KR102269582B1 - Anti-counterfeiting sheet for preventing forgery and verifying authenticity and recognition method thereof - Google Patents

Abstract

The present invention forms the first and second patterns on both sides of a transparent substrate with a plurality of elements and blanks and allows them to be recognized through the blanks, so that the sharpness of the patterns changes due to an optical illusion depending on the viewing angle, direction, and distance, or the color changes It is characterized in that it provides an anti-counterfeiting sheet and a method of manufacturing the same to change, to express a pattern, or to cause a pattern change to occur. According to the present invention, high anti-counterfeiting effect such as color conversion, latent image, transparent window, fluorescent color conversion, fluorescent latent image, latent image QR code, etc. without using expensive special ink, complicated printing process, or using special material can pay In addition, by shooting at a specific viewing angle, direction, and distance with a smart phone, a microscope, a magnifying glass, etc., there is an effect of easily grasping the authenticity.

Description

Anti-counterfeiting sheet for prevention of forgery and verification of authenticity and method for recognizing the same {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 viewing angle, direction, and distance to prevent forgery and verify authenticity. More specifically, it is printed with ordinary ink rather than expensive special ink or complicated special process. Inexpensive color shift, latent image, fluorescence color shift, fluorescence latent image, latent QR code, and security window using It relates to an anti-counterfeiting sheet that can implement. In addition, it relates to a method of recognizing the authenticity of the anti-counterfeiting sheet with a smartphone.

Various security effects such as visual change (color conversion), silver coin (watermark), silver wire, transparent window and latent image are applied to the anti-counterfeiting sheet. 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 thickness and density of paper or fibers, the part that transmits less light looks dark, and the part that transmits a lot of light. The silver is made to appear bright so that the shape of the silver coin is changed or expressed by the difference between light and dark. As a method of realizing a silver coin, a method of producing a silver coin using a laser is known in Korean Patent Registration No. 10-1213208. In addition, there are many known techniques for expressing or discoloring a pattern in a specific light or a specific temperature by using special inks such as various thermochromic or photochromic inks. Korean Patent Registration No. 10-0824286 discloses a technique related to a transfer paper using a discoloration property.

In the case of latent image technology, in general, by adjusting the line width or shape of a line formed by intaglio printing or forming a shape, it is a technology that allows different types of images to be viewed (viewed) according to viewing angles. Japanese Patent Application Laid-Open No. 2009-214304 discloses a technique in which a latent image pattern is formed by printing on a raised pattern. In addition, the effect of seeing different colors depending on the viewing angle is also used by using a special viewing angle (color conversion) ink.

However, the above-described anti-counterfeiting effects are achieved by using expensive special inks such as thermochromic, photochromic, or optically changing (color conversion) ink, or through a complicated special printing process such as intaglio printing, or using a special textile material. Alternatively, there is a problem in that the material cost is high or the manufacturing process is complicated, such as injecting a special effect in the sheet manufacturing stage.

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

An object of the present invention is to solve the problems of the prior art, specifically, by utilizing the visibility characteristics according to the viewing angle, direction, and distance, special ink such as color conversion ink, optically variable ink, or complex printing such as intaglio printing An object of the present invention is to provide an anti-counterfeiting sheet that can implement color conversion, latent image, fluorescent color conversion, fluorescent latent image, latent image QR code and transparent window at low cost using conventional ink and lithographic printing without using a process.

In addition, by recognizing and photographing at a specific viewing angle, direction, and distance with the user device, there is an effect that the authenticity can be easily determined.

In addition, it provides a method of easily recognizing the authenticity of the manufactured anti-counterfeiting sheet with a smartphone.

According to an embodiment of the present invention, a first pattern is formed on one surface and a transparent substrate having a second pattern formed on the other surface, and the first pattern includes a plurality of first elements and a second pattern. It is designed including one blank, and the second pattern is designed to include a plurality of second elements and a second blank, and when viewed from directly above the second element, all or part of the first element is the second element. There is provided an anti-counterfeiting sheet, which is hidden by an element, and the first pattern is recognized at a predetermined viewing angle through the second blank.

The second pattern may be recognized at a predetermined viewing angle through the first blank space.

The anti-counterfeiting sheet further includes an adhesive layer on the 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 blank at the predetermined viewing angle Through this, the damaged first pattern can be recognized.

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

Depending on the angle, direction, or distance at which the first pattern is recognized through the second blank, the clarity of the first pattern may change, the color may change, the pattern may appear, or a pattern change may occur.

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, different shapes, or different inks, and the different colors or shapes or inks according to a direction in which the first element is viewed through the second blank space can be acknowledged respectively.

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

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

When the plurality of first elements are viewed from a specific distance through the second blank space, the plurality of first elements may be viewed together by an optical illusion.

An embossing may be formed on the transparent substrate.

When the first element is viewed from above the first element, the color of the first element may be visually 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 blank space, and 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 can be designed in a deformed shape.

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

As the thickness of the transparent substrate increases or the density decreases, the visibility of the first pattern recognized through the second blank may increase.

