JP5045220B2 - Valuables packaging and its authenticity judgment device - Google Patents

Description

  The present invention relates to a valuable package and an authenticity determination device thereof. Specifically, the present invention relates to a package suitable for containing a precious metal such as a thin plate, a commemorative coin, and the like, and guaranteeing its authenticity, and an authenticity determination device thereof. Specific applications of the present invention are in the field of packaging precious metals such as gold, silver, platinum, and commemorative coins, and their authenticity determination.

Valuables such as precious metals and commemorative coins are strictly sealed and stored in order to prevent them from being replaced by fake or low-grade items by malicious persons or being damaged by mischief. However, precious metals and commemorative coins are inherently valuable for visual appreciation, so their original value is diminished if they are sealed and hidden from the outside.
In view of this, a storage method has been conventionally used that can be made visible from the outside, but can be prevented from being soiled or scratched by the hand or being replaced. It is also important to provide means for proving that the sealed package itself has not been replaced with a counterfeit.

For this purpose, the prior patent document 1 states that “a transparent resin seal in which a valuable material is sandwiched between a substrate on which a hologram layer is formed via a release layer and an adhesive layer is formed on a transparent resin sheet. It describes a valuables package that is characterized by being “sealed by”. According to this proposal, since valuables are sandwiched between substrates and sealed with a transparent resin seal, the sealing can be performed easily. In addition, since it is adhered by a transparent resin seal, it can be opened easily, and when it is opened, the release layer peels off, so that the hologram layer can be destroyed and leave an opening trace.
However, the proposed valuables package has a problem in that the determination of authenticity has to be relied upon visually, and the determination cannot be performed reliably.

  Patent Document 2 proposes a valuables packaging body in which valuables are stored in a housing recess of a container and then sealed with a hologram seal provided with a machine-readable holo mark. When you take out valuables, you can see the traces on the seal. However, this mark is visible, and there is a problem that the presence of security is obvious and the impression is deteriorated, and the label is peeled off or cannot be read depending on the unevenness of the valuables to be stored. Further, when the hologram sticker itself is imitated, there is a problem that it is difficult to determine the authenticity.

  In view of the above, the present invention is to record a normal hologram label that can be visually recognized with white light, including a laser reproduction type hidden hologram pattern, and to identify the determination using a dedicated authenticity determination device. . In addition, there exists prior art documents, such as patent document 3 and patent document 4, about such a hologram.

Japanese Utility Model Publication No. 4-102261 Japanese Patent Laid-Open No. 5-318667 JP 2000-3124 Japanese Patent Laid-Open No. 11-24539

As described above, since the conventional valuables package uses a hologram label with a clear presence of security, there is a problem that a user's impression is deteriorated. Further, in recent years when the hologram itself can be duplicated by a person with a certain level of technology, there is a risk that a valuable package that imitates a hologram label will appear, and there has been a problem that cannot be taken as a perfect countermeasure.
Therefore, in this application, the hologram label is provided with a laser reproduction type hidden hologram pattern, and the authenticity of the valuable package itself is assured by reliably determining with a dedicated authenticity determination device.

1 aspect of the present invention for solving the aforementioned problems is a ing from the elongated and in flat body portion and the body portion of the transparent upper lid portion that covers for accommodating the valuables are resin molded hull Sokarada upper lid When the unit is inserted into the main unit and valuables are stored in the storage unit and sealed , it is superimposed on a visually visible white light reproduction hologram at a fixed position on the inner surface of the upper lid , and a laser beam reproduction type by the CGH method is used. A hologram label on which a hidden hologram pattern is recorded is affixed, and by irradiating the hologram label with a laser beam through a transparent upper lid base material, a hidden image different from a hologram image that can be visually recognized when no laser beam is irradiated There is a valuable package that reproduces a reproduced image of a hologram pattern on a screen of an authenticity determination device.

