KR20200026425A - Anti-counterfeiting sheet for preventing forgery and verifying authenticity and recognition method thereof - Google Patents

Abstract

Provided in the present invention are an anti-counterfeiting sheet and a manufacturing method thereof, wherein first and second patterns are composed of a plurality of elements and blanks on both surfaces of a transparent base material before being recognized by means of the blanks, such that the clearness of the patterns is changed, the color is transformed, the patterns are revealed or the patterns are changed by an optical illusion in accordance with the angle, direction and distance of vision. Therefore, without using an expensive special ink, going through a complicated printing process, or using a special material, a sophisticated anti-counterfeiting effect can be achieved such as color transformation, a latent image, a transparent screen, fluorescent color transformation, a fluorescent latent image, a latent QR code and the like. Furthermore, authenticity can be easily checked by photographing at the specific angle, direction and distance of vision by using a smartphone, a microscope, a magnifier and the like.

Description

ANTI-COUNTERFEITING SHEET FOR PREVENTING FORGERY AND VERIFYING AUTHENTICITY AND RECOGNITION METHOD THEREOF}

The present invention relates to an anti-counterfeiting sheet utilizing visibility characteristics according to the viewing angle, direction, and distance for preventing forgery and for verifying authenticity, and more specifically, printing with ordinary ink rather than expensive special ink or complicated special process. Inexpensive color shift, latent image, fluorescence color shift, latent fluorescence image, latent QR code and security window It relates to an anti-counterfeiting sheet that can be implemented. In addition, the present invention relates to a method for recognizing the authenticity of the anti-counterfeiting sheet by a smart phone.

The anti-counterfeiting sheet has various security effects such as time-varying (color conversion), silver (watermark), hidden line, transparent window or latent image. Silver is one of the important security elements implemented in security paper for the anti-counterfeiting effect of the sheet. In general, due to the difference in the thickness and density of the paper or fiber, the part where light is less visible appears dark, and the part where light is much transmitted Is made bright so that the silver shape is changed or expressed by the contrast. As a method of implementing silver, a manufacturing method of silver using a laser is known from Korean Patent No. 10-1213208. In addition, many techniques are known to utilize a special ink, such as various thermochromic or photochromic inks, so that the pattern is expressed or discolored at a specific light or at a specific temperature. Korean Patent No. 10-0824286 discloses a technique related to transfer paper using discoloration characteristics.

In the case of latent image technology, it is generally a technique that allows different kinds of images to be viewed (viewed) according to the viewing angle by adjusting the line width or the shape of lines formed by intaglio printing or forming a shape. Japanese Laid-Open Patent Publication No. 2009-214304 discloses a technique of forming a latent image pattern by printing on a raised pattern. In addition, a special time-varying (color conversion) ink is used to show the effect of different colors depending on the viewing angle.

However, the above-described anti-counterfeiting effects include expensive special inks such as thermochromic, photochromic, or time-varying (color conversion) inks, complicated special printing processes such as intaglio printing, or special textile materials. In addition, there is a problem that the material cost is high or the manufacturing process is complicated, such as injecting a special effect in the sheet manufacturing step.

KR 10-1213208. KR 10-0824286. JP 2009-214304.

The present invention aims to solve the problems of the prior art, and in particular, by utilizing the viewing characteristics according to the viewing angle, direction, and distance, complex ink such as special ink or intaglio printing, such as color conversion ink and time varying ink, etc. It is an object of the present invention to provide an anti-counterfeiting sheet which can implement color conversion, latent image, fluorescent color conversion, fluorescent latent image, latent image QR code, and transparent window at low cost by using ordinary ink and plate printing without using a process.

In addition, by identifying and photographing at a specific viewing angle, direction and distance with the user device, it is possible to easily determine the authenticity.

In addition, the present invention provides a method for easily recognizing the authenticity of the manufactured anti-counterfeiting sheet by a smart phone.

According to an embodiment of the present invention for achieving the above technical problem, the first pattern is formed on one surface and the second substrate is formed on the other surface, the first pattern is a plurality of first elements and first Designed to include one margin, the second pattern is designed to include a plurality of second elements and a second margin, all or part of the first element when viewed from directly above the second element is the second The anti-counterfeiting sheet is provided, which is concealed by an element and the first glyph is visible at a predetermined viewing angle through the second margin.

The second glyph may be recognized at a predetermined viewing angle through the first margin.

The anti-counterfeiting sheet further includes an adhesive layer on a surface on which the first pattern of the transparent substrate is printed, and when the adhesive layer is damaged, the first pattern in contact with the adhesive layer is damaged, and the second margin at the predetermined viewing angle is prevented. Through the damaged first pattern can be recognized.

The plurality of first elements or second elements may be regularly arranged.

According to the angle, direction, or distance of the first glyph through the second margin, the first glyph may change in vividness, color, glyph, or glyph transition.

The transparent substrate may be composed of one or more layers having a predetermined light transmittance.

The first element includes a plurality of sub-elements formed of different colors or different shapes or different inks, and the different colors or shapes or inks according to the direction in which the first element is viewed through the second margin. Can be visually recognized respectively.

The plurality of second elements may be formed using a plurality of inks having different reflectances.

The first or second pattern may be formed by a combination of any one or more of gravure printing, screen printing, flexographic printing, offset printing, inkjet, laser printing and deposition.

The plurality of first elements may be collected by an optical illusion when viewed at a specific distance through the second margin.

The transparent substrate may be embossed.

When the first element is viewed from above the first element, the color of the first element may be recognized as a different color due to an optical illusion caused by interference with the second element.

A predetermined mark is designed with the first pattern comprising a plurality of first elements and a first margin, wherein the shape of the mark is distorted so that the predetermined mark is recognized as a normal mark at a specific viewing angle and distance. It may be designed in a deformed shape.

The predetermined mark may be a QR code or a barcode or logo.

As the thickness of the transparent substrate is increased or the density is lowered, the visibility of the first pattern viewed through the second margin may be increased.

The first or second pattern may be formed by double-sided printing or double-sided deposition.

Applying fluorescent ink to the first element, all or part of the first element is concealed by the second element when viewed from directly above the second element, the first element through the second margin The fluorescent latent image characteristic may be exhibited by being viewed at a predetermined viewing angle.

The first element may include a plurality of sub-elements formed of fluorescent inks having different physical or chemical properties or different colors, and different from each other depending on a direction in which the first element is viewed through the second margin. By allowing the fluorescent inks of different colors or different colors to be visually recognized, the fluorescent color conversion characteristics may be exhibited.

According to another embodiment of the present invention, an application (APP) for achieving the above technical problem; And a method for recognizing the authenticity of the anti-counterfeiting sheet by a user device having a camera or a lens, wherein the first pattern is designed to include a predetermined identification pattern, and the app is configured to display the image through the camera or lens. Receiving an image of the anti-counterfeiting sheet; And detecting the authenticity by detecting the identification pattern in the received image, wherein the camera or the lens receives the image at a specific viewing angle, direction or distance from the image, and the user device identifies the identification. There is provided a method for recognizing authenticity of the anti-counterfeiting sheet, which includes information on a pattern in advance.