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

Fluorescent ink is applied to the first element, wherein when viewed from directly above the second element, all or part of the first element is hidden by the second element, and the first element passes through the second blank By making it visually visible at a predetermined viewing angle, latent fluorescence image characteristics may appear.

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

According to another embodiment of the present invention, for achieving the above technical problem, App (APP; application); And in the method of recognizing the authenticity of the anti-counterfeiting sheet by a user device having a camera or a lens, the first pattern is designed including a predetermined identification pattern, and the app is receiving an image of the anti-counterfeiting sheet; and detecting the identification pattern in the received image to recognize whether it is authentic or not, wherein the camera or lens receives the image from the image at a specific viewing angle, direction or distance, and the user device recognizes the identification There is provided a method for recognizing the authenticity of the anti-counterfeiting sheet, characterized in that it includes information about the pattern in advance.

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

As described above, according to the present invention, by designing and forming the first and second patterns on both sides of the transparent substrate with a plurality of elements and a blank space, and allowing it to be recognized through the blank, the pattern is formed by optical illusion depending on the viewing angle, direction and distance. Color conversion, latent image, and transparent window effects can be achieved by changing the sharpness, changing the color, expressing the pattern, or causing the pattern change to occur. 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 can be manufactured in a single process using inexpensive materials such as flatbed ink and conventional processes such as flatbed printing. Therefore, it can be used in low-cost product groups or small-volume, multi-product products.

In addition, when fluorescent ink or the like is used for the pattern, it is possible to produce a fluorescent color conversion and a fluorescent latent image effect according to a viewing angle, thereby providing 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 colors seen from both sides to be the same or different.

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, since the above effects can be applied at the same time, security can be further maximized.

In addition, by recognizing and photographing at a specific viewing angle, direction, and distance with a user device such as a smart phone, there is an effect of easily grasping the authenticity.

1 is a view showing a cross-section and a plan view of an anti-counterfeiting sheet according to an embodiment of the present invention.
2 is a view showing a cross-section and a 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.
4 is a plan view of a first element printed on an 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 are cross-sectional views 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 characteristics of recognizing the anti-counterfeiting sheet according to another preferred embodiment of the present invention from both sides.
12 is a cross-sectional view of an anti-counterfeiting sheet according to another preferred embodiment of the present invention.
13 is a plan view of first and second elements printed on an 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 the recognition of the anti-counterfeiting sheet according to another embodiment of the present invention at a specific viewing angle, direction and distance. 16 and 17 are views showing the recognition of 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 the application of the anti-counterfeiting sheet according to the present invention to a credit card.
21 and 22 are views and flowcharts illustrating a method of recognizing the authenticity of an anti-counterfeiting sheet by a user terminal according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily carry out the present invention. In the following description, only the parts necessary for understanding the operation according to the embodiment of the present invention are shown and described, and the illustration and description of other parts are omitted so as not to obscure the gist of the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In addition, the terms or words used in the present specification and claims described below should not be construed as being limited to conventional or dictionary meanings, and meanings consistent with the technical spirit of the present invention so that the present invention can be most appropriately expressed. and should be interpreted as a concept.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

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

For simplicity of explanation, one or more methods are shown and described herein as a series of steps, by way of example, by way of example, in the form of a flowchart or flow chart, but the invention is not limited by the order of steps, since the invention is not limited thereto. It will be appreciated that, in accordance with the present disclosure, it may be performed in a different order or concurrently with other steps than those shown and described herein. Moreover, not all illustrated steps may be required to implement a method in accordance with the present invention.

1 is a view showing a cross-section and a plan view of a counterfeit prevention sheet 10 according to an embodiment of the present invention, (a) is a plan view of a second element 23, (b) is a counterfeit prevention sheet (10) is a cross-sectional view of, (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 the second element 23 is printed. is composed 14 , the first pattern 12 is designed and configured with a plurality of first elements 13 and a first blank 16 , and the second pattern 22 includes a plurality of second elements 23 . and the second blank 26 may be designed and configured, which will be described in detail with reference to FIG. 14 .

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

The second substrate 21 is a transparent substrate having a predetermined light transmittance, and may be formed by thermocompression bonding a conventional coating layer substrate or a film substrate. It is preferable to use a transparent material for the coating layer or film, and it is preferable to use a polymer material for the film, but is not necessarily limited thereto.

Although the second substrate (transparent substrate, 21 ) is illustrated as a single transparent layer in FIG. 1 , various substrates having various light transmittances may be configured as multiple layers.

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

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 is two parts on one surface of the first substrate 11 . , which is 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 lamination surface of the second substrate 21 . Referring to FIG. 1 , a cross-section (b) and a plan view (a) of the second element 23 are shown together.

The first element 13 or the second element 23 may have a polygonal or circular 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 has the advantage of being able to recognize a pattern (the first element or the second element) in multiple directions and arranging many patterns per unit area compared to a circle. . The number of patterns per unit area is highly correlated with the size of the pattern to be displayed and the distance to be recognized. The details will be described with reference to FIG. 14 .

The first blank 16 indicates a portion where the first element 13 is not printed on the printing surface of the first substrate 11 .

