WO2016068232A1 - Procédé pour déterminer l'authenticité d'un support anti-contrefaçon et dispositif de détermination d'authenticité pour support anti-contrefaçon - Google Patents

Procédé pour déterminer l'authenticité d'un support anti-contrefaçon et dispositif de détermination d'authenticité pour support anti-contrefaçon Download PDF

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Publication number
WO2016068232A1
WO2016068232A1 PCT/JP2015/080538 JP2015080538W WO2016068232A1 WO 2016068232 A1 WO2016068232 A1 WO 2016068232A1 JP 2015080538 W JP2015080538 W JP 2015080538W WO 2016068232 A1 WO2016068232 A1 WO 2016068232A1
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WO
WIPO (PCT)
Prior art keywords
counterfeit medium
electromagnetic wave
medium
selective transmission
transmission layer
Prior art date
Application number
PCT/JP2015/080538
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English (en)
Japanese (ja)
Inventor
伸子 老川
北村　満
浩司 衞藤
山内　豪
知枝 佐藤
Original Assignee
大日本印刷株式会社
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Publication of WO2016068232A1 publication Critical patent/WO2016068232A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing

Definitions

  • the present invention relates to an anti-counterfeit medium authentication method for determining the authenticity of an anti-counterfeit medium such as an ID card, banknote, and securities.
  • the fluorescent ink is an ink including a phosphor that absorbs an electromagnetic wave having a specific wavelength in a wavelength region from an ultraviolet region to an infrared region and emits another electromagnetic wave having a wavelength different from the electromagnetic wave.
  • a fluorescent image light-emitting image
  • the light emitting image includes a first region including the first phosphor and a second phosphor. And at least a part of the second region is adjacent to the first region and is irradiated with invisible light in the first wavelength region, or invisible light in the second wavelength region.
  • the first phosphor and the second phosphor are irradiated, the first phosphor and the second phosphor emit light of a color that is visually recognized as the same color, and invisible light in the first wavelength region and invisible in the second wavelength region.
  • a light-emitting medium characterized in that when the light is simultaneously irradiated, the first phosphor and the second phosphor emit light of colors that are visually recognized as different colors.
  • Patent Document 2 in a certificate including a carrier having a window-shaped through-opening, the opening is closed by a cover foil, and the cover foil is formed after the carrier is manufactured, and is at least partially Is transparent, protrudes in four directions beyond the opening, is fixed to the surface of the carrier, and is disposed in a recess in the surface of the carrier including the window-like opening.
  • Patent Document 2 describes that the cover foil may be provided with a diffraction structure.
  • a method for authenticating the anti-counterfeit medium when the above-described anti-counterfeit medium is used for example, irradiation light for reproduction is irradiated to a luminescent image, a diffraction structure, etc. from one side of the anti-counterfeit medium
  • a method is employed in which the anti-counterfeit medium is observed from the same side as the light irradiation direction, thereby confirming the emission image and the diffraction image and determining the authenticity of the anti-counterfeit medium.
  • the authenticity of the forgery prevention medium is determined by observing the images printed on the front and back of the forgery prevention medium with respect to the printed layer and the like arranged in the transparent area.
  • the method is adopted. That is, in the conventional method for determining the authenticity of an anti-counterfeit medium, information such as a luminescent image that is used for authenticity determination uses information whose information changes depending on the observation direction or the irradiation direction of illumination light for reproduction. Is not expected.
  • the present invention has been made in view of the above circumstances, and provides an anti-counterfeit medium authenticity determination method capable of highly authenticating an anti-counterfeit medium, and an anti-counterfeit medium authenticity determination apparatus used therefor.
  • the main purpose is to do.
  • the present invention absorbs an electromagnetic wave having a specific wavelength out of a wavelength range from an ultraviolet region to an infrared region and laminated on the selective transmission layer and the selective transmission layer,
  • a forgery prevention medium having a light emitting layer containing a phosphor that emits another electromagnetic wave having a different wavelength, and having a selective transmission property in which the selective transmission layer absorbs or reflects the electromagnetic wave and transmits the other electromagnetic wave is prepared.
  • the anti-counterfeit medium is disposed so that the observer faces the light-emitting layer side or the selective transmission layer side of the anti-counterfeit medium, and the light-emitting layer side and the selective transmission layer side of the anti-counterfeit medium
  • the authenticity of the anti-counterfeit medium is characterized by determining the authenticity of the anti-counterfeit medium using a change in the form of the other electromagnetic waves observed by the observer by irradiating the electromagnetic wave with the electromagnetic wave. To provide a constant method.
  • the anti-counterfeit medium is arranged so that an observer faces the light emitting layer side or the selective transmission layer side of the anti-counterfeit medium,
  • the electromagnetic wave By irradiating the electromagnetic wave on the light emitting layer side and the selective transmission layer side, when the electromagnetic wave is irradiated on the light emitting layer side and when the electromagnetic wave is irradiated on the selective transmission layer side, from the observer
  • the form of other electromagnetic waves observed can be changed. Therefore, the authenticity determination of the anti-counterfeit medium can be performed at a high level by using the change in the form of the other electromagnetic waves.
  • the present invention absorbs an electromagnetic wave having a specific wavelength out of a wavelength range from an ultraviolet region to an infrared region laminated on the selective transmission layer and the selective transmission layer and absorbs another electromagnetic wave having a wavelength different from the electromagnetic wave.
  • a forgery prevention medium having a light emitting layer containing a phosphor that emits light, the selective transmission layer absorbing or reflecting the electromagnetic wave and transmitting the other electromagnetic wave, and having an observation position of an observer;
  • the anti-counterfeit medium is arranged so that the irradiation position of the electromagnetic wave is located on the same surface side of the anti-counterfeit medium, and the emission layer side and the selective transmission layer side of the anti-counterfeit medium are the irradiation position of the electromagnetic wave.
  • the change in the form of the other electromagnetic wave observed by the observer is used.
  • the anti-counterfeit medium disposing the anti-counterfeit medium so that the observer's observation position and the electromagnetic wave irradiation position are located on the same surface side of the anti-counterfeit medium,
  • the electromagnetic wave was irradiated to the emission layer side. It is possible to change the form of another electromagnetic wave observed by the observer depending on the case and the case where the electromagnetic wave is irradiated on the selective transmission layer side. Therefore, the authenticity determination of the anti-counterfeit medium can be performed at a high level by using the change in the form of the other electromagnetic waves.
  • the present invention absorbs an electromagnetic wave having a specific wavelength out of a wavelength range from an ultraviolet region to an infrared region laminated on the selective transmission layer and the selective transmission layer and absorbs another electromagnetic wave having a wavelength different from the electromagnetic wave.
  • a forgery prevention medium having a light emitting layer containing a phosphor that emits light, the selective transmission layer absorbing or reflecting the electromagnetic wave, and transmitting the other electromagnetic waves is prepared.
  • the anti-counterfeit medium is arranged between the irradiation position and the position of the anti-counterfeit medium is changed so that the light emitting layer side and the selective transmission layer side of the anti-counterfeit medium face the irradiation position of the electromagnetic wave.
  • the authenticity of the anti-counterfeit medium is characterized by determining the authenticity of the anti-counterfeit medium by using the change in the form of the other electromagnetic wave observed by the observer by irradiating the electromagnetic wave. To provide a determination method.
  • the anti-counterfeit medium is disposed between the observer and the irradiation position of the electromagnetic wave, and the light emitting layer side and the selective transmission layer side of the anti-counterfeit medium are the above-described electromagnetic wave.
  • the electromagnetic wave is irradiated to the light emitting layer side by irradiating the electromagnetic wave by changing the position of the anti-counterfeit medium so as to face the irradiation position, and when the electromagnetic wave is irradiated to the selective transmission layer side
  • the form of other electromagnetic waves observed by the observer can be changed. Therefore, the authenticity determination of the anti-counterfeit medium can be performed at a high level by using the change in the form of the other electromagnetic waves.
  • the present invention absorbs an electromagnetic wave having a specific wavelength out of a wavelength range from an ultraviolet region to an infrared region laminated on the selective transmission layer and the selective transmission layer and absorbs another electromagnetic wave having a wavelength different from the electromagnetic wave.
  • anti-counterfeit medium used for anti-counterfeit medium having a light-emitting layer containing a phosphor that emits light, and wherein the selective transmission layer absorbs or reflects the electromagnetic waves and transmits the other electromagnetic waves.
  • An authenticity determination device wherein an anti-counterfeit medium is disposed, an anti-counterfeit medium is disposed on both sides of the anti-counterfeit medium, and the anti-counterfeit medium is irradiated with the electromagnetic waves.
  • the irradiation unit is controlled so that irradiation of the electromagnetic wave from one irradiation unit and the other irradiation unit among the irradiation units arranged on both sides of the medium can be switched.
  • An anti-counterfeit medium authenticity judging device comprising: a control unit; and an observation unit that is provided on one of the irradiation units and that observes the anti-counterfeit medium when the anti-counterfeit medium is disposed. To do.
  • the authenticity determination device for anti-counterfeit medium has the above-described configuration, so that it is possible to irradiate electromagnetic waves to the light emitting layer side and the selective transmission layer side of the anti-counterfeit medium described above. Therefore, the anti-counterfeit medium authenticity determination method described above can be performed using the anti-counterfeit medium authenticity determination apparatus of the present invention.
  • the present invention absorbs an electromagnetic wave having a specific wavelength out of a wavelength range from an ultraviolet region to an infrared region laminated on the selective transmission layer and the selective transmission layer and absorbs another electromagnetic wave having a wavelength different from the electromagnetic wave.
