AU2011223202A1

AU2011223202A1 - Security element having aligned magnetic pigments

Info

Publication number: AU2011223202A1
Application number: AU2011223202A
Authority: AU
Inventors: Georg Depta; Christoph Mengel
Original assignee: Giesecke and Devrient GmbH
Current assignee: Giesecke and Devrient GmbH
Priority date: 2010-03-03
Filing date: 2011-03-02
Publication date: 2012-10-25
Also published as: WO2011107271A1; PL2542421T3; EP2542421A1; EP2542421B1; CA2791199A1; DE102010009977A1; BR112012021113A2

Abstract

The invention relates to a security element (12) for security papers, value documents and other data carriers, comprising at least one colour layer (20) containing magnetically aligned magnetic pigments (44), which form a first motif (22) in the form of patterns, signs or an encoding that exhibits a dynamic movement effect when the security element is tilted. According to the invention, the first, dynamic motif (22) is combined with a second, static motif (28) in the form of patterns, signs or an encoding that is generated by the action of laser radiation and the stationary outline of which, under observation, forms a fixed reference point for the dynamic motif.

Description

Security Element Having Aligned Magnetic Pigments The present invention relates to a security element for security papers, value documents and other data carriers, having an ink layer having magnetically 5 aligned magnetic pigments that form, in the form of patterns, characters or a code, a motif that displays a dynamic motion effect when the security element is tilted. The present invention further relates to a method for manufacturing such a security element, a security paper and a data carrier having such a security element. 10 For protection, data carriers, such as value or identification documents, but also other valuable articles, such as branded articles, are often provided with security elements that permit the authenticity of the data carrier to be verified, and that simultaneously serve as protection against unauthorized 15 reproduction. The security elements can be developed, for example, in the form of a security thread embedded in a banknote, a cover foil for a banknote having a hole, an applied security strip, a self-supporting transfer element, or also in the form of a feature region imprinted directly on a value document. 20 Security elements that display viewing-angle-dependent visual effects play a special role in safeguarding authenticity, as these cannot be reproduced even with the most modern copiers. For this purpose, also magnetically alignable effect pigments that are magnetically aligned in the form of a motif to be 25 depicted, as described, for example, in publication WO 2009/033601 Al, have been in use for some time. Proceeding from this, the object of the present invention is to specify a security element of the kind mentioned above that combines high counterfeit 30 security with good perceptibility and easy verifiability.

-2 This object is solved by the security element having the features of the main claim. A method for manufacturing such a security element and a data carrier having such a security element are specified in the coordinated claims. Developments of the present invention are the subject of the 5 dependent claims. According to the present invention, in a generic security element, the first, dynamic motif of the magnetically aligned magnetic pigments is combined with a second, static motif, in the form of patterns, characters or a code, that 10 is produced by the action of laser radiation and whose location-fixed contour, when viewed, forms a location-fixed reference point for the dynamic motif. The combination of a static and a dynamic motif significantly increases the 15 attention and recognition value of the security element. As described in greater detail below, the static motif constitutes a location-fixed reference point for the motion effects of the dynamic motif and, in this way, makes said motif more easily perceptible and more visually conspicuous for a viewer. 20 In checking the authenticity of the security element, the combination of static and dynamic motif is easy to notice, and its presence or absence easily detectable also without auxiliary means, such that the relevant security features can be easily and reliably perceived and verified by the viewer. 25 Furthermore, the production of the static motif by means of laser impingement permits special register effects and color matching features to be provided that practically cannot be produced with other methods. Concrete examples of such effects and features are specified and explained below.

