JP4515066B2 - Authenticity determination medium, authenticity determination medium label, authenticity determination medium transfer sheet, authenticity determination sheet, and authenticity determination information recording medium - Google Patents

Description

  The present invention relates to a medium for authenticity determination that can be distinguished from those obtained by forgery or falsification based on unauthorized intentions. The present invention also relates to such a medium for authenticity determination processed into a label form or transfer sheet form suitable for application to an article. Furthermore, the present invention also relates to a sheet and an information recording body to which the authenticity determination medium is applied.

  For example, credit cards, deposit and saving cards, various types of cash vouchers, or identification cards, etc., cause various troubles if they are counterfeited or tampered with and used illegally, so in order to prevent damage caused by forgery or tampering It is desirable to have a function that can identify the authenticity of each. In addition, for example, luxury products such as wristwatches, leather products, precious metal products or jewelry, in particular, what are said to be luxury brand products, audio products, electrical appliances, music software recorded on media, video software, game software, Alternatively, computer software is also subject to counterfeiting, and similarly, it is desirable to have a function that can identify authenticity.

  Conventionally, holograms are frequently used for the purpose of enabling authenticity identification of various articles including the above-mentioned articles. This is because the hologram has manufacturing difficulties due to the precision of its structure. However, the method of manufacturing a hologram is known to experts, and since it is precise, it is difficult to distinguish between a genuine hologram and a forged hologram.

Therefore, as a substitute for the hologram, a base material and a light selective reflection layer that is formed on one surface of the base material and reflects only one of the left-hand polarized light and the right-hand polarized light among the incident light. And a true / false determination body having a determination unit that includes determination information for determining a new product, which is formed on at least a part of the light selective reflection layer (see, for example, Patent Document 1).
JP 2000-25373 (page 3-5, FIG. 1).

  In the authenticity determination body described in Patent Document 1, the determination part is still formed of an embossed hologram, and although it is possible to form a precise pattern as the determination part, the unevenness of the hologram engraved in the embossed shape is sufficient. In order to reproduce, it is necessary to sufficiently increase the contact time between the embossing mold and the material to be embossed, and it is difficult to shorten the manufacturing time, and the manufacturing process of the embossing mold itself has many steps. There is also a disadvantage that it is difficult to change the pattern.

  The problem of the present invention is that it is difficult to shorten the manufacturing time when forming the determination part with an embossed hologram, and there are many steps during the manufacture of the emboss mold, and it is difficult to change the pattern of the determination part. It is an object of the present invention to provide a true / false determination medium capable of solving

Problems of the present invention described above, a light selective reflecting pattern layer made of a cholesteric liquid crystal is composed of a cholesteric liquid crystal, and an optical selection you have a portion oriented by passing through the low orientation pattern layer is decreased Since it has been found that the problem can be solved by laminating the reflective layer on the substrate, the present invention has been achieved based on this.

According to a first aspect of the present invention for solving the problem, a first light selective reflection layer made of cholesteric liquid crystal having a light selective reflection property that reflects either left circularly polarized light or right circularly polarized light in incident light is patterned. A light selective reflection pattern layer formed of a cholesteric liquid crystal having a light selective reflection property that reflects either left circularly polarized light or right circularly polarized light of incident light, and a low orientation pattern layer. has a portion where the light selective reflection property deteriorate by via, wherein the first light selective reflecting layer different in thickness or helical pitch of the liquid crystal layer, and a color different second light selective reflection layer, group The present invention relates to a medium for authenticity determination characterized by being laminated on a material so as to be visible.

According to a second invention, in the first invention, the base material is transparent, and the light selective reflection pattern layer and the second light selective reflection layer are laminated in this order on the observation side of the base material. The present invention relates to a medium for authenticity determination characterized by the above.

According to a third invention, in the first invention, the base material is transparent, and the second light selective reflection layer and the light selective reflection pattern layer are laminated in this order on the observation side of the base material. The present invention relates to a medium for authenticity determination characterized by the above.

In a fourth aspect based on the first aspect , the base material is transparent, the second light selective reflection layer on the observation side of the base material, and the light selective reflection pattern layer on the back side of the base material. The present invention relates to a medium for authenticity determination characterized by being laminated.

A fifth invention relates to a medium label for authenticity determination, wherein an adhesive layer is further laminated on the medium for authenticity determination of any one of the first to fourth inventions.

The sixth invention relates to a medium transfer sheet for authenticity determination, wherein the authenticity determination medium of any one of the first to fourth inventions is laminated on a peelable surface of a peelable substrate. is there.