The identification pattern may be designed to include a plurality of first elements and a first margin.

As described above, according to the present invention, the first and second patterns on both sides of the transparent substrate are formed by designing a plurality of elements and margins, and visually recognized through the margins, thereby allowing the pattern to be visualized according to the viewing angle, direction, and distance. Color change, latent image, transparent window effect can be achieved by changing the vividness, changing the color, developing the pattern or changing the pattern. Therefore, a high anti-counterfeiting effect is possible without using expensive special inks, complicated printing processes, or using special materials. That is, there is an advantage in that it is possible to manufacture in a single process by using an inexpensive material such as flat plate ink and using an existing process such as flat plate printing. Therefore, it can be used for low cost products or small quantity product range.

In addition, the use of a fluorescent ink and the like in the pattern can produce a fluorescent color conversion and a fluorescent latent image effect according to the viewing angle, it can produce a strong anti-counterfeiting effect at a low cost.

In addition, the transparent window effect according to the present invention can also produce a strong anti-counterfeiting effect by easily adjusting the same or different colors visible from both sides.

In addition, the present invention can be applied to a mark such as a QR code to produce an effect of preventing copying and scanning, and can also be used as an anti-counterfeiting label.

In addition, the above effects can be applied simultaneously, thereby maximizing security.

In addition, by detecting and photographing at a specific viewing angle, direction, and distance with a user device such as a smartphone, there is an effect that can easily determine the authenticity.

1 is a view showing a cross section and a plane of the anti-counterfeiting sheet according to an embodiment of the present invention.
Figure 2 is a view showing the cross-section and plane of the anti-counterfeiting sheet according to another embodiment of the present invention.
3 is a view showing a cross section and a plane of the anti-counterfeiting sheet according to another embodiment of the present invention.
Figure 4 is a plan view of the first element printed on the anti-counterfeiting sheet according to another embodiment of the present invention.
5 is a view showing a cross section and a plane of the anti-counterfeiting sheet according to another embodiment of the present invention.
6 is a view showing a cross section and a plane of the anti-counterfeiting sheet according to another embodiment of the present invention.
7 to 9 is a cross-sectional view of the anti-counterfeiting sheet according to another embodiment of the present invention.
10 is a view showing a cross section and a plane of the anti-counterfeiting sheet according to another preferred embodiment of the present invention.
11 is a view showing the property of viewing the anti-counterfeiting sheet on both sides according to another preferred embodiment of the present invention.
12 is a cross-sectional view of the anti-counterfeiting sheet according to another preferred embodiment of the present invention.
Figure 13 is a plan view of the first and second elements printed on the anti-counterfeiting sheet according to various embodiments of the present invention.
14 is a plan view of the anti-counterfeiting sheet according to another embodiment of the present invention.
15 is a view showing that the anti-counterfeiting sheet according to another embodiment of the present invention at a specific viewing angle, direction and distance. 16 and 17 is a view showing that the anti-counterfeiting sheet according to another embodiment of the present invention at a specific viewing angle, direction and distance.
18 and 19 are diagrams in which the anti-counterfeiting sheet according to another preferred embodiment of the present invention is applied to a QR code.
20 is a view showing that the anti-counterfeiting sheet according to the present invention is applied to a credit card.
21 and 22 are views and a flowchart showing a method for recognizing the authenticity of the anti-counterfeiting sheet according to another embodiment of the present invention as a user terminal.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. In the following description, only parts necessary for understanding the operation according to the embodiment of the present invention are shown and described, and illustrations and descriptions of other parts are omitted so as not to obscure the subject matter of the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

In addition, the terms or words used in the specification and claims described below are not to be construed as being limited to the ordinary or dictionary meanings, meaning that corresponds to the technical spirit of the present invention so that the present invention can be most appropriately expressed It should be interpreted as and concepts.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, except to exclude other components unless specifically stated otherwise.

In addition, the printing or forming of the pattern or element on the substrate throughout the specification is not limited to the conventional printing method of applying and printing the ink, but includes various methods of forming patterns such as a method of chemically / physically depositing a fine metal component. can do.

For simplicity of description, one or more methods are shown and described herein as a series of steps, for example in the form of a flowchart or flow chart, but the invention is not limited by the order of the steps, for the present invention. It will be appreciated that the present invention may be performed in a different order or simultaneously with other steps than shown and described herein. Moreover, not all illustrated steps may have to implement a methodology in accordance with the present invention.

1 is a view showing a cross section and a plane of the anti-counterfeiting sheet 10 according to an embodiment of the present invention, (a) is a plan view of the second element 23, (b) is a counterfeit prevention sheet 10 (C) is a plan view of the first element 13.

Referring to FIG. 1, the anti-counterfeiting sheet 10 includes a first substrate 11 on which a first element 13 is printed and a second substrate (transparent substrate) 21 on which a second element 23 is printed. It is composed. Referring to FIG. 14, the first glyph 12 is designed and constructed with a plurality of first elements 13 and a first margin 16, and the second glyph 22 has a plurality of second elements 23. And the second margin 26 may be designed and described in detail with reference to FIG. 14.

The first substrate 11 may be a conventional paper substrate or a polymer substrate substrate, but is not necessarily limited thereto. In addition, the first base material 11 may use a transparent base material depending on the intended use, may use a base material having a predetermined light transmittance, or may use an opaque base material.

The second substrate 21 is a transparent substrate having a predetermined light transmittance, and may be formed by a general coating layer substrate or by thermally compressing a film substrate. The coating layer or the film is preferably a transparent material, the film is preferably a polymer material, but is not necessarily limited thereto.

Although the second substrate (transparent substrate) 21 is shown as one transparent layer in FIG. 1, various substrates having various light transmittances may be formed of several layers.

When the first and second substrates 11 and 21 are made of a substrate having a predetermined light transmittance, the transparent window effect can be produced.

The first element 13 may be printed on one surface of the first substrate 11. Referring to FIG. 1, a cross section (b) and a plan view (c) of the first element 13 are shown together, and in (b), the first element 13 has two parts on one surface of the first substrate 11. This is shown in the form of a cross-sectional view of A-A 'in the plan view (c) of the first element (13).

The second element 23 may be printed on the other surface of the laminated surface of the second substrate 21. Referring to FIG. 1, a cross section b and a top view a of the second element 23 are shown together.

The first element 13 or the second element 23 may be polygonal or circular in shape. Preferably, it may be a regular hexagon or a circle, but is not necessarily limited thereto. More preferably, a regular hexagon can be used because it can recognize a pattern (a first element or a second element) in multiple directions and can arrange many patterns per unit area in comparison to a circle. . The number of patterns per unit area is highly related to the size of the pattern to be displayed and the distance to be recognized. Details will be described with reference to FIG. 14.

The first margin 16 refers to the portion where the first element 13 is not printed on the printing surface of the first substrate 11.

The second margin 26 refers to the portion where the second element 23 is not printed on the printing surface of the second substrate 21.