-3 In one preferred embodiment, the magnetic pigments are developed to be non-spherical, especially platelet-shaped. The magnetic pigments can be colored and/or optically variable and, in the latter case, especially include 5 color-shifting thin-film elements having an interference layer structure. The magnetic pigments can be formed, for example, on the basis of ultra pure iron powder and especially manufactured from reduction-treated carbonyl iron powder. Advantageous platelet-shaped iron pigments can be 10 found especially in publication EP 1 251 152 B1, whose disclosure on the manufacture and properties of such pigments is incorporated in the present description. The magnetic pigments can also be, for example, wet-chemically manufactured multi-layer pigments or magnetic interference pigments, as are described in EP 1 366 380 A2, whose disclosure on the manufacture and 15 properties of such pigments is likewise incorporated in the present description. In one preferred embodiment, the magnetic pigments are present as a mixture of different, preferably platelet-shaped, magnetic pigments. 20 The ratio of the largest diameter of platelet-shaped magnetic pigments to the smallest is advantageously more than 5:1, preferably more than 10:1. This ratio is particularly preferably between 40:1 and 400:1. The largest diameter of the platelet-shaped magnetic pigments is advantageously more than 2 pm, 25 preferably more than 5 pm, particularly preferably more than 10 Pm and very particularly preferably more than 15 pm. Platelet-shaped magnetic pigments, especially in the preferred size range and in the preferred diameter-to-thickness range, can be oriented as desired relative to the layer plane of the ink layer by an external magnetic field. In the case of high -4 diameter-to-thickness ratios, it is possible to set high contrasts between translucent and opacifying layer regions. The aligned platelet-shaped magnetic pigments form for the human eye an 5 effective, three-dimensional-seeming appearance that, in the context of this description, is also referred to as a 3-D effect or 3-D impression of the motif. Here, the three-dimensional appearance is associated with a dynamic motion effect in which the position of the motif produced appears to move when the security element is tilted or when the viewing or illumination direction is 10 changed. In one preferred embodiment, the preferably platelet-shaped magnetic pigments are aligned in the form of a centrosymmetric marking that, in its interior, advantageously includes a substantially uniformly aligned region 15 having a diameter of 5 mm or more. In the interior of the centrosymmetric marking, the platelet-shaped magnetic pigments are particularly advantageously aligned substantially vertically to the surface of the ink layer, and outside the marking, with a sharp transition, are aligned substantially parallel to the surface of the ink layer. 20 In one preferred variant, the magnetic pigments are aligned in the form of the first motif by exactly one sphere magnet. In another, likewise advantageous variant of the present invention, the 25 magnetic pigments are aligned in the form of the first motif by multiple, spaced-apart sphere magnets. Here, in the alignment step, the multiple sphere magnets can be in direct contact with each other or separated from each other by spacers. The sphere magnets can be arranged with such large spacing that their magnetic fields practically do not influence each other.

-5 However, it is also possible to systematically use the superimposition of the magnetic fields of the individual spheres to produce attractive alignments. In all variants, also sphere magnets of different diameters can be used simultaneously. 5 A further possibility to systematically control the alignment of the magnetic pigments consists in suitably setting the distance of the sphere magnet or sphere magnets to the ink layer of the security element. The smaller this distance is, the greater the discriminatory power between oriented and non 10 oriented regions is. The most pronounced 3-D effect, in contrast, is achieved with slightly larger distances. Upon aligning, also multiple sphere magnets can be arranged at different distances from the ink layer and, in this way, produce motif portions having differently pronounced expression of the 3-D effect and different discriminatory power. 15 In a further preferred embodiment, the preferably platelet-shaped magnetic pigments are aligned in the form of a marking that exhibits two regions in which the magnetic pigments are aligned substantially parallel to two planes that point in different directions, preferably with a sharp transition between 20 the regions. According to another preferred embodiment, the alignment of the preferably platelet-shaped magnetic pigments is present in the form of a marking that includes a region in which the magnetic pigments are aligned arcuately relative to the surface of the ink layer. Such markings can be found especially in publication WO 2004/007095 A2, whose disclosure on the 25 manufacture and properties of such markings is incorporated in the present description.