7th invention relates to the sheet | seat which can authenticate authenticity characterized by having the authenticity determination medium of any one of 1st- 4th invention visibly in a part of sheet | seat.

According to an eighth aspect of the present invention, the authenticity determination medium of any of the first to fourth aspects is laminated on the surface of an information recording body that is an authenticity determination target or is visible on a part of the information recording body. The present invention relates to an information recording body capable of authenticity determination.

According to the first invention, the portion where the light selective reflection layer property of the second light selective reflection layer is lowered and the light selective reflection pattern layer are visible even in a normal state, but right circularly polarized light or left Irradiation with circularly polarized light is either reflective and colored, making it clearer or completely invisible, and lowering the light selective reflection layer properties The formation of the selected portion and the formation of the light selective reflection pattern layer can be easily performed by, for example, printing, etc., so that a medium for authenticity determination that does not increase the number of manufacturing steps and can be easily changed is provided. can do.

According to the second invention, in addition to the effects of the first invention, since it can be produced by laminating each layer only on one side of the substrate, it is possible to provide a true / false determination medium having an advantage of being easy to produce. .

According to the third invention, in addition to the effects of the first invention, the light selective reflection layer having a portion in which the light selective reflectivity is partially lowered is formed in common, and various patterns are used as the light selective reflection pattern layer. It is possible to provide a true / false determination medium having an advantage suitable for forming the above.

According to the fourth invention, in addition to the effects of the first invention, the light selective reflection layer and the light selective reflection pattern layer are laminated with the base material interposed therebetween. An authenticity determination medium that can be manufactured with less influence can be provided.

According to the fifth invention, there is provided a true / false determination medium label that can be easily applied to an article using an adhesive layer as a true / false determination medium capable of exhibiting the effects of any of the first to fourth inventions. Can be provided.

According to the sixth invention, since the authenticity determination medium capable of exhibiting the effects of any of the first to fourth inventions is configured to be transferable, the authenticity determination medium that can be easily applied to articles. A transfer sheet can be provided.

According to the seventh invention, since the authenticity determination medium according to any one of the first to fourth inventions is applied, the authenticity determination sheet that enables the authenticity determination of the added information is provided. Can be provided.

According to the eighth invention, since the medium for authenticity determination according to any one of the first to fourth inventions is applied, an information recording body capable of authenticating itself is provided. can do.

  As illustrated in FIG. 1A, the authenticity determination medium 1 of the present invention has an alignment film 3 laminated on the observation side of the substrate 2, the upper surface in the drawing, and incident light is incident on the upper surface of the alignment film 3. Light selective reflection that reflects either left circularly polarized light or right circularly polarized light, and the low selective orientation that reduces the orientation of the patterned light selective reflection pattern layer 4 and the alignment film 3 Two kinds of patterns of the pattern layer 5 are laminated, and the light selective reflection layer 6 is laminated on the upper surface of the two kinds of pattern layers 4 and 5. The orientation pattern layer 5 has a portion where the light selective reflectivity is lowered. Since this laminated structure can be produced by sequentially laminating each layer only on one side of the substrate 2, it has the advantage of being easy to produce.

  As illustrated in FIG. 1B, the authenticity determination medium 1 of the present invention has an alignment film 3 laminated on the upper surface of the substrate 2 in the drawing, and a low alignment pattern layer on the upper surface of the alignment film 3. 5, the light selective reflection layer 6 and the light selective reflection pattern layer 4 may have a laminated structure in which they are laminated in the order of description. In this layered structure, the low orientation pattern layer 5 is used as a common pattern, and the light selective reflection layer 6 is formed once, and then various patterns are formed as the light selective reflection pattern layer 4. Has the advantage of being suitable for.

  As illustrated in FIG. 1C, in the authenticity determination medium 1 of the present invention, an alignment film 3 is laminated on the upper surface of the substrate 2 in the drawing, and a low alignment pattern layer is formed on the upper surface of the alignment film 3. 5 and the light selective reflection layer 6 are laminated in the order described, and the light selective reflection pattern layer 4 is laminated on the lower surface of the substrate 2, that is, the surface on which the layers 5 and 6 are not laminated. May be. This laminated structure is also suitable for forming various patterns as the light selective reflection pattern layer 4 using the low orientation pattern layer 5 as a common pattern. Further, in this laminated structure, the light selective reflection layer 6 and the light selective reflection pattern layer 4 can be formed by eliminating the influence of the component in the composition for forming one layer on the other layer. There are also advantages.

