JP3840944B2 - Information recording medium having encrypted information - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, a verification pattern having a latent image that cannot be faithfully reproduced by copying is provided in the verification section, in which information that is not desired to be known to anyone other than related parties such as lottery information and personal information is encrypted and recorded. The present invention relates to an information recording medium such as a lottery ticket and a personal information recording card.
[0002]
[Prior art]
Conventionally, information cannot be recognized on information recording media on which individual information such as lotteries, seal certificates, etc. is recorded unless measures are taken to prevent a copy from being easily obtained or a desired light beam is irradiated. Various measures are taken from the viewpoint of preventing counterfeiting and tampering, and are used in various fields.
Among these various measures, there are measures against illegal copying and counterfeiting using a copying machine. As an example, there is a method in which predetermined information is encrypted and separated and recorded with a light color information recording material so that the separated encrypted information cannot be faithfully reproduced. However, this method has a drawback that the information that appears when trying to decrypt the encrypted information by superimposing the encrypted information is very difficult because the encrypted information is light-colored.
In addition, when decoding desired information, registration is performed with guides such as dragonflies provided in the vicinity, but there is a disadvantage that registration is difficult because the guide color is light. Furthermore, when taking a copy with a color copier, if the sensitivity adjustment is a copy under standard conditions, the copy will be copied lighter than the actual copy, but it will be understood that the copy has been copied. If copying is performed with the sensitivity of the machine increased, it will be reproduced as a dark color as a whole, but it will be reproduced very close to the real thing, and there is a risk that the copied material will be recognized and distributed .
In addition, as another measure against illegal copying or forgery using a copying machine, the size of the pixels constituting a plurality of encrypted information that is encrypted and separated is smaller than the size that the copying machine can reproduce. There is also a technique that prevents the encrypted information that is the aggregate from being copied and reproduced. However, in such a technique, since the pixels constituting the encrypted information are very small, the color of the encrypted information, which is an aggregate of them, becomes thin as a whole, and the encrypted information provided separately is registered. There is a drawback that it is very difficult to recognize information that will be decoded when the two are overlapped.
[0003]
[Problems to be solved by the invention]
The present invention has been made in view of the circumstances as described above. By encrypting and including information that is not desired to be known to those other than the related parties, the information can be easily decrypted when required by the related parties. In addition to making it easy to visually confirm the information content, a verification pattern having a latent image that is difficult to reproduce faithfully by copying is provided in part to prevent unauthorized use by copying. An object of the present invention is to provide an information recording medium having the encrypted information.
[0004]
[Means for Solving the Problems]
The present invention has been made to achieve the above-mentioned object, and the invention according to claim 1 is an information recording medium containing encrypted information that can be decrypted and recognized as desired information when superimposed. Encrypted information is respectively formed in a plurality of encrypted information forming units that are arranged apart from each other on the base material, and a base material is interposed between these encrypted information forming units. A separation part for separation is formed, and the other part on the same surface of the base material has a verification pattern having at least a latent image composed of a set of lines difficult to faithfully reproduce by copying and a fixed direction. A plurality of facing lines are formed with the separation part interposed therebetween, and after separating the base materials at the separation part, the separated base materials are overlapped with each other to obtain desired information in the encrypted information forming part. Is decrypted and a verification pattern is provided. From parts is an information recording medium having encrypted information, characterized by manifest latent image.
[0005]
According to a second aspect of the present invention, in the information recording medium having the encrypted information according to the first aspect, the encryption information forming unit positioned upward when decrypting desired information is positioned below the information recording medium. It is characterized in that it has transparency to the extent that the encrypted information of the encrypted information forming unit to be confirmed can be confirmed.
[0006]
Furthermore, the invention according to claim 3 is the information recording medium having the encrypted information according to claim 1 or claim 2, wherein the encrypted information forming unit is positioned at the bottom when decrypting the desired information. Is provided on a white hiding layer.
[0007]
Furthermore, the invention according to claim 4 is the information recording medium having the encrypted information according to any one of claims 1 to 3, wherein the verification pattern includes a latent image and a non-latent image pattern. These are combined, and each is characterized by comprising long and short lines and / or lines having different angles or a combination thereof.
[0008]
Furthermore, the invention according to claim 5 is the information recording medium having the encrypted information according to claim 1, wherein the line is composed of a set of lines having the same width and the same interval.