The second blank 26 indicates a portion where the second element 23 is not printed on the printing surface of the second substrate 21 .

When the first element 13 and the second element 23 are printed on the first substrate 11 and the second substrate 21 , respectively, they may be disposed and printed together with the blanks 16 and 26 . Through this blank space, an optical illusion effect, which will be described with reference to FIG. 14 , can be created.

When the anti-counterfeiting sheet 10 is viewed from above (in the vertical direction from the top of the second substrate 21 or the second element 23 ), the first element 13 is hidden by the second element 23 . obscured (or obscured, or obscured) invisible. The reason is that the pattern width 25 of the first element 13 and the second element 23 is the same.

However, when the anti-counterfeiting sheet 10 is viewed from the side at a specific viewing angle 31 , the second element 13 is visually recognized (seeing). That is, when viewed from the side through the second blank 26 at a specific viewing angle 31 , the first element 13 is visually recognized through the transparent substrate 21 . It can be visually recognized from the outside as much as the width 17 shown in FIG. 1 .

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

Inside the first element 13 is a non-printed area, which may be invisible when viewed from the side 31 at a specific viewing angle. Since this area is not visible from the outside, it is not necessary to print, but it is not necessarily limited thereto. However, the width 17 shown is preferably 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 respect to points different from FIG. 1 .

In FIG. 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 for increasing the visibility of the first element 13 . In order to increase visibility, these two differences may be implemented at the same time, or only one of the two may 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 don't look lost That is, the pattern width 25 of the first element 13 and the second element 23 is the same.

However, in the case of the anti-counterfeiting sheet 20 shown in FIG. 2, when the anti-counterfeiting sheet 10 is viewed from above (from the upper side of the second substrate 21), a portion 18 of the first element 13 looks like The reason for doing this is to increase visibility when the thickness of the second substrate 21 is thin.

In addition, as the second substrate 21 is thickened or when visibility is low, the hidden element can be seen more when viewed from the side 33 at a specific viewing angle, so that the width 17 of FIG. 1 is smaller than the width 17 of FIG. The width 19 of may be larger.

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

However, if this partial width 18 is too large, the exposure of the first element 13 may be too much and may impair security, so each of the widths 15, 17, 18, and 19 may be formed by the use of an anti-counterfeiting sheet or It is desirable to adjust it according to the purpose of application.

In addition to the thickness of the second substrate 21 , various effects may be achieved by adjusting the density, brightness, saturation, color, and the like.

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

In addition, the exposure of the first elements 13 and 14 may be reduced by forming the second element 23 thickly by screen printing or increasing the density.

That is, if 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 very diverse combination of 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.

3 is different from FIG. 2 in that the first element printed on the first substrate 11 is composed (designed or printed) of sub-elements 13 and 14 of two colors.

For example, if the first element is composed of a red sub-element 14 and a blue sub-element 13, the first element is recognized at a specific viewing angle, but when viewed from the left 37, the red 14 is visible, and the right When viewed from (35), blue (13) is visible.

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

That is, in forming the first elements 13 and 14, a color conversion effect can be achieved by using general ink without using special ink such as expensive optically variable ink or color conversion ink.

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

In addition, when fluorescent ink is used for the first elements 13 and 14, a stronger anti-counterfeiting effect can be produced by a fluorescent latent image and a 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, and two layers of a general ink layer and a fluorescent ink layer may be formed by overprinting. At this time, the fluorescent printing layer may go above or below the general ink layer.

In particular, if a non-visible special ink that responds to a specific wavelength is used, effects such as fluorescence color conversion or fluorescence image conversion, fluorescence image inversion, etc. can be imparted according to the directionality of the lamp scanning a specific wavelength.

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

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

4 is a plan view of a first element printed on an 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 be displayed in different colors in three directions.

In addition, if it is composed of four or more sub-elements, it is possible to produce the effect of seeing different colors in various directions.

In addition, in the anti-counterfeiting sheet 30 according to the present invention, when different fluorescent inks are used for the first elements 13, 14, 55 constituting the first pattern 12, various fluorescent color conversion and fluorescence according to various viewing angles are used. Because it can produce a latent effect, it is possible to produce a very strong anti-counterfeiting effect at a low cost without the use of expensive special ink.

Furthermore, a plurality of inks having different physical/chemical properties can be variously and freely applied to the sub-elements of the first pattern 12 to be customized for 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.

In FIG. 5 , the pattern width 15 of the first element 13 is smaller than the pattern width 25 of the second element 23 as compared with FIGS. 1 and 2 . That is, it is the opposite case to the case of FIG. 2 . The reason for doing this is to prevent the latent image (or the first element 13 or the first pattern (13, see FIGS. 14 and 21 )) from being completely seen when the anti-counterfeiting sheet 20 is viewed vertically.

If the pattern width 15 of the first element 13 is equal to or greater than the pattern width 25 of the second element 23, if you look in the vertical direction and tilt it even a little, the latent image is immediately exposed. It can be used when it is intended for

Therefore, when fluorescent ink is used for the first element of this embodiment, the fluorescent pattern is not visible at all when viewed from directly above, but the fluorescent pattern is exposed even when viewed from a certain angle, 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.