  As in the above three examples, the authenticity determination medium 1 of the present invention is essentially a laminate of the light selective reflection layer 6 having a portion with reduced light selective reflectivity and the light selective reflection pattern layer 4. However, it is more preferable to accompany a base material for supporting each of these layers, specifically, referring to FIG. 1 (a) or FIG. 1 (b). In the example, each layer is laminated on the observation side of the base material 2 that does not necessarily need to be transparent. In the example described with reference to FIG. Each layer is laminated separately on the observation side and the back side. In short, each layer is laminated so as to be visible on the substrate 2.

In the above three examples, the light selective reflection pattern layer 4 and the light selective reflection layer 6 are layers made of a material having light selective reflectivity that reflects either left circularly polarized light or right circularly polarized light in incident light. For example, it is preferably composed of a cholesteric liquid crystal layer, and the layer 4 and the layer 6 preferably have different layer thicknesses or different helical pitches of the liquid crystal and different colors. The low orientation pattern layer 5 is laminated on a surface having orientation, and reduces the orientation of the orientation surface, that is, the orientation surface, and is made of, for example, a resin film.

  In the above three examples, the base material 2 has shown that which requires another alignment film 3, but when the stretched plastic sheet is used as the base material 2, the surface originally has orientation. The stacking of the alignment film 3 can be omitted. That is, the light selective reflection layer 6 in the present invention is laminated on the orientation surface of the base material via the low orientation pattern layer regardless of whether or not the orientation film is interposed.

  As the base material 2, it is possible to reduce the thickness, and it is preferable to have a solvent resistance and a heat resistance that can withstand the processing when manufacturing the medium for mechanical strength and authenticity determination. Since it depends on the purpose of use, it is not limited, but a film-like or sheet-like plastic is preferable. For example, various plastic films such as polyethylene terephthalate (PET), polycarbonate, polyvinyl alcohol, polysulfone, polyethylene, polypropylene, polystyrene, polyarylate, triacetyl cellulose (TAC), diacetyl cellulose, and polyethylene / vinyl alcohol can be exemplified. .

  The alignment film 3 may be any one as long as it can be generally used as an alignment film, such as polyvinyl alcohol resin (PVA) or polyimide resin. The alignment film 3 is formed by applying a solvent solution of these resins to the surface of the substrate 2 as described above by an appropriate application method and drying, followed by rubbing with a cloth, a brush, or the like. To do.

  The light selective reflection pattern layer 4 is composed of a cholesteric liquid crystal layer. The cholesteric liquid crystal layer in the aligned state has a property of reflecting only one of left circularly polarized light and right circularly polarized light in incident light. The light selective reflection pattern layer 4 can be formed by applying a solvent solution of cholesteric liquid crystal by various printing methods and drying, or, at this time, an ultraviolet polymerizable composition using a polymerizable cholesteric liquid crystal. It is also possible to apply the obtained ultraviolet polymerizable composition by various printing methods, and after drying, polymerize by irradiation with ultraviolet rays.

  The low orientation pattern layer 5 may be any layer as long as it lowers the orientation of the orientation plane. The low orientation pattern layer 5 is preferably a resin layer formed by using an appropriate resin solution or dispersion because formation by various printing methods is advantageous for pattern formation.

  When the alignment film 3 is accompanied, the material constituting the low-orientation pattern layer 5 and the material constituting the lower alignment film 3 may be the same or different, but both are composed of the same material, When the low orientation pattern layer 5 is made of a transparent material, the low orientation pattern layer 5 is not visible at all or hardly visible in a normal state. In the case where the light selective reflection layer 6 is laminated on the low orientation pattern layer 5 that does not look like this, when the right circularly polarized light or the left circularly polarized light reflected by the light selective reflective layer 6 is irradiated, the low orientation property is reduced. The presence of the pattern layer 5 has an advantage that a highly transparent pattern can be visually recognized.

  The light selective reflection pattern layer 4 and the low orientation pattern layer 5 are preferably patterned by the presence or absence of layers as illustrated in FIGS. 1 (a), 1 (b), and 1 (c). The pattern of the light selective reflection pattern layer 4 and the pattern of the low orientation pattern layer 5 are preferably different from each other and preferably have no overlapping portion. A part may overlap due to a problem in positional accuracy during formation.

