JP2003063177A - Security medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a security medium for judging bills such as a prepaid bond, a security, and an evidence bill to be valid. SOLUTION: The security medium contains small pieces to be detected composed of an electromagnetically sensitive substance and a base material composed of a heat melting substance, and the pieces are dispersed irregularly in the base material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security medium having a function of preventing counterfeiting such as gift certificates, securities, and evidence securities, and in particular, the distribution state of detected small pieces distributed in the medium is determined by electromagnetic means. The present invention relates to a detectable security medium and a method for forming the same.

[0002]

2. Description of the Related Art In recent years, prepayment certificates such as gift certificates, gift certificates, securities such as banknotes and checks, cards such as credit cards, and evidence securities such as driver's licenses (hereinafter these are also simply referred to as securities. Forgery and alteration of the name) is a problem. Therefore, a security medium capable of discriminating authentic securities as a counterfeit product or a counterfeit product, a genuine / counterfeit discriminating method using information on the security medium as an index, and an apparatus for implementing the method have been proposed.

For example, a method has been proposed in which a watermark is put in a security medium as an index for authenticity recognition, or a hologram transfer foil is attached to a part of the surface of the security medium. According to these methods, confirmation of authenticity is mainly performed by visually observing this mark.

Further, for example, a security medium in a form in which small pieces that can be detected by electromagnetic means, such as ultrafine metal fibers and fine magnetic elements, are distributed and contained in the securities substrate itself, and such a security medium is used as an index. Discrimination methods and devices for their implementation are also known. According to the security medium, the discriminating method and the discriminating apparatus based on these electromagnetic detection methods, metal base material or the like as a recognition marker is present in the security medium itself, that is, the security medium existing over almost the entire surface area of the securities. The presence or absence of a marker as an index and the distribution state thereof are detected by allowing the presence of a marker and detecting these metal fibers by a microwave or a magnetoelectric conversion element.

[0005]

However, in the case of discriminating whether or not the securities are authentic by using the above-mentioned security medium, there are various problems as described below. There is.

For example, in the case of a security medium which is premised on a visual inspection by providing a watermark or hologram layer on the surface of securities, the skill of the person in charge of discriminating is in view of the certainty, stability and speed of the inspection. Depends on the degree. Furthermore, there is a problem that the operation cost is high because human resources must be allocated for the inspection.

Further, in a security medium in which a metal fiber or the like as an identification mark is present and the presence or absence thereof is used as an index, the metal fiber or the like is mixed into the securities base material itself, and therefore necessary for discrimination in some cases. Since it is not possible to mix in an amount sufficient to obtain various detection signal intensities, there is a problem in that the accuracy of discrimination cannot be increased.

Further, in consideration of various conditions such as material and thickness of securities, a manufacturing process corresponding to each condition and an apparatus for carrying out the same are required, which causes a problem of high manufacturing cost. It was

The present invention has been made in view of the above problems, and an object of the present invention is to easily determine whether or not a security medium, that is, securities including the security medium is authentic. Another object of the present invention is to provide a security medium that has a configuration that can be reliably performed and that is easy to manufacture and operate.

[0010]

In order to achieve the above-mentioned problems, according to the security medium of the present invention, the electromagnetically sensitive substance, which is a small piece to be detected, is randomly dispersed in the heat-meltable substance as the base material. It has a different configuration.

Therefore, according to the configuration of the security medium of the present invention, the medium to be detected is not formed by dispersing the detected small pieces on the base material such as securities, but as a medium separate from the base material of securities. Form. Therefore, it is possible to temporarily form this security medium on the base film and then fix the security medium formed on the base film to the surface of the required securities by welding. In that case, the position and size of the security medium can be appropriately changed as desired, regardless of the material, state, etc. of the securities to be fixed.

Therefore, it is possible to reduce the material constituting the security medium, which contributes to resource saving and cost reduction.

