KR20120089668A - Data carrier having a window - Google Patents

Abstract

The present invention provides a foil element having a window 14 extending from the bottom 16 of the data storage medium to the top 18 and a safety element 22 covering the window 14 on the top 18 of the data storage medium. For a data storage medium having a 20, in particular a valuable or warranty document, where a part of the safety element 22 lies on a window 14 and a part of the safety element 22. Is placed next to the window 22. Here, according to the invention, the part of the safety element 22 overlying the window 14 represents the radiation deformation region 24 in the register with the window 14 and wherein the visual appearance of the safety element 22 is electromagnetic radiation. It is provided to be modified by the action of.

Description

Data Carrier Having a Window

The invention relates to data storage, particularly for valuable or endorsement documents, having a window extending from the bottom to the top of the data storage medium and a foil element having a safety element covering the window on the top of the data storage medium. With respect to the medium, a portion of the safety element rests on the window and a portion of the safety element lies next to the window.

For guarantees, safety or valuable documents such as banknotes, identification cards, etc., safety elements are sometimes provided to ensure the accuracy of the documents and to act simultaneously as a protection against piracy. It is done. Here, see-through safety characteristics, such as see-through windows in banknotes, become more attractive. Here, for window guarantee, for example, a foil provided on an adhesive layer on one side is applied to the banknote to prevent the opening ball (opening ball) previously formed in the banknote.

Here, the application of foil to banknotes is subject to unavoidable registration errors so that the safety element of the foil, which is able to specifically cooperate with the dog ball, cannot be perfectly aligned with the dog ball. This registration error must be taken into account in the design of the safety element, limiting freedom in design creation.

Further from this, it is an object of the present invention to further develop a data storage medium of the kind mentioned above, and in particular to facilitate, and in this way, an applied safety element having a design which is highly precisely registered with windows. It is intended to combine counterfeit defense and an attractive visual appearance.

This object is solved by a data storage medium having the features of the main claims of the present invention. The method for producing such a data storage medium is specified in the claims which have cooperated together. The development of the invention is the subject of the dependent claims.

According to the present invention, in a general data storage medium, a portion of a safety element overlying a window represents a radiation deformation region in the register with a window, and wherein the visual appearance of the safety element is deformed by the action of electromagnetic radiation. Is provided.

Here, although the present invention allows for a registration error between the safety element of the foil element to which it is applied and the window of the data storage medium, however, the operation of the safety element in the deformation area in the register with the window via the action of radiation, in particular laser infringement, It is based on the idea of transforming the visual appearance. The registry difference between the foil element and the window then almost or completely retracts in the background upon review, and instead a complete registry between the window and the deformation region dominates the visual effect for the reviewer.

Due to the precise arrangement between the windows and the deformation regions, the two elements can also be cooperative or related to each other in their visual appearance and / or their information content. For example, the window and the deformation region may depict the same motif or only depict each of the complementary motif portions to form a complete motif. Such visual or content-related interactions mean that the manufacture of windows and deformation regions, which are associated safety features in terms of content, constitutes a higher technical barrier than the manufacture of two safety features that are separate or not related in terms of content. This increases the value of attention and perception of security and, on the other hand, results in increased forgery safety.

The window of the data storage medium can be formed by a dog hole extending from the bottom to the top of the data storage medium. The window may also be formed by a transparent area of the data storage medium that allows the human eye to see through, such as an unprinted area of a polymer banknote. In multiple layers of data storage media, the window can also be formed by a combination of transparent areas in the first data storage layer and opening balls in the second data storage layer, for example, paper layers of composite banknotes and completely. It is a combination of non-transparent ink absorbing layers.

In an advantageous variant of the invention, the safety element represents a metal layer which is to be demetallized in the radiation deformation region. It is understood here that demetallization is its conversion to abrasion or transparent deformation of the metal layer. The metal layer may be completely demetallized, in other words completely removed or completely converted to a transparent deformation, or it may also be only partially partially metallized and still translucent, especially from 20% to It forms a translucent strained region with a transmission between 80%. As will be explained in more detail below, in the area of the opening, the metal layer may only be demetallized in a few areas so that the radiation deformation area inside the opening area produces a sub-pattern in which the opening is completely registered. Can be.

Safety elements typically include metallized diffraction lines, metallized light diffraction lines, metallized matte patterns or thin film elements, typically constructed from metallic refractive layers, dielectric spacer layers and absorbing layers. In addition, other safety elements with metallized structures, such as metallized concave microreflective surfaces, can also be considered.

In an advantageous variant of the invention, the safety element represents a first and second fractional region which interacts differently with electromagnetic radiation, the first and second fractional regions being partly on the window and partly beside the window. Is in. Here, different interactions can be placed to different degrees or also different kinds of interactions.

For example, different degrees of interaction in the metallized safety element may result in demetallization in only the most fractional areas, color changes in the most fractional areas, or also the most fractional in the radiation-coloring or radiation-decoloring safety elements. It can cause strong color change of the area. For different degrees of interaction, both fractional regions respond in essentially the same way, but one fragment region is to a lesser extent or greater than the other, which reacts unequal at all.

In other kinds of interactions, in contrast, both fractional regions respond to the action of radiation, but in a different way. For example, the colorless region of the radiation-colored safety element may turn red in the most fractional region and blue in the second fractional region. Also in this manner, other visual appearances can be reached in the deformation region.

In an advantageous embodiment, the radiation modification region includes only the most fragmentary region, not the second fractional region, such that the second fractional region exhibits the same visual appearance on and beside the window.

In order to achieve different degrees of interaction, in a preferred embodiment, at least one of the two fractional regions exhibits a relief in the form of a grating pattern defined by grating an interference pattern, preferably the direction and content of the grating line. The second fractional region is a grating defined by the second grating constant and the second direction of the grating line, which is the second grating constant and / or the second grating constant of the grating line of the second fractional region and / or the second direction that is different from the first direction. In the form of a pattern may comprise a non-or similar relief. The grating pattern of the second fractional region may also represent the same grating constant and direction of the grating line as the grating pattern of the most fractional region, but a predetermined angle, for example a grating pattern, is arranged on the side of the tooth structure relative to the grating pattern. The angle can be tilted.

Material ablation occurs with the aid of the grating pattern, resulting in increased absorbance. Increased light absorption can be physically explained by resonance excitation (surface plasmon bipolar or cavity resonance) in the metal. For this purpose, the grating constant is chosen for convenience so that it is at the degree of luminosity of the wavelength of the laser beam used for the radiation deformation. The absorbance resonant in the grating furthermore strongly depends on the cross-sectional profile and on the grating material as well as the surrounding material. The profile is thus conveniently adapted to the laser wavelength used to achieve high absorbance. For example, gratings with different trench depths laterally exhibit different absorbance performances laterally. In an advantageous embodiment, the first fractional region comprises a grating pattern, possibly with a high absorbance, and the second fractional region is developed without the grating pattern. The incident laser radiation then derives the incident and polarization angles for the demetallization of the grating region for the cooperating wavelength.

In particular, the second direction of the grating line may be substantially perpendicular to the first direction to achieve other interactions of the fractional regions with linearly polarized electromagnetic radiation. In a preferred embodiment, the two fractional regions exhibit a grating pattern having a grating constant of 750 to 1,050 nm, preferably about 900 nm and having a different direction of the grating line.

A further possibility for creating different interactions for the two fractional regions filled with the grating pattern consists of the use of grating patterns with different grating profiles for the first and second fractional regions. Particularly preferred is a variant of the invention in which the two fractional regions work with polarized laser radiation to different degrees, where a clear difference in the degree of interaction can easily be achieved. In the development of the present invention, it is provided that two fractional regions are formed from nested sub-regions. This sub-region is particularly composed of parallel strips, preferably strips having a strip width between 10 μm and 500 μm.

