WO2011107271A1 - Élément de sécurité avec pigments magnétiques alignés - Google Patents

Élément de sécurité avec pigments magnétiques alignés Download PDF

Info

Publication number
WO2011107271A1
WO2011107271A1 PCT/EP2011/001031 EP2011001031W WO2011107271A1 WO 2011107271 A1 WO2011107271 A1 WO 2011107271A1 EP 2011001031 W EP2011001031 W EP 2011001031W WO 2011107271 A1 WO2011107271 A1 WO 2011107271A1
Authority
WO
WIPO (PCT)
Prior art keywords
security element
motif
magnetic pigments
pigments
layer
Prior art date
Application number
PCT/EP2011/001031
Other languages
German (de)
English (en)
Inventor
Georg Depta
Christoph Mengel
Original Assignee
Giesecke & Devrient Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Giesecke & Devrient Gmbh filed Critical Giesecke & Devrient Gmbh
Priority to CA2791199A priority Critical patent/CA2791199A1/fr
Priority to EP11706491.5A priority patent/EP2542421B1/fr
Priority to AU2011223202A priority patent/AU2011223202A1/en
Priority to PL11706491T priority patent/PL2542421T3/pl
Priority to BR112012021113A priority patent/BR112012021113A2/pt
Publication of WO2011107271A1 publication Critical patent/WO2011107271A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/20—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields
    • B05D3/207—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields post-treatment by magnetic fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/061—Special surface effect
    • 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
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/369—Magnetised or magnetisable 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
    • B42D25/41—Marking using electromagnetic radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • B42D2033/16—
    • B42D2033/18—
    • B42D2035/20—

