JP3826692B2 - Information recording medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is an information recording medium in which information that is not desired to be known to anyone other than the related parties, such as lottery information, personal identification number, personal information, etc., is encrypted and recorded. The present invention relates to an information recording medium such as a lottery ticket or a personal information recording card in which the inherent encrypted information is not reproduced as it is.
[0002]
[Prior art]
Conventionally, there are information recording media such as lottery information, personal identification number, lottery information, personal identification information, lottery, personal identification number application forms, personal information recording cards and the like on which information that is not to be known is recorded. Various measures have been made to prevent the forgery and tampering of these information recording media from the viewpoint of preventing counterfeiting and tampering, such as making it possible for the parties concerned to confirm the contents of information only when necessary, and making it difficult to obtain copies. It is used in various fields.
[0003]
Among these measures, there are measures against illegal copying and forgery using a copying machine. As an example, there is a method in which information on an information recording medium is encrypted and information is recorded with a light color information recording material so that the encrypted information cannot be reproduced faithfully. However, in this method, since the encrypted information is light-colored, there is a drawback in that it becomes very difficult to recognize the information that appears when the encrypted information is superimposed and decrypted.
In addition, when decoding desired information, it is matched with a guide such as a registration mark provided in the periphery, but there is a drawback that it is difficult to register because the color of the guide is light.
Furthermore, when taking a copy with a color copier, if the sensitivity is the standard condition, the copy will be lighter than the original, and it will be understood that it has been copied. It will be reproduced and will be very close to the real thing.
[0004]
As another measure against illegal copying or counterfeiting using a copier, the size of the pixels that make up the encrypted information is smaller than the size that the copier can reproduce, and the encrypted information that is the set There is also a technology that prevents copying and reproduction.
However, in such a technique, since the pixels constituting the encrypted information are very small, the color of the encrypted information that is a collection of them becomes thin as a whole, and the encrypted information is overlaid with the registration in mind. The disadvantage is that it is very difficult to recognize information that will sometimes be decoded.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the circumstances as described above, and encrypts information that is not desired to be known to those other than the related parties, and makes the information contents easily decrypted when necessary by the related parties. It is an information recording medium that can be visually confirmed. In particular, it is intended to provide an information recording medium that does not reproduce even the encrypted information contained therein even if copied by a copying machine. To do.
[0006]
[Means for Solving the Problems]
The present invention has been made to achieve the above-mentioned object, and the invention of claim 1 is an information recording medium containing encrypted information that can be decrypted and recognized as desired information when superimposed. At least one encryption information is provided in the encryption information forming unit of the first base material, and at least one encryption information of the other encryption information is provided in the encryption information forming unit of the second base material. At the same time, the second base material is slightly shifted in registration so that the encrypted information forming unit covers the encrypted information forming unit of the first base material and the desired information is not decrypted. An information recording medium characterized in that the information recording medium is attached to a first base material in a state where it cannot be restored when peeled.
[0007]
Further, the invention of claim 2 is characterized in that at least one of the encrypted information forming portions of the base material is transparent so that the encrypted information positioned under the encrypted information can be confirmed. The information recording medium according to claim 1.
[0008]
Furthermore, the invention of claim 3 is characterized in that the encrypted information is black, and the encrypted information positioned below when decrypting the desired information is provided on the white concealment layer. An information recording medium according to claim 2.
[0009]
Furthermore, in the invention of claim 4, the encrypted information positioned in the lower part when the desired information is decrypted is formed with a higher reflectance than the information recording material of the encrypted information positioned in the upper part. The information recording medium according to claim 1, wherein the information recording medium is a recording medium.
[0010]
Furthermore, the invention of claim 5 is characterized in that the second base material covers the half or more of the encrypted information formed on the first base material. The information recording medium according to any one of claims 1 to 4.
[0011]
Furthermore, the invention according to claim 6 is the information recording medium according to any one of claims 1 to 5, wherein the second substrate is adhered to the first substrate by a brittle seal. .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described, but the present invention is not limited thereto.
[0013]
FIG. 1 schematically shows an information recording medium 1 according to an embodiment of the present invention.