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

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

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

With 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 transparent window (security window) which is often used for the anti-counterfeiting effect of money. That is, when both the first substrate 11 and the second substrate 21 are transparent substrates, the same effect can be seen on both sides of the anti-counterfeiting sheet.

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

The second substrate 21 can be used by thermocompression bonding a coating layer or a film, but in the case of a material without an adhesive component, an adhesive is required for lamination to the first substrate 11 .

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

If an adhesive having low light transmittance is used, light may shine on the anti-counterfeiting sheet to have the effect of determining the authenticity.

7 (a) is a case in which the adhesive layer 59 is added to the anti-counterfeiting sheet of FIG. 2, and FIG. 7 (b) is a case in which the adhesive layer 59 is added to the anti-counterfeiting sheet of FIG. When the adhesive layer 59 is included, the thickness of the anti-counterfeiting sheet may be substantially increased, so it is good to take this into account when adjusting the thickness of the anti-counterfeiting sheet.

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

8 is different 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 exposed to the outside, etc. from being damaged and to increase the recognition or counterfeit prevention effect. can be

Fig. 8 (a) is a case in which a protective layer 61 is added to one surface of the anti-counterfeiting sheet of Fig. 7 (a), and Fig. 7 (b) is a case in which protective layers 61 and 63 are added to both sides of the anti-counterfeiting sheet. in case it has been

In addition, the protective layers 61 and 63 may be used as additional anti-counterfeiting layers, and a deposited layer may be applied or a high reflectance pearl ink layer may be applied. By introducing such a layer, it may be prevented from obtaining an accurate image due to the introduced protective layers 61 and 63 in the case of duplication or counterfeiting using copying or scanning.

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

In FIG. 9 , the material of the second substrate 21 is different from that of FIGS. 1 to 3 .

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

When the embossing 27 is used, the first element 13 can be more visually recognized by the viewing 39 by refraction on the embossed surface. That is, an effect of increasing the viewing angle is generated and visibility is increased.

9 (b) is an example using a film having an embossing 27 formed on the surface, in this case the second element 23 or the second pattern 22 can be printed on the surface of the embossing 27 .

10 is a view showing a cross-section and a plan view 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 the first element 11 is not used, and the first elements 13 and 14 are formed on one side of the transparent substrate (second substrate, 21 ) (the second element 23 ). is formed on the other side of the printed side). That is, the first elements 13 and 14 and the second element 23 are printed or deposited on both sides of the transparent substrate 21, respectively. 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 the convenience of printing, and this 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 express the characteristics of the viewer.

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

Therefore, in order to solve this problem, if the first and second elements are printed or deposited on both sides of the transparent substrate 21 without using the first substrate 11, the first and second elements are more easily and precisely matched. As a result, the same effect as that of FIG. 3 can be exhibited. That is, in the present embodiment, the configuration or characteristics of the various embodiments described with reference to FIGS. 1 to 5 and 9 are applied in the same manner or the corresponding effects are identically displayed.

Although the transparent substrate (the second substrate, 21) is illustrated as a single transparent layer in the drawings, various substrates having various light transmittances may be configured by forming a plurality of layers.

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

In addition, since the transparent substrate 21 is used, a transparent window effect can be achieved if the added multilayer, reflective layer, protective layer or special effect layer is also a substrate having a predetermined light transmittance.

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

In addition, in the case of forming the transparent substrate 21 as a plurality of transparent layers, it may be prepared in advance before the formation of the first and second patterns 12 and 22 .

Printing of the first and second patterns 12 and 22 may be performed by gravure printing, screen printing, flexographic printing, offset printing, inkjet printing, laser printing, or the like.

Therefore, the manufacturing method, compared to the manufacturing method of the embodiment of Fig. 1, which requires lamination (registration) after single-sided printing, is a double-sided printing that does not require registration requiring high precision, so it is much easier, cheaper and more sophisticated. There are advantages.

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

Referring to FIG. 11( a ), the visibility characteristics of the anti-counterfeiting sheet 50 of FIG. 10 are described, and it is shown that the visibility characteristics are the same as those of FIG. 3 . That is, if the first element is composed of the red sub-element 14 and the blue sub-element 13, the first element is recognized at a specific viewing angle, but when viewed from the left 37, the red sub-element 14 is visible, and the right When viewed from (35), the blue sub-element 13 is visible.

However, referring to FIG. 11(b) , an effect different from the visibility characteristic of FIG. 3 is shown.

When looking at the anti-counterfeiting sheet 50 from the lower left side, when looking at the blue sub-element 13 (43), blue is seen, but when looking at the red sub-element 14 (41), red is unusually the second element It is mixed with the color of (23) and darkened and changed to another color. The reason 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 an 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 are mixed to cause a color change that looks close to blue. do.

On the contrary, when looking at the anti-counterfeiting sheet 50 from the lower right side, when looking at the red sub-element 14 (47), red is seen, but when looking at the blue sub-element 13 (45), the blue color is unusually blue. It is mixed with the color of the second element 23 and appears to be changed to another color while darkening.