The first element 13 and the second element 23 may be disposed and printed together with the margins 16 and 26 when printed on the first substrate 11 and the second substrate 21, respectively. This margin can produce the optical illusion effect described in FIG. 14.

When looking down the anti-counterfeiting sheet 10 (in the vertical direction from above the second base 21 or the second element 23), the first element 13 is concealed by the second element 23. It is not visible (or hidden or shielded). This is because the pattern width 25 of the first element 13 and the second element 23 is the same.

By the way, when the anti-counterfeiting sheet 10 is viewed from the side at a particular viewing angle 31, the second element 13 is visible (shown). That is, when viewed from the side at a particular viewing angle through the second margin 26, the first element 13 is visually recognized through the transparent substrate 21. It can be seen from the outside by the width 17 shown in FIG.

The effect recognized in this way can be variously adjusted according to the thickness or density of the second substrate (21).

There is an unprinted area inside the first element 13, which may be an invisible area when viewed 31 from the side at a particular viewing angle. Since this area is an area not visible from the outside, it is not necessary to print, but is not necessarily limited thereto. However, it is preferable that the illustrated width 17 is printed or designed.

2 is a view showing a cross section and a plane of the anti-counterfeiting sheet 20 according to another embodiment of the present invention. FIG. 2 will only be described with reference to FIG. 1.

2, the pattern width 15 of the first element 13 is larger than the pattern width 25 of the second element 23, and the thickness of the second substrate 21 is larger than that of FIG. 1. These two differences are to increase the visibility of the first element (13). To improve visibility, these two differences can be implemented at the same time, or only one of the two can be implemented.

In the case of the anti-counterfeiting sheet 10 shown in FIG. 1, when the anti-counterfeiting sheet 10 is viewed from above (vertically from above), the first element 13 is completely hidden by the second element 23. Invisible That is, the pattern width 25 of the 1st element 13 and the 2nd element 23 is the same.

By the way, in the case of the anti-counterfeiting sheet 20 shown in FIG. 2, when looking at the anti-counterfeiting sheet 10 from above (from above the second base 21), a part 18 of the first element 13 is present. Looks like The reason for doing this is to increase the visibility when the thickness of the second base material 21 is thin.

In addition, as the second substrate 21 becomes thicker or less visible, the hidden element may be more visible 33 when viewed from the side at a particular viewing angle, so that FIG. 2 is larger than the width 17 of FIG. Width 19 may be greater.

Therefore, by increasing the pattern width 15 and the widths 18 and 19 of the first element 13 and making the second base material 21 thicker, visibility at a specific viewing angle can be improved.

However, if the partial width 18 is made too large, the first element 13 may be exposed too much, which may hinder security. Therefore, the widths 15, 17, 18, and 19 may be used by using anti-counterfeiting sheets. It is desirable to adjust according to the application purpose.

In addition, in addition to the thickness of the second substrate 21, by adjusting the density, lightness, saturation, color, etc., various effects may be produced.

In addition, in order to improve visibility, the ink concentration of the first element 13 may be increased or the thickness of the ink may be increased.

In addition, the second element 23 may be thickened by screen printing or the density thereof may be increased to reduce the exposure of the first elements 13 and 14.

That is, when the printing method of each of the first elements 13 and 14 and the printing method of the second element 23 are applied differently, a wide variety of combination effects can be obtained.

3 is a view showing a cross section and a plane of the anti-counterfeiting sheet 30 according to another embodiment of the present invention.

FIG. 3 differs from FIG. 2 in that the first element printed on the first substrate 11 is composed (drawing or printing) of two color sub-elements 13 and 14.

For example, if the first element is composed of a red subelement 14 and a blue subelement 13, the first element is visually recognized at a particular viewing angle. Looking at (35), blue (13) is seen.

Therefore, when the first element is divided into sub-elements 13 and 14 for each specific direction and is drawn in a different color, different colors can be seen in each specific direction. In the present embodiment, the first element is designed in two directions of left / right, but the present invention is not limited thereto, and the first element may be divided into several directions. For example, the up / down directions may be configured in different colors, and the up / down / left / right may be configured in different colors.

That is, in forming the first elements 13 and 14, color conversion effects can be achieved by using general ink without using special ink such as expensive time-varying ink or color conversion ink.

In addition, if each of the first elements 13 and 14 is composed of complementary colors, the color conversion effect can be more dramatically exhibited.

In addition, when the fluorescent ink is used for the first elements 13 and 14, a stronger latent anti-counterfeiting effect may be achieved by the fluorescent latent image and the fluorescent color conversion effect according to the viewing angle. For example, a fluorescent ink may be used alone, a fluorescent material may be mixed with a general ink, or two layers of a general ink layer and a fluorescent ink layer may be formed by superimposition printing. At this time, the fluorescent layer may go above or below the normal ink layer.

In particular, when an invisible special ink reacting to a specific wavelength is used, effects such as fluorescence color conversion or fluorescence image conversion and fluorescence image inversion can be given according to the direction of the lamp scanning the specific wavelength.

Furthermore, if the above-described fluorescent ink and invisible special ink are used at the same time, anti-counterfeiting effect and product differentiation effect can be expected.

That is, the anti-counterfeiting sheet 30 according to the present invention can produce a fluorescent color conversion and a latent fluorescent effect depending on the viewing angle when fluorescent ink or the like is used for the first elements 13 and 14 constituting the first pattern 12. Therefore, it is possible to produce a strong anti-counterfeiting effect at low cost without using expensive special ink.

Figure 4 is a plan view of the first element printed on the anti-counterfeiting sheet according to another embodiment of the present invention. Referring to FIG. 4, the first element is composed of three sub-elements 13, 14, and 55 and is designed to appear in different colors in three directions.

In addition, four or more sub-elements can produce different colors in different directions.

In addition, the anti-counterfeiting sheet 30 according to the present invention uses different fluorescent inks for the first elements 13, 14, and 55 constituting the first pattern 12. Because of the latent image effect, it is possible to produce a very strong anti-counterfeiting effect at low cost without using expensive special ink.

Furthermore, a plurality of inks different in physical and chemical properties may be variously applied to the sub-elements of the first glyph 12 to be tailored to the purpose of security in various situations.

5 is a view showing a cross section and a plane of the anti-counterfeiting sheet 20 according to another embodiment of the present invention.

FIG. 5 shows that the pattern width 15 of the first element 13 is smaller than the pattern width 25 of the second element 23 in comparison with FIGS. 1 and 2. That is, the case opposite to the case of FIG. The reason for doing this is to make the latent image (or the first element 13 or the first pattern (see FIGS. 13, 14 and 21)) completely invisible when looking at the anti-counterfeiting sheet 20 vertically.

If the pattern width 15 of the first element 13 is equal to or larger than the pattern width 25 of the second element 23, this case is prevented because the latent image is immediately exposed when viewed slightly in the vertical direction. Can be used for the purpose of

Therefore, when the fluorescent ink is used for the first element of the present embodiment, the fluorescent pattern is not seen at all when viewed directly from above, but the fluorescent pattern is exposed only when tilted to some extent, so that the fluorescent latent image effect can be more dramatic.