A second aspect of the present invention is an apparatus for determining authenticity by irradiating the hologram label of the valuable package according to claim 1 or 2 with a laser beam having an output of less than 0.2 mW to less than 1 mW. A light-shielding housing that houses a laser emitter and a power supply battery has an insertion port for inserting the valuable package on the top surface or side surface of the housing, and a screen for reproducing image formation on the front surface or top surface of the housing. The hidden hologram pattern recording portion of the hologram label is irradiated with the laser beam when the valuable package is inserted through the insertion slot and pressed after the tip of the valuable package reaches the limit switch. The authentication apparatus is characterized in that a hidden hologram pattern reproduction image of a hologram label is formed on the screen by being irradiated with laser light.

(1) In the valuable package of the present invention, a hologram label for authenticity determination is affixed to the inner surface of the upper lid, and the hologram label is visible in addition to the visible hologram pattern (hereinafter referred to as “hidden”). A holo pattern ”). Therefore, it is possible to reliably determine whether the valuable package or the hologram label itself is a counterfeit by reproducing the hidden holo pattern with a laser beam.
(2) The valuable package of the present invention has a hologram label for authenticity determination attached to the inner surface of the main lid and the upper lid portion, and the authenticity is determined through the transparent base material of the upper lid portion. The label is not replaced with a counterfeit product, and the hologram label is not exposed to the outer surface, so that durability can be improved.

(3) The authenticity judgment device of the present invention is configured such that when the valuable package is simply inserted from the insertion slot and pressed after the tip of the valuable package reaches the limit switch, the hidden holo pattern recording position is set to the laser beam. Since the laser beam is irradiated and the hidden holo pattern reproduction image is formed on the screen, anyone can easily determine the authenticity based on the presence or absence of the image formation. .
(4) The authenticity determination device of the present invention is a compact form because the semiconductor laser emitter, the power supply battery, and the imaging screen are integrated into a small light-shielding housing, and is specially designed for authenticity determination. An inexpensive work place is not required and the apparatus can be made inexpensive.
(5) The authenticity determination apparatus of the present invention has a semiconductor laser emitter in a light-shielding housing and is irradiated with laser light only when pressed, so that it is safe for the human body and a power battery can also be used effectively.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view and configuration of a valuable package, FIG. 2 is a sectional view of the valuable package, FIG. 3 is a diagram showing a hologram label and its layer configuration, and FIG. 4 is a hologram label. FIG. 5 is an external view of the authenticity determination device, and FIG. 6 is a diagram illustrating an internal configuration of the housing of the authenticity determination device.

  As shown in FIG. 1A, the valuable package 1 according to the present invention comprises a casing 2 that is slightly elongated and flat as a whole. The housing 2 includes a transparent upper lid portion 22 (FIG. 1C) and a main body portion 21 (FIG. 1B) having an accommodating portion 23 for storing valuables. The case 2 is formed in a slightly elongated shape when a determination part of the authenticity determination hologram label 10 is inserted into the authenticity determination device, and a part of the case 2 is outside the authenticity determination device. This is to facilitate the extraction. Further, the reason for flattening is that there are many flats such as coins that are stored as valuables. However, it is not limited to this form.

The main body portion 21 has a structure having a concave housing portion 23 into which valuables are fitted and stored, and is molded from a colored resin material or the like. It is preferable that the upper cover part 22 is provided with a peripheral edge part 22e having a depth for accommodating the whole main body part 21 on the outer periphery, and the whole is molded from a transparent resin. This is because the valuables 3 and the hologram label 10 can be visually recognized.
When storing the valuables in the main body 21 and covering it with the upper lid portion 22, the main body portion 21 and the upper lid portion 22 are usually fixed with an adhesive so that they cannot be easily opened. This is to prevent taking out valuables.

  A key-shaped (“”) ruled line (a line formed by molding a transparent resin) 22 k is formed on the inner surface of the upper lid portion 22 and a position where the hologram label 10 is pasted. The hologram label 10 is affixed at a fixed position with a target of 22k. This is because the hidden holo pattern recording portion of the hologram label 10 is always located at the irradiation portion of the laser light beam to reproduce the hidden holo pattern on the screen. When valuables are stored in the storage part 23, the space between the upper cover part 22 and the upper lid part 22 is sealed using an adhesive as described above, but the entire housing 2 storing the valuables is replaced with a counterfeit product. In this case, the authenticity of the casing 2 itself is determined by the hologram label 10.