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 side (45, 47), blue, red, and white are mixed to cause a color change that looks close to red. do.

To summarize the above-described characteristics, when viewed from the upper left side, the anti-counterfeiting sheet 50 is red, when viewed from the right side, blue is seen. However, when viewed from the lower left side, the anti-counterfeiting sheet 50 is similar blue, when viewed from the right side. A unique effect of seeing a pseudo-red color occurs.

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

As described above, by forming the first and second patterns on both sides of the transparent substrate (the second substrate, 21) with a plurality of elements and a blank space, and allowing the first and second patterns to be recognized through the blank, the elements 13, 14, 23 ) and the blanks 16 and 26 in various combinations of size, regularity, number, color of each element 13, 24, 23, ink thickness, saturation, brightness, and thickness, density of the transparent substrate 21, etc. Based on this, depending on the viewing angle, direction, and distance, the clarity of the pattern may be changed, the color may be changed, the pattern may be expressed, or the pattern may be changed due to an optical illusion.

In addition, when the pattern or element is formed on the substrate, the above-described effect can be controlled by using a printing or deposition method. When printing is performed by applying ink, a large amount of the color of the second element 23 is seen between the ink particles, whereas in the case of deposition using finer metal component particles, the effect is largely blocked. 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, when screen printing is used, the thickness of the ink increases, so that the effect of latent images and color conversion can be increased.

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

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

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

When the release paper 75 of the sticker 50 is separated, the first elements 13 and 14 covered with the adhesive layer 59 are damaged or come off, and the damaged through the second blank at a predetermined viewing angle occurs. Since the first pattern is recognized, in this part, the viewing angle, direction, and distance of the anti-counterfeiting sheet 50 disappears. That is, if the label of the color conversion function to which the present embodiment is applied is arbitrarily forged or modulated, the visual change function (color conversion) function is completely or partially disappeared.

Therefore, the sticker according to the present embodiment can be used for counterfeit prevention or operation identification security label.

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

Referring to FIG. 13( a ), the second element 23 of FIG. 3 is vertically elongated. In this embodiment, when the first elements 14 and 13 are visually recognized from the left and right, the effect is prevented from being halved by the upper and lower portions of the first elements 14 and 13 are also visually recognized. That is, since the portion in which the second element 23 is elongated covers the upper and lower portions of the first elements 14 and 13, the left and right visibility characteristics can be strengthened.

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 viewed from the right.

Referring to FIGS. 13( b ) and 13 ( c ), the center blanks of the first elements 14 and 13 are skewed to the left, and the sizes of the red sub-element 14 and the blue sub-element 13 are asymmetrical. And, the first element 23 is also biased to the left thereon. This embodiment has an effect of asymmetricalizing the left and right viewing characteristics.

Fig. 13(d) shows the addition of a hexagonal ring 53 to the center of the embodiment of Fig. 4 . Then, when the viewing angle is changed from the top of the anti-counterfeiting sheet 50, the sub-elements 13, 14, 55 and the hexagonal ring 53 are continuously viewed, giving an effect as if the first pattern is moving.

As described above, when the first and second elements are adjusted to include sub-elements of different colors or different shapes, a wide variety of viewing characteristics can be achieved, and a wide variety of variations and combinations are possible without being limited to the above embodiment.

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 elements 23 described in FIG. 3 are applied to actual patterns will be described.

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

Referring to FIG. 14A , a plurality of second elements 23 may constitute a second pattern 22 together with a blank space 26 . The second elements 23 are regularly arranged in a regular hexagonal honeycomb shape to have the advantage of arranging many patterns per unit area, but the present invention is not limited thereto.

The reason why the plurality of second elements 23 are regularly arranged in a honeycomb shape together with the second blank 26 is that the first element 23 is formed through the blank 26 between the second elements 23 arranged in a honeycomb pattern. In order for the elements 13 , 14 to be visible from a specific viewing angle 31 , 33 , 35 , 37 . That is, the viewing characteristics of the first pattern 12 are changed according to a specific viewing angle, direction, and distance through the second blank 26 .

Referring to FIG. 14(b) , the plurality of first elements 13 and 14 may form an S-shape as the first pattern 12 together with the blank 16 . The first element 13 is regularly arranged in a regular hexagonal honeycomb shape like the second element 23 so as not to be seen by being hidden (shielded) in whole or in part by the second element 23 . Looking at the enlarged part 53 of (a) and (b), the first element (13, 14) and the second element ( 23) exists in pairs up and down as in FIG. 3 . That is, it is preferable that the portion (53) is formed vertically on the same position (coordinate) on the security paper sheet.

When the first and second elements are arranged as described above, as described in FIG. 3, when the anti-counterfeiting sheet 30 is viewed from above, the first pattern 12 and the first element 13 are hardly exposed, At specific viewing angles 31 , 33 , 35 , and 37 , the first pattern 12 and the first elements 13 and 14 are partially exposed between the blanks 26 of the second substrate 21 . In addition, since the first elements 13 and 14 are composed of different colors, they appear to have different colors in a specific direction.

