficult to counterfeit by means of widespread color copying and color printing techniques, but requires an apparatus-intensive process.
- DE 199 55 383 A1 describes a method for applying colored information to an object by means of laser radiation with at least two different wavelengths, the color of the layer being adjustable by wavelength-selective bleaching of individual organic pigments as a result of subtractive color mixing.
- DE 100 11 486 A1 also describes a card-shaped data carrier and a method for producing the same, which makes it possible to apply colored information by means of laser processing without damaging the surface of the data carrier.
- a layer is completely bleached out locally by the laser radiation, so that the layer alone is at least almost transparent in the laser writing spot.
- an originally black, gray or dark brown stain can be set red, blue or green, depending on which of the laser-sensitive layers in the sandwich structure are bleached.
- the invention is based on the object of specifying a method for generating information in and / or on a carrier body which, with simple means, has a particularly high long-term resistance to light and moisture. Furthermore, a carrier body that is particularly suitable for this method is to be provided and the use of such a carrier body is to be specified.
- this object is achieved according to the invention by setting the reaction conditions for a number of starting materials held in and / or on the carrier body in a localized partial area of the carrier body that cause the starting materials to undergo a synthesis reaction.
- the invention is based on the consideration that, in previous systems, the long-term stability of the information is limited, inter alia, by the fact that color conversion reactions continue uncontrolled even without specific and intentional activation, for example by irradiated sunlight.
- This activation can take place through statistical suggestions of a commonly used dissociation reaction, since at a dissociation reaction, in which only one starting material is required, the necessary reaction conditions for the decomposition of the molecule into simpler molecules, atoms, ions or radicals are comparatively easy to achieve. For example, fading due to photochemical decomposition, which can lead to the destruction of both the information and the carrier body, can occur.
- the concept for generating long-term information is therefore a departure from such simple decolorization processes.
- An increase in the long-term stability of the information can be achieved precisely by consistently reducing the likelihood of subsequent, statistically triggered implementation processes. This can be achieved through a targeted increase in the complexity of the reaction used with correspondingly higher, more difficult to achieve reaction conditions.
- the use of reaction types is therefore provided which are based on the use of a plurality of starting materials or other complex reaction parameters.
- the generation of information that is resistant to light and moisture is achieved instead of destructive processes or dissociation through synthetic processes.
- Such synthesis reactions are preferably additions, eliminations, substitutions and in particular redox and complex formation reactions.
- atoms or groups of atoms are attached to a multiple bond.
- atoms or groups of atoms are separated from one molecule without others taking their place.
- the substitution is characterized by the replacement of an atom or an atomic group in a molecule by other atoms or atomic groups, whereby a covalent bond with one partner is released and then one is linked with another partner.
- the redox reaction is characterized by the electron donation of one partner (reducing agent) and the electron absorption by the other partner (oxidizing agent).
- reaction conditions A particularly high reaction temperature, a release of reactive starting materials or activated molecular species in sufficient numbers for the reaction and / or a sufficiently high particle mobility of the reactants are particularly important as reaction conditions.
- reaction conditions can be achieved by introducing thermal energy that is spatially resolved by laser light, which provides the activation energy of the process.
- the mobility of the starting materials in or on the carrier body is improved by the thermal energy and the reaction probability is increased so much that a sufficient reaction conversion is achieved.
- irradiation with laser light enables reaction-inhibiting environments to be broken up and the raw materials to be made available as reactants in the first place.
- the starting materials held in the carrier body Without the supply of energy, it should not be possible to induce the starting materials held in the carrier body to produce durable information to change properties or substances. Your statistical reaction probability should, for example, be reduced compared to the reaction partners of a bleaching process. Under normal environmental conditions, however, the activation energy necessary to generate reactive molecular species from the starting materials should not be achieved, nor should the reactive molecular species be present under normal conditions in sufficient local concentration to initiate a reaction or even one to achieve complete reaction sales.
