RU2594280C2 - Multilayer polymer-based product protected against forgery - Google Patents

Abstract

FIELD: information technology.

SUBSTANCE: present invention relates to data storage devices, protected from forgery, and methods for counterfeit protection of printed products, such as securities, banknotes, paper and polymer identity cards. Invention describes a multilayer article that is protected against forgery. It has at least one base layer and a layer having an image of a periodic raster, that is applied on top of the base layer, an intermediate transparent layer and a layer with the raster arranged on top of it. Mutual arrangement of the rasters forms a moire pattern, which changes when viewed at different angles, The angles create this difference, since some variable graphic information is entered on one of the aforementioned layers, wherein the moire pattern is irreversibly distorted in the area where the variable information is applied, that makes it impossible to introduce any subsequent changes to the variable information or forge it. Mutual arrangement of the graphic element rasters and images with the variable information enables the change of the moire image that is formed by the graphic element rasters, in the area where personal data is located and provides the protection of the variable information from complete or partial forgery.

EFFECT: issue solved by the invention - a better protection of items from unauthorised use.

18 cl, 7 dwg, 4 ex

Description

The invention relates to multilayer products containing paper and / or polymer layers, protected from counterfeiting, made both on paper and on a polymer basis, and is intended to visually determine the authenticity of protected information carriers, such as passports, identity cards and letterhead paper, as well as travel documents. In addition, this invention relates to a method for verifying the authenticity of data storage media.

One of the most effective and technically feasible solutions for checking the authenticity of identification cards, passports and other forms of valuable documents is the use of bright and unusual visual security features based on various visual effects. Such visual effects may include, in particular, the effects of movement of a graphic object, the effect of changing the shape and size of a given object, the effect of changing its color, or the effect of volume (“3D” effects).

The advantages of using these effects are the ease of determining the authenticity of the population and cash workers, the short adaptation times for the population and the speed of training, high control performance and the high level of security achieved.

Due to these advantages, visual security features are widely used in the field of protection against counterfeiting, and the constant task of manufacturers of identification documents and other secure printing products is the search for new effective and difficult to reproduce security features that have pronounced visual effects.

When solving the problem of searching and developing a new visual protective effect as applied to identification documents, the main attention is always paid to the need to protect personal information (information about the owner).

The solved problem of the proposed invention is the protection of personal data on a multilayer medium from unauthorized changes (full or partial) using visual signs based on moire.

The proposed technical solution is based on the use of creating additional visual effects when changing the angle of the product, which consists in distorting the moire effect of the image in the form of color change or the movement of moire stripes, multicolor rasters made by the printing method, which are in superposition relative to the raster image with identification data, for example, photograph the owner.

This solution allows you to get the visual effect of changing color variability, or the movement of colored stripes in the field of formation of identification information on the medium, and allows you to protect personal information on this medium from unauthorized changes due to the disappearance of the specified visual effect when trying to completely or partially fake the information.

A feature of this invention that distinguishes it from the other solutions under consideration is the formation of these visual effects only in the field of personal information to be protected from complete or partial change, since the layer with this information is involved in the formation of the visual effect. Outside this area, the visual effect is not formed. As a result, a violation of the visual effect occurs only when trying to make unauthorized changes to the protected information.

A known solution RU 2235021 C2, a protective visual element and a valuable document based on it, obtained through the use of a color raster and three-dimensional relief, manifested in the presence of colored moire stripes, manifested when viewing a valuable document at an angle.

However, this decision does not provide for the possibility of protecting variable information from full or partial falsification.

A known method of manufacturing securities DE 3208204 A1, which relates to the protection against unauthorized copying by offset printing. As the information carrier, transparent paper or other transparent carrier material is used with periodic or almost periodic patterns consisting of dots or lines applied to it on both sides. For application, the exact combination of images on the front and back sides of the media is used, made on machines for duplex printing. Therefore, a periodic structure of lines is proposed, which when correctly correlated in transmitted light has the appearance of thin lines, and with a slight displacement of the structure in the case of a fake, moire images are obtained.

The disadvantage of this technical solution is the need to maintain accurate register of the front and back side elements, which complicates the manufacturing process, as it forces manufacturers to use only equipment for double-sided printing and increases the likelihood of a marriage. It should also be noted that the use of double-sided printing due to the features of the technology does not allow the use of images with a line width of less than 40 microns.