[0009]
Furthermore, the invention according to claim 6 is the information recording medium having the encrypted information according to any one of claims 1 to 6, wherein either one of the verification unit and the part where the line is formed is provided. Is characterized by having transparency enough to reveal the latent image when the separated substrates are overlapped with each other and the latent image is revealed from the verification unit.
[0010]
Furthermore, the invention according to claim 7 is the information recording medium having the encrypted information according to any one of claims 1 to 6, wherein the separated base material is superposed and hidden from the verification unit. Either a verification pattern or a line formed on a base material positioned underneath when an image is revealed is provided on a white hiding layer.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described, but the present invention is not limited thereto.
[0012]
FIG. 1 shows an outline of an information recording medium 1 having encrypted information according to an embodiment of the present invention.
FIG. 2 shows a state in which desired information 12 is decrypted with the encrypted information inherent in the information recording medium 1 shown in FIG.
On the other hand, FIG. 3 shows the principle of decryption by encrypted information. The decryption of information 12 by superimposing the encrypted information 8 and 9 provided in each of the encrypted information forming units 3 and 4 and these encrypted information is performed. Is shown.
[0013]
The information recording medium 1 contains encrypted information 8 and 9 that can be decrypted and recognized when desired information 12 is superimposed. Basically, the information recording medium 1 is first arranged at a part on the substrate 2. Each of the encrypted information forming units 3 and 4 is formed with encrypted information 8 and 9 that can be decrypted and recognized when desired information 12 is superimposed. A separation portion 7 is formed so that 4 can be separated. In other parts of the substrate 2, a verification unit 5 and a line 6 provided with a verification pattern having a latent image that is difficult to be faithfully reproduced by a copying machine are formed. (See Fig. 1 to Fig. 3)
[0014]
The encrypted information 8 and the encrypted information 9 are formed in each of the encrypted information forming unit 3 and the encrypted information forming unit 4 as shown in FIG. In this example, camouflage information 10 and 11 such as a background pattern and a thin pattern are applied to the encrypted information 3 and 4 and their peripheral parts so that the contents of the information cannot be recognized at a glance. In FIG. 3, since it is enlarged and schematically expressed, it is drawn so that the contents of the respective encrypted information 3 and 4 can be understood. In each encrypted information forming unit, the individual dots of the thin pattern constituting the image are set to about 200 to 300 dpi in halftone dot conversion, and appropriately combined with the hue, brightness, saturation, etc. of the camouflage information and the encrypted information. As shown in FIG. 1 and FIG. 2A, the encrypted information is not visually recognized.
[0015]
When decrypting desired information in the information recording medium having the encrypted information having such a configuration, as shown in FIG. 2, first, the base material 2 is separated by the separation unit 7 (see A in FIG. 2), and then The separated base material 2a may be superimposed on the other base material 2b in register. Then, as shown in FIG. 2B and FIG. 3, the intended information 12 of “EB” is decoded and recognized.
[0016]
In the illustrated example, even if a part of the encrypted information is recognized, the necessary information is recognized only when the encrypted information 8 and 9 are overlapped. There is no particular problem. That is, in the example shown in FIG. 3, the encrypted information forming units 8 and 9 are part of the lottery lottery information forming portion, and “three” formed in the encrypted information forming units 3 and 4. Even if the information that seems to be “3”, “1”, and “1” is found, there is no problem. As shown in FIG. 2B and FIG. 3, the true lottery information in this lottery is decrypted and recognized when the encrypted information forming unit 3 and the encrypted information forming unit 4 are aligned and superimposed. This is because “EB”.
[0017]
If a person who anticipates that there will be such a mechanism performs fraudulent actions such as superimposing encrypted information forming parts in order to know the lottery information before the lottery, first the separation part 7 Some must be separated. If the separating unit 7 separates the base material at that portion, it cannot be restored to the original integrated state again. Therefore, when an illegal act as described above is performed, the act can be easily found.
[0018]
Accordingly, the encrypted information forming units 3 and 4 are arranged at positions where the decryption by the encrypted information 8 and 9 formed therein can be performed only after the base material 2 is separated by the separating unit 7.
