EP2903835A1 - Sicherheitsmerkmal und das sicherheitsmerkmal enthaltendes wert- und/oder sicherheitsprodukt - Google Patents
Sicherheitsmerkmal und das sicherheitsmerkmal enthaltendes wert- und/oder sicherheitsproduktInfo
- Publication number
- EP2903835A1 EP2903835A1 EP13773685.6A EP13773685A EP2903835A1 EP 2903835 A1 EP2903835 A1 EP 2903835A1 EP 13773685 A EP13773685 A EP 13773685A EP 2903835 A1 EP2903835 A1 EP 2903835A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pattern
- absorptive
- luminescent
- luminescence
- security feature
- 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
Classifications
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/005—Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations
- G07D7/0054—Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations involving markings the properties of which are altered from original properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/20—Testing patterns thereon
- G07D7/202—Testing patterns thereon using pattern matching
- G07D7/2033—Matching unique patterns, i.e. patterns that are unique to each individual paper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/378—Special inks
- B42D25/387—Special inks absorbing or reflecting ultraviolet light
Definitions
- Security feature and the security feature containing value and / or security product
- the present invention relates to a security feature, a value and / or security product containing this security feature, in particular a security and / or security document, as well as a production method for the security and / or security product.
- a security and / or security document may be, for example, a passport, identity card, driving license or another ID card or a means of payment, in particular a
- the security features used in the security and / or security documents can only serve to prove the authenticity of the products regardless of their nature or by their user.
- Such security features are, for example, mottled fibers, guillotine, the special paper of banknotes and the like.
- Personalizing, for example, personalizing security features also contain in coded form or in plain text information about the type of document, the user of this document or an object to which the document is uniquely assigned. Such information may be a user's photo, personal information such as name, birthday, birthplace, signature, or a personal identifier such as a member's number.
- Another security feature that individualizes the document may be, for example, a serial number of the document.
- DE 10 2007 018 450 A1 discloses a laminated security document which is in the form of a document composite which has at least one inner layer and at least two overlay foils covering the inner layer.
- the inner layer contains a color image with the
- the color light image is an exposed positive-positive Silver dye bleach photo-emulsion.
- it is also known to produce the facial image of a person on an identity or security document by printing technology. This is pointed out in DE 199 06 388 A1. This document relates to a method and apparatus for personalizing and verifying such documents.
- a security and / or value document with an individualizing security feature is given, for example, in DE 10 2008 012 423 A1.
- This document is designed as a polymer layer composite, which is produced by lamination of several substrate layers and in which at least one individualizing information is stored by printing technology.
- the information is decomposed in the composite into at least two print separations, each comprising a part of the information.
- the at least two pressure separations are arranged in at least two spaced-apart planes.
- a printed image embodied by the information is decomposed into pixels and each pixel is assigned to exactly one of the at least two print separations.
- the print can reproduce a facial image.
- the print separations are printed on the substrate layers.
- luminescent means can be applied to a substrate layer surface arranged below the printing separations so that white light is radiated flat in the case of UV excitation.
- the light is filtered by the pixels of the above arranged pressure separations, so that the information is preferably to recognize color in a vertical plan view.
- the security feature should be located in a secure counterfeiting and / or falsification and / or copy of the inner product layer.
- the security feature can also be used to secure personalization on an external product layer.
- the present invention is also an essential further object to provide a cost-effective, easy and quick to implement security feature.
- value and / or security product and in particular the term “value and / or security document” are mentioned in the description and in the claims of the present application, this includes, for example, a passport, identity card, driver's license or another ID card.
- the product may be, for example, a smart card.
- the security and / or value document may be in ID 1, ID 2, ID 3, or any other format, such as a booklet form, such as a passport-like item.
- a security and / or value product is generally a laminate of several document layers, which are connected register-accurate under heat and under increased pressure. These products should meet the standardized requirements, for example ISO 10373, ISO / IEC 7810, ISO 14443.
- the product layers consist, for example, of a carrier material which is suitable for lamination.
- value and / or security product includes, in addition to security and / or security documents, patches, labels and the like which are or are inseparably connected as security elements of the documents and for this purpose with the document carrier and form the security feature there.
- the entirety of optically active substances is to be understood according to the present invention, namely the at least one luminescent agent and the at least one absorptive spectral filter means, which in a relative arrangement to each other, so that a visually perceptible pattern is formed.
- the security feature can be produced as part of a value and / or security document or as a separate product (security element) that is permanently connected to a value and / or security document, such as a patch, label or the like. This can be glued, for example, on the document, which can be used as an adhesive and a paint.
- the security feature will generally only occupy part of the surface of the document.
- the term "luminescence” is called, it is to be understood as fluorescence, phosphorescence and that both with Stokes and anti-Stokes shift. According to the present invention, this is preferably to be understood as photoluminescence. Furthermore, the luminescence may, for example, also be electroluminescence. As used in the specification and claims of the present application, the term “pattern” is to be understood as meaning a somewhat distributed distribution of visible elements, preferably in a two-dimensional arrangement, which produce a self-contained representation, for example an image, picture element , Characters, in particular an alphanumeric character, a symbol, coat of arms, a formula or the like.
- pattern element As far as in the description and in the claims of the present application, the term, pattern element 'is called, it is to be understood as a constituent part of a pattern.
- a pattern element serves as the smallest structural element for forming the pattern, with all pattern elements forming the pattern.
- the patterning material may be either transparent, translucent or opaque. Furthermore, it may have a certain brightness (absorption, remission), ie it may, for example, have blackening, gray tinting or whitening, and / or it may have a (spectral) coloring and, in turn, a certain brightness.
- the pattern elements may have a circular (dot-shaped), rectangular, square, hexagonal or other shape.