- a further condition for suitable starting materials is an inertness towards the carrier body itself, so that it is not permanently changed by the starting materials and thereby possibly damaged or made unusable.
- material mixtures or compounds of all elements of the periodic table which are capable of such a “robust” use are therefore considered as starting materials held in the carrier body.
- These criteria are preferably met in particular by selected inorganic substance mixtures, since these migrate comparatively little in the carrier body and reactions with changes in substance or properties usually only occur at high temperatures of several hundred degrees Celsius, such as inside a Bunsen burner flame.
- the starting materials are advantageously chosen such that they are caused to undergo a synthesis reaction with a change in color. Colored information is therefore preferably generated.
- the starting materials of the synthesis reactions of different color changes are preferably chosen such that the product of the respective synthesis reaction is assigned to a basic color of a CMYK color scheme for cyan, magenta, yellow and contrast or black. With a suitable combination, mono or mixed colors can be created.
- the starting materials for synthesis reactions of different color changes are preferably kept in separate volume segments in the carrier body.
- the starting materials assigned to different color reactions are preferably kept in separate layers in the carrier body.
- a protective device or measures preventing this reaction is expediently provided.
- at least one of the starting materials is preferably kept encapsulated in the carrier body, the encapsulation advantageously being chosen such that it is broken up by the laser radiation and releases the relevant starting material as a reaction partner.
- the encapsulation is preferably designed such that it absorbs the laser radiation itself. This ensures that information is generated in a targeted manner in terms of time and location.
- auxiliary substances or layers absorbing the laser radiation are preferably embedded in the carrier body.
- absorbing auxiliaries are a mica pigment which is commercially available under the names "Iriodin” or "Mica", i.a. into consideration.
- the laser light irradiated onto the auxiliary substance is transferred to the selected starting substance via interference or mirror effects. At this point, this leads to a local temperature increase, a so-called hot spot or a hot point, and thus to an excitation of at least one starting material with usually at least one further starting material, so that they interact and initiate a synthesis reaction.
- catalytically active particles are embedded in the carrier body.
- the catalytic elements can in particular come from the 8th subgroup, the so-called platinum metals. Finely divided platinum, rhodium, palladium or mixtures thereof can catalyze redox reactions, in particular, analogously to their use in exhaust gas catalysts.
- a decomposition of a platinum complex would also be conceivable, such as a decomplexation of the orange-red (CH 3 ) 3 Ptl. By decomposing the (CH 3 ) 3 Ptl, elemental platinum could be obtained as a catalyst or even generate blackening at higher concentrations due to finely divided platinum.
- all commercially available lasers for labeling documents with emissions from UV to IR range can be used, e.g. with emissions of 190 nm for photolithography or with emissions of 10 ⁇ m for packaging labeling with a CO 2 laser.
- an Nd: YAG laser with an emission of 1064 nm is used.
- the method preferably provides, as basic components of the carrier body, substances which do not absorb laser radiation, such as paper, plastic films and / or a coloring, adhesive and / or lacquer layer, which are advantageously used for tamper-proof identification or for machine verification and simultaneous cancellation of the documents are labeled or marked.
- substances which do not absorb laser radiation such as paper, plastic films and / or a coloring, adhesive and / or lacquer layer, which are advantageously used for tamper-proof identification or for machine verification and simultaneous cancellation of the documents are labeled or marked.
- the starting materials held in and / or on the carrier body are preferably introduced into the paper pulp as an additional additive in film production processes, such as calendering, extruding or film casting, or during paper production and / or advantageously by coating processes, such as brushing, Spraying, spraying, coating, dipping, and / or by means of printing processes such as offset, steel engraving, gravure printing, flexographic printing, screen printing, indirect printing, thermal transfer printing, electrophotography and ink-jet processes in and / or on the carrier body.
- film production processes such as calendering, extruding or film casting
- coating processes such as brushing, Spraying, spraying, coating, dipping, and / or by means of printing processes such as offset, steel engraving, gravure printing, flexographic printing, screen printing, indirect printing, thermal transfer printing, electrophotography and ink-jet processes in and / or on the carrier body.