  • an electromagnetic wave having a specific wavelength out of a wavelength range from an ultraviolet region to an infrared region laminated on the selective transmission layer and the selective transmission layer and absorbs another electromagnetic wave having a wavelength different from the electromagnetic wave.
  • anti-counterfeit medium used for anti-counterfeit medium having a light-emitting layer containing a phosphor that emits light, and wherein the selective transmission layer absorbs or reflects the electromagnetic waves and transmits the other electromagnetic waves.
  • An authenticity determination device which is an arrangement unit that arranges the anti-counterfeit medium, an irradiation unit that is arranged on one side of the anti-counterfeit medium when the anti-counterfeit medium is arranged, and irradiates the electromagnetic wave, An anti-counterfeit medium that is provided on the irradiation unit side or on the opposite side of the irradiation unit, and the anti-counterfeit medium is observed;
  • the anti-counterfeit medium authenticity judgment characterized in that the position of the anti-counterfeit medium can be changed so that the light emitting layer side and the selective transmission layer side of the anti-protection medium face the electromagnetic wave irradiation part.
  • the authenticity determination device for anti-counterfeit medium has the above-described configuration, so that it is possible to irradiate electromagnetic waves to the light emitting layer side and the selective transmission layer side of the anti-counterfeit medium described above. Therefore, the anti-counterfeit medium authenticity determination method described above can be performed using the anti-counterfeit medium authenticity determination apparatus of the present invention.
  • ultraviolet rays refer to electromagnetic waves having a wavelength of less than 400 nm.
  • the ultraviolet region means a region having a wavelength of less than 400 nm.
  • Visible light refers to electromagnetic waves (light) having a wavelength in the range of 400 nm to 700 nm.
  • the visible light region is a region having a wavelength of 400 nm to 700 nm.
  • Infrared rays refer to electromagnetic waves having a wavelength exceeding 700 nm.
  • the infrared region means a region having a wavelength exceeding 700 nm.
  • A. Method for determining authenticity of anti-counterfeit medium is an electromagnetic wave having a specific wavelength in a wavelength range from an ultraviolet region to an infrared region that is laminated on the selective transmission layer and the selective transmission layer.
  • Selective permeability having a light emitting layer containing a phosphor that absorbs and emits another electromagnetic wave having a wavelength different from that of the electromagnetic wave, and the selective transmission layer absorbs or reflects the electromagnetic wave and transmits the other electromagnetic wave.
  • the anti-counterfeit medium is prepared, the anti-counterfeit medium is arranged so that the observer faces the light-emitting layer side or the selective transmission layer side of the anti-counterfeit medium, and the light-emitting layer of the anti-counterfeit medium
  • the authenticity of the anti-counterfeit medium is determined using a change in the form of the other electromagnetic wave observed by the observer by irradiating the electromagnetic wave on the side and the selective transmission layer side. It is a method to collect.
  • the change in the form of other electromagnetic waves observed by the observer is when the electromagnetic wave is irradiated on the light emitting layer side of the anti-counterfeit medium and when the electromagnetic wave is irradiated on the selective transmission layer side of the anti-counterfeit medium It means that other electromagnetic wave forms observed by the observer are different.
  • the change of the form of other electromagnetic waves includes not only the change visually observed by the observer but also the change observed by the observer using an ultraviolet or infrared detector.
  • the other electromagnetic waves when the other electromagnetic waves are visible light, for example, the presence or absence of a visible light emitting region, the change in the shape of the visible light emitting region pattern, Examples include color change.
  • Examples of the change in the form of other electromagnetic waves include, for example, the presence or absence of an ultraviolet or infrared light emitting region, the change in the shape of the pattern of the ultraviolet or infrared light emitting region, etc. be able to.
  • the electromagnetic wave is irradiated on the light emitting layer side of the anti-counterfeit medium, and when the electromagnetic wave is irradiated on the selective transmission layer side of the anti-counterfeit medium, the light emission region of other electromagnetic waves observed by the observer is left and right.
  • the same shape is observed only by different symmetry, that is, when the emission region of other electromagnetic waves is observed through the selective transmission layer side, it is not included in the change in the form of other electromagnetic waves. .
  • the determination method of the anti-counterfeit medium of the present invention has three modes depending on the positional relationship between the observation position of the observer, the anti-counterfeit medium, and the irradiation position of ultraviolet rays or infrared rays.
  • each aspect will be described.
  • the authenticity determination method of the forgery prevention medium of this aspect is the above-mentioned by absorbing electromagnetic waves having a specific wavelength in the wavelength region from the ultraviolet region to the infrared region, which is laminated on the selective transmission layer and the selective transmission layer.
  • Forgery prevention having a light emitting layer containing a phosphor that emits another electromagnetic wave having a wavelength different from that of the electromagnetic wave, and the selective transmission layer absorbs or reflects the electromagnetic wave and transmits the other electromagnetic wave.
  • a medium is prepared, the anti-counterfeit medium is arranged so that an observer faces the light-emitting layer side or the selective transmission layer side of the anti-counterfeit medium, the light-emitting layer side and the selection of the anti-counterfeit medium
  • the authenticity of the anti-counterfeit medium is determined using a change in the form of the other electromagnetic wave observed by the observer. .
  • FIG. 1 is a schematic cross-sectional view showing an example of an anti-counterfeit medium used in this embodiment.
  • An anti-counterfeit medium 1 shown in FIG. 1 has a selective transmission layer 2 and a light emitting layer 3 laminated on the selective transmission layer 2.
  • the selective transmission layer 2 shown in FIG. 1 absorbs or reflects ultraviolet light L1 and transmits visible light L2, as shown in FIGS.
  • FIG. 1 shows an example in which the forgery prevention medium 1 has a single selective transmission layer 2 and a light emitting layer 3 is laminated on the entire surface of the selective transmission layer 2.
  • FIGS. 3 (a) to 3 (d) are schematic views showing an example of a method for determining the authenticity of the forgery prevention medium according to this embodiment.
  • 2A to 2D and FIGS. 3A to 3D show the case where the forgery prevention medium 1 shown in FIG. 1 is used.
  • FIGS. 2A and 2C the case where the anti-counterfeit medium 1 is arranged so that the viewer A faces the light emitting layer 3 side of the anti-counterfeit medium 1 will be described. In this case, first, as illustrated in FIG.
  • the light source 10 is used to irradiate the light emitting layer 3 side of the forgery prevention medium 1 with ultraviolet rays L1.
  • the ultraviolet ray L1 is absorbed by the phosphor contained in the light emitting layer 3, and visible light L2 is emitted from the phosphor.
  • a part of the visible light L2 is emitted from the light emitting layer 3 to the viewer A side and is observed by the viewer A. Therefore, from the viewer A, as shown in FIG. 2B, the region where the light emitting layer is formed in the anti-counterfeit medium 1, that is, the entire surface of the anti-counterfeit medium 1 is observed as the light emitting region of the visible light L2. .
  • the light source 10 is used to irradiate the selective transmission layer 2 side of the anti-counterfeit medium 1 with ultraviolet rays L ⁇ b> 1.
  • the ultraviolet ray L1 is absorbed or reflected by the selective transmission layer 2, it is not absorbed by the phosphor contained in the light emitting layer 3. Therefore, no visible light is emitted from the phosphor. Therefore, from the observer A, as shown in FIG. 2D, the above-described visible light emission region in the forgery prevention medium 1 is not observed.
  • the region where the light emitting layer is formed in the forgery prevention medium 1, that is, the entire surface of the forgery prevention medium 1 is observed as the light emission region of the visible light L2.
  • the light source 10 is used to irradiate the selective transmission layer 2 side of the anti-counterfeit medium 1 with ultraviolet rays L ⁇ b> 1.
  • the ultraviolet ray L1 is absorbed or reflected by the selective transmission layer 2, it is not absorbed by the phosphor contained in the light emitting layer 3. Therefore, no visible light is emitted from the phosphor. Therefore, from the viewer A, as shown in FIG. 3D, the visible light emission region is not observed on the entire surface of the forgery prevention medium 1.
  • information such as a light-emitting image used for authenticity determination is different depending on the observation direction or the irradiation direction of electromagnetic waves such as illumination light for reproduction. It is not envisaged to use something that changes.
  • the anti-counterfeit medium is arranged so that an observer faces the light emitting layer side or the selective transmission layer side of the anti-counterfeit medium, By irradiating the electromagnetic wave on the light emitting layer side and irradiating the electromagnetic wave on the selective transmission layer side by irradiating the electromagnetic wave on the light emitting layer side and the selective transmission layer side of the anti-counterfeit medium.
  • the form of other electromagnetic waves observed by the observer can be changed. Therefore, the authenticity determination of the anti-counterfeit medium can be performed at a high level by using the change in the form of the other electromagnetic waves.
  • the anti-counterfeit medium used in this embodiment includes a selective transmission layer and a light emitting layer that is laminated on the selective transmission layer and contains a phosphor that absorbs electromagnetic waves and emits other electromagnetic waves.
  • the layer absorbs or reflects the electromagnetic wave and has selective permeability to transmit the other electromagnetic wave.
  • the selective transmission layer is used by being laminated with a light emitting layer, and absorbs or reflects electromagnetic waves absorbed by the phosphor contained in the light emitting layer and emits light from the phosphor. It has selective permeability to transmit electromagnetic waves.
