JPH082157A - Forgery preventing method - Google Patents

Abstract

PURPOSE:To eliminate the possibility of a large quantity of forgery by mixing a non-uniform special material with an object to be forged to provide mutually different characteristics to the whole. CONSTITUTION:A special material is non-uniformly applied to a paper sheet 1 and the coated paper sheet is scanned and detected, for example, by a sensor 2 measuring the partial magnetic permeability of the paper sheet 1 to obtain a detection pattern. The sensor 2 scans the paper sheet 1 in respective X- and Y-directions to obtain the non-uniform pattern data applied to the paper sheet 1 to register the same in a file device 9. When the genuinness of the paper sheet, a seal or a carved product is confirmed another day, the coating.mixing amt. pattern of the special material is again measured by a sensor having characteristics same to those of the sensor 2 used at the time of the registration to the file device 9 and comared with the result at the time of the registration to the file device 9 to judge genuinness.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing forgery of securities and securities such as bonds, seals, works of art, etc.

[0002]

2. Description of the Related Art Conventionally, securities such as securities and bonds have been partially counterfeited. For example, a general method is a forgery prevention method using a fine printing pattern, but in this respect, since the printing technology in the world has improved, almost no anti-counterfeit effect can be expected. However, even if it can be expected, it is only having a non-organizational individual level of anti-counterfeiting ability. In addition, there is a method of printing the magnetic ink on a specific place such as a securities and detecting that it is printed with the magnetic ink in order to inspect whether it is forgery, but this method is also easy for those who know the contents to forge. Is possible. As another forgery prevention method, for example, there is a method described in JP-A-5-278372. In this method, a transparent or semi-transparent reversible thermosensitive coloring layer that develops color at a first heating temperature and then decolors at a second heating temperature different from this is provided on a substrate, and a layer thereabove. It is printed on the stock so that the authenticity of the securities can be easily judged when the securities are used.

[0003]

As described above, although the method of preventing forgery by a fine print pattern, the method of preventing forgery by printing magnetic ink, the method of preventing forgery having a coloring and erasing layer, etc. have been conventionally performed. The fine pattern printing technology and the anti-counterfeiting method for detecting the presence of a special material such as magnetic ink will eventually lose their effect as the technology advances. In addition, a forgery prevention method having a color developing and erasing layer,
There is no anti-counterfeiting effect for those who have a certain level of technology and know the manufacturing method. The purpose of the present invention is to
By solving these conventional problems, it takes too much time for counterfeiting, and there is no economic advantage, there is virtually no possibility of counterfeiting, and it is related to the progress of the world in technology and materials. An object of the present invention is to provide a forgery prevention method capable of preventing forgery without a problem.

[0004]

In order to achieve the above object, the anti-counterfeiting method of the present invention comprises (a) a paper sheet or a seal,
Special materials are applied or mixed non-uniformly on objects such as engravings, and when the paper sheet is issued or stamps are created or sold, the amount of special materials applied and mixed by an external sensor is used. By performing multidimensional measurement of the pattern and registering the pattern itself, or the calculation result using the pattern, or the encryption result in the file or the paper sheet, the seal, the engraving product, etc. at a later date. When verifying the authenticity of the paper sheet, seal, engraved product, etc., the special material application / mixing amount pattern is measured by the sensor having the same characteristics as the sensor used at the time of registration.
The feature is that the authenticity is determined by re-measurement of the measured value and comparison with the result at the time of registration. In addition, (b) special materials include ferrite magnetic powder, amorphous magnetic material, iron pieces,
It is also characterized by mixing an appropriate amount of one or more kinds of metal pieces such as aluminum pieces, copper pieces, and nickel pieces. further,
(C) A counterfeit prevention sheet for forming a mixture of special materials applied as a part of a paper sheet to prevent forgery.
It is also characterized in that it is an ingot-shaped block for fixing inside a seal, a seal, or an engraving.

[0005]

In the present invention, a special material (the conventional magnetic ink or the like can be used) whose presence amount can be confirmed from the outside is used instead of the one that has conventionally been used to detect the presence of the special material. The coating amount or the mixing amount is intentionally made uneven. That is, the application or mixing means of the special material makes an irregular pattern which can be detected from the outside inside the paper sheet or the seal stamp for the purpose of preventing forgery. This non-uniformity should be changed according to the temperature, time, shape and direction of the mixed material at that time, or the applied amount, applied place, mixed amount, and mixed place should be changed by a random pattern. To do. Forgery is prevented by measuring and registering these non-uniform patterns at the time of issuance and reconfirming them at a later date. The object of anti-counterfeiting according to the present invention is only one thing in the world and a document, and all of them can be identified by a certificate number, a name (seal stamp, etc.) or the like. Therefore, it is not suitable for preventing forgery of bills and the like. That is, for banknotes, 1 can usually be identified by the serial number.
This is because the forgery prevention is not performed for each sheet and the same forgery prevention method is applied to all banknotes of the same amount.