  The light selective reflection layer 6 is also formed of a cholesteric liquid crystal layer like the light selective reflection pattern layer 4 and can be formed by applying a solvent solution of cholesteric liquid crystal by various coating methods and drying. It is also possible to prepare an ultraviolet polymerizable composition using a polymerizable cholesteric liquid crystal, apply the obtained ultraviolet polymerizable composition by various coating methods, and after drying, polymerize by irradiation with ultraviolet rays. it can.

  The authenticity determination method will be described with reference to the authenticity determination medium 1 described with reference to FIGS. 1A, 1B, and 1C. As shown in FIG. 2A, the authenticity determination medium 1 of the present invention includes a pattern 21 that is a letter “A” formed by the light selective reflection pattern layer 4 and a background pattern formed by the low orientation pattern layer 5. 22 and a plain portion 23 without any pattern. However, FIG. 2A shows the appearance when observed under natural light, and at this time, both the pattern 21 and the tint block 22 are visible. Here, it is assumed that both the light selective reflection pattern layer 4 and the light selective reflection layer 6 reflect right circularly polarized light.

  First, when the right circularly polarizing plate is overlaid on the light selective reflection layer 6, reflection occurs on the plain portion 23 without any pattern, and color is developed based on the helical pitch of the cholesteric liquid crystal constituting the light selective reflection layer 6. A plain part 23 'is given. At this time, since the portion of the tint block 22 is accompanied by the low orientation pattern layer 5, the orientation of the light selective reflection layer 6 is lower than the portion not accompanied by the low orientation pattern layer 5. Therefore, a visualized background pattern 22 ′ is provided in order to be in a reflective and colored state different from the plain portion 23 without any pattern. Further, the portion of the pattern 21 that is the letter “A” is also the same as the light selective reflection layer 6 except that the liquid crystal layer has a different reflectivity and coloring state based on the difference in the helical pitch. A visualized pattern 21 'is provided.

  Next, when the left circularly polarizing plate is overlapped except for the right circularly polarizing plate, since the left circularly polarized light is incident on the light selective reflection layer 6 in the background portion 22 and the plain portion 23, no reflection occurs. Color development does not occur in the portion 22 and the plain portion 23, and no reflection occurs in the portion of the pattern 21 that is the letter “A”, and therefore no color is generated in any portion.

  Therefore, the authenticity determination medium 1 of the present invention exhibits different reflectivity by allowing the right circularly polarized light and the left circularly polarized light to be incident separately from each other. Confirm the appearance of authenticity, or enter the right and left circularly polarized light into both authenticity and authenticity and compare the reflectivity or appearance. Thus, authenticity determination can be performed. Note that right circularly polarized light or left circularly polarized light is incident on the light selective reflection layer 6 side and is observed simply by superimposing the right circularly polarizing plate or the left circularly polarizing plate on the light selective reflection layer 6 side. It may be.

  The authenticity determination medium 1 of the present invention described with reference to FIG. 1 is processed into the form of a label or transfer sheet, as will be described next with reference to FIG. Can be easily applied to various articles to be applied.

  FIG. 3A relates to the form of the label. In the example shown in the figure, the substrate 2, the alignment film 3, the light selective reflection pattern layer 4, the low orientation pattern layer 5, and the light selective reflection layer 6 are provided. An authenticity determination medium label 11 is configured by laminating an adhesive layer 12 on the base 2 side of a medium for authenticity determination 1 (having the structure shown in FIG. 1A) having a laminated structure that is sequentially laminated. The authenticity determination medium 1 for constituting the authenticity determination medium label 11 is not limited to the above-described laminated structure, but has another laminated structure described with reference to FIG. It may have a laminated structure in which the film 3 is omitted.

  In the above description with reference to FIG. 3A, the adhesive layer 12 is laminated on the substrate 2 side, but the adhesive layer may be laminated on the light selective reflection layer 6 side, either side. Whether or not the adhesive layer is laminated depends on whether the substrate 3 side or the light selective reflection layer 6 side becomes the incident surface when labels are applied to various articles. The adhesive layer 12 may be various types of adhesive layers, but is preferably a heat-sensitive adhesive layer or a pressure-sensitive adhesive layer. The same applies when the authenticity determination medium label 11 is formed of the other laminated structure described with reference to FIG.