- Pattern elements can be the smallest elements of a perceptible representation to which one of the color values or hues can be assigned in a colorful color space (subtractive CMYK color space, additive RGB color space).
- the individual pattern elements can each still be composed of pixels, so that a pattern element of a plurality of primary colors of the color space is formed the respective hue of the pattern element.
- the object underlying the present invention is achieved by the security feature according to the invention and the value and / or security product according to the invention containing the security feature, in particular value or security document.
- the safety feature includes on and / or in a product carrier, for example in one or more sample planes, in particular on one of the product carrier surfaces, wherein in particular an inner surface is considered, at least one luminescent agent and additionally at least one absorptive spectral filter means for the at least one luminescent agent outgoing luminescence radiation.
- the at least one absorptive spectral filter means may be located on one of the product carrier surfaces, in particular one of the inner surfaces.
- a security feature visible to the naked eye for example the portrait image of a person, in particular of the document holder, is formed.
- the security feature may be formed, for example, by a multi-colored representation of any pattern.
- the spectral filter means Due to their optical absorption properties in the visible spectral range, the spectral filter means have a filtering effect on the luminescence radiation emanating from the at least one luminescence medium.
- the facial image does not only appear colorful under normal illumination with, for example, white light (with spectral broadband radiation in the visible range), i. with more than two shades (with different color impressions, not solely due to differences in brightness), but also under lighting conditions under which luminescence is normally observed, i. without illumination with visible light, but only with electromagnetic radiation, with which the at least one luminescent agent is excited.
- the portrait image of the document holder on an ID document has hitherto only been realized by an image that only appears multicolored when illuminated with light in the visible spectral range.
- a single-color shadow image with luminescent color in the visible spectral range which can be excited by means of UV radiation could, in principle, also be produced.
- the introduction of RGB shadows is known and commercially available.
- wel Polycarbonate for example, currently has limited ink and printer availability. In particular, it is desirable to limit the number of printheads needed.
- a desired multicolor pattern according to the present invention can also be rendered multicolored under the verification conditions for luminescent security features. Therefore, it is not necessary to form the (objective) luminescence pattern for generating the luminescent pattern image from luminescent (basic) colors suitable for this purpose by, for example, printing separations with suitable luminescent colorants in each case one (basic) color (for example, red, green and blue according to the RGB color space) and the luminescence pattern is then formed by color mixing from the luminescent print separations.
- the luminescent pattern image already results with the aid of the visible under conventional illumination conditions with visible light design of a template, in particular a print template.
- a template in particular a print template.
- a possible color cast is compensated by the human eye and still perceived as white.
- a pattern executed under conventional illumination in the visible spectral range only in monochrome or black-and-white or in shades of gray will also appear only monochrome or black-and-white or in shades of gray under luminescence viewing. Therefore, the present invention extends to both monochrome, black and white and shades of gray appearing renderings of a pattern as well as the above-explained multicolor (for example, two-, three- or multi-color) pattern reproduction.
- a pattern under luminescent illumination conditions will then appear with virtually the same color / black / white / gray distribution as under conventional conditions with visible light illumination. Therefore, with the security feature according to the invention instead of a colorful, ie more than two colors, pattern also monochrome or black / white or formed in shades of gray pattern can be displayed.
- the luminescence radiation has a very broad band in the visible spectral range, it is possible to produce virtually white luminescence light (with the exception of a slight color cast, if appropriate). This is achieved by additive color mixing by a plurality of broadband emitting luminescent agents, but also with a plurality of narrow-band luminescent luminescent agents or with a mixture of narrow-band and broadband luminescent luminescent agents.
- the luminescent radiation filtered by the absorptive spectral filter means and incident on the observer eye appears with the same color as the at least one spectral filter means under normal illumination conditions in the visible spectral range.
- the security feature is reproduced with a corresponding color cast. Since the human eye adapts to different color temperatures, however, such a color cast without any possibility of comparison is barely perceived.
- the at least one spectral filter means can not filter out luminescence radiation by filtering, which is not already present. Therefore, the pattern reproduction in the areas whose color of the spectral filter material is in a spectral range in which no luminescent radiation is emitted will appear dark.
- a product carrier or a precursor of the valuable and / or security product according to the invention is provided, then (b) the at least one luminescent agent and the at least one absorptive spectral filter agent on at least one of the surfaces of Applied product carrier or precursor.
- the precursor can then be connected to further product carrier layers or coated with further product layer material so that the surface (s) provided with the at least one phosphor and / or the at least one absorptive spectral filter means is / are arranged in the inside of the value and / or security document in one or more pattern levels.
- the product with the security feature is first placed in a device suitable for this purpose, (b) illuminates the security feature of the product with visible light and views the security feature; this includes either an immediate consideration by humans or a machine observation by means of suitable devices and image evaluation systems; and (c) illuminating the security feature of the product with the excitation radiation for the at least one luminescent agent and viewing the security feature in the form of luminescent light emitted in the visible spectral range;
- the latter step also includes either an immediate consideration by humans or a machine observation by means of suitable devices and image evaluation systems.
- the steps b) and c) are preferably carried out successively.
- step b) is not absolutely necessary, since verification is also possible by detecting the security feature solely via the filtering according to the invention of the luminescent light emanating from the at least one luminescent agent by means of a pattern formed by the spectral filter means.
- a device suitable for verification has a holder for the product, a light source for visible light and a light source for electromagnetic radiation in the spectral range for the excitation of the at least one luminescent agent, for example a UV light source.
- a suitable optics, recording and evaluation systems can be provided.
- the verification can be considered successful if the security feature forming pattern appears not only in the visible light spectrum but also under luminescent lighting conditions (or at least under luminescent lighting conditions) and optionally also if the two pattern reproductions are identical and with a given appearance be reproduced.