A similar technical solution is presented in US 6494491 B1, 12/17/2002, in which, to obtain a latent image, the graphic elements forming the protective element are arranged in such a way that some of the elements have a slight offset relative to the rest of the elements. To display the latent image, a transparent material is used, on which a grid is applied, corresponding to the position of graphic elements that do not have an offset. When this material is applied to the medium, the lattice elements cover the graphic elements of the medium that do not have an offset, and the latent image appears as positive. When applying a transparent material with a shift so that the lattice elements cover the elements having an offset, the latent image appears as negative.

The disadvantage of this technical solution is the need to combine without distortion of the transparent material with the sealed area, which complicates the identification of the protective element by an unskilled user.

Closest to the claimed technical solution is the invention described in patent RU 2386544 C1, 04/20/2010, which proposed a protective element for printing products containing a multilayer transparent polymer film with a first rasterized image made on the upper surface of the upper layer of the film with a resolution of the same order both the film thickness and the second rasterized image made on the lower surface of one of the underlying layers of the polymer film and / or on the surface of the protected product, on the protective element is located, the second rasterized image being positioned in such a way that when observing the images for reflection at different angles or in the clearance, the observed image smoothly changes from positive to negative or vice versa, while the first and second rasterized images are made transparent and / or translucent and / or reflective and / or luminescent and / or embossed.

The disadvantage of this technical solution is the limitation on the method of forming the raster elements, namely the impossibility of creating such elements without the use of laser processing, which significantly limits the scope of application in secure printing products.

The technical problem solved by the invention is to increase the security of products through the use of moire raster effects to protect personal information from full or partial falsification, as well as to obtain a new optically variable effect and / or motion effect, as well as to increase manufacturability and reduce the cost of the protective element due to forming a raster in a printing way.

This problem is solved due to the features set forth in the claims. Preferred embodiments of a multilayer secure storage medium are presented in the dependent claims.

The information carrier protected from forgery has at least a substrate layer on which graphic elements are arranged in the form of a raster, an intermediate transparent layer located on top of it with a raster layer, while one of the layers contains graphic information that may include personal data owner of the document. In this case, according to the invention, the raster of graphic elements and the image with graphic information have a relative position, providing a change in the moire image formed by the rasters of graphic elements in the field of applying personal data.

When applying graphic data with personal information to one of these layers, the moiré pattern is irreversibly violated, making it impossible, or extremely difficult, to fake and / or make unauthorized changes to the personal data of the owner of the document. This is because when you try to change the personal data of the owner of the document, you will need to not only clean and / or replace fragments of the document surface containing graphic information about the owner, but also completely restore the original rasters in all layers to restore the initial picture of the moire pattern.

Moreover, according to the invention, when changing the viewing direction of the medium, depending on the particular implementation, the image with personal data can change from positive to negative, completely or partially change in color, or have the effect of movement or color change of monochrome or multicolor moire stripes.

According to the invention, the layer with personal data can not only contain a raster in the image of personal data, but also can be made with a relief forming a three-dimensional raster. Accordingly, the image of personal data may not contain any raster.

As one of the options for its implementation, a carrier can be used, the lower layer of which contains a contrast raster, then a transparent layer and a top layer are applied in the form of a three-dimensional raster with a symmetrical stroke profile with the owner’s personal data printed on its surface. At the same time, when viewing the media at a right angle, an image of personal data is observed, when the media is tilted under the personal data, an image of moire stripes appears.

Also according to the invention, as one of the options for its implementation, there may be a carrier, the lower layer of which contains a contrast raster, then a transparent layer and the upper layer are applied in the form of a three-dimensional raster with an asymmetric stroke profile with the owner’s personal data printed on its surface. At the same time, when viewing the medium at a right angle, the image of personal data is observed, when the medium is tilted under the personal data, an image of moire bands appears, and when observing the medium from only one side, the image of personal data disappears at an acute angle.

When implementing the invention, the step of the raster of graphic elements, including the distance between the elements of the raster, can range from 10 to 400 microns.

The image can be formed by any kind of raster, including lines, dots, strokes, graphic primitives, or a combination thereof.

Graphic elements in the form of a raster are applied with ink contrasting with respect to the color of the substrate base by any printing method, while offset printing is preferred.

Graphic elements can be made with paints containing optically variable pigments, as well as metallized paints.

In accordance with the invention, graphic elements in the form of a raster can also be formed in the form of metallized areas by selective foil stamping or in the form of a raster made by partially removing a previously applied metallized layer by chemical etching or laser exposure.

