JP4253057B2 - Information hiding medium and method of using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information concealment medium used for various KUJI, a telephone card with a PIN code for international calls, a card with a PIN code for Internet connection, a card with a PIN code for telephone banking, and a method of using the same.
[0002]
[Prior art]
Conventionally, as this type of information concealment medium, a so-called scratch card is widely known in which a fragile silver-colored concealment layer is removed with a coin or an adhesive tape to visually check secret information (Japanese Utility Model Publication No. 44-1294). No. 48, No. 48-28453, JP-A-1-257100, JP-A-2-297482, etc.).
[0003]
[Problems to be solved by the invention]
However, there is a possibility that the above-mentioned scratch card may be counterfeited as if it is unused by removing the concealment layer and stealing secret information and then applying silver ink or the like again. In the unlikely event that such counterfeiting is performed, it is difficult to determine whether or not the secret information is leaked only from the appearance.
[0004]
An object of the present invention is to provide an information concealment medium that is difficult to forge and that can easily determine whether or not confidential information is leaked even if it is forged, and a method of using the same. It is.
[0005]
[Means for Solving the Problems]
The present invention solves the above problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this.
In order to solve the above-mentioned problem, the invention of claim 1 includes a medium base (11) and a secret information display unit (12a) formed on a part of the medium base (11) and displaying secret information (12a). ) And at least the secret information display part (12), and the secret information (12a) is concealed invisible and can be destroyed and removed in a non-reformable and machine-readable counterfeit discrimination information part ( 14a), and the forgery discrimination information part (14a) includes a magnetic recording part for magnetically recording the forgery discrimination information and an optical formed on the concealment layer. Display of the machine-readable counterfeit discrimination information, wherein the optically readable display of the counterfeit discrimination information is provided across the concealing layer and the medium substrate. information hiding media der to .
[0007]
The invention of claim 2 is the information hiding medium according to claim 1, wherein the hiding layer (14) is a tape.
[0008]
The invention of claim 3 is a method of using the information concealment medium according to claim 1 or 2 , wherein the forgery discrimination information section (14a) is mechanically read to discriminate the forgery layer (14). The method for using the information concealment medium is characterized in that it is determined whether or not the secret information (12a) is leaked.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram showing a first embodiment of an information hiding medium according to the present invention. In the figure, (A) is a plan view, and (B) is a cross-sectional view taken along the line BB of (A).
The information concealment medium 10 includes a medium substrate 11, a secret information display unit 12, an adhesive layer 13, and a concealment layer 14.
[0010]
The medium substrate 11 is a substrate serving as a carrier for the information hiding medium 10. The medium substrate 11 is made of a commonly used plastic material (for example, polyethylene (PE), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polycarbonate (PC), acrylonitrile / butadiene / styrene). Polymerization (ABS), acrylonitrile-styrene copolymer (AS), polymethyl methacrylate (PMMA), cellulose acetate butyrate (CAB), cellulose propionate (CP), etc.) or paper (eg, art paper, coated paper, Synthetic paper or the like) can be suitably used.
A typical example of such a medium substrate 11 is a special paper-made statistical card paper Snow White 167 g / m ² .
[0011]
The secret information display unit 12 is a display unit formed on the medium base 11, and secret information 12a to be kept secret is printed, printed (variable information by a printer or the like) or handwritten.
For example, if the information concealment medium 10 is used as a lottery, the secret information 12a is “atari”, “losing” or the like, and if the information concealment medium 10 is used as a telephone card for international calls. This is a PIN number to be entered when using an international call.
The secret information 12a may be printed, printed (variable information by a printer or the like) or handwritten in a color similar to that of the medium base 11 or the concealing layer 14. This is because the secret information 12a is difficult to see even if it is transmitted through light.
Further, it is desirable that the secret information 12a has less unevenness on the surface, and therefore, it may be offset printing, printing (variable information by a printer or the like) or handwriting. That is, if the surface is uneven, the secret information 12a may be recognized from above the concealment layer 14 due to light reflection even if the concealment layer 14 conceals it.
A typical offset ink for printing the secret information 12a is, for example, the UV-BOF series manufactured by The Inktec.
[0012]
The adhesive layer 13 is a layer that allows the concealing layer 14 to adhere to the medium substrate 11. The adhesive layer 13 may be a heat sealable material that can be bonded by heat and pressure.
[0013]
The concealment layer 14 is a layer formed in the secret information display unit 12, and makes the secret information 12a invisible. Further, the concealing layer 14 can be removed in a non-reformable manner by scraping with a nail or a coin, or applying an adhesive tape or the like.
The concealment layer 14 includes a forgery discrimination information unit 14a. The forgery determination information unit 14a is a magnetic recording unit, and magnetically records the forgery determination information.