  • the transmittance of the other electromagnetic wave from the phosphor in the selective transmission layer is such that when the electromagnetic wave is irradiated on the light emitting layer side of the anti-counterfeit medium, the observer observes the other electromagnetic wave through the selective transmission layer. Can be selected as appropriate according to the use of the anti-counterfeit medium, the type of phosphor, and the like.
  • the transmittance of the other electromagnetic wave from the phosphor in the selective transmission layer is preferably 10% or more, particularly preferably 50% or more. This is because when the transmittance of other electromagnetic waves from the phosphor is too low, it may be difficult to observe the light emitted from the light emitting layer through the selective transmission layer.
  • permeability of the other electromagnetic waves of the fluorescent substance in a selective transmission layer it can measure by measuring the spectral transmission factor of the selective transmission layer in the wavelength which other electromagnetic waves have using a common spectrometer.
  • the permselective layer may be composed of a single layer or may be formed on a support substrate. Hereinafter, each case will be described.
  • the selective transmission layer 2 is used as a supporting substrate for the light emitting layer 3 as shown in FIG. It has the function of.
  • the resin used for the selective transmission layer is not particularly limited as long as it can exhibit a desired selective permeability, and can be appropriately selected according to the type of the phosphor.
  • Examples of the resin used for the selectively permeable layer include various resins such as polyethylene terephthalate (PET), polyvinyl chloride (PVC), and polypropylene (PP).
  • the ultraviolet absorber examples include known compounds, and examples thereof include the ultraviolet absorbers described in JP-A Nos. 2014-117927 and 2007-015196.
  • the content of the ultraviolet absorber is not particularly limited as long as it is within a range in which desired ultraviolet absorption can be imparted to the selective permeability, for example, selective transmission. In the layer, it is preferably in the range of 1% by mass to 25% by mass, particularly in the range of 5% by mass to 15% by mass. This is because if the content of the ultraviolet absorber is too small, it may be difficult to exhibit the desired selective permeability. If the content of the ultraviolet absorber is too large, the transparency of the selective transmission layer is lowered. Because there is a possibility.
  • examples of the infrared absorber include known compounds, and examples thereof include the infrared absorber described in JP-A-2007-015196.
  • the content of the infrared absorber is not particularly limited as long as it is within a range in which the desired infrared absorption can be imparted to the selective permeability. In the layer, it is preferably in the range of 1% by mass to 25% by mass, particularly in the range of 5% by mass to 15% by mass. This is because if the content of the infrared absorber is too small, it may be difficult to exhibit the desired selective permeability. If the content of the infrared absorber is too large, the transparency of the selective transmission layer is lowered. Because there is a possibility.
  • the selective transmission layer contains an ultraviolet absorber and an infrared absorber
  • the selective transmission layer is appropriately adjusted so that the selective transmission layer has a desired selective permeability.
  • the selective transmission layer a commercially available resin film, ultraviolet absorbing film, ultraviolet reflecting film, infrared absorbing film, infrared reflecting film, or the like can be used.
  • the thickness of the permselective layer is not particularly limited as long as it can exhibit desired permselectivity and can be supported by the light emitting layer, and can be appropriately selected according to the use of the anti-counterfeit medium. it can. For example, it is preferably in the range of 0.3 ⁇ m to 500 ⁇ m, more preferably in the range of 1 ⁇ m to 100 ⁇ m, particularly in the range of 5 ⁇ m to 50 ⁇ m.
  • the support substrate is usually contained in the light emitting layer.
  • One that transmits electromagnetic waves absorbed by the phosphor and transmits other electromagnetic waves emitted from the phosphor, that is, one that does not have selective permeability is used.
  • FIG. 4 is a schematic sectional view showing another example of the forgery prevention medium used in this embodiment.
  • FIGS. 5A and 5B are a schematic cross-sectional view and a schematic plan view showing another example of the forgery prevention medium used in this embodiment.
  • FIG. 5A corresponds to a cross section taken along line XX of FIG. In FIG.
  • FIGS. 5A and 5B show an example in which the selective transmission layer 2 is formed in a triangular and circular pattern.
  • FIGS. 6A and 6B are a schematic sectional view and a schematic plan view showing another example of the forgery prevention medium used in this embodiment.
  • FIG. 6A corresponds to a cross section taken along line XX of FIG.
  • FIG. 6B a region where the selectively transmissive layer 2 is formed is indicated by a broken line.
  • 6A and 6B show an example in which the selective transmission layer 2 is formed in a triangular and circular pattern, and the light emitting layer 3 is formed in a circular and square pattern. Yes.
  • the pattern of the selective transmission layer can be appropriately selected according to the use of the forgery prevention medium, and is not particularly limited. , Photographs, designs, trademarks, bar coats, QR codes (registered trademark), and the like.
  • the material used for the supporting substrate may be any material that does not have selective permeability, and can be appropriately selected according to the use of the anti-counterfeit medium and the type of phosphor.
  • the selective transmission layer described above contains at least one of an ultraviolet absorber and an infrared absorber and a binder resin, a resin used for the binder resin, a glass substrate, and the like can be given.
  • the supporting substrate has transparency.
  • the average transmittance of the supporting base material in the entire visible light region is preferably 80% or more, particularly 90% or more.
  • the material of the selective transmission layer As the material of the selective transmission layer, the material described in the above-mentioned section “(a) When the selective transmission layer is formed of a single layer” can be used.
  • the thickness of the permselective layer is not particularly limited as long as it can be formed on the support substrate, and can be appropriately selected according to the use of the forgery prevention medium, for example, within the range of 0.3 ⁇ m to 500 ⁇ m, In particular, it is preferably in the range of 1 ⁇ m to 100 ⁇ m, particularly in the range of 5 ⁇ m to 50 ⁇ m.
  • a permselective layer coating solution containing the material of the permselective layer is prepared, and the permselective layer coating solution is used on the supporting substrate.
  • examples thereof include a method of forming a selectively permeable layer by a coating method and a method of forming a selectively permeable layer by a printing method using the above-mentioned selective permeable layer coating solution on a supporting substrate. Since the application method and the printing method can be a general application method and a printing method, description thereof is omitted here.
  • the selective transmission layer may transmit or absorb electromagnetic waves absorbed by the phosphor contained in the second light emitting layer. It may be a thing. Moreover, the selective transmission layer normally transmits other electromagnetic waves emitted from the phosphor contained in the second light emitting layer.
  • the permselective layer has a predetermined permselectivity, and the permselectivity is appropriately selected according to the type of phosphor contained in the light emitting layer.
  • the selective transmission layer for example, a layer that absorbs or reflects ultraviolet light and transmits visible light emitted from the phosphor, a layer that absorbs or reflects infrared light and transmits visible light emitted from the phosphor, and absorbs visible light. Or what reflects and permeate
  • the light-emitting layer used in this embodiment is laminated on the selective transmission layer, and absorbs electromagnetic waves having a specific wavelength in the wavelength region from the ultraviolet region to the infrared region, and the electromagnetic wave It contains a phosphor that emits another electromagnetic wave having a different wavelength.
  • the selective transmission layer may be formed and laminated directly on the light emitting layer, or may be laminated via another layer.
  • the light emitting layer should just contain at least any one of the ultraviolet-absorbing fluorescent substance mentioned later as a fluorescent substance, an infrared-absorbing fluorescent substance, and a visible light-absorbing fluorescent substance. You may contain.
  • the phosphor layer is at least one of an ultraviolet-absorbing phosphor that absorbs ultraviolet rays and emits visible light, and an infrared-absorbing phosphor that absorbs infrared rays and emits visible light. It is preferable to contain.
  • the light emitting layer usually has transparency.
  • the transparency of the light emitting layer for example, it is preferable that the average transmittance of the light emitting layer in the entire visible light region is within the range of the average transmittance of the selective transmission layer in the entire visible light region described above.
  • the light emitting layer only needs to be laminated on the selective transmission layer.
  • the light emitting layer 3 may be laminated on the entire surface of the selective transmission layer 2, as shown in FIG. , (B), FIGS. 7 (a), (b), and FIG. 8, the light emitting layer 3 may be formed in a predetermined pattern on the selective transmission layer 2.
  • FIGS. 5A, 5B, 6A, and 6B when the selective transmission layer 2 is formed in a predetermined pattern on the support base 4, light emission is performed.
  • the layer 3 may be formed so as to cover the selective transmission layer 2.
  • FIGS. 7A and 7B are a schematic cross-sectional view and a schematic plan view showing another example of the forgery prevention medium used in this embodiment.
  • FIG. 7A corresponds to a cross section taken along line XX of FIG. 7A and 7B show an example in which the light emitting layer 3 is formed in a star-shaped and crescent-shaped pattern.
  • the anti-counterfeit medium 1 includes a support base 4, a selective transmission layer 2 formed on the entire surface of the support base 4, and a light emitting layer 3 formed in a predetermined pattern on the selective transmission layer 2. The example which has is shown.
  • the pattern of the light emitting layer can be appropriately selected according to the use of the forgery prevention medium, and is not particularly limited, for example, figures, letters, numbers, photographs , Pattern, trademark, bar coat, QR code (registered trademark), and the like.
  • the phosphor used in the light emitting layer is not particularly limited as long as it absorbs an electromagnetic wave having a specific wavelength in the wavelength region from the ultraviolet region to the infrared region and emits another electromagnetic wave having a wavelength different from the above electromagnetic wave.
  • examples of such phosphors include ultraviolet absorbing phosphors, visible light absorbing phosphors, and infrared absorbing phosphors.
  • the ultraviolet absorbing phosphor is a phosphor that absorbs ultraviolet rays.
