RU2588446C2 - Marked data carrier - Google Patents

Abstract

FIELD: information technology.

SUBSTANCE: invention relates to a data medium, first of all valuable document, such as banknote, identity card based on smart cards and similar, with substrate and connected to the substrate with a protective element, wherein the data medium contains created due to action of laser beams marking, which has when viewing through altered visual impression in comparison with the reflected light. According to the invention implies that marking is made with the first part of marking by at least one made due to action of laser beams holes in the substrate and is made with the second part of marking in the protective element due to modification section, on which the visual appearance of the protective element is modified by action of laser beams, and the section of modification of the second part marking is in colour register to the hole of the first part of the marking.

EFFECT: first part of marking or completely covered with protective element, or partially covered with protective element and partially located directly near the protective element.

19 cl, 24 dwg

Description

The invention relates to a data carrier, first of all, a valuable document, such as a banknote or an identity card based on a plastic card, with a substrate and a security element connected to the substrate, the data carrier containing a mark created due to the action of laser beams and having a visual change when viewed from the light impression compared to viewing in reflected light. The invention also relates to a method for manufacturing such a storage medium.

Storage media, such as documents protected against counterfeiting, valuable documents or identification cards, but also other valuable items, are often equipped with security features for protection, which allow authentication of the data carrier and at the same time protect against reproduction without permission. At the same time, security features, the authenticity of which is checked for clearance, for example, the long-known watermarks of paper banknotes, allow the user to perform a particularly simple authentication.

On the basis of this, the invention is based on the task of further improving the data carrier of the type indicated at the beginning with respect to its protection against fakes and its visual appearance.

This problem is solved by the data carrier with the features of an independent claim. A method of manufacturing such a storage medium is indicated in another independent claim. Improvements of the invention are the subject of the dependent claims.

The proposed data carrier, primarily a valuable document, such as a banknote or an identity card based on a plastic card, contains a substrate and a security element connected to the substrate, the data carrier containing a mark created due to the action of laser beams and having a different visual impression when viewed through the lumen compared to viewing in reflected light. In accordance with the invention, the marking has a first part formed by at least one hole made in the substrate due to the action of laser beams, and a second part formed in the protective element by a modification section in which the visual appearance of the protective element is modified due to the action of laser beams moreover, the modification section of the second part of the marking is located in the register to the hole of the first part of the marking, and the first part of the marking is either completely blocked by a protective element, or partially a protective element is blocked and partially located directly next to the protective element.

According to the invention, the marking has a visual impression that is changed to the lumen as compared to viewing in reflected light. To consider marking in reflected light, a data carrier, for example, may lie on top of the base when illuminated by daylight or artificial light. For viewing in the light, the data carrier is taken and held in front of a light source. When switching from viewing in reflected light to viewing in light, the visual impression of the marking for the observer changes. The change may, first of all, be to make visible at first the invisible part of the marking when viewed in reflected light, and the part of the mark that becomes visible can reappear independently of the signs visible when viewed in reflected light or supplement or expand the part already visible when viewed in reflected light.

As indicated above, the first part of the marking is at least partially covered by a protective element. With complete overlap, the first part of the marking when examining the front (front) side of the data carrier in reflected light, as a rule, is not visible or practically not visible. When viewed in the light, at least one hole in the first part of the marking appears brightly glowing. When switching from viewing in reflected light to viewing into lumen, an obvious change in the visual appearance of the marking occurs in this way. When the first part of the marking is partially covered by a protective element, when the first part of the marking is partially located directly next to the protective element, due to the part located next to the protective element, the user’s attention is directed to the effect of viewing in reflected light / lumen, which is explained in more detail below.

In a preferred embodiment, the first part of the marking has many straight, parallel or diverging cut lines in the substrate and / or the second part of the marking has many straight, parallel or diverging modification lines in the security element.

Alternatively or additionally, with advantage, the first part of the marking has a plurality of curved, equidistant or diverging cut lines in the substrate and / or the second part of the marking has a plurality of curved, equidistant or diverging modification lines in the security element.

With particular advantage, the cut lines and the modification lines are at least partially adjacent to each other without offset. In a preferred embodiment, all modification lines are adjacent to the cut lines without bias.