  FIG. 3B relates to the form of the transfer sheet. In the illustrated example, the substrate 2, the alignment film 3, the light selective reflection pattern layer 4 and the low orientation pattern layer 5, and the light selective reflection layer 6 are shown. Are laminated on the substrate 2 side of the medium for authenticity determination 1 (having the structure shown in FIG. 1 (a)), and the peelable substrate 14 is formed on the light selective reflection layer 6 side. The medium transfer sheet 13 for authenticity determination is configured by laminating the peelable surface 14a side. The authenticity determination medium 1 for constituting the authenticity determination medium transfer sheet 13 is not limited to the above-described laminated structure, but may be another laminated structure described with reference to FIG. It may have a laminated structure in which 3 is omitted.

Also in the case of the authenticity determination medium transfer sheet 12, which side the adhesive layer is laminated on is determined by:
When the transfer sheet is applied to various articles, it is determined depending on which of the base material 2 side and the light selective reflection layer 6 side is the incident surface, and the peelable base material 2 is laminated on the side where the adhesive layer is not laminated. . Again, the adhesive layer 12 can be various types of adhesive layers, but is preferably a heat sensitive adhesive layer or a pressure sensitive adhesive layer. The same applies when the authenticity determination medium transfer sheet 13 is formed of the other laminated structure described with reference to FIG. The adhesive layer may be applied to the surface of various articles to which the authenticity determination medium 1 should be applied, and the transfer sheet may be configured without an adhesive layer.

  The authenticity determination medium 1 of the present invention is preferably a variety of articles using the authenticity determination medium label 11 or the authenticity determination medium transfer sheet 13 as described above. Can be applied to. The authenticity determination medium label 11 is applied by sticking the adhesive layer 12 toward the article to be adhered, and the authenticity determination medium transfer sheet 13 is used. Then, after the adhesive layer 12 is adhered toward the article serving as the adherend, it is applied by peeling the peelable substrate 14.

  FIG. 4 is a diagram for explaining application of the authenticity determination medium 1 mainly for a sheet-like object. What is shown in FIG. 4A is an information recording body 15 capable of determining authenticity, in which the authenticity determination medium 1 is laminated on a part of the surface of the information recording body 16. The information recording body 16 is a sheet-like material whose base material is paper, plastic sheet or the like. In the example shown in the figure, information 17 such as an amount for use as a cash voucher, characters such as issuing company name, cautionary notes, or a coloring pattern. Is formed and recorded by means such as printing.

  In FIG. 4B, the authenticity determination medium 1 is built in a sheet-like material in advance so as to be visible, and a recessed opening 19 that does not become a through-hole in paper or a plastic sheet. Is formed so that the authenticity determination medium 1 can be seen from the opening 19, and the authenticity determination medium 1 has a very narrow width of about 0.5 mm to 5 mm as an example in order to facilitate application. In the case of paper, it is cut into a middle-long long thread shape. When laminating several layers constituting the paper, an opening 19 is provided in the layer constituting the surface layer, and the layers of the sheet-like material are provided. The thread-like authenticity determination medium 1 is applied by being sandwiched between the two. If necessary, the thread-like authenticity determination medium 1 is colored with a dark color or the like on one side of the base material for the purpose of improving the visibility when irradiated with circularly polarized light, and is incorporated in a sheet-like material. In order to ensure the adhesiveness between the thread-like authenticity determination medium 1 and the sheet-like material in a state where the adhesive is used, an adhesive layer, preferably a heat-sensitive adhesive layer, may be laminated on one side or both sides. Such a sheet-like material to which the authenticity determination medium 1 is applied is suitable for use in an information recording body, in particular, a printed matter having a cash voucher or other economic value.

  A TAC film is prepared, and a PVA solution (PVA resin manufactured by Kuraray Co., Ltd., product number: “110”, used as a 2% aqueous solution (transparent)) is applied to the surface and dried, followed by rubbing treatment. An alignment film was formed. On the formed alignment film, a PVA solution (PVA resin manufactured by Kuraray Co., Ltd., product number: “110”, used as a 5% aqueous solution (transparent)) and a polymerizable cholesteric liquid crystal solution were used, respectively, by gravure printing, Two different patterns consisting of letters and designs were printed. The polymerizable cholesteric liquid crystal solution is composed of a polymerizable nematic liquid crystal (manufactured by BASF Corporation, trade name: “Palio Color LC242”), a chiral agent (manufactured by BASF Corporation, trade name: “Palio Color LC756”) and ultraviolet polymerization. This was a 40% solution (solvent was toluene) containing an initiator, printed and dried, and then cured by irradiation with ultraviolet rays. The formed cholesteric liquid crystal pattern layer reflects right circularly polarized light.