  • the ultraviolet-absorbing phosphor include those that absorb ultraviolet rays and emit ultraviolet rays having a shorter wavelength than the ultraviolet rays, those that absorb ultraviolet rays and emit visible light, and those that absorb ultraviolet rays and emit infrared rays. Is mentioned.
  • an ultraviolet absorbing phosphor that absorbs ultraviolet rays and emits visible light is preferable. This is because the anti-counterfeit medium authenticity determination method of the present invention can be easily performed with high security.
  • an ultraviolet absorbing phosphor that absorbs ultraviolet rays and emits visible light
  • a phosphor that absorbs UV-A (within a wavelength range of 315 nm to 380 nm) and emits visible light UV-B (wavelength of 280 nm).
  • phosphors that emit visible light by absorbing UV-C within a wavelength range of 200 nm to 280 nm
  • the visible light emitted from the phosphor can be appropriately selected according to the type of the phosphor.
  • Examples of the ultraviolet-absorbing phosphor include known ones. Specifically, the ultraviolet-excited visible-light-emitting phosphor described in JP2012-011550A, disclosed in Japanese Patent No. 5573469.
  • a dichroic phosphor can be used.
  • visible light having different wavelengths can be emitted using, for example, ultraviolet rays having two different wavelengths.
  • ultraviolet rays having two different wavelengths.
  • the infrared absorbing phosphor is a phosphor that absorbs infrared rays.
  • the infrared-absorbing phosphor include those that absorb infrared rays and emit visible light, those that absorb infrared rays and emit infrared rays having longer wavelengths than the infrared rays, and those that absorb infrared rays and emit shorter infrared rays. Those that emit infrared rays.
  • an infrared absorbing phosphor that absorbs infrared rays and emits visible light is particularly preferable. This is because the anti-counterfeit medium authenticity determination method of the present invention can be easily performed with high security.
  • An infrared-absorbing phosphor that absorbs infrared rays and emits visible light is also called, for example, an upconversion material. For example, it absorbs near-infrared light of 800 nm and emits green visible light of around 530 nm.
  • the excitation wavelength is appropriately selected depending on the phosphor, and the visible light emitted from the phosphor can be appropriately selected according to the type of the phosphor.
  • the infrared-absorbing phosphor known ones can be mentioned. Specifically, the infrared-excited visible light-emitting phosphor described in JP 2012-011550 A, Patent No. 4276864, Patent No. 4498825, and the like. And phosphors containing rare earth elements that perform up-conversion as described in No. 1.
  • the visible light absorbing phosphor is a phosphor that absorbs visible light and emits infrared light.
  • known ones can be exemplified.
  • a plurality of types of phosphors may be used.
  • the light emitting layer usually contains a binder resin.
  • a binder resin used for the light emitting layer, a known resin can be used, and thus the description thereof is omitted here.
  • the thickness of the light emitting layer can be appropriately selected according to the use of the forgery prevention medium, and is not particularly limited, but is preferably in the range of 0.3 ⁇ m to 100 ⁇ m, for example.
  • the method for forming the light emitting layer is not particularly limited as long as the light emitting layer can be laminated on the selective transmission layer.
  • a coating solution for forming a light emitting layer containing a material for the light emitting layer is used. Examples thereof include a method for forming a light emitting layer on the selectively permeable layer and a method for forming a light emitting layer on the selectively permeable layer by a printing method using a light emitting layer forming coating solution.
  • the light emitting layer may further have a function as a hologram.
  • a hologram specifically, when a hologram is recorded in a hologram recording resin and a hologram is recorded, a light emitting layer having a hologram function is obtained.
  • the hologram recording resin those used for known holograms can be used.
  • the anti-counterfeit medium 1 used in this embodiment is formed on the surface side opposite to the light-emitting layer 3 side described above.
  • the second light-emitting layer 5 containing a phosphor that absorbs an electromagnetic wave having a specific wavelength in the wavelength region from the ultraviolet region to the infrared region and emits another electromagnetic wave having a wavelength different from the electromagnetic wave. It may be. Since the change in the form of other electromagnetic waves depending on the irradiation direction of the electromagnetic waves on the anti-counterfeit medium can be made more complicated, the authenticity determination of the anti-counterfeit medium can be performed at a higher level.
  • FIGS. 9A to 9C are a schematic cross-sectional view and a schematic plan view showing another example of the forgery prevention medium used in this embodiment.
  • FIG. 9A corresponds to a cross section taken along line XX in FIGS. 9B and 9C.
  • FIG. 9B is a schematic plan view of the anti-counterfeit medium 1 viewed from the light emitting layer 3 side
  • FIG. 9C is a schematic plan view of the anti-counterfeit medium 1 viewed from the second light emitting layer 5 side.
  • 9A to 9C show an example in which the light emitting layer 3 is formed in a star-shaped and crescent-shaped pattern, and the second light-emitting layer 5 is formed in a circular and square pattern. Yes.
  • FIG. 9A to 9C show an example in which the light emitting layer 3 is formed in a star-shaped and crescent-shaped pattern, and the second light-emitting layer 5 is formed in a circular and square pattern. Yes.
  • FIG. 9A to 9C
  • the anti-counterfeit medium 1 includes a support base 4, a selective transmission layer 2 formed on the entire surface of the support base 4, a light emitting layer 3 formed in a predetermined pattern on the selective transmission layer 2,
  • the second light emitting layer 5 is laminated on the surface of the support base 4 opposite to the light emitting layer 2 side is shown.
  • the phosphor contained in the second light emitting layer may be the same type of phosphor as that contained in the light emitting layer, or may be a different type of phosphor.
  • the second light emitting layer is formed on the surface of the selective layer opposite to the light emitting layer side in the forgery prevention medium.
  • the details of the second light-emitting layer can be the same as the contents described in the section “(2) Light-emitting layer” described above, and thus the description thereof is omitted here.
  • the anti-counterfeit medium is not particularly limited as long as it has the above-described laminated body of the selective transmission layer and the light emitting layer, and a necessary configuration can be appropriately selected and added.
  • the anti-counterfeit medium is usually provided with a protective layer on the outer side of the laminate of the selective transmission layer and the light emitting layer.
  • Any protective layer may be used as long as it does not block electromagnetic waves used in the authenticity determination method of the anti-counterfeit medium and other electromagnetic waves, and examples thereof include a transparent substrate.
  • a transparent base material it can select and use from what was demonstrated by the term of the support base material mentioned above.
  • the forgery prevention medium may be provided with a print layer that can be observed under visible light.
  • the printed layer is usually provided so as not to overlap the region where the laminate of the selective transmission layer and the light emitting layer is provided.
  • the coloring layer containing coloring materials, such as a pigment can be mentioned, for example.
  • Base material for anti-counterfeit medium in this aspect, it usually has a base material for anti-counterfeit medium for supporting the laminate of the selective transmission layer and the light emitting layer described above.
  • the base material for anti-counterfeit medium can be appropriately selected according to the type of anti-counterfeit medium.
  • the base material for anti-counterfeit medium includes a card base material. Can do.
  • the anti-counterfeit medium is a securities, banknote, or identification card
  • examples of the anti-counterfeit medium base material include base materials used for these.
  • the laminate of the selective transmission layer and the light emitting layer described above may be disposed on the entire surface of the anti-counterfeit medium substrate, or may be disposed on a part of the anti-counterfeit medium substrate.
  • the anti-counterfeit medium authenticity determination method of this aspect is such that the observer and the light-emitting layer side or the selective transmission layer side of the anti-counterfeit medium face each other using the above-described anti-counterfeit medium.
  • the anti-counterfeit medium is disposed, and the electromagnetic wave is irradiated on the light emitting layer side and the selective transmission layer side of the anti-counterfeit medium, thereby using the change in the form of other electromagnetic waves observed by the observer. This is a method for determining the authenticity of an anti-counterfeit medium.
  • the electromagnetic wave having a specific wavelength absorbed by the phosphor is ultraviolet, and the other electromagnetic wave emitted from the phosphor is visible light.
  • the present invention is not limited to this. Absent.
  • the anti-counterfeit medium 1 includes the selective transmission layer 2 composed of a single layer and the light emitting layer laminated on the entire surface of the selective transmission layer 2, FIG. As shown in FIGS. 3A to 3D and FIGS. 3A to 3D, the visible light L2 is emitted on the entire surface of the anti-counterfeit medium 1 as a change in the form of the visible light L2 observed by the observer A.
  • the authenticity of the forgery prevention medium 1 can be determined using the presence or absence of the area.
  • the anti-counterfeit medium 1 shown in FIG. 4 is used, the anti-counterfeit medium is obtained by using the presence or absence of a visible light emitting region on the entire surface of the anti-counterfeit medium as a change in the form of visible light observed by the observer. Can be verified.
  • the anti-counterfeit medium 1 has a selective transmission layer 2 composed of a single layer and a light emitting layer 3 laminated in a predetermined pattern on the selective transmission layer 2.
  • FIGS. 11A to 11D and 12A to 12D are schematic views showing another example of the authenticity determination method for the forgery prevention medium according to this embodiment.
  • FIGS. 11A to 11D and 12A to 12D are schematic views showing another example of the authenticity determination method for the forgery prevention medium according to this embodiment.
  • FIGS. 11A to 11D and 12A to 12D are schematic views showing another example of the authenticity determination method for the forgery prevention medium according to this embodiment.
  • FIGS. 11A to 11D and 12A to 12D are schematic views showing another example of the authenticity determination method for the forgery prevention medium according to this embodiment.