Then, the viewing characteristics according to the distance will be described. While visually recognizing the above-described specific direction and specific viewing angle, the distance from the first pattern 12 is gradually increased. Then, the first elements (13, 14), which are strangely separated from each other, are gathered as one. This is due to the optical illusion of the human eye depending on the distance.

As the distance from the user's eyes to the first pattern (12, S-shape) increases, as the distance approaches a specific distance, the separated first elements appear to be gradually gathered into one. That is, the S-shape is not recognized when it is close, but as it approaches a certain distance, the S-shape begins to be recognized, and when it approaches a certain distance, the first elements that were separated appear attached to each other and the S-shape becomes clearer. In addition, depending on the distance between the pattern (the 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, the number of patterns, etc., there may be differences in the sharpness of the image depending on the distance. can

If the size of the blank space 16 is increased, the effect of appearing apart or a certain distance from which the first elements are attached may be maintained. On the other hand, if the size of the blank 16 is reduced, a specific distance through which the first elements are attached becomes smaller.

In addition, if a portion of the first pattern 12 is designed and configured so that there is no blank space 16 , the color conversion effect may be further diversified.

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

Referring to FIG. 15( a ), as the anti-counterfeiting sheet of FIG. 14 is vertically visually recognized, the first pattern 12 (S-shape) is almost or completely hidden so that it is not visually recognized.

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

Referring to FIG. 15( c ), it shows that the anti-counterfeiting sheet according to the present invention is recognized in the right direction, at a specific angle, and at a specific distance, and instead of the first pattern of red (12, S-shape), the first pattern of blue ( 12, S) is recognized.

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

That is, if the sub-elements of the first elements 13 and 14 are given diversity in color and shape, different patterns can be seen depending on the viewing direction.

In addition, the same effect can be achieved by applying the above-described embodiment to the third element 57 of the anti-counterfeiting sheet according to the embodiment of FIGS. 6, 7 (b) and 8 (b). That is, through the third pattern (not shown) composed of the third element 37 and the blank space, the above-described effect can be seen in both directions of the anti-counterfeiting sheet.

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

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

16 and 17 are views showing the recognition of the anti-counterfeiting sheet at a specific viewing angle, direction and distance according to another embodiment of the present invention.

Referring to FIG. 16 , compared with FIG. 14 , the difference is that the second star-shaped second pattern 51 is illustrated on the second substrate 21 . That is, the second patterns 22 and 51 may be printed using a plurality of inks having different reflectivities.

In the second pattern 51 of this embodiment, a pearl function ink having a high reflectance was applied. That is, by using general ink for the non-star portion (a) and applying ink with high reflectivity to the star-shaped portion (b), the stars are exposed according to the viewing angle.

Referring to FIG. 17 , in (a) it can be seen that the second pattern 51 (star shape) appears at a specific viewing angle. That is, the star shape 51 to which the ink having high reflectivity is applied is perceived as being close to white.

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

As can be seen from this embodiment, the anti-counterfeiting sheet according to the present invention has the characteristics that the sharpness of the pattern changes, the color changes, the pattern appears, or the pattern change occurs according to a specific viewing angle, direction and distance. can

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

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

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 blank 26 in the above-described manner. And, as the first pattern 12, a heart shape is used. The heart shape used here is a kind of fictional image that has nothing to do with the QR code.

Then, when the anti-counterfeiting sheet is visually recognized at a predetermined distance from above the second pattern 22, the QR code is visually recognized as shown in FIG. 18 (a). That is, due to the optical illusion according to the distance described in FIG. 14 , the second elements 23 separated from each other are gathered 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 specific viewing angle (31), the second element (13) is visually recognized. That is, a heart shape is seen as shown in FIG. 18(b).

Therefore, the above embodiment can be used to prevent counterfeiting or to check the authenticity by the presence of a heart shape.

In addition, when the anti-counterfeiting sheet is copied or scanned, the normal QR code shape is not copied because the second elements 23 separated from each other are copied as they are. Accordingly, a copy protection effect can be achieved.

That is, when the side of the anti-counterfeiting sheet is copied, the QR code is copied to the plurality of second elements 23 and the second blank 26 separated from each other. will be seen

Of course, the QR code taken on the smartphone at this time looks a little blurry, but there is no big problem in recognizing it.

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 , this 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 . Thus, when the anti-counterfeiting sheet 20 is viewed from directly above the second pattern, the anti-counterfeiting sheet 20 is used so that a portion 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 blank 16 in the above-described manner. At this time, the square-shaped QR code is transformed into a trapezoidal shape as shown in Fig. 19(a) to make a design.

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

Then, when the anti-counterfeiting sheet 20 is recognized at a certain distance from directly above the second pattern, the first elements 13 that were separated due to the optical illusion according to the distance described in FIG. The QR code shape of "trapezoidal shape" is visually recognized (FIG. 19(a)). At this time, depending on the viewing distance, the QR code may appear somewhat blurry.

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, and a normal square-shaped QR code is visible as shown in FIG. 19(b) due to the near and far characteristics. do.