An image with personal data in the form of a raster on the upper layer of the medium can be applied by inkjet printing. Also, the preferred method of generating personal data may be the application of personal information performed by laser engraving on the laser-active plastic material of the upper layer of the carrier or by thermal sublimation printing methods.

In particular, for the formation of graphic elements on any of the considered carrier layers, a partial removal method using laser technology of a metal layer previously deposited on the surface can be used.

Also, for the formation of graphic elements on any of the considered layers of media can be used a method of partial color change or discoloration of laser-sensitive ink.

The claimed technical solution is carried out by the methods described below.

Example 1

A valuable document in the form of a plastic card is made on a polycarbonate basis (pos. 1 of Fig. 1) and contains a multilayer security element formed by a graphic element in the form of an alternating raster (pos. 2 of Fig. 1), made by offset printing method in two different colors: yellow and in blue.

A transparent layer (pos. 3 of Fig. 1) and a layer in the form of personal information (photo of the owner) formed by a raster, whose strokes are rotated at an angle of 5 ° relative to the printed raster (pos. 4 of Fig. 1), are applied on top of the indicated graphic element.

When observing a document, information for identifying a person is visible on a plain colored background, while in the photo of the owner there are colored moire stripes in yellow and blue (Fig. 2), which change when viewing the document at an angle.

Colored moire stripes that appear when observing a document at an angle, when trying to change the owner’s personal data will be missing or distorted, indicating a complete or partial fake.

Thus, it is obvious that the technical result is achieved by applying for the protection of a multilayer information carrier the base material, a layer deposited on top of it, containing a raster in the form of alternating colored lines, an intermediate transparent layer, and a layer located on top of it with rasterized variable information, the location of the rasters forms in the field of variable information an optically variable image in the form of color moire strips that change when the information carrier is viewed under different with corners.

Example 2

The valuable document in the form of an identity card is made on a plastic basis (pos. 1 of Fig. 3) and contains a multilayer security element formed by a graphic element in the form of a two-color alternating raster (pos. 2 of Fig. 3), made by offset printing method in two different colors: red and blue.

A transparent layer (pos. 3 of Fig. 3) and a layer in the form of personal information formed by a raster, whose strokes are rotated at an angle of 5 ° relative to the printed raster (pos. 4 of Fig. 3), is applied over this graphic element, and this raster is formed by partial laser demetallization of a continuous metal coating.

When observing the document, information for identifying the person is visible (photo of the owner) on a monophonic metallized background (Fig. 4), which is colored with colored moire stripes of red and blue that shimmer when viewing the document at an angle.

Colored moire stripes that appear when observing a document at an angle, when trying to change the personal data of the owner will be missing or distorted, which indicates its complete or partial fake.

Thus, it is obvious that the technical result is achieved by applying for the protection of a multilayer information carrier the base material, a layer deposited on top of it, containing a raster in the form of alternating colored lines, an intermediate transparent layer and a layer located on top of it with rasterized variable information made by solid opaque demetallization a metal layer, and the arrangement of the rasters forms an optically variable image in the form of colored moire polo in the region of variable information Which vary the recording medium when viewed at different angles.

Example 3

A valuable document in the form of an identity card is made on a plastic basis (pos. 1 of Fig. 5) and contains a multilayer security element formed by a graphic element in the form of a two-color alternating raster (pos. 2 of Fig. 5), made by offset printing method in two different colors: red and blue.

A transparent layer (pos. 3 of Fig. 5) and a layer in the form of a contrasting raster, the strokes of which are turned at an angle of 7 ° relative to the printed raster (pos. 4 of Fig. 5), are applied on top of the indicated graphic element.

Personal information is generated on a two-color alternating raster by partially removing the paint coating by laser processing.

When observing the document, information for identifying the person is visible (photo of the owner) against a plain background (Fig. 6), which is colored with colored moire stripes of red and blue that shimmer when viewing the document at an angle.

Colored moire stripes that appear when observing a document at an angle, when trying to change the owner’s personal data will be missing or distorted, indicating a complete or partial fake.

Thus, it is obvious that the technical result is achieved by applying a substrate containing a raster in the form of alternating colored lines, an intermediate transparent layer and a raster layer located on top of it to protect the multilayer information carrier of the substrate. Variable information is made by laser processing of the paint layer, and the arrangement of the rasters forms an optically variable image in the form of colored moire stripes in the variable information region, which change when the information carrier is viewed from different angles.

Example 4

A valuable document in the form of an identity card is made on a plastic basis (pos. 1 of Fig. 7) and contains a multilayer security element formed by a graphic element in the form of a two-color alternating raster (pos. 2 of Fig. 7), made by offset printing method in two different colors: red and blue.