- the stated object is achieved by holding a number of starting materials in and / or on it in such a way that the reaction conditions for a synthesis reaction of the starting materials can be set in a laser-induced manner.
- the basic components of the carrier body are preferably provided as materials which do not absorb laser radiation, such as paper, foils, in particular thermoplastic materials, and / or a coloring, adhesive and / or lacquer layer.
- the starting materials are advantageously selected such that they are caused to undergo a synthesis reaction changing their color, which is visible to the human eye.
- Inorganic reactions are advantageously used as starting materials for synthesis reactions involving a color reaction. These can be used to generate intense colored information that is particularly resistant to light and moisture, among other things, via redox or complexation reactions. are and are therefore also suitable for the identification of valuable and / or security documents with a particularly high level of security against forgery.
- Word and symbols such as inscriptions, logos or barcodes, can be generated as colored information.
- the starting materials in the carrier body are preferably selected such that the product of the respective synthesis reaction is assigned to a basic color of a CMYK color scheme for cyan, magenta, yellow and contrast or black.
- the carrier body is expediently equipped for the generation of permanent, intensive colored information.
- MnSO 4 , KNO 3 and KOH are preferably provided as starting materials for a product with the color blue (“cyan”).
- cyan Alternatively or cumulatively, for a product with the color red (“magenta”) are preferred Fe 2 (SO 4 ) 3 and KSCN are available as starting materials.
- Cr 2 O 3 , KNO 3 and KOH are preferably kept as starting materials for a product with the assignment to the color yellow (“yellow”) .
- Cu 2+ and NH 3 for the reaction to the tetraammine copper complex or the substances Co (NO 3 ) 2 and Al 2 are preferred O 3 and / or for a product associated with the color green, preferably Co (NO 3 ) 2 and ZnO or the substances K 2 CrO and C 3 H 7 OH as starting materials.
- the starting materials for synthesis reactions of different color changes are preferably held in separate volume segments in the carrier body.
- an inner color design is also useful in addition to the outer color design of the relevant carrier body. Therefore, the starting materials assigned to different color reactions are preferably kept in separate layers in the carrier body.
- auxiliary substances or laser absorbing agents are preferably in the carrier body layers embedded.
- the carrier body for the assignment to contrast or black, alternatively or cumulatively to the colors blue (“cyan”), red (“magenta”) and / or yellow (“yellow”) as an auxiliary agent, which radiates the irradiated Laser radiation is transferred via interference or mirror effects to a selected starting material, preferably a mica pigment such as "Iriodin", but also simply titanium dioxide or carbon in the form of carbon black or advantageously also a color pigment such as phthalocyanine.
- a selected starting material preferably a mica pigment such as "Iriodin", but also simply titanium dioxide or carbon in the form of carbon black or advantageously also a color pigment such as phthalocyanine.
- the starting materials provided in it for a synthesis reaction are preferably at least partially encapsulated by an encapsulation which inhibits this reaction until excitation by laser radiation.
- the encapsulation is selected in such a way that it is broken up by the laser radiation and only releases the relevant starting material as a reaction partner when it is broken up.
- the encapsulation is preferably designed such that it absorbs the laser radiation itself.
- catalytically active particles are embedded in the carrier body.
- the carrier body equipped in this way can expediently be used in all areas in which valuable and / or security documents are concerned, in the logistics area or ticketing and for presentations.
- the carrier body is therefore preferably used as identification, driving license, credit or health card, ticket or film.
- the advantages achieved with the invention consist in particular in that constant information is generated precisely by the synthesis reaction of a number of starting materials.
- typical and sensitive detection reactions for subgroup metals known from the literature can be used to generate particularly intensive colored information which is resistant to environmental influences.