  • FIGS. 11A to 11D and 12A to 12D are schematic views showing another example of the authenticity determination method for the forgery prevention medium according to this embodiment.
  • the light source 10 is used to irradiate the light emitting layer 3 side of the anti-counterfeit medium 1 with ultraviolet rays L1.
  • the ultraviolet ray L1 is absorbed by the phosphor contained in the light emitting layer 3, and visible light L2 is emitted from the phosphor. Further, a part of the visible light L2 is emitted from the light emitting layer 3 to the viewer A side and is observed by the viewer A.
  • the ultraviolet ray L1 is absorbed or reflected by the selective transmission layer 2. Therefore, from the viewer A, as shown in FIG.
  • the region where the light emitting layer is formed in the predetermined pattern in the forgery prevention medium 1 is the light emitting region of the visible light L2 having the predetermined pattern.
  • the light source 10 is used to irradiate the selective transmission layer 2 side of the forgery prevention medium 1 with ultraviolet rays L1.
  • the ultraviolet ray L1 is absorbed or reflected by the selective transmission layer 2, it is not absorbed by the phosphor contained in the light emitting layer 3. Therefore, no visible light is emitted from the phosphor. Therefore, from the observer A, as shown in FIG. 11D, the above-described predetermined pattern of visible light emission region in the forgery prevention medium 1 is not observed.
  • the light source 10 is used to irradiate the light emitting layer 3 side of the anti-counterfeit medium 1 with ultraviolet rays L1.
  • the ultraviolet ray L1 is absorbed by the phosphor contained in the light emitting layer 3, and visible light L2 is emitted from the phosphor.
  • the visible light L2 passes through the selective transmission layer 2 and is emitted to the viewer A side, and is observed by the viewer A.
  • the ultraviolet ray L1 is absorbed or reflected by the selective transmission layer 2. Therefore, from the viewer A, as shown in FIG. 12B, the region where the light emitting layer is formed in the predetermined pattern in the forgery prevention medium 1 is the light emitting region of the visible light L2 having the predetermined pattern. Observed.
  • the light source 10 is used to irradiate the selective transmission layer 2 side of the anti-counterfeit medium 1 with ultraviolet rays L ⁇ b> 1.
  • the ultraviolet ray L1 is absorbed or reflected by the selective transmission layer 2, it is not absorbed by the phosphor contained in the light emitting layer 3. Therefore, no visible light is emitted from the phosphor. Accordingly, as shown in FIG. 12D, the viewer A does not observe the patterned visible light emission region in the forgery prevention medium 1.
  • the anti-counterfeit medium 1 shown in FIG. 7 when used, as shown in FIGS. 11 (a) to 11 (d) and FIGS. 12 (a) to 12 (d), changes in the form of visible light observed by the observer
  • the authenticity of the anti-counterfeit medium 1 can be determined using the presence or absence of a predetermined pattern of visible light emission region in the anti-counterfeit medium.
  • the anti-counterfeit medium 1 shown in FIG. 8 as the change in the form of visible light observed by the observer, using the presence or absence of a predetermined pattern of visible light emission region in the anti-counterfeit medium, The authenticity of the forgery prevention medium 1 can be determined.
  • the anti-counterfeit medium 1 includes a support base 4, a selective transmission layer 2 formed in a predetermined pattern on the support base 4, and a selection.
  • a method for determining the authenticity of an anti-counterfeit medium when the light-emitting layer 3 laminated on the entire surface of the support base 4 is covered so as to cover the transmission layer 2 will be described.
  • FIGS. 13A to 13D and FIGS. 14A to 14D are schematic views showing another example of the authenticity determination method for the forgery prevention medium according to this embodiment. A case where the anti-counterfeit medium 1 is arranged so that the viewer A and the light-emitting layer 3 side of the anti-counterfeit medium 1 face each other as shown in FIGS.
  • the region where the light emitting layer is formed in the anti-counterfeit medium 1, that is, the entire surface of the anti-counterfeit medium 1 is observed as the light emitting region of the visible light L2.
  • the light source 10 is used to irradiate the selective transmission layer 2 side of the anti-counterfeit medium 1 with ultraviolet rays L1.
  • the ultraviolet light L1 is absorbed or reflected by the selective transmission layer 2, and thus is not absorbed by the phosphor contained in the light emitting layer 3. Therefore, no visible light is emitted from the phosphor.
  • the ultraviolet light L1 passes through the support base 4 and is absorbed by the phosphor contained in the light emitting layer 3, and visible light L2 is emitted from the phosphor. Further, a part of the visible light L2 is emitted from the light emitting layer 3 to the viewer A side and is observed by the viewer A. Therefore, from the viewer A, as shown in FIG. 13 (d), an area excluding the area where the selective transmission layer is formed in a predetermined pattern in the forgery prevention medium 1 has a predetermined pattern. It is observed as a light emission region of visible light L2.
  • the light source 10 is used to irradiate the light emitting layer 3 side of the anti-counterfeit medium 1 with ultraviolet rays L1.
  • the ultraviolet ray L1 is absorbed by the phosphor contained in the light emitting layer 3, and visible light L2 is emitted from the phosphor.
  • a part of the visible light L2 passes through the selective transmission layer 2 and the support base 4 and is emitted to the viewer A side, and is observed by the viewer A.
  • the ultraviolet ray L1 is absorbed or reflected by the selective transmission layer 2. Therefore, from the viewer A, as shown in FIG. 14B, the region where the light emitting layer is formed in the anti-counterfeit medium 1, that is, the entire surface of the anti-counterfeit medium 1 is observed as the light emitting region of the visible light L2. .
  • the light source 10 is used to irradiate the selective transmission layer 2 side of the anti-counterfeit medium 1 with ultraviolet rays L ⁇ b> 1.
  • the ultraviolet light L1 is absorbed or reflected by the selective transmission layer 2, and thus is not absorbed by the phosphor contained in the light emitting layer 3. Therefore, no visible light is emitted from the phosphor.
  • the ultraviolet light L1 passes through the support base 4 and is absorbed by the phosphor contained in the light emitting layer 3, and visible light L2 is emitted from the phosphor.
  • part of the visible light L ⁇ b> 2 passes through the support base 4 and is emitted to the viewer A side, and is observed by the viewer A. Therefore, from the viewer A, as shown in FIG. 14 (d), an area excluding the area where the selective transmission layer is formed in a predetermined pattern in the forgery prevention medium 1 has a predetermined pattern. It is observed as a light emission region of visible light L2.
  • the anti-counterfeit medium 1 includes a support base 4, a selective transmission layer 2 formed in a predetermined pattern on the support base 4, and a selection.
  • a method for determining the authenticity of an anti-counterfeit medium when the light-emitting layer 3 laminated in a pattern on the support base material 4 so as to cover the transmission layer 2 will be described.
  • 15 (a) to 15 (d) and FIGS. 16 (a) to 16 (d) are schematic views showing another example of the authenticity determination method of the forgery prevention medium according to this embodiment.
  • the light source 10 is used to irradiate the anti-counterfeit medium 1 to the light emitting layer 3 side with ultraviolet rays L1.
  • the ultraviolet ray L1 is absorbed by the phosphor contained in the light emitting layer 3, and visible light L2 is emitted from the phosphor. Further, a part of the visible light L2 is emitted from the light emitting layer 3 to the viewer A side and is observed by the viewer A.
  • the ultraviolet ray L1 passes through the support substrate 4. Therefore, from the viewer A, as shown in FIG. 15B, the region where the light emitting layer is formed in the predetermined pattern in the forgery prevention medium 1 is the light emitting region of the visible light L2 having the predetermined pattern. Observed.
  • the light source 10 is used to irradiate the selective transmission layer 2 side of the forgery prevention medium 1 with ultraviolet rays L ⁇ b> 1.
  • the ultraviolet light L1 is absorbed or reflected by the selective transmission layer 2, and therefore the phosphor contained in the light emitting layer 3 Not absorbed. Therefore, no visible light is emitted from the phosphor.
  • the ultraviolet light L1 passes through the support base 4 and is absorbed by the phosphor contained in the light-emitting layer 3, and fluorescent Visible light L2 is emitted from the body. Further, a part of the visible light L2 is emitted to the viewer A side, and is observed by the viewer A.
  • the ultraviolet ray L1 passes through the support base 4 and is emitted to the viewer A side, but the ultraviolet ray L1 is not observed by the viewer A. Therefore, from the observer A, as shown in FIG. 15D, the selective transmission layer is formed in a predetermined pattern from the region where the light emitting layer is formed in the predetermined pattern in the forgery prevention medium 1. A region excluding the existing region is observed as a light emission region of visible light L2 having a predetermined pattern.
  • the light source 10 is used to irradiate the light emitting layer 3 side of the forgery prevention medium 1 with ultraviolet rays L1.
  • the ultraviolet ray L1 is absorbed by the phosphor contained in the light emitting layer 3, and visible light L2 is emitted from the phosphor.
  • the visible light L2 passes through the support base material 4 from the light emitting layer 3 and is emitted to the viewer A side, and is observed by the viewer A.
  • the ultraviolet ray L1 passes through the support base 4 but the ultraviolet ray L1 is not observed by the observer A. Therefore, from the viewer A, as shown in FIG. 16B, the region where the light emitting layer is formed in the predetermined pattern in the forgery prevention medium 1 is the light emitting region of the visible light L2 having the predetermined pattern. Observed.
  • FIG. 16B the region where the light emitting layer is formed in the predetermined pattern in the forgery prevention medium 1 is the light emitting region of the visible light L2 having the predetermined pattern.