Here, "irregularly dispersed" means that in each security medium fixed to individual securities, the unit volume of the detected small pieces mixed in the base material, that is, the heat-meltable substance. Although the number of contained particles per unit, that is, the distribution density is almost the same, the three-dimensional distribution position of the detected small pieces dispersed in the base material, that is, the existence position, is biased for each security medium. means. Therefore, since there is virtually no distribution of the detected small pieces, the distribution state of the detected small pieces specific to each security medium is detected by, for example, an electromagnetic means, and then the distribution state is detected. It is possible to determine that the security medium is authentic, that is, that the securities to which the security medium is fixed is not a counterfeit product or a counterfeit product by using the information of (1).

The "front surface" of the securities referred to in the present invention is an area in which predetermined items of the securities can be written, and may be any surface on which the security medium of the present invention can be provided. Therefore, the front surface here includes the so-called front and back surfaces of securities.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. It should be noted that in the drawings, the size, shape, and arrangement relationship of each constituent component are only schematically illustrated to the extent that the present invention can be understood, and the numerical conditions described below are merely examples. .

First, the structure of the security medium of the present invention will be described with reference to FIG. FIG. 1A is a plan view schematically showing an embodiment of the security medium 14 of the present invention and its configuration. 1B is a cross-sectional view schematically showing a cross section taken along one-dot broken line AA ′ in FIG.

The material of the securities 10 applicable to the security medium 14 of the present invention has the object of the present invention as long as it is formed of a material which is not sensitively detected by the means used for detecting a small piece to be detected. The thickness and other properties do not matter as long as they are not impaired.

Therefore, the material of the base material 12 of the securities 10 is paper, polyvinyl chloride, polycarbonate,
It is preferable to use any non-conductive material such as plastic or resin composed of polyester or the like. The base material 12 of the securities 10 is preferably made of a paper material made of wood pulp or synthetic pulp.

The security medium 14 of the present invention has a structure in which the electromagnetic sensitive substance 14a constituting the small piece to be detected is irregularly dispersed in the heat fusible substance 14b as the base material.

On the other hand, the small piece 14a to be detected is formed of any material that can be detected by electromagnetic means, for example, an electromagnetic sensitive material such as a metal fiber, a metal foil, a magnetic element and a plastic-coated metal fiber. Good to do.

For example, the material of the detected small piece 14a is preferably stainless steel.

The shape of the small piece 14a to be detected is preferably fibrous. However, the size in the major axis direction, ie, the ratio of the length to the size in the minor axis direction, ie, the diameter, width or thickness. However, the larger one is preferable. Therefore, the detected small piece 14a is preferably a finer fibrous small piece.

Therefore, the security medium 14 of the present invention
The electromagnetically sensitive material 14a is preferably made of, for example, a stainless fiber, has an average diameter of 6 to 10 μm, and a length of about 5 mm.

Further, as the heat-melting substance constituting the security medium 14 of the present invention, paraffin wax,
A waxy material selected from the group comprising carnauba wax and ester wax can be used. Alternatively, a thermoplastic resin selected from the group including vinyl chloride resin, ethylene resin, and acrylic resin can be used instead of the wax-like substance. Also, instead of the wax-like substance alone or the thermoplastic resin, a mixture of the wax-like substance and the thermoplastic resin can be used.

Regarding the physical properties suitable for this heat-fusible substance, the object of the present invention is taken into consideration in consideration of the specifications of the security medium 14 to be manufactured, the properties of the securities to be applied, the durability of the manufacturing apparatus described later, and the like. It can be determined within a range that does not impair it. For example, in the range of 70 ° C to 130 ° C, it is preferable to use a heat fusible substance having a property of melting or softening.

The security medium 14 of the present invention may be formed as an independent structure. Therefore, the security of the securities can be ensured by adding the security medium 14 of the present invention to the securities already issued and used. Further, unlike the prior art, by only adding the security medium 14 having a required area at a desired place of the base material 12 or the securities, more reliable security of the securities can be secured. Further, the security medium 14 of the present invention can be formed at a lower cost.