- Reliable process control is made possible precisely by irradiating at least one reactant with laser light. Laser irradiation ensures that a reaction temperature that is sufficiently high for the desired synthesis reaction is provided and / or that the irradiated substances are sufficient. accordingly moved and / or caused to release reactive molecular species.
- the carrier body permits a specifically controlled process control.
- the starting materials of a synthesis reaction are already reactive at room temperature or by rubbing with one another, at least one of the starting materials is held encapsulated in the carrier body so that the synthesis reaction is only made possible by laser-induced breaking of the encapsulation.
- While a starting material that does not or only slightly absorb the laser radiation is activated indirectly by the laser radiation by means of auxiliary substances or layers absorbing the laser radiation embedded in the carrier body, by focusing the laser radiation on the selected starting material via interference or mirror effects of the auxiliary substances or layers and there The local temperature increase creates a hot spot at which the starting material is made to interact with at least one other starting material or to undergo a monomolecular reaction.
- Catalytically active particles embedded in the carrier body reduce the activation energy of the starting materials.
- the carrier body enables a high degree of flexibility in the desired graphic designs in the form of diverse color variations and color patterns.
- the method for laser-induced in-situ generation of information in the carrier body thus enables use for marking or lettering papers, foils and other plastic documents, in particular increases the security against forgery of a document identified in this way and can furthermore be used for machine verification and simultaneous validation of Documents such as tickets.
- the method can be used in all areas of daily life, in which it is a question of the rapid and locally targeted application and / or introduction of permanent word and / or symbols, among other things. An embodiment of the invention is explained in more detail below.
- the starting materials selected for a desired synthesis reaction can be brought into an inner and / or outer area of a data carrier acting as a carrier body in a precise, matrix-like or layer-like manner by means of various insertion or application methods.
- the basic components or composite materials on which the carrier body is based are, for example, paper or plastic films, and also between and / or colored, adhesive or lacquer layers applied to them.
- the starting materials are introduced as an additional additive during film production. This applies in particular to the common film production processes such as calendering, extruding and film casting. In papermaking, the starting materials selected for the synthesis reaction can also be incorporated into the paper pulp as an additional additive.
- foils and papers has the advantage that in the production of documents, such as cards and IDs, no major interventions are necessary in the production process itself.
- Various coating processes such as brushing, spraying, spraying, coating, dipping, and / or printing processes, such as offset, steel engraving, gravure printing, flexographic printing, screen printing, indirect printing, thermal transfer printing, electrophotography and ink-jet processes can be used to achieve the desired synthesis reaction Bring selected starting materials into and / or onto the carrier body.
- a screen printing varnish that is highly filled with the starting materials is printed onto an opaque plastic film and overlaminated with several layers of plastic film.
- This procedure represents a particularly flexible embodiment, since it makes it easy to produce internal prints when manufacturing composite materials such as cards, ID cards made of all-plastic or paper-plastic compounds.
- other synthesis reactions are also conceivable, such as eliminations in which part of the molecule is split off, which also changes its physical properties, or additions in which new covalent bonds are formed and thus generate a “new” substance, or substitution reactions in which, for example, ligands of a complex are exchanged.
- Example 1 Blue laser inscription A stoichiometric mixture of the inorganic starting materials from cobalt (II) nitrate with aluminum sulfate and a binder is printed on a plastic card, for example by screen printing. Optionally, the mixture also contains "Iriodin"( ⁇ 0.5 percent by weight).
- This plastic card can then be laminated with an NIR-permeable overlay film.
- Nd: YAG laser the hot spot or the generated thereby occurs are called the reaction to the cobalt spinel CoAl 2 ⁇ 3 ⁇ known in the literature as Thenards blue.
- the "Iriodin” is used in the extended recipe as an auxiliary agent that absorbs the laser radiation in order to transfer the laser radiation to the starting materials and thus to to focus the starting materials and / or to minimize the laser energy required for the reaction. Excessive laser radiation usually leads to carbonization, which can minimize or mask the blue color impression.