Definitions

  • the invention relates to a security element for security papers, documents of value and other data carriers, with a color layer with magnetically oriented magnetic pigments forming a motif in the form of patterns, characters or a coding, which shows a dynamic movement effect when tilting the security element.
  • the invention further relates to a method for producing such a security element, a security paper and a data carrier with such a security element.
  • Data carriers such as valuables or identity documents, but also other valuables, such as branded goods, are often provided with security elements for the purpose of security, which permit 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 else in the form of a feature area printed directly on a value document.
  • the object of the invention is to specify a safety element of the type mentioned at the outset, which has a high degree of safety with good visibility and easy verifiability.
  • the security element having the features of the main claim.
  • a method for producing such a security element and a data carrier with such a security element are specified in the independent claims. Further developments of the invention are the subject of the dependent claims.
  • the first, dynamic motif of the magnetically oriented magnetic pigments is combined with a second, static motif generated by the action of laser radiation in the form of patterns, characters or a coding whose fixed outline, when viewed, is a stationary reference point forms for the dynamic motif.
  • the attention and recognition value of the security element is significantly increased.
  • the static motif provides a fixed reference point for the motion effects of the dynamic subject, thereby making it easier for a viewer to see and visually more conspicuous.
  • the combination of static and dynamic motif is easy to remember and their presence or absence can be easily determined even without tools, so that the relevant security features can be easily and reliably detected and verified by the viewer.
  • the creation of the static motif by means of laser exposure also allows special pass effects and To provide color matching features that can not be practically produced by other methods. Specific examples of such effects and features are given and explained below.
  • the magnetic pigments are non-spherical, in particular platelet-shaped.
  • the magnetic pigments can be colored and / or optically variable and, in the latter case, in particular contain surface-tilting thin-film elements with an interference layer structure.
  • the magnetic pigments can be formed, for example, on the basis of high-purity iron powder and, in particular, be prepared from reducing-treated carbonyl iron powder.
  • Advantageous platelet-shaped iron pigments can be taken in particular from the publication EP 1 251 152 Bl, whose disclosure on the preparation and properties of such pigments is included in the present description.
  • the magnetic pigments may also be, for example, wet-chemically produced multilayer pigments or magnetic interference pigments, as described in EP 1 366 380 A2, whose disclosure on the preparation and properties of such pigments is likewise included in the present description.
  • the magnetic pigments are present as a mixture of different, preferably platelet-shaped, magnetic pigments.
  • the ratio of the largest to the smallest diameter of platelet-shaped magnetic pigments 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 amounts to Part more than 2 ⁇ , preferably more than 5 ⁇ , more preferably more than 10 ⁇ and most preferably more than 15 ⁇ .
  • Platelet-shaped magnetic pigments, in particular in the preferred size range and in the preferred diameter-to-thickness range, can be oriented as desired by an external magnetic field relative to the layer plane of the color layer. With high diameter-to-thickness ratios, high contrasts between translucent and opaque layer areas can be set.
  • the oriented platelet-shaped magnetic pigments form an effective, three-dimensional appearance for the human eye, which in the context of this description is also referred to as a 3D effect or SD impression of the motif.
  • the three-dimensional appearance is associated with a dynamic movement effect, in which the position of the generated motif seems to move when tilting the security element or when changing the viewing or lighting direction.
  • the preferably platelet-shaped magnetic pigments are aligned in the form of a centrosymmetric marking, which advantageously contains in its interior a substantially uniformly aligned region with a diameter of 5 mm or more.
  • the platelet-shaped magnetic pigments are aligned inside the centrosymmetric marking substantially perpendicular to the surface of the ink layer, and are aligned outside the Kenn- drawing with a sharp transition substantially parallel to the surface of the ink layer.
  • the magnetic pigments are aligned by exactly one spherical magnet in the form of the first motif.
  • the magnetic pigments are aligned by a plurality of spaced-apart spherical magnets in the form of the first motif.
  • the several ball magnets can be in direct contact with each other during the alignment step or can be separated from one another by spacers.
  • the ball magnets can be arranged with such a large distance that their magnetic fields do not influence each other practically.
  • simultaneously ball magnets of different diameters can be used.
  • a further possibility to control the orientation of the magnetic pigments in a targeted manner is to suitably set the distance between the ball magnet or the ball magnet and the color layer of the security element.
  • the smaller this distance the greater the selectivity from oriented to non-oriented areas.
  • the most pronounced 3 D effect is achieved at slightly greater distances.
  • a plurality of spherical magnets can also be arranged at different distances from the color layer and thus generate motif parts with different degrees of pronounced 3D effect and different selectivity.
  • the preferably platelet-shaped magnetic pigments are aligned in the form of a marking having two regions in which the magnetic pigments are aligned substantially parallel to two planes pointing in different directions, preferably with a sharp transition between the regions.