FIG. 2 is a cross-sectional view of the valuable package. This corresponds to the transverse section of 10 parts of the hologram label in FIG. As described above, the peripheral edge portion 22 e having a height for housing the main body portion 21 is integrally formed on the outer periphery of the upper lid portion 22 over the entire periphery of the upper lid portion 22. The valuable 3 is stored in the storage unit 23, and the hologram label 10 is attached to the inner surface of the upper cover unit 22. A label recess 22d having a depth about the thickness of the hologram label 10 is formed on the pasting portion.
The hologram label 10 is pasted so as to be fitted into the label recess 22d. A hidden holo pattern is reproduced on the screen by irradiating the laser beam 5 through the base material layer of the transparent upper lid portion 22. Since the laser beam becomes a beam having a diameter of about 1 mm, the hidden holo pattern recording unit needs to be positioned at the beam position.

3A and 3B are diagrams showing a hologram label and its layer structure, in which FIG. 3A is a plan view and FIG. 3B is a cross-sectional view. When viewed from a plane, the hologram label 10 appears that various holo patterns shine in rainbow colors under white light. The pattern and rainbow color change depending on the viewing angle. The hidden holo pattern is located almost at the center of the hologram label 10 but is not visible under white light.
As shown in the sectional view of FIG. 3B, the hologram label 10 is provided with a hologram forming layer 12 on a base material 11, a reflective layer 13 is formed on the surface of the hologram forming layer 12, and a transparent adhesive on the reflective layer 13 surface. Layer 14 has been applied. The hologram label 10 is affixed to the transparent base material of the upper lid portion 22 by the transparent adhesive layer 14.

  The hologram forming layer 12 is a relief hologram on which interference fringes are recorded. A white light reproduction type hologram is recorded so that the pattern can be visually confirmed. Actually, a metal mold for molding is formed from a photosensitive material in which interference fringes are recorded, and a resin layer shaped by the metal mold is the hologram forming layer 12. A reflective layer 13 is formed in a thin film on the uneven surface of the duplicated interference fringes by vacuum deposition, sputtering, or the like.

  Since the hologram forming layer 12 is formed by stamping from the mold material on which the hologram is recorded as described above, a material having a formability is used. For example, a thermoplastic resin such as polycarbonate, polystyrene, polyvinyl chloride, or a copolymer or mixture thereof, unsaturated polyester resin, melamine resin, epoxy resin, urethane (meth) acrylate, polyester (meth) acrylate, epoxy ( Thermosetting resins such as (meth) acrylate resins such as (meth) acrylate, polyol (meth) acrylate, melamine (meth) acrylate, and triazine (meth) acrylate, or copolymers or mixtures thereof, and radical polymerizable unsaturated A thermoformable material having a group can be used.

  The reflective layer 13 is a layer that reflects incident light. When the metal layer has a metallic feeling, reflection characteristics, and refractive reflection characteristics, a metal or a metal compound is generally used for vacuum deposition, sputtering, ion plating, etc. It can be formed by a typical thin film forming method. The metal feeling may be a mirror gloss with a smooth surface or a matte metal feeling with a rough surface. A specific example of the metal thin film is a metal thin film obtained by vacuum-depositing aluminum. In addition, thin film forming materials include gold, silver, copper, chromium, nickel, zinc, titanium, germanium, silicon, magnesium, tin, indium, and other metals and oxides thereof (for example, silicon dioxide), nitrides, What is necessary is just to use a sulfide etc. individually or in combination of 2 or more types. If the thickness of the metal thin film made of metal, metal oxide, metal nitride or the like is too thin, the film itself cannot be visually recognized. Therefore, the thickness is usually 10 to 1000 nm, preferably about 20 to 60 nm.

