WO2015078573A1 - Security element comprising magnetically alignable magnetic pigments, and method for producing same - Google Patents

Abstract

The invention relates to a security element for security papers, valuable documents and other data carriers which consists of a substrate having a front side and a rear side, wherein a color layer comprising magnetically aligned magnetic pigments is applied to at least one side of the substrate, said pigments forming a first motif in the form of patterns, characters or a coding, wherein the first motif exhibits a first dynamic movement effect when the security element is tilted, wherein the first dynamic motif is combined with a second motif, wherein the second motif is applied to at least one side of the substrate. The invention furthermore relates to a method for producing a corresponding security element. According to the invention, the second motif is formed by a see-through region in the security element, wherein the see-through region is formed by at least one perforation. A perforation is a region with a reduced thickness of the substrate or complete removal of the substrate. A perforation is thus a partial material removal of the substrate or else a hole in the substrate. In this case, a motif region having a visual impression that is altered in reflected light and/or transmitted light is arranged within the see-through region, said motif region exhibiting a second dynamic movement effect.

Description

 Safety element with magnetically orientable magnetic pigments and process for its production

The invention relates to a security element for security papers, documents of value and other data carriers, which consists of a substrate with a front side and a back side, wherein on at least one side of the substrate, a color layer with magnetically oriented magnetic pigments is applied, which a first motif in the form of patterns, Form a character or a coding, wherein the first motif when tilting the security element shows a first dynamic movement effect, wherein the first, dynamic motif is combined with a second motif, wherein the second motif is applied to at least one side of the substrate. The invention further relates to a method for producing a corresponding security element.

A generic security element is for example from the

EP 2608964 A2. Data carriers, such as banknotes and security or identity documents, but also other valuables, such as branded goods, are often provided with security elements for security, which allow a verification of the authenticity of the data carrier and at the same time serve as protection against unauthorized reproduction. The security elements can be embodied, for example, in the form of a security thread embedded in a banknote, a covering film for a banknote with a hole, an applied security strip, a self-supporting transfer element or also in the form of a feature area applied directly to a value document. A special role in the authenticity assurance play security elements, the viewing angle-dependent visual effects show, as they can not be reproduced even with the latest copiers. Magnetically orientable effect pigments which are magnetically aligned in the form of a motif to be displayed have also been used for this purpose for some time.

The invention has the object of developing a generic security element such that the protection against counterfeiting is further increased.

This object is solved by the features of the independent claims. Further developments of the invention are the subject of the dependent claims.

According to the invention, the second motif is formed by a see-through region in the security element, wherein the see-through region is formed by at least one perforation. Within the see-through area, a motif area is arranged with a visual impression which changes in the on-light and / or transmitted light and which shows a second dynamic movement effect.

Such a viewing area is known from WO 2010/072329 AI. A perforation in the sense of this invention is an area with a reduced thickness of the substrate of the security element or a complete removal of the substrate. A perforation is thus a partial material removal of the substrate or a hole in the substrate. This results in an increase in the light transmittance or the transparency of the substrate. By combining a first motif with a first dynamic one. Movement effect and a second motif from a see-through area with a second dynamic motion effect, the attention and recognition value and thus the security against counterfeiting of the security element is significantly increased. In addition, an optical security feature is provided by the second motif in the form of a see-through area, which is formed by perforations, which also increases the security against forgery of the security element, since the second motif is designed recognizable both in reflected light and in transmitted light.

According to a preferred embodiment, it is provided that the first motif reflects two or more different image motifs in different spatial regions, so that a first tilt or movement image is created for a viewer upon corresponding movement of the security element. In addition, the second motif also creates the impression of a second tilt or movement image. The first tilt or movement image is now at least partially adapted to the second tilt or movement image or the second tilt or movement image at least partially to the first tilt or movement image.

This results in two tilting or moving images whose appearance is at least partially adapted to each other. For example, the first tilt or movement image shows a rotating object when the security element is tilted. When the security element is tilted, the perforations of the second motif also give the impression of a rotation which picks up or continues the rotation of the object of the first motif. Particularly preferably, the second motif is arranged around the first motif around and rotate the two motifs in the same direction, so that gives the viewer the impression of a single rotating object.