FIG. 2 shows the structure of the substrates 2 and 4 constituting the information recording medium 1 shown in FIG. 1 and one process of manufacturing the information recording medium 1.
On the other hand, in FIG. 3, the encrypted information 7 and 8 provided in each of the encrypted information forming units 3 and 5 of the base materials 2 and 4 constituting the information recording medium 1 and the decryption of the desired information 11 by these information are shown. The situation is shown.
[0014]
The information recording medium 1 contains encrypted information that can be recognized and recognized when the information recording medium 1 is superposed. Basically, at least one encrypted information 7 is encrypted by the first base material 2. Provided in the information forming unit 3, at least one of the other encrypted information 8 is provided in the encrypted information forming unit 5 of the second base material 4 (see FIG. 3), The base material 4 is shifted slightly so that the encrypted information forming unit 5 covers the encrypted information forming unit 3 of the first base material 2 and desired information is not decrypted. When peeled, it is stuck to the first base material 2 at the sticking part 6 in a state where it cannot be restored (see FIGS. 1 and 2).
[0015]
Here, FIG. 2 is particularly for explaining one process of manufacturing the information recording medium 1, and the sticking part 6 provided on the second base 4 or the second base 4 is connected to the first base 4. The encrypted information forming unit 3 in the information recording medium 1 showing the state when it is attached to the substrate 2 is not actually observed, but is shown in this figure so that the manufacturing process is easy to understand. The part is shown with a broken line together with the leader line. Actually, as shown in FIG. 1, the encryption information forming part of the first base material 2 and the sticking part of the second base material 4 are hidden by the second base material 4 superimposed on the upper part. Not observed.
[0016]
On the other hand, the encrypted information 7 and the encrypted information 8 are formed in each of the encrypted information forming unit 5 and the encrypted information forming unit 3 as shown in FIG. These encrypted information 7 and 8 and their peripheral parts are provided with camouflage information 9 and 10 such as background patterns and thin patterns so that the contents of the information cannot be recognized at a glance. In FIG. 3a, since it is enlarged and schematically expressed, it is drawn so that the contents of the respective encrypted information 7 and 8 can be understood. If each fine component of the thin pattern constituting the camouflage information is about 200 to 300 dpi in terms of halftone dots, and a combination of the hue, brightness, saturation, etc. of the camouflage information and the encrypted information is appropriately selected, each encryption The encrypted information forming unit does not recognize the encrypted information as shown in FIGS.
[0017]
Only when the second base material 4 is peeled from the first base material 2 and the encrypted information forming section 3 is superimposed on the encrypted information forming section 5 as shown in FIG. The intended information 11 “EB” is decoded and recognized.
[0018]
On the other hand, as described above, the second base material 4 is configured so that the encrypted information forming unit 5 covers the encrypted information forming unit 3 of the first base material 2 and desired information is not decrypted. The registration is slightly shifted (in the example shown in FIGS. 1 and 2, the first base material 4 is located above the registration position), and once peeled off, it is stuck on the first base material 2 in an unrecoverable state. Keep it.
[0019]
With such a configuration, as a countermeasure against illegal copying using a copying machine, a light information recording material can be used so that encrypted information cannot be faithfully copied or reproduced even if copied. The size of the pixels constituting the encrypted information has been set to be smaller than the size that cannot be reproduced by the copying machine. However, in the present invention, such measures are not necessarily included in the encrypted information. It is not necessary to give it.
[0020]
As shown in FIG. 2, the sticking method is a method of sticking firmly with the sticking portion 6 made of an adhesive, or a brittle seal in which an adhesive is applied to a fragile substrate as shown in FIG. The method of sticking with the sticking part 16 which consists of a seal seal etc. which put the notch for promoting destruction is applicable. Once the second base material 4 is peeled off from the first base material 2 by these sticking methods, it is stuck in an unrecoverable state.
[0021]
With such a configuration, when desired information is decoded and its content is confirmed, the trace always remains. That is, when the third party tries to know information contained in advance or to copy or duplicate this information recording medium for an illegal purpose, the second base material 4 must be peeled off once. Since the first base material 2 and the second base material 4 are partially broken or the seal is broken at the time of peeling, the trace is in the vicinity of the sticking part in the case of an illegal operation as described above. Will remain.