In all forms of implementation, the cut lines or the modification lines are preferably made with a width of from 0.05 mm to 1 mm. The distance from center to center, advantageously, is from 0.05 mm to 1.5 mm, preferably from 04, mm to 1.0 mm, in particular approx. 0.7 mm, and the distance from the center to the center can be constant (equidistant cut lines or modification lines) or variable (diverging cut lines or modification lines).

In a preferred embodiment, the modification site is formed by removing the material of the protective element, primarily due to local demetallization of the metal layer or due to local removal of the paint layer. The modification site can also be formed by an irreversible change in the visual properties of the protective element, primarily due to a local change in the visible paint or transparency of the protective element. In the latter case, an irreversible change may consist, for example, in a local transformation of the transparent region into an opaque region.

Preferably, the first and second part of the marking are related to or complementary information. For example, the information of the second part of the marking may repeat the information of the first part of the marking or supplement it with general information.

In one embodiment of the invention, the substrate may be provided with a laser-modifiable marking agent in at least one partial region, and at least one opening of the first marking portion in this partial region may have an edge region modifiable by the action of laser beams. In this case, in a preferred manner, the substrate in the partial section is provided with a marking substance, the visible ink of which is variable due to the action of laser beams, due to which at least one opening of the first marking part in this partial section has a colored edge section. Through the use of different marking agents in different partial areas, edges of different colors can also be created.

Alternatively or additionally, the substrate may be provided with a marking substance, the absorption properties of infrared radiation, the electrical or luminescent properties of which may vary due to exposure to laser beams. The holes of a partial section equipped with such a marking substance, in this case, have an edge section with altered infrared absorption properties, electrical or luminescent properties, which offer another possibility for machine authentication.

Preferably, laser-modifiable pigments producing a specific effect or also laser-modifiable markers without pigments can be used as marking substances. Examples of suitable marking agents, as well as the type and method of their application and incorporation into the substrate and the appearance of an edge with perfect registration when applying laser beams, are described in more detail in document WO 2010/072329 A1, the disclosure of which is included in this application in this regard.

The substrate of the data medium may consist of paper, especially cotton paper. Needless to say, paper can also be used that contains one fraction x of the polymer material in the range 0 <x <100 mass. % In further preferred embodiments, the support is plastic, especially a plastic film, for example a film of polyethylene (PE), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polypropylene (PP) or polyamide (PA). In addition, the film may be uniaxially oriented or biaxially oriented. Orientation of the film, among other things, leads to the fact that it receives polarizing properties that can be used as another sign of authenticity. Aids required for using these properties, such as polarizing filters, are known to those skilled in the art.

In embodiments currently considered to be particularly preferred, the storage medium is a paper and film composite or a film composite in which a substrate and a security element are embedded between two layers of a film. First of all, we consider composites with a three-layer structure with a sequence of layers of film / paper / film or film / film / film.

The security element of the data carrier is preferably a security thread, a label, a transfer element, a security seal or partial metallization. In addition, metallization, in principle, can also be replaced by a metallized paint, for example a metallized paint with metallizing pigments. Also in the case of a metallized hologram or similar diffraction structure, the metallization provided therein can be replaced with such a metallized ink or a high refractive dielectric layer.

In suitable embodiments, the implementation of the modification section of the protective element is made in a metal layer. In the case of a metal layer, it can be a hologram metallization, an absorber or reflector layer of a thin-layer element with color overflow effects, a matte metal structure, or a metal coating of a microstructure, for example, microlens arrays or gratings with a lower harmonic length.

The invention also includes a method of manufacturing a data carrier of the above type, in which:

- prepare the substrate, which is connected to the protective element, and

- the data carrier due to the action of laser beams is provided with a marking which, when viewed from the light, has a changed visual impression compared to viewing in reflected light, moreover

- due to the action of laser beams form the first part of the marking with at least one hole in the substrate, and

- in the same operation, in the register to the opening of the first part of the marking in the protective element, the second part of the marking is formed due to the modification section, in which the visual appearance of the protective element is modified due to the action of laser beams.