  • the orientation of the preferably platelet-shaped magnetic pigments is in the form of a characteristic drawing, which contains a region in which the magnetic pigments are aligned arcuately relative to the surface of the ink layer.
  • the second, static motif is arranged completely within the color layer with the aligned magnetic pigments.
  • the second static motif in the register is partly arranged inside and partly outside the color layer with the oriented magnetic pigments.
  • the continuation of the second motif outside the color layer with perfect fit "sews" the color layer, as it were, with the surrounding substrate and thus creates a particularly difficult to reproduce design with high security against counterfeiting.
  • the second static motif may also extend over a recess in the color layer, which likewise represents an area outside the color layer.
  • the optical properties in particular the color or the optical variability of the magnetic pigments, are advantageously changed, but the orientation of the magnetic pigments is retained.
  • Such a change in the optical properties will hereinafter be referred to as "orientation-preserving modification" of the magnetic pigments.
  • the orientation-preserving modification leaves in particular the dynamic Corposcuro effects of the first, dynamic motif. changes, giving the impression of a fixed plane above the first motif through which the first motif shines through.
  • the orientation of the magnetic pigments in the region of the second, static motif is destroyed or the magnetic pigments are removed from the color layer in the region of the second, static motif.
  • the second, static motif shows no movement effect when viewed.
  • one or more components of the mixture may be altered.
  • the orientation of one or more components of this mixture may be destroyed in the region of the second, static motif, or one or more components of the mixture are removed from the color layer in the region of the second, static motif.
  • the second motif may also contain two subregions which were generated with different laser parameters, wherein the magnetic pigments in one subarea have been modified to preserve orientation and were destroyed or removed in the other subarea. Since the sections are generated with the same laser beam in the same operation, they are in perfect ePasser Passer to each other.
  • the ink layer is preferably formed by a screen printing layer.
  • the color layer with the magnetic pigments is expediently formed on the basis of a UV-curing color system, pure UV systems, UV / water-based systems or even UV / solvent-based systems being considered.
  • the color layer may also comprise dyes, luminescent substances or further pigments, in particular colored pigments, luminescent or optically variable pigments, for example pigments produced on the basis of liquid-crystalline polymers or iridescent pearlescent pigments, as described, for example, by the company
  • the color layer can also be arranged on a background layer which is colored or optically variable.
  • the background layer may have a colored or optically variable further identification. Such further identification can also interact visually with the first and / or second motif.
  • the security element according to the invention can be further provided with one or more protective layers for use as a security element for security papers, value documents and other data carriers, eg. with a transparent protective varnish.
  • the invention also includes a method for producing a security element for securing security papers, documents of value and other data carriers, in which at least one color layer with magnetically orientable magnetic pigments is applied to a substrate, the magnetic pigments are aligned magnetically in the form of patterns, characters or a coding and fixed in alignment, thereby producing a first subject with a dynamic motion effect, and by laser application in the at least one color layer, a second, static motif in the form of patterns, characters or an encoding is generated whose stationary outline forms a stationary reference point for the first motif.
  • a color layer based on a UV-curing color system is used, and the aligned magnetic pigments are fixed by UV curing of the color layer.
  • the ink layer is preferably printed by screen printing, even if in principle other printing processes, such as flexographic printing or intaglio printing come into question.
  • the laser application is preferably carried out with short pulse durations of 20 ns or less, particularly preferably 12 ns or less.
  • the invention also includes a data carrier with a security element of the type described, wherein the security element can be arranged both in an opaque region of the data carrier and in or over a transparent window region or a through opening of the data carrier.
  • the data carrier may in particular be a value document, such as a banknote, in particular a paper banknote, a polymer banknote or a foil-paper composite banknote, or an identity card, such as a credit card, a bankcard, a cashcard, an authorization card, a Identity card or a pass personalization page.
  • the first and / or second motif for example, represent a numbering, in particular as a replacement or supplement to a Buchpecializingzifferung, about on banknotes.
  • the first and / or second motif may also consist of numbers and letters derived from a digit, for example, numerals or letters calculated from standard-numbered cryptographic methods, or from a repetition of parts of a standard-numbering.
  • the first and / or second motif may further consist of a denomination, such as the denomination of a bill, as shown in Fig. 7, may represent a logo, such as a publisher logo of a central bank or the commemorative occasion of a jubilee, a date and / or represent a time or derived information such as a batch code may represent a graphical element such as shown in FIG. 2 or may represent a code such as a bar code, matrix code or a multi-color code.
  • either the magnetic pigment or, in the case of a mixture of different magnetic pigments, a particular magnetic pigment or the color layer can be blackened by the laser application or the substrate or a background layer below the color layer.
