CN103492191A - Activatable security element - Google Patents

Abstract

According to the present invention, a security element for protecting valuable documents and/or secure documents, and a method for manufacturing the same, are realized, wherein the security element can be manufactured efficiently, but can be manufactured and transmitted with significantly reduced security requirements. The security element comprises a matrix and at least one characteristic substance, which emits and/or absorbs and/or scatters light when appropriately stimulated by electromagnetic radiation. The security element has features suitable for verifying the valuable documents and/or secure documents, as well as a first color state and a second color state different from the first color state, wherein the features suitable for verifying the valuable documents and/or secure documents are the emission and/or absorption and/or scattering of light by the security element. Furthermore, the security element can be irreversibly activated from the first color state to the second color state. Only the second color state is the color state suitable for verification.

Description

Activatable Secure Element

Technical Field of the Invention

The subject of the invention is a security element, such as a colored fiber, for protecting value documents and/or security documents, wherein the security element has at least one luminescent and/or light-absorbing and/or light-scattering characteristic In addition, the invention relates to a method for producing a security element, a value document and/or a security document comprising a security element and a method for their production.

Background technique

A large number of security elements for protecting value and/or security documents are known from the prior art. Especially colored fibres, metal sheets, threads or chips are used. The security element is introduced into the document during manufacture and can be recognized on the basis of its shape in the finished document. For example, light-emitting colored fibers are embedded in banknotes. This is not noticeable or hardly noticeable when illuminated with natural light. With the aid of UV light, the colored fibers can be clearly identified due to the luminescence of the characteristic substances contained in the colored fibers.

A production method for producing garden-forming (hofbildend) colored fibers is known from DE371948A. During the drying process of a paper embedded with such colored fibers, the colored fibers develop a color and form a garden around the colored fibers so that the removal of the fibers can be easily identified.

The security element is advantageous when it can be manufactured separately from the document and efficiently. Through the described insertion during the production of the document, a spatially structured arrangement of the security element can be produced, which is regular in the case of threads and random in the case of colored fibers. The spatial structure setting can be easily verified and technically difficult to adjust in the case of UV stimulation.

Problems according to the prior art and tasks of the invention

It has proven to be disadvantageous that although the security element can be produced efficiently—for example, at a supplier—the security element must also be secured at the document manufacturer and during transport to the document manufacturer. These requirements result in increased costs. In particular, it is possible for a counterfeiter to use a stolen security element for the falsification of documents. Furthermore, the security risk is increased by the fact that more people know the technical specifications of the secure element, not only at the secure element manufacturer (supplier) but also at the document manufacturer.

It is therefore the object of the present invention to realize a security element which can be produced efficiently, but which can be produced and transported with significantly reduced safety requirements.

DESCRIPTION OF THE INVENTION AND PREFERRED EMBODIMENTS

The task is to be achieved by a security element according to claim 1 and a method for its production according to claim 14 and by a value document and/or a security document according to claim 15 and by a method according to claim 16 described for the fabrication method address. Preferred embodiments of the invention are described in the dependent claims.

The security element according to the invention is used for protecting value documents and/or security documents. The security element comprises a matrix and at least one characteristic substance which, when suitably excited by means of electromagnetic radiation, emits light and /or absorb light and/or scatter light eg in the ultraviolet spectral range, infrared spectral range and/or visible spectral range. The security element has a feature suitable for authenticating the value document and/or the security document, which feature is the luminescence and/or light absorption and/or light scattering or diffuse reflection of the security element. The security element has a first color state in which at least one characteristic substance emits light and/or absorbs light and/or scatters light and a second color state different from the first color state, in which second At least one characteristic substance in the color state emits light and/or absorbs light and/or scatters light. Therefore, it is easy to distinguish between the two states when validating a file. By activation, the security element can be irreversibly switched (activatable) from a first color state to a second color state, wherein the first color state has no (set) characteristics suitable for authentication. In contrast, the second color state of the security element is a state suitable for or provided for authenticating documents. This means that only the luminescence and/or light absorption and/or light scattering of the security element in the second color state allows the detection of value documents and/or security documents on or in which the security element is applied or inserted. The verification of the authenticity of the secure element and thus detects and thus prevents forgery or falsification of the secure element or at least makes it considerably more difficult. That is to say, the authentication method and possibly the devices used therefor are designed in such a way that they indicate the authenticity of the document only when the security element is in the second color state.

