Security tag

Abstract

To prevent counterfeiting by a simple structure.SOLUTION: A product tag 1 has a hologram sheet 30 on which anti-counterfeit processing regarding the appearance has been performed, between a front surface sheet 10 and a back surface sheet 20. The front surface sheet 10 has a vision hole 11 for exposing the hologram sheet 30 and the back surface sheet 20 has a vision hole 21 for exposing the hologram sheet 30. The vision hole 11 and the vision hole 21 have a region overlapping the vision holes in a thickness direction at least partially.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a security tag having an anti-counterfeiting function. [Background technology]

[0002] Generally, products sold in stores and the like are sold with tags attached that indicate the product name, price, etc. Some such tags indicate the origin of the product, and in the case of branded products and the like, the attachment of a so-called brand tag proves that the product is not a counterfeit. However, particularly in the case of branded products, tags may be counterfeited in order to sell counterfeit products.

[0003] Therefore, a technology is known in which a hologram seal is attached to a tag to make the tag more difficult to counterfeit. However, since the hologram seal can be easily peeled off from the tag, it is possible to easily counterfeit a tag with a genuine hologram seal attached by peeling the hologram seal off of a genuine tag and reattaching it to a counterfeit tag.

[0004] Patent document 1 discloses a system in which information to certify the origin and quality of a product is recorded in the memory of a product tag, and the information is read from the product tag when the product is sold, thereby confirming whether the product to which the product tag is attached is genuine or fake.

[0005] Furthermore, Patent Document 2 discloses an RFID-embedded security document that combines an RFID with an optical variable device (OVD), which is composed of a first substrate having one or more openings, and an optical functional layer and an IC chip laminated between the first substrate and the second substrate, and prevents unauthorized replacement of the RFID with OVD attached to the security document. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2000-11114 A [Patent Document 2] JP 2011-150409 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the system disclosed in Patent Document 1, not only is it necessary to pre-record information for certifying the origin and quality of a product in the memory of the product tag, but it is also necessary to read the information from the product tag when the product is sold. This requires the construction of a large-scale system. In particular, a dedicated reading device is required to read information from the product tag when the product is sold, and some small stores do not have such reading devices due to cost and other reasons.

[0008] In addition, in the security document disclosed in Patent Document 2, the OVD-attached RFID is only intended to prevent replacement of RFIDs affixed to security documents such as passports, securities, certificates, guarantees, cards, etc., and there is a problem that the tamper prevention does not work for tags that stand on their own, such as price tags. Furthermore, there is a problem that the tag can be easily counterfeited by attaching or overlapping a hologram counterfeit sticker of the same size as the opening, and the problem has not been solved from the viewpoint of preventing counterfeiting of the tag itself.

[0009] The present invention has been made in consideration of the problems associated with the conventional techniques as described above, and has an object to provide a security tag that has a simple configuration and can prevent counterfeiting. [Means for solving the problem]

[0010] In order to achieve the above object, the present invention provides A security tag having a security sheet having an appearance-proof processing applied thereto between a first covering layer and a second covering layer opposed to the first covering layer, the first covering layer has a first opening through which the security sheet is exposed, the second covering layer has a second opening through which the security sheet is exposed, The first opening and the second opening at least partially overlap each other in the thickness direction.

[0011] In the present invention configured as described above, the security sheet with the anti-counterfeiting treatment on the appearance is exposed and visible through at least one of the first opening of the first covering layer and the second opening of the second covering layer, proving that the article to which the tag is attached is not a fake. In this way, the security sheet is visible through the opening, proving that the article to which the tag is attached is not a fake, thereby preventing counterfeiting with a simple configuration.

[0012] The counterfeit prevention processing is composed of an optical functional layer having a fine line pattern that can obtain a transmitted image, The transmission image may be obtained through the first opening or the second opening in a region where the first opening and the second opening overlap in the thickness direction.

[0013] In such a configuration, a transmitted image obtained through the first opening or the second opening in the region where the first opening and the second opening overlap in the thickness direction proves that the item or the like to which the tag is attached is not a counterfeit.

[0014] The first opening and the second opening have a region where they do not overlap in a thickness direction, The anti-counterfeiting treatment is composed of an optical functional layer having a fine line pattern that can obtain a reflected image, The reflected image may be obtained through the first opening or the second opening in a region where the first opening and the second opening do not overlap in the thickness direction.

[0015] In such a configuration, the reflected image obtained through the first opening or the second opening in the area where the first opening and the second opening do not overlap in the thickness direction proves that the item or the like to which the tag is attached is not a counterfeit.

[0016] The first opening and the second opening have a region where they do not overlap in a thickness direction, The counterfeit prevention processing is composed of an optical functional layer having a fine line pattern from which a transmitted image and a reflected image can be obtained, The configuration may be such that in a region where the first opening and the second opening overlap in the thickness direction, the transmitted image is obtained through the first opening or the second opening, and in a region where the first opening and the second opening do not overlap in the thickness direction, the reflected image is obtained through the first opening or the second opening.