6 is a view showing a cross section and a plane of the anti-counterfeiting sheet according to another embodiment of the present invention.

FIG. 6 differs from FIG. 2 in that the third element 57 is additionally formed and printed on the other surface of the first base 11, that is, the surface on which the first element 13 is printed.

The third element 57 may be polygonal or circular in shape and may constitute a third pattern (not shown). That is, the third pattern may be configured by being arranged with a plurality of third elements 57 and a third margin (not shown).

The third element 57 may be designed and configured with the same purpose as the second element 23 described with reference to FIG. 1. In addition, the third element 57 may have the same characteristics as the second element 23.

In this configuration, it is possible to utilize the visibility characteristics according to the viewing angle, direction and distance on both sides of the anti-counterfeiting sheet.

For example, the anti-counterfeiting sheet 20 of FIG. 6 can be applied to a security window that is frequently used as an anti-counterfeiting effect of money. That is, when both the first base material 11 and the second base material 21 are made of a transparent base material, the same effect can be obtained on both sides of the anti-counterfeiting sheet.

Figure 7 is a cross-sectional view of the anti-counterfeiting sheet according to another embodiment of the present invention.

7 is different from FIG. 2 or 6 in that an adhesive layer 59 is further formed between the first substrate 11 and the second substrate 21.

The second substrate 21 may be used by thermally compressing a coating layer or a film. However, in the case of a material without an adhesive component, an adhesive is required to allow the second substrate 21 to be laminated on the first substrate 11.

Therefore, the anti-counterfeiting sheet of FIG. 7 illustrates an example in which the adhesive layer 59 is formed by using an adhesive when the second substrate 21 is laminated on the first substrate 11 using the adhesive. In this case, it is preferable to use an adhesive of a transparent material, but the adhesive is not necessarily limited thereto.

If the adhesive with low light transmittance is used, the anti-counterfeiting sheet may be illuminated to produce an effect of determining the authenticity.

FIG. 7A illustrates a case in which an adhesive layer 59 is added to the anti-counterfeiting sheet of FIG. 2, and FIG. 7B illustrates a case in which an adhesive layer 59 is added to the anti-counterfeiting sheet of FIG. 6. When the adhesive layer 59 is included, the thickness of the anti-counterfeiting sheet may be substantially increased.

8 is a cross-sectional view of the anti-counterfeiting sheet according to another embodiment of the present invention.

FIG. 8 differs from FIG. 7 in that protective layers 61 and 63 are further formed on one or both surfaces of the anti-counterfeiting sheet.

The protective layers 61 and 63 are formed on the exposed surface of the first sheet 11 or the second sheet 21 as a functional coating layer to protect the printed pattern from damage to the outside and to increase recognition and anti-counterfeiting effect. Can be.

Figure 8 (a) is a case where the protective layer 61 is added to one surface of the anti-counterfeiting sheet of Figure 7 (a), Figure 7 (b) is a protective layer (61, 63) is added to both sides of the anti-counterfeiting sheet. If it is.

In addition, the protective layers 61 and 63 may be used as additional anti-counterfeiting layers. A layer of a deposited form may be applied or a pearl ink layer having a high reflectance may be applied. By introducing such a layer, the protective layers 61 and 63 introduced in the case of copying or forging by copying or scanning can be prevented from obtaining an accurate image.

9 is a cross-sectional view of the anti-counterfeiting sheet 40 according to another embodiment of the present invention.

9, the raw material of the second base material 21 is different from that in FIGS.

The second substrate 21 illustrated in FIG. 9 may be a film (a) having an emboss (27) formed therein or a film (b) having an emboss (27) formed on a surface thereof.

Using the emboss 27, the first element 13 can be more visible by the visual recognition 39 by the refraction at the emboss surface. That is, the effect of increasing the viewing angle is generated, the visibility is increased.

FIG. 9 (b) shows an example of using a film having an embossed 27 formed on the surface thereof. In this case, the second element 23 or the second pattern 22 may be printed on the surface of the embossed 27. .

10 is a view showing a cross section and a plane of the anti-counterfeiting sheet 50 according to another preferred embodiment of the present invention.

Referring to FIG. 10, the difference from FIG. 3 is that one surface of the transparent element (second substrate, 21) is disposed on the first element (13, 14) without using the first substrate (11). Is formed on the other side of the printed surface). That is, the first element 13 and 14 and the second element 23 are printed or deposited on both surfaces of the transparent substrate 21. Here, the transparent substrate may be a substrate of various materials having a predetermined light transmittance.

The difference from FIG. 3 described above is for ease of printing, which will be described.

As shown in FIG. 3, a case in which the first elements 13 and 14 are formed on the first substrate 11 and the second element 23 is formed on the transparent substrate 21 will be described with reference to FIGS. 14 to 19. There is a difficulty in precisely matching the coordinates (positions) of the first and second elements in order to show the visual characteristics.

That is, if the coordinates of the first and second elements formed on different substrates are not precisely matched, a problem may arise in that the visibility characteristics according to the preplanned viewing angle, direction, and distance are different.

Therefore, in order to solve this problem, printing or depositing the first and second elements on both sides of the transparent substrate 21 without using the first substrate 11 makes it easier and more precise to match the first and second elements. As a result, the same effects as in FIG. 3 can be obtained. That is, in the present embodiment, the configuration or characteristics of the various embodiments described with reference to FIGS. 1 to 5 and 9 may be applied in the same way, or the corresponding effects may be the same.

Although the transparent substrate (second substrate, 21) is shown as one transparent layer in the drawing, various substrates having various light transmittances may be formed of several layers.

In addition, one or more layers of the anti-counterfeiting sheet 50 may be further formed with a special effect layer, such as at least one layer, a reflective layer, a protective layer or a hologram.

In addition, since the transparent substrate 21 is used, the additional layer, the reflective layer, the protective layer, or the special effect layer can also produce a transparent window effect if the substrate has a predetermined light transmittance.

The above-described method of manufacturing the anti-counterfeiting sheet 50 is a double-sided printing or deposition on a transparent substrate (second substrate, 21), the other surface after forming the first pattern 12 on one surface of the transparent substrate 21 The second pattern 22 may be printed on the second pattern, or the second pattern 22 may be printed first, or the first and second patterns 12 and 22 may be simultaneously printed. After formation of the first and second glyphs 12 and 22, an additional layer such as a double layer or a protective layer may be formed.

In addition, when the transparent base material 21 is formed of several transparent layers, the transparent base material 21 may be prepared in advance before the first and second patterns 12 and 22 are formed.

The printing of the first and second patterns 12 and 22 may use gravure printing, screen printing, flexographic printing, offset printing, inkjet, laser printing, or the like.

Therefore, the manufacturing method is much easier, cheaper and more precisely manufactured since it is a double-sided printing that does not require registration that requires high precision, compared to the manufacturing method of the embodiment of FIG. There is an advantage.