- the at least one absorptive spectral filter means may be present in particular in the form of colors predetermined in accordance with the CMYK color space, for example in the form of printing inks with which print separations are produced, the print separations being composed to form a particularly colored pattern.
- the at least one absorptive spectral filter agent can be used by one or more printing inks or printing inks or colorants in the form of dyes or pigments in printing inks or printing inks.
- the absorptive spectral filter medium can be either a single colorant having a predetermined absorption and reflectance spectrum or a mixture of a plurality of colorants, each having an individual absorption and reflectance spectrum and having in the mixture a different absorption and remission spectrum from the individual colorants. which results subtractive from the spectra of the individual colorants.
- the absorptive spectral filter means may be formed by one or more organic colorants or by one or more inorganic colorants or by a mixture of at least one organic and at least one inorganic colorant.
- Organic colorants may typically be azo compounds.
- Inorganic colorants may, for example, be Ru.sup. + And titanium dioxide.
- the absorptive spectral filter medium may contain other customary constituents, for example solvents, binders, resins, varnishes and auxiliaries, such as brighteners.
- the at least one absorptive spectral filter means is transparent or translucent in the manner of a glaze. It is preferred that the absorptive spectral filter means is also at least partially transparent to the excitation radiation for the at least one luminescent agent.
- the face image of the document holder by means of this appropriate
- Printing inks are colorfully printed, for example in several color separations, which may be formed, for example, in a pattern level or in multiple pattern levels. Due to their optical absorption properties in the visible spectral range, these printing inks act on the luminescence radiation emanating from the at least one luminescence medium.
- the optical filter characteristics of the at least one absorptive spectral filter means which has little or no luminescence under excitation conditions for the luminescent agents, with the at least one luminescent agent having strong luminescence under the luminescent illumination conditions, a pattern is perceptible under the luminescent illumination conditions that appears like the pattern perceptible under normal viewing.
- Spectral filter means not even when excited by electromagnetic radiation.
- the absorptive spectral filter means given if also all, select such that they under the conditions of excitation for the at least one luminescent agent in the visible spectral region luminesce / luminesce, each with a suitable color (ie with a spectral distribution of the luminescence, that of the light remission of the absorptive spectral filter means at least similar lent), because even when viewing the pattern under normal lighting conditions a more brilliant representation is achieved, for example when reproducing a portrait of a person whose skin color with a more natural appearance.
- the magenta color separation of the pattern may preferably be produced with a spectral filter means which additionally luminesces in consideration of the color shift in the luminescence.
- a spectral filter means which additionally luminesces in consideration of the color shift in the luminescence.
- This additional property may be achieved by including in the absorptive spectral filter means, in addition to one or more colorants, one or more brighteners that luminesce due to the excitation with electromagnetic radiation, or by being formed by one or more colorants also has luminescent properties for the absorptive substances.
- the excitation radiation used to excite the luminescent agent can be narrow-band (light with an emission with a half-width of at most 25 nm) or broad-band (half-value width of more than 25 nm).
- the at least one luminescence agent can be designed to luminesce by excitation with UV radiation in the visible spectral range.
- a representation of the pattern without illumination with electromagnetic radiation in the visible spectral range is possible.
- an excitation with IR radiation is possible.
- luminescence with anti-Stokes shift would have to be present so that it lies in the visible spectral range.
- the pattern shines brilliantly in a multi-color representation, preferably under illumination with white luminescent light the same color distribution appears as the pattern formed with the absorptive spectral filter means.
- the at least one luminescent agent can be used in the form of one or more printing inks or printing inks or in the form of luminescent substances or luminescent pigments in printing inks or printing inks.
- the at least one luminescent agent may contain further conventional constituents, for example solvents, binders, resins, varnishes and auxiliaries.
- the at least one luminescent agent may have a specific absorption or remission in the visible spectral range, i. be colored, or it may be colorless. In particular, it is preferred if the at least one luminescent agent is transparent or translucent in the manner of a glaze, and in particular also colorless.
- the at least one luminescent agent luminesces broadband in the visible spectral range, i. in a spectral range from about 400 nm to about 750 nm. If the spectral distribution of the luminescence in this region is not uniform, the emitted light is also colored, for example slightly yellowish, when higher energy (shorter wavelength) spectral components occur to a lesser extent, or greenish, when lower energetic (longer wavelength) and higher energy spectral components occur to a lesser extent.
- the luminescent agent can be formed by a single luminescent substance, namely an organic or an inorganic substance, or by a mixture of a plurality of luminescent substances, namely organic and / or inorganic substances.
- Typical luminescent substances are specified, for example, in US Pat. No. 3,474,027 A, DE 198 60 093 A and DE 10 2007 035 592 A1, the disclosure of which is incorporated into the present application.
- These are host lattices doped with rare earths, in particular substances doped with terbium, cerium and / or europium, for example oxy-sulfides and oxynitrides.
- the pigments formed herewith can additionally be coated with organic substances in order to increase the quantum yield of the luminescence.
- organic luminescent agents are also usable, such as rhodamine 6G or fluorescein.
- the luminescent agent effectively forms an illumination for the pattern formed with the absorptive spectral filter means. If a plurality of luminescent agents are used, they may be located, in particular, in different surface areas of the valuable and / or security product.
- a conventional printing method can be used, for example offset printing, letter set printing, flexographic printing, a digital printing method, such as inkjet printing, intaglio printing and screen printing.
- At least one luminescence pattern formed with the at least one luminescent agent and at least one absorptive pattern formed with the at least one absorptive spectral filter can be located directly one above the other in different sample planes or in the same sample plane, in the latter case form the same layer.
- the luminescence patterns may also be formed in at least one luminescent layer, which are spaced apart from the absorptive pattern in at least one absorptive layer.
- the respective layers can be applied to different surfaces of different films, for example, in each case one surface of a plurality of films, which are then collected and laminated together.