This achieves that first a security element is produced which has a first luminescence and/or light absorption and/or light scattering in a first color state which is not provided for authenticating a document. However, it can be recognized that the first luminescence and/or light absorption and/or light scattering in the first color state differs from the second luminescence and/or light absorption and/or light scattering in the second color state, said The second color state shows the authenticity of the document, so that the security element can be manufactured and transported without special security measures before it is activated to the second color state set for verification, because the security element is in the The first color state is not yet suitable for application in the file. By enabling the verification of the authenticity of the document containing the security element only in the second color state of the security element, it is ensured that even if the security element is lost in the first color state, the use can be successfully prevented It is used to reconstruct files with such a security element in the second color state.

In a preferred embodiment of the invention, the first color state is distinguished from the second color state by the energy of luminescence and/or light absorption and/or light scattering, that is to say before and after activation the luminescence and/or light absorption And/or the color (frequency, wavelength) of light scattering is different. As an alternative or in addition to this, the energy of the excitation light required for luminescence/light absorption/light scattering, that is to say the absorption site of the security element can also differ from one another. For example, the security element can emit light in the visible light range, so that the first color state can be given, for example, by emitting red light and the second color state by emitting green light. Alternatively, the security element can also emit light and/or absorb light and/or scatter light in the ultraviolet spectral range or in the infrared spectral range. The two states can also be distinguished by the frequency or wavelength of the (re)emitted radiation. Basically, the color states can differ in the composition of the spectrum of the (re)emitted radiation. Furthermore, the emission/absorption/scattering in the first color state can also be substantially in the first spectral range (ultraviolet, visible and/or infrared) and the emission/absorption/scattering in the second color state It can also be in the same spectral range or in another spectral range (ultraviolet, visible and/or infrared) or also additionally in another spectral range (ultraviolet, visible, infrared). Furthermore, it is also possible to differentiate the two color states only by the intensity of the luminescence/absorption/scattering, for example having a low intensity in the first color state and a high intensity in the second color state.

According to the invention, the luminescence/light absorption/light scattering can basically be any type of (re)emitted radiation, wherein the radiation emitted by luminescence is preferably a photoluminescence (excitation by photons). A distinction can be made between fluorescence and phosphorescence.

The two color states of the security element are preferably given by the color states of the characteristic substance contained in the security element. If the security element contains a single luminescent and/or absorbing and/or scattering characteristic substance, the two color states of the security element can be given by the two color states of the single characteristic substance. In particular, different crystal structures are conceivable as the first and second color states of the characteristic substance or dimers as the first color state and monomers as the second color state. However, the security element may contain more than one characteristic substance which contributes to the luminescence and/or light absorption and/or light scattering of the security element in at least one of the two color states of the security element .

Furthermore, according to the invention, a security element is understood to be an element which can be produced as a separate physical object and which can be integrated into a value and/or security document during production. In particular, colored fiber metal sheets, threads or chips are understood here. Alternatively, however, this can also be a component of the value document and/or security document, which is not yet present in the document prior to its formation and which is only formed in the document during the production process, for example, on the document level imprint. The security element can be, for example, a film or a film composite into which at least one characteristic substance according to the invention is incorporated during production or which is subsequently applied, for example, by printing techniques. on the compound. Furthermore, it also relates to a substrate, for example paper, into which the colored fiber metal sheets, threads or chips according to the invention are embedded.