That is, in the QR code according to the present embodiment, the normal shape of the QR code is recognized at a specific viewing angle and distance, otherwise a deformed (distorted) QR code is recognized or a blurry QR code is recognized.

Therefore, when shooting with a smartphone or the like at a specific viewing angle and distance, the QR code can be recognized.

In addition, when the anti-counterfeiting sheet according to the present embodiment is copied or scanned, the second elements 23 are copied together, and the QR code is copied with numerous dots embedded therein. Therefore, the copy protection effect can be seen.

Therefore, the conventional QR code for security has a limitation in scanning or copying. If this technology is used, when scanning or copying, arbitrary patterns and shapes are exposed together, so that scanning or copying is not accurate, so that the QR code function is lost or will fall In other words, (1) authenticity can be checked through random pattern checking, and (2) QR code does not work normally, two effects can be seen at the same time.

Although the anti-counterfeiting sheet according to the present invention is applied to the QR code in FIGS. 18 and 19, the present invention is not limited thereto, and can be applied to various marks such as bar codes, emblems or logos.

However, in the embodiment of Fig. 19, in order to make the mark visually recognized as a normal mark at a specific viewing angle and distance, it is preferable to design the mark shape in a distorted shape.

20 is a view showing the application of the anti-counterfeiting sheet according to the present invention to a credit card, and is an embodiment in which security is further improved by applying the embodiments of FIGS. 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 a credit card is used for the second element 23 . A pattern is formed including the second blank 26 , and red and blue sub-elements can be used for the first elements 14 and 13 .

Then, no latent image effect or color conversion effect appears on the back of the card, but on the front of the card, the first elements 14 and 13 are interposed between the second blanks 26 through the transparent substrate 21 at a specific viewing angle, direction and distance. will appear according to

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

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

In addition, it may be configured in a form separated into a partially white core layer and a transparent core layer in one or more layers among the layers consisting 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 various effects, and in this embodiment, the example of a credit card is given, but it is not limited thereto, and a polymer banknote or a transparent plastic bottle is not limited thereto. It can be variously applied to the security label of

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

Referring to FIG. 21 , compared with FIG. 14(b) , one or more identification patterns 65 are additionally designed and printed on the first substrate 11 . In addition, it shows that the anti-counterfeiting sheet is viewed or photographed at a specific viewing angle, direction and distance with a user terminal (smartphone, etc.). 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) sees it overlaid on the area where the main pattern (first pattern 12) is formed or in a predetermined area around the periphery rather than where the main pattern is formed. On the other hand, it is possible to form additional patterns of various forms (figures, dots, lines, etc.) that can be identified through an identification device (smartphone 67, etc.). In addition, the identification pattern 65 may be composed of a predetermined specific color 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 necessary but does not have a certain functionality.

Also, the identification pattern may be designed to include a plurality of first elements 13 and 14 and a first blank 16 , similarly to the first pattern 12 .

The identification pattern 65 may be used as recognition coordinates recognized at a predetermined viewing angle with the identification device 67 or may be used for additional verification of the authenticity of the object. Authenticity can be verified.

Although the example of a smartphone is given as the identification device 67 in this embodiment, it is not necessarily limited to this. It may be a user terminal 67 of various types, including a camera and a processor capable of driving an app or application. For example, it may be a tablet or a laptop computer, or a PC to which the camera is connected.

Referring to FIG. 22 , it is a flowchart exemplarily illustrating a method for recognizing the authenticity of the anti-counterfeiting sheet by a user terminal according to another embodiment of the present invention (S70).

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

In step 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, by detecting the identification pattern 65, it is possible to recognize whether the identification pattern exists or whether it is authentic or not by comparing it with the previously stored identification pattern.

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

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

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

As described above, the present invention forms the first and second patterns on both sides of the transparent substrate with a plurality of elements and a blank space, and makes it visible through the blank, so that each of the elements 13, 14, 23 and the blanks 16, 26 Based on various combinations of size, regularity, number, brightness, saturation, hue of each of the elements 13, 14, 23, and thickness, density, brightness, saturation, and hue of the second substrate 21, the viewing angle, It is possible to provide an anti-counterfeiting sheet and a method for manufacturing the same, in which the sharpness of a pattern changes, a color changes, a pattern appears, or a pattern change occurs due to an optical illusion according to a direction, a location, and a distance.

According to the present invention, high anti-counterfeiting effects such as visual angle (color conversion), latent images, and transparent windows can be achieved without using expensive special inks, complicated printing processes, or using special materials. That is, there is an advantage that inexpensive materials such as general ink can be used and can be manufactured in a single process using an existing process such as lithographic printing.

In particular, when a fluorescent ink or the like is used for the first pattern 12 , a fluorescent color conversion and a fluorescent latent image effect can be produced according to the viewing angle, so that a strong anti-counterfeiting effect can be achieved 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 colors seen from both sides to be the same or different.

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, since the above effects can be applied at the same time, security can be further maximized.