- the at least one luminescence medium may be formed in negative pressure, for example over the entire surface, and individualization by means of the at least one absorptive spectral filter means by means of inkjet printing ink in an overlying pattern plane.
- the luminescent light can be absorbed to achieve a different color to the original color of the luminescent light color impression to complete extinction in certain areas.
- the luminescent agent can be present over the entire area or preferably in the form of a pattern in a surface area of the valuable and / or security product occupied by the security feature.
- the absorptive spectral filter means in the area occupied by the security feature over the entire surface or preferably in the form of a
- both the luminescent agent and the spectral filter means are present in the form of patterns, namely in the form of the luminescence pattern or in the form of the absorptive pattern, these can preferably be arranged in register one above the other. If the luminescent agent is present over the entire area in the area of the security feature and the absorptive spectral filter means forms an absorptive pattern, the luminescent agent can form, for example, backlighting of the absorptive pattern.
- the pattern forming the security feature according to the invention can typically be formed from a multiplicity of pattern elements.
- Each of the pattern elements or at least a part of the pattern elements can be recognized both under the normal illumination conditions and under the lighting conditions suitable for luminescence perception.
- the pattern elements are formed according to a preferred embodiment of the present invention by the at least one luminescent agent and the at least one absorptive spectral filter means.
- luminescent pattern elements are formed with the at least one luminescent agent and absorptive pattern elements are formed with the at least one absorptive spectral filter medium.
- the luminescence pattern elements and the absorptive pattern elements are preferably of substantially the same size and are formed register-accurate to each other on at least one surface of the product carrier or at least one surface of an intermediate product, for example printed.
- the luminescence pattern elements are therefore one above the other and in fact substantially registration. Above or below (in the vertical direction) of the absorptive pattern elements is therefore also the material of the luminescent means or the luminescence pattern elements are arranged and vice versa.
- the at least one luminescent agent forms one or more continuous (gapless) or discontinuous layer (s) which also extend into regions outside the absorptive pattern elements.
- This layer (s) can be rasterized in individual pixels (pixels) or not rasterized (not resolved into pixels).
- a conventional one Printing methods are used, for example, a planographic printing process, such as the offset printing process.
- the at least one absorptive pattern layer containing the at least one absorptive spectral filter means can likewise be screened or unscreened, for example with a planographic printing process, such as the offset printing process, or with a digital printing process, such as the inkjet printing process.
- the at least one luminescent pattern layer may preferably be located in one or more luminescent pattern planes underlying below one or more absorptive pattern planes in which the at least one absorptive pattern layer is formed. The reverse arrangement is also possible in principle.
- An absorptive pattern formed by the at least one absorptive pattern layer may be, for example, a serial number or a shadow image of the document holder.
- the method it is also possible, in each case preferably, to form different patterns with the at least one luminescent agent and the at least one absorptive spectral filter means in different sample planes, which are superimposed on one another but not in register, at least one with the at least one luminescent agent a luminescent pattern layer formed of a luminescent agent forms a luminescence pattern representing, for example, a first information, and at least one absorptive pattern layer formed with the at least one absorptive spectral filter means forming an absorptive pattern representing, for example, a second information, which are superimposed, ie superimposed.
- the at least one luminescent pattern layer may preferably lie in one or more first pattern planes, which are arranged below one or more second pattern planes, in which the at least one absorptive pattern layer is formed.
- the reverse arrangement is also possible in principle.
- the luminescent pattern layer and / or the absorptive pattern layer may be formed by any of the above printing methods, for example, a planographic printing method such as the offset printing method or a digital printing method such as the inkjet printing method.
- a luminescent pattern formed by the at least one luminescent pattern layer may be a shadow image of the document holder, while an absorptive pattern formed by the at least one absorptive pattern layer may be, for example, a serial number, the name of the document holder, a crest, or other pattern.
- the above embodiments are also possible in variants in which the pattern is formed instead of by pattern elements in a (non-screened) not formed by pattern elements. It is particularly preferred if the luminescence pattern elements and the absorptive pattern elements are each arranged on the same surface on or in the product, and very particularly preferably directly in contact with one another, namely one on top of the other.
- the luminescent pattern elements may in this case be arranged on the absorptive pattern elements, ie the absorptive pattern elements lie between the luminescence pattern elements and the carrier on which the pattern elements are applied, or the absorptive pattern elements may be applied to the luminescent pattern elements.
- Be arranged pattern elements, ie, the luminescence pattern elements lie between the absorptive pattern elements and the carrier.
- the luminescent pattern elements and the absorptive pattern elements are formed in this case on the surface of a product layer, which is covered by a further product layer after their formation, and the stack formed is then further processed under laminating to a laminate, so that the luminescence and absorptive pattern elements are finally inside the laminate, the luminescent pattern elements and the absorptive pattern elements are generally fused under the conditions prevailing during the lamination (in particular at elevated temperature, elevated pressure) to form a uniform layer.
- the luminescent means forming the luminescent pattern elements and the absorptive spectral filter means forming the absorptive pattern elements diffuse into the sheet material of the product and form a common pattern element layer there.
- the luminescent pattern elements may first be applied to the substrate and the absorptive pattern elements then formed on the luminescent pattern elements.
- the absorptive pattern elements may first be applied to the substrate and the luminescent pattern elements thereafter formed on the absorptive pattern elements.
- the luminescent pattern element layer and the absorptive pattern element layer can be formed on different superimposed surfaces (in different layers). different levels), for example on the two surfaces of the same product layer or on surfaces of different product layers.
- the luminescent agent can be formed as a negative pressure on a first surface and the absorptive spectral filter medium can be individualized by means of inkjet printing (inkjet printing) in an overlying plane (on a second surface).