The securities to which the security medium 14 of the present invention is applied may be newly manufactured securities, as well as securities that have already been used and distributed.

Further, as the heat-meltable substance 14b,
It is preferable to select and use a substance that becomes colorless and transparent after the manufacturing process.

By using such a substance, it is possible to impart the function as the security medium 14 to the securities, especially in the case of aesthetic problems, without impairing the essential aesthetic appearance thereof.

Further, even if the security medium 14 is colorless and transparent, its presence can be visually confirmed by its gloss, so that the securities 1 that do not exist where they should exist.
It is of course possible to distinguish 0 as a counterfeit.

Next, a method of fixing the security medium 14 to the securities according to the present invention will be described with reference to FIG.

FIG. 2A is a schematic partial sectional view showing an example in which the security medium is configured in the form of the transfer ribbon 18.

FIG. 2B is a plan view of the essential part schematically showing a structural example of the thermal transfer recording apparatus 20 for carrying out the method for manufacturing a security medium of the present invention.

In the first step, the security medium 14 of the present invention is the electromagnetic sensitive substance 1 which is a small piece to be detected.
4a is mixed with the heat fusible substance 14b as a base material to obtain a mixture thereof. This mixing ratio is such that the detected small pieces are appropriately dispersed in the base material, and the distribution state of each detected small piece is
The ratio should be set so that it can be properly recognized as meaningful identification information. Next, in a second step, the obtained liquid phase mixture is applied onto the base film 16 and then dried to manufacture the transfer ribbon 18 having the solid phase mixture. In this case, the solid phase mixture may be fixedly formed on the sheet-shaped base film 16 and then cut into a ribbon shape, or the solid phase mixture may be fixedly formed on the ribbon-shaped base film. Good. Finally, in a third step, the obtained transfer ribbon 18 is wound around a reel, and then the transfer ribbon 18 is wound around the thermal transfer recording device 20.
After that, the thermal transfer head 22 is attached to a predetermined portion of the base substrate 12.
Thermal transfer is performed by the action of. In this way, the security medium 14 of the present invention can be provided on the surface of the base substrate 12 of the desired securities 10.

As described above, according to the security medium 14 of the present invention, a base film or a base material for securities is used as a support, and the security medium 1 is layered on the support.
Since the process of manufacturing 4 is extremely simple, it contributes to a significant reduction in manufacturing cost.

The mixture obtained in the first step is preferably 5 to 2 stainless steel fibers when the small piece to be detected is stainless fiber as the electromagnetic sensitive substance 14a.
At a ratio of 0% by weight, that is, the base material, the heat-meltable substance 1
It is preferable to mix 4b as 95 to 80% by weight.

Now, the structure of the transfer ribbon 18 will be described with reference to FIG.

The transfer ribbon 18 for forming the security medium 14 of the present invention has a base film 16 having an upper surface coated with a heat-fusible substance 14b in which small particles 14a to be detected which essentially constitute the security medium 14 are dispersed. It is configured by being fixed.

At this time, the amount of the mixture coated on the base film 16 should be such that, when the security medium 14 of the present invention is used, a detection signal sufficient to achieve the object of the present invention can be obtained. . For example, if stainless steel fiber is used as the electromagnetic sensitive material,
It is preferably g / m ² .

As the base film 16, films made of various materials can be used as long as the object of the present invention is not impaired.

For example, a polyimide tape, a polyester film and the like can be mentioned, but preferably a polyester film is used.

The transfer ribbon 18 may be incorporated into, for example, a cassette and finished as a module in the same manner as in the form actually used in a printer for a word processor or a personal computer.

The transfer of the security medium 14 from the transfer ribbon 18 onto the base material 12 in the third step is performed by thermal transfer. That is, a solid-phase mixture having a desired size suitable for a predetermined portion of the surface of the base material 12 of the securities 10 is melted by the thermal transfer head 22, and the melted mixture is deposited on the base material 12. Heat transfer. Further, as described above, for example, the transfer ribbon 18 is finished in a cassette shape and incorporated in the thermal transfer recording device 20 as a module, so that the security medium 1 of the present invention is obtained.
It is also possible to facilitate the operation of the system including 4 and downsize the device.