  A gravure coating was performed on the two types of formed patterns using a polymerizable cholesteric liquid crystal solution, dried, and then irradiated with ultraviolet rays to form a cholesteric liquid crystal layer, thereby obtaining a medium for authenticity determination. . The polymerizable cholesteric liquid crystal solution used here is a polymerizable nematic liquid crystal (manufactured by BASF Corporation, trade name: “Palio Color LC242”), a chiral agent (manufactured by BASF Corporation, trade name: “Palio Color LC756”). ) And an ultraviolet polymerization initiator were blended in a 15% solution (the solvent is toluene), and the blending ratio of the nematic liquid crystal and the chiral agent was prepared to be different from that for pattern printing. The formed cholesteric liquid crystal layer reflects right circularly polarized light. The polymerizable cholesteric liquid crystal solution used for printing in the previous paragraph and the polymerizable cholesteric liquid crystal solution used for coating in this paragraph both had a polymerizable nematic liquid crystal / chiral agent blending ratio of 95.5 / 4. 5 and the ultraviolet polymerization initiator is a blend of 5% with respect to the polymerizable nematic liquid crystal.

  A PET film was prepared instead of the TAC film, and printing / coating was performed without forming an alignment film to obtain an authenticity determination medium. However, the solution and application means used for printing and coating, curing after application, and the like were the same as in Example 1.

  When the right circularly polarizing plate is overlapped on the coated side of the authenticity determination medium obtained in Example 1 and Example 2, the portion printed with the PVA solution is not printed due to reflection of the cholesteric liquid crystal layer. Due to the difference in color from the part, the pattern was visible, and the pattern printed with the cholesteric liquid crystal solution was also visible. Next, when the right circularly polarizing plate is removed and the left circularly polarizing plate is overlapped, neither part develops color. As described above, by using the right circularly polarizing plate and the left circularly polarizing plate, the authenticity determination can be made. It was possible.

It is a figure which shows the example of the laminated structure of the medium for authenticity determination of this invention. It is a figure which shows the authenticity determination method using the authenticity determination medium of this invention. It is a figure which shows the label and transfer sheet | seat suitable for applying the authenticity determination medium of this invention to various articles | goods. It is a figure which shows the example of application of the medium for authenticity determination of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Medium for authenticity determination 2 ... Base material 3 ... Orientation film 4 ... Light selective reflection pattern layer 5 ... Low orientation pattern layer 6 ... Light selective reflection layer 11 ... Medium label for authenticity determination 13 …… Medium transfer sheet for authenticity determination 15 …… Information recording medium 18 capable of authenticity determination …… Sheet 21 capable of authenticity determination …… Pattern 22 …… Background pattern 23 …… Plain part

Claims (8)

Having light selective reflecting for reflecting either one of left circular polarized light or right circular polarized light of the incident light, a first light selective reflecting pattern layer light selective reflection layer is a pattern composed of a cholesteric liquid crystal , Composed of cholesteric liquid crystal that has light selective reflectivity to reflect either left circularly polarized light or right circularly polarized light among the incident light, and the light selective reflective property is lowered by passing through the low orientation pattern layer The first light selective reflection layer having a portion is different from the first light selective reflection layer in the thickness or the helical pitch of the liquid crystal, and the second light selective reflection layer having a different color is visibly laminated on the substrate. A medium for authenticity determination characterized by A said substrate a transparent, authenticity of claim 1 Symbol mounting the light selective reflecting pattern layer and the second light selective reflection layer on the observation side of said substrate, characterized in that are laminated in this order Judgment medium. A said substrate a transparent, authenticity of claim 1 Symbol mounting the second light selective reflection layer and the light selective reflecting pattern layer on the observation side of said substrate, characterized in that are laminated in this order Judgment medium. A said substrate a transparent, claim 1, wherein the second light selective reflection layer on the observation side of the substrate, wherein the light selective reflecting pattern layer on the back side of said substrate, characterized in that it is laminated serial mounting of authenticity determination for the media. Authenticity determination medium label, characterized in that the claims 1 to 4 further adhesive layer authenticity determination medium according to any one is laminated. An authenticity determination medium transfer sheet, wherein the authenticity determination medium according to any one of claims 1 to 4 is laminated on a releasable surface of a releasable substrate.   A sheet capable of authenticity determination, comprising the medium for authenticity determination according to any one of claims 1 to 4 so as to be visible in a part of the sheet. The authenticity determination medium according to any one of claims 1 to 4 is laminated on a surface of an information recording body which is an object of authenticity determination, or is visible on a part of the information recording body. An information recording medium that can determine whether the feature is true or false.

Images