  • blending effects are possible, for example, a silver marking of the color layer and a blackening of the underlying substrate. The blackening may appear, depending on the thermal behavior of the substrate, as a finer or thicker mark than the marking of the color layer.
  • one or more substrate layers may also be provided above the color layer.
  • the layers above the color layer may be laser-markable, whereby here also different line widths can result.
  • These cover layers can also be patterned to produce additional tilting effects, for example by a grid of cylindrical lenses.
  • one or more substrate layers are present below the color layer, they can in particular be blackened and / or tactilely marked.
  • Substantially opaque printed layers can also be arranged above the color layer. These can, when they react with the laser radiation, be blackened or removed by the laser marking, for example to produce matt-gloss effects. At the same time the color layer can be marked orientation preserving. If the overpressure is transparent to the laser radiation, it can serve as a protective layer. In an advantageous design alignment, color impression and laser marks disappear when viewed in review. The laser marking can also remove the color, so that at the marked points the transparency is improved.
  • Such security elements can be used in transparent substrates or in transparent window areas of a data carrier. A transparent area may also represent only a partial area within a more complex structure, and / or may be combined with blackening of color layers or substrate layers.
  • FIG. 1 shows a schematic representation of a banknote with a security element according to the invention
  • FIG. 2 is a plan view of the security element of FIG. 1,
  • FIG. 3 schematically shows the orientation of the still movable magnetic pigments of a security element according to the invention in the field of a spherical magnet
  • 4 shows a cross section through the security element of FIG. 2 along the line IV-FV
  • FIG. 5 shows a cross section through the security element of FIG. 2 along the line V-V, a representation as in FIG. 5 for another exemplary embodiment of the invention, in which the interference layer pigments are orientation-preservingly modified by the laser radiation, and
  • FIG. 7 shows a security element according to the invention, in which the laser-generated static motif is continued in register with the surrounding area of the color layer.
  • FIG. 1 shows a schematic representation of a banknote 10, which is provided with a security element 12 shown in greater detail in FIG. 2 with a combined static and dynamic motif.
  • the security element 12 comprises a color layer 20 of magnetically oriented, platelet-shaped magnetic pigments aligned by a sphere magnet in the form of a sharply defined circular marker 22.
  • the circular marker 22 shows a dynamic motion effect, in which the position of the marker 22 on the security element 12 seems to move when the security element is tilted or when the viewing or illumination direction changes, thus forming a dynamic motif.
  • the dynamic motif 22 is combined with a laser-generated, static motif 28 in the form of two eighth notes, which shows no movement effect, but forms a fixed reference point for the dynamic motif 22 when viewed.
  • the observer can also easily check the authenticity of the security element 12, since the combination of static and dynamic motif is easy to memorize and its presence can be determined without any aids.
  • the generation of the static motif by means of laser radiation can produce special effects in the combination marking which can not or only with difficulty be achieved in other ways.
  • FIG. 4 shows a cross section through the security element of FIG. 2 along the line IV-IV
  • FIG. 3 shows schematically the alignment of the still movable magnetic pigments 44 in the field of a spherical magnet 30.
  • the magnetic pigments 44 may, for example, be platelet-shaped iron pigments which are produced from reducing-treated carbonyl selenium powder and which can be produced with a high ratio of platelet diameter to platelet thickness.
  • pigments with a support of mica, Si0 2 or mica and an outer shell of iron oxide (Fe 3 C> 4), which gives the magnetic pigments their magnetic properties.
  • Such pigments are offered for example by Merck KGaA under the name Colorona Blackstar (R). By changing the iron oxide layer thickness, different shades of color can be achieved (eg green, blue, red).
  • opaque magnetic pigments with a color shift effect for example under the name Colorcrpt (R) Magnetic Gold, magnetic interference pigments, as described in EP 1 366 380 A2, or covering magnetic pigments with a uniform color are also available.
  • a gold-colored, magnetically-alignable magnetic pigment A1 2 C> 3 may be coated with Fe30 4 and MgO.
  • a color layer 20 based on a UV-curing color system which contains the desired magnetically alignable, platelet-shaped magnetic pigments 44.
  • the printing of the ink layer 20 is preferably carried out by screen printing.
  • the substrate 40 is brought with the still moving in the ink layer 20 magnetic pigments 44 at a small distance over a spherical magnet 30 (Fig. 3).
  • the spherically extending magnetic field lines 32 of the spherical magnet align the magnetic pigments 44 substantially perpendicular to the substrate surface in a defined region 42, while Switzerlandsorientmaschine the magnetic pigments 44 outside of the region 42 is substantially parallel to the substrate surface.
  • the thus aligned magnetic pigments 44 are permanently fixed in their orientation by curing the UV varnish, as shown in the cross section of FIG. 4.
  • a centrosymmetric, circular marking 22 is produced, which contains in its interior a substantially uniformly aligned region 24 (FIG. 2) in which the magnetic pigments are perpendicular to the substrate surface.
  • the inner region 24 merges into the surrounding region 21 of the marking, in which the magnetic pigments of the color layer 20 are aligned essentially parallel to their surface.