以及其衍生物、另外包含这些材料的复合薄膜以及另外包含上述材料的杂化材料制成。特别优选的是至少部分地由聚碳酸酯制成的有价文件和/或安全文件。借助增加的压力和增加的温度实现层压。通常在180℃至210℃和高于5bar的压力的情况下在1秒至1小时内由PC制造文件。对于单卡层压普遍的是短的周期时间，对于多重用途的堆叠层压普遍的是长的周期时间。Value and/or security documents are usually produced by laminating films. The film may be made of the same or different materials, especially polycarbonate (PC), especially bisphenol A polycarbonate, polyethylene terephthalate (PET) and derivatives thereof— Such as ethylene 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 elastomer (TPE), Especially thermoplastic polyurethane (TPU), acrylonitrile-butadiene-styrene (ABS), paper,

and derivatives thereof, composite films additionally comprising these materials, and hybrid materials additionally comprising the aforementioned materials. Particularly preferred are value and/or security documents at least partially made of polycarbonate. Lamination is achieved by means of increased pressure and increased temperature. Files are typically produced from PC within 1 second to 1 hour at 180°C to 210°C and pressure above 5 bar. Short cycle times are prevalent for single card lamination and long cycle times are prevalent for multi-use stack lamination.

In a preferred embodiment of the invention, the matrix of the security element is made of polyamide. Polyamides are especially suitable for the manufacture of colored fibers by extrusion at 250°C to 280°C. To this end, luminescent and/or light-absorbing and/or light-scattering characteristic substances are added to the polyamide present in pellet form, the pellets are heated to 250° C. to 280° C. and pressed. A uniform distribution of the characteristic substance can thus be achieved.

In another preferred embodiment of the invention, the security element requires a processing time of at least 8 hours for activation from the first color state to the second color state. Advantageously, realize a kind of security element, in described security element only by at least 2 hours period, better at least 4 hours period, even better at least 8 hours period the activation process takes place from the first An irreversible changeover from the color state to the second color state, since a random activation of the security element from the first color state to the second color state is thereby avoided. The security element is then only known to those persons who are involved in the activation and production of the value and/or security document. A counterfeiter would also assume that a security element produced in the first color state cannot be used to reconstruct a document containing a security element in the second color state. Obviously, an upper limit for the activation duration is also practical, eg 1000 hours. Shorter times are naturally better, allowing efficient production of the security element and the documents produced by means of the security element, for example up to 500 hours, preferably up to 100 hours, further preferably up to 30 hours and still further preferably up to 15 hours. Hour.

In another preferred embodiment of the invention, the security document is irreversibly activatable without external pressure, that is to say, the activation from the first color state to the second color state needs to include the possibility of avoiding external pressure. Activation condition. It is therefore advantageous to choose an activation which can be carried out without external pressure. For example, it is thus possible to use characteristic substances which can be converted into a first color state when pressure is applied, for example, as prevails when pressing colored fibers. In the absence of external pressure, in particular heating, the color state switches over a long period of time to a second color state which is thermodynamically stable in the absence of external pressure, for example, in a characteristic substance In the case of transitions between two crystalline states (crystal structures) or between aggregated states (monomer/dimer/trimer etc.).

In another preferred embodiment of the invention, the security element is activatable by heat treatment, that is to say the security element requires heat treatment (treatment at an increased temperature relative to room temperature) for activation from the first color state to The second color state.

In a further preferred embodiment of the invention, the security element can be activated irreversibly at a temperature of at least 40° C. and at most 100° C. In particular, the security element can be irreversibly activated at a temperature of at least 50° C. and at most 90° C. and particularly preferably at a temperature of at least 50° C. and at most 85° C., that is to say a heat treatment at a temperature in the abovementioned temperature range is required for activation.

In another preferred embodiment of the invention, the security element can be activated irreversibly by means of electromagnetic radiation, in particular ultraviolet radiation, that is to say the security element has the property that for its irreversible activation it requires the aid of electromagnetic radiation, in particular exposure to ultraviolet radiation. The security element preferably requires UV-A radiation (400 to 320 nm), particularly preferably irradiation with 365 nm, for activation. Activation by means of UV-B or UV-C radiation is not preferred, since such radiation could alter the substrate and thus impair the durability of the value and/or security document.

In a further preferred embodiment of the invention, the security element can be irreversibly activated by treatment with chemical agents, ie the security element has the property that treatment with chemical agents is required for irreversible activation. For example, water, especially in the form of water vapor, may be suitable as chemical agent. Therefore, activation can be achieved under a water vapor atmosphere. A water vapor atmosphere is understood to mean an air humidity of at least 60%, preferably at least 80%.

