EP3621818B1 - Sicherheitselement mit mikroreflektoren und dessen herstellungsverfahren - Google Patents

Sicherheitselement mit mikroreflektoren und dessen herstellungsverfahren Download PDF

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Publication number
EP3621818B1
EP3621818B1 EP18723701.1A EP18723701A EP3621818B1 EP 3621818 B1 EP3621818 B1 EP 3621818B1 EP 18723701 A EP18723701 A EP 18723701A EP 3621818 B1 EP3621818 B1 EP 3621818B1
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EP
European Patent Office
Prior art keywords
security element
microreflector
pattern
principal plane
element according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18723701.1A
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German (de)
English (en)
French (fr)
Other versions
EP3621818A1 (de
Inventor
Kathrin Hovestadt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giesecke and Devrient Currency Technology GmbH
Original Assignee
Giesecke and Devrient Currency Technology GmbH
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Publication of EP3621818A1 publication Critical patent/EP3621818A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/324—Reliefs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/23—Identity cards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/373—Metallic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing

Definitions

  • the invention relates to a security element with micro-reflectors, in particular for the production of documents of value, such as bank notes, checks or the like, the micro-reflectors being structured in such a way that they present at least one object.
  • micro-reflectors in reflection to present objects that show movement effects.
  • An example is the WO 2015/078572 A1 and WO 2016/180522 A1 referenced.
  • the microreflectors are formed in a microreflector pattern, so that the flat security element is divided into a multiplicity of pixels, each of which comprises at least one optically effective facet, that is to say at least one microreflector.
  • the flat shape of the security element defines a main plane.
  • the microreflectors are oriented in such a way that when the security element is tilted and / or rotated, the object has a movement effect that is related to the main plane. Instead of a movement effect, the objects can also show a tilting effect.
  • DE 10 2013 019 944 A1 uses magnetically aligned pigments for a first movement effect of a first motif and reflective microstructures for a second movement effect of a second motif.
  • the directions of movement can be different, but lie in the plane of the security element.
  • the document shows the preamble of claim 1.
  • Magnetically aligned pigments of a first motif are combined with a see-through area with a second motif, which has at least one perforation.
  • the directions of movement can be different, but are also in the plane of the security element.
  • Coarse structures (> 30 ⁇ m) are used to produce a first tilting or movement effect, and fine structures ( ⁇ 30 ⁇ m) are used to produce a second tilting or movement effect.
  • the movement effects should deliberately be similar, the directions of movement shown are therefore the same.
  • the invention is therefore based on the object of specifying a security element with a higher level of protection against forgery, preferably the recognizable effect should be particularly concise for the viewer.
  • a security element has micro-reflectors and, due to its flat design, defines a main plane.
  • the microreflectors present objects which, when the security element is tilted and / or rotated, have a movement effect that is related to the main plane.
  • the security element has at least a first and a second microreflector pattern, which differ from one another in their structure of the microreflectors - both in terms of the objects presented and in terms of the movement effect generated.
  • the first microreflector pattern is designed in such a way that the movement effect runs at least partially perpendicular to the main plane.
  • the second microreflector pattern is designed in such a way that the movement effect runs in the main plane or parallel to it.
  • the flat security element is provided for the protection or production of data carriers, in particular documents of value, such as bank notes, checks or the like, or for the protection of products.
  • the security element is designed in such a way that different movement effects are combined.
  • the microreflectors are arranged in the two patterns, each pattern causing a different movement effect for the presented object.
  • the movement effects differ in relation to the main plane, which is predetermined by the flatness of the security element.
  • the first micro-reflector pattern has one Movement effect that is at least partially perpendicular to the main plane.
  • the security element is tilted and / or rotated, for example, the object moves forwards or backwards with respect to the main plane.
  • the security element is turned / tilted, the object comes closer to the viewer or moves away from him - it changes its position in relation to the main plane.
  • the second microreflector pattern creates an effect that moves the presented object in the main plane or parallel to it. This movement effect differs particularly distinctly from the movement effect which the first microreflector pattern brings about on the object presented by it.
  • An object moving at least partially perpendicular to the main plane is also conceivable without a second moving object existing.
  • a movement for example against a static background, is relatively difficult to recognize as a vertical movement.
  • the present solution thus not only increases security, since a movement against the main plane is even more difficult to reproduce than a (lateral or parallel) movement to the main plane, but at the same time supports the usability as a security element for the viewer.
  • the feature “at least partially perpendicular to the main plane” is to be understood to mean that the movement comprises at least one component which runs perpendicular to the main plane. However, the movement does not have to run exclusively along this perpendicular.
  • the direction of movement of the second movement effect is preferably in an angular range between 45 degrees and 135 degrees to the main plane.
  • the movement effects, which run in spatially different directions, distinguish the two objects very clearly for a viewer.
  • the term “different” is not restricted to a right-angled position of the directions of movement.
  • the first microreflector pattern is particularly preferably designed so that the movement effect of the object is a movement of the object in an angular range of 45 to 135 degrees (45 to 90 degrees), preferably 60 to 120 degrees, to the main plane and / or a change in an inclination and / or Azimuth angle of the object to the main plane by more than 45 degrees, preferably more than 90 degrees.
  • the two objects that are presented by the two microreflector patterns can also change their relative position laterally when the security element is rotated / tilted if the movement effect, which is partially perpendicular to the main plane, also has a movement component in the lateral direction.
  • the movement effects it is possible through the movement effects to bring the object moving parallel or in the main plane into congruence or correspondence with the object whose movement effect is at least partially perpendicular to the main plane by appropriately tilting and / or rotating the security element. This is a particularly striking effect of the security element, which can be checked by a user without any further aids.