In order to make the reflective layer 13 a transparent reflective layer, a layer made of a metal compound having a refractive index larger than the refractive index of the hologram forming layer 12 (normally, the refractive index n is 1.3 to 1.6). Use it. Specific materials for such a thin film to be a transparent reflecting layer (hereinafter, the refractive index: n is added in parentheses to the right of the material name), Sb ₂ S ₃ (n = 3.0), Fe ₂ O ₃ (n = 2.7), TiO ₂ (n = 2.6), CdS (n = 2.6), CeO ₂ (n = 2.3), ZnS (n = 2.3), PbCl ₂ (N = 2.3), CdO (n = 2.2),
Sb ₂ O ₃ (n = 2.0), WO ₃ (n = 2.0), SiO (n = 2.0), Bi ₂ O ₃ (n = 2.5), In ₂ O ₃ (n = 2.0), PbO (n = 2.6), Ta ₂ O ₅ (n = 2.4), ZnO (n = 2.1), ZrO ₂ (n = 2.0), Cd ₂ O ₃ ( n = 1.8), Al ₂ O ₃ (n = 1.6), CaO · SiO ₂ (n = 1.8), and the like.

The thin film preferably has a refractive index greater by 0.3 or more than the refractive index of the hologram forming layer 12, more preferably by 0.5 or more.
The film thickness of the thin film used as the transparent reflection layer may be 1000 nm or less, and usually 20 to 60 nm is preferable. If the thickness of the thin film exceeds 1000 nm, the multiple reflection as described above does not occur favorably inside the thin film, and if the thickness is 10 nm or less, stable film formation becomes difficult.

<Embodiments related to other materials>
(1) Hologram label base material As the base material 11, various resin films such as polyethylene terephthalate (PET) film, polycarbonate, polyamide, polyvinyl chloride, polyimide, cellulose diacetate, cellulose triacetate, polystyrene, acrylic, polypropylene, polyethylene and the like. Can be used. The thickness is about 10 μm to 500 μm.
(2) Pressure-sensitive adhesive layer As the pressure-sensitive adhesive layer 14, one that keeps an intermediate tack state for a long time without gradually increasing the viscosity gradually can be preferably used. Resin composition adheres to natural rubber, synthetic rubber, nitrile rubber, epoxy resin, vinyl acetate emulsion, polyester, acrylic, acrylate copolymer, polyvinyl alcohol, phenolic resin, etc. A mixture of an auxiliary agent (rosin, ester rubber, petroleum resin, etc.), a plasticizer (phthalate ester, non-drying oil, low molecular weight polyisobutylene, etc.) and a filler is used.

  A feature of the hologram label 10 used in the present invention is that a laser beam reproduction type hidden holo pattern is recorded so as to be superimposed on a white light reproduction type hologram. The hidden holo pattern is a hologram pattern created by a computer generated hologram (CGH). The computer generated hologram is obtained by simulating an optical interference fringe generation process by a computer, and the process of generating an interference fringe pattern is all performed as an operation on a computer. Based on the image data of the interference fringe pattern obtained by such calculation, physical interference fringes are formed on the actual medium. Specifically, for example, a method of forming physical interference fringes on, for example, a photosensitive resin by applying image data of an interference fringe pattern to an electron beam drawing apparatus and scanning the electron beam on a medium is performed. ing.

As an example of the hidden holo pattern, when reproducing the characters “OK”, an interference fringe pattern by a computer is generated as a size of about 1 mm in diameter, and the pattern is superimposed on the interference fringe pattern of the relief hologram on the photosensitive resin. Record. After development, it is formed as a fine uneven pattern on the surface of the cured product of the photosensitive resin. Of course, it is possible to make the hologram label 10 as it is, but normally, a concavo-convex mold is manufactured using this as a prototype, and a large amount of duplication is performed using the obtained concavo-convex mold. The reason why the interference fringe pattern formed by the computer is about 1 mm in diameter is that the semiconductor laser light beam to be reproduced has that degree.
The computer generated hologram is described in detail in Patent Document 4 and the like.

FIG. 4 is a diagram illustrating a method for determining the authenticity of a hologram label. Since the laser beam reproduction-type hidden holo pattern is recorded in a certain narrow range of the hologram label 10, the laser beam 5 is irradiated from the semiconductor laser light emitter 4 by defining the location. The reproduced hidden holo pattern 10k forms an image on the screen 36. In the case of FIG. 4, the characters “OK” are displayed.
The hologram label 10 is affixed at a fixed position within the key-shaped ruled line 22k of the upper lid portion 22 of the valuables package 2, the hidden holo pattern is recorded at a fixed position on the hologram label 10, and the valuables package 2 is Since the authentication apparatus is stopped at a certain position, the hidden holo pattern recording unit is always located at the laser beam irradiation position. The irradiation angle α of the laser light beam 5 and the angle of the diffracted light are designed and calculated in advance.