The first and second part of the marking are advantageously created by supplying laser beams from an infrared laser, preferably a CO ₂ laser.

According to one improvement, the substrate can be provided with a laser-modifiable marking agent in at least one partial region, whereby at least one opening of the first part of the marking in this partial region is modified by the action of laser beams at its edge regions. Preferably, the anti-counterfeit paper in the partial section is provided with a marking agent, the visible ink of which is variable due to the action of laser beams, whereby at least one opening of the first part of the marking in this partial section is provided with a colored edge part.

Advantageously, a substrate with a modified security element provided with at least one opening is sealed between two films to form a film composite structure.

Other examples of implementation and advantages of the invention are further explained by the example of figures, in the image of which they refused to reproduce in compliance with scale and proportions to increase visibility.

Shown on:

FIG. 1 schematically, a banknote according to one embodiment of the invention,

FIG. 2 is a detailed fragment of a banknote according to FIG. 1 in the field of marking,

FIG. 3 is a cross-sectional view of a banknote along line III-III of FIG. 2

FIG. 4 is a different visual impression of the banknote of FIG. 1 when viewing the front and back sides in reflected light or in the lumen, moreover, showing (A) the visual impression when viewing in the reflected light of the front side, (B) the visual impression when viewing the front side in the lumen, (C) the visual impression when viewed in reflected light of the back side, (D) visual impression when examining the back side of the lumen,

FIG. 5 (A) - (D) - in the image, as in FIG. 4, a different visual impression of a banknote according to another embodiment of the invention,

FIG. 6 - for a banknote according to another embodiment of the invention (A) a visual impression when viewed in reflected light of the front side, (B) a visual impression when viewed from the front side to the lumen,

FIG. 7 and 8 respectively a data carrier in cross section according to other embodiments of the invention,

FIG. 9-12, respectively, is a fragment of a plan view of a data carrier according to another embodiment of the invention,

FIG. 13 - the proposed banknote of the film composite in cross section, and

FIG. 14 (A) to (D) are various embodiments for implementing a raster laser hole.

Now the invention is described by the example of banknotes. In FIG. 1, a banknote 10 is schematically shown for this, in which case a security element in the form of a metallized hologram strip 14 is applied to the banknote paper 12. The hologram strip 14 shows a hologram, which in the embodiment consists of a repeating sequence of portrait 16 and a value of “50” (reference sign 18) banknotes 10.

In the region of the hologram strip 14, the banknote 10 according to the invention is also provided with a marking 30, which, when viewed from the light, has a changed visual impression compared to viewing in reflected light. This altered visual impression is illustrated below in various views of FIG. 4 and cannot be transmitted reliably in the schematic general image according to FIG. 1 according to its nature.

To more accurately describe marking 30 in FIG. 2 shows a detailed fragment of a banknote 10 in the marking region 30, while in FIG. 3 shows a cross section along line III-III of FIG. 2.

What is best recognized in cross section according to FIG. 3, the hologram strip 14 applied to the banknote paper 12 contains a layer of embossing varnish 20 in which the desired hologram structure 22 with portrait 16 and value 18 is embossed, as well as a hologram metallization 24 applied to the embossing 20, for example, from aluminum. The hologram 16,18 thereby represents a reflective hologram that dominates the visual impression when viewing the front side of the banknote in reflected light (Fig. 4 (A)).

It is understood that shown in FIG. 3, the cross section is only a schematic representation, and, for example, a hologram strip 14 or banknote paper 12 may have additional layers, which, as a rule, do not contribute to the visual effect of the proposed marking, and therefore are not shown in more detail here. For example, the banknote backing and / or security element may have one or more layers of glue and / or primer. If these layers are provided, they are removed if necessary due to the supply of laser beams or their appearance is modified.

Also shown in FIG. 3 layers can also be arranged differently. For example, metallization 24 may also be located between the substrate 12 and the varnish layer 20. Such an embodiment, in contrast to that shown in FIG. 3 forms of implementation, has the additional advantage that the hologram structure and metallization are protected due to the location between the substrate and the varnish layer from manipulation and other attempts to fake. Also, such forms of implementation can be applied to the target substrate by translation.