  • the movement effect running in or parallel to the main plane can also be embodied with a non-linear direction of movement, in particular arcuate or circular, in which the second microreflector pattern is designed accordingly.
  • a movement in the main plane or parallel to it can also be implemented by a rotation or by pumping, that is to say an enlargement (or reduction) of the surface of the object.
  • the term vertical movement / vertical movement effect is used in a partially simplified manner, provided that the movement occurs “at least partially perpendicular to the main plane”.
  • the term lateral (r or parallel (r)) movement (effect) is used in a partially simplified manner, provided that the direction of movement is only in or parallel to the main plane.
  • a movement effect always includes a movement of the object between an initial position of the object (before the security element is tilted and / or rotated) and an end position of the object.
  • the immediate change between two positions of an object is called the tilting effect.
  • the micro-reflector patterns contain a plurality of micro-reflectors. These can, as is known from the prior art, for example the WO 2011/066990 A2 is known to be formed in the form of pixels.
  • a pixel is a small surface area in which at least one, preferably several microreflectors are located, which have a uniform, a non-uniform or even a quasi-random geometry and represent a pixel of the presented object.
  • Their reflective properties for example geometry, alignment and / or coating, are designed in such a way that they generate an image point of the presented object. Since the micromirrors, in contrast to typical printing inks, reflect almost all of the incident light, they appear significantly brighter.
  • the micromirrors work in reflection, it is not necessary to the same extent that they are accurate in the manner of a conventional printed image to be arranged side by side according to the pixels to be displayed. Rather, the microreflectors present an image by reflecting incident illuminating radiation and can therefore also lie in a spatial arrangement on a substrate for a certain viewing distance range that is not absolutely predetermined by the spatial position of the image points to be generated of the presented object. In this description, therefore, we deliberately do not speak of "representation of an image", but of the presentation. This is intended to express the projection properties that the microreflectors use when generating images.
  • micro-reflector patterns in one another so that micro-reflectors of one pattern are adjacent to or surrounded by micro-reflectors of the other pattern.
  • Checkerboard-like nesting, line-like nesting or any desired microreflector patterns screwed into one another are equally possible in order to present the two objects with the different movement effects.
  • the differences in the microreflector patterns do not necessarily relate to the pattern structure in which the pixels of the microreflector patterns are arranged in plan view, but rather to the formation of the individual pixels and their arrangement, which leads to the presentation of the respective object and the movement effect generated. For this reason, it is important for the invention that the microreflector patterns differ from one another both in terms of the object presented and in terms of the movement effect generated. This difference does not necessarily require a different geometric division or distribution of the pixels within a microreflector pattern. In this structural division, the micro-reflector patterns, as exemplary embodiments will show, even be completely identical, ie have the same distribution of pixels in plan view. In the pixels, of course, the geometrical structures of the microreflectors of the two microreflector patterns are designed differently and bring about the presentation of different objects as well as different movement effects for the presented objects.
  • the different movement effects and different objects enable very concise appearances of the security element, which change when tilting and / or rotating.
  • the microreflector pattern in one embodiment such that the object presented by the first microreflector pattern surrounds the object presented by the second microreflector pattern constantly or in at least one specific rotational position and / or tilted position of the security element.
  • This can be used, for example, to create an effect in which the first object moves three-dimensionally in such a way that the second object moving parallel to the main plane moves into the first object, but in particular also under or over the first object, during the rotation or tilting .
  • This effect is much clearer than if only a parallel shift were to take place in the main plane, for example shifting a presented object moving in parallel into a print image.
  • the micro-reflector pattern in one embodiment such that the object presented by the first micro-reflector pattern moves under and / or over the object presented by the second micro-reflector pattern when the security element is rotated and / or tilted in a certain manner.
  • the objects can be completely or partially arranged one below the other in the course of the movement will. Portions of a hidden object (or the hidden object) are (will) not be represented (or as long as they are on top of each other).
  • At least one of the two microreflector patterns presents an object that appears three-dimensional.
  • the first microreflector pattern would be preferred, since its object also moves in the depth direction, ie with respect to the main plane. Such a movement is particularly noticeable in the case of an object that appears three-dimensional.
  • a third microreflector pattern which generates an object that appears three-dimensional, remains arranged statically with respect to the main plane when the security element is tilted and / or rotated.
  • the third microreflector pattern therefore does not produce any movement effect or the object is stationary.
  • the third microreflector pattern can present on the three-dimensionally appearing object a light reflex that moves on the object in accordance with the tilting and / or rotating.
  • a data carrier in particular a value document - for example a bank note, an identity document, a check, an electronically readable card, etc. as a value document - is designed with a security element of the type mentioned.
  • a product for protection against counterfeiting is equipped with the security element.
  • a flat substrate which defines a main plane due to this shape, is provided with microreflectors which present at least one object.
  • the object shows a movement effect that is related to the main plane.
  • at least the first and second microreflector patterns are formed on the security element.
  • the two microreflector patterns differ from one another both in terms of the object presented by them and in terms of the movement effect generated.
  • the first microreflector pattern is designed in such a way that the movement effect of the object presented by it runs at least partially perpendicular to the main plane.
  • the second microreflector pattern is designed in such a way that the moving object of the object presented by it runs in the main plane or parallel to it.
  • Fig. 1 shows schematically a bank note B with a security element S.