In additional embodiments with differently interacting fractional regions, the first fractional region comprises a surface-enlarging relief image, preferably a surface-enlarging relief image having a surface morphology that changes into an interacting sinusoidal shape. The surface morphology can be represented by a grating constant of, for example, a height of 200 to 400 nm, preferably of about 300 nm and in the x- and y-directions, respectively of 200 to 400 nm, preferably of about 300 nm.

Further details on the selective removal of only one or more fragmentary regions by illegal copying are detailed in the publication of WO # 2006/079489 A1, the disclosures of which are incorporated herein by reference.

In a further possibility to create differently interacting fractional regions, the first and second fractional regions are formed by raising and lowering the embossing pattern. To this end, in particular,

The support is provided in an embossed pattern having a rise and a fall forming a first and second region having different first and second levels of height, the second region of the embossed pattern being developed in the form of a desired pattern,

The embossing pattern is metalized adjacent to the first and second regions, and

The metallized embossing pattern is invaded by radiation which selectively removes metallization in the second region of the embossing pattern by the action of radiation.

Illegal copying can occur especially with laser radiation.

Here, after the metallization step, a laser beam absorbing and / or laser beam reflecting cover layer filling the lowering of the embossing pattern is preferably applied to the metalized embossing pattern. In the selection of the cover layer, it is of primary importance that little laser radiation is transmitted into the area of descent. The laser beam reflecting cover layer can thus exhibit the same or even better effect than the laser beam absorbing cover layer. After its application, this cover layer is removed from the raised area of the metalized embossing pattern, especially with a roller or wiper. Here, technically unavoidable, a thin toning film of the cover layer can remain on the raised area of the metalized embossing pattern. This cover layer advantageously comprises a laser beam absorbing or laser beam reflecting pigment or dye, and in this case can additionally be used as an ink layer to make the design observable from the bottom. . Further details and modifications of the patterning method on the basis of metalized embossing patterns with rising and falling are detailed in patent application PCT / EP2009 / 00882, the disclosures of which are incorporated herein by reference. .

The present invention relates to micro-optical moiré magnification arrangements, micro-optical moiré-type magnification arrangements and in particular to international patent applications WO 2009/00528 A1 and WO 2006/087138 A1, the disclosures of which are incorporated herein by reference. The more general module described may be particularly useful in micro-optic description arrangements such as magnification arrangements. All of these micro-optical magnification arrangements have a motif pattern that, when viewed with a micropattern and properly cooperating observation grid, reconstructs a particular target image.

As described in more detail in the above-mentioned publications and patent applications, it is possible to create attractive magnification and shifting effects with a number of naked eyes resulting in a high recognizable value and a high counterfeit safety of the safety elements produced here. For example, the grating parameters of the motif image and the observation grid can be used to produce the effect of a straight parallax shift where the best motif moves vertically and not parallel to the direction of inclination, as is intuitively expected when the depiction arrangement is tilted. Can be mutually cooperative

Here, in a variant of the invention, it can be provided that the safety element has a line width between about 1 μm and about 10 μm and its visual appearance comprises a micropattern that is varied in the radiation deformation region. Here, the micropattern advantageously forms a motif image which is divided into a plurality of cells, at least inside or at least outside the radiation deformation region, each of which is arranged an imaged region of the specified target image. Here, the lateral dimension of the imaged area is preferably between about 5 μm and about 50 μm, particularly between about 10 μm and about 35 μm.

Moreover, an observation grid composed of a plurality of observation grid elements is preferably provided for reconstructing the specified target image when the motif image is observed with the aid of the observation grid, and the lateral dimension of the observation grid element is beneficial. Between about 5 μm and about 50 μm, specifically between about 10 μm and about 35 μm.

The change in the radiation strain region can be configured, for example, in the selective demetallization of the metal layer which makes the micropattern of the motif image recognizable. In another variant, the micropattern can be colored and the color of the micropattern is varied in the radiation deformation region. Here, through the action of radiation, in particular, the first color can be transformed into a second color. One of the two colors can also be transparent, in particular the best color can be bleached by the action of radiation and thus become transparent, or transparent areas can be dyed through the action of radiation and therefore colored Can be done.

In an advantageous embodiment, the micropatterns inside and outside the radiation deformation region each depict a different motif, particularly a different pattern, character or code. Changes between different patterns, characters, or codes then occur in registers fully aligned with the cut edge of the window.

To this end, the micropattern is advantageously placed in a two-layer lacquer system with two stacked lacquer layers having substantially the same refractive index. Here the J motif image is embossed with the lower rocker layer and the first motif image with the upper rocker layer arranged above the lower rocker layer. In the radiation deformation region, the upper rocker layer is removed so that the first motif of the upper rocker layer, which is outside the Jay motif of the lower rocker layer and the radiation deformation region, can be visually recognized.

In another variant of the invention the following is provided:

The safety element comprises multiple reflective first micro-imaging elements arranged with the ground in the observation element pattern and conductive second micro-imaging elements arranged with the ground in the observation element pattern,

The second micro-imaging element is inside of the radiation deformation region and the first micro-imaging element is outside,

The safety element furthermore comprises a micro-pattern comprising multiple micropatterns arranged in a pattern of microstructures which cooperate with the observation element pattern such that, by means of the first micro-imaging element, the micropattern object is magnified and imaged from the front of the top. Includes pattern targets, and

The area of the object plane outside the safety element is assigned to the second micro-imaging element so that it cannot be recognized when the micropattern of the micropattern object is observed from the floor by means of the second micro-imaging element, In order to achieve this, an additional micropattern object having multiple micropatterns can be positioned in the object plane region such that the additional micropattern object is enlarged and imaged in front of the bottom by means of the second micro-imaging element.

Here, in particular, the first micro-imaging element is developed with a concave microreflector and / or the second micro-imaging element is developed with a microlens. Further details and advantages of this combination of microlenses and concave microreflectors can be found in German patent application DE # 10'2009'022'612.5, the disclosure of which is incorporated herein by reference.

According to the invention, the shape of the window is not limited. In all embodiments, this can be developed specifically in the form of patterns or in the form of letters or codes. If the window is formed by a dog ball, or if the window comprises a dog ball, then also, as described in German patent application DE # 10 2009 011 424.6, the disclosures of which are incorporated by reference herein. Likewise, screened balls can be used to be particularly advantageous. If the opening ball is formed by such a line grid composed of a plurality of parallel cutting lines, then the resistor effect described above is more particularly pronounced due to the large number of transitions from the support to the ball.

In the present description, a reference is typically made of an open ball, and as is also clear from the embodiment, the ball may be composed of a plurality of parts and may also be referred to as a group of a plurality of balls.

Alternatively or additionally to the window, the copy variant area is also advantageously developed in the form of a pattern or character or code. This pattern, character or code of the copy deformation area and the window is particularly advantageous or correlated, for example one supplementing the other to form a complete motif.

In a preferred development, a foil element is applied on top of a data storage medium having a laser-ablable adhesive layer, and it is provided that the laser-ablable adhesive layer is removed in the area of the window. In this way, a particularly clear visual appearance can be achieved in the window.

The invention also includes a method of producing a data storage medium having the following method steps:

a) providing a data storage medium substrate having a window extending from the bottom to the top of the data storage medium substrate and a foil element having a safety element,

b) covering the window on top of the data storage medium substrate with a foil element, in such a way that the portion of the safety element lies on the window and the portion of the safety element lies next to the window, and

c) adversely affecting the safety element through the window and from the bottom of the data storage medium substrate with electromagnetic radiation to modify the visual appearance of the safety element in the radiation deformation region lying on the window.

Here, in step c), the safety element preferably interferes with laser radiation, in particular UV boxer, visible radiation or near infrared radiation with a wavelength up to 1.5 μm.