- inkjet printing inkjet printing
- the at least one luminescent agent and the at least one absorptive spectral filter means are present in a single pattern-forming layer, further, when the at least one luminescent agent luminescence pattern elements located on the substrate below and the at least one absorptive spectral filter means on top Absorptive pattern elements form, furthermore, if, conversely, the at least one absorptive spectral filter means on the support material below absorptive pattern elements and the at least one luminescent form luminescence pattern elements above, as well as in the cases not rasterized, ie non-patterned pattern layers, the radiation incident on the pattern elements or non-patterned pattern layers, namely light in the visible spectral region, is filtered by the absorptive or non-patterned absorptive pattern layers, so that the pattern is exposed to visible light under normal illumination conditions the same way as under under suitable lighting conditions for the luminescence.
- the pattern elements may be in a single pattern element layer containing both the at least one phosphor and the at least one spectral absorptive filter.
- the luminescent and absorptive spectral filter means used for the formation of the pattern elements may be contained in a common material which is applied to the carrier material, optionally in turn produced in several color separations one above the other. Therefore, the formed pattern element layer is homogeneous and not composed of two layers.
- the pattern element layer containing the at least one luminescent agent and the at least one absorptive spectral filter means can also be formed by first separately producing two adjacent layers and then fusing both layers together, in particular at elevated temperature, for example laminating the carrier layer with further layers ,
- the above-mentioned also apply to the case of non-screened pattern layers of luminescent and absorptive spectral filter means.
- the pattern formed with the at least one absorptive spectral filter means and the pattern formed with the at least one luminous means are superimposed; they are in registration and at least register exactly one above the other.
- the absorptive pattern can be individualizing, for example personalizing, for the value and / or security product and not individualizing the luminescence pattern.
- the luminescence pattern can also be individualizing and the absorptive pattern can not be individualizing.
- both patterns are individualizing.
- both patterns may not be individualizing.
- the carrier material to which the at least one luminescent agent and the at least one absorptive spectral filter agent are applied is part of the valuable and / or security product.
- it is a single carrier material layer which is collated with further carrier material layers in a stack and then connected to these other layers, for example in a lamination process to form the security and / or security document.
- the carrier material can also be an already largely finished value and / or security product, on the one or both surfaces of which the security feature is applied.
- the carrier material may additionally be coated with a protective lacquer so that the security feature lies inside the finished product and thus can not be easily manipulated by a third party.
- the valuable and / or security product may be formed from a polymer selected from a group comprising polycarbonate (PC), in particular bisphenol A polycarbonate, polyethylene terephthalate (PET), derivatives thereof, such as glycol modified PET (PETG), Polyethylene naphthalate (PEN), polyvinyl chloride (PVC), polyvinyl butyral (PVB), polymethyl methacrylate (PMMA), polyimide (PI), polyvinyl alcohol (PVA), polystyrene (PS), polyvinylphenol (PVP), polypropylene (PP), polyethylene (PE ), thermoplastic elastomers (TPE), in particular thermoplastic polyurethane (TPU), acrylonitrile-butadiene-styrene copolymer (ABS) and their derivatives.
- PC polycarbonate
- PET polyethylene terephthalate
- PEN glycol modified PET
- PEN Polyethylene naphthalate
- PVC polyvinyl chloride
- PVB polyviny
- the product can also be made of several of these materials. It preferably consists of PC or PC / TPU / PC.
- the polymers may be either unfilled or filled. In the latter case they are preferably transparent or translucent. If the polymers are filled, they are opaque.
- the above information relates both to films to be bonded together and to liquid formulations applied to a precursor, such as a resist.
- the product is made from 3 to 12, preferably 4 to 10, films (including the carrier of the data transmission device).
- a laminate formed in this way can finally be coated on one or both sides with a protective lacquer. Overlay layers formed in this way protect an underlying security feature and / or give the document the required abrasion resistance.
- the security feature is preferably formed on one of the inner layers.
- the security and / or security document can have, in addition to the security feature according to the invention, further security features, such as guilloches, micro-writing, holograms, kinegrams and the like.
- the document may also comprise electronic components, for example an RFID circuit with antenna and RFID microchip, electronic display elements, LEDs, touch-sensitive sensors and the like.
- the electronic components may be hidden between two opaque layers of the document.
- FIG. 1 shows a value and / or security document with a face image of the document holder in a perspective view
- FIG. 2 shows an arrangement for verifying the authenticity of the value and / or security document of FIG. 1 under illumination conditions with light in the visible spectral range (a); FIG. under illumination conditions with UV light (b);
- Fig. 3 shows embodiments of the arrangement of absorptive and luminescent pattern elements in schematic sectional views: (a) with overhead luminescent pattern elements; (b) with overhead absorptive pattern elements; (c) with
- Pattern elements which simultaneously contain at least one absorptive spectral filter means and at least one luminescent agent; (d) as (c), but inside between two product layers;
- Fig. 4 shows a pattern element with an overhead luminescent pattern element in schematic sectional views for illustrating the ratios of light absorption or emission: (a) when viewed with light in the visible spectral range; (b) when viewed under luminescence conditions;
- Fig. 5 shows a pattern element with a underlying luminescent pattern element in schematic sectional views for illustrating the ratios of the light absorption or emission: (a) when viewed with light in the visible spectral range; (b) when viewed under luminescence conditions;
- Fig. 6 shows two different pattern elements, each with an overhead absorptive pattern element in schematic cross-sectional views to illustrate the ratios of light absorption or emission: (a) when viewed with light in the visible spectral range; (b) when viewed under luminescence conditions;
- Fig. 7 shows an arrangement of an inkjet printer with five print heads and a product carrier with pattern elements in a schematic view
- Fig. 8 shows the structure for inkjet printing of the absorptive spectral filter means and the luminescent agent in a schematic representation.
- the security and / or security document 100 shown in FIG. 1 is an ID card made, for example, by laminating multiple product layers of polycarbonate.