  • the bank note B is printed on a bank note paper, and the security element S is designed as a film element which has been applied to the bank note paper. Due to the two-dimensional design of the security element S and the bank note B, the security element S defines a main plane H, which in Fig. 1 coincides with the plane of the drawing.
  • the security element S has a large number of micro-reflectors which present two or more objects P to the viewer in a plan view.
  • Fig. 2 shows schematically a top view of the security element S. It has two microreflector patterns 1, 2, which in the embodiment of FIG Fig. 2 are nested in one another like a checkerboard pattern, so that both horizontally and horizontally microreflector pixels 3 of the first microreflector pattern 1 alternate with microreflector pixels 4 of the second microreflector pattern 2.
  • Fig. 3 shows schematically the presented objects P of the security element S.
  • the first microreflector pattern 1 is designed with regard to its microreflector pixels 3 so that it presents a ring 5, and when the main plane H of the security element S is tilted, a three-dimensional movement effect 7 is generated in that the three-dimensional ring appears 5 moves back or forth with respect to the main level H. This is illustrated by a double arrow 7.
  • the main level of the security element is in Fig. 3 in the XY plane, the Z axis is perpendicular to the main plane.
  • the microreflector pixels 4 of the second microreflector pattern 2 are designed in such a way that a star 6 can be seen as the presented object P, which moves within the main plane H or parallel to it when the security element S is rotated and / or tilted.
  • the latter is the case when the micro-reflector pattern 2 is designed in such a way that the star 6 hovers in front of or behind the main plane.
  • the movement effect according to the double arrow 7 can be implemented, among other things, by the following examples:
  • the ring 5 hovers over the main plane H and changes its distance from the main plane H by tilting and / or rotating the security element.
  • the ring 5 don't even have a three-dimensional presentation effect.
  • the movement can intersect the main plane, so the ring 5 can initially be in front of and at the end of the continuous movement behind the main plane. It can also be a two-dimensional element that changes its distance from the main plane H when tilting / rotating.
  • the ring 5 is presented as a 3D image and changes its display so that it appears at different angles to the main plane H.
  • the ring in a first tilt / turn position, the ring appears so inclined to the main plane H that the left half of the ring dips under the main plane H, the right half rises above the main plane H.
  • the angular position of the object is defined by an angle of inclination to the main plane (strength of the inclination) and its possibly static or also moving azimuth angle to the main plane.
  • the right half of the ring is now below the main level and the left half of the ring is above the main level.
  • the position of the object is rotated around an axis that lies in the main plane.
  • the position of the ring 5 has thus changed at least partially perpendicular to the main plane.
  • the lateral position of the star 6 varies for both examples with the tilting / turning.
  • the star 6 with a three-dimensional structure. When tilted / rotated, this curvature maintains the distance (and its orientation) to the main plane H; so it moves only in the main plane H or parallel to it.
  • Fig. 4 shows a further embodiment which differs in several aspects from those of the Fig. 2 and 3 differs.
  • the security element S is designed as a security thread of a bank note B. This would also be the case with the embodiment of FIG Fig. 2 , 3 possible.
  • the microreflector patterns 1 and 2 are here next to one another as far as the top view is concerned. They are not nested with each other. This is also the case in the embodiment of FIG Fig. 2 , 3 possible.
  • the presented objects P like Fig. 5 shows, side by side. This, too, can be used as a feature in the embodiment of FIG Fig. 2 , 3 will be realized.
  • FIGS. 6A to 6K show different embodiments of the presented objects P, the reference symbols of corresponding elements in the drawing figures 6A to 6K being provided with a corresponding suffix a to k and otherwise having the same numbers in all embodiments.
  • Number 9 always denotes the object which shows a movement effect which has at least one component which is perpendicular to the main plane H. Objects that only move parallel to or in the main plane are always designated by number 10.
  • the number 11 denotes a property of the corresponding objects that has a curvature. These objects can be viewed as still objects. The wandering of a light reflex can be simulated on such a curved surface of the object, as it would occur in accordance with the curvature and in accordance with the tilting / turning (in particular as in WO 2011/066990 A2 described).
  • an external 3-dimensional, ring-shaped element 9A is provided surrounding a numerical value 10A, which is bordered by a curved surface 11A.
  • the number 10A includes objects that can be perceived individually by the viewer, such as stripes which move in the main plane when the security element is tilted, for example about its X axis.
  • Figure 3 move the strips in the number 10A preferably against the tilting direction.
  • the curvature of the surface 11A remains unchanged when tilted.
  • the ring 9A as a whole continuously changes its distance from the main plane when it is tilted.
  • the design of the ring differs through the shape of an oval and the digit with regard to the number shown and with regard to the direction of movement of the strips (along the x-axis).
  • the digit could move at least partially (or completely) out of the ring in any direction (within the main plane) when tilted.
  • the ring does not completely surround the digit, but only in a specific turn / tilt position, namely when the ring 9c moves into the maximally raised position relative to the main plane H.
  • the ring 9C is still below the main level or below the level in which the stripes of the number move, and is therefore partially not represented (it appears to be covered to the viewer).
  • the object 9D changes its distance from the main plane.
  • an annular object 10e contains both an internal object 9e and an external surrounding object 9e.
  • an outer and a middle object 9f surround an inner object 10f, which is designed as a value number.
  • non-linear movements of the strips are shown, the non-linear movement following an outer contour of the object.
  • several objects 9g lie next to an object 10g, whereby they lie both above and below the object 10g.
  • the object 9h lies completely above the objects 10h.
  • Objects 9i are arranged above and below an object 10i, with an object 10i in the lower object 9i, which is designed as a value number.
  • Figure 6J a multi-part design is shown which is a combination of the Figures 6E and 6F is equivalent to.
  • Figure 6K shows the example of a security strip 12 in which objects 9k and 10k alternate, some of which also surround one another.
  • the object 9k can be designed, for example, as a country outline in order to provide a reference to the regional validity of a bank note.
  • All embodiments of the security element can be implemented as film elements, as film elements on window cutouts or as security threads. They can be attached to paper or polymer banknotes on both the front and the back. The same applies to security documents, identification papers, etc.