In step b), the foil element is advantageously applied to the top of the data storage medium with a laser-ablable adhesion, and the adhesion present in the area of the window is removed in step c) by laser piracy.

If the window is formed by an opening ball or if the window comprises an opening ball, then in step a) the opening ball is preferably subjected to laser cutting with a cutting laser, preferably at a wavelength of about 10.6 μm. It is introduced into a data storage medium ply containing a dog hole by or by punching or into a data storage medium substrate.

In creating the open ball, the area or edge of the ball on the bottom of the data storage medium substrate or data storage medium ply also incorporates a register effect to coalesce the ball on both sides of the data storage medium or data storage medium ply. It can be dyed or modified through. To this end, preferably,

The data storage medium substrate or data storage medium ply is provided with a laser-deformable marking substrate at least in the vicinity of the dog hole to be produced,

The dog opening is introduced into the data storage medium substrate or the data storage medium fly by the action of laser radiation, and

The laser-deformable marking substrate is deformed in the vicinity of the ball by the action of laser radiation.

Here, the marking substrate can only be deformed within the ball edge area immediately adjacent to the ball, so that the laser deformation area can also exhibit some small distance from the ball. Preferably, the laser deformable marking substrate is itself deformed by the cutting laser beam when opening holes are created in the data storage medium substrate. Here, this fact is used for an advantage sufficient to modify the marking substrate arranged at the edge region or near the ball where the laser energy is cut off in the outer region of the profile of the cutting laser beam simultaneously with the laser cutting process. . In this way, complete registration of or near the ball and laser modified edge areas is automatically guaranteed.

Alternatively or additionally, in the same operation, a laser can be introduced into the support through the laser module, on the one hand with higher laser energy, and on the other hand a laser with a lower laser deformable marking substrate. It can be transformed into energy near the ball. Since both steps are performed with the same operation, a highly accurate registration (less than 0.4 mm offset, in particular less than 0.2 mm and even less than 0.1 mm) of the ball and laser modified neighborhood is achieved.

Further details and advantages of this method can be found in publication WO # 2009 / 003587-A1, the disclosure of which is incorporated herein by reference.

Data storage media may be of particular value, such as banknotes, especially paper banknotes, polymer banknotes, or foil compound banknotes, credit cards, bank cards, cash cards, authorization cards, personal ID cards, or ID cards such as Passport individual pages. Can be a document.

Further exemplary embodiments and advantages of the present invention are described in detail below with reference to the drawings, in which descriptions of sizes and proportions are provided to enhance their clarity. Other example embodiments are not limited to use in the specifically described forms, moreover, may also be combined with each other.

1 is a schematic diagram of a banknote in accordance with an exemplary embodiment of the present invention,
2 is a cross-sectional view of the banknote along the line II-II of FIG.
3 shows an example and a manufacturing sequence of visual and content-based interactions between a ball and a hologram in (a)-(c),
Fig. 4 shows a cross-sectional view of the safe banknote according to the present invention in (a), and in (b) and (c) respectively, it is a plan view of the top and bottom of the safe banknote in the area of the hologram or opening ball,
5 shows an intermediate step in the manufacture of a security note in accordance with the present invention, (a) is a plan view of the safety element to be applied, and (b) is a plan view of the security note before application of the safety element, and (c) and (d) show the closed safety notes in plan and cross-sectional views,
6 shows an intermediate step in the manufacture of additional security notes according to the invention, represented by (a) and (b),
7 is a plan view of a safe banknote in accordance with an exemplary embodiment of the present invention,
8 is a bottom view of a safe banknote in accordance with an additional exemplary embodiment of the present invention,
9 is a cross-sectional view of a micro-optic depiction arrangement in accordance with an exemplary embodiment of the present invention;
10 is a moiré enlargement arrangement with micromotive elements of different color impressions inside and outside the ball,
11 is a micro-optic depiction arrangement according to the invention, in which a change in the depicted motif image occurs at the edge of the dog ball, in a cross section in (a) and in a plan view in (b),
12 and 13 illustrate two exemplary embodiments of the present invention formed on the basis of a combination of microlenses and concave microreflectors.

The invention will next be described using banknotes as an example. To this end, FIGS. 1 and 2 show, in plan and cross-sectional view, a schematic diagram of a banknote 10 provided with a window in the form of an open ball 14 extending from the bottom 16 of the banknote 12 to the top 18 thereof. On top 18 of banknote 12, opening ball 14 is covered with foil strip 20 (foil strip).

Although the present invention is described below using examples of opening balls in banknotes, the present invention is not limited to this embodiment. Moreover, the window of the data storage medium may also be formed by transparent areas of the data storage medium that enable visual through views, such as the see-through window of the polymer banknote. In a multi-ply data storage medium, the window can also be used for the transparent areas in the first data storage medium ply and the openings in the first data storage medium ply, such as for example, a completely non-transparent ink absorbing layer of paper plies and composite banknotes. It can be formed by a combination.

In FIGS. 1 and 2 the foil strip 20 comprises a safety element in the form of a metallized hologram 22 partially overlying and partly overlying the dog opening 14. To this end, hologram 22 typically represents an area larger than opening ball 14, and as shown in FIGS. 1 and 2, foil strip 20 covers the area that hologram 22 completely covers ball 14 and also contacts ball 14. Overlap is applied to banknote 12.

In an exemplary embodiment, the portion of hologram 22 that lies on opening hole 14 fills laser deformation area 24 where the visual appearance of hologram 22 is deformed by the action of laser radiation, and in accordance with the invention is a complete register to opening hole 14. Form.

As will be described below with reference to some specific exemplary embodiments, this parallels the shape or contour of the opening ball 14 with the motif depicted by the holograms 22, 24 without a register change, in this way, 14 and the hologram motif 22 makes it possible to create visual or content-based interactions. In this way, since the full alignment of the two elements, ball 14 and laser deformation zone 24, is present as a high barrier against potential counterfeiters, both attention and recognition of holograms 22 and 24 and their counterfeit safety are increased.

The best example of a visual and content-based interaction between a ball and a hologram and a manufacturing sequence are described with reference to the top view in FIG. 3.

In producing the security paper of the present invention, with reference to FIG. 3A, the foil strip 30 first comprises a metallized hologram, for example a motif with mountain chain 34 and sky 36, which are only schematically shown in the figures. A true-color hologram 32 is provided. Furthermore, as shown in FIG. 3B, a multi-opening hole 42 depicting a sun with concentric rays like motifs is introduced into the security paper 40 by laser cutting. It is also possible to introduce a simpler shape into the security paper by punching instead of laser cutting.

Foil element 30 with hologram 32 is applied to top 47 of security paper 40 such that ball 42 is located within the area of sky 36 of hologram 32. The foil element 30 is then disturbed from the bottom of the security paper 40 through the ball 42 with laser radiation, for example a pulsed Nd: YAG laser at 1.064 μm and in this way, the metal layer of hologram 32 It is demetallized in the region on 42.

The demetallized region of the hologram then forms a laser strain region 38 in which the visual appearance of hologram 32 is modified, as shown in FIG. 3C. Since the ball 42 acts as a mask for the demetallization of the hologram 32, the laser deformation area 38 is registered completely with the cut edge of the ball 42.

When applying foil element 30 to security paper 40, an unavoidable registration error is taken by the sky 36 motif portion of hologram 32-which cannot be detected by the observer-but they are between the ball 42 and the laser deformation area 38. No registration error is affected. In this way, the laser deformation regions 38 and the holes 42 can be co-operated in the design without considering registration errors. In the exemplary embodiment in FIG. 3, the laser deformation region 38 cooperates with the ball 42 visually and in terms of the content, for example, where both regions depict the same motif (the sun with a comb) without offset. In the context of the present invention, more complex interactions can of course also be generated as described in more detail below.