- FIG. 1 schematically shows a pigment 2, “iriodin”, embedded in a matrix 1, which absorbs the irradiated laser light 6 in its mica core 4 and, as symbolized in FIG. 1 by a flash 8, interferes with its other effects Transfer of inorganic starting materials Co (NO 3 ) 2 and Al 2 O 3 located in the interface 1. This creates a hot spot 12 at the interface 10 of the pigment 2, so that the reaction described in Example 1 is initiated with a change in color.
- Example 2 Green laser marking
- a stoichiometric mixture of the inorganic starting materials of 2 cobalt (II) nitrate with 1 zinc oxide is added in the exemplary embodiment in film production, for example in the calendering process, as an additive.
- the mixture also contains proportions of "Iriodin"( ⁇ 0.5 percent by weight).
- this film is then joined together with other components to form a plastic card which is only covered with an NIR-permeable overlay film.
- the demAG laser causes the reaction to the zinc-cobalt spinel ZnCo 2 O ⁇ known in the literature as Rinmanns-Green at the hot spot or hot spot generated thereby.
- the “Iriodin” in turn serves as an extended formulation the auxiliary material absorbing laser radiation in order to focus the laser radiation on the starting materials and / or to minimize the laser energy required for the reaction. Excessive laser radiation usually leads to carbonization, which can minimize or mask the green color impression.
- Example 3 Blue ("Cvane") laser marking A stoichiometric mixture of the inorganic starting materials from pink manganese (II) sulfate with 2 potassium nitrate and 2 potassium hydroxide is added as an additive to an adhesive in hot melt film production. Optionally, this contains Mixture still shares in "Iriodin”( ⁇ 0.5 percent by weight). In the exemplary embodiment, this film is then joined together with other components to form a plastic card which is only covered with an NIR-permeable overlay film. When irradiated with an Nd: YAG laser, the reaction to the green-blue (“cyan”) manganate, which is also known as the oxidation melt, occurs at the hot spot or hot spot thereby generated.
- Nd Nd: YAG laser
- the "Iriodin” in turn serves as an extended formulation the auxiliary material absorbing laser radiation in order to focus the laser radiation on the starting materials and / or to minimize the laser energy required for the reaction. Excessive laser radiation usually leads to carbonization, which can minimize or mask the green-blue ("cyan") color impression.
- the reaction to the green-blue ("cyan") manganate can be described with the following equation: MnSO 4 + 2 KNO 3 + 2 KOH ⁇ K 2 MnO 4 + 2 KNO 2 + H 2 SO 4
- Example 4 a) Yellow (“Yellow”) laser marking and b) Green laser marking a) A stoichiometric mixture of the inorganic starting materials from green chromium (III) oxide with 3 potassium nitrate and 2 potassium hydroxide is analogous to one of Examples 1 to 3 in a matrix.
- the use of “iriodin” can be dispensed with in this exemplary embodiment, since Cr 3+ absorbs very well in the red spectral range.
- the reaction to the yellow-orange (“yellow”) dichromate also known as chromium oxidation melt
- Cr 6+ a.
- FIG. 2 schematically shows a pigment 2, yellow chromate (Cr 6+ ) embedded in a matrix 1, the matrix 1 containing 14 traces of an alcohol (R-OH) as a reducing agent.
- the flash 8 symbolizes a hot spot 12 induced by the irradiated laser light 6 or a hot spot at the interface 10 of the pigment 2 (Cr 6+ ) to matrix 1.
- R-HO aldehyde
- Cr 6+ reduced to green Cr 3+ according to the equation described in Example 4b).
- Example 5 Red (“magenta”) laser inscription a) Iron in the oxidation state +3, for example iron (III) sulfate, forms a deep red (“magenta”), characteristic complex according to the equation with thiocyanates even in the non-aqueous medium :
- Iron (II) sulfate does not require encapsulation. It is oxidized with potassium nitrate and potassium thiocyanate and water by laser action to iron with the oxidation level +3, which immediately reacts to the deep red (“magenta”), characteristic complex according to the equation:
- Europium with oxidation level +2 shows a localized red fluorescence when oxidized with saltpetre to oxidation level +3 after laser irradiation in a blue fluorescent environment.