According to an alternative preferred embodiment, it is provided that the first motif reflects an enlarging or reducing outline of an image motif in different spatial regions, so that a first pump image is created for the viewer upon corresponding movement of the security element. The second motif generates for a viewer the impression of a second pump image in the form of an enlarging or reducing contour of an image motif, wherein the first pump image is at least partially adapted to the second pump image and the second pump image to the first pump image.

This results in two pump images whose appearance is at least partially adapted to each other. For example, the first pump image shows an alternately expanding and contracting object when the security element is tilted. The perforations of the second motif also produce the impression of a "pumping" object picking up or continuing the pumping of the object of the first motif, particularly when the second motif is disposed around the first motif and performs the pumping of the first Motive in the same direction on, so that gives the viewer the impression of a single alternating expanding and contracting object again.

An object in the sense of this invention is, for example, a letter or text, a numeral or number, a motif, a portrait, a combination of the aforementioned objects or any geometric or graphic image, such as a star or a wheel. For the purposes of this invention, the at least partial adaptation of one image to another image means, for example

 • when tilting the security element both images have a similar direction of movement,

· One image performs a horizontal, vertical, spiral or similar motion and the other image also performs a horizontal, vertical, spiral or similar motion,

 • there is a meaningful connection between the two images, resulting in, for example, a continuous text or a logical sequence of images

 • both pictures show the same picture.

This results in a logical connection between the two images for a viewer. However, since both images are generated using different methods, this represents a higher hurdle for a counterfeiter or imitator to falsify or imitate the security element according to the invention than if both images were produced using the same method. According to a further advantageous embodiment, the see-through region of the second motif is formed by a line grid of a plurality of cut lines, which are introduced into the substrate. The cut lines can have any orientation to one another. For example, the cut lines may be aligned parallel or at least nearly parallel to one another, or may be wave-shaped, with two adjacent lines being aligned, for example, in parallel (antiphase) or anti-parallel (antiparallel). The geometry or outline shape of the perforations is thus not limited to a round or elliptical shape in the plane of the paper, but can take any desired shape, be it particularly preferably a linear outline shape, ie an outline shape with two nearly mutually parallel edges or longitudinal sides, which are substantially longer than the other two edges or sides. The grid-like arrangement of many of these line-shaped perforations next to each other can produce large-area objects, such as objects with a cross-sectional area in the paper plane with a total area of about 1 cm ² or more.

In accordance with a further advantageous embodiment of the security element, it is provided that the perforations of the see-through region with the color layer are magnetically aligned with magnetically aligned magnetic pigments, at least partially. The color with the magnetically oriented magnetic pigments is in this case in particular within the perforations and at least partially replenishes them. Thus, it is preferred to provide very fine structures which show the first dynamic movement effect. In the manufacture of this security element, the ink layer is pressed into the perforations, for example with the aid of a doctor blade, and wiped away from the surface of the side of the substrate surrounding the perforations. Alternatively, the color layer may be retained on the surface of the side of the substrate surrounding the perforations and only reduced in thickness, with the squeegee wiping only a portion of the color layer into the perforations.

According to a further advantageous embodiment of the security element is provided that the color layer is printed with magnetically oriented magnetic pigments on a front and / or back of the security element and adjacent to the perforations of the see-through area, this is at least partially overlapped or arranged in the perforations. The security element according to the invention can thus be embodied either on the front or rear side of the substrate or on both sides. According to a further advantageous embodiment, it is provided that the perforations of the see-through region, as already explained above, form a border of the color layer with magnetically aligned magnetic pigments.

The substrate according to the invention can be embodied as a single-layer or multi-ply security paper. Multi-ply security paper contains at least one ply of paper. The further layers can likewise be made of paper, but also of other materials, for example by plastic films. The security paper is particularly preferably made of cotton fibers, as used for example for banknotes.