-6 In one advantageous variant of the present invention, the second, static motif is arranged completely within the ink layer having the aligned magnetic pigments. 5 In another, likewise advantageous variant of the present invention, the second, static motif is arranged in register partially within and partially outside the ink layer having the aligned magnetic pigments. The continuation of the second motif with perfect registration outside the ink layer "sews" the ink layer, so to speak, to the surrounding substrate and, in 10 this way, produces an embodiment that is particularly difficult to reproduce and has high counterfeit security. In this variant of the present invention, the second, static motif can also extend across a gap in the ink layer that likewise constitutes a region that lies outside the ink layer. 15 Advantageously, in the region of the second, static motif, the optical properties, especially the color or the optical variability of the magnetic pigments, are altered, while the alignment of the magnetic pigments, in contrast, is preserved. In the following, such a change in the optical properties is also referred to as an "orientation-preserving modification" of 20 the magnetic pigments. The orientation-preserving modification leaves especially the dynamic light-dark effects of the first, dynamic motif unaltered, such that the impression of a fixed plane over the first motif is created, through which the first motif shows through, so to speak. 25 Alternatively, it can advantageously also be provided that the alignment of the magnetic pigments is destroyed in the region of the second, static motif, or the magnetic pigments are removed from the ink layer in the region of the second, static motif. The second, static motif then displays no motion effect when viewed. In the event that a mixture of different magnetic pigments is -7 present, one or more components of the mixture can be altered. In particular, the alignment of one or more components of this mixture can be destroyed in the region of the second, static motif, or one or more components of the mixture are removed from the ink layer in the region of the second, static 5 motif. The second motif can also include two sub-regions that were produced with different laser parameters, with the magnetic pigments in one sub-region having been orientation-preservingly modified, and in the other sub-region, 10 destroyed or removed. Since the sub-regions are produced with the same laser beam in the same operation, they are in perfect register with each other. The ink layer is preferably formed by a screen printing layer. To facilitate the fixing of the aligned magnetic pigments, the ink layer having the magnetic 15 pigments is expediently formed on the basis of a UV-curing ink system, with pure UV systems, UV/water-based systems or also UV/solvent-based systems being able to be used. The ink layer can include, in addition to the magnetically aligned magnetic 20 pigments, also dyes, luminescent substances or further pigments, especially colored pigments, luminescent or optically variable pigments, for example pigments manufactured on the basis of liquid crystal polymers or iridescent pearlescent pigments, as are sold, for example, by Merck KGaA under the name Iriodin(R). 25 The ink layer can also be arranged on a background layer that is colored or optically variable. In particular, the background layer can exhibit a colored or optically variable further marking. Such a further marking can also visually interact with the first and/or second motif.

-8 Further, the security element according to the present invention can be furnished with one or more protective layers for use as a security element for security papers, value documents and other data carriers, for example with a 5 transparent protective lacquer. The present invention also includes a method for manufacturing a security element for safeguarding security papers, value documents and other data carriers, in which 10 - at least one ink layer having magnetically alignable magnetic pigments is applied to a substrate, - the magnetic pigments are magnetically aligned in the form of 15 patterns, characters or a code and fixed in their alignment, in this way producing a first motif having a dynamic motion effect, and - through laser impingement in the at least one ink layer, a second, static motif in the form of patterns, characters or a code is produced 20 whose location-fixed contour forms a location-fixed reference point for the first motif. Here, in a preferred method variant, an ink layer on the basis of a UV-curing ink system is used, and the aligned magnetic pigments are fixed by UV 25 curing the ink layer. The ink layer is preferably printed in screen printing, even if, in principle, other printing methods such as flexo printing or intaglio printing may be used.

-9 It is appropriate to carry out the laser impingement for producing the second motif with a pulsed infrared laser in the wavelength range from 0.8 pm to 3 pm, for example a Nd:YAG laser. The laser impingement is preferably carried out with short pulse durations of 20 ns or less, particularly preferably 5 of 12 ns or less. Finally, the present invention also includes a data carrier having a security element of the kind described, it being possible to arrange the security element both in an opaque region of the data carrier and in or over a 10 transparent window region or a through opening in the data carrier. The data carrier can especially be a value document, such as a banknote, especially a paper banknote, a polymer banknote or a foil-paper composite banknote, or an identification card, such as a credit card, a bank card, a cash card, an authorization card, a personal identity card or a passport 15 personalization page. In all embodiments, the first and/or second motif can constitute, for example, a numbering, especially as a substitute for or complement to a letterpress numbering, for example on banknotes. The first and/or second 20 motif can also consist of numbers and letters that are derived from a numbering, for example numbers or letters computed from a standard numbering through cryptographic methods, or from a repetition of parts of a standard numbering. The first and/or second motif can further consist of a value number, for example the denomination of a banknote, as shown in fig. 25 7, can depict a logo, for example an issuer logo of a central bank or the commemoration occasion of an anniversary, can depict a date and/or a time, or details derived therefrom, such as a batch code, can depict a graphic element, as shown, for instance, in fig. 2, or can depict a code, for example a barcode, matrix code or a multi-color code.