In another form of chemical activation, the colorless precursor is converted into a dye. Mention is exemplified by the manufacture of crystal violet, in which a colored triphenylmethane dye is produced from a colorless intermediate stage by acidification. For this purpose, the security element can be exposed to a gaseous or vaporous atmosphere comprising, for example, hydrogen chloride, formic acid and/or acetic acid.

In another preferred embodiment of the invention, activation can be carried out at a temperature of at least 40° C. and at most 100° C. and in a water vapor atmosphere. Activation is achieved in particular at a temperature of 85° C. and a relative air humidity of 85%. In these cases, the security element is chosen such that activation only takes place under the above-mentioned conditions.

It is also possible to activate the security element under conditions corresponding to combinations of the above conditions. In particular, the security element can be irreversibly activated by thermal treatment and/or treatment with electromagnetic radiation and/or treatment with chemical agents.

The security element can contain a unique characteristic substance suitable for verifying the authenticity of the value and/or security document equipped with the security element. Alternatively, multiple characteristic substances may also be included. At least one of the characteristic substances in the security element according to the invention is preferably present in two mutually different color states, wherein activation from the first color state into the second color state is irreversible. If several characteristic substances are present in the security element, the individual characteristic substances or all characteristic substances can each have two color states, that is to say they emit light and/or absorb light and/or scatter light differently in the two states , or each or all of the characteristic substances may have two color states, where the relevant one emits light and/or absorbs light and/or scatters light in one state and does not in the other state The light-emitting and/or light-absorbing and/or light-scattering, or the various characteristic substances can also remain completely unchanged when the security element is activated.

For example, an irreversibly activatable first characteristic substance has a first state and a second state in which the substance has a first luminescence and/or light absorption and/or light scattering in which The substance in the second state has a second luminescence and/or light absorption and/or light scattering characteristic different from the first luminescence and/or light absorption and/or light scattering characteristics. The difference between the emission/absorption/scattering of the characteristic substance in these two color states can be as above for the security element itself, for example by the energy of emission/absorption/scattering in the first color state and in the second color state and/or given by the difference in intensity between the first color state and the second color state. Alternatively, the first activatable characteristic substance may have a first state in which the substance exhibits luminescence and/or light absorption and/or light scattering, and a second state in which Characteristic substances exhibit no luminescence and/or light absorption and/or light scattering. Alternatively, the first activatable characteristic substance may have a first state in which the substance does not exhibit luminescence and/or light absorption and/or light scattering, and a second state in which The substances described in exhibit luminescence and/or light absorption and/or light scattering. In the last two cases described, at least one further second characteristic substance is preferably present in the security element, which likewise switches from the first color state to the second color state under the same activation as the first characteristic substance. , so that the security element can adopt two different color states.

Thus, a second characterizing substance can also be contained in the security element in addition to the first characterizing substance. Correspondingly, the second characteristic substance can also be activated and, like the first characteristic substance, have different states with regard to luminescence/light absorption/light scattering, wherein the corresponding differences of the two characteristic substances do not have to change identically : For example, the first characteristic substance may exhibit a first luminescence and/or light absorption and/or light scattering in a first state and a second luminescence and/or light absorption and/or light scattering in a second state and a second The characteristic substance exhibits no luminescence and/or light absorption and/or light scattering in the first state and exhibits a luminescence and/or light absorption and/or light scattering in the second state, or vice versa. Other combinations are possible. Alternatively, the second characteristic substance can also be provided in such a way that it does not have two different color states. This means that no change of the second characteristic substance occurs when the security element is activated. Accordingly, the second characteristic substance can either (re)emit or absorb a defined constant luminescence/absorption/scattering light independently of the activation of the security element, or the second characteristic substance does not emit or absorb any luminescence/absorption at all. light/scattered light. In addition, third, fourth and further characteristic substances can also be contained, which in turn can either be present in both color states or not in each case.

The mixing of all characteristic substances in the security element results in an overall effect in two color states (composite color of the security element), which is composed of a single effect (color of the corresponding characteristic substance) in the corresponding state.