  • the light source 10 is used to irradiate the selective transmission layer 2 side of the anti-counterfeit medium 1 with ultraviolet rays L ⁇ b> 1.
  • the ultraviolet light L1 is absorbed or reflected by the selective transmission layer 2, and therefore the phosphor contained in the light emitting layer 3 Not absorbed. Therefore, no visible light is emitted from the phosphor.
  • the ultraviolet ray L1 passes through the support base 4 and is absorbed by the phosphor contained in the light emitting layer 3, and from the phosphor.
  • Visible light L2 is emitted. Moreover, a part of visible light L2 permeate
  • the anti-counterfeit medium has a selective transmission layer 2 composed of a single layer, and a pattern on the selective transmission layer 2.
  • a method for determining the authenticity of an anti-counterfeit medium having the light emitting layer 3 laminated on the surface and the second light emitting layer 5 laminated on the surface of the selective transmission layer 2 opposite to the light emitting layer side will be described. To do.
  • FIGS. 17A to 17D and FIGS. 18A to 18D are schematic views showing another example of the authenticity determination method for the forgery prevention medium according to this embodiment.
  • 17 (a) to (d) and FIGS. 18 (a) to (d) show examples in which the second light-emitting layer contains a phosphor that absorbs ultraviolet light L1 and emits visible light L3. Yes. Further, an example in which the visible light L2 and the visible light L3 have different wavelengths is shown.
  • FIGS. 1 A case where the anti-counterfeit medium 1 is arranged so that the viewer A and the light-emitting layer 3 side of the anti-counterfeit medium 1 face each other will be described as shown in FIGS. In this case, first, as shown in FIG.
  • the light source 10 is used to irradiate the light emitting layer 3 side of the forgery prevention medium 1 with ultraviolet rays L1.
  • the ultraviolet ray L1 is absorbed by the phosphor contained in the light emitting layer 3.
  • visible light L2 is emitted from the phosphor.
  • a part of the visible light L2 is emitted to the viewer A side and observed by the viewer A.
  • the ultraviolet ray L1 is absorbed or reflected by the selective transmission layer 2. Therefore, from the viewer A, as shown in FIG.
  • the region where the light emitting layer is formed in the predetermined pattern in the forgery prevention medium 1 is the light emitting region of the visible light L2 having the predetermined pattern. Observed.
  • the light source 10 is used to irradiate the forgery prevention medium 1 with the ultraviolet light L ⁇ b> 1 on the second light emitting layer 5 side.
  • the ultraviolet light L1 is absorbed by the phosphor contained in the second light emitting layer 5, and visible light L3 is emitted from the phosphor. Further, a part of the visible light L3 is emitted to the observer A side and is observed by the observer A.
  • the ultraviolet ray L1 is absorbed or reflected by the selective transmission layer 2. Therefore, from the viewer A, as shown in FIG. 17D, the region where the second light emitting layer is formed in a predetermined pattern in the forgery prevention medium 1 emits visible light L3 having a predetermined pattern. Observed as a region.
  • the light source 10 is used to irradiate the light emitting layer 3 side of the anti-counterfeit medium 1 with ultraviolet rays L1.
  • the ultraviolet light L1 is absorbed by the phosphor contained in the light emitting layer 3. Further, visible light L2 is emitted from the phosphor.
  • the visible light L2 passes through the selective transmission layer 2 and the second light emitting layer 5 and is emitted to the viewer A side and is observed by the viewer A.
  • the ultraviolet ray L1 is absorbed or reflected by the selective transmission layer 2. Therefore, from the viewer A, as shown in FIG. 18B, the region where the light emitting layer is formed in the predetermined pattern in the forgery prevention medium 1 is the light emitting region of the visible light L2 having the predetermined pattern. Observed.
  • the light source 10 is used to irradiate the forgery prevention medium 1 with the ultraviolet light L ⁇ b> 1 on the second light emitting layer 5 side.
  • the ultraviolet light L1 is absorbed by the phosphor contained in the second light emitting layer 5, and visible light L3 is emitted from the phosphor. Further, a part of the visible light L3 is emitted to the observer A side and is observed by the observer A.
  • the ultraviolet ray L1 is absorbed or reflected by the selective transmission layer 2 in a region where the second light emitting layer is not formed. Therefore, from the viewer A, as shown in FIG. 18D, the region where the second light emitting layer is formed in a predetermined pattern in the forgery prevention medium 1 emits visible light L3 having a predetermined pattern. Observed as a region.
  • the anti-counterfeit medium 1 shown in FIGS. 9A to 9D when used, it is observed by an observer as shown in FIGS. 17A to 17D and FIGS. 18A to 18D.
  • the change in the form of visible light it is possible to determine the authenticity of the anti-counterfeit medium 1 by using the change in the shape of the light emitting region pattern of the anti-counterfeit medium 1 and the change in the color of visible light.
  • the change in the shape of the visible light emission region and the change in the color of visible light are used as the change in the form of visible light observed by the observer. The authenticity of the forgery prevention medium can be determined.
  • the method of determining the authenticity of the anti-counterfeit medium according to this aspect can be applied to various methods of determining the authenticity of anti-counterfeit media such as ID cards, cash cards, passports, banknotes, securities, and certificates.
  • the method for determining the authenticity of the anti-counterfeit medium according to the second aspect includes the selective transmission layer and the selective transmission layer that are stacked on the selective transmission layer and absorb electromagnetic waves having a specific wavelength in the wavelength region from the ultraviolet region to the infrared region. Forgery prevention having a light emitting layer containing a phosphor that emits another electromagnetic wave having a wavelength different from that of the electromagnetic wave, and the selective transmission layer absorbs or reflects the electromagnetic wave and transmits the other electromagnetic wave.
  • the medium is prepared, the anti-counterfeit medium is arranged such that the observation position of the observer and the irradiation position of the electromagnetic wave are located on the same surface side of the anti-counterfeit medium, and the light-emitting layer side of the anti-counterfeit medium and By irradiating the electromagnetic wave while changing the position of the anti-counterfeit medium so that the selective transmission layer side faces the irradiation position of the electromagnetic wave, the observer observes the above
  • the authenticity of the anti-counterfeit medium is determined using a change in the form of another electromagnetic wave.
  • FIGS. 19A to 19D are schematic views showing an example of the authenticity determination method of the forgery prevention medium according to this embodiment.
  • 19A to 19D an example using the forgery prevention medium 1 illustrated in FIG. 1 will be described.
  • forgery prevention is performed so that the observation position of the observer A and the irradiation position of the ultraviolet light L1 (position of the light source 10) are located on the light emitting layer 3 side of the forgery prevention medium 1.
  • the medium 1 is arranged.
  • the ultraviolet light L1 is irradiated to the light emitting layer 3 side of the forgery prevention medium 1.
  • FIG. 19A forgery prevention is performed so that the observation position of the observer A and the irradiation position of the ultraviolet light L1 (position of the light source 10) are located on the light emitting layer 3 side of the forgery prevention medium 1.
  • the medium 1 is arranged.
  • the ultraviolet light L1 is irradiated to the light emitting layer 3 side of the forgery prevention medium 1.
  • the viewer A observes the region where the light emitting layer is formed in the anti-counterfeit medium 1, that is, the entire surface of the anti-counterfeit medium 1 as the light emitting region of the visible light L2.
  • the details of the optical paths of the ultraviolet light L1 and the visible light L2 are the same as those described with reference to FIG.
  • the observation position of the observer A and the irradiation position of the ultraviolet light L1 are positioned on the selective transmission layer 2 side of the forgery prevention medium 1.
  • An anti-counterfeit medium 1 is disposed.
  • ultraviolet light L1 is irradiated to the selective transmission layer 2 side of the forgery prevention medium 1.
  • the above-described visible light emission region in the forgery prevention medium 1 is not observed by the observer A.
  • the details of the optical paths of the ultraviolet light L1 and the visible light L2 are the same as those described with reference to FIG.
  • the observer is irradiated with the ultraviolet light L1 while changing the position of the anti-counterfeit medium 1 so that the light emitting layer 3 side and the selective transmission layer 2 side of the anti-counterfeit medium 1 are opposed to the irradiation position of the ultraviolet light L1.
  • the authenticity of the forgery prevention medium 1 is determined.
  • the anti-counterfeit medium is arranged using the anti-counterfeit medium so that the observer's observation position and the electromagnetic wave irradiation position are located on the same surface side of the anti-counterfeit medium.
  • the electromagnetic wave was irradiated to the emission layer side.
  • the form of other electromagnetic waves observed by the observer can be changed depending on the case and the case where the electromagnetic waves are irradiated on the selective transmission layer side. Therefore, the authenticity determination of the anti-counterfeit medium can be performed at a high level by using the change in the form of the other electromagnetic waves.
  • the authenticity of the anti-counterfeit medium can be determined using the change in the form of visible light shown in (b) and FIG. Further, when the anti-counterfeit medium 1 shown in FIG. 5 is used, when the positions of the observer, the anti-counterfeit medium, and the ultraviolet irradiation position are set as shown in FIGS. 13A and 14C, FIG. The authenticity of the anti-counterfeit medium can be determined using the change in the form of visible light shown in (b) and FIG. Further, when the anti-counterfeit medium 1 shown in FIG. 6 is used, the position of the observer, the anti-counterfeit medium, and the ultraviolet irradiation position is set as shown in FIGS. 15 (a) and 16 (c).