-10 Due to the laser impingement, especially either the magnetic pigment or, in the case of a mixture of different magnetic pigments, a certain magnetic pigment or the ink layer can be blackened, or the substrate or a background 5 layer below the ink layer. Also mixed effects are possible, for example a silver marking of the ink layer and a blackening of the underlying substrate. Here, depending on the thermal behavior of the substrate, the blackening can appear as a finer or thicker marking than the marking of the ink layer. 10 Above all when using the security element in cards, also one or more substrate layers can be provided over the ink layer. Here, the layers over the ink layer can be laser-markable, with different line widths being able to result here, too. Said cover layers can also be patterned to produce additional tilt effects, for example through a grid composed of cylindrical lenses. In 15 embodiments in which one or more substrate layers are present below the ink layer, said substrate layers can especially be blackened and/or tactilely marked. There can also be substantially opaque printing layers arranged over the ink 20 layer. Said printing layers can, if they react with the laser radiation, be blackened or removed by the laser marking, for example to produce matte glossy effects. Here, the ink layer can simultaneously be alignment preservingly marked. If the overprint is transparent for the laser radiation, it can serve as a protective layer. 25 In one advantageous embodiment, alignment, color impression and laser markings disappear when looked through. The laser marking can also remove the ink, such that the through view at the marked locations is improved. Such security elements can be used in transparent substrates or in - 11 transparent window regions of a data carrier. A transparent region can also constitute only a sub-region within a more complex structure, and/or can be combined with blackenings of ink layers or substrate layers. 5 Altogether, the proposed combination of a static and a dynamic motif in a security element according to the present invention offers especially the following advantages: - Complex manufacture: The materials printed on, inks and marking 10 tools are not readily available on the free market; - Good perceptibility of the relevant security effects without auxiliary means; 15 - Increase in the share of value-added in the printing shop since, due to the laser marking, an additional design effect with significantly increased security is achieved; and - Increase in the security of the data carrier through combination effects 20 and a register accuracy that is not renderable with other methods. Further exemplary embodiments and advantages of the present invention are explained below by reference to the drawings, in which a depiction to scale and proportion was omitted in order to improve their clarity. The 25 different exemplary embodiments are not limited to the use in the form specifically described, but rather can also be combined with one another. Shown are: -12 Fig. 1 a schematic diagram of a banknote having a security element according to the present invention, Fig. 2 a top view of the security element in fig. 1, 5 Fig. 3 schematically, the alignment of the still movable magnetic pigments of a security element according to the present invention in the field of a sphere magnet, 10 Fig. 4 a cross section through the security element in fig. 2 along the line IV-IV, Fig. 5 a cross section through the security element in fig. 2 along the line V-V, 15 Fig. 6 a diagram as shown in fig. 5 for another exemplary embodiment of the present invention, in which the interference layer pigments are alignment-preservingly modified by the laser radiation, and 20 Fig. 7 a security element according to the present invention, in which the laser-generated static motif is continued in perfect register in the surrounding region of the ink layer. 25 The invention will now be explained using the example of security elements for banknotes. For this, figure 1 shows a schematic diagram of a banknote 10 that is provided with a security element 12 having a combined static and dynamic motif, depicted in greater detail in fig. 2.

-13 With reference to fig. 2, the security element 12 exhibits an ink layer 20, having magnetically aligned, platelet-shaped magnetic pigments, that is aligned by a sphere magnet in the form of a sharply delimited circular marking 22. The circular marking 22 displays a dynamic motion effect for 5 which the position of the marking 22 on the security element 12 appears to move when the security element is tilted or when the viewing or illumination direction is changed, and thus forms a dynamic motif. The dynamic motif 22 is combined with, in the form of two eighth notes, a 10 laser-generated, static motif 28 that displays no motion effect, but rather, when viewed, forms a location-fixed reference point for the dynamic motif 22. Through said fixed reference point of the static motif 28 that is integrated in 15 the security element, the dynamic motion effect and the three-dimensional seeming appearance of the aligned magnetic pigments are emphasized and, in this way, become still more obvious. Due to the contrast effect, the immediate vicinity of the location-fixed motif 28 directs the attention of the viewer more strongly to the apparently moving dynamic motif 22. 20 The viewer can also easily check the security element 12 for authenticity, since the combination of static and dynamic motif is easy to memorize, and its presence is detectable without auxiliary means. 25 Finally, as explained in greater detail in the following, by producing the static motif by means of laser radiation, it is possible to produce in the combination marking special effects that can be achieved in another way only with difficulty or not at all.