11 is a view showing the property of viewing the anti-counterfeiting sheet using the visibility characteristics according to the viewing angle, direction and distance according to another preferred embodiment of the present invention from both sides.

Referring to FIG. 11 (a), the visibility characteristics of the anti-counterfeiting sheet 50 of FIG. 10 are described, and the same as the visibility characteristics of FIG. That is, if the first element is composed of a red sub-element 14 and a blue sub-element 13, the first element is visually recognized at a specific viewing angle, but when viewed from the left 37, the red sub-element 14 is seen and the right Looking at (35), the blue sub-element 13 is visible.

By the way, with reference to FIG. 11 (b), the effect different from the visibility characteristic of FIG. 3 is shown.

When the anti-counterfeiting sheet 50 is viewed from the lower left side, when looking at the blue sub-element 13 (43) blue is visible, when looking at the red sub-element 14 (41), specifically, the red is the second element. It is darkened by mixing with the color of (23) and changes to another color. The reason for this is that the color of the second element 23 passes through the transparent substrate 21 and is seen between the particles of the sub element 14, and the two colors are mixed by optical illusion due to interference.

As an example, if the color of the second element 23 is white, when the anti-counterfeiting sheet 50 is viewed from the lower left side (41, 43), blue, red, and white may be mixed to produce a color conversion that appears close to blue. do.

On the contrary, when the anti-counterfeiting sheet 50 is viewed from the lower right side, when looking at the red sub-element 14 (47), the red color is visible, but when looking at the blue sub-element 13 (45), the blue color is unusually Mixed with the color of the second element 23 is darkened and changed to a different color.

As an example, if the color of the second element 23 is white, when the anti-counterfeiting sheet 50 is viewed from the lower right (45, 47), blue, red, and white may be mixed to produce a color conversion that appears closer to red. do.

Summarizing the above characteristics, the anti-counterfeiting sheet 50 when viewed from the left side of the upper, red when viewed from the right, blue is seen, the anti-counterfeiting sheet 50 when viewed from the lower left, similar blue, when viewed from the right side The unique effect of seeing a similar red color occurs.

In addition, in the above-described embodiment, when the color of the second element 23 is different from white, an effect of converting the color of the second element 23 into a completely different color other than red or blue when viewed from the bottom occurs.

As described above, the first and second patterns are formed on both surfaces of the transparent substrate (second substrate, 21) by forming a plurality of elements and margins, and the first and second patterns are visually recognized through the blanks. ) And the size, regularity, number of each of the margins 16 and 26, the color, the ink thickness, the saturation, the brightness of the elements 13, 24 and 23, and the thickness and density of the transparent substrate 21, respectively. Based on the viewing angle, direction, and distance, the optical illusion may change the vividness of the pattern, the color, the pattern, or the pattern conversion.

In addition, when the pattern or element is formed on the substrate, the above-described effects can be controlled by using a printing or deposition method. When the ink is applied and printed, many colors of the second element 23 are visible between the ink particles, while the effect is largely blocked in the case of deposition using finer metal component particles. Therefore, a printing method may be used to maximize the transparent window effect, and a deposition method may be used to maximize the latent image effect.

In addition, the use of screen printing increases the thickness of the ink, thereby increasing the effect of latent images and color conversion.

In addition, each of the elements 13, 24, 23 may have different combinations of effects by applying different kinds of printing or deposition methods.

12 is a cross-sectional view of a sticker (or recut) applied to the anti-counterfeiting sheet utilizing the visibility characteristics according to the viewing angle, direction and distance according to another preferred embodiment of the present invention.

Referring to FIG. 12, the anti-counterfeiting sheet 50 of FIG. 10 further includes an adhesive layer 59 covering the first elements 13 and 14 printed on one surface of the transparent substrate 21, and a release paper on the adhesive layer. (75) abuts.

When the release paper 75 of the sticker 50 is separated, a portion in which the first elements 13 and 14 covered by the adhesive layer 59 are damaged or separated is generated, and the damaged paper 75 is damaged through the second margin at a predetermined viewing angle. Since the first glyph is visually recognized, the visibility characteristic according to the viewing angle, direction, and distance of the anti-counterfeiting sheet 50 is lost in this portion. That is, if the label of the color conversion function to which the present embodiment is applied is arbitrarily attempted, the time varying angle (color conversion) function may be partially or partially disappeared.

Therefore, the sticker according to the present embodiment can be used for anti-counterfeiting or operation identification security label.

13 shows a plan view of various modified embodiments of the first and second elements.

Referring to FIG. 13A, the second element 23 of FIG. 3 is elongated vertically. In this embodiment, when the first elements 14 and 13 are viewed from the left and right, the upper and lower parts of the first elements 14 and 13 are also viewed together, thereby preventing the effect from being halved. That is, since the portion where the second element 23 is elongated covers the upper and lower portions of the first element 14 and 13, the left and right visibility characteristics can be enhanced.

In addition, if the color of the first element 14 and the color of the second element 23 are the same, and the color of the first element 13 is different, the color conversion may occur only when the right side is visually recognized.

Referring to Figures 13 (b) and (c), the center margins of the first elements 14, 13 are biased to the left, and the sizes of the red subelement 14 and the blue subelement 13 are asymmetric. The first element 23 is also biased to the left. This embodiment has the effect of asymmetrical left and right visibility characteristics.

FIG. 13 (d) adds a hexagon ring 53 to the center of the embodiment of FIG. 4. Then, changing the viewing angle on the anti-counterfeiting sheet 50, the sub-elements (13, 14, 55) and the hexagonal ring (53) appear in succession, as if the first pattern is moving.

As described above, adjusting the first and second elements to include sub-elements having different colors or different shapes may produce a wide variety of visual characteristics, and is not limited to the above-described embodiments, and various variations and combinations are possible.

14 is a plan view of the anti-counterfeiting sheet according to another embodiment of the present invention. In FIG. 14, an embodiment in which the first elements 13 and 14 and the second element 23 described in FIG. 3 are applied to an actual pattern will be described.

Referring to FIG. 14, (a) includes a plurality of second elements 23 and a second margin constituting the second pattern 22 (honeycomb shape) and the second pattern 22 printed on the second substrate 21. (26) is shown and (b) a plurality of first elements (13, 14) constituting the first pattern (12, S letter) and the first pattern (12) printed on the first substrate (11). And a first margin 16 are shown.

Referring to FIG. 14A, a plurality of second elements 23 may form a second pattern 22 together with a margin 26. The second element 23 is regularly arranged in a honeycomb shape of a regular hexagon so as to have the advantage of arranging a large number of patterns per unit area, but is not necessarily limited thereto.

The reason why the plurality of second elements 23 are regularly arranged in a honeycomb shape together with the second margins 26 is provided through the margins 26 between the second elements 23 arranged in the honeycomb pattern. For the elements 13, 14 to be visible at certain viewing angles 31, 33, 35, 37. That is, the viewing characteristics of the first glyph 12 change according to a specific viewing angle, direction, and distance through the second margin 26.