[0017] In such a configuration, it is possible to prove that an article etc. to which the tag is attached is not a counterfeit by a transmitted image obtained through the first opening or the second opening in a region where the first opening and the second opening overlap in the thickness direction, and a reflected image obtained through the first opening or the second opening in a region where the first opening and the second opening do not overlap in the thickness direction.

[0018] The first opening and the second opening may be configured to differ in at least one of their shapes and sizes.

[0019] In such a configuration, it is possible to form an area where the first opening and the second opening overlap in the thickness direction and an area where they do not overlap, without shifting the relative positions of the first opening and the second opening.

[0020] Further, an RFID tag for transmitting and receiving data to and from an external read / write device in a non-contact manner may be provided between the first cover layer and the second cover layer.

[0021] In such a configuration, it is possible to prove that the article to which the tag is attached is not a counterfeit by simply reading the data written in the RFID tag.

[0022] The optical functional layer is configured to be breakable or discolorable, A break or discoloration of the optical function layer may be visually recognized through at least one of the first opening and the second opening.

[0023] In such a configuration, the optical functional layer can be broken or discolored at the time when an article or the like to which the tag is attached is officially sold, and the tag can be used as proof of purchase of the article or the like. Effect of the Invention

[0024] According to the present invention, since the security sheet can be viewed through the opening, it is possible to prove that the article to which the tag is attached is not a counterfeit, thereby making it possible to prevent counterfeiting with a simple structure.

[0025] In addition, when the anti-counterfeiting processing is composed of an optical functional layer consisting of a fine line pattern from which a transmitted image can be obtained, and in a region where the first opening and the second opening overlap in the thickness direction, a transmitted image can be obtained through the first opening or the second opening, and it can be proven that an item to which the tag is attached is not a fake by the transmitted image obtained through the first opening or the second opening in the region where the first opening and the second opening overlap in the thickness direction.

[0026] In addition, in a tag having an area where the first opening and the second opening do not overlap in the thickness direction, the anti-counterfeiting processing is composed of an optical functional layer consisting of a fine line pattern from which a reflected image can be obtained, and a reflected image can be obtained through the first opening or the second opening in the area where the first opening and the second opening do not overlap in the thickness direction, it is possible to prove that an item, etc. to which the tag is attached is not a fake by the reflected image obtained through the first opening or the second opening in the area where the first opening and the second opening do not overlap in the thickness direction.

[0027] In addition, in a tag having an area where the first opening and the second opening do not overlap in the thickness direction, the anti-counterfeiting processing is composed of an optical functional layer consisting of a fine line pattern from which a transmitted image and a reflected image can be obtained, and in the area where the first opening and the second opening overlap in the thickness direction, a transmitted image can be obtained through the first opening or the second opening, and in the area where the first opening and the second opening do not overlap in the thickness direction, a reflected image can be obtained through the first opening or the second opening, it can be proven that an article to which the tag is attached is not a counterfeit by the transmitted image obtained through the first opening or the second opening in the area where the first opening and the second opening overlap in the thickness direction and the reflected image obtained through the first opening or the second opening in the area where the first opening and the second opening do not overlap in the thickness direction.

[0028] Furthermore, when the first opening and the second opening are different in at least one of their shape and size, it is possible to form an area where the first opening and the second opening overlap in the thickness direction and an area where they do not overlap, without shifting the relative positions of the first opening and the second opening.

[0029] In addition, in the case of a tag having an RFID tag between the first and second coating layers that transmits and receives data without contact with an external read / write device, it is possible to prove that the item to which the tag is attached is not a counterfeit by reading the data written in the RFID tag.

[0030] In addition, in a case where the optical functional layer is configured to be capable of being broken or discolored, and the breakage or discoloration of the optical functional layer is configured to be visible through at least one of the first opening and the second opening, the optical functional layer can be broken or discolored at the time an item or the like to which the tag is attached is sold legitimately, and can be used as proof of purchase of the item or the like. [Brief description of the drawings]

[0031] [Figure 1]1A and 1B are diagrams showing a first embodiment of a security tag of the present invention, in which (a) is a front view, (b) is a cross-sectional view taken along line AA in (a), (c) is a cross-sectional view taken along line BB in (a), and (d) is a diagram showing the configuration of an RFID tag. [Diagram 2] 2 is a diagram showing a stacked state of the product tag shown in FIG. 1. [Diagram 3] 3 is a diagram for explaining how to use the product tag shown in FIGS. 1 and 2. FIG. [Figure 4] 3 is a diagram for explaining the operation when a transmission type hologram or a reflection type hologram is used as the hologram sheet shown in FIG. 1 and FIG. 2. [Diagram 5] 3 is a diagram for explaining an area in which a transmitted image can be obtained and an area in which a reflected image can be obtained on the product tag shown in FIGS. 1 and 2. FIG. [Figure 6] 3 is a diagram for explaining the action produced by the product tag shown in FIG. 1 and FIG. 2. [Figure 7] 5A and 5B are diagrams showing a second embodiment of the security tag of the present invention, in which (a) is a front view and (b) is an E-E cross-sectional view shown in (a). [Figure 8] 8 is a diagram showing a stacked state of the product tag shown in FIG. 7. FIG. [Figure 9] 9 is a diagram for explaining an area in which a transmitted image can be obtained and an area in which a reflected image can be obtained on the product tag shown in FIGS. 7 and 8. FIG. [Figure 10] 9 is a diagram for explaining the action produced by the product tag shown in FIG. 7 and FIG. 8. [Figure 11] 5A to 5C are diagrams showing a third embodiment of the security tag of the present invention, where (a) is a front view, (b) is an HH sectional view shown in (a), and (c) is a back view. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0033] First Embodiment (Tag configuration) Fig. 1 shows a first embodiment of the security tag of the present invention, where (a) is a front view, (b) is an AA cross-sectional view shown in (a), (c) is a BB cross-sectional view shown in (a), and (d) is a diagram showing the configuration of an RFID tag 50. Fig. 2 is a diagram showing the layered state of the product tag 1 shown in Fig. 1.