-14 With reference to figures 2 to 4, first, the alignment of the magnetic pigments of the ink layer 20 with a sphere magnet is described in greater detail. Here, figure 4 shows a cross section through the security element in fig. 2 along the line IV-IV, and figure 3 shows, schematically, the alignment of the still 5 movable magnetic pigments 44 in the field of a sphere magnet 30. The magnetic pigments 44 can be, for example, platelet-shaped iron pigments that are manufactured from reduction-treated carbonyl iron powder and that can be produced having a high ratio of platelet diameter to 10 platelet thickness. Likewise, wet-chemically manufactured pigments, having a substrate composed of mica, SiO 2 or sheet silicates and an external shell composed of iron oxide (Fe 3 0 4 ) that lends the magnetic pigments their magnetic properties, may be used. Such pigments are offered, for example, by Merck KGaA under the name Colorona Blackstar(R). Here, by altering the 15 iron oxide layer thickness, different tones can be achieved (e.g. green, blue, red). For the security printing, also opacifying magnetic pigments having a color-shift effect are available, for example under the name Colorcrypt(R) Magnetic Gold, magnetic interference pigments, as are described in EP 1 366 380 A2, or opacifying magnetic pigments having a uniform color. 20 For example, a gold-colored, magnetically alignable magnetic pigment can comprise A120 3 that is coated with Fe304 and MgO. In the exemplary embodiment, to manufacture the security element 12, to a substrate 40 is applied an ink layer 20, on the basis of a UV-curing ink 25 system, that includes the desired magnetically alignable, platelet-shaped magnetic pigments 44. Here, the ink layer 20 is preferably imprinted in screen printing.

-15 Then the substrate 40, having in the ink layer 20 the magnetic pigments 44 that are still movable, is brought over a sphere magnet 30 at a small distance (fig. 3). In a defined region 42, the spherically running magnetic field lines 32 of the sphere magnet align the magnetic pigments 44 substantially vertically 5 to the substrate surface, while outside the region 42, the preferred orientation of the magnetic pigments 44 runs substantially parallel to the substrate surface. The magnetic pigments 44 aligned in this way are permanently fixed in their orientation by curing the UV lacquer, as shown in the cross section in fig. 4. 10 In this way, a centrosymmetric, circular marking 22 is created that, in its interior, includes a substantially uniformly aligned region 24 (fig. 2) in which the magnetic pigments are vertical to the substrate surface. In a narrow transition region 26, the inner region 24 transitions into the surrounding 15 region 21 of the marking, in which the magnetic pigments of the ink layer 20 are aligned substantially parallel to the surface of said ink layer. After the alignment and fixing of the magnetic pigments 44, the ink layer 20 is impinged on with laser radiation, preferably laser radiation of a pulsed 20 infrared laser with short pulse durations of about 20 ns or less, preferably of about 12 ns or less. Here, the laser beam is typically guided over the ink layer 20, in the form of the desired static motif 28, with a width of a few tenths of a millimeter and a marking speed of a few m/s. 25 Through the laser radiation, the orientation of the magnetic pigments is destroyed in the impinged on regions, or the magnetic pigments 44 are even completely removed from the ink layer 20 in the impinged on regions 28. The latter is depicted in fig. 5, which shows a cross section through the security element in fig. 2 along the line V-V. The regions 28 without magnetic -16 pigments thus no longer participate in the dynamic motion effect of the motif 22, but rather appear to be location-fixed and static. Also the visual impression of the ink layer 20 is altered in the impinged on 5 regions 28 compared with the regions of the ink layer that are not impinged on, the type of visual change being able to be set as desired in broad regions especially through the design of the ink layer, through the choice of magnetic pigments, through the laser parameters upon impingement, through a, if appropriate, background layer arranged under the ink layer 20, or a cover 10 layer arranged over the ink layer 20. For example, the ink layer 20 can include, in addition to the magnetic pigments 44, color pigments that are not influenced by the laser radiation and whose color impression after the impingement determines the visual 15 impression of the regions 28. After the removal of the magnetic pigments, the ink layer 20 can also be transparent or translucent, and the view of a background layer enabled in the regions 28. Such a background layer can be monochrome or itself include a marking, such that the impinged on regions 28 display a different visual impression at different locations on the security 20 element 12. In another variant of the present invention, the alignment of the magnetic pigments is preserved by the laser radiation, but the optical properties, especially the color or the optical variability of the magnetic pigments, are 25 altered. For this, figure 6 shows, in cross section, a diagram as in fig. 5 for another exemplary embodiment of the present invention, in which the ink layer 20 includes optically variable, magnetic interference layer pigments 52.