  FIG. 5 is an external view of the authenticity determination device. A part of the internal structure is shown through. The authenticity determination device 30 includes a light-shielding casing 31 made of a light-shielding material that is colored as a whole. This is to prevent the laser beam 5 from entering the eyes. Although the shape of the light-shielding housing 31 can be an appropriate shape such as a cube or a cylinder, it is necessary to have a flat portion that becomes the screen 36 for reproducing the hidden holo pattern. The screen 36 may be one in which frosted glass or the like is pasted on the front surface or the upper surface of the light shielding casing 21. The light shielding casing 31 has an insertion port (inspection hole) 33 into which the valuable package 1 is inserted on the upper surface or side surface. The shape of the insertion port 33 is substantially the same as the cross-sectional shape of the valuables package 1.

In the case of FIG. 5, the light-shielding casing 31 has a substantially cubic shape, has an insertion port (inspection hole) 33 on the upper surface, and a screen 36 on the front surface. The screen 36 may be an inclined surface rather than a vertical surface to facilitate observation. The hidden holo pattern 10k reproduced on the screen 36 can of course be observed with the naked eye.
Inside the authenticity determination device 30, a semiconductor laser light emitter (including its circuit board) 4 and a power source battery are housed. The semiconductor laser light emitter 4 irradiates the portion of the hologram label 10 where the hidden holo pattern is recorded, and the diffracted light is refracted at a predetermined angle to form a hidden holo pattern image 10k on the screen 36 surface. Has been.
The emission color of the semiconductor laser may be any color such as red, blue and green as long as it is visible. A low output of about 0.2 mW to 3 mW is sufficient. If it is less than 1 mW, direct viewing for less than 0.25 seconds is said to be satisfactory.

  FIG. 6 is a diagram illustrating an internal configuration of the housing of the authenticity determination device. The valuables package 1 inserted from the insertion port (inspection hole) 33 is stopped on the limit switch 32 for the semiconductor laser emitter 4. The limit switch 32 is not in the “ON” state with the weight of the valuable package 1, but the switch is in the “ON” state when a little force is applied to the fingertip. As a result, the semiconductor laser emitter 4 is turned on. The authenticity determination device 30 includes a power supply battery 38, and the semiconductor laser light emitter 4 is turned on by the control circuit 34 and the LD driver 35. The hidden holo pattern reproduction image on the screen 36 can be observed with the naked eye 7.

(Example of hologram label)
After using polyethylene terephthalate having a thickness of about 50 μm as the base material 11 and applying a resin for hologram forming layer 12 made of an ultraviolet curable transparent resin having a thickness of 1 to 3 μm on one surface thereof, A hologram forming layer 12 was formed by embossing a concavo-convex pattern of a hologram pattern including a hidden holo pattern of letters “OK”. The hidden holo pattern was formed by the CGH method and recorded in a circle having a diameter of about 1 mm.
Next, a transparent reflective layer (material: titanium oxide) 13t was formed on the surface of the hologram forming layer 12 to a thickness of 30 to 50 nm by vacuum deposition. A transparent pressure-sensitive adhesive layer (material: pressure-sensitive adhesive containing acrylic resin as a main component) 14 was applied and formed to a thickness of 20 to 30 μm by a gravure reverse method on the transparent reflective layer 13t forming surface. One hologram label 10 was cut to a size of 15 mm × 15 mm so that a hidden holo pattern was positioned at the center.

(Example of valuables packaging)
On the other hand, a valuable package 20 as shown in FIG. 1 was manufactured as follows.
The main body portion 21 had a thickness of 5 mm, a width of 29 mm, a length of 79 mm, and a shape having an accommodation recess 23 for storing valuables, and was molded from a polystyrene resin colored in red. The upper lid portion 22 had an outer shape with a thickness of 6 mm, a width of 32 mm, and a length of 82 mm, in which the main body portion 21 was accommodated without a gap, and was molded from a transparent polystyrene resin. The thickness of the peripheral portion was 1.5 mm, and the base material of the top plate portion was 1.0 mm. A key-like (“”) ruled line 22 k was simultaneously formed at the position where the hologram label 10 near the one end side of the upper lid portion 22 was affixed.