If the security element is such that it comprises a security feature which is spatially resolved and encodes at least one piece of information, for example a personalized printed image in or on the value document and/or the security document, other options can be selected for the design of the security element . For example, the security element may embody first information in a first color state and second information in a second color state. For example, it can be detected by means of the first information that the security element is not yet in an activated state, ie must be counterfeit. For example, the security element can consist of two printed images, wherein the first printed image emits light and/or absorbs light and/or scatters light under authentication conditions, not only when the security element has not yet been activated, but also Both emit light and/or absorb light and/or scatter light when the security element has been activated, whereas the second printed image emits light and/or absorbs light and/or scatter light only in the case of authentication when the security element has been activated, whereas, If the security element has not been activated, no light is emitted and/or light is absorbed and/or light is scattered. For example, the first printed image may be a first sequence. The two printed images together may be a second number sequence different from the first number sequence. Where the correct sequence is identified, the document is authenticated as authentic, whereas the sequence given by the first printed image alone proves that the document is a forgery. In this case, additional information in the document can be used for the verification, which, if additionally included, enables the authenticity or forgery of the document to be recognized by means of a suitable algorithm. In another embodiment, the color change upon activation of the security element can be directly associated with a coded message: for example, the document might glow green before activation and red after activation. In this case the security element consists, for example, of the printed word "rot". The printed word "rot" appears in green before activation and in red after activation.

In a further preferred embodiment of the invention, at least one characteristic substance is introduced into the matrix by means of extrusion. As shown above with the example of polyamide, this has the advantages of uniform distribution of the characteristic substance in the matrix and efficient production.

染料(金属络合染料、BASF、DE)、

染料(酞青染料、BASF、DE)、铬黄颜料、钼酸盐红色颜料、醛连氮黄和三苯甲烷染料。特别优选苯并恶嗪酮和其衍生物以及水杨酸和其衍生物。在EP0314350A1中描述的、根据那里的化学式I所述的化合物连同取代基和其他替换物(Platzhaltern)的所有公开的变型例，和尤其是在文件的第12页上借助那里的化学式I和II连同后面的取代物的表格明确提到的化合物，此外还有在WO2006/036790A1中根据那里的化学式I提到的芳脲基苯并恶嗪酮连同取代物和其他替换物的所有公开变型例，以及在WO2009/045988A2中根据那里的化学式I提到的磺酰脲基苯并恶嗪酮以及取代物和其他替换物的所有公开变型例，被列为苯并恶嗪酮的衍生物的示例并且收录在本申请的公开内容中。In another preferred embodiment of the present invention, the characteristic substance is selected from the following group: said group includes benzoxazinone and its derivatives and salicylic acid and its derivatives, xanthene dyes - such as fluorescein and Rhodamine 6G,

Dyes (metal complex dyes, BASF, DE),

Dyes (phthalocyanine dyes, BASF, DE), chrome yellow pigments, molybdate red pigments, alzine yellow and triphenylmethane dyes. Particular preference is given to benzoxazinone and its derivatives and salicylic acid and its derivatives. All disclosed variants of the compounds described in EP0314350A1 according to the compounds of the formula I there together with substituents and other substitutions (Platzhaltern), and especially on page 12 of the document by means of the formulas I and II there together with the compounds mentioned explicitly in the following table of substitutions, in addition to all disclosed variants of the arylureidobenzoxazinones mentioned in WO 2006/036790 A1 according to the formula I therein together with substitutions and other alternatives, and In WO 2009/045988 A2 all disclosed variants of the sulfonylurea benzoxazinones mentioned according to the formula I there, as well as substitutions and other alternatives, are listed as examples of derivatives of benzoxazinones and included in the disclosure of this application.

As already described above, in a further preferred embodiment of the invention the security element has at least one second luminescent and/or light-absorbing and/or light-scattering characteristic substance, wherein the at least one A second characteristic substance cannot be changed by activation. Only by way of example are YVO ₄ :Eu ³⁺ and YVO ₄ :Tb ³⁺ listed as suitable second light-emitting and/or light-absorbing and/or light-scattering characteristic substances. Basically, most inorganic dyes are stable under these activation conditions and thus unalterable.