- This ID card has on its top 101 shown here in fields 102, 103, 104 various information about the cardholder, including a facial image of this cardholder on.
- the facial image is a security feature 200 and represents a pattern 201 of pattern elements which in accordance with the invention consist of absorptive pattern elements 210 and luminescence pattern elements 220 (in a construction approximately as shown in FIG. 6a ) are formed.
- the facial image is formed by a printing method such as an inkjet method.
- Printer D for example, in addition to the printheads for the colors for cyan (C), magenta (M), yellow (Y) and key (K) have a further print head (L), with which the luminescence pattern elements are printed.
- a device suitable for this purpose is shown in FIG. 7.
- An advantage of this approach is that no adjustment step is needed and the manufacturing time is exceptionally short.
- the printer may also have only four printheads C, M, Y, K, each of the four inks being in the form of a respective absorptive spectral filter means having a luminescent agent L in admixture, all inks containing the same luminescent agent.
- the upper side of the card has subsequently been coated with an overlay layer of an abrasion-resistant material, for example made of PET or a protective lacquer (not shown).
- an abrasion-resistant material for example made of PET or a protective lacquer (not shown).
- the document 100 For the verification of the document 100, it is illuminated on the one hand under normal illumination with a substantially white light source VIS (FIG. 2a).
- VIS substantially white light source
- the face image 200 appears colored under these lighting conditions and of course reproduces the image of the document holder.
- the ID card can also be examined under lighting conditions in which it is illuminated exclusively with UV excitation radiation, i. with the exception of the luminescence, the illumination space is completely or at least substantially dark.
- a UV light source UV which emits, for example, electromagnetic radiation at 365 nm, serves for this purpose.
- the facial image also appears colored under these illumination conditions, namely luminescent (FIG. 2b).
- FIG. 3 there are shown several possibilities of forming the pattern elements 280 forming the pattern 201, which are formed by the at least one absorptive spectral filter means and the at least one luminescent means.
- the pattern consists of several pattern elements that together form the pattern perceived by the viewer. Instead of such a screened pattern this can also be formed not rasterized.
- the individual pattern elements can be formed in different ways on or in a carrier 110, for example printed on them:
- absorptive pattern elements 210 formed by the at least one absorptive spectral filter means are in the form of an absorptive pattern element layer 240 formed on the support 1 10.
- the pattern elements 280 are shown spaced apart in this and the following examples.
- the at least one absorptive spectral filter means conventional printing inks can be formed.
- a plurality of print separations with different printing inks can be produced and printed, which together result in the colored pattern, for example the facial image 200 of FIG.
- Luminescence pattern elements 220 which are formed by the at least one luminescence medium, are then produced in the form of a luminescence pattern element layer 250 on the absorptive pattern elements.
- the luminescent agent may contain, for example, at least one luminescent substance, for example rhodamine 6G or fluorescein or a mixture of these substances.
- One of the printing inks may additionally have a luminescence, for example with a magenta color.
- the luminescence pattern elements are formed largely registration on the absorptive pattern elements.
- the generated pattern 201 shows a colored representation both when illuminated with visible light (VIS) and when excited with UV light (UV).
- VIS visible light
- UV UV light
- first luminescence pattern elements 220 which are formed by the at least one luminescence medium, are produced in the form of a luminescence pattern element layer 250 on the substrate 110. Thereafter, absorptive pattern elements 210 in the form of an absorptive pattern element layer 240 are formed on the luminescence pattern elements. The absorptive pattern elements are also largely formed register-accurate on the luminescence pattern elements. With regard to the construction of the pattern elements 280 of absorptive and luminescent pattern elements and the selection of the luminescent means and absorptive spectral filter means, reference is made to the example of FIG. 3a.
- the generated pattern 201 shows a colored representation both when illuminated with visible light (VIS) and when excited with UV light (UV).
- VIS visible light
- UV UV light
- pattern elements 280 in the form of combination pattern elements 230 are formed on a support 110 forming a pattern element layer 260 formed by both the at least one phosphor and the at least one spectral absorptive filter means.
- the pattern elements are also generated in this case in several color separations.
- color material is used which contains in each case at least one luminescent agent and, depending on the color separation, one of a plurality of absorptive spectral filter means.
- the generated pattern 201 shows a colored representation both when illuminated with visible light (VIS) and when excited with UV light (UV).
- VIS visible light
- UV UV light
- a single pattern element layer 260 of pattern elements 280 also results, for example, when 10 each successive absorptive pattern element layers 240 and luminescent pattern element layers 250 (as shown in FIG. 3 a or 3 b) are formed on a product layer 1 and this product layer is then formed with a further product layer 1 10 'combined and further processed under the action of elevated temperature and elevated pressure to form a laminate.
- the luminescent means and absorptive spectral filter means diffuse into the adjacent product layers 110, 110 'and into each other, so that a single pattern element layer 260 of combined luminescent and absorptive pattern elements forms (FIG. 3d).
- FIG. 4 shows the conditions when irradiated with white light (VIS) (FIG. 4 a) and with UV radiation (UV), for example with narrow-band radiation at 312 nm (FIG. 4 b).
- the visible light is symbolized by the basic colors blue (b), green (g) and red (r).
- the at least one luminescent agent which forms this luminescence pattern element is completely or at least substantially radiation-transparent in the visible spectral range and also preferably non-scattering, therefore transparent (or optionally translucent) and colorless (or only slightly colored).
- the pattern element 280 therefore appears blue.
- Fig. 4b the conditions in a lighting exclusively with UV light (UV) are reproduced.
- the UV radiation entering the pattern element 280 produces in the overhead luminescence pattern element 220 approximately white luminescent light with the color components blue (b), green (g) and red (r).