With reference to the top view of FIG. 2, the marking 30 has a two-part structure and consists of the first and second parts of the marking, both of which are created in one operation by supplying laser beams to the banknote paper 12 and the hologram strip 14, and therefore, despite their different nature, have a beautiful register to each other.

As a first part of the marking, the marking 30 comprises a raster laser hole 32, which is formed by a linear raster of a plurality of parallel section lines 34 that extend along the banknote paper 12 and the hologram strip 14. The raster laser hole 32 is generally in the form of a pattern, signs or encoding and in the embodiment has the shape of a maple leaf 36 in a square frame 38.

As its second part of the marking, the marking 30 comprises a modification section 40 in which the banknote paper 12 is not cut, and in which only the metallization 24 of the hologram strip 14 is removed in a plurality of parallel metallization lines 42, and thereby the appearance of the hologram strip 14 is modified.

As best recognized in FIG. 2, fine register lines 42 are fine register adjacent to cut lines 34 located outside the modification portion 40. An excellent register of demetallization lines 42 and cut lines 34 is ensured due to the fact that both types of lines 34, 42 are created due to laser irradiation with the same processing beam in the same operation. Various processing results, namely, on the one hand cutting the hologram strip 14 and banknote paper 12, and on the other hand only demetallization of the hologram metallization 24, are achieved by correspondingly varying laser parameters, primarily laser power and / or cutting speed during the process processing.

As shown in FIG. 3, the area of the cut lines 34 on both sides is respectively covered with a transparent film 50. This coating may include only the area of the cut lines, or may also extend over a larger area, for example, through the entire banknote 10. Such coverage is especially good in in the case of composite banknotes, it is possible to carry out by means of a film / substrate layer structure with a security element / film. Moreover, not only the zone of the cut lines, but the entire protective element 14 is completely located between the composite films 50 and thereby is particularly well protected.

A different visual impression of the banknote 10, when viewing the front and back sides in reflected light or in the lumen, is illustrated in figure 4, and figure 4 (A) shows the visual impression when viewed in front of the reflected side, 4 (B) - visual impression when examining the front side to the lumen, 4 (B) - visual impression when examining the back side in reflected light, 4 (D) - visual impression when examining the back side to the gap.

Referring first to FIG. 4 (A), when viewing the front side of the banknote in reflected light, the reflective hologram 16, 18 of the hologram strip 14 dominates the visual impression. The outer contour 38 of the raster laser hole can be poorly recognized, but the shape of the maple leaf 26 is not, because the perfectly aligned demetallization lines 42 and the cut lines 34 for the eye have only a slight difference in contrast. In the areas of consideration in which the hologram 16, 18 is reconstructed, the hologram already “illuminates” the raster laser hole 32 and the modification section 40. Due to the small difference in contrast between the demetallization lines 42 and the cut lines 34, the internal maple leaf motif 36 also cannot be recognized from viewing angles from which the hologram 16, 18 can only be seen with difficulty.

If the banknote will now be viewed from its front side into the gap, then in a surprising way the design 36 of the raster laser hole 32 comes to the fore, as shown in Fig. 4 (B). A linear raster of the cut lines 34 protrudes in a bright glow against a dark metallization background 24 of the hologram strip 14. Also, the outline of the maple leaf 36 and the demetallization lines 42 can be well recognized by the clearance, but due to the paper substrate 12 modification still available in section 40, lower brightness. In general, the transition from viewing in reflected light to viewing into lumen thus causes a stunning change in the visual appearance of the marking 30.

With reference to FIG. 4 (B), when examining the reverse side of the banknote 10 in reflected light, the design 36 of the scanning laser hole 32 is well recognized due to the cut lines 34 in the banknote paper. The hologram strip 14 and the demetallization lines 42 applied to the front side are not visible on the back side in reflected light, therefore, the inside of the maple leaf 36 appears without structure. If the raster laser hole 32 is not recognized from the reverse side, the reverse side of the banknote can also be provided with a substantially transparent layer, in particular a paint receiving layer.

When viewed from the back side, the visual impression of the banknote 10 corresponds essentially to the front side impression. As shown in FIG. 4 (D), both a linear raster of section lines 34 and metallization lines 42 against a dark metallization background 24 can be well recognized by the clearance.