In one development, a dye or characteristic substrate may be provided around the expected laser deformation area 38 to vary the visual impression of the laser deformation area 38 as desired. The peripheral region of the laser modification region 38 may be provided with an optically variable layer such as a color-transition liquid crystal layer. After application to the security paper and demetallization in the area 38, the ball 42 then shows light when viewed through, while the optically variable effect of the liquid crystal layer is clearly pronounced when the security paper 40 is placed on a dark background . Here, the desired color impression of the liquid crystal layer can be set, for example, through the selection of the liquid crystal material and the thickness of the optically variable layer.

FIG. 4 illustrates yet another development of the exemplary embodiment in FIG. 3, wherein through the register effect, the opening hole 42 is incorporated on both sides as well as on one side of the security paper 40. Here, FIG. 4A shows a cross section through the security paper 40, and FIGS. 4B and C show a plan view of the top and bottom of the security paper 40 respectively in the area of the hologram or the opening hole.

In order to provide a resist effect on both sides of the security paper, before cutting the opening hole 42, the security paper 40 changes its color from transparent to red, but through the action of radiation of a CO ₂ laser at 10.6 μm, but Laser deformable marking substrates, which do not change by laser radiation at 1.064 μm or 532 nm, are provided in the periphery region 44 of the ball to be produced.

If the ball 42 is cut into the security paper 40 from the bottom 46 with a CO ₂ cutting laser, then due to the Gaussian beam profile of the laser beam, the critical energy for the deformation of the marking substrate from transparent to red is It is further exceeded at the edge area 48 of the ball 42. In this way, a ball 42 with a surrounding red boundary 48 on the bottom 46 of the security paper 40 is thus generated.

In order to complete the design 50 of the floor 46, the security paper 40 is not the critical energy required for cutting but only the threshold for color deformation is exceeded, so that an additional colored area 52 is formed on the floor 46. The lower laser energy CO ₂ laser radiation can optionally be further hindered. Since the cutting of the ball 42, the coloring of the edge area 48 and the coloring of the non-cutting area 52 are performed with the same cutting laser beam in the same work step or the same operation, the colored areas 48, 52 and the ball 42 are shown in Fig. 4C. It is a mutually complete resist as shown. For a more detailed description of the laser deformable marking substrates that can be used for this development and for further modifications of the coloring of the perimeter area or border of the opening hole, the publication WO is incorporated by reference in this description. Found in 2009/003587 A1.

After the application of the foil element 30 in FIG. 3A to the security paper 40 in FIG. 4A and the demetallization of the hologram in the laser deformation region 38, the visual appearance shown in FIG. 4B corresponding to the appearance in FIG. It is formed on the top. Design 50 of floor 46 indicates that the marking substrate in zone 44 does not respond to the radiation of the Nd: YAG laser used for demetallization, or energy, more specifically exposure (energy per unit area), is not sufficient for the reaction. Because it does not deform in demetallization. The latter applies in particular when heat-reactive dyes are used.

In addition, the finished security paper is a ball 42 that is incorporated from the top to the bottom, the visual appearance shown in Figs. 4B and 4C, the register effect, respectively, on both sides as a complete picture (in sundown and wheeled wheels). appear.

The radiation deformation region of the safety element may cover the entire area of the dog opening, as in the exemplary embodiment described further. However, the radiation deformation region may also be present only in some areas of the dog ball, and thus form a sub-pattern inside the dog ball. In order to form such a radiation deformation region that is completely registered as a ball and has a sub-pattern, for example, the following procedure can be used:

In the exemplary embodiment in FIG. 5, foil element 60 is first provided with safety element 62 in which first and second fractional regions 64 and 66 are shown and interact to a different extent than the electromagnetic radiation used for modification. To this end, the fractional areas 64, 66 are metallized gratings in which, for example, their grating lines are arranged rotated at 90 ° relative to each other as shown in FIG. 5A via another crosshatching of the fractional areas 64, 66. Can be filled with a pattern. Here, the shape of the fractional regions 64, 66 forms the desired motif, for example the string "PL" as depicted in Figure 5A.

Foil element 60 is then applied to security paper 70 with opening hole 72 (FIG. 5B), and is interrupted from the bottom of security paper 70 through opening hole 72 with linearly polarized laser radiation of the Nd: YAG laser. Crazy

If the polarization plane of the laser radiation is properly oriented, the laser radiation is absorbed more strongly by the fractional region 64 than by the fractional region 66, so that the energy or power of the laser radiation is fractional region 64 Is sufficient to demetallize, while this has no effect on demetallization in the fractional region 66 which absorbs very weakly. In this way, in the region of the hole 72, only the fractional region 64 is to be selectively demetallized.

Since the opening hole 72 acts as a mask for zone-specific demetallization, the laser deformation zone 74 formed by the demetallized zone of the safety element 62 is completely registered as the cut edge of the hole 72. Area 66, which is not demetallized by laser radiation, continues without any offset from outside the ball 72 into the area of the ball 72, as depicted in plan view in FIG. 5C and in cross section in FIG. 5D.

In an advantageous embodiment, other interactions of the fractional regions 64, 66 may be achieved through gratings laterally declared differently into one fractional region with high absorption and another region that does not demetalize as having low absorption. Can be. This corresponds to the embodiment shown in FIG. 5. A particularly high absorption contrast between these fractional regions is achieved when the surface plasmon bipolarity (SPs) is excited in one grating fractional region, and the other fractional region does not allow for this resonance excitation. Laser radiation polarized in a straight line of a predetermined wavelength at any angle of incidence is preferably suitable as a beam source. SPs result in total absorption of incident TM polarized light (E-vector is perpendicular to the grating line). For highly conductive metallic gratings, TE polar light (the E-vector is parallel to the grating line) is hardly absorbed. In this way, an absorption contrast of greater than 10, which is> 100 in the infrared region, can be achieved through gratings with fragmented regions that are oriented differently to 90 °. In addition to the precious metals Au, Ag, Pt, Al, Cr and Ni are also particularly suitable for demetallization.

For example, orthogonal reflection gratings with TM polarization as a function of 1 μm period and 0.6 μm trench width, 1,064 nm wavelength incidence radiation, 1 ° incidence angle and trench depth are applied to metals Au, Al, Ag and Cu. Maximum absorbance, for example, absorbance almost reaching 100% maximum absorbance at a trench depth of about 110 nm for Ag and Cu.

Since the position of SPs in the wavelength spectrum depends not only on the grating period but also on the grating profile and the optical constant, the absorbance difference can also be achieved in the fractional region where these variables of the grating vary. Moreover, it is possible to achieve lower absorption of TM polarized light and high absorption of TM polarized light through a grating profile of an appropriate design. Here, the absorption of the TM polarized light is based on the resonance effect which is particularly solidified in the deep grating pattern (trench depth> period / 2).

Other interactions of the fractional regions 64, 66 can also be achieved in more different ways, for example, via other surface-enlarging reliefs. In this case, the selectivity is based on the fact that when the metal layer is vapor deposited on a different coarse relief phase, the thinner the relief developed, the more coarser the metal layer becomes. Moreover, in coarser patterns, the incident laser radiation is generally reflected more often and therefore consumes more energy for metallization so that the coarser coarse, among other things, can already be demetallized with lower laser energy. do. Aspect ratio is key here. The larger the side ratio, the better demetallization can be performed.

Fractional regions 64, 66 with coarse reliefs (fragmental regions 64) and fine reliefs (fragmented regions 66) can thus be developed to facilitate selective demetallization of only fragmentary regions 64. Moreover, details of the selective removal of only one or more of the fragmentary regions of the two are described in publication WO # 2006/079489 A1, the disclosure of which is incorporated herein by reference.