Referring to FIG. 14 (b), the plurality of first elements 13 and 14 may form an S letter as the first pattern 12 together with the margin 16. The first elements 13 are regularly arranged in a regular hexagonal honeycomb like the second element 23 such that all or part of each of the first elements 13 is hidden (shielded) by the second element 23. In the enlarged part 53 of (a) and (b), the 1st element 13 and 14 and the 2nd element (at the same position (coordinate) of the 1st base material 11 and the 2nd base material 21 are shown). 23) will exist in pairs up and down as in FIG. That is, it is preferable that the part (53) is formed up and down on the same position (coordinate) on a security paper sheet.

When the first and second elements are disposed as described above, as described in FIG. 3, when the anti-counterfeiting sheet 30 is viewed from above, the first patterns 12 and the first elements 13 are hardly exposed. At certain viewing angles 31, 33, 35, 37 the first glyph 12 and the first elements 13, 14 are partially exposed between the margins 26 of the second substrate 21. In addition, since the first elements 13 and 14 are configured in different colors, the first elements 13 and 14 are displayed in different colors in a specific direction.

Then, the visual characteristic according to the distance will be described. While viewing from the specific direction and the specific viewing angle described above, the distance from the first glyph 12 will be gradually viewed. Then, the first elements 13 and 14 which are strangely separated from each other are brought together as one. This is due to the optical illusion of the human eye over distance.

As the distance from the user's eye to the first pattern 12 (S-shape) increases, the first elements that are separated from each other gradually appear as one. That is, the S-shape is not recognized when it is close, but as the S reaches a certain distance, the S starts to be recognized, and when the S reaches a certain distance, the S elements become clearer as the first elements that are separated are attached. In addition, a difference in sharpness of an image according to a distance may occur depending on the distance between the pattern (first and second elements) and the pattern, the pitch of the pattern, the width of the pattern, the size of the pattern, the regularity of the pattern, and the number of patterns. Can be.

Increasing the size of the margin 16 may maintain the effect of a certain distance from which the first elements are attached to be separated or separated. On the other hand, when the size of the margin 16 is reduced, the specific distance at which the first elements are attached becomes smaller.

In addition, when a portion of the first pattern 12 is designed to be free of the margins 16, the color conversion effect may be further varied.

In addition, the sharpness of the image may be further improved by using the example of FIG. 9.

Referring to FIG. 15 (a), the anti-counterfeiting sheet of FIG. 14 is viewed vertically, and the first glyphs 12 (S-shaped) are almost or completely hidden and are not visible.

Referring to FIG. 15 (b), as the anti-counterfeiting sheet according to the present invention is visually recognized at the left direction, at a specific angle, and at a specific distance, it can be seen that the red first pattern 12 (S-shaped) is recognized.

Referring to FIG. 15 (c), the anti-counterfeiting sheet according to the present invention is recognized at a right direction and at a specific angle and at a specific distance, and the first pattern of blue instead of the red first pattern (12, S letter) ( 12, the letter S) can be seen.

In addition, when the left and right shapes of the first elements 13 and 14 are configured to have different shapes, the patterns when viewed from the left side and when viewed from the right side are recognized differently.

That is, if the sub-elements of the first elements 13 and 14 are given a variety of colors, shapes, etc., different patterns may be seen depending on the viewing direction.

In addition, the above-described embodiment may also be applied to the third element 57 of the anti-counterfeiting sheet according to the embodiments of FIGS. 6, 7 (b) and 8 (b). That is, through the third pattern (not shown) composed of the third element 37 and the margin, the above-described effects can be seen in both directions of the anti-counterfeiting sheet.

In addition, using the embodiment of FIG. 10, the color conversion and latent image effects on both sides may be further obtained.

As can be seen in this embodiment, the anti-counterfeiting sheet according to the present invention may have a feature that changes the sharpness of the pattern, the color changes, the pattern is expressed, or the pattern is changed according to a specific viewing angle, direction and distance. have.

16 and 17 are views showing the forgery prevention sheet visually recognized at a specific viewing angle, direction, and distance according to another embodiment of the present invention.

Referring to FIG. 16, in comparison with FIG. 14, a star-shaped second pattern 51 is shown on the second base 21. That is, the second patterns 22 and 51 may be printed using a plurality of inks having different reflectances.

In the second glyph 51 of the present embodiment, a pearl function ink having a high reflectance was applied. In other words, by using a general ink for the portion (a) that is not a star shape, and applying a high reflectance ink to the star portion (b), the star is exposed according to the viewing angle.

Referring to FIG. 17, it can be seen that (a) shows a second pattern 51 (star shape) at a specific viewing angle. That is, the star 51 to which the ink with high reflectance is applied is perceived to be close to white.

In addition, referring to Figure 17 (b), the anti-counterfeiting sheet is shown to be recognized at the left direction and a specific angle, a certain distance, the second pattern (51, star shape) is blurred and the red first pattern (12, It can be seen that the letter S is clearly recognized.

In addition, referring to Figure 17 (c), the anti-counterfeiting sheet is shown to be recognized at the right direction and a specific angle, a certain distance, the second pattern (51, star shape) is blurred and the red first pattern (12, It can be seen that the first blue pattern 12 (S letter) is clearly recognized instead of S letter).

As can be seen in this embodiment, the anti-counterfeiting sheet according to the present invention has a feature that changes the vividness of the pattern, the color changes, the pattern is expressed, or the pattern conversion occurs according to a specific viewing angle, direction and distance Can be.

18 is a view of applying a forgery prevention sheet to a QR code according to another preferred embodiment of the present invention.

The embodiment shown in FIG. 18 uses the embodiment shown in FIG. 1 or 5, and the pattern width 15 of the first element 13 is equal to or greater than the pattern width 25 of the second element 23. When configured to be small, when the anti-counterfeiting sheet 20 is viewed from above, the anti-counterfeiting sheet is used so that the first element 13 is completely shielded and not visible.

In order to use the QR code as the second pattern 22, the QR code is composed of the plurality of second elements 23 and the second margins 26 in the above-described manner. The first pattern 12 uses a heart shape. The heart shape used here is a kind of fictional image that has nothing to do with QR code.

Then, when the anti-counterfeiting sheet is visually recognized at a certain distance directly above the second pattern 22, the QR code is visually recognized as shown in FIG. That is, due to the optical illusion according to the distance described with reference to FIG. 14, the second elements 23 separated from each other are collected together, and the shape of the QR code is recognized.

However, when the anti-counterfeiting sheet according to the present embodiment is viewed from the side at a particular viewing angle 31, the second element 13 is recognized. That is, the heart shape is visible as shown in Fig. 18 (b).

Therefore, the embodiment can be used for preventing forgery or authenticity check by the presence of a heart shape.

In addition, when copying or scanning the anti-counterfeiting sheet, the separate second elements 23 are copied as they are so that the normal QR code shape is not copied. Therefore, the copy protection effect can be achieved.