In order to draw the user's attention to the transition from viewing in reflected light to viewing in transparency, the raster laser hole can protrude laterally from the hologram strip 14. Then, the user recognizes one part of the raster laser hole in the reflected light already in reflected light, and is thereby prompted to review in the light. In this case, another design is surprisingly manifested, namely, the hologram strip 14 hidden in the reflected light or the suppressed part of the raster laser hole. This surprising complementing effect is illustrated in FIGS. 5 and 6 based on two exemplary embodiments.

The embodiment of FIG. 5 is based on the embodiment of FIG. 4, but the raster laser hole 32 of FIG. 5 contains not only the design of the maple leaf 36 in a square frame 38 that is covered by a hologram strip 14, but further comprises a design 60, in which is the value of "50" (reference sign 62) in the ellipsoid frame 64.

This design portion 60 of the raster laser hole 32 is located sideways side by side, but directly adjacent to the hologram strip 14, and thereby is also visible when viewing the front side of the banknote in reflected light, as shown in FIG. 5 (A). If the user now holds the bill in the light so that it is possible to better recognize the design 60, then the design of the maple leaf 36 in the square frame 38 is surprisingly added to the visual impression of the design 60, as shown in FIG. 5 (B).

The visual impression when viewed from the back of the banknote corresponds, in addition to the additionally available design part 60, essentially to the impression according to FIG. When viewed in reflected light, the maple leaf 36 and the virtue value 62 of the scanning laser hole 32 due to the cut lines 34 in the banknote paper, as shown in FIG. 5 (B), can be well recognized. In this case, the inner part of the maple leaf 36 seems to be structureless, since the hologram strip 14 and the demetallization lines 42 applied to the front side are not visible on the back side in reflected light. In addition to the lumen, demetallization lines 42 appear, which, together with the cut lines 34, glow brightly against a dark metallization background 25, as shown schematically in FIG. 5 (D).

In the embodiment of FIG. 6, compared with the embodiment of FIG. 4, the additional motive is not supplemented by the original maple leaf motif, but the maple leaf motif itself is enlarged so that it protrudes laterally from the hologram strip 14.

When examining the front side of the banknote in reflected light (Fig. 6 (A)) in this case, only the portion 70 of the raster laser hole 32 protruding from the hologram strip 14 is visible. The portion of the laser hole overlapped by the hologram strip 14 cannot be recognized due to “overexposure” a hologram 16, 18 and a small difference in contrast between the lines of demetallization 42 and the section lines 34, as already explained above in connection with FIG. 4 (A).

Thus, the observer, although he can see in reflected light that there is a motive for the clearance, but he cannot consider its form and information content. Therefore, he is urged to keep banknote 10 in the light and look into the light. When he does this, he gets a visual impression according to Fig.6 (B), which shows him the full motive of "maple leaf". Such an addition of the image to the lumen is an impressive, easy to remember sign of authenticity, which anyone can simply check.

Even if the invention in past embodiments has been explained using the hologram strip 14 as an example, it is understood that the security element used according to the invention does not have to contain a hologram. In other proposed forms of implementation, the modification of the visual external impression may consist, for example, in demetallization of a metal layer, for example, an absorber or reflector layer of a thin-layer element with effects of overflow of colors, in demetallization of a dull structure, in removal of a paint layer or partial or complete removal of an additional layer of a protective element . In this case, the removal can pass through the entire security element right through to the substrate of the data carrier, for example, in banknote paper, in addition, a watermark effect is created. In other embodiments, also one layer of the security element may be equipped with a laser-sensitive marking substance, which, due to the action of laser beams, acquires an irreversible change, for example, a color change.

To illustrate, Fig. 7 shows in cross-section a data carrier 80 according to one embodiment of the invention, in which a security element with a metal layer 84 is applied to the paper substrate 82. Through holes 86 are made for the formation of the first part of the marking in the metal layer 84 and the paper substrate 82 due to the action of laser beams. Additionally, to the formation of the second part of the marking in the modification section 85 in the same operation, and thereby in perfect register with reduced laser line load 88 demetallization, in which the visual appearance of the protective element is modified, was introduced only into the metal layer 84.