Additional possibilities for creating fragmented areas in the safety element that interact to different degrees are based on the use of metalized embossing patterns with systematically introduced rising and falling. To this end, FIG. 6 shows an exemplary embodiment in which the foil element 90 has been applied by means of hot-melt bonding 84 to a secure sheet 80 having opening holes 82. Foil element 90 includes support foil 92 provided on one side with a UV cured embossed locker layer 94.

Embossing patterns with rising 96 and falling 98 are embossed in the embossed locker layer 94. Here, the term rise and fall is referred to the surface of the support foil 92 such that when viewed from the surface of the support foil 92, the elements appearing downward in FIG. 6A constitute the rise, which rises above the drop 98.

In an exemplary embodiment, rise 96 additionally represents the micro relief in the form of the desired hologram. The entire embossed pattern with rising 96 and falling 98 is also provided with a metal layer 100 consisting of aluminum, for example, forming a holographic metallization for the micro relief of rising 96.

The metalized embossing pattern is further applied in close proximity to the laser beam absorption and / or laser beam reflection locker 102 which fills down 98 of the embossing pattern. The locker 102 may be, for example, a high temperature safety UV locker in which an infrared absorber with maximum absorbance in near infrared is dispersed. After this application, the applied lacquer is removed from the surface of the embossing pattern, removed with a roller or wiper, and a technically unavoidable, thin toning film remains normally on the raised 96 of the embossing pattern. Along with this, a metallized embossing pattern is obtained, as shown in FIG. 6A, with the lacquer application 102 completely filling the drop 98 of the embossing pattern and remaining with a thin toning film on the rise 96.

After application to the security paper 80, the foil element 90 is disturbed from the bottom of the security paper 80 through the opening 82 with laser radiation, e.g., Nd: YAG laser radiation, as indicated by arrow 86 in Figure 6a. .

Through the action of laser radiation 86 on the metallization 100 applied with the lacquer, the elevated region 96 is demetallized while the metallization is preserved in the lowered region 98. Specifically, due to the laser-absorption and / or laser beam reflection additions to the locker 102, insufficient laser power reaches metallization 100 within the drop 98 to trigger demetallization here. In contrast, the metallization of elevated 96 applied only by a thin toning film accepts a high energy input and becomes demetallized. The thin toning film here can further promote demetallization because its absorption is mainly greater than the absorption of the metal layer 100 itself.

Along with this, the security shown in FIG. 6B, via laser radiation, constitutes a laser deformed region 112 having a modified visual appearance that is fully deregistered with the cut edge of the ball 82 in the area above the ball 82. Document 110 is created. The area formed by descent 98 continues from outside the ball without any offset within the area of the ball 82. Thus, the appearance of the security document 110 mainly corresponds to the diagram in FIG. 5C. For example, falling 98 may form the molecular sequence “PL” and thus corresponds to the fragmentary region 66 in FIG. 5C, while in the micropattern of rising 96, the background hologram corresponding to the fractional region 64 in FIG. 5C. Can be encoded.

Additional details and variations of the patterning method on the basis of metalized embossing patterns with rising and falling are described in patent application PCT / EP2009 / 00882, the disclosure of which is incorporated by reference in this description. Lost

The embodiments in FIGS. 5 and 6 allow for a number of variations and modifications derived from the possible embodiments described in references WO # 2006/079489 # A1 and PCT / EP2009 / 00882. For example, unlike FIG. 6, non-demetallized descent may also indicate micro relief, or only descent, but may be provided with no microsub irradiation. Patterns in embossed lockers can generally also be recognized without metallization. However, if the locker 102 in FIG. 6 exhibits a refractive index similar to that of the embossed locker 94, this pattern can also be developed to be unrecognizable.

In an additional variant, no pattern is provided in the metal region. To this end, for example, the pattern shown in publication WO # 2006/079489 (FIG. 5) has been chosen so that they are poorly visible to the naked eye or the rising and falling (FIG. 6) used for metallization is added to the additional pattern. Not provided. In both cases, after demetallization, in effect, the visual appearance for the safety element 120 shown in FIG. 7 provides the visually identical appearance of the fractional regions 122, 124 interacting differently outside the opening hole 126. . Fractional regions 122 and 124 allow only visually differentiation inside the ball 126, where the most fractional region 122 is deformed by laser radiation and forms a radiation deformed region 128 having a modified visual appearance. In FIG. 7, for the sake of detail, in the outer region 125 of the ball, some of the fractional regions 122, 124 are indistinguishable, shown in dashed lines.

In the embodiment according to FIG. 6, the printing ink can also be used as a layer to absorb laser radiation and prevent demetalization. As in the bottom view of the security paper according to the present invention shown in FIG. 8, in this way the pattern 130 painted on the floor can be observed in the form of radiation deformation area 112, ie, accurate registration with demetallization and opening hole 82. Can be.

Here, for the layer structure, an embodiment in which metallization is placed on the foil and the foil is placed on the printing ink, or an embodiment in which metallization is placed between the foil and the printing ink, or metallization is placed on the printing ink and the printing Ink may be contemplated embodiments in which the ink is placed on a foil. In all three embodiments the visual appearance corresponds to that of FIG. 8.

If the laser-absorbing lacquer in Fig. 6 is selected to be colored and the pattern is introduced into the laker, a two-color inverse motif registered as a hologram or matte pattern can be introduced. Here, if a variant in which the rocker protects the metallization against laser radiation is selected, then a visual impression is formed when viewed from the top, as in FIG. 5C, and a visual impression as seen from the bottom, as in FIG. 8. It is formed.

Alternatively, as also described in more detail in application PCT / EP2009 / 00882, a variant in which metallization is supported by lacquer 102 can be selected. The lacquer used here is preferably thinner, in order to be able to easily make a transparent appearance. Non-transparent lacquers can lose the see-through effect of dog dogs.

The features described in connection with FIGS. 5 and 6 also employ a mutual combination. Additional design elements compared to the surrounding area may then appear and / or disappear in the dog ball.

It is possible to use the embodiments according to the invention with particular advantages in micro-optical moiré type enlargement arrangements or micro-optical depiction arrangements that can be developed specifically as a modular enlargement arrangement. The basic principle of this depiction arrangement is described in publication WO 2009/000528 A1, the disclosure of which is incorporated by reference in this description.

In the exemplary embodiment in FIG. 9, the foil element 140 is applied by means of hot-melt adhesion to the security paper 160 having the opening hole 162. The foil element 140 comprises a support foil 142 provided on top of it with a grid-like arrangement of microlenses 144 forming a two-dimensional grating with preselected symmetry on the surface of the support foil. Microlenses 144 designed spherically or non-spherically preferably exhibit a diameter between 5 μm and 50 μm, in particular only between 10 μm and 35 μm.

The bottom of the carrier foil 142 is arranged with a motif layer 146 comprising a motif image with micromotive element 148, which is further divided into a plurality of cells. The arrangement of the grating cells likewise forms a two-dimensional grating with preselected symmetry. The diameter of the grating cell and the grating period of the motif image are of the same size as that of the microlens 144, so preferably in the range of 5 to 50 mu m and in particular in the range of 10 to 35 mu m, the microlens 144 As such, micromotive element 148 is not visible to the naked eye.

In the case of a moiré enlargement arrangement, the grating of the grating cell differs somewhat from the grating of the microlens 144 in its symmetry and / or in the magnitude of its grating parameter, and the moiré deformed image of the motive element 148 is a motif. When the image is observed, it is generated according to the type and size of the offset. A magnification arrangement constitutes a generalization where the motif image does not need to consist of gratings of individual motifs repeated periodically. For the functional principle and details of the modular expansion arrangement, reference is made to the above-mentioned publication WO # 2009/000528 A1.

In the exemplary embodiment in FIG. 9, the motif layer 146 is basically an embossed locker layer 150 having a rising 152 and a falling 154 first applied adjacently to the metal layer 156, as already described in connection with FIG. 6. It includes. In the exemplary embodiment in FIG. 9, the micromotive element 148 is accurately formed by the lowering 154 in the embossed locker layer 150.