[0034] 1 and 2, this embodiment is a product tag 1 in which a hologram sheet 30 and an RFID tag 50 are sandwiched between opposing top sheet 10 and back sheet 20. That is, the product tag 1 in this embodiment is configured by laminating the hologram sheet 30 and the RFID tag 50 between the top sheet 10 and the back sheet 20 with the RFID tag 50 facing the top sheet 10.

[0035] The top sheet 10 is an example of the first covering layer in the present invention, and is made of, for example, cardboard. The top sheet 10 has a product information display area 12 and a price information display area 13. The front side of the product information display area 12 displays information about the attached product. The front side of the price information display area 13 displays the price of the attached product, a barcode for managing the product, and the like.

[0036] The top sheet 10 has perforations 14 formed along the boundary between the product information display area 12 and the price information display area 13. In addition, the product information display area 12 has an attachment hole 15 formed on the upper end side of the product tag 1 for passing a plastic wire attached to the attached product. In addition, a viewing hole 11 is formed in the price information display area 13. The viewing hole 11 is an example of a first opening in the present invention, and has a circular shape. By penetrating the front and back of the top sheet 10, the hologram sheet 30 can be viewed through the viewing hole 11.

[0037] An adhesive layer 40a is laminated on the surface of the surface sheet 10 where the RFID tag 50 and the hologram sheet 30 are laminated by applying an adhesive that is difficult to peel off after adhesion. Here, "difficult to peel off after adhesion" means that the surface sheet 10 and the hologram sheet 30 are strongly bonded to such an extent that when they are peeled off by hand after being bonded, the surface sheet 10 itself is torn or peeled off in the thickness direction. Also, if the hologram sheet 30 is fragile, the hologram sheet 30 itself is strongly bonded to such an extent that it is destroyed.

[0038] The back sheet 20 is an example of the second covering layer in the present invention, and is made of, for example, cardboard, and has the same outer shape as the top sheet 10. In addition, a viewing hole 21 is formed in the back sheet 20. The viewing hole 21 is an example of the second opening in the present invention, and penetrates the front and back of the back sheet 20, so that the hologram sheet 30 can be viewed through the viewing hole 21. The viewing hole 21 has the same circular shape as the viewing hole 11 of the top sheet 10, and is formed so that a part of it overlaps with the viewing hole 11 of the top sheet 10. In addition, a mounting hole (not shown) of the same shape as the mounting hole 15 is formed in the area facing the mounting hole 15 of the top sheet 10, and a perforation (not shown) is formed in the area facing the perforation 14 of the top sheet 10.

[0039] An adhesive layer 40b is laminated on the surface of the back sheet 20 on which the RFID tag 50 and the hologram sheet 30 are laminated by applying an adhesive that is difficult to peel off after adhesion.

[0040] The hologram sheet 30 is an example of a security sheet in the present invention. The hologram sheet 30 is made of, for example, a transparent film, and has the same outer shape as the top sheet 10 and the back sheet 20. As the hologram sheet 30, a transmission type hologram in which a transmission image can be viewed three-dimensionally so that the state changes depending on the viewing angle, or a reflection type hologram in which a reflected image that can be viewed changes depending on the viewing angle, etc. can be used. Therefore, the hologram sheet 30 is subjected to an anti-counterfeiting process on the appearance so that it cannot be copied using a copying machine. In addition, the hologram sheet 30 has perforations (not shown) formed in an area facing the perforations 14 of the top sheet 10.

[0041] The RFID tag 50 is configured by forming an antenna 52 on one surface of a base material 53 and mounting an IC chip 51 thereon.

[0042] The base substrate 53 is made of a non-conductive material such as a film, and has an outer shape smaller than the front sheet 10, the back sheet 20, and the hologram sheet 30.

[0043] The antenna 52 is formed such that two isosceles triangular conductor parts 52a, 52b are arranged with a gap between them on one surface of the base material 53. Note that the shape of the antenna 52 is not limited to this, and various shapes are possible, such as two strip-shaped conductors arranged in a straight line with a gap between them.

[0044] The IC chip 51 is provided with two antenna terminals (not shown), and the surface on which the antenna terminals are provided serves as a mounting surface, and is mounted on the surface of the base substrate 53 on which the antenna 52 is formed, and is fixed with anisotropic conductive paste (not shown). The two antenna terminals of the IC chip 51 are connected to two conductor parts 52a and 52b, respectively, and the antenna terminals and the antenna 52 are electrically connected by the anisotropic conductive paste. In this case, the apex of an isosceles triangle formed by the two conductor parts 52a and 52b serves as a power supply point, and the IC chip 51 is connected to this power supply point.