  • the color layer 20 is exposed to laser radiation, preferably laser radiation from a pulsed infrared laser with short pulse durations of about 20 ns or less, preferably about 12 ns or less.
  • the laser beam is typically passed over the color layer 20 with a width of a few tenths of a millimeter and a marking speed of a few m / s in the form of the desired static motif 28.
  • the laser radiation destroys the orientation of the magnetic pigments in the applied areas or the magnetic pigments 44 are even completely removed from the ink layer 20 in the applied areas 28.
  • the latter is shown in Fig. 5, which shows a cross section through the security element of Fig. 2 along the line VV.
  • the regions 28 without magnetic pigments therefore no longer take part in the dynamic movement effect of the motif 22, but appear stationary and static.
  • the visual impression of the color layer 20 is changed in the applied areas 28 against the unimpacted areas of the ink layer, the type of visual change in particular by the design of the ink layer, by the choice of magnetic pigments, by the laser parameters in the application, by a optionally arranged below the color layer 20 background layer or a layer disposed over the color layer 20 cover layer can be adjusted in wide ranges as desired.
  • the color layer 20 may contain color pigments which are not influenced by the laser radiation and whose color impression after exposure determines the visual impression of the regions 28.
  • the color layer 20 can also be transparent or translucent after removal of the magnetic pigments and release the view of a background layer in the areas 28.
  • a background layer can be monochrome or even contain a marking, so that the applied areas 28 at different points of the security element 12 show a different visual impression.
  • the orientation of the magnetic pigments is obtained by the laser radiation, but the optical properties, in particular the color or the optical variability of the magnetic pigments, are changed.
  • FIG. 6 shows in cross-section a representation as in FIG. 5 for another embodiment of the invention, in which the color layer 20 contains optically variable, magnetic interference-layer pigments 52. Due to the laser radiation in the acted areas 50 only one or several layers of the interference layer pigments 52 are removed or destroyed, so that they lose their optically variable properties there and appear as modified pigments 54, for example with a silver-gray color impression.
  • a mixing region is formed in the security element, in which the modified pigments 54 on the one hand have a three-dimensional appearance due to their orientation.
  • static information is introduced into the color layer 20, which serves as a fixed reference point for the dynamic motif 22.
  • the dynamic light-dark effects of the modified magnetic pigments 54 remain unchanged, so that the impression of a fixed plane over the dynamic motif 22 is created, through which the dynamic motif 22, as it were, shines through.
  • the orientation-preserving modification of the optical properties of the magnetic pigments 52 can be used as an additional security feature, since the unchanged orientation of the modified pigments 54 can still be viewed and detected visually as well as with suitable auxiliaries by obtaining the light-dark effects.
  • FIG. 7 shows a security element 60 with a color layer 20 which contains a color mixture of magnetically oriented, optically variable, platelet-shaped magnetic pigments and of yellow-green color pigments.
  • a spherical magnet introduced a circular motive 22 with dynamic movement effect.
  • the color mixture may also contain optically variable pigments, in particular interference pigments or liquid crystal pigments.
  • the color mixture may consist of a mixture of different magnetically oriented platelet-shaped magnetic pigments.
  • the dynamic motif 22 is combined with two laser-generated static motifs 62, 64, which form fixed reference points for the dynamic motif 22.
  • the first static motif 62 forms by its outline the denomination "50" of the banknote 10 and is formed by an area in which the optical properties of the magnetic pigments were modified to preserve orientation.
  • the numerals of the denomination "50" appear with their stationary outline, for example silvery in front of the färkkippenden, yellow-green primed liinter ground the optically variable magnetic pigments and the yellow-green color pigments of the color layer 20.
  • the second, linear, static motif 64 extends beyond the boundary of the color layer 20 in the adjacent banknote substrate 70.
  • the magnetic pigments are completely removed from the ink layer 20 by the laser application, as shown in FIG. Of the color mixture then remain only the yellow-green color pigments.
  • the partial regions 66 therefore do not participate in the dynamic movement effect of the motif 22, but rather form a static image information within the color layer 20.
  • a colored and tactile detectable marking is produced in the banknote substrate 70 by the action of the laser radiation. Since the portions 66, 68 are formed inside and outside the ink layer 20 by a continuous guidance of the same laser beam, they are in perfect register with each other.
  • the security element 60 is practically "sewn" by the static motif 64 extending beyond the edge of the color layer 20 with the surrounding banknote substrate 70.
  • Such a continuous motif between a screen-printing ink layer 20 and the surrounding substrate with color edge at the edge of the element can be achieved with perfect registration only by the laser application according to the invention.
  • Another safety effect is formed in the described embodiment by the yellow-green color of the arranged within the ink layer portion 66, which results from the removal of the magnetic pigments and the stagnation of the yellow-green color pigments.
  • the color of the partial region 66 therefore corresponds to the color base of the surrounding, color-shifting layer 20. Such a correspondence is very difficult to reproduce in terms of printing technology, in particular not together with the perfect registration of the continued partial regions 66, 68.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Plasma & Fusion (AREA)
  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)