Therefore, it is easy to use for a low-cost product group or a small quantity multi-product product group. Applicable products may include security products such as cards, polymer banknotes, security labels, stickers, recuts, copy-obstructing 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). That is, there is no need for a specific temperature or a special light source, and authenticity can be easily determined by shooting at a certain viewing angle with a camera-equipped smartphone, a microscope, or a magnifying glass.

As described above, the present invention has been described with reference to the embodiment shown in the drawings, but this is merely an example, and various modifications and equivalent other embodiments are possible therefrom by those skilled in the art. will understand Accordingly, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

10, 20, 30, 40, 50: Anti-counterfeiting sheet
11: Article 1
12: first pattern
13, 14: first element or sub-element
16: first margin
21: second entry
22: second pattern
23: second element
26: 2nd margin
27: Embo
31, 33, 35, 37, 41, 43, 45, 47: viewing angle
53, 55: sub-element
57: third element
59: adhesive layer
61, 63: protective layer
65: identification pattern
67: user terminal
71: opaque area
73: transparent area
75: Lee Hyungji

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 including a plurality of first elements and a first blank,
The second pattern is designed including a plurality of second elements and a second blank,
The pattern width of the first element is formed to be larger than the pattern width of the second element, so that when viewed from directly above the second element, a part of the first element is visible,
The first pattern is recognized at a predetermined viewing angle through the second blank,
The first element includes at least two or more sub-elements formed of different colors or different shapes or different inks,
The different colors or shapes or inks are visually recognized according to the angle, direction, and distance at which the first element is visually recognized through the second blank,
At least one of the first element and the second element is formed in a polygonal shape,
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 visually recognized through the second blank at the predetermined viewing angle.
According to claim 1,
The second pattern is an anti-counterfeiting sheet, characterized in that it is visually recognized at a predetermined viewing angle through the first blank.
delete According to claim 1,
The anti-counterfeiting sheet, characterized in that the plurality of first or second elements are regularly arranged.
According to claim 1,
According to the angle, direction or distance at which the first pattern is recognized through the second blank, the sharpness of the first pattern changes, the color changes, the pattern is expressed, or the pattern change occurs. Anti-counterfeiting sheet.
According to claim 1,
The anti-counterfeiting sheet, characterized in that the transparent substrate is composed of one or more layers having a predetermined light transmittance.
delete According to claim 1,
The plurality of second elements is an anti-counterfeiting sheet, characterized in that it is formed using a plurality of inks having different reflectivities.
According to claim 1,
The first pattern or the second pattern is an anti-counterfeiting sheet, characterized in that formed by a combination of any one or more of gravure printing, screen printing, flexographic printing, offset printing, inkjet, laser printing and deposition.
According to claim 1,
The plurality of first elements is an anti-counterfeiting sheet, characterized in that when viewed from a specific distance through the second blank, it is gathered by an optical illusion phenomenon.
According to claim 1,
The anti-counterfeiting sheet, characterized in that the embossing is formed on the transparent substrate.
According to claim 1,
Anti-counterfeiting sheet, characterized in that when the first element is viewed from above the first element, the color of the first element is visually recognized as a different color due to an optical illusion caused by interference with the second element.
According to claim 1,
A predetermined mark is designed with the first pattern comprising a plurality of first elements and a first blank,
The anti-counterfeiting sheet, characterized in that the shape of the mark is designed in a distorted shape so that the predetermined mark is recognized as a normal mark at a specific viewing angle and distance.
14. The method of claim 13,
The predetermined mark is an anti-counterfeiting sheet, characterized in that the QR code or barcode or logo.
According to claim 1,
Anti-counterfeiting sheet, characterized in that the visibility of the first pattern visually recognized through the second blank as the thickness of the transparent substrate increases or the density decreases.
According to claim 1,
The first pattern or the second pattern is an anti-counterfeiting sheet, characterized in that formed by double-sided printing or double-sided deposition.
According to claim 1,
Applying a 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,
By allowing the first element to be viewed at a predetermined viewing angle through the second blank,
Anti-counterfeiting sheet, characterized in that the fluorescent latent characteristics appear.
According to claim 1,
The first element includes a plurality of sub-elements formed of fluorescent inks having different physical or chemical properties or having different colors,
By allowing the fluorescent inks of different characteristics or different colors to be visually recognized according to the direction in which the first element is visually recognized through the second blank,
An anti-counterfeiting sheet, characterized in that it exhibits fluorescent color conversion characteristics.
app (APP; application); and
In the method of recognizing the authenticity of the anti-counterfeiting sheet according to claim 1 by a user device having a camera or a lens,
The first pattern is designed including a predetermined identification pattern,
the app,
receiving an image of the anti-counterfeiting sheet through the camera or lens; and
recognizing the authenticity by detecting the identification pattern in the received image;
including,
The camera or lens receives the image from the image at a specific viewing angle, direction or distance,
The user device is a method for recognizing the authenticity of the anti-counterfeiting sheet, characterized in that the information on the identification pattern is included in advance.
20. The method of claim 19,
The identification pattern is a method for recognizing the authenticity of the anti-counterfeiting sheet, characterized in that it is designed including a plurality of first elements and a first blank.

Images