- This radiation is emitted non-directionally and enters the underlying absorptive pattern element 210 where it is filtered: the red portion (r) and green portion (g) are absorbed in the absorptive pattern member while the blue portion (b) passes and is remitted , As a result, this pattern element appears blue due to the UV excitation.
- a bottom luminescent pattern element 220 and an overhead absorptive pattern element 210 each forming a luminescent pattern element layer 250 and an absorptive pattern element layer 240, respectively ( Figure 5).
- illumination with visible light (VIS) FIG.
- the red component (r) and the green component (g) are already absorbed in the uppermost absorptive pattern element, so that the pattern element 280 appears blue overall.
- UV radiation Figure 5b
- it passes through the absorptive pattern element.
- this is transparent to the UV radiation and as possible is not scattered.
- broadband visible luminescence radiation with a blue component (b), a green component (g) and a red component (r) is generated. Only the blue component of this radiation can pass through the overhead absorptive pattern element, since the green component and the red component are filtered out by the absorptive pattern element.
- FIG. 6 also shows the relationships with two different pattern elements 280, 280 ', which differ with respect to the spectral absorption of the absorptive pattern element 210, 210'.
- the luminescent pattern elements together form a luminescent pattern element layer 250
- the absorptive pattern elements together form an absorptive pattern element layer 240.
- the two luminescent pattern elements are formed with the same luminescent agent.
- different absorptive spectral filter means are in each of the two absorptive pattern elements.
- the uppermost left pattern element 280 has an absorptive pattern element 210 that absorbs the red portion (r) and the green portion (g) of visible radiation (VIS) that appears blue (b), and each right pattern element 280 'has the blue portion (b ) and the green part (g) absorbing absorptive pattern element 210 'so that this pattern element 280' appears red (r).
- This structure corresponds to that shown in Fig. 5.
- Fig. 6a the situation in the illumination and viewing of the pattern with visible light (VIS) is shown and in Fig. 6b with UV excitation radiation (UV). From the visible light (VIS) is shown and in Fig. 6b with UV excitation radiation (UV). From the visible light (VIS) is shown and in Fig. 6b with UV excitation radiation (UV). From the visible light (VIS) is shown and in Fig. 6b with UV excitation radiation (UV). From the visible light (VIS) is shown and in Fig. 6b with UV excitation radiation (UV). From the visible light (VIS) is shown and in Fig. 6b with UV excitation radiation (UV). From the visible light (VIS) is shown and in Fig. 6b with UV excitation radiation (UV). From the visible light (VIS) is shown and in Fig. 6b with UV excitation radiation (UV). From the visible light (VIS) is shown and in Fig. 6b with UV excitation radiation (UV). From the visible light (VIS) is shown and in Fig. 6b with UV excitation radiation (UV).
- the left pattern element 280 only the blue portion (b) remitted, while in the right pattern element 280 'is the red portion (r). Therefore, the left pattern element is blue under visible light illumination and the right pattern element is red.
- a corresponding image is produced under UV irradiation: the red component (r) and the green component (g) of the luminescent light are absorbed in the overhead left absorptive pattern element 210 so that only the blue component (b) of the luminescent light is emitted by the left pattern element 280, while in the overhead right absorptive pattern element 210 ', the blue portion (b) and the green portion (g) of the luminescent light are absorbed and only the red portion (r) of the luminescent light is emitted from the right pattern element 280'. Therefore, the pattern 201 generated by luminescence looks substantially the same as that obtained under visible light irradiation.
- a luminescent layer with a luminescent agent and an absorptive layer with an absorptive Spektralfiltermit- tel are formed by these are printed directly above the other on the same surface of a polymer film.
- the luminescent agent luminesces when excited with UV radiation approximately white.
- the two layers are produced by means of inkjet printing.
- the absorptive layer is formed on the first printed luminescent layer.
- Figs. 8A, 8B, 8C and 8D Different examples are shown in Figs. 8A, 8B, 8C and 8D.
- Each of the above (I) shows luminescent patterns formed with luminescent agents and absorptive patterns formed thereunder (II) with absorptive spectral filter means. At the bottom (III), the patterns printed on top of each other to form an overall pattern are shown.
- the first name of the document holder and a date in the luminescent color and its face image are printed with a conventional ink containing a spectral absorptive filter medium. Together, this results in an overlay of the first name of the document holder and the date with its face image, the
- First name and date only become visible when the image is irradiated with the UV radiation.
- the areas of the first name and the date that are not of the face are superimposed on the image, they appear with the original luminescent color of the luminescent agent, namely approximately white.
- the first name and the date also appear under luminescent lighting conditions with the color of the face image.
- a full-area field with the luminescent color and the face image of the document holder are printed with a conventional ink containing an absorptive spectral filter means. Together, this results in a superimposition of the field with the face image of the document holder, the field is only visible when the representation is irradiated with the UV radiation. In the areas of the field which are not superimposed by the facial image, it appears with the original luminescent color of the luminescent agent, namely approximately white. In the areas superimposed on the face image, the field appears under luminescent illumination conditions with the color of the face image.
- the face image of the document holder in the luminescent color and its face image are also printed over one another with a conventional printing ink containing an absorptive spectral filter means.
- the face image of the document holder when illuminated with a visible view in natural color distribution and when illuminated with UV radiation also appears with the natural color distribution.
- a bar pattern in the luminescent color and the face image of the document holder are printed with a conventional ink containing an absorptive spectrum filter means. Together, this results in a superposition of the bar pattern with the face image of the document holder, whereby the bar pattern is only visible when the image is irradiated with the UV radiation. In the areas of the bar pattern which are not superimposed on the face image, this appears with the original luminescent color of the luminescent agent, namely approximately white. In the areas superimposed on the face image, the bar pattern appears under luminescent lighting conditions with the color of the face image.