Abstract

L'invention concerne un élément de sécurité (12) pour des documents de sécurité, des documents de valeur et autres supports de données, comprenant au moins une couche de couleur (20) avec des pigments magnétiques alignés de façon magnétique (44), qui forment un premier motif (22) sous forme de modèles, de caractères ou d'un codage, qui montre un effet de mouvement dynamique lors du basculement de l'élément de sécurité. Selon l'invention, le premier motif (22) dynamique est combiné avec un second motif (28) statique, généré par l'effet de rayonnement laser, sous forme de modèles, de caractères ou d'un codage, dont le contour fixe forme, lorsqu'il est observé, un point de référence fixe pour le motif dynamique.
PCT/EP2011/001031 2010-03-03 2011-03-02 Élément de sécurité avec pigments magnétiques alignés WO2011107271A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA2791199A CA2791199A1 (fr) 2010-03-03 2011-03-02 Element de securite avec pigments magnetiques alignes
EP11706491.5A EP2542421B1 (fr) 2010-03-03 2011-03-02 Élément de sécurité avec pigments magnétiques alignés
AU2011223202A AU2011223202A1 (en) 2010-03-03 2011-03-02 Security element having aligned magnetic pigments
PL11706491T PL2542421T3 (pl) 2010-03-03 2011-03-02 Element bezpieczeństwa z ustawionymi pigmentami magnetycznymi
BR112012021113A BR112012021113A2 (pt) 2010-03-03 2011-03-02 elemento de segurança, método para a sua fabricação e portador de dados.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010009977A DE102010009977A1 (de) 2010-03-03 2010-03-03 Sicherheitselement mit ausgerichteten Magnetpigmenten
DE102010009977.5 2010-03-03

Publications (1)

Publication Number Publication Date
WO2011107271A1 true WO2011107271A1 (fr) 2011-09-09

Family

ID=44045282

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/001031 WO2011107271A1 (fr) 2010-03-03 2011-03-02 Élément de sécurité avec pigments magnétiques alignés

Country Status (7)

Country Link
EP (1) EP2542421B1 (fr)
AU (1) AU2011223202A1 (fr)
BR (1) BR112012021113A2 (fr)
CA (1) CA2791199A1 (fr)
DE (1) DE102010009977A1 (fr)
PL (1) PL2542421T3 (fr)
WO (1) WO2011107271A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012006623A1 (de) 2012-03-30 2013-10-02 Giesecke & Devrient Gmbh Verfahren zum Herstellen eines Datenträgers und daraus erhältlicher Datenträger
EP2946938A1 (fr) 2014-05-23 2015-11-25 Merck Patent GmbH Procédé de traitement laser de revêtements
JP2017506575A (ja) * 2013-12-13 2017-03-09 シクパ ホルディング ソシエテ アノニムＳｉｃｐａ Ｈｏｌｄｉｎｇ Ｓａ 効果層を生成するためのプロセス
US10357991B2 (en) 2016-12-19 2019-07-23 Viavi Solutions Inc. Security ink based security feature