[0045] The RFID tag 50 configured as described above is laminated on the surface of the hologram sheet 30 on the surface sheet 10 side in an area not facing the viewing holes 11, 21. In the RFID tag 50, the IC chip 51 operates using power obtained by non-contact communication via the antenna 52 from an external read / write device, and transmits a unique ID, which is data pre-encoded in the IC chip 51, in a non-contact manner via the antenna 52. In this way, the IC chip 51 transmits and receives data in a non-contact manner with the external read / write device via the antenna 52.

[0046] The hologram sheet 30 and the RFID tag 50 are sandwiched between the top sheet 10 and the back sheet 20, and are adhered to the top sheet 10 and the back sheet 20 by adhesive layers 40a and 40b, respectively. As a result, the top sheet 10 and the back sheet 20 are adhered to each other via the hologram sheet 30 and the RFID tag 50.

[0047] (How to use tags) A method of using the product tag 1 configured as above will be described below.

[0048] FIG. 3 is a diagram for explaining how to use the product tag 1 shown in FIGS.

[0049] The product tag 1 shown in Figures 1 and 2 is attached to a product 2 and used as shown in Figure 3. In this case, the product tag 1 is attached to the product 2 by passing the plastic wire 3 attached to the product 2 through the attachment hole 15. In this state, the product 2 is sold in a store or the like.

[0050] As described above, the product tag 1 displays information about the product 2 on the surface of the product information display area 12, and also displays the price of the product 2 on the surface of the price information display area 13. Therefore, consumers can learn detailed information about the origin and price of the product 2 from the information displayed on the product tag 1. Furthermore, particularly when the product 2 is a branded product, the product tag 1 also functions as a so-called brand tag. In other words, the product tag 1 proves that the product 2 is not a counterfeit.

[0051] When the perforation 14 is broken after the product 2 with the product tag 1 attached is sold, the price information display area 13 of the top sheet 10 and the areas of the back sheet 20 and hologram sheet 30 facing the price information display area 13 are removed.

[0052] (Action by tags) The following describes the actions that are produced by the above-described product tag 1.

[0053] FIG. 4 is a diagram for explaining the operation when a transmission type hologram or a reflection type hologram is used as the hologram sheet 30 shown in FIG. 1 and FIG.

[0054] 4(a), when a hologram sheet 30a made of a transmission type hologram is used as the hologram sheet 30 shown in Fig. 1 and Fig. 2, incident light i1 incident on one side of the hologram sheet 30a is refracted by the hologram sheet 30a and is emitted as diffracted light d1 from the other side of the hologram sheet 30a. Due to the refraction of light caused by this hologram sheet 30a, a transmission image can be viewed three-dimensionally, with the state changing depending on the viewing angle.

[0055] 4(b), when a hologram sheet 30b made of a reflection type hologram is used as the hologram sheet 30 shown in Fig. 1 and Fig. 2, incident light i2 incident on one side of the hologram sheet 30b is reflected as diffracted light d2 by the hologram sheet 30b. Due to the reflection of light caused by this hologram sheet 30b, the reflected image that can be viewed changes depending on the viewing angle.

[0056] FIG. 5 is a diagram for explaining an area in which a transmitted image can be obtained and an area in which a reflected image can be obtained in the product tag 1 shown in FIGS.

[0057] As described above, the viewing hole 11 formed in the top sheet 10 and the viewing hole 21 formed in the back sheet 20 partially overlap in the thickness direction of the product tag 1. Therefore, when a hologram sheet 30 having the optical functions of both a transmission type hologram and a reflection type hologram is used, the area where the viewing hole 11 and the viewing hole 21 overlap becomes the transmission image acquisition area 31, and the area where the viewing hole 11 and the viewing hole 21 do not overlap becomes the reflection image acquisition area 32, as shown in Fig. 5.

[0058] 4(a), in the transmission image acquisition region 31, incident light incident from one surface of the hologram sheet 30 is refracted by the hologram sheet 30 and exits from the other surface of the hologram sheet 30. As a result, in the transmission image acquisition region 31, the transmission image can be viewed three-dimensionally through the viewing holes 11 and 21.

[0059] 4(b), incident light incident from one surface of the hologram sheet 30 is reflected by the hologram sheet 30. As a result, in the reflected image acquisition region 32, a reflected image that changes depending on the viewing angle can be viewed through the viewing holes 11 and 21.

[0060] FIG. 6 is a diagram for explaining the action produced by the product tag 1 shown in FIGS.

[0061] In the product tag 1 shown in Figures 1 and 2, a hologram sheet 30 is sandwiched between a top sheet 10 and a back sheet 20. The hologram sheet 30 can be seen from the outside through a viewing hole 11 formed in the top sheet 10 and a viewing hole 21 formed in the back sheet 20. The hologram sheet 30 can be one that allows an image to be viewed three-dimensionally so that its state changes depending on the viewing angle, or one that changes the visible color depending on the viewing angle.