- the starting materials presented in Examples 3, 4 and 5 for their laser-induced characteristic color reactions can in each case be combined with one another in different, delimited layers 16a-d, each of which represents a carrier body with a correspondingly reactive matrix, as shown in FIG. 3 .
- a film composite structure with four different differently doped layers 16a-d are provided, the bottom layer 16a with MnSO 4 , KNO 3 and KOH (example 3), the second bottom layer 16b with Fe 2 (SO) 3 and KSCN (example 5), the third layer 16c from below is doped with Cr 2 O 3 , KNO 3 and KOH (example 4) and the top layer 16d with "Iriodin".
- the respective synthesis reaction is initiated by irradiation with an Nd: YAG laser confocal optics, focused on selected volume segments 18a-d within the respective layer 16a-d (z-coordinate) at specific positions (xy-coordinates), with resolutions of approximately 10 ⁇ m in the xy-direction and approximately 30 ⁇ m in z Due to the comparatively low focus sharpness in the z direction, each layer 16a-d is scanned individually in order to carry out the synthesis reaction on the selected volume segments 18a-d setting of MnSO 4 with KNO 3 and KOH a color change to blue (“cyan”) was achieved (example 3). In the second step, the laser is then set on the second lowest layer 16b and focused on the desired xy positions within it.
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Credit Cards Or The Like (AREA)
- Adornments (AREA)
- Polymerisation Methods In General (AREA)
- Holo Graphy (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10316034A DE10316034A1 (de) | 2003-04-07 | 2003-04-07 | Verfahren zur Erzeugung einer Information, Trägerkörper, in dem die Information erzeugt wird, sowie Verwendung eines derartigen Trägerkörpers |
| PCT/EP2004/003218 WO2004089638A1 (de) | 2003-04-07 | 2004-03-26 | Verfahren zur Erzeugung einer Information, Trägerkörper, in dem die Information erzeugt wird, sowie Verwendung eines derartigen Trägerkörpers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1610956A1 true EP1610956A1 (de) | 2006-01-04 |
| EP1610956B1 EP1610956B1 (de) | 2006-10-25 |
Family
ID=33154117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04723548A Expired - Lifetime EP1610956B1 (de) | 2003-04-07 | 2004-03-26 | Verfahren zur erzeugung einer information, trägerkörper, in dem die information erzeugt wird, sowie verwendung eines derartigen trägerkörpers |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1610956B1 (de) |
| CN (1) | CN1767953A (de) |
| AT (1) | ATE343482T1 (de) |
| CA (1) | CA2519404A1 (de) |
| DE (2) | DE10316034A1 (de) |
| WO (1) | WO2004089638A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007037981A1 (de) | 2007-08-10 | 2009-02-26 | Bundesdruckerei Gmbh | Farbige Sicherheitsdokumentindividualisierung |
| DE102010062046A1 (de) | 2010-11-26 | 2012-05-31 | Bundesdruckerei Gmbh | Wert- und/oder Sicherheitsdokument mit farbigem Durchsichtsicherheitsmerkmal und Verfahren zu dessen Herstellung |
| DE102010062032A1 (de) | 2010-11-26 | 2012-05-31 | Bundesdruckerei Gmbh | Wert- und/oder Sicherheitsdokument und Verfahren zu dessen Herstellung |