That is, the masking layer 14 is formed of a magnetic tape. For example, γ-Fe ₂ O ₃ , cobalt-coated γ-Fe ₂ O ₃ , and barium are applied to a plastic tape such as polyethylene terephthalate (PET) as a base. Magnetic powder such as ferrite can be formed by applying and fixing with a binder.
The magnetic tape has a transfer type configuration with polyethylene terephthalate (PET) as the base for the uppermost layer, a magnetic layer for the intermediate layer, and a heat seal material for the lower layer, or a magnetic layer for the uppermost layer and a base for the intermediate layer. Polyethylene terephthalate (PET) and a seal-type structure having a heat seal material in the lower layer.
Since the concealing layer 14 is a magnetic tape, the opacity is high, and the concealing effect of normal printed characters (black) is high. In particular, about 219.0 KA / m is preferable.
A typical example of such a masking layer 14 is T0073 219.0KA / m manufactured by Dainippon Ink and Chemicals, Inc.
[0014]
The magnetic recording portion of the magnetic tape is mixed with a larger amount of magnetic powder than the amount of binder in order to ensure a sufficient coercive force. Therefore, the self-holding property is small only with the magnetic layer, and it becomes a tape shape only when it is formed on a plastic film or a base material as a base.
Therefore, when the magnetic tape is a transfer type, the heat recording material that adheres the magnetic recording part to the base material is not sufficiently heated, and the adhesive force to the base material is reduced, so that the magnetic recording part becomes the base film. After peeling, the layer has a scratch function.
Further, when the magnetic tape is a seal type, the magnetic recording portion similarly becomes a layer having a scratch function by adjusting the amount of the binder and reducing the adhesive force to the base.
[0015]
(Production method)
The information hiding medium 10 is produced as follows.
(1) By using offset ink (for example, UV-BOF series manufactured by The Inktec) on a roll-shaped medium base material 11 (for example, special paper-made statistical card paper Snow White 167 g / m ² ), the secret information 12a Are offset printed, printed (variable information by a printer, etc.) or handwritten.
[0016]
(2) In (1), a magnetic tape (for example, Dainippon Ink, Inc.) in which a heat seal material is applied in a separate process to the medium substrate 11 on which the secret information 12a is printed, printed (variable information by a printer, etc.) or handwritten. T0073 (219.0 KA / m) manufactured by Chemical Industry is bonded under heat and pressure, and the base is peeled off to form a concealing layer 14 composed of a magnetic recording portion. In addition, when using the said material, it is good to carry out hot-pressure bonding on the hot-pressure conditions; 130 degreeC, 2.0 kg / cm < ² >, adhesion | attachment driving speed; 20 m / min, for example.
[0017]
(3) In (2), the medium base 11 on which the concealment layer 14 is formed is card-extracted to finish the card size, and the information concealment medium 10 is completed.
[0018]
(how to use)
The information hiding medium 10 is used as follows.
(1) The manufacturer magnetically records the forgery determination information on the concealment layer 14.
[0019]
(2) In (1), the manufacturer who magnetically records the forgery determination information hands over the information concealment medium 10 to the trader.
[0020]
(3) In (2), the trader who has received the information concealment medium 10 machine-reads the forgery discrimination information part 14a of the concealment layer 14 to determine whether the secret information 12a is leaked by performing forgery discrimination. Determine.
If the forgery determination information unit 14a cannot read the machine as desired, it can be determined that there is a high possibility that the secret information 12a is leaked. If the forgery determination information unit 14a can perform machine reading as desired, it can be determined that the secret information 12a is not leaked.
[0021]
(4) The trader who has determined that the secret information 12a is not leaked in (3) hands over the information concealment medium 10 to the user.
[0022]
(5) In (4), the user who has received the information hiding medium 10 removes the hiding layer 14 and visually checks the secret information 12a.
[0023]
According to the present embodiment, the concealment layer 14 is destroyed and removed so as not to be re-formable, and therefore, a person who steals the secret information 12a cannot be repaired again.
Moreover, since the concealing layer 14 has a magnetic recording part, it is possible to magnetically record forgery discrimination information. Therefore, the forgery determination information is not visible and the third party is not informed that the forgery determination information is recorded.
Further, since the concealment layer 14 records the forgery discrimination information so as to be machine-readable, even if the snooping person of the secret information 12a forges the concealment layer 14 with a new tape, the forgery discrimination information can be read. Thus, forgery determination of the concealment layer 14 can be made. Thereby, it is possible to easily determine whether or not the secret information 12a is leaked.
Furthermore, since the masking layer 14 is a tape, only the masking layer 14 can be manufactured in a separate process. Therefore, for example, it can be manufactured at low cost by using an off-the-shelf product manufactured separately.
[0024]
(Second Embodiment)
FIG. 2 is a diagram showing a second embodiment of the information hiding medium according to the present invention. In the figure, (A) is a plan view, and (B) is a cross-sectional view taken along the line BB of (A).
Note that, in the embodiment described below, the same reference numerals are given to the portions that perform the same functions as those in the first embodiment described above, and repeated descriptions are omitted as appropriate.