The hologram label 10 manufactured as described above was attached to the inner side of the key-shaped (“”) ruled line 22 k of the upper cover portion 22 of the valuables package 1 with the adhesive layer 14.
After storing valuables in the concave portion of the main body 21, the main body 21 was fitted into the upper cover 22 to which the hologram label 10 was attached, and the upper cover 22 and the main body 21 were fixed with an adhesive.

(Example of authenticity determination device)
The authenticity determination device 30 has an outer shape as shown in FIG. 5 and is assembled by cutting a black acrylic plate having a thickness of 3 mm. The insertion port 33 had a thickness of 5.2 mm and a width of 29.2 mm, and was provided on the upper surface side. A limit switch 32 is provided directly below the insertion port 33, and the semiconductor laser 4 is turned on when the valuables package 1 is inserted and lightly pressed.
The semiconductor laser 4 having a red emission (wavelength of 650 nm) and an output of 0.6 mW was used. An alkaline battery was used as the power battery. The incident angle α of the laser light beam 5 with respect to the hidden holo pattern recording portion is set to about 10 to 15 degrees so that diffracted light is generated at substantially the same angle. A screen 36 made of polished glass was pasted on the front surface of the authenticity determination device 30 on which the hidden holo pattern 10k forms an image. Note that the distance between the hidden holo pattern recording portions of the semiconductor laser 4 and the hologram label 10 was set to about 50 mm to 70 mm.

  When the valuable package 1 with the hologram label 10 attached thereto is inserted into the authenticity determination device 30 through the insertion port 33 and pressed lightly, the semiconductor laser 4 emits light, and the beam diameter is about 1 mm to conceal the holo pattern. The recording part was irradiated. Thereby, a red reproduction image of a predetermined hidden holo pattern (character pattern “OK”) could be confirmed on the screen 36 surface.

It is a figure which shows the external appearance perspective view and structure of a valuables packaging body. It is sectional drawing of a valuables packaging body. It is a figure which shows a hologram label and its layer structure. It is a figure which shows the authenticity determination method of a hologram label. It is an external view of an authenticity determination apparatus. It is a figure which shows the housing internal structure of an authenticity determination apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Valuables package 2 Case 3 Valuables 4 Laser emitter 5 Laser light beam 10 Hologram label 11 Base material 12 Hologram formation layer 13 Reflective layer 14 Adhesive layer 30 Authenticity judgment device 31 Light shielding case 32 Limit switch 33 Insertion Mouth (inspection hole)
36 Screen 38 Battery power

Claims (3)

A ing from the elongated and in flat body portion and the body portion of the transparent upper lid portion that covers for accommodating the valuables are resin molded hull Sokarada, the upper lid portion to the housing portion valuables and fitted to the main body portion At the fixed position on the inner surface of the top lid when sealed, a hologram label on which a laser beam reproduction type hidden hologram pattern recorded by the CGH method is superimposed is pasted on a visible white light reproduction type hologram. In addition, by irradiating the hologram label with a laser beam through a transparent upper lid base material, a reproduction image of a hidden hologram pattern different from the hologram image that can be visually recognized when the laser beam is not irradiated is displayed on the screen of the authenticity determination device. A valuables package characterized by reproduction. 2. The valuable package according to claim 1, wherein the hologram label is a transparent hologram label. An apparatus for judging authenticity by irradiating the hologram label of the valuable package according to claim 1 or 2 with a laser beam having an output of less than 0.2 mW to less than 1 mW , and housing a semiconductor laser emitter and a power supply battery. The light-shielding housing has an insertion port for inserting the valuable package in the upper surface or side surface of the housing, and has a reproduction image imaging screen on the front surface or upper surface of the housing, When the package is inserted through the insertion slot and pressed after the tip of the valuable package reaches the limit switch, the hidden hologram pattern recording part of the hologram label is positioned at the laser beam irradiation position, and the laser beam is irradiated. Then, an authenticity determination device characterized in that a hidden hologram pattern reproduction image of a hologram label is formed on the screen.

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