If a stable second luminescent and/or light-absorbing and/or light-scattering characteristic substance is used, a characteristic material which is destroyed when the security element is irreversibly activated can be used as the first luminescent and/or light-scattering characteristic substance. A characteristic substance that absorbs and/or scatters light. For example, the first characteristic substance is a characteristic substance that is thermally unstable and/or unstable with respect to irradiation with electromagnetic radiation. The first signature substance is irreversibly damaged upon activation. It is more advantageous to use the first characteristic substance in a concentration in which the luminescent and/or absorbed light and/or scattered light emitted by the first characteristic substance is stronger than the luminescent radiation and/or scattered radiation and/or absorbed light of the second characteristic substance At least an order of magnitude. Authentication of the second characteristic substance is therefore not possible or technically difficult without irreversible damage to the first characteristic substance and thus without activation of the security element.

Furthermore, the security element can have two substances in the first color state, which react under activated conditions to become a light-emitting and/or light-absorbing and/or A characteristic substance that has the property of scattering light. The two substances are therefore decomposition products of the characteristic substances formed upon activation.

A value document and/or a security document according to the invention has at least one security element according to the invention.

Examples of documents of value and/or security are: travel passports, identity cards, driver's licenses, car licenses, vehicle licenses, visas, check and credit cards, cheques, company documents, proofs of title, membership cards, gift certificates and purchase Warrants and (game) chips. Particularly preferably, the document of value and/or security document corresponds to the data pages of the document in ID-1 or ID-2 format according to ISO7810 and in ID-3 format according to ISO7810.

The method for producing a security element according to the invention comprises the following steps:

a) providing the security element in a first color state and

b) An irreversible transition of the security element from the first color state to the second color state by activation.

The described preferred embodiments of the security element, in particular with regard to irreversible activation, can be applied correspondingly to the method.

The method according to the invention for producing a value document and/or a security document having a security element in a second color state comprises the following steps:

a) providing the security element in the first color state and, if necessary, transporting the security element in the first color state to the place of manufacture of the value document and/or the security document,

b) an irreversible transition of the security element from a first color state to a second color state by activation and

c) Integrating the security element in the second color state into the document of value and/or the security document.

Preferably, the method steps are carried out in the specified order. At least one further method step can be carried out in each case between the individual method steps.

Advantageously, the security element in the first color state can be produced efficiently in an unprotected area and the subsequent transport to the place of production of the value document and/or security document is also simplified because only after activation of the security element It is necessary to ensure the security of the production environment. An additional activation process step is advantageous, since only the security element and not the entire file is subject to activation load. If the security element is activated only in the finished document, the entire document material has to be subjected to, for example, thermal stress, and the service life of the document is thus reduced.

The invention is explained below on the basis of examples:

1. Example:

A polyamide pellet was added with a substituted benzoxazinone derivative as a luminescent feature substance and extruded at 280° C. to form colored fibers. The colored fibers emit white light. The colored fibers can be applied on top of the PC-film and laminated at 190°C for 60 minutes to form a file. White-emitting colored fibers can be observed in the file. In order to enable activation prior to the manufacture of documents, the colored fibers can be stored for 5 days at 85° C. and at 85% r.h. (relative humidity). The colored fiber then glows green. As mentioned above, this luminescence is also shown after the integration of colored fibers into a file.

2. Example:

A polyamide pellet was added with a substituted salicylic acid derivative as a luminescent feature substance and extruded at a temperature of 280° C. to form colored fibers. The colored fibers glow blue. Colored fibers can be applied to PC film and laminated at 190°C for 60 minutes into one file. Blue-emitting colored fibers can be observed in the file. In order to enable activation prior to the manufacture of documents, the colored fibers can be stored for 5 days at 85°C and 85% r.h. (relative humidity). The colored fiber then glows green. As mentioned above, this luminescence is also shown after the integration of colored fibers into a file.

3. Examples

A polyamide pellet was added with fluorescein as a luminescent characteristic substance and YVO ₄ :Tb ³⁺ as a second luminescent characteristic substance and extruded at a temperature of 280° C. into colored fibers. The colored fiber emits cyan light. Activation is achieved by means of irradiation with 365 nm for 24 hours. The colored fibers then glow red.

4. Examples

A polyamide pellet was added Rhodamine 6G as a luminescent characterizing substance and YVO ₄ : Tb ³⁺ as a second luminescent characterizing substance and extruded at 280° C. into colored fibers. The colored fibers are yellow-orange-light. Activation takes place by means of irradiation with 365 nm for 24 hours. The colored fiber then glows green.