Preferably, the substrate may also be made of paper of other natural fibers, also preferably of synthetic fibers, a mixture of natural and synthetic fibers or also preferably of at least one plastic film. Further preferably, the substrate consists of a combination of at least two superimposed and interconnected different substrates, a so-called hybrid, for example a combination of plastic film-paper-plastic film, i. a paper substrate is covered on either side by a plastic film, or paper plastic film paper, i. a substrate made of a plastic film is covered on each of its two sides by a paper substrate.

Information on the weight of the substrate used are given, for example, in the document DE 10243 653 A9, the statements of which are fully incorporated in this application in this regard. The document DE 10243 653 A9 states in particular that the paper layer usually has a weight of 50 g / m ² to 100 g / m ² , preferably of 80 g / m ² to 90 g / m ² . Of course, depending on the application, any suitable weight can be used.

Security elements or documents of value for which such a substrate or security paper can be used are, in particular, banknotes, stocks, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other papers that are subject to counterfeiting, such as passports and other identification documents, as well as cards, such as Credit or debit cards whose card body has at least one layer of security paper, and also product security elements such as labels, seals, packaging and the like.

The simplified term security paper or value document includes all the above materials, documents and product securing means.

The invention further relates to a method for producing a security element according to the invention, wherein the perforations of the see-through area are generated by a laser beam. The laser beam hereby at least partially removes material from the substrate so that the substrate in this region has a reduced thickness or a recess or a hole, i. a complete removal of material or the thickness zero, has.

With a laser beam, it is known to produce particularly fine or thin structures.

According to a preferred embodiment, it is provided that the color layer is printed with magnetically oriented magnetic pigments on a portion of a side of the substrate of the security element. Subsequently, the laser beam is guided over the side of the substrate, so that on the one hand within the range of the color layer with magnetically oriented magnetic pigments, the color layer is at least partially modified and on the other hand outside the region of the color layer with magnetically oriented magnetic pigments perforations are introduced into the substrate.

According to a further preferred embodiment, it is provided that the color layer consists of a mixture of magnetically oriented magnetic pigments and non-metallic pigments. The magnetically oriented magnetic pigments are noticeably influenced by the laser beam, whereas the non-metallic pigments are not noticeably influenced by the laser beam. After lasering, there is thus an at least partial change or even destruction of the magnetic pigments within the area exposed to the laser beam and thus a change or complete extinction of the first dynamic movement effect. Outside the area exposed to the laser beam, the metal pigments and thus the first dynamic movement effect are retained.

It is understood that the features mentioned above and those yet to be explained below can be used not only in the specified combinations but also in other combinations, without departing from the scope of the present invention, insofar as this is covered by the scope of the claims.

Reference to the following embodiments and the additional figures, the advantages of the invention will be explained. The exemplary embodiments represent preferred embodiments, to which, however, the inventions be limited in any way. Furthermore, the representations in the figures of better understanding are highly schematized and do not reflect the realities. In particular, the proportions shown in the figures do not correspond to the conditions present in reality and serve exclusively to improve the clarity. Furthermore, the embodiments described in the following exemplary embodiments are reduced to the essential core information for the sake of clarity. In the practical implementation much more complex patterns or images can be used.

In detail, show schematically:

1 shows a security element according to the invention after a first

 Embodiment,

Fig. 2 shows an inventive security element after a second

 Embodiment. Fig. 1 shows a total of six perforations 1, which are arranged around a color layer 2 with magnetically oriented magnetic pigments.

The color layer 2 with magnetically oriented magnetic pigments shows a first motif with a first dynamic movement effect in the form of a rotation in the direction of the arrow, ie clockwise. For example, when tilting the security element, a pointer, star, or other figure rotates clockwise about an axis that is perpendicular to the plane of the paper. The curved shape of the individual perforations 1 also generates the impression of a rotational movement in the clockwise direction when the security element is tilted, as the individual perforations 1 become recognizable alternately. The perforations form the second motif with a second dynamic movement effect.

Both rotational movements, i. the rotational movement of the ink layer 1 and the rotational movement of the perforations 2, take place in the same direction and are thus matched to one another.