In other words, if you copy the surface of the anti-counterfeiting sheet, the QR code is copied to the plurality of second elements 23 and the second margins 26 separated from each other. Will look.

Of course, the QR code photographed on the smartphone looks a bit blurry, but there is no big problem in recognition.

19 is a view showing another embodiment in which the anti-counterfeiting sheet according to the present invention is applied to a QR code.

Referring to FIG. 19, the present embodiment uses the embodiment shown in FIG. 2, and the pattern width 15 of the first element 13 is larger than the pattern width 25 of the second element 23. When the anti-counterfeiting sheet 20 is viewed from above the second pattern, the anti-counterfeiting sheet 20 is used so that a part of the first element 13 is visible.

In order to use the QR code as the first pattern 12, the QR code is composed of the plurality of first elements 13 and the first margins 16 in the above-described manner. At this time, a square QR code is transformed into a trapezoidal shape as shown in FIG.

And, the second element 23 is composed of regular very small points.

Then, when the anti-counterfeiting sheet 20 is recognized at a certain distance from directly above the second glyph, the first elements 13 separated from each other due to the optical illusion according to the distance described in FIG. QR code shape of trapezoidal shape ”is visually recognized (FIG. 19 (a)). At this time, the QR code may look somewhat blurred depending on the viewing distance.

However, when the anti-counterfeiting sheet according to the present embodiment is viewed from the right at a specific viewing angle (31), the second element 13 is recognized, so that QR codes having a normal square shape can be seen as shown in FIG. do.

In other words, the QR code according to the present embodiment is visually recognized at a specific viewing angle and distance, otherwise the deformed (distorted) QR code is visually recognized or blurred QR code is visually recognized.

Therefore, if you shoot with a smartphone at a certain viewing angle and distance, you can recognize the QR code.

In addition, when copying or scanning the anti-counterfeiting sheet according to the present embodiment, the second elements 23 are copied together while being copied while numerous points are embedded in the QR code. Therefore, the copy protection effect can be seen.

Therefore, the conventional security QR code is limited to scan or copy, using the present technology, when scanning or copying, random patterns and shapes are exposed together, so the scanning or copying is not accurate and the QR code function is lost. Will fall. That is, (1) the authenticity can be confirmed by checking an arbitrary pattern, and (2) the two effects of the QR code not operating normally can be seen at the same time.

In FIG. 18 and FIG. 19, the anti-counterfeiting sheet according to the present invention is applied to a QR code. However, the present invention is not limited thereto, and the anti-counterfeiting sheet according to the present invention may be applied to various marks such as a barcode, an emblem, or a logo.

In the embodiment of FIG. 19, however, it is preferable to design the mark in a shape in which the mark is distorted and deformed so as to be recognized as a normal mark at a specific viewing angle and distance.

20 is a view showing the application of the anti-counterfeiting sheet according to the present invention to a credit card, an embodiment to further improve the security by applying the embodiment of Figure 3 and 10 together.

Referring to FIG. 20, the embodiment of FIG. 3 may be used for the opaque region 71. In the configuration of FIG. 3, an opaque material is used for the first substrate 11, and the surface of the credit card is used for the second element 23. A pattern may be formed including the second margin 26, and the first elements 14 and 13 may use red and blue subelements.

Then, there is no latent image or color conversion effect on the back side of the card, but on the front side of the card, the first elements 14, 13 are placed at a specific viewing angle, direction and distance through the transparent substrate 21 between the second margins 26. To be seen.

The transparent region 73 may implement a security window using the embodiment 50 of FIG. 10. That is, the transparent window effect occurs between the second margins 26 through the transparent substrate 21 at a specific viewing angle, direction, and distance. In addition, at another particular viewing angle, direction and distance, the first elements 14, 13 are visible between the second margins 26 through the transparent substrate 21. In addition, on the opposite side, the second elements 23 are visible between the first margins 16 through the transparent substrate 21.

A portion other than the transparent region 73, that is, the opaque region 71 may selectively block the transparent window effect through the multiple printing covering the first and second patterns of FIG. 10.

In addition, it may be configured in a form separated into a white core layer and a transparent core layer of at least one layer of one or more layers.

As described above, various embodiments of the anti-counterfeiting sheet according to the present invention can implement a latent image and a transparent window with a variety of effects, in the present embodiment, but not limited to examples of credit cards, polymer banknotes or transparent PET bottles It can be applied to various security labels.

21 and 22 are views and a flowchart showing a method of recognizing the authenticity of the anti-counterfeiting sheet to the user terminal 67 according to another embodiment of the present invention.

Referring to FIG. 21, one or more identification patterns 65 are additionally designed and printed on the first substrate 11 as compared with FIG. 14B. In addition, the user's terminal (smartphone, etc.) to show or photograph the anti-counterfeiting sheet at a particular viewing angle, direction and distance. The user terminal 67 may include a camera and an application (APP).

The identification pattern 65 may be formed so as not to be identified when the user (general person) is seen in a predetermined area of the periphery of the main pattern (the first pattern 12) formed or overlapping the area where the main pattern is formed. On the other hand, it is possible to form additional patterns of various shapes (such as shapes, dots, lines, etc.) that can be identified through the identification device (smartphone 67, etc.). In addition, the identification pattern 65 may be composed of a specific color designated in advance, or may be composed of ink of a specific material.

In this case, the identification pattern 65 may include a fictional pattern that is printed as needed but does not have a certain functionality.

In addition, like the first pattern 12, the identification pattern may be designed to include a plurality of first elements 13 and 14 and a first margin 16.

The identification pattern 65 may be used as recognition coordinates visually recognized at a predetermined viewing angle by the identification device 67, or may be used for additional authenticity checking of a test object. The authenticity can be checked.

In the present embodiment, a smartphone has been exemplified as the identification device 67, but the present invention is not necessarily limited thereto. Various types of user terminals 67 may include a camera and a processor capable of driving an app or an application. For example, it may be a tablet or a notebook, or a PC to which a camera is connected.

Referring to Figure 22, according to another embodiment of the present invention is a flow chart (S70) showing an exemplary method for recognizing the authenticity of the anti-counterfeiting sheet to the user terminal.

In operation S71, the app may receive an image by viewing or photographing the anti-counterfeiting sheet using a camera of the user terminal 67 at a specific viewing angle, direction, and distance.

In operation S73, the app may detect the identification pattern 65 in the input image. At this time, the app may have information about the identification pattern 65 in advance. Then, the identification pattern 65 may be detected, and the authenticity may be recognized by comparing the presence or absence of the identification pattern with the previously stored identification pattern.

As described above, the anti-counterfeiting sheet according to the present invention can easily recognize the authenticity of the anti-counterfeiting sheet to the user terminal 67.

Although a smart phone is used as the user terminal 67 in the present embodiment, the present invention is not limited thereto, and a user device such as a microscope or a magnifying glass having a lens may be used.

Embodiments of the authenticity recognition method described above may be implemented in the form of program instructions that may be executed through various computer components. In addition, the program implemented in the form of instructions may be recorded in a computer-readable recording medium. The mentioned recording medium may be a ROM, a magnetic disk or a compact disk, an optical disk, or the like, but is not necessarily limited thereto.