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EP18723701.1A 2017-05-12 2018-05-08 Sicherheitselement mit mikroreflektoren und dessen herstellungsverfahren Active EP3621818B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017004585.2A DE102017004585A1 (de) 2017-05-12 2017-05-12 Sicherheitselement mit Mikroreflektoren
PCT/EP2018/000248 WO2018206147A1 (de) 2017-05-12 2018-05-08 Sicherheitselement mit mikroreflektoren und herstellungsverfahren

Publications (2)

Publication Number Publication Date
EP3621818A1 EP3621818A1 (de) 2020-03-18
EP3621818B1 true EP3621818B1 (de) 2021-09-08

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US (1) US10744812B2 (zh)
EP (1) EP3621818B1 (zh)
CN (1) CN110573350B (zh)
DE (1) DE102017004585A1 (zh)
WO (1) WO2018206147A1 (zh)

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DE102018004088A1 (de) 2018-05-18 2019-11-21 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit Mikroreflektoren
DE102019008250A1 (de) 2019-11-27 2021-05-27 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit kippungsabhängiger Motivdarstellung
DE102020004423A1 (de) 2020-07-22 2022-01-27 Giesecke+Devrient Currency Technology Gmbh Sicherheitsmerkmal mit kippungsabhängiger Motivdarstellung

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WO2018206147A1 (de) 2018-11-15
US20200122499A1 (en) 2020-04-23
CN110573350A (zh) 2019-12-13
DE102017004585A1 (de) 2018-11-15
EP3621818A1 (de) 2020-03-18
CN110573350B (zh) 2021-10-15
US10744812B2 (en) 2020-08-18

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