As in FIG. 6, the metalized embossing patterns 150, 156 are applied with a laser beam absorption rocker 158 that fills the down 154 and forms a thin toning film on the rising 152. Foil element 140 is then applied to secured paper 160 and continuously disturbed from the floor through opening 162 with laser radiation. In this manner, ascending 152 is demetallized in a complete register in the region on cavity 162, while metal layer 156 is retained within descending 154. The hole 162 outer metal layer remains completely unchanged on both rising 152 and falling 154.

In closed security paper, when observed, the moiré enlarged micromotive element 148 (falling 154) can only be recognized inside the ball 162 against the background of the demetallized rising 152, whereas they Due to the lack of contrast between the metalized rises 152 it cannot be perceived outside the ball 162.

Along with this, for the exemplary embodiment in FIG. 9, the moiré, visual appearance as depicted in FIG. 7, migrates according to the magnifier effect selected when the security paper is tilted, for example, with a straight parallax with respect to the oblique direction. As a magnified microelement 148, but according to star 124 is obtained. Since ball 162 acted as a mask for the demetallization of ascension 152, a change in appearance from star 124 to a uniformly appearing metal layer occurs in each case exactly at the cut edge of ball 162, independent of the slope of the security paper. .

If, for example, the embossed locker layer 150 is additionally provided as a micro relief in the rising phase, then an appearance can also be created with a magnifying glass effect corresponding to FIG. 5C. The letter "PL" then transitions due to the magnifier effect, and the demetallization appears exactly at the boundaries of the opening hole. Inside the ball 162, the moiré enlarged micromotive element (falling) can then be perceived against the background of the demetallized rise, and outside the ball 162 they can perceive the background of the rise of the micro relief. For example, form a background hologram.

If the laser-absorbing lacquer in Fig. 9 is selected by coloring, then the embodiment already described in connection with Figs. 5 and 6 can also be realized in the micro-optical depiction arrangement. If the back side of the support foil is also laminated with a lens, then it can also be a back side with a micro optical magnifier effect.

The demetallized regions may also be arranged spaced apart from the micropattern so that in the region of the open hole, an inverse pattern formed by the demetallized regions arranged in the metallized inner pattern shape is made. The pattern-shaped demetallized regions can be designed, for example, in the form of geometric patterns or in the form of alphabetic arrangements.

FIG. 10 shows an additional exemplary embodiment of moiré magnification arrangement 170 configured in part with the micro-optical magnification arrangement in FIG. 9, which is a corresponding element provided with the same reference sign. When the moiré magnification arrangement 170 is observed in FIG. 10, the moiré magnification microelements 174, 176 can be perceived inside and outside the ball 162, but their color impressions are different.

In this embodiment, the motif image of the magnification arrangement is comprised of a colored motif layer 172 with micromotive element 174, the color of motif layer 172 being deformable by the action of laser radiation. To this end, the motif layer 172 is, for example, laser deformable, which is available to those skilled in the art for other features, in particular their surface color, color change under laser action, critical energy and the required laser wavelength. Pigments.

After application of the foil element with the motif layer 172 on the security paper 160, the micromotive elements 174 initially all have the same starting color. Due to the laser impact from the bottom of the security paper 160 through the ball 162, a color change is then induced in a complete register in the motif layer 176 in the area of the ball 162, where the microelement 176 changes its color. . When magnification arrangement 170 is observed, a combination of the moire magnification microelement 174 of the highest color on the outside of the ball and the moire magnification microelement 176 of the color J on the inside of the ball are thus shown.

 The color change can consist not only of the transformation of the first color into the second color, but also of the transformation from the transparent motif layer to the colored motif layer or the decolorization of the colored motif layer. In the case mentioned earlier, a colored magnifying glass effect is created that is visible only on the ball and is registered completely as a ball, and in the latter case it is visible only on the outside of the ball and finishes exactly at the cut edge of the ball. The effect is created.

The use of laser radiation is not essential for the discoloration or discoloration of the lacquer, and furthermore the color change can also be induced by UV or IR exposure. The support foil 142 and / or lacquer of the microlens 144 is preferably provided with a suitable UV or IR absorber for the lacquer in these variants that have not already been bleached through sunlight.

FIG. 11 illustrates an additional exemplary embodiment of the present invention wherein the micro-optical depiction arrangement 180 accurately represents the change in the motif image depicted at the cut edge of the opening hole 162 of the security paper 160.

Outside of the opening hole 162, as depicted in the top view of FIG. 11B, the first motif image constituting the first moiré magnification micromotive element 182 in the form of a number column “50” can be observed. Thus, the first micromotive element 182 takes the information of the opening opening 162, which is likewise expanded in the form of the number string " 50 ".

Inside the opening hole 162, a J Motif image composed of J. Moirre magnified micromotive element 184 in the form of a euro symbol "? &Quot; The first and second micromotive elements 182, 184, or blank 162 and the second microelement 184 thus complement each other in the form of a denomination of banknote "50?". The change between the first and second motif images takes place in a complete register at the cut edge of the dog ball 162.

To produce a complete registration of the image change, as shown in FIG. 11A, a foil element 190 is used in which a two-layer lacquer system with two stacked lacquer layers 192, 194 of the same refractive index on the bottom of the support foil 196 is arranged. It is done. Here, the first microelement 182 is present in an embossed pattern in the upper rocker layer 192 when viewed from the support foil 196 and the second microelement 184 is embossed in the lower lacquer layer 194 when viewed from the support foil 196. Exists as. On the opposite side of the support foil 196 is provided a grid of microlenses 144, which cooperates with the grid of the micromotive elements 182 and 184 as already described.

In the area of the ball 162, the top locker layer 192 of the locker system is ablated in a complete register by laser impact of the foil element 190 from the bottom of the security paper 160 through the ball 162. Thus, when the periphery of the ball 162 is observed through the microlens 144, only the J micromotive element 184 can be seen inside the ball in the form of a “?” Symbol present in the lower locker layer 194 (FIG. 11B).

Outside the ball 162, two rocker layers 192, 194 are present stacked directly on top of each other. Since they exhibit the same refractive index, the light passing from the embossed pattern 184 at the interface of the rocker layers 192, 194 is unaffected, so the J micromotive element 184 is not recognizable outside the ball 162. Moreover, only the first micromotive element 182 appears in the form of a recognizable sequence "50" due to the difference in refractive index at the interface between the upper lacquer layer 192 and the bonding layer 198, for example a heat sealing coating layer. . If layer 198 is dyed, then the first micromotive element 182 outside the ball 162 appears colored, and the inner second microelement 184 in the ball 162 is transparent.

Here, the upper lacquer layer 192 is thinly developed to ensure that both the first 182 and the second micromotive element 184 substantially lie on the focal plane of the microlens 144 and appear sharp when viewed.

For simplicity, the first and second micromotive elements 182 and 184 are shown the same shape and size in FIG. 11A, but in practice they are generally not stacked directly on top of one another.

In an additional exemplary embodiment of the invention, the safety element arranged on the foil element is on the basis of a combination of microlenses and concave microreflectors to form a micro-optic depiction arrangement that can be seen both from above and from below. It is formed.

Referring to the schematic cross-sectional view in FIG. 12, such a safety element 201, for example applied to banknotes, has a micropattern 205 embossed on its top 204 and multiple concave microreflectors 208 and multiple micros in cross section on its bottom 207. A support 203 representing the lens 209 is included. The concave microreflectors 208 and microlenses 209 are grids with a fixed geometry, for example hexagonal grids, which are at right angles to the drawing shown in FIG. 12 and are thus arranged to the ground in the observation element pattern.