In the embodiment of FIG. 8, the reduced laser load on the modification section 85 is set so that when the demetallization lines 88 are created, not only the metal is removed from the metal layer 84, but also thin spots 90 are created in the paper substrate 82. When viewed in light, the section 85 modifications in this case additionally show the effect of watermarks.

In principle, the modification of the protective element allows, for example, by removing material or changing color, as a rule, a more complex design than the through hole. Therefore, it is proposed to implement a motive that has more or less complex parts of the motive due to the combination of the hole and the modification section.

Such an embodiment in the embodiment is illustrated in FIG. 9. There, on a paper backing 100 of a banknote, a bookmark is applied in the form of a security element with a metal layer 102. The proposed marking 104 is a coat of arms motif and is formed in the first part of the marking due to a laser cut hole 106 in the paper substrate 100. In the second part of the marking, the marking 104 is formed by a plurality of demetallization lines 108 in the metal layer 102, in which the visual appearance of the patch is in the form of a protective element modified. Directly visible is the higher complexity of marking 104 in the area of modification with demetallization lines 108 compared to the laser cut hole 106. At the same time, the cut lines of the hole 106 and the demetallization line 108 of the metal layer 102 at the points where they fit together are completely brought together to a friend, due to which a single design appears in the lumen.

Figure 10 shows another example implementation of a data carrier with a marking 114, created by exposure to laser beams. By analogy with the embodiment of FIG. 9, a patch in the form of a security element with a metal layer 112 is applied to the paper backing 110. Marking 114 in this embodiment is a star motif, which in the first part of the marking is formed by a laser-cut hole 116 in the paper substrate 110. In the second part of the marking, marking 114 is formed by a plurality of demetallization lines 118 in the metal layer 112, in which the visual appearance of the patch in the form of a protective element modified. Cutting of the hole 118 and creation of the demetallization lines 118 are carried out in the same working step by the same laser beam, due to which the modification section with the demetallization lines 118 is completely brought to the hole 116. The brightly luminous pentagonal final elements 118 complement the seemingly bright inner light in reflected light part 116 to the full motif 116, 118 in the shape of a star.

In yet another embodiment, the storage medium again comprises a security element, such as, for example, a security thread 122 with a window recessed into banknote paper 120 according to FIG. 11. Then, due to the action of laser beams in banknote paper 120, a raster laser hole 124 is created from a plurality of parallel cut lines 126, which is superimposed on the security thread 122 with a window. In this case, the laser parameters are selected in such a way that the laser beams, along with the banknote paper 120, also separate the carrier film of the security thread 122. Then, at least the cut section is closed on one or both sides, respectively, with another film. Such a combination can be used with particular advantage in film composite banknotes, especially in film composite banknotes with a film / paper / film layer structure, since both outer films in this case not only can protect the security element 122 from manipulation and prevent pollution, since this embodiment also allows you to identify attempts to counterfeit due to the delamination of the composite banknote, as will be described in more detail below.

If a plastic backing is used instead of the paper backing 120, then the described embodiment can also be used in banknotes made of a film composite with a film / film / film layer structure.

In FIG. 12 shows yet another embodiment of a data medium that models a security thread with a window. To do this, first, a continuous security thread 132 was applied to the banknote paper 130 of the banknote, which is provided with a metal layer with a negative font 134. In the area of the security thread 132, several identical holes 136 in the data carrier were then cut out by means of laser beams, the parameters of the lasers being chosen such so that the laser beams cut through both banknote paper 130 and the security thread 132. The combination of the applied security thread 132 and the holes for the observer 136 gives the visual impression of a security thread with an eye shkami.

The invention can be used with particular advantage in banknotes made of a film composite, in which the outer layers of the film simultaneously serve as a coating for holes created by laser beams. In general form, this is illustrated in FIG. 13. The proposed film composite bill 140 has a backing 142 made of paper or film which is connected to the security element 144. This combination of the backing and the security element was then marked 150 with laser beams, which has an altered visual appearance when viewed from the light impression compared to viewing in reflected light. In this case, the first part of the marking is formed by at least one hole 152 in the substrate 142, while the second part of the marking is formed in the protective element 144 due to the modification section 154, in which the visual impression of the protective element 144 is modified by the action of laser beams.