| DE102012211767B4 (de) | 2012-07-05 | 2014-03-13 | Bundesdruckerei Gmbh | Sicherheitsdokumentenrohling für eine farbige Laserpersonalisierung, Verfahren zur Herstellung eines Sicherheitsdokuments mittels farbiger Laserpersonalisierung eines Sicherheitsdokumentenrohlings und Sicherheitsdokument. |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1771311C3 (de) * | 1968-05-04 | 1975-05-28 | Curzon Nassau Dobell (Bahamas) | Buch, Zeitschrift od.dgl. mit einer Innenseite, die zu einem Teil eine phototrope und zum anderen Teil eine unveränderliche Kolorierung trägt |
| DE2907004C2 (de) | 1979-02-22 | 1981-06-25 | GAO Gesellschaft für Automation und Organisation mbH, 8000 München | Ausweiskarte und Verfahren zu ihrer Herstellung |
| DE3048733C2 (de) * | 1980-12-23 | 1983-06-16 | GAO Gesellschaft für Automation und Organisation mbH, 8000 München | "Ausweiskarte und Verfahren zur Herstellung derselben" |
| DE3311882A1 (de) * | 1983-03-31 | 1985-02-07 | Carl Baasel Lasertechnik GmbH, 8000 München | Materialstueck aus aluminium, vorzugsweise aluminiumschild und verfahren zur herstellung desselben |
| KR910000826B1 (ko) * | 1986-11-14 | 1991-02-09 | 미쓰비시덴기 가부시기가이샤 | 레이저 마킹 방법 |
| DE3908312A1 (de) * | 1989-03-14 | 1990-09-27 | Langhals Heinz | Neue fluoreszierende perylen- und diketopyrrolopyrrol-farbpigmente |
| DE4417343C2 (de) | 1994-05-18 | 1996-03-21 | Orga Kartensysteme Gmbh | Ausweiskarte und Verfahren zu deren Herstellung |
| DE19824349C2 (de) * | 1998-05-30 | 2000-06-15 | Beiersdorf Ag | Verfahren zur Herstellung einer laserbeschriftbaren Glasscheibe oder eines Verbundglases |
| GB2352824A (en) * | 1999-07-30 | 2001-02-07 | Nokia Mobile Phones Ltd | Laser markable material comprising TiO2 pigmented thermoplstic elastomer |
| DE10011486A1 (de) | 1999-08-30 | 2001-03-01 | Orga Kartensysteme Gmbh | Kartenförmiger Datenträger und Verfahren zu seiner Herstellung |
| DE19955383A1 (de) | 1999-10-29 | 2001-05-03 | Orga Kartensysteme Gmbh | Verfahren zum Aufbringen von farbigen Informationen auf einen Gegenstand |
| DE10053264A1 (de) * | 2000-10-26 | 2002-05-08 | Orga Kartensysteme Gmbh | Verfahren zum Einschreiben von Daten auf/in Datenträger mittels Laserstrahlung und damit hergestellte Datenträger |
| ATE306400T1 (de) * | 2001-02-28 | 2005-10-15 | Sherwood Technology Ltd | Laserbeschriftung |
| US6692895B2 (en) * | 2001-05-25 | 2004-02-17 | 3M Innovative Properties Company | Imageable article and method of imaging |
-
2003
- 2003-04-07 DE DE10316034A patent/DE10316034A1/de not_active Ceased
-
2004
- 2004-03-26 EP EP04723548A patent/EP1610956B1/de not_active Expired - Lifetime
- 2004-03-26 CN CN200480009089.2A patent/CN1767953A/zh active Pending
- 2004-03-26 DE DE502004001851T patent/DE502004001851D1/de not_active Expired - Lifetime
- 2004-03-26 AT AT04723548T patent/ATE343482T1/de not_active IP Right Cessation
- 2004-03-26 CA CA002519404A patent/CA2519404A1/en not_active Abandoned
- 2004-03-26 WO PCT/EP2004/003218 patent/WO2004089638A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004089638A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE502004001851D1 (de) | 2006-12-07 |
| CN1767953A (zh) | 2006-05-03 |
| ATE343482T1 (de) | 2006-11-15 |
| CA2519404A1 (en) | 2004-10-21 |
| WO2004089638A1 (de) | 2004-10-21 |
| DE10316034A1 (de) | 2004-12-30 |
| EP1610956B1 (de) | 2006-10-25 |
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