Irregular patterns are created with extremely low probability of occurrence of the same pattern by use of randomness or random number processing, and therefore it is very difficult to forge or copy. At least the real thing is at hand, and even if the sensor system used at the time of registration is not prepared, even an approximate pattern cannot be generated. In addition, if the special material to be mixed has a three-dimensional shape, it is considered that nondestructive copying is impossible even if the real material is at hand. This can be seen how difficult it is to reproduce the three-dimensional irregularity, for example, considering that the arrangement and direction of a plurality of irregularly shaped stone pieces that sink to the bottom of the water cannot be reproduced. In addition, a flat sheet coated to prevent these forgery or a three-dimensional object mixed with a special material is formed into an ingot-shaped block,
It is possible to separate it from the production process of an object for anti-counterfeiting (form such as securities, stamp, engraving). Even in this case, if the forgery prevention seal or ingot block is fixed to the main body when the forgery prevention target is completed and registered,
It is possible to prevent forgery. In addition, a system that does not require access to the registration file at the time of confirmation at a later date by performing a predetermined calculation on the sampling pattern at the time of registration and printing or recording the coded code result on the paper sheet It can be constructed. Further, by registering a file obtained by performing a predetermined calculation in the sampling pattern at the time of registration in the file, it is possible to reduce the file size. Further, with encryption processing, the reliability of forgery prevention is improved.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 (a) and 1 (b) are perspective views of a forgery prevention device and a characteristic thereof showing a first embodiment of the present invention.
The conceptual diagram of the part and the characteristic which register and confirm the anti-counterfeiting apparatus of the paper sheet of securities etc. is shown. Paper sheet 1 of FIG. 1 (a)
The special material 4 is non-uniformly applied to the sheet, and the sensor 2 for measuring the partial magnetic permeability of the paper sheet 1 scans and detects the special material 4 to obtain the graph shown in FIG. A detection pattern is obtained. In FIG. 1B, a magnetic permeability distribution curve in the X direction is shown for each constant distance in the Y direction, and here, 3 is used.
Only two curves (middle curve in bold) are shown. The sensor 2 can scan this in each of the X and Y directions to obtain the non-uniform pattern information applied to the paper sheet 1. 2 (a) and 2 (b) are perspective views of a forgery prevention device and its characteristics showing a second embodiment of the present invention, in which the special material 4 is mixed in the seal 3 unevenly. For example, a conceptual diagram of a device and characteristics for obtaining non-uniform pattern information, which is detected by a sensor-2 for measuring magnetic permeability, is shown. The special material 4 is mixed inhomogeneously in the stamp 3 of FIG. 2 (a), and the sensor 2 measures the magnetic permeability at every arbitrary angle of the sliced surface of the stamp 3 in the height direction. By performing scanning detection, a detection pattern such as the graph shown in FIG. 2B is obtained. In FIG. 2 (b),
A magnetic permeability distribution curve for each angle θ is shown at regular intervals in the height Z direction, and here, only three curves (the central curve is shown by a thick line) are shown. The sensor 2 uses Z, θ
By scanning in each direction, non-uniform pattern information mixed in the stamp 3 is obtained. Although FIG. 2 shows the case where the seal stamp is counterfeited, the counterfeiting prevention can be performed in the same manner even for a work of art (for example, a sculpture).

FIG. 3 is a block diagram of an apparatus for authenticating / verifying a paper sheet according to an embodiment of the present invention. FIG. 3 shows a device for authentic registration and confirmation for counterfeit prevention. The registration / confirmation device 5 including the sensor-2 moves the paper sheet 1 by the paper sheet conveying device 7, continuously obtains the output of the sensor-2, and outputs it to the processing device 8 via the pattern input circuit 6. -Enter. Pattern input circuit 6
For example, an A / D converter or the like is used. The processing device 8 uses the registered pattern information or pattern in the file device 9 that it has or the file device 9 that the host processing device 10 at a remote place has, and , And sends the data as the result of the encryption processing. When the special material is applied to the paper sheet, it may be applied so as to be non-uniform, but as a method of mixing the special material into the cube, a kneaded wood, a synthetic resin, a molten metal or the like is used as a base material. As a part of manufacturing a seal or engraving product, a special material is mixed. In addition, when registering the measurement results, it is possible to register the values obtained by finely sampling the measurement pattern, but since the amount of information is large, a method of registering only the peaks and valleys of the pattern or a predetermined value It is possible to use a method of registering the calculated value by multiplication or the like, or a method of registering the code result by performing an encryption process.

In FIG. 3, a processing unit 11 in the host processing unit 10 controls the host processing unit 10, and controls data transmission / reception with the processing unit 8 and control of the file unit 9. Also do. At a later date, when an unknown paper sheet appears and the authenticity is determined, the paper sheet is inserted into the registration / confirmation device 5 and the special material 4 which is uneven as in the registration operation is used.
The output pattern of the sensor-2 is sampled. If the pattern, the calculation result, or the encryption result is within a certain error range from the data at the time of registration, the unknown paper sheet 1 is determined to be genuine. Here, when the special material 4 applied to the paper sheet 1 is applied nonuniformly, it is more effective to devise such that the location of the special material 4 cannot be easily seen. For example, if a simple ink having the same hue as that of the special material is applied at the same time, it looks as if it is applied to the entire surface of the paper sheet, the seal or the engraved product, which makes counterfeiting difficult. Further, it is also effective that the application surface of the special material is an inner layer portion between the front surface and the back surface of the paper sheet 1. Further, there is a method in which the forgery prevention seal is attached to the form portion for general printing by forming the seal-shaped paper sheet instead of forming the entire surface of the form only on the coated portion of the special material 4. According to this method, the productivity of the form part is improved, so that the running cost of the system can be reduced. In this way, by applying the special material unevenly, registering the pattern, and confirming,
Since each piece of data has its own data, forgery becomes extremely difficult.