Since the modification of the security element 144 usually requires less energy input than cutting the substrate 142, as a rule, the laser energy or laser power when the laser beam is transferred from the cutting region 152 to the modification region 154 decreases and, conversely, when moving from the modification region 154 to the cutting area 152 increases again. This ensures that both parts of the marking, despite their different nature, are in perfect register with each other.

Finally, the cut substrate 142 and the modified security element 144 are embedded between two films 156 to form the desired banknote 140 from the film composite.

Both outer films 156 can protect the security element not only from manipulation and contamination, but due to the laser cut, an additional security feature can also be formed that clearly indicates the delamination of the banknote from the film composite (“tamper evident”). After all, if a laser cuts one film of the composite and scratches the position relatively deeply or even cuts it completely, then the banknote from the film composite delaminates asymmetrically. To do this, the laser cut must form a closed loop. On the side of the banknote, which was not cut by the laser, in this case, the contour is maintained, while on the other side of the banknote a corresponding hole appears. If the laser cut is performed in the field of another sign of authenticity, then also this sign is destroyed when delaminated. Thus, an attempt at manipulation becomes apparent.

In the proposed implementations, the cut lines 162 or the modification lines 172 of the raster laser holes 160 need not be straight and parallel, as for simplicity it is accepted in the previous embodiments and is shown again in FIG. 14 (A). Moreover, the raster laser holes 160 may, for example, also contain straight and divergent cut lines 164 or modification lines 174, as shown in Fig. 14 (B), or curved, equidistant cut lines 166 or modification lines 176, as shown in FIG. 14 (B), or also curved, divergent cut lines 168 or modification lines 178, as shown in FIG. 14 (D).

When laser cutting, the widths of the cut lines in the substrate and the modification lines in the protective element can, due to, as a rule, the Gaussian distribution of the energy of the laser beam, differ from each other. Also, the cut lines of all embodiments may be provided with a laser-modifiable edge portion, as generally described above.

The effects described with reference to a hologram strip or patches can, of course, also be used in any other security elements, for example in a window of a window thread. It is clear that the shown forms of implementation can in any way be combined with each other. Thus, for example, diverging and / or curved cut lines according to Figs. 14 (A) to (D) can be combined with all the security elements described.

10 Banknote

12 Banknote paper

14 hologram strip

16 Portrait

18 The Importance of Dignity

20 coat of varnish for embossing

22 hologram structure

24 Hologram plating

30 marking

32 Raster Laser Hole

34 Cut lines

36 maple leaf

38 Square frame

40 Modification Plot

42 Demetallization Lines

44 Observer

46 reflected light

50 films

60 Design

62 Value of Dignity

64 ellipsoid frame

70 The protruding part of the raster laser hole

72 Overlapped part of the raster laser hole

80 data carrier

82 Paper backing

84 metal layer

85 Modification Plot

86 through hole

88 Lines of demetallization

90 thin spots

100 Paper backing

102 metal layer

104 marking

106 hole

108 Demetallization Lines

110 Paper backing

112 metal layer

114 marking

116 hole

118 Demetallization Lines

120 banknote paper

122 Security thread with windows

124 Raster laser hole

126 cutting lines

130 Banknote paper

132 Security thread

134 negative font

136 hole

140 Banknote made of film composite

142 Substrate

144 security element

150 marking

152 hole

154 Modification Plot

156 Films

160 Raster laser hole

162-168 Cut lines

172-178 Modification Lines

Claims (19)