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011116494A1 (de) * 2011-10-20 2013-04-25 Giesecke & Devrient Gmbh Verfahren zum Herstellen eines optisch variablen Sicherheitselements mit mikrokapselbasierter Farbschicht
DE102011120848B3 (de) * 2011-12-09 2013-05-23 Giesecke & Devrient Gmbh Sicherheitselement für Wertgegenstände, Verfahren zur Herstellung eines Sicherheitselements für Wertgegenstände und tragbarer Datenträger mit einem Sicherheitselement.
DE102014004349A1 (de) 2014-03-27 2015-10-15 Friedrich Kisters Authentifikationssystem
DE102014004347A1 (de) 2014-03-27 2015-10-15 Friedrich Kisters Authentifikationsverfahren und Authentifikationssystem
DE102014004348A1 (de) 2014-03-27 2015-10-15 Friedrich Kisters Sicherheitsverfahren
DE102014007976A1 (de) 2014-06-04 2015-12-31 Friedrich Kisters Sicherheitsvorrichtung und Authentifizierungsverfahren mit dynamischen Sicherheitsmerkmalen
DE102018000385A1 (de) * 2018-01-18 2019-07-18 Giesecke+Devrient Currency Technology Gmbh Einstellungsmagnet für die Herstellung von Sicherheitselementen mit magnetisch orientierten Effektpigmenten und Herstellverfahren für solche Einstellmagnete
EP4168185A1 (fr) 2020-06-23 2023-04-26 Sicpa Holding SA Procédés de production de couches à effet optique comprenant des particules pigmentaires magnétiques ou magnétisables
CN114031306B (zh) * 2020-07-21 2023-03-28 杭州玻美文化艺术有限公司 一种彩色太阳能玻璃面板及其制造方法
TW202239482A (zh) * 2021-03-31 2022-10-16 瑞士商西克帕控股有限公司 用於產生包含磁性或可磁化顏料粒子且展現一或更多個標記的光學效應層之方法
WO2023161464A1 (fr) * 2022-02-28 2023-08-31 Sicpa Holding Sa Procédés de production de couches à effet optique comprenant des particules pigmentaires magnétiques ou magnétisables et présentant un ou plusieurs indices
WO2024028408A1 (fr) 2022-08-05 2024-02-08 Sicpa Holding Sa Procédés de production de couches à effet optique comprenant des particules de pigment magnétiques ou magnétisables et présentant un ou plusieurs indices

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1366380A2 (fr) 2001-03-09 2003-12-03 Sicpa Holding S.A. Pigment ou dispositif d'interference en film mince magnetique et son procede de fabrication, encre d'impression ou composition de revetement, document de securite et utilisation d'un tel dispositif
WO2004007095A2 (fr) 2002-07-15 2004-01-22 Jds Uniphase Corporation Procede et appareil d'orientation des paillettes magnetiques
EP1251152B1 (fr) 2001-03-23 2005-09-28 Eckart GmbH & Co. KG Pigments métalliques à effet
WO2009033601A1 (fr) 2007-09-11 2009-03-19 Giesecke & Devrient Gmbh Élément de sécurité optiquement variable
WO2009074284A2 (fr) * 2007-12-11 2009-06-18 Giesecke & Devrient Gmbh Élément de sécurité optiquement variable

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439455A1 (de) * 1994-11-04 1996-05-09 Basf Ag Verfahren zur Herstellung von dreidimensionale optische Effekte aufweisenden Beschichtungen
DE102004004713A1 (de) * 2004-01-30 2005-09-01 Leonhard Kurz Gmbh & Co. Kg Sicherheitselement mit partieller Magnetschicht

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1366380A2 (fr) 2001-03-09 2003-12-03 Sicpa Holding S.A. Pigment ou dispositif d'interference en film mince magnetique et son procede de fabrication, encre d'impression ou composition de revetement, document de securite et utilisation d'un tel dispositif
EP1251152B1 (fr) 2001-03-23 2005-09-28 Eckart GmbH & Co. KG Pigments métalliques à effet
WO2004007095A2 (fr) 2002-07-15 2004-01-22 Jds Uniphase Corporation Procede et appareil d'orientation des paillettes magnetiques
WO2009033601A1 (fr) 2007-09-11 2009-03-19 Giesecke & Devrient Gmbh Élément de sécurité optiquement variable
WO2009074284A2 (fr) * 2007-12-11 2009-06-18 Giesecke & Devrient Gmbh Élément de sécurité optiquement variable