-17 Through the laser radiation, in each case, only one or more layers of the interference layer pigments 52 are removed or destroyed in the impinged on regions 50, such that said pigments lose their optically variable properties there and appear as modified pigments 54, for example having a silver-gray 5 color impression. Due to the alignment-preserving modification of the optical properties of the magnetic pigments 52, in the security element is created a mixed region in which the modified pigments 54, through their preserved orientation, 10 display, on the one hand, a three-dimensional-seeming appearance. On the other hand, through the location-fixed contour of the regions 50 is introduced into the ink layer 20 a static piece of information that serves as a fixed reference point for the dynamic motif 22. Here, in particular, the dynamic light-dark effects of the modified magnetic pigments 54 remain 15 unaltered such that the impression is created of a fixed plane over the dynamic motif 22, through which fixed plane the dynamic motif 22 shows through, so to speak. The alignment-preserving modification of the optical properties of the 20 magnetic pigments 52 can be used as an additional security feature, since the unaltered alignment of the modified pigments 54 can still be viewed and detected, both visually, through the preservation of the light-dark effects, and with suitable auxiliary means. 25 It is possible to further increase the counterfeit security of security elements according to the present invention also in that the laser-generated static motif is continued in perfect register in the surrounding region of the ink layer 20. For this, figure 7 shows a security element 60 having an ink layer 20 that includes an ink mixture composed of magnetically aligned, optically -18 variable, platelet-shaped magnetic pigments and of yellow-green color pigments. As described in connection with fig. 2, through alignment with a sphere magnet, a circular motif 22 having a dynamic motion effect is introduced into the ink layer 20. 5 Alternatively or in addition to the color pigments, the ink mixture can also include optically variable pigments, especially interference pigments or liquid crystal pigments. Further, the ink mixture can consist of a mixture of different magnetically aligned, platelet-shaped magnetic pigments. 10 The dynamic motif 22 is combined with two laser-generated static motifs 62, 64, which form location-fixed reference points for the dynamic motif 22. The first static motif 62 forms, through its contour, the denomination "50" of the banknote 10, and is formed by a region in which the optical properties of the 15 magnetic pigments were alignment-preservingly modified. The numerals of the denomination "50", with their location-fixed contour, appear, for example, silver against the color-shifting, yellow-green-primed background of the optically variable magnetic pigments and the yellow-green color pigments of the ink layer 20. 20 The second, linear, static motif 64 extends beyond the boundary of the ink layer 20 to the adjoining banknote substrate 70. In the sub-region 66 of the motif, which is located within the ink layer 20, the magnetic pigments are completely removed from the ink layer 20 by the laser impingement, as 25 depicted in fig. 5. Then, of the ink mixture, only the yellow-green color pigments remain. The sub-regions 66 thus do not participate in the dynamic motion effect of the motif 22, but rather form a static piece of image information within the ink layer 20.

-19 In the sub-region 68 of the second motif 64, which sub-region extends into the banknote substrate 70, a colored and tactilely discernible marking is produced in the banknote substrate 70 through the action of the laser radiation. Since the sub-regions 66, 68 are produced within and outside the 5 ink layer 20 through a continuous guidance of the same laser beam, they are in perfect register with each other. Through the static motif 64 that reaches beyond the edge of the ink layer 20, the security element 60 is practically "sewn" to the surrounding banknote substrate 70. 10 It is possible to achieve such a through motif between a screen printing ink layer 20 and the surrounding substrate having a colored edge at the border of the element with perfect registration only through the laser impingement according to the present invention. In the described exemplary embodiment, a further security effect is formed by the yellow-green color of the sub-region 15 66 arranged within the ink layer, which color is created by the removal of the magnetic pigments and the staying of the yellow-green color pigments. The color of the sub-regions 66 thus corresponds to the primer color of the surrounding, color-shifting layer 20. Reproducing such a correspondence with printing technology is hardly possible, especially not together with the 20 perfect registration of the continued sub-regions 66, 68.