[0022]
On the other hand, at least one of the encrypted information forming portions of the base material needs to have transparency to the extent that the encrypted information positioned below can be confirmed when the information is decrypted. Therefore, transparent or semi-transparent polyester, vinyl chloride, polypropylene, or other plastic film, or synthetic paper, tracing paper, etc. in which the encryption forming part is partially transparent or semi-transparent is applied as the substrate. . Its thickness has moderate rigidity and bending characteristics of about 50 to 200 microns.
[0023]
In addition, camouflage information 9 and 10 composed of fine constituent elements such as a background pattern and a thin pattern are provided on and around the encrypted information 7 and the encrypted information 8 so as to make their presence and contents less clear. It is desirable to keep it. The information recording material and information recording method for forming each information are not particularly limited. For example, information recording materials such as printing ink and thermal recording ink, offset printing, silk printing, gravure printing, thermal recording, etc. An appropriate one may be selected from the general-purpose information forming means.
[0024]
When recording the encrypted information, it is preferable that the encrypted information is black, and the encrypted information positioned below when the desired information is decrypted is provided on the white concealment layer. With such a configuration, the decoded information can be recognized more clearly with high contrast.
[0025]
Further, the encrypted information that is positioned at the bottom when the encrypted information is superimposed may be formed of an information recording material having a high reflectance so that the decryption of the desired information can be recognized more clearly. .
[0026]
The order of overlaying the base materials when decoding the desired information is not particularly limited. Therefore, the formation of encrypted information composed of the above-described concealing layer and information recording material having a high reflectivity, and consideration of the visibility (transparency) of the lower information in the encrypted information forming unit are based on information decryption. What is necessary is just to select suitably in consideration of the order of superimposition of a material.
[0027]
【The invention's effect】
Since the present invention is as described above, it is possible to decrypt the encrypted information with a simple operation by simply peeling the second base material from the first base material and superimposing the registered information forming portions together. Become.
Also, when trying to illegally obtain a copy by a copying machine or to confirm information inherently illegally, the second base material must be peeled from the first base material. In that case, a trace when the second base material is peeled will always remain in the vicinity of the sticking portion, and the presence or absence of an unauthorized operation can be confirmed by the presence of the trace.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram showing a configuration and a manufacturing process of the information recording medium shown in FIG. 1;
FIG. 3 is an explanatory diagram showing encryption information and a situation of decryption using the encryption information.
FIG. 4 is an explanatory diagram according to another embodiment of the present invention.
[Explanation of symbols]
1, 21 Information recording medium 2 First base material 3, 5 Encrypted information forming unit 4 Second base material 6, 16 Adhering unit 7, 8 Encrypted information 9, 10 Camouflage information 11 Information

Claims (6)

It is an information recording medium containing encrypted information that can be decrypted and recognized as desired information when superimposed, and at least one encrypted information is provided in the encrypted information forming unit of the first base material, At least one encryption information of the encryption information is provided in the encryption information forming unit of the second base material, and the encryption information forming unit of the second base material is the encryption information of the first base material. Information that is slightly offset so as to cover the formation part and that desired information is not decoded, and is stuck to the first base material in a state where it cannot be restored once peeled off recoding media. 2. The information recording according to claim 1, wherein at least one of the encrypted information forming portions of the base material is transparent to a degree that the encrypted information positioned below the information can be confirmed when the information is decrypted. Medium. 3. The information recording medium according to claim 1, wherein the encrypted information is black, and the encrypted information positioned below when decrypting desired information is provided on a white concealment layer. . The encrypted information positioned at the bottom when decrypting desired information is formed of a material having a higher reflectance than the information recording material of the encrypted information positioned at the top. Item 4. The information recording medium according to Item 3. 5. The second base material is characterized in that the encryption information formed thereon covers more than half of the encryption information formed on the first base material. Information recording media. 6. The information recording medium according to claim 1, wherein the second substrate is adhered to the first substrate by a brittle seal.

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