1. A data carrier, first of all a valuable document, such as a banknote or an identity card based on a plastic card, with a substrate and a security element connected to the substrate, the data carrier containing a mark created due to the action of laser beams and having a different visual impression when viewed from the light compared with the consideration in reflected light, characterized in that the marking has a first part formed by at least one made by exposure to laser beams holes in the substrate, and the second part formed in the protective element by the modification section, in which the visual appearance of the protective element is modified by the action of laser beams, and the modification section of the second part of the marking is located in the register to the hole of the first part of the marking, and the first part of the marking blocked by a protective element, or partially blocked by a protective element and partially located directly next to the protective element. 2. The data carrier according to claim 1, characterized in that the first part of the marking has many straight, parallel or diverging cut lines in the substrate and / or the second part of the marking has many straight, parallel or diverging modification lines in the protective element. 3. The data carrier according to claim 1, characterized in that the first part of the marking has a lot of curved, equidistant or divergent cut lines in the substrate and / or the second part of the marking has a lot of curved, equidistant or divergent modification lines in the protective element. 4. The data carrier according to claim 2, characterized in that the cut lines and the modification lines without offset at least partially adjoin each other. 5. The data carrier according to claim 3, characterized in that the cut lines and the modification lines without offset at least partially adjoin each other. 6. The storage medium according to one of paragraphs. 1-5, characterized in that the modification section is formed by removing the material of the protective element, primarily due to local demetallization of the metal layer or due to local removal of the paint layer. 7. The storage medium according to one of paragraphs. 1-5, characterized in that the modification area is formed due to irreversible changes in the visual properties of the protective element, primarily due to local changes in the visible paint or transparency of the protective element. 8. The storage medium according to one of paragraphs. 1-5, characterized in that the first and second part of the labeling are related to each other or complementary to each other information. 9. The storage medium according to one of paragraphs. 1-5, characterized in that the substrate at least in one partial section is provided with a laser-modifiable marking substance and at least one hole in the first part of the marking in this partial section has an edge section that is modifiable by the action of laser beams. 10. The storage medium according to claim 9, characterized in that the substrate in the partial section is provided with a marking substance, the visible ink of which is variable due to the action of laser beams, and at least one hole of the first part of the marking in this partial section has a colored edge section. 11. The storage medium according to one of paragraphs. 1-5, characterized in that the substrate is made of paper or film. 12. The storage medium according to one of paragraphs. 1-5, characterized in that the data carrier is a composite of paper and film or a film composite, in which the substrate and the protective element are embedded between two layers of the film. 13. The storage medium according to one of paragraphs. 1-5, characterized in that the security element is a security thread, label or transfer element. 14. The storage medium according to one of paragraphs. 1-5, characterized in that the modification section of the protective element is made in a metal layer, preferably in a hologram metallization, in an absorber or reflector layer of a thin-layer element with color overflow effects, in a metallic matte structure or in a metal coating of a microstructure. 15. A method of manufacturing a data carrier according to one of paragraphs. 1-14, in which:
- prepare the substrate, which is connected to the protective element, and
- the data carrier due to the action of laser beams is provided with a marking which, when viewed from the light, has a changed visual impression compared to viewing in reflected light, characterized in that
- due to the action of laser beams form the first part of the marking with at least one hole in the substrate, and
- in the same operation, in the register to the opening of the first part of the marking in the protective element, the second part of the marking is formed due to the modification section, in which the visual appearance of the protective element is modified due to the action of laser beams. 16. The method according to p. 15, characterized in that the first and second part of the marking is created by supplying laser beams from an infrared laser, preferably a CO ₂ laser. 17. The method according to p. 15, characterized in that the substrate at least in a partial section is provided with a laser-modifiable marking substance such that at least one opening of the first part of the marking in this partial section is modified by the action of laser beams at the edge section, preferred in such a way that the paper protected from counterfeiting in a partial section is provided with a marking substance, the visible ink of which is variable due to the action of laser beams and that at least one hole rvoy markings on this part of the partial section due to the action of laser beams is provided with colored marginal portion. 18. The method according to p. 16, characterized in that the substrate at least in a partial section is provided with a laser-modifiable marking substance such that at least one hole of the first part of the marking in this partial section is modified by the action of laser beams at the edge section, preferred in such a way that the paper protected from counterfeiting in a partial section is provided with a marking substance, the visible ink of which is variable due to the action of laser beams and that at least one hole rvoy markings on this part of the partial section due to the action of laser beams is provided with colored marginal portion. 19. The method according to one of paragraphs. 15-18, characterized in that the substrate provided with at least one hole with a modified protective element is closed between two films to form the structure of the film composite.

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