The information hiding medium 10 includes a medium base material 11, a secret information display unit 12, and a hiding layer 14.
[0025]
The concealment layer 14 is a layer that has concealability (opacity) of the base (secret information 12a) and is scraped off (scratched) by rubbing with a nail or a coin. It can also be peeled off with an adhesive tape or the like. The concealment layer 14 is formed on the secret information display unit 12. The masking layer 14 is formed by screen printing of ink.
[0026]
The ink for forming the concealing layer 14 includes rubber-based natural resins (natural rubber, hydrochloric acid rubber, etc.), diene-based resins (polybutadiene, styrene / butadiene copolymer, acrylonitrile / butadiene copolymer, polyisoprene, polychloroprene, etc.) An acrylic resin, a vinyl resin, or the like is used as a vehicle (a component for transferring and fixing the pigment to the printing surface). In addition, inorganic and organic pigments (iron oxide, titanium oxide, cobalt oxide, pearlescent pigments, phthalocyanine blue, insoluble azo, soluble azo, dye lake, etc.) and / or metal fine powders are used in order to obtain the concealability of the base. (Aluminum fine powder, brass fine powder, copper fine powder, etc.) and further contains an appropriate plasticizer, stabilizer, mold release agent, solvent and the like.
[0027]
A typical example of such an ink is Sericol RUB ink manufactured by Teikoku Ink Manufacturing Co., Ltd.
[0028]
Further, the concealment layer 14 includes a forgery determination information unit 14a. The forgery discrimination information section 14a displays forgery discrimination information that is optically machine-readable, such as barcodes and OCR characters.
[0029]
According to the present embodiment, the concealment layer 14 displays forgery discrimination information that is optically machine-readable, so that the forgery discrimination information can be machine-read to discriminate the concealment layer 14. Therefore, it can be easily determined whether or not the secret information 12a is leaked.
[0030]
(Deformation)
The present invention is not limited to the embodiment described above, and various modifications and changes are possible, and these are also within the equivalent scope of the present invention.
For example, in the first embodiment, the same effect can be obtained by printing, printing (variable information by a printer or the like) or handwriting on the concealing layer 14 with optically machine-readable counterfeit discrimination information.
Also, the size is not limited to the card size. For example, in the case of a lottery, it may be produced in a postcard size that can be mailed.
Furthermore, a plurality of secret information display sections 12 may be provided, and a plurality of concealment layers 14 may be provided. In that case, you may provide not only on one side but on both front and back sides. Also, a tape type hiding layer and an ink type hiding layer may be combined.
Furthermore, the optically machine-readable counterfeit discrimination information may be printed, printed (variable information by a printer or the like) or handwritten across the concealing layer 14 and the medium substrate 11. By doing so, after removing the concealment layer 14 and stealing the secret information 12a, if the concealment layer 14 is attempted to be forged, the forgery discrimination information continuing to the forgery discrimination information remaining on the base material 11 is hidden. 14 is difficult to forge.
[0031]
【The invention's effect】
As described above in detail, according to the present invention, the concealment layer includes a machine-readable counterfeit discrimination information portion. Therefore, the forgery discrimination information portion can be machine-read to discriminate the concealment layer.
[0032]
According to the present invention, since the forgery determination information part is a magnetic recording part, the forgery determination information can be magnetically recorded. Therefore, the counterfeit discrimination information is not visible.
[0033]
According to the present invention, since the masking layer is a tape, only the masking layer can be manufactured in a separate process.
[0034]
According to the present invention, since the forgery discrimination information part can be machine-read and forgery discrimination of the concealment layer can be performed, it can be easily determined whether or not the secret information is leaked.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of an information hiding medium according to the present invention.
FIG. 2 is a diagram showing a second embodiment of the information hiding medium according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Information concealment medium 11 Medium base material 12 Secret information display part 12a Secret information 13 Adhesive layer 14 Concealment layer 14a Forgery discrimination information part

Claims (3)

A medium substrate;
A secret information display unit that is formed on a part of the medium base and displays secret information;
Information having a concealment layer that is formed at least in the secret information display section, conceals the secret information in an invisible manner, and can be destroyed and removed in a non-reformable manner and includes a machine-readable counterfeit discrimination information section A concealment medium ,
The forgery determination information portion is a magnetic recording portion for magnetically recording forgery determination information, and an optically machine-readable forgery determination information formed on the concealment layer,
The optically readable display of the forgery discrimination information is provided across the concealing layer and the medium substrate.
An information hiding medium characterized by the above. The information concealment medium according to claim 1 ,
The information hiding medium, wherein the hiding layer is a tape. A method of using the information concealment medium according to claim 1 or 2 ,
A method of using an information concealment medium, comprising: machine-reading the forgery discrimination information part and determining whether the secret information is leaked by determining forgery of the concealment layer.

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