[0062] Therefore, as shown in Fig. 6, the angle of the stereoscopic image visible through the viewing hole 11 and the color visible through the viewing hole 11 change when the product tag 1 is viewed from viewing direction C and when the product tag 1 is viewed from viewing direction D. This makes it possible to prove that the product 2 to which the product tag 1 is attached is not a counterfeit. In this case, the configuration may be such that a logo mark indicating the brand of the product 2 can be viewed stereoscopically when the hologram sheet 30 is viewed through the viewing hole 11 formed in the top sheet 10 or the viewing hole 21 formed in the back sheet 20.

[0063] The hologram sheet 30 can also be seen through the viewing hole 21 in the back sheet 20. Therefore, it is possible to prove that the product 2 to which the product tag 1 is attached is not a counterfeit by changing the angle of the three-dimensional image visible through the viewing hole 21 or the color visible through the viewing hole 21.

[0064] 5, in the transmitted image acquisition area 31 where the viewing holes 11 and 21 overlap, a transmitted image is visible through the viewing holes 11 and 21, while in the reflected image acquisition area 32 where the viewing holes 11 and 21 do not overlap, a reflected image is visible through the viewing holes 11 and 21. In this way, the transmitted image is visible in some areas through the viewing holes 11 and 21, and the reflected image is visible in other areas, so that it can be proven that the product 2 to which the product tag 1 is attached is not a counterfeit.

[0065] Here, the hologram sheet 30 is sandwiched between the top sheet 10 and the back sheet 20, and the top sheet 10 and the back sheet 20 are adhered via the hologram sheet 30 in such a way that they are difficult to peel off. Therefore, the hologram sheet 30 cannot be easily removed, which prevents counterfeiting of the product tag 1. Furthermore, if fine cuts or the like are formed in the hologram sheet 30, the hologram sheet 30 will be destroyed when the hologram sheet 30 is forcibly peeled off from the top sheet 10 or the back sheet 20 in order to remove the hologram sheet 30, which also prevents counterfeiting of the product tag 1.

[0066] Thus, in this embodiment, even though the hologram sheet 30 is sandwiched between the top sheet 10 and the back sheet 20, it is visible from the outside through the visibility hole 11 formed in the top sheet 10 and the visibility hole 21 formed in the back sheet 20. This makes it possible to make the hologram sheet 30 visible from the outside, but unable to easily remove it, thus preventing counterfeiting with a simple configuration.

[0067] Furthermore, as described above, if hologram sheet 30 has a configuration that changes color when irradiated with laser light, hologram sheet 30 can be changed in color at the time when an item to which product tag 1 is attached is legitimately sold, and can be used as proof of purchase of the item, etc. Even if a hologram sheet that can be broken is used as hologram sheet 30 and the broken state is visible through viewing holes 11, 21, hologram sheet 30 can be broken at the time when an item to which product tag 1 is attached is legitimately sold, and can be used as proof of purchase of the item, etc.

[0068] Moreover, the product tag 1 in this embodiment has an RFID tag 50. Therefore, by recording the distribution history of the product to which the product tag 1 is attached in the IC chip 51 of the RFID tag 50, it is possible to prove that the product is not a counterfeit.

[0069] In this embodiment, the security sheet is described by taking as an example a hologram sheet 30 in which an image can be viewed three-dimensionally so that the state changes depending on the viewing angle, and the visible color changes depending on the viewing angle. However, the security sheet is not limited to this hologram sheet 30. For example, a sheet on which fine characters or patterns are displayed may be used as the security sheet, and the fine characters or patterns may be viewed through the viewing holes 11, 21 to prove that the product is not a counterfeit. In that case, a configuration in which a pattern or the like appears depending on the viewing angle of the viewing holes 11, 21, like a banknote, may be used.

[0070] In addition, a material that changes color when irradiated with laser light may be pre-mixed into at least the areas of the hologram sheet 30 that are exposed through the viewing holes 11, 21, so that the material changes color when irradiated with laser light, and the change in color can be seen through the viewing holes 11, 21.

[0071] In addition, as the security sheet of the present invention, an optical function layer made of a fine line pattern such as a hologram can be used as in the present embodiment, and an optical function layer made of a fine line pattern can also be used. In that case, it is possible to use a line width of 0.1 μm to 10 μm as the thin line. In particular, when a special thin line pattern is formed using such a line width, it becomes invisible regardless of whether light is irradiated or not. However, when a specific light is irradiated, a specific optical image can be generated. For example, in the area where the viewing hole 11 and the viewing hole 21 overlap, when a specific light is irradiated from the viewing hole 11 side, a reflected optical image by the thin line pattern is obtained on the viewing hole 11 side, and a transmitted optical image is obtained on the viewing hole 21 side. In addition, in the area where the viewing hole 11 and the viewing hole 21 do not overlap, a reflected optical image is obtained only on the viewing hole 11 side. Similarly, when a specific light is irradiated from the viewing hole 21 side, in the area where the viewing hole 11 and the viewing hole 21 overlap, a reflected optical image is obtained on the viewing hole 21 side, and a transmitted optical image is obtained on the viewing hole 11 side. Furthermore, in the area where the viewing hole 11 and the viewing hole 21 do not overlap, a reflected optical image is obtained only on the viewing hole 21 side. In this way, a transmitted image or a reflected image can be obtained only when light is irradiated, thereby preventing counterfeiting of the product tag 1. In this case, it is preferable that the thin line pattern is formed by thin lines containing a metal. The metal is not particularly limited, but examples thereof include gold, silver, copper, and aluminum. Among these, silver or copper is preferable, and copper or copper oxide is more preferable.