As described above, the present invention forms the first and second patterns on both sides of the transparent base material by forming a plurality of elements and margins and is visually recognized through the margins, so that each of the elements 13, 14, 23 and the margins 16, 26 may be formed. Based on various combinations of size, regularity, number, brightness, saturation, color of each element 13, 14, 23, and thickness, density, lightness, saturation, color, etc. of the second substrate 21, the viewing angle, An anti-counterfeiting sheet and a method of manufacturing the same may be provided in which the vividness of a pattern is changed, a color is changed, a pattern is expressed, or a pattern is changed depending on a direction, a position and a distance.

According to the present invention, high anti-counterfeiting effects such as time-varying (color conversion), latent images, transparent windows, etc. can be achieved without using expensive special inks, complicated printing processes, or using special materials. In other words, it is possible to use inexpensive materials such as general ink, and can be manufactured in a single process using existing processes such as flat printing.

In particular, the use of a fluorescent ink or the like in the first pattern 12 can produce a fluorescent color conversion and a latent fluorescent effect according to the viewing angle, thereby producing a strong anti-counterfeiting effect at a low cost.

In addition, the transparent window effect according to the present invention can also produce a strong anti-counterfeiting effect by easily adjusting the same or different colors visible from both sides.

In addition, the present invention can be applied to a mark such as a QR code to produce an effect of preventing copying and scanning, and can also be used as an anti-counterfeiting label.

In addition, the above effects can be applied simultaneously, thereby maximizing security.

Therefore, it is easy to use in low cost product range or small quantity product range. Applicable products may include security products such as cards, polymer banknotes, security labels, stickers, recuts, copy paper, hidden wires, transparent windows, certificates, tags, and commercial products such as wallpaper, labels, wrapping paper, and shrink film. have. In addition, the anti-counterfeiting sheet according to the present invention can easily identify the authenticity (level 1). In other words, it does not need a specific temperature or a special light source, it is easy to determine the authenticity by photographing at a certain viewing angle with a smartphone equipped with a camera, a microscope or a magnifying glass.

As described above, the present invention has been described with reference to the embodiments illustrated in the drawings, which are merely exemplary, and various modifications and equivalent other embodiments may be made by those skilled in the art. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

10, 20, 30, 40, 50: anti-counterfeiting sheet
11: entry 1
12: First Glyph
13, 14: first element or subelement
16: first margin
21: Second Base
22: Second Glyph
23: second element
26: second margin
27: emboss
31, 33, 35, 37, 41, 43, 45, 47: viewing angle
53, 55: subelement
57: third element
59: adhesive layer
61, 63: protective layer
65: identification pattern
67: user terminal
71: opaque area
73: transparent area
75: release paper

Claims (20)

A transparent substrate having a first pattern formed on one surface and a second pattern formed on the other surface;
Including,
The first pattern is designed to include a plurality of first elements and a first margin,
The second pattern is designed to include a plurality of second elements and a second margin,
When viewed from directly above the second element, all or part of the first element is hidden by the second element,
The first pattern is anti-counterfeiting sheet, characterized in that visible at a predetermined viewing angle through the second margin.
The method of claim 1,
The second pattern is anti-counterfeiting sheet, characterized in that visible at a predetermined viewing angle through the first margin.
The method of claim 1,
Further comprising an adhesive layer on the surface on which the first pattern of the transparent substrate is printed,
When the adhesive layer is damaged, the first pattern in contact with the adhesive layer is damaged, and the damaged first pattern is recognized through the second margin at the predetermined viewing angle.
The method of claim 1,
The anti-counterfeiting sheet, characterized in that the plurality of first elements or second elements are arranged regularly.
The method of claim 1,
According to the angle, direction, or distance of viewing the first glyph through the second margin, the first glyph may vary in vividness, color, glyph, or glyph transition. Anti-counterfeiting sheet.
The method of claim 1,
The anti-counterfeiting sheet is characterized in that the transparent substrate is composed of one or more layers having a predetermined light transmission.
The method of claim 1,
The first element includes a plurality of sub-elements formed of different colors or different shapes or different inks, and the different colors or shapes or inks according to the direction in which the first element is viewed through the second margin. Anti-counterfeiting sheet, characterized in that each is visually recognized.
The method of claim 1,
And the plurality of second elements is formed using a plurality of inks having different reflectances.
The method of claim 1,
The first pattern or the second pattern is anti-counterfeit sheet, characterized in that formed by any one or more combination of gravure printing, screen printing, flexographic printing, offset printing, inkjet, laser printing and deposition.
The method of claim 1,
The plurality of first elements are anti-counterfeit sheet, characterized in that collected by the optical illusion when viewed at a certain distance through the second margin.
The method of claim 1,
The anti-counterfeiting sheet, characterized in that the transparent substrate is embossed.
The method of claim 1,
And when the first element is recognized from above the first element, the color of the first element is visually recognized by a different color due to an optical illusion caused by interference with the second element.
The method of claim 1,
A predetermined mark is designed with the first glyph comprising a plurality of first elements and a first margin,
In order to allow the predetermined mark to be recognized as a normal mark at a specific viewing angle and distance, the anti-counterfeiting sheet, characterized in that the shape of the mark is designed to be distorted and deformed.
The method of claim 13,
The predetermined mark is a forgery prevention sheet, characterized in that the QR code or barcode or logo.
The method of claim 1,
Anti-counterfeiting sheet, characterized in that the visibility of the first pattern is visible through the second margin as the thickness of the transparent substrate is increased or the density is lowered.
The method of claim 1,
The first pattern or the second pattern is anti-counterfeiting sheet, characterized in that formed by double-sided printing or double-sided deposition.
The method of claim 1,
Applying fluorescent ink to the first element,
When viewed from directly above the second element, all or part of the first element is hidden by the second element,
The first element is visually visible at a predetermined viewing angle through the second margin,
Anti-counterfeiting sheet characterized in that the fluorescent latent image properties appear.
The method of claim 1,
The first element includes a plurality of sub-elements formed of fluorescent inks having different physical or chemical properties or different colors,
By allowing the fluorescent ink of the different characteristics or different colors to be visually recognized according to the direction of viewing the first element through the second margin,
Anti-counterfeiting sheet, characterized in that the fluorescent color conversion characteristics appear.
An application (APP); And
In the method for recognizing the authenticity of the anti-counterfeiting sheet according to claim 1 with a user device having a camera or a lens,
The first pattern is designed to include a predetermined identification pattern,
The app,
Receiving an image of the anti-counterfeiting sheet through the camera or lens; And
Recognizing authenticity by detecting the identification pattern in the input image;
Including but not limited to:
The camera or lens receives the image from the image at a particular viewing angle, direction or distance,
And the user device includes information on the identification pattern in advance.
The method of claim 19,
The identification pattern is characterized in that it comprises a plurality of first elements and a first margin, anti-counterfeit sheet authenticity recognition method.

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