[0019]
In the present invention, a verification pattern 14 including a latent image 13 that cannot be faithfully reproduced even if copied on another part of the substrate 2 by a copying machine or the like is formed in the verification unit 5. . FIG. 4 schematically shows the states of the latent image 13 and the non-latent image pattern 15 constituting the verification pattern 14. When the latent image 13 in the verification pattern 14 is actually formed in a lottery or the like, the contents cannot be recognized by only seeing a large number of lines even by visual observation.
[0020]
When revealing the latent image 13 from the verification pattern 14, as shown in FIG. 2, the base material 2 is first separated by the separation unit 7 (see A in FIG. 2), and then the separated one base material 2 a is the other. The registration may be performed on the base material 2b. Then, as shown in FIG. 2B, an intended latent image 13 of “◯” appears and is recognized.
[0021]
Further, a mechanism for revealing the latent image 13 hidden in the verification pattern 14 will be described with reference to FIGS.
First, the latent image 13 and the non-latent image pattern 15 of the verification pattern 14 formed in the verification unit 5 are basically lines having the same width and the same pitch as shown in FIG. However, one of the latent image 13 and the non-latent image pattern 15 is at a position shifted by a half pitch. That is, as shown in FIG. 5, each of the black lines of the latent image 13 is disposed between the black lines of the non-latent image patterns 15 on both sides. These lines are thin enough that they cannot be faithfully reproduced by a copying machine.
Next, a mechanism in which a latent image appears when the line 6 is superimposed on the verification unit pattern 5 will be described with reference to FIG. FIG. 6 is a partially enlarged view of the line 6 and the verification pattern 14. As shown in the figure, when the line 6 is overlapped with the verification portion pattern 14, the line 6 is white in the latent image 13 portion (between the black line and the line) and in the non-latent image pattern 15 portion. The non-latent image pattern 15 is positioned so as to overlap the black portion (above the black line). For this reason, the line 6 and the line 13 of the latent image 13 are connected in the vertical direction in this figure and become relatively dark. On the other hand, in the portion of the non-latent image pattern 15, the line 6 overlaps with the line of the non-latent image pattern 15, the white portion remains and becomes whitish, and the portion of the latent image 13 is darker than the non-latent image pattern 15. Contrast with the non-latent image pattern 15 is added, and the latent image 13 appears and can be recognized. Specifically, as shown in FIG. 2B, a latent image “◯” appears and it can be seen that the information recording medium is genuine. On the other hand, since a copy copied from a real information recording medium does not faithfully reproduce the verification pattern, particularly the latent image, the latent image does not appear even if the line is overlaid there. Prove.
The encrypted information forming unit, the verification unit, and the line are designed and arranged so that the encrypted information and the latent image are clearly decrypted or manifested only when the separated base materials are overlapped as described above. It is.
[0022]
Further, the latent image and non-latent image pattern of the verification pattern may be configured by changing the length and angle of each line in addition to those described above. However, in that case, it is necessary to change the angle of the line so that the latent image appears when the line is superimposed on the verification pattern.
[0023]
As the material of the base material 2 described above, transparent or translucent polyester, vinyl chloride, polypropylene or other plastic film, or transparent paper such as tracing paper, further encryption information forming part, verification pattern A base material or the like in which the forming portion, the forming portion of the line, etc. have at least transparency can be applied. Its thickness is about 50 to 200 micrometers, and it has moderate rigidity and bending characteristics.
[0024]
The encrypted information 8, the encrypted information 9, and the verification pattern 14 have camouflage information that is composed of fine constituent elements such as a background pattern and a fine pattern so as to make the presence and content of the encrypted information 8 and the verification pattern 14 less visible. 10 and 11 may be provided if necessary. In addition, the information recording material and information recording method for forming each information and pattern are not particularly limited. For example, information recording materials such as printing ink and thermal recording ink, offset printing, silk printing, and gravure printing. An appropriate one may be selected from general-purpose information forming means such as thermal recording.
[0025]
Furthermore, when recording encrypted information, verification patterns, and lines, the encrypted information should be black, and the encrypted information positioned below when decrypting the desired information may be provided on the white concealment layer. preferable. With such a configuration, the decoded information can be recognized more clearly with high contrast.
[0026]
In addition, in order to more clearly recognize the decryption of the desired encryption information and the manifestation of the latent image in the verification unit, the base material positioned in the lower part of the base material separated by the separation unit is made of a highly reflective material. You may make it form.