[0072] Here, the specific light is not particularly limited as long as it is light that produces a specific optical image, and light with high optical purity and a uniform phase at a fixed wavelength, such as laser light, is preferred because it increases the light intensity of the optical image and makes it easier to see. Light with a narrow spot diameter, such as laser light, is also preferred because it reduces the area of ​​the viewing holes 11 and 21, making it difficult to counterfeit the security tag of the present invention itself. Furthermore, the optical image may be produced by scanning the specific light.

[0073] In addition, specific examples of specific optical images include a diffraction image, interference fringes produced by superimposing a fine line pattern and a specified filter, and a light and dark pattern corresponding to the period of a fine line pattern obtained by scanning a specific light.

[0074] In this embodiment, the viewing holes 11 and 21 have a circular shape. However, viewing holes of various shapes, such as a rectangular shape or a star shape, can be used as the hole portion of the present invention.

[0075] Second embodiment (Tag configuration) Fig. 7 shows a second embodiment of the security tag of the present invention, where (a) is a front view and (b) is an E-E cross-sectional view of (a). Fig. 8 shows a stacked state of the product tag 101 shown in Fig. 7.

[0076] As shown in Figures 7 and 8, this embodiment is a product tag 101 that differs from that shown in Figures 1 and 2 in the configuration of the back sheet 120 and does not have the RFID tag 50 shown in Figures 1 and 2.

[0077] In the present embodiment, the back sheet 120 has a viewing hole 121 penetrating the front and back of the back sheet 120 in an area facing the viewing hole 11 of the top sheet 10. This allows the hologram sheet 30 to be viewed through the viewing holes 11, 121. The viewing hole 121 is the second opening in the present invention. The viewing hole 121 has a six-pointed star shape, and its six vertices are provided so as to face the circumference of the viewing hole 11 of the top sheet 10. The back sheet 120 is configured by overlapping the top sheet 10 and the hologram sheet 30, as shown in Figs. 1 and 2, and bonding the top sheet 10 and the back sheet 20 via the hologram sheet 30 by adhesive layers 40a and 40b.

[0078] The product tag 101 configured as described above is attached to a product by passing a plastic wire attached to the product through the attachment hole 15, in the same manner as the product tag 1 shown in FIGS.

[0079] (Action by tags) The following describes the actions that are produced by the above-mentioned product tag 101.

[0080] FIG. 9 is a diagram for explaining an area where a transmitted image can be obtained and an area where a reflected image can be obtained in the product tag 101 shown in FIGS.

[0081] As described above, the viewing hole 121 has a six-pointed star shape, and its six vertices are arranged to face the circumference of the viewing hole 11 of the top sheet 10. As a result, the viewing hole 11 formed in the top sheet 10 and the viewing hole 121 formed in the back sheet 120 are partially overlapped in the thickness direction of the product tag 101. Therefore, when a hologram sheet 30 having the optical functions of both a transmission type hologram and a reflection type hologram is used, as shown in Fig. 9, the area where the viewing hole 11 and the viewing hole 121 overlap becomes the transmission image acquisition area 131, and the area where the viewing hole 11 and the viewing hole 121 do not overlap becomes the reflection image acquisition area 132.

[0082] 4(a), in the transmission image acquisition region 131, incident light incident from one surface of the hologram sheet 30 is refracted by the hologram sheet 30 and exits from the other surface of the hologram sheet 30. As a result, in the transmission image acquisition region 131, the transmission image can be viewed three-dimensionally through the viewing holes 11 and 121.

[0083] In addition, in the reflected image acquisition area 132, as shown in FIG. 4B, the incident light incident from one surface of the hologram sheet 30 is reflected by the hologram sheet 30. In this embodiment, the viewing hole 121 has a six-pointed star shape, and its six vertices are arranged to face the circumference of the viewing hole 11 of the top sheet 10. Therefore, in the area facing the viewing hole 121, only the transmitted image acquisition area 131 exists, and the reflected image acquisition area 132 does not exist. As a result, in the reflected image acquisition area 132, a reflected image that changes depending on the viewing angle can be viewed only through the viewing hole 11. Note that even if the viewing hole 121 has a six-pointed star shape, as long as the six vertices are arranged to face the outside of the circumference of the viewing hole 11 of the top sheet 10, the reflected image acquisition area 132 can also exist in the area facing the viewing hole 121.

[0084] FIG. 10 is a diagram for explaining the action produced by the product tag 101 shown in FIGS.