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012006623A1 (de) 2012-03-30 2013-10-02 Giesecke & Devrient Gmbh Verfahren zum Herstellen eines Datenträgers und daraus erhältlicher Datenträger
EP2644406A2 (fr) 2012-03-30 2013-10-02 Giesecke & Devrient GmbH Procédé de fabrication d'un support de données et support de données ainsi obtenu
JP2017506575A (ja) * 2013-12-13 2017-03-09 シクパ ホルディング ソシエテ アノニムＳｉｃｐａ Ｈｏｌｄｉｎｇ Ｓａ 効果層を生成するためのプロセス
US10933442B2 (en) 2013-12-13 2021-03-02 Sicpa Holding Sa Processes for producing effects layers
EP2946938A1 (fr) 2014-05-23 2015-11-25 Merck Patent GmbH Procédé de traitement laser de revêtements
EP2946938B1 (fr) 2014-05-23 2017-04-12 Merck Patent GmbH Procédé de traitement laser de revêtements
US9835943B2 (en) 2014-05-23 2017-12-05 Merck Patent Gmbh Process for the laser treatment of coatings
US10357991B2 (en) 2016-12-19 2019-07-23 Viavi Solutions Inc. Security ink based security feature
US11241901B2 (en) 2016-12-19 2022-02-08 Viavi Solutions Inc. Security ink based security feature
US11833849B2 (en) 2016-12-19 2023-12-05 Viavi Solutions Inc. Security ink based security feature

Also Published As

Publication number Publication date
CA2791199A1 (fr) 2011-09-09
DE102010009977A1 (de) 2011-09-08
EP2542421A1 (fr) 2013-01-09
BR112012021113A2 (pt) 2019-09-24
EP2542421B1 (fr) 2019-05-08
PL2542421T3 (pl) 2019-11-29
AU2011223202A1 (en) 2012-10-25

Similar Documents

Publication Publication Date Title
EP2542421B1 (fr) Élément de sécurité avec pigments magnétiques alignés
EP2608964B1 (fr) Élément de sécurité à pigments magnétiques orientés
EP0930174B1 (fr) Papier de sécurité contenant un élément de sécurité en forme de fil ou de bande
EP2121348B1 (fr) Élément de sécurité pour document de valeur
DE102007059550A1 (de) Optisch variables Sicherheitselement
EP2643161B1 (fr) Document de valeur et/ou de sécurité présentant une caractéristique de sécurité colorée transparente, ainsi que son procédé de fabrication
EP2886362B1 (fr) Document de valeur
EP1810253A1 (fr) Element de securite optiquement variable
WO2015078572A1 (fr) Élément de sécurité doté de pigments magnétiques orientables et d'un deuxième motif et procédé de fabrication correspondant
DE102007043052A1 (de) Optisch variables Sicherheitselement
WO2016155859A1 (fr) Élément de sécurite pourvu de pigments d'effet et d'une structure de gaufrage et procédé de fabrication de ce dernier
WO2013056782A1 (fr) Microcapsule et utilisation, élément de sécurité présentant des microcapsules et support de données équipé d'un tel élément de sécurité
EP2768677B1 (fr) ÉLÉMENT DE SÉCURITÉ OPTIQUEMENT VARIABLE AVEC UNE COUCHE & xA;D'ENCRE SUR LA BASE DE MICROCAPSULES ET PROCÉDÉ DE SON FABRICATION
DE102011116494A1 (de) Verfahren zum Herstellen eines optisch variablen Sicherheitselements mit mikrokapselbasierter Farbschicht
EP2928646A1 (fr) Élément de sécurité visuellement variable, doté d'une structure à couches colorées visuellement variable
EP2723577B1 (fr) Encre de sérigraphie magnétique ou encre d'impression flexographique magnétique et élément de sécurité imprimé avec
EP2694297B1 (fr) Support de données avec élément de sécurité et procédé pour fabriquer le support de données
EP2868483B1 (fr) Procédé pour la fabrication d'un élément de sécurité
EP3960481B1 (fr) Élément de sécurité variable optiquement
EP4342683A1 (fr) Élément de sécurité comprenant un code pouvant être usiné et procédé de fabrication d'un élément de sécurité
EP4342682A1 (fr) Élément de sécurité comprenant un code lisible par machine et son procédé de fabrication

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11706491

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2791199

Country of ref document: CA

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2011706491

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2011223202

Country of ref document: AU

Date of ref document: 20110302

Kind code of ref document: A

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112012021113

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112012021113

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20120822