- the luminescent layer in the examples of Figure 8 may be implemented in either rasterized or non-rasterized printing. This pressure can also be achieved with a flat printing method, such as the offset printing method to be generated. Likewise, in these examples, the absorptive layer can be either screened or not screened. Preferably, at least the absorptive pattern is generated by a digital printing process, such as an inkjet process, to utilize its flexibility for personalizing patterns.
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- Credit Cards Or The Like (AREA)
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Abstract
Description
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DE102012218053.2A DE102012218053B4 (de) | 2012-10-02 | 2012-10-02 | Sicherheitsmerkmal, das Sicherheitsmerkmal enthaltendes Wert- und/oder Sicherheitsprodukt sowie Verfahren zur Herstellung des Wert- und/oder Sicherheitsprodukts |
PCT/EP2013/070456 WO2014053490A1 (de) | 2012-10-02 | 2013-10-01 | Sicherheitsmerkmal und das sicherheitsmerkmal enthaltendes wert- und/oder sicherheitsprodukt |
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EP2903835A1 true EP2903835A1 (de) | 2015-08-12 |
EP2903835B1 EP2903835B1 (de) | 2016-09-07 |
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US (1) | US9842451B2 (de) |
EP (1) | EP2903835B1 (de) |
DE (1) | DE102012218053B4 (de) |
WO (1) | WO2014053490A1 (de) |
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DE102016201709A1 (de) | 2016-02-04 | 2017-08-10 | Bundesdruckerei Gmbh | Wert- oder Sicherheitsprodukt, Verfahren zum Herstellen eines Vorproduktes und Verifikationsverfahren |
US10150323B2 (en) * | 2016-02-29 | 2018-12-11 | International Business Machines Corporation | Structure, system, method, and recording medium of implementing a directed self-assembled security pattern |
DE102016003967A1 (de) * | 2016-04-01 | 2017-10-05 | Giesecke+Devrient Currency Technology Gmbh | Datenträger mit Aufdruck |
DE102019113005A1 (de) | 2019-05-16 | 2020-11-19 | Bundesdruckerei Gmbh | Lumineszierendes Sicherheitselement |
DE102021002213A1 (de) | 2021-04-27 | 2022-10-27 | Giesecke+Devrient Mobile Security Gmbh | Sicherheitsmerkmal für ein Wertdokument, Wertdokument, Verfahren zur Herstellung eines Sicherheitsmerkmals und Verfahren zur Prüfung eines Sicherheitsmerkmals |
DE102022001450A1 (de) | 2022-04-26 | 2023-10-26 | Giesecke+Devrient Currency Technology Gmbh | Foliensicherheitselement und Datenträger mit Foliensicherheitselement |
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US3474027A (en) | 1967-06-19 | 1969-10-21 | Phillips Petroleum Co | Plural stages of sulfur removal |
ES2281921T3 (es) | 1998-07-20 | 2007-10-01 | Maurer Electronics Gmbh | Procedimiento para grabar imagenes mediante radiacion en una capa radiosensible, en especial para grabar con laser. |
DE19860093B4 (de) | 1998-12-23 | 2008-10-09 | Giesecke & Devrient Gmbh | Echtheitsmerkmalskombination für Wertdokumente |
DE19906388A1 (de) | 1999-02-16 | 2000-08-24 | Bundesdruckerei Gmbh | Verfahren und Vorrichtung zur Personalisierung und Verifizierung von Identitäts- und Sicherheitsdokumenten sowie ein damit verwendbares Identitäts- und Sicherheitsdokument |
DE19907940A1 (de) | 1999-02-24 | 2000-08-31 | Bundesdruckerei Gmbh | Verfahren zur Herstellung von mehrschichtigen Sicherheitsprodukten und ein nach dem Verfahren hergestelltes Sicherheitsprodukt |
FR2858582B1 (fr) * | 2003-08-04 | 2005-09-30 | Banque De France | Procede de realisation d'un motif luminescent a partir de points sans recouvrement, et motif luminescent correspondant |
DE102004021248A1 (de) | 2004-04-30 | 2005-11-24 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
US8110281B2 (en) | 2004-07-02 | 2012-02-07 | 3Dtl, Inc. | Systems and methods for creating optical effects on media |
DE102007018450B4 (de) | 2007-04-19 | 2017-08-17 | Bundesdruckerei Gmbh | Laminiertes Sicherheitsdokument |
DE102007035592B4 (de) | 2007-07-30 | 2023-05-04 | Osram Gmbh | Temperaturstabiler Leuchtstoff, Verwendung eines Leuchtstoffs und Verfahren zur Herstellung eines Leuchtstoffs |
WO2009018616A1 (en) * | 2007-08-07 | 2009-02-12 | Prime Genetics | Spectral multilayer authentication device |
DE102008012423A1 (de) | 2007-10-31 | 2009-05-07 | Bundesdruckerei Gmbh | Verfahren zur Herstellung eines Polymerschichtverbundes und Polymerschichtverbund mit farbigem Sicherheitsmerkmal |
DE102008012426A1 (de) | 2007-10-31 | 2009-05-07 | Bundesdruckerei Gmbh | Sicherung von Dokumenten |
US8355169B2 (en) * | 2010-08-23 | 2013-01-15 | Ecole Polytechnique Federale De Lausanne (Epfl) | Synthesis of authenticable luminescent color halftone images |
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- 2013-10-01 EP EP13773685.6A patent/EP2903835B1/de active Active
- 2013-10-01 WO PCT/EP2013/070456 patent/WO2014053490A1/de active Application Filing
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DE102012218053B4 (de) | 2025-02-06 |
DE102012218053A1 (de) | 2014-01-30 |
US20150339873A1 (en) | 2015-11-26 |
EP2903835B1 (de) | 2016-09-07 |
US9842451B2 (en) | 2017-12-12 |
WO2014053490A1 (de) | 2014-04-10 |
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