[0085] In the product tag 1 shown in Figures 7 and 8, a hologram sheet 30 is sandwiched between a top sheet 10 and a back sheet 120. The hologram sheet 30 can be seen from the outside through a viewing hole 11 formed in the top sheet 10 and a viewing hole 121 formed in the back sheet 120. The hologram sheet 30 can be one that allows an image to be viewed three-dimensionally so that its state changes depending on the viewing angle, or one that changes the visible color depending on the viewing angle.

[0086] 10, the angle of the stereoscopic image visible through the viewing hole 11 and the color visible through the viewing hole 11 change when the product tag 101 is viewed from viewing direction F and when the product tag 101 is viewed from viewing direction G. This makes it possible to prove that the product to which the product tag 101 is attached is not a counterfeit. In this case, the configuration may be such that a logo mark indicating the brand of the product can be viewed stereoscopically when the hologram sheet 30 is viewed through the viewing hole 11 formed in the top sheet 10 or the viewing hole 121 formed in the back sheet 120.

[0087] It should be noted that the hologram sheet 30 can also be seen through the viewing hole 121 in the back sheet 120. Therefore, it is possible to prove that the product to which the product tag 101 is attached is not a counterfeit by changing the angle of the stereoscopic image visible through the viewing hole 121 or the color visible through the viewing hole 121.

[0088] 9, in a transmission image acquisition area 131 where the viewing holes 11 and 121 overlap, a transmission image is visible through the viewing holes 11, 121, while in a reflected image acquisition area 132 where the viewing holes 11 and 121 do not overlap, a reflected image is visible through the viewing hole 11. In this way, a transmission image is visible in a part of the area through the viewing hole 11, and a reflected image is visible in the other area, so that it can be proved that a product to which the product tag 101 is attached is not a counterfeit.

[0089] Here, in this embodiment as well, the hologram sheet 30 is sandwiched between the top sheet 10 and the back sheet 120, and the top sheet 10 and the back sheet 120 are adhered via the hologram sheet 30 in such a way that peeling is difficult. Therefore, the hologram sheet 30 cannot be easily removed, which prevents counterfeiting of the product tag 101. Furthermore, if fine cut portions or the like are formed in the hologram sheet 30, the hologram sheet 30 will be destroyed when the hologram sheet 30 is forcibly peeled away from the top sheet 10 or the back sheet 120 in order to remove the hologram sheet 30, which also prevents counterfeiting of the product tag 101.

[0090] Thus, even in this embodiment, the hologram sheet 30 is sandwiched between the top sheet 10 and the back sheet 120, but is visible from the outside through the visibility hole 11 formed in the top sheet 10 and the visibility hole 121 formed in the back sheet 120. This makes it possible to make the hologram sheet 30 visible from the outside, but not easily remove it, and thus prevents counterfeiting with a simple configuration.

[0091] In this embodiment, the visual hole 121 formed in the back sheet 120 has a six-pointed star shape. Therefore, it is possible to form an area where the visual hole 11 and the visual hole 121 overlap in the thickness direction and an area where they do not overlap without shifting the relative positions of the visual hole 11 formed in the top sheet 10 and the visual hole 121 formed in the back sheet 120. In this embodiment, the visual hole 11 formed in the top sheet 10 is circular, and the visual hole 121 formed in the back sheet 120 is six-pointed star shape. However, if the visual hole 11 formed in the top sheet 10 and the visual hole 121 formed in the back sheet 120 are different in at least one of their shapes and sizes, it is possible to form an area where the visual hole 11 and the visual hole 121 overlap in the thickness direction and an area where they do not overlap without shifting the relative positions of the visual hole 11 and the visual hole 121.

[0092] Also in this embodiment, a material that changes color when irradiated with laser light can be pre-mixed into at least the areas of the hologram sheet 30 that are exposed through the viewing holes 11, 21, so that the material changes color when irradiated with laser light, and the change in color can be visible through the viewing holes 11, 21.

[0093] Also, in this embodiment, the security sheet of the present invention may use an optical function layer made of a fine line pattern such as a hologram as in this embodiment, or may use an optical function layer made of a fine line pattern. In that case, it is possible to use a line width of 0.1 μm to 10 μm as the thin line. In particular, when a special thin line pattern is formed using such a line width, it becomes invisible regardless of whether light is irradiated or not. However, when a specific light is irradiated, a specific optical image can be generated. For example, in the area where the viewing hole 11 and the viewing hole 121 overlap, when a specific light is irradiated from the viewing hole 11 side, a reflected optical image by the thin line pattern is obtained on the viewing hole 11 side, and a transmitted optical image is obtained on the viewing hole 121 side. Also, in the area where the viewing hole 11 and the viewing hole 121 do not overlap, a reflected optical image is obtained only on the viewing hole 11 side. Similarly, when a specific light is irradiated from the viewing hole 121 side, in the area where the viewing hole 11 and the viewing hole 121 overlap, a reflected optical image is obtained on the viewing hole 121 side, and a transmitted optical image is obtained on the viewing hole 11 side. Furthermore, in the area where the viewing hole 11 and the viewing hole 121 do not overlap, a reflected optical image is obtained only on the viewing hole 121 side. In this way, a transmitted image or a reflected image can be obtained only when light is irradiated, thereby preventing counterfeiting of the product tag 1. In this case, it is preferable that the thin line pattern is formed by thin lines containing a metal. The metal is not particularly limited, but examples thereof include gold, silver, copper, and aluminum. Among these, silver or copper is preferable, and copper or copper oxide is more preferable.