- 20 List of reference signs 10 Banknote 12 Security element 5 20 Ink layer 21 Surrounding region 22 Marking, dynamic motif 24 Inner region 26 Transition region 10 28 Static motif 30 Sphere magnet 32 Field lines 40 Substrate 42 Region 15 44 Magnetic pigments 50 Impinged on region 52 Magnetic interference layer pigments 54 Modified pigments 60 Security element 20 62, 64 Static motifs 66, 68 Sub-regions 70 Banknote substrate

Claims

1. A security element for security papers, value documents and other 5 data carriers, having at least one ink layer having magnetically aligned magnetic pigments that form, in the form of patterns, characters or a code, a first motif that displays a dynamic motion effect when the security element is tilted, characterized in that the first, dynamic motif is combined with, in the form of patterns, characters or a code, a second, static motif that is produced 10 by the action of laser radiation and whose location-fixed contour, when viewed, forms a location-fixed reference point for the dynamic motif.

2. The security element according to claim 1, characterized in that the magnetic pigments are developed to be non-spherical, especially platelet 15 shaped.

3. The security element according to claim 1 or 2, characterized in that the magnetic pigments are dyed and/or optically variable, especially include color-shifting thin-film elements having an interference layer structure. 20

4. The security element according to at least one of claims 1 to 3, characterized in that the magnetic pigments are formed on the basis of ultra pure iron powder. 25 5. The security element according to at least one of claims 1 to 4, characterized in that the magnetic pigments are aligned in the form of a centrosymmetric marking that preferably includes, in its interior, a substantially uniformly aligned region having a diameter of 5 mm or more. - 22 6. The security element according to at least one of claims 1 to 5, characterized in that the magnetic pigments are aligned by a sphere magnet or by multiple spaced-apart sphere magnets in the form of the first motif. 5 7. The security element according to at least one of claims 1 to 6, characterized in that the second, static motif is arranged completely within the ink layer having the aligned magnetic pigments.

8. The security element according to at least one of claims 1 to 6, 10 characterized in that the second, static motif is arranged in register partially within and partially outside the ink layer having the aligned magnetic pigments.

9. The security element according to at least one of claims 1 to 8, 15 characterized in that, in the region of the second, static motif, the optical properties, especially the color or the optical variability of the magnetic pigments, are altered, the alignment of the magnetic pigments, in contrast, is preserved. 20 10. The security element according to at least one of claims 1 to 8, characterized in that, in the region of the second, static motif, the alignment of the magnetic pigments is destroyed, or in that, in the region of the second, static motif, the magnetic pigments are removed from the ink layer. 25 11. The security element according to at least one of claims 1 to 10, characterized in that the ink layer is formed by a screen printing layer. - 23 12. The security element according to at least one of claims 1 to 11, characterized in that the ink layer having the magnetic pigments is formed on the basis of a UV-curing ink system. 5 13. The security element according to at least one of claims 1 to 12, characterized in that the ink layer includes, in addition to the magnetically aligned magnetic pigments, dyes, luminescent substances or further pigments, especially colored pigments and/or luminescent pigments and/or optically variable pigments. 10

14. The security element according to at least one of claims 1 to 13, characterized in that the ink layer is arranged on a background layer that is colored or optically variable, especially in that the background layer exhibits a colored or optically variable further marking. 15

15. A method for manufacturing a security element for safeguarding security papers, value documents and other data carriers, in which - at least one ink layer having magnetically alignable magnetic 20 pigments is applied to a substrate, - the magnetic pigments are magnetically aligned in the form of patterns, characters or a code and are fixed in their alignment, thus producing a first motif having a dynamic motion effect, and 25 - through laser impingement in the ink layer, a second, static motif in the form of patterns, characters or a code is produced whose location fixed contour, when viewed, forms a location-fixed reference point for the first motif. - 24 16. The method according to claim 15, characterized in that an ink layer on the basis of a UV-curing ink system is used and the aligned magnetic pigments are fixed by UV-curing the ink layer. 5

17. The method according to claim 15 or 16, characterized in that the ink layer is printed in screen printing.

18. The method according to at least one of claims 15 to 17, characterized 10 in that the laser impingement is carried out with a pulsed infrared laser in the wavelength range from 0.8 pim to 3 jim, preferably with short pulse durations of 20 ns or less, particularly preferably with short pulse durations of 12 ns or less. 15 19. A data carrier having a security element according to at least one of claims 1 to 14.

20. The data carrier according to claim 19, characterized in that the security element is arranged in or over a transparent window region or a 20 through opening in the data carrier.