  • the authenticity of the anti-counterfeit medium can be determined using the change in the form of visible light shown in (b) and FIG. Further, when the anti-counterfeit medium 1 shown in FIG. 9 is used, when the observer, the anti-counterfeit medium, and the irradiation position of the ultraviolet rays are in the positional relationship shown in FIGS. 17 (a) and 18 (c), FIG. The authenticity of the anti-counterfeit medium can be determined using the change in the form of visible light shown in (b) and FIG.
  • the method of determining authenticity of the anti-counterfeit medium according to the present aspect is the method of absorbing electromagnetic waves having a specific wavelength in the wavelength region from the ultraviolet region to the infrared region laminated on the selective transmission layer and the selective transmission layer. Forgery prevention having a light emitting layer containing a phosphor that emits another electromagnetic wave having a wavelength different from that of the electromagnetic wave, and the selective transmission layer absorbs or reflects the electromagnetic wave and transmits the other electromagnetic wave.
  • a medium is prepared, the anti-counterfeit medium is arranged between the observer and the electromagnetic wave irradiation position, and the light-emitting layer side and the selective transmission layer side of the anti-counterfeit medium are opposed to the electromagnetic wave irradiation position.
  • the authenticity of the anti-counterfeit medium is determined using a change in the form of the other electromagnetic wave observed by the observer. It is the method characterized by this.
  • FIGS. 20A to 20D are schematic views showing an example of the authenticity determination method of the forgery prevention medium according to this embodiment.
  • 20A to 20D an example using the forgery prevention medium 1 illustrated in FIG. 1 will be described.
  • forgery prevention is performed so that the light emitting layer 3 of the forgery prevention medium 1 and the light source 10 face each other between the observer A and the irradiation position of the ultraviolet light L1 (position of the light source 10).
  • the medium 1 is arranged.
  • the ultraviolet light L1 is irradiated to the light emitting layer 3 side of the forgery prevention medium 1.
  • the light emitting layer 3 disposed on the entire surface of the anti-counterfeit medium 1 is not observed from the observer A as a visible light emitting region.
  • the details of the optical paths of the ultraviolet light L1 and the visible light L2 are the same as those described with reference to FIG.
  • the selective transmission layer 2 side of the forgery prevention medium 1 and the light source 10 face each other between the observer A and the irradiation position of the ultraviolet light L1 (position of the light source 10).
  • the forgery prevention medium 1 is arranged.
  • ultraviolet rays are irradiated to the selective transmission layer 2 side of the forgery prevention medium 1. At this time, as shown in FIG.
  • the light emitting layer 3 disposed on the entire surface of the forgery prevention medium 1 is observed by the observer A as a visible light emitting region.
  • the details of the optical paths of the ultraviolet light L1 and the visible light L2 are the same as those described with reference to FIG.
  • the observer is irradiated with the ultraviolet light L1 while changing the position of the anti-counterfeit medium 1 so that the light emitting layer 3 side and the selective transmission layer 2 side of the anti-counterfeit medium 1 are opposed to the irradiation position of the ultraviolet light L1.
  • the authenticity of the forgery prevention medium 1 is determined.
  • the anti-counterfeit medium is disposed between the observer and the irradiation position of the electromagnetic wave, and the light-emitting layer side and the selective transmission layer side of the anti-counterfeit medium are the above-described electromagnetic waves.
  • the electromagnetic wave is irradiated to the light emitting layer side by irradiating the electromagnetic wave by changing the position of the anti-counterfeit medium so as to face the irradiation position, and when the electromagnetic wave is irradiated to the selective transmission layer side
  • the form of the other electromagnetic wave observed by the observer can be changed. Therefore, the authenticity determination of the anti-counterfeit medium can be performed at a high level by using the change in the form of the other electromagnetic waves.
  • the anti-counterfeit medium authentication method of this aspect when the anti-counterfeit medium 1 shown in FIG. 1 is used, the observer, the anti-counterfeit medium, and the ultraviolet irradiation position are shown in FIG. In the case of the positional relationship shown in 20 (c), the authenticity of the anti-counterfeit medium can be determined using the change in the form of visible light shown in FIGS. 20 (b) and 20 (d).
  • the anti-counterfeit medium 1 shown in FIG. 7 when the positions of the observer, the anti-counterfeit medium, and the ultraviolet irradiation position are as shown in FIGS. 11 (c) and 12 (a), FIG.
  • the authenticity of the anti-counterfeit medium can be determined using the change in the form of visible light shown in (d) and FIG. Further, when the anti-counterfeit medium 1 shown in FIG. 5 is used, when the positions of the observer, the anti-counterfeit medium, and the ultraviolet irradiation position are as shown in FIGS. 13 (c) and 14 (a), FIG. The authenticity of the anti-counterfeit medium can be determined using the change in the form of visible light shown in (d) and FIG. When the anti-counterfeit medium 1 shown in FIG. 6 is used, when the positions of the observer, the anti-counterfeit medium, and the ultraviolet irradiation position are as shown in FIGS. 15 (c) and 16 (a), FIG.
  • the authenticity determination apparatus for forgery prevention media of this aspect absorbs the electromagnetic waves which have a specific wavelength among the area
  • An arrangement for use in medium authenticity determination where the anti-counterfeit medium is arranged, and an irradiation unit that is arranged on both sides of the anti-counterfeit medium when the anti-counterfeit medium is arranged and irradiates the electromagnetic wave And the irradiation so that the irradiation of the electromagnetic wave from one irradiation unit and the other irradiation unit among the irradiation units arranged on both sides of the anti-counterfeit medium can be switched. And a control unit that controls the forgery unit, and an observation unit that is provided on the one irradiation unit side and that observes the forgery prevention medium when the forgery prevention medium is arranged.
  • FIG. 21 is a schematic diagram illustrating an example of the authenticity determination device for a forgery prevention medium according to this aspect.
  • the anti-counterfeit medium authenticity determination device 30 of this aspect is used for authenticity determination of the anti-counterfeit medium 1 having the selective transmission layer 2 and the light emitting layer 3.
  • the anti-counterfeit medium authenticity determination device 30 is disposed on both sides of the anti-counterfeit medium 1 when the anti-counterfeit medium 1 is disposed, and has a wavelength range from the ultraviolet region to the infrared region.
  • An irradiating unit 32 that irradiates an electromagnetic wave having a specific wavelength, and an observing unit 33 that is provided on the one irradiating unit 32 side and that observes the forgery prevention medium 1 when the forgery prevention medium 1 is disposed. It is a feature. Although not shown, a control unit that controls the irradiation unit so that irradiation of electromagnetic waves from one irradiation unit and the other irradiation unit among the irradiation units arranged on both sides of the forgery prevention medium can be switched. Have.
  • the irradiation unit 32 includes the light source 10. Moreover, the arrangement
  • the observation unit 33 is provided between the forgery prevention medium 1 and one irradiation unit 32.
  • the anti-counterfeit medium authenticity determination device has the above-described configuration, so that it is possible to irradiate each of the light-emitting layer side and the selective transmission layer side of the anti-counterfeit medium described above. Therefore, the anti-counterfeit medium authenticity determination method described above can be performed using the anti-counterfeit medium authenticity determination apparatus of the present invention.
  • Irradiation unit in this aspect is disposed on both sides of the anti-counterfeit medium when the anti-counterfeit medium is disposed, and irradiates an electromagnetic wave having a specific wavelength in a wavelength region from an ultraviolet region to an infrared region. Is.
  • the irradiation unit usually has a light source.
  • the light source used for the irradiation part is not particularly limited as long as it can irradiate an electromagnetic wave having a specific wavelength in the wavelength region from the ultraviolet region to the infrared region, and is contained in the light emitting layer of the anti-counterfeit medium. It is determined appropriately according to the type of phosphor to be used.
  • As the light source a high-pressure ultraviolet lamp, a low-pressure ultraviolet lamp, an ultraviolet and infrared LED, an ultraviolet and infrared LD (laser diode), an ultraviolet and infrared laser, or the like can be used.
  • the arrangement part in this mode arranges an anti-counterfeit medium. Further, the arrangement unit arranges the anti-counterfeit medium so that the irradiation unit described above is arranged on both sides of the anti-counterfeit medium.
  • the placement unit is not particularly limited as long as the anti-counterfeit medium can be arranged so that the irradiation unit described above is arranged on both sides of the anti-counterfeit medium.
  • the arrangement unit may include a fixing unit that fixes the forgery prevention medium at a predetermined position with respect to the irradiation unit.
  • the fixed part may be trapezoidal.
  • observation unit is provided on the one irradiation unit side, and observes the forgery prevention medium when the forgery prevention medium is arranged.
  • the observation unit can be provided on the one irradiation unit side, and is not particularly limited as long as the anti-counterfeit medium can be observed when the anti-counterfeit medium is arranged.
  • the observation unit is provided between the forgery prevention medium and one irradiation unit.
  • Control unit controls the irradiation unit so that the irradiation of the electromagnetic wave from one irradiation unit and the other irradiation unit among the irradiation units arranged on both sides of the anti-counterfeit medium can be switched. It is something to control.
  • the control unit is not particularly limited as long as it can switch the irradiation of the electromagnetic wave from one irradiation unit and the other irradiation unit among the irradiation units arranged on both sides of the anti-counterfeit medium, A general switch can be used.
  • the anti-counterfeit medium has a cover that suppresses the environment light (external light) from being irradiated during the authenticity determination. Also good.
  • the authenticity determination device for anti-counterfeit medium of this aspect can be used in the authenticity determination method for anti-counterfeit medium of “I. First aspect” in “A. Anti-counterfeit medium authenticity determination method” described above.