The support 203 here comprises a PET foil 210 composed of radiation-cured lacquers and on which the first layer 211 representing the micropattern 205 is applied. A J layer 212 composed of radiation-cured lacquers and embossed with the inverse shape of the concave micro reflector 208 and the shape of the microlens 209 is developed on the bottom of the PET foil 210.

The micropattern 205, which forms the micropattern object or micromotive M1, becomes like a grid having a fixed geometry, here a plane perpendicular to the plane of the figure in FIG. 12, for example a hexagonal grid, and thus into a microstructured pattern. Arranged in the ground, in this way the microstructure pattern cooperates with the observation element pattern and both patterns are secured, as described in more detail in the publications WO 2009/000528 / A1 and WO 2006/087138 A1 mentioned above. When elements 201 are observed from the top (in the direction of arrow P1), they are arranged together to form a modular enlargement arrangement or moire-enlarging arrangement, together with micropattern 205 concave microreflector 208. Here, the micropattern object M1 corresponds to the motif image according to that disclosed in WO 2009/000528 A1. For the observer, the micropattern object M1 can be magnified and perceived as a safety feature (target image within the meaning of WO 2009/000528 A1) for observation in the direction towards the top (in the direction of arrow P1).

In order to create the concave micro reflector 208, one side of the second layer 212 facing away from the PET foil 210 is provided with a reflective coating 213, especially metallization, on the area A so that the concave micro reflector 208 develops as a back reflector. . In an exemplary embodiment, the inner surface of the reflective coating 213 of each concave micro reflector 208 or the embossed shape for the concave micro reflector 208 has the shape of a spherical cap having a curved diameter of 38 μm and about 3 μm. . The layer thicknesses of the second layer 212 and the first layer 211 of the PET foil 210 are such that the micropattern 205 is spaced just 19 [mu] m away from the concave microreflector 208 and thus the desired magnified image of the micropattern 205 is influenced to produce safety features. It is chosen to lie on the focal plane of the concave micro reflector 208.

In region B of safety element 201, metal layer 213 is removed by demetallization such that the embossed shape is not a concave microreflector, but rather forms microlens 209. Here, the radius of curvature of the convex surface 214 of the microlens 209 is the same as that for the concave micro reflector 208 and thus, in the exemplary embodiment, measured at 38 μm so that the focal length of the microlens 209 is about 115 μm. The plane E of the focal point of the microlens 209 thus lies outside the safety element 201 so that the micropattern 205 is not visible in the area B when it is observed from the bottom 207 of the safety element 201 (in the direction of the arrow P2).

The microlens 209 is not to image the micropattern 205, but to verify another banknote or to self-certify the banknote of the safety element 201. For self-validation, when viewed in the direction towards the bottom 207, the additional micropattern object is not depicted in the figure so that the image is enlarged by means of the microlens 209 and the banknote is laterally spaced apart from the safety element 201. An additional micropattern object included in the position is positioned in front of the top 204 of the support 203 of the safety element 201 in plane E by bending, buckling or folding the banknote.

To demonstrate another banknote, an additional micropattern image of another banknote may be influenced by the means of the microlens 209 to magnify the image through the bottom 207 so that it can be carried out for the demonstration of another banknote. It is arranged in front of the top 204 of the safety element 201 in plane E.

According to the present invention, the demetallization of the metal layer 213 is carried out after the application of the safety element 201 to the security paper with the opening ball and from the bottom 207 of the safety element 201 through the opening of the security paper as already presented in the above description. It is caused by the radiation effect of 213. In this manner, the transition from micromirror 208 to microlens 209 (areas A and B in FIG. 12) occurs at a complete register at the cut edge of the opening hole.

The concave microreflector 208 and the microlens 209 can also be deployed to the other side, as shown in cross section in FIG. 13. The layer structure of 210 to 212 corresponds to the structure in FIG. 12, and the mirrored surface of the concave microreflector 208 provided with continuous metallization 213 is shown by thick lines (area A) in FIG. 13. In region B, metallization 213 is partially removed by the radiation effect such that a translucent concave micro reflector 208 'is created there, and is shown in dashed line in FIG. Here, the metallization is added, in particular, on a subpattern, for example a dot or line grating, so that semi-transparent metallization is produced, and completely removed in the fractional region corresponding to this subpattern.

Layer 212 is attached to J. PET foil 222 with UV lacquer layer 223 developed thereon by means of laminating bond 221 and convex face 214 of microlens 209 is embossed in UV lacquer layer 223. Convex face 214 represents a spherical cap with a curved radius of 18 μm. Due to the curvature radius of the convex face 214 of the microlens 209 of 18 μm, the microlens 209 has a focal length of 54 μm corresponding to the spacing between the vertices of the convex face 214 and the micropattern 205 for the selected layer thickness. Indicates

Also, in this exemplary embodiment, the demetallization of the metal layer 213 may be achieved after the application of the safety element 201 to the security paper with the open ball and from the bottom 207 of the safety element 201 through the opening of the paper. Is caused by the radiant influence of foil 222. In this way, it is generated that the transition from the fully metallized micromiller 208 to the translucent concave micro reflector 208 '(the border of the regions A and B in FIG. 13) is completely registered with the cut edge of the opening hole.

On the outside of the ball (area A), micropattern 205 is then visible to the viewer from above (observed in direction P1) through the reflection of the fully metallized micromiller 208. Inside the ball (area B), micropattern 205 is from above and from below, in detail one (observed in direction P1) through the reflection in translucent concave micro reflector 208 'and one (observed in direction P2). ) Can be seen through microlens 209 and translucent concave micro reflector 208 '.

Further details and advantages of the combination of microlenses and concave microreflectors can be found in German patent application DE # 10 # 2009 # 022 # 612.5, the disclosures of which are incorporated herein by reference.

If the foil element is applied to the security paper by means of a hot-melt bond or other bond, then the hot-melt bond 84 is then into the area of the ball 82, as shown for example in FIG. 6 due to registration immunity. It may protrude to some extent. This may cause some blurry appearance in the edge area of the dog ball. This bonding can thus be developed to be laser ablation in all embodiments so that it can be applied adjacently and can be ablation by laser in the region of the ball 82 by deformation. The bonding layer is then completely registered with respect to the hot-melt bonding layer 198 as the cut edge of the ball, for example as shown in FIG. 11A. For this purpose, the bonding is preferably provided with a suitable absorbent for laser radiation.

Instead of simple metallization as described and illustrated in the exemplary embodiments for illustration, a multi-layered system may also be used. If the laser parameters are properly selected, the individual layers can be removed from this layer system in the area of the ball. For example, in a thin film element having a color-transfer effect and typically consisting of a reflective layer, a dielectric spacer layer and an absorber layer, only the reflective layer or also only the absorber layer can be removed by laser action.

Of course, the described modifications can be used not only on secure paper but also on other data storage media having dog holes, for example polymer notes or foil composite banknotes. Here, if only one foil is to be processed by the laser, then the J foil must be transparent to the laser, or the J foil is still not applied in the laser processing step.