[0094] Here, the specific light is not particularly limited as long as it is light that produces a specific optical image, and light with high optical purity and a uniform phase at a fixed wavelength, such as laser light, is preferred because it increases the light intensity of the optical image and makes it easier to see. Light with a narrow spot diameter, such as laser light, is also preferred because it reduces the area of ​​the viewing holes 11, 121, making it difficult to counterfeit the security tag of the present invention itself. Furthermore, the optical image may be produced by scanning the specific light.

[0095] In addition, specific examples of specific optical images include a diffraction image, interference fringes produced by superimposing a fine line pattern and a specified filter, and a light and dark pattern corresponding to the period of a fine line pattern obtained by scanning a specific light.

[0096] Third embodiment FIG. 11 shows a third embodiment of the security tag of the present invention, where (a) is a front view, (b) is an HH sectional view shown in (a), and (c) is a back view.

[0097] As shown in Figure 11, in comparison with the embodiment shown in Figures 1 and 2, a printed layer 210 is laminated on one side of the hologram sheet 30 as a first coating layer instead of the front sheet 10, and a printed layer 220 is laminated on the other side of the hologram sheet 30 as a second coating layer instead of the back sheet 20, and the product tag 201 does not have an RFID tag 50.

[0098] The printed layer 210 is laminated on one side of the hologram sheet 30 by printing on an area excluding a non-coated area 211 which becomes a first opening in the present invention. The printed layer 220 is laminated on the other side of the hologram sheet 30 by printing on an area excluding a non-coated area 221 which becomes a second opening in the present invention. The printed layers 210 and 220 may be configured to have a product information display area 12 and a price information display area 13 on a white background, or may be configured using a single color ink such as black. The non-coated areas 211 and 221 are provided so that they partially overlap in the thickness direction of the product tag 201. Also, perforations 34 are formed only on the hologram sheet 30.

[0099] Even in the product tag 201 configured as described above, the hologram sheet 30 is visible through the non-coated areas 211, 221, making it possible to prove that the product to which the product tag 201 is attached is not a counterfeit.

[0100] In the above-mentioned embodiment, the product tags 1, 101, 201 having the product information display area 12 and the price information display area 13 have been described as examples. However, the product tag may not have the product information display area 12 or the price information display area 13 and may display only the brand name of the product. Furthermore, the security tag of the present invention is not limited to product tags and can be applied to various tags as long as they can prove that the article to which it is attached is not a counterfeit. [Explanation of symbols]

[0101] 1,101,201 Product Tags 2 items 3 Plastic Wire 10 Surface sheet 11,21,121 Sight holes 12 Product information display area 13 Price information display area 14,34 Perforation 15,33 Mounting holes 20,120 Back sheet 30, 30a, 30b Hologram sheet 31,131 Transmission image acquisition area 32,132 Reflection image acquisition area 40a,40b Adhesive layer 50 RFID tags 51 IC chip 52 Antenna 52a, 52b Conductor part 53 Base Material 210,220 printing layer 211,221 Non-coating area

Claims

1. A security tag having a security sheet having an appearance-proof processing applied thereto between a first covering layer and a second covering layer opposed to the first covering layer, the first covering layer has a first opening through which the security sheet is exposed, the second covering layer has a second opening through which the security sheet is exposed, The security tag has at least a portion of the first opening and the second opening that overlap in a thickness direction.

2. 10. The security tag of claim 1, The anti-counterfeiting treatment is formed of an optical functional layer having a fine line pattern that can obtain a transmitted image, The security tag, wherein the transmitted image is obtained through the first opening or the second opening in a region where the first opening and the second opening overlap in a thickness direction.

3. 10. The security tag of claim 1, The first opening and the second opening have a region where they do not overlap in a thickness direction, The anti-counterfeiting treatment is composed of an optical functional layer having a fine line pattern that can obtain a reflected image, The security tag, wherein the reflected image is obtained through the first opening or the second opening in a region where the first opening and the second opening do not overlap in a thickness direction.

4. 10. The security tag of claim 1, The first opening and the second opening have a region where they do not overlap in a thickness direction, The anti-counterfeiting treatment is composed of an optical functional layer having a fine line pattern that can obtain a transmitted image and a reflected image, a security tag in which the transmitted image is obtained through the first opening or the second opening in a region where the first opening and the second opening overlap in the thickness direction, and the reflected image is obtained through the first opening or the second opening in a region where the first opening and the second opening do not overlap in the thickness direction.

5. 5. The security tag of claim 1, The first opening and the second opening are different in at least one of their shape and size.

6. 5. The security tag of claim 1, A security tag having an RFID between the first coating layer and the second coating layer, the RFID transmitting and receiving data with an external read / write device without contact.

7. 5. The security tag of claim 2, further comprising: The optical functional layer is configured to be breakable or discolorable, The security tag is configured so that any breakage or discoloration of the optical functional layer can be visually recognized through at least one of the first opening and the second opening.

Images