  • the authenticity determination apparatus for anti-counterfeit medium of this aspect absorbs the electromagnetic waves which have a specific wavelength among the area
  • the medium is used for authenticating the medium, and is disposed on one side of the anti-counterfeit medium when the anti-counterfeit medium is disposed, and the anti-counterfeit medium is disposed, and irradiates the electromagnetic wave.
  • An irradiation unit and an observation unit that is provided on the irradiation unit side or on the opposite side of the irradiation unit and that observes the anti-counterfeit medium when the anti-counterfeit medium is disposed, and the arrangement
  • the position of the anti-counterfeit medium can be changed so that the light-emitting layer side and the selective transmission layer side of the anti-counterfeit medium face the irradiation part of the electromagnetic wave. It is.
  • FIG. 22 and FIG. 23 are schematic views showing an example and another example of the authenticity determination device for an anti-counterfeit medium according to this aspect.
  • the anti-counterfeit medium authenticity determining device 30 of this aspect is used for determining the authenticity of the anti-counterfeit medium 1 having the selective transmission layer 2 and the light emitting layer 3.
  • the anti-counterfeit medium authenticity determination device 30 is disposed on one side of the anti-counterfeit medium when the anti-counterfeit medium 1 is disposed, and the wavelength from the ultraviolet region to the infrared region.
  • An irradiation unit 32 that irradiates an electromagnetic wave having a specific wavelength, and an observation unit 33 that is provided on one irradiation unit 32 side and observes the anti-counterfeit medium when the anti-counterfeit medium 1 is disposed. . Moreover, the position of the forgery prevention medium 1 can be changed so that the arrangement part 31 faces the light emitting layer 3 side and the selective transmission layer 2 side of the forgery prevention medium 1 to the irradiation part 32.
  • the irradiation unit 32 includes the light source 10.
  • FIG. 22 shows an example in which an observation unit is provided on the same side as the irradiation unit side with respect to the anti-counterfeit medium, and in FIG. 23, the side opposite to the irradiation unit side with respect to the anti-counterfeit medium. Shows an example in which an observation unit is provided.
  • the anti-counterfeit medium authenticity determination device has the above-described configuration, so that it is possible to irradiate each of the light-emitting layer side and the selective transmission layer side of the anti-counterfeit medium described above. Therefore, the anti-counterfeit medium authenticity determination method described above can be performed using the anti-counterfeit medium authenticity determination apparatus of the present invention.
  • the arrangement part in this mode arranges an anti-counterfeit medium.
  • the arrangement portion can change the position of the anti-counterfeit medium so that the light emitting layer side and the selective transmission layer side of the anti-counterfeit medium face the irradiation part of the electromagnetic wave.
  • positioning part what changes the position of the said forgery prevention medium by turning the front and back of the forgery prevention medium in the irradiation position of the electromagnetic wave in an irradiation part can be mentioned.
  • the position of the anti-counterfeit medium is changed by placing the anti-counterfeit medium at the irradiation position of the electromagnetic wave. it can.
  • Irradiation part The irradiation part in this aspect is the same as the above-mentioned item "I. First aspect" except that when the irradiation part arranges the anti-counterfeit medium, it is arranged on one side of the anti-counterfeit medium. The contents can be the same as described.
  • the anti-counterfeit medium according to this aspect is provided with “II. No. 2 in the above-described“ A. Anti-counterfeit medium authenticity determination method ”when the observation unit is provided on the same side as the irradiation unit with respect to the anti-counterfeit medium. It can be used in the method for determining the authenticity of the anti-counterfeit medium of “2 modes”. On the other hand, when the observation part is provided on the surface opposite to the irradiation part side with respect to the anti-counterfeit medium, “III. Third Mode” in the above-mentioned “A. Anti-counterfeit medium authenticity determination method”. It can be used for the authenticity determination method of the forgery prevention medium.
  • the present invention is not limited to the above embodiment.
  • the above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.
  • Example 1 (Preparation of selective permeation layer) First, a resin substrate composed of a single layer to be a selectively permeable layer was prepared. As the resin substrate, a resin substrate made of transparent polyethylene terephthalate having a thickness of 38 ⁇ m was used. The resin base material has selective permeability that transmits visible light and ultraviolet light having a wavelength of 365 nm and absorbs or reflects ultraviolet light having a wavelength of 254 nm.
  • the following fluorescent inks were prepared.
  • a phosphor DE-GR manufactured by Nemoto Special Chemical Co., Ltd.
  • the fluorescent ink is made into an offset ink by adding 8% by weight of microsilica, 2% by weight of organic bentonite, 50% by weight of alkyd resin and 15% by weight of an alkylbenzene solvent to 25% by weight of the phosphor having the above-mentioned fluorescent properties. It has been prepared.
  • Example 2 A volume hologram was formed on the transparent polyethylene terephthalate substrate having a thickness of 38 ⁇ m to form a laminate, and a fluorescent image was further formed on the laminate in the same manner as in Example 1 to obtain a forgery prevention medium. .
  • the laminate was produced by the following method.
  • a laminate of untreated PET film 1 / volume hologram layer / PET film 2 was prepared by the following procedure.
  • volume hologram recording solution having the following composition was prepared.
  • volume hologram recording solution After applying the above volume hologram recording solution on PET film 2 (A4300 (thickness 38 ⁇ m); manufactured by TOYOBO Co., Ltd.) with an applicator to a film thickness of 10 ⁇ m after drying, it is dried in an oven at 90 ° C. Thus, a laminated film of volume hologram recording layer / untreated PET film 2 was obtained.
  • the volume hologram recording layer surface of the obtained laminated film is brought into close contact with the hologram master, laser light (532 nm) is incident at 80 mJ / cm 2 from the untreated PET film 2 side, and the volume hologram is applied to the volume hologram recording layer. Recorded.
  • the film After recording, the film is peeled off from the original hologram, and untreated PET film 1 (Lumirror (registered trademark) T60 (thickness 50 ⁇ m); manufactured by Toray Industries, Inc.) is laminated on the volume hologram layer surface, and then heated to carry out UV fixing exposure did.
  • untreated PET film 1 Limirror (registered trademark) T60 (thickness 50 ⁇ m); manufactured by Toray Industries, Inc.
  • T60 thickness 50 ⁇ m

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Credit Cards Or The Like (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Printing Methods (AREA)

Abstract

Le but principal de la présente invention est de fournir un procédé, etc. pour déterminer l'authenticité d'un support anti-contrefaçon, avec lequel il soit possible de déterminer, à un niveau élevé, l'authenticité du support anti-contrefaçon. Pour atteindre ce but, la présente invention concerne un procédé qui permet de déterminer l'authenticité d'un support anti-contrefaçon, le procédé étant caractérisé par les étapes consistant : à préparer un support anti-contrefaçon ayant une couche de transmission sélective et une couche d'émission de lumière, la couche d'émission de lumière étant empilée sur la couche de transmission sélective et contenant un luminophore qui absorbe une onde électromagnétique ayant une longueur d'onde spécifique dans le domaine de longueur d'onde allant du domaine de l'ultraviolet au domaine de l'infrarouge et qui émet une autre onde électromagnétique ayant une longueur d'onde différente de celle de ladite onde électromagnétique, la couche de transmission sélective possédant des propriétés de transmission sélective telles que la couche de transmission sélective absorbe ou réfléchit l'onde électromagnétique et transmet l'autre onde électromagnétique ; à disposer le support anti-contrefaçon de manière que le côté couche d'émission de lumière ou le côté couche de transmission sélective du support anti-contrefaçon soit face à un observateur ; à exposer le côté couche d'émission de lumière et le côté couche de transmission sélective du support anti-contrefaçon à l'onde électromagnétique afin de déterminer l'authenticité du support anti-contrefaçon par utilisation d'un changement dans la forme de l'autre onde électromagnétique observée par l'observateur.
PCT/JP2015/080538 2014-10-30 2015-10-29 Procédé pour déterminer l'authenticité d'un support anti-contrefaçon et dispositif de détermination d'authenticité pour support anti-contrefaçon WO2016068232A1 (fr)

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JP2014-221909 2014-10-30
JP2014221909A JP2016091121A (ja) 2014-10-30 2014-10-30 偽造防止媒体の真贋判定方法および偽造防止媒体用真贋判定装置

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JP2018043496A (ja) 2016-09-16 2018-03-22 株式会社東芝 情報記録媒体及び真偽判定方法
JP7022356B2 (ja) * 2017-03-16 2022-02-18 大日本印刷株式会社 発光媒体、偽造防止媒体及びその真贋判定方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001018515A (ja) * 1999-07-09 2001-01-23 Kobayashi Kirokushi Co Ltd 偽造防止有価証券
JP2011224927A (ja) * 2010-04-22 2011-11-10 Toppan Printing Co Ltd 偽造防止媒体、偽造防止転写箔、偽造防止用紙及び真贋判定方法
WO2013072849A1 (fr) * 2011-11-14 2013-05-23 Arjowiggins Security Structure multicouche

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001018515A (ja) * 1999-07-09 2001-01-23 Kobayashi Kirokushi Co Ltd 偽造防止有価証券
JP2011224927A (ja) * 2010-04-22 2011-11-10 Toppan Printing Co Ltd 偽造防止媒体、偽造防止転写箔、偽造防止用紙及び真贋判定方法
WO2013072849A1 (fr) * 2011-11-14 2013-05-23 Arjowiggins Security Structure multicouche

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