A transparent layer (pos. 3 of Fig. 7) is applied on top of the specified graphic element in the form of a three-dimensional raster, the strokes of which are turned at an angle of 5 ° relative to the printed raster. Personal information is applied over the three-dimensional layer (pos. 4 of Fig. 7).

Personal information is generated on a three-dimensional raster by laser processing of the laser-active material of the upper transparent layer.

When observing a document, information for identification is visible (photo of the owner), which is colored with colored moire stripes of red and blue, and which shimmer when viewing the document at an angle.

Colored moire stripes that appear when observing a document at an angle, when trying to change the owner’s personal data will be missing or distorted, indicating a complete or partial fake.

Thus, it is obvious that the technical result is achieved by applying a layer containing a raster in the form of alternating colored lines, an intermediate transparent layer with a three-dimensional relief in the form of a raster and a layer with variable information on top of it to protect the multilayer information carrier of the substrate. Variable information is made by laser processing the laser-active material of the upper transparent layer, and the arrangement of the rasters forms an optically variable image in the form of colored moire stripes in the variable information region, which change when the information carrier is viewed from different angles.

Claims (18)

1. A multilayer anti-counterfeit product having at least one substrate layer, a layer deposited on top of it, containing a graphical image in the form of a periodic raster, an intermediate transparent layer and a raster layer located on top of it, and the relative position of the rasters forms a moire image, which changes when viewing the document at different angles, characterized in that to create a moire image that occurs when viewing the product at an angle, in one of these layers on stages of personalization of the product due to the displacement of the elements forming the raster, graphic variable information is generated, including the personal data of the owner of the document 2. A multilayer anti-counterfeit product according to claim 1, characterized in that it is an identity card, passport, driver’s license, travel document, pass, security form or similar document, and the variable information contains the personal data of the document holder. 3. A multilayer anti-counterfeit product according to paragraphs. 1-2, characterized in that the basis of the information carrier can be made in the form of a single-layer or multilayer polymer film, composite polymer material or paper. 4. A multilayer anti-counterfeit product according to claim 1, characterized in that personal information is generated due to a violation of the moire pattern, carried out by making local phase changes in the form of a shift or shift of the generatrix lines in at least one of the rasters. 5. A multilayer anti-counterfeit product according to claim 1, characterized in that the upper transparent layer contains a relief in the form of a three-dimensional raster. 6. The multilayer anti-counterfeit product according to claim 1, characterized in that the raster formed in the layers to form a moire image has a straight, curved or pixel shape, contains symbolic, graphic or guilloche elements, or is formed by any combination of the above. 7. A multilayer anti-counterfeit product of claim 6, characterized in that the raster has a pitch lying in the range from 0.1 to 1 mm. 8. A multilayer anti-counterfeit product according to any one of claims 6 to 7, characterized in that the variable information made using the raster is the identity of the owner of the document. 9. A multilayer anti-counterfeit product according to any one of claims 6 to 7, characterized in that the personal information is formed on a contrasting graphic image by partially removing the paint or metallized layer by laser processing from the surface. 10. The multilayer anti-counterfeit product according to claim 1, characterized in that it contains additional device-specific and / or visual protective features on its surface or in the area of applying personal information. 11. The multilayer anti-counterfeit product according to claim 1, characterized in that it contains on its surface or in the area for applying personal information an additional hidden visual security feature, observed only when the viewing angle of the feature is changed. 12. A multilayer anti-counterfeit product according to claim 8, characterized in that the variable information is made by laser engraving on laser-active plastic. 13. A multilayer anti-counterfeit product according to claim 8, characterized in that the variable information is made by partial demetallization of a continuous opaque metallized layer. 14. A multilayer anti-counterfeit product according to claim 1, characterized in that the graphic information is printed using metallized inks. 15. The multilayer anti-counterfeit product according to claim 1, characterized in that at least one of the layers contains an image visualized in UV and / or IR. 16. A multilayer anti-counterfeit product according to claim 15, characterized in that the image visualized in UV and / or IR completely coincides with the graphic image and / or variable information. 17. A multilayer anti-counterfeit product according to claim 15, characterized in that the image visualized in UV and / or IR partially coincides with the graphic image and / or variable information. 18. A multilayer anti-counterfeit product according to claim 1, characterized in that it contains a microcircuit with a memory, with information recorded in it, intended for reading during media authentication and storing a digital copy of the protected variable information.

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