Fig. 2 shows a substrate 3 of a security element in plan view and in this case in Fig. 2a from the front and Fig. 2b of the back. A perforation 1 is introduced into the substrate 3 in the form of the letter "T", the perforation in this exemplary embodiment representing a complete material removal and thus an opening or opening of the substrate 3. On the front side of the substrate 3 is a color layer 2 with magnetically oriented magnetic pigments.

On the one hand, the security element can be produced by first applying the color layer 2 to the substrate and then introducing the perforation 1 into the substrate 3 with a laser beam. As a result, both the perforation 1 is generated in a process step, as well as the removed the color layer 2. Alternatively, first the perforation 1 can be introduced into the substrate 3. If the substrate 3 consists, for example, of paper, the perforation 1 can already be produced during the production of the paper by means of a watermark, as is well known from the prior art. Of course, the perforation can also be done later Time be generated for example by means of a laser or a punch.

An observer recognizes from the front side a first tilting or movement effect or a first pumping image which is generated by the color layer 2 with magnetically aligned magnetic pigments. Furthermore, he recognizes the letter "T." When looking at the back, one recognizes only the letter "T".

Claims

P a n t a n s p r e c h e Security element for security papers, documents of value and other data carriers, consisting of a substrate with a front side and a back side, wherein on at least one side of the substrate, a color layer with magnetically oriented magnetic pigments is applied, the first motif in the form of patterns, characters or a coding form, wherein the first motif when tilting the security element shows a first dynamic movement effect, wherein the first dynamic motif is combined with a second motif, wherein the second motif is applied to at least one side of the substrate, characterized in that the second motif by a see-through area is formed in the security element, wherein the see-through area is formed by at least one perforation, wherein within the see-through area a motif area is arranged with a changed in incident light and / or transmitted light visual impression, the second dynamic Beweg ungewffekt shows. Security element according to claim 1, characterized in that the first motif reflects two or more different image motifs in different spatial areas, so that for the viewer with a corresponding movement of the security element, a first tilt or movement image is created and the second motif for a viewer the impression of a second The first tilt or movement image is at least partially adapted to the second tilt or movement image or the second tilt or motion image is at least partially adapted to the first tilt or movement image. The security element according to claim 1, characterized in that the first motif reflects an enlarging or reducing contour of an image motif in different spatial areas, so that for the viewer with a corresponding movement of the security element, a first pump image is created and the second motif for a viewer the impression of a second Pump image generated in the form of an enlarging or contracting outline of a picture motif, wherein the first pump image is at least partially adapted to the second pump image or the second pump image is at least partially adapted to the first pump image. Security element according to at least one of the preceding claims, characterized in that the see-through region of the second motif is formed by a line grid of a plurality of parallel cut lines, which are introduced into the substrate. Security element according to at least one of the preceding claims, characterized in that the perforations of the see-through area with the color layer are magnetically aligned with magnetic pigments at least partially filled. Security element according to at least one of the preceding claims, characterized in that the color layer is printed with magnetically oriented magnetic pigments on a front and / or back of the security element and adjacent to the perforations of the see-through region or at least partially overlapping. Security element according to at least one of the preceding claims, characterized in that the perforations of the see-through area form a border of the color layer with magnetically oriented magnetic pigments. 8. A method for producing a security element according to at least one of the preceding claims, characterized in that the perforations of the see-through area are generated by a laser beam. A method according to claim 8, characterized in that the color layer is printed with magnetically aligned magnetic pigments on a portion of one side of the substrate of the security element and then the laser beam is passed over the side of the substrate, so that within the range of the color layer with magnetically oriented magnetic pigments Color layer is at least partially modified and outside the range of the color layer with magnetically oriented magnetic pigments perforations are introduced into the substrate. 10. The method according to claim 8 or 9, characterized in that the color layer consists of a mixture of magnetically oriented magnetic pigments and non-metallic pigments and the magnetically oriented magnetic pigments are influenced by the laser beam recognizable influences and the non-metallic pigments are not noticeably influenced by the laser beam ,