染料和

染料作为能够在根据本发明的安全元件中使用的其他特征物质。此外，可借助在50至85℃下处理来激活的铬黄颜料和钼酸盐红色颜料(在增加的温度下分解，从而一种隐藏的染料变得可见)，以及可借助紫外线照射激活的醛连氮黄染料和三苯甲烷染料也适用。Listed only by way of example can be activated by means of UV radiation and / or 50 to 85 ° C

dye and

Dyes are further characteristic substances that can be used in the security element according to the invention. In addition, chrome yellow pigments and molybdate red pigments which can be activated by means of treatment at 50 to 85 °C (decompose at increased temperature so that a hidden dye becomes visible), and aldehydes which can be activated by means of UV irradiation Azoflange dyes and triphenylmethane dyes are also suitable.

Claims (16)

1. the safety element for the protection of value document and/or secure file, comprise a kind of matrix and at least one property material, when by electromagnetic radiation, carrying out suitable excitation, described at least one property material is luminous and/or absorb light and/or scattered light, wherein, in order to verify described value document and/or secure file, by activating, described safety element irreversibly can be switched to or is transformed into the second color state that is different from described the first color state from the first color state, luminous and/or absorption light and/or scattered light at least one property material described in described the first color state, luminous and/or absorption light and/or scattered light at least one property material described in described the second color state, and only described the second color state is the color state that is applicable to checking.

2. safety element according to claim 1, is characterized in that, described the first color state and described the second color state are distinguished by described energy luminous and/or light absorption and/or light scattering.

3. according to the described safety element of any one of the preceding claims, it is characterized in that, described matrix is made by polyamide.

4. according to the described safety element of any one of the preceding claims, it is characterized in that, described safety element is for be activated to described the second color state needs time of at least 8 hours from described the first color state.

5. according to the described safety element of any one of the preceding claims, it is characterized in that, described safety element needs activation condition for from described the first color state, being activated to described the second color state, and described activation condition comprises should avoid external pressure.

6. according to the described safety element of any one of the preceding claims, it is characterized in that, described safety element needs heat treatment for from described the first color state, being activated to described the second color state.

7. safety element according to claim 6, is characterized in that, implements described heat treatment at the temperature of at least 40 ℃ and the highest 100 ℃.

8. according to the described safety element of any one of the preceding claims, it is characterized in that, in order from described the first color state, to be activated to described the second color state, irradiation, especially ultraviolet ray that described safety element is exposed to by electromagnetic radiation are irradiated.

9. according to the described safety element of any one of the preceding claims, it is characterized in that, in order from described the first color state, to be activated to described the second color state, described safety element is subject to the processing by chemical reagent.

10. safety element according to claim 9, is characterized in that, the described processing by chemical reagent is included in the processing in steam atmosphere.

11. according to the described safety element of any one of the preceding claims, it is characterized in that, at least one property material is inserted in described matrix by extruding.

12. according to the described safety element of any one of the preceding claims, it is characterized in that, select at least one property material from following family: described family comprises derivative, salicylic acid and its derivative of benzoxazinone, benzoxazinone.

13. according to the described safety element of any one of the preceding claims, it is characterized in that, described safety element comprises at least one first and a kind of second luminous and/or property material light absorbing and/or scattered light respectively, wherein, only described First Characteristic material can pass through described altered activation.

14. the method for the manufacture of the safety element in the second color state, wherein, described manufacture method comprises the following steps:

A) provide according to the described safety element in the first color state of any one in claim 1 to 13 and

B) by activation, make described safety element irreversibly from described the first color state, be converted to described the second color state.

15. a value document and/or secure file, comprise that at least one is according to the described safety element of any one in claim 1 to 13.

16. the method for the manufacture of value document and/or secure file, described value document and/or secure file have the safety element in the second color state, said method comprising the steps of:

A) provide according to the described described safety element in the first color state of any one in claim 1 to 13,

B) by activation make described safety element irreversibly from described the first color state be converted to described the second color state and

C) the described safety element in described the second color state is integrated in described value document and/or secure file.