[0027]
Furthermore, the order in which the base materials are superimposed when decoding the desired information and revealing the latent image in the verification unit is not particularly limited. Therefore, the formation of the encrypted information forming unit, the verification pattern, or the line on the concealing layer or the highly reflective material described above is performed between the base materials during the decryption of the encrypted information and the manifestation of the latent image in the verification unit. What is necessary is just to select suitably in consideration of an overlaying order.
[0028]
【The invention's effect】
Since the present invention is as described above, the encrypted information can be decrypted and the latent image can be obtained by a simple operation by separating a part of the base material and overlaying the encrypted information forming units or the verification pattern and the line. Can be realized. The authenticity of the information recording medium can be determined by confirming that the latent image in the verification pattern appears. In addition, because the verification pattern is made up of a collection of thin lines that cannot be faithfully reproduced by a copying machine, the lines become thin on the copy or the shape of the lines collapses. However, the latent image does not appear, and it can be easily determined that the product is a counterfeit product.
Furthermore, since the base material has to be separated when decrypting the information, it is possible to easily find the fraud when the fraud is performed as described above.
Furthermore, because the part that makes faithful copying difficult and the part that decrypts encrypted information are separated, a part of the encrypted information is formed in a light color, or a fine structure whose size and thickness cannot be reproduced by a copier Compared to this type of information recording medium of the related art formed by a child or a thin line, it becomes easier to register at the time of information decoding, and the decoded information is clearly recognized.
[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 state when decrypting encrypted information inherent in an information recording medium and revealing a latent image from a verification pattern, decrypted information, and a revealed latent image;
FIG. 3 is an explanatory diagram showing encryption information provided in each of the encryption information forming units and a state of decryption using the encryption information.
FIG. 4 is an explanatory diagram of a formation state of a latent image and a non-latent image pattern constituting a verification pattern.
FIG. 5 is a partially enlarged explanatory view showing a configuration of a verification pattern.
FIG. 6 is an explanatory diagram showing a mechanism for revealing a latent image from a verification pattern;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Information recording medium 2, 2a, 2b Base material 3, 4 Encrypted information formation part 5 Verification pattern 60,000 lines 7 Separation part 8, 9 Encryption information 12 Information 13 Latent image 14 Verification pattern 15 Non-latent image pattern

Claims (7)

This is an information recording medium that contains encrypted information that can be decrypted / recognized as desired information when it is superimposed, and it is encrypted in a plurality of encrypted information forming units that are located apart from each other on the base material. Each piece of information is formed, and a separation part for separating the base material is formed between these encrypted information forming parts, and a copy is made on the other part on the same surface of the base material. A verification pattern having at least a latent image composed of a set of lines that are difficult to faithfully reproduce and a plurality of lines composed of a plurality of lines oriented in a certain direction are formed across the separation portion, and the separation portion After separating the materials, when the separated base materials are overlapped, desired information is decrypted in the encrypted information forming unit, and a latent image is revealed from the verification unit provided with the verification pattern An information recording medium having encrypted information. 2. The encryption information forming unit positioned on the upper side when decrypting desired information has transparency that allows the encryption information of the encrypted information forming unit positioned on the lower side to be confirmed. An information recording medium having the encryption information described in 1. 3. The information record having encrypted information according to claim 1, wherein an encrypted information forming unit positioned below when decrypting desired information is provided on a white concealing layer. Medium. The verification pattern includes a combination of a latent image and a non-latent image pattern, and each of the verification patterns includes long and short lines and / or lines having different angles or a combination thereof. An information recording medium having the encrypted information according to any one of items 3 to 4. 2. The information recording medium having encrypted information according to claim 1, wherein the line is composed of a set of lines having the same width and the same interval. Either one of the verification part and the part where the line is formed can reveal a latent image when separating the base material by the separation part and then superimposing the separated base materials to reveal the latent image from the verification part. 6. The information recording medium having encrypted information according to claim 1, wherein the information recording medium has a degree of transparency. When the separated base materials are overlapped with each other and the latent image is revealed from the verification section, either the verification pattern or the line formed on the base material positioned below is provided on the white hiding layer. An information recording medium having encrypted information according to any one of claims 1 to 6.

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