10 banknote
12 Banknote Banknotes
14 potters
16 bottom
18 top
20 foil strips
22 hologram
24 laser deformation zones
30 foil strips
32 true-color hologram
34 mountain chain
36 sky
38 laser deformation zones
40 security
42 potters
44 area
46 floors
47 top
48 edge zones
50 designs
52 colored areas
60 foil elements
62 safety elements
64, 66 fractional areas
70 security
72 potters
74 Laser Deformation Area
80 security
82 Dog Balls
90 foil element
92 support foil
94 embossed locker floor
96 rises
98 descent
100 metal floor
102 Laser-beam-absorbing rockers
110 security documents
112 laser deformation area
120 safety elements
122,124 Fractional Regions
125 area outside of the ball
126 potters
128 copy transformation areas
130 colored patterns
140 foil elements
142 support foil
144 microlenses
146 motif layers
148 Micromotif Elements
150 embossed locker layers
152 climb
154 descents
156 metal layers
158 Laser-beam-absorbing rockers
160 security
162 potters
162 linear polarization layer
164 hot-melt joints
170 moiré enlargement arrangement
172 motif layers
174, 176 Micromotive Element
180 micro-optical description arrangement
182, 184 Micromotive Elements
190 foil elements
192, 194 layers lockers
196 support foil
198 junction layer
201 safety elements
203 support
204 top
205 micropattern
207 bottom
208 Concave Micro Reflector
208 'Translucent Concave Micro Reflector
209 microlenses
210 PET Foil
211 copy-hardening lockers
212 copy-hardening lockers
213 metal layer
214 convex surface of the microlens
221 Laminating Splicing
222 PET Foil
223 UV locker layer

Claims (29)

As a data storage medium, especially valuable or endorsement documents;
A window extending from the bottom to the top of the data storage medium,
A foil element having a safety element covering a window on top of a data storage medium, wherein a part of the safety element lies on the window and a part of the safety element lies beside the window,
As a data storage medium having
The portion of the safety element overlying the window represents the radiation deformation region in the register with the window and wherein the visual appearance of the safety element is modified by the action of electromagnetic radiation. 2. The data storage medium of claim 1, wherein said safety element represents a metallized metal layer in a radiation deformation region. 3. The data storage medium of claim 2, wherein the safety element comprises a metallized diffraction line, a metallized luminance diffraction line, a metallized matte pattern, or a thin film element having a color transition effect. 4. The safety component of claim 1, wherein the safety element represents a first and second fractional region that interacts differently with electromagnetic radiation, and the first and second fractional regions are partly over the window and partly the window. Data storage medium characterized by being placed next to. 5. The data storage medium of claim 4, wherein the copy deformation region includes only the most fractional region and not the second fractional region such that the second fractional region exhibits the same visual appearance on and beside the window. 6. A data storage as claimed in claim 4 or 5, wherein at least one of the two sub-regions exhibits a relief in the form of a grating pattern defined by an interference pattern, preferably the direction of the grating line and the grating constant. media. 7. A data storage medium according to any one of claims 4 to 6, wherein at least one of the two fractional regions represents a surface-enlarged relief. 6. A data storage medium according to claim 4 or 5, wherein the first and second fractional regions are formed by raising and lowering the embossing pattern. 9. The data storage medium of claim 8, wherein the lowering is filled with a radiation-reflective and / or radiation-absorbing cover layer. 10. The safety element of claim 1, wherein the safety element comprises a micropattern having a lyle width between about 1 μm and about 10 μm and whose visual appearance is deformed in the radiation deformation region. Data storage medium. 11. The method of claim 10, wherein the micropattern forms a motif image that is subdivided into a plurality of cells, at least within a radiation deformation region, each of which an imaged region of a specified target image is arranged, The lateral dimension is preferably between about 5 μm and about 50 μm, particularly between about 10 μm and about 35 μm. 12. The system according to claim 10 or 11, wherein an observation grid composed of a plurality of observation grid elements is provided for reconstructing a specified target image when the motif image is observed with the aid of the observation grid. The lateral dimension is preferably between about 5 μm and about 50 μm, particularly between about 10 μm and about 35 μm. 13. The data storage medium according to any one of claims 10 to 12, wherein the color of the micropattern is deformed in the radiation deformation region. 14. A data storage medium as claimed in any of claims 10 to 13, characterized in that the inner and outer micropatterns of the radiation deformation region depict different motifs, in particular different patterns, characters or codes. 15. The micropattern of claim 10, wherein the micropattern is present in a two-layer rocker system having two stacked lacquer layers having substantially the same refractive index, wherein the J Motif image is with the lower rocker layer and The first motif image is embossed with an upper rocker layer arranged above the lower rocker layer, and the upper rocker layer in the radiation strain region is outside the Jay motif of the lower rocker layer and the radiation strain region in the radiation strain region. A data storage medium characterized by the fact that the top motif of the upper locker layer is removed to be visually recognized. 10. The method according to any one of claims 1 to 9,
The safety element comprises multiple reflective first micro-imaging elements arranged with the ground in the observation element pattern and conductive second micro-imaging elements arranged with the ground in the observation element pattern,
The second micro-imaging element is placed inside the radiation deformation region and the first micro-imaging element is outside,
The safety element furthermore comprises a micro-pattern comprising multiple micropatterns arranged in a pattern of microstructures which cooperate with the observation element pattern such that, by means of the first micro-imaging element, the micropattern object is magnified and imaged from the front of the top. Includes pattern targets, and
The area of the object plane outside the safety element is assigned to the second micro-imaging element so that it cannot be recognized when the micropattern of the micropattern object is observed from the floor by means of the second micro-imaging element, In order to achieve this, an additional micropattern object having multiple micropatterns can be positioned in the object plane region such that the additional micropattern object is enlarged and imaged in front of the floor by means of the second micro-imaging element. Data storage medium. 17. The data storage medium of claim 16, wherein the first micro-imaging element extends into the concave microreflector and / or the second micro-imaging element extends into the microlens. 18. The data storage medium according to any one of claims 1 to 17, wherein the window is developed in the form of a pattern, a character, or a cog. 19. The data storage medium according to any one of claims 1 to 18, wherein the window is formed by an opening hole extending from the bottom to the top of the data storage medium. 19. The data storage medium according to any one of claims 1 to 18, wherein the window is formed by a transparent area of the data storage medium extending from the bottom to the top of the data storage medium. 19. The data storage medium of any one of claims 1 to 18, wherein the data storage medium is multi-ply and the window comprises a dog hole in at least one data storage medium ply. 22. The data storage medium according to claim 19 or 21, wherein the opening hole is formed by a line grid composed of a plurality of parallel cutting lines. 23. The data storage medium according to any one of claims 1 to 22, wherein the copy deformation area is developed in the form of a pattern, a character or a code. The method of claim 1, wherein the foil element is applied to the top of the data storage medium with a laser-abrasive adhesive layer and the laser-abrasive adhesive layer is removed within the area of the window. A data storage medium characterized by the above. a) providing a data storage medium substrate having a window extending from the bottom to the top of the data storage medium substrate and a foil element having a safety element,
b) covering the window on top of the data storage medium substrate with a foil element, in such a way that the portion of the safety element lies on the window and the portion of the safety element lies next to the window, and
c) adversely affecting the safety element through the window and from the bottom of the data storage medium substrate with electromagnetic radiation to modify the visual appearance of the safety element in a radiation deformation region overlying the window. 26. A method as claimed in claim 25, wherein in step c) the safety element interferes with laser radiation, in particular UV boxer, visible light radiation or near-infrared radiation of wavelengths up to 1.5 μm. 27. The laser-abrasive adhesion of claim 25 or 26, wherein in step b) the foil element is applied to the top of the data storage medium with a laser-abrasive adhesion, and in step c) the laser-abrasive adhesion present in the area of the window. A method for manufacturing a data storage medium, characterized in that it is removed. 28. The method of any one of claims 25 to 27, wherein the window is formed by a dog hole or the data storage medium is multi-ply and the window comprises a dog ball in at least one data storage medium ply, In a), the dog opening is introduced into a data storage medium fly or data storage medium substrate comprising the dog opening, preferably by a laser cutting or punching with a cutting laser at a wavelength of about 10.6 μm. A data storage medium manufacturing method. The method of claim 28,
The data storage medium substrate or data storage medium ply is provided with a laser-deformable marking substrate at least in the vicinity of the dog hole to be produced,
The dog opening is introduced into the data storage medium substrate or the data storage medium fly by the action of laser radiation, and
A laser-deformable marking substrate is deformed in the vicinity of the ball by the action of laser radiation.

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