In this case, in order to perform forgery, a genuine paper sheet is obtained and a sensor-2 having the same characteristics as those of the registration / confirmation device 5 used in the system of the present invention is made to imitate the genuine article. Since it is necessary to create a non-uniform pattern, forgery is a task that is almost impossible. FIG. 2 shows an example in which the special material 4 is mixed nonuniformly inside a three-dimensional object such as a seal stamp. In this case, a high degree of non-reproducibility can be obtained in the fixed state (direction, interval) of the special material 4 by mixing a linear or planar non-uniform material as the special material 4 in addition to a mere powder. So counterfeiting is completely impossible. As the special material 4, magnetic materials (ferrite powder, ferrite pieces, iron powder, iron wire, iron pieces) are generally effective, but general metal materials (aluminum, copper, etc.) for utilizing the difference due to eddy current. ) Is also effective. In addition, the method of mixing the special material inside the three-dimensional object can be fixed inside the carving etc. by making the forgery prevention function part (the part where the special material is mixed) independent as one ingot-shaped block. is there. This is a practically convenient method similar to the sealing described above.

In the above embodiments, the authenticity is judged by accessing the file device 9 at the time of confirming the authenticity and comparing it with the registered data, but the value of the paper sheet is relatively low. In some cases, there is a system that wants to eliminate access to the file device 9. In this case, the pattern obtained at the time of registration is subjected to a predetermined calculation, for example, the arithmetic operation between the pattern values at a plurality of specific places, the sum of products operation, or the like, or the encryption result thereof. There is a method of recording such as printing on itself. Thus, at the time of confirmation at a later date, the authenticity may be determined by determining whether the calculation result from the pattern collection result or the encryption result thereof matches the result recorded on the paper sheet. In this case, the criminal can obtain the registration / confirmation device by some method to make the forgery, so that the encrypted portion must be handled with strict care. For example, a key code download from the bank host is required. Of course, the registration / confirmation device can be a dedicated device for registration or confirmation.

[0012]

As described above, according to the forgery prevention method of the present invention, since a non-uniform special material is mixed in the forgery object to give different characteristics to the whole, a large amount of The possibility of forgery disappears. Also, in the case of counterfeiting, since it is necessary to obtain a genuine article and a device for measuring the characteristics of the genuine article and make a characteristic similar to that, it takes time and effort even forgery of a flat paper sheet, and it is economical due to forgery. No benefit. In particular, when three-dimensional anti-counterfeiting is performed, there is an advantage that the possibility of forgery is virtually eliminated because a non-uniform special material is mixed for each vertical and horizontal angle. It is possible to realize an absolute prevention method that is not related to the progress of the printing technology and the printing technology.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of a special material measuring device applied to a paper sheet and measured characteristics according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram of a special material measuring device mixed in a seal stamp showing an embodiment of the present invention and measured characteristics.

FIG. 3 is a block diagram of a genuine / counterfeit registration / confirmation device for a sheet according to an embodiment of the present invention.

[Explanation of symbols]

1 ... paper sheet, 2 ... sensor, 3 ... seal stamp, 4 ... special material, 5 ...
Registration / confirmation device, 6 ... Pattern input circuit, 7 ... Paper transport device, 8, 11 ... Processing device, 9, 19 ... File device, 10 ... Host processing device.

Claims (3)

[Claims] 1. A non-uniform coating or mixing of a special material on an object such as a paper sheet, a seal or an engraving product, and the external material is provided when the paper sheet is issued or when the seal or engraving product is produced or sold. Multi-dimensionally measure the coating / mixing amount pattern of the above-mentioned special material by using the sensor, and the pattern itself or the pattern is measured.
By registering the calculation result or encryption result using a file in the file or the paper sheet, seal, engraving product, etc.,
At a later date, when confirming the authenticity of the paper sheet, seal, engraving, etc., the sensor of the same characteristics as the sensor used at the time of registration was used to re-measure the coating / mixing amount pattern of the special material. A method for preventing forgery, characterized by determining authenticity by comparing with. 2. The forgery prevention method according to claim 1, wherein the special material is one or more kinds of metal pieces such as ferrite magnetic powder, amorphous magnetic material, iron pieces, aluminum pieces, copper pieces, and nickel. A forgery prevention method characterized by being a mixture. 3. The anti-counterfeiting method according to claim 1 or 2, wherein a special material is applied and mixed to prevent the forgery, and the anti-counterfeiting seal is formed as a part of a paper sheet. , Or an ingot-shaped block for fixing inside a seal, an engraved article, or the like.