An apparatus for carrying out the method of manufacturing the security medium 14 of the present invention will be described with reference to FIG.

The thermal transfer recording apparatus 20 includes a feeding reel 24, a take-up reel 26, a thermal transfer head 22 and a platen roller 28. This thermal transfer recording device 2
It can be said that 0 is an application of the configuration of a thermal transfer printer used in a word processor, a personal computer or the like which has been conventionally used in principle. Therefore, although not described in detail, further components other than the conventionally used configuration may be included.

The operation of the thermal transfer recording device 20 will be described more specifically below with reference to FIG.

First, the feeding reel 24 and the take-up reel 2
The transfer ribbon 18 is hung over the sheet 6. Then finally securities 1
The base material 12 completed as 0 is arranged immediately above the base material side of the transfer ribbon 18 and on the lower surface side of the platen roller 28. As described above, the securities 10 include vouchers, securities, cards, evidence securities, and the like.

Here, the base material 12 is a certificate that is already completed one by one, for example, a security medium is not attached, but is already used or is ready for immediate use. It may be a simple stock base material such as a continuous roll before completion.

Therefore, after the security medium 14 of the present invention is formed on the base material 12, the specific prescribed contents may be printed on the securities 10.

The transfer ribbon 18 is pressed against the platen roller 28 with an appropriate pressure by the operation of the thermal transfer head 22.

At the same time, the base material 12 is transferred by the rotation of the platen roller 28, and when it reaches a preset position, the thermal transfer head 22 is heated at an appropriate temperature by the control of a control circuit (not shown) and transferred. Ribbon 18
Is pressed against the surface of the base substrate 12 from the side of the base film 16.

Then, the solid-phase mixture formed on the base film 16 in a layered manner, that is, the small piece 14 to be detected.
a, for example, a heat-meltable substance 14 in which an electromagnetic sensitive substance is dispersed
The mixture of b is melted by the heat generated by the thermal transfer head 22 and is sequentially transferred onto the surface of the base material 12.

The heat fusible substance 14b is solidified by contacting with air to be cooled and the mixture is formed as a solid phase layer.

Through the above steps, the security medium 14 of the present invention is firmly fixed on the surface of the base material 12.

In the thermal transfer recording apparatus 20 for forming the security medium 14 of the present invention on the surface of the base substrate 12 of the securities 10, the thermal transfer head 22 is provided with a degree of freedom so that the installation position can be freely set. Alternatively, by providing the area where the base material 12 can be arranged with a degree of freedom within a range that does not impair the object of the present invention, a plurality of types of securities 10
Even with respect to the above, it is possible to flexibly cope with the thermal transfer recording apparatus 20 with almost no change in the configuration.

Therefore, the security medium 14 of the present invention
According to the method for forming the same, the position of the transfer ribbon 18 or the operation of the thermal transfer head 22 allows the security device 10 or the base material 12 to be appropriately located at any position without depending on the form or property of the securities 10 or the base material 12. Can be formed and added.

When a transfer sheet in which a solid-phase mixture is layered on a sheet-like film is used instead of the transfer ribbon described above, the structure of the thermal transfer recording device 20 is changed and a partial area on the transfer sheet is changed. It is sufficient to have a structure capable of sequentially performing thermal transfer.

3 and 4 of an apparatus for determining whether or not the security medium 14, that is, the securities 10 is authentic by using the security medium 14 of the present invention, and FIG. It will be described with reference to FIG.

FIG. 3 is a partial plan view showing the outline of a reading device 30 for reading the information of the security medium 14 of the present invention fixed to securities.

Examples of electromagnetic means for detecting the electromagnetic sensitive substance of the security medium 14 of the present invention include a microwave sensor and a magnetoelectric conversion element. In this embodiment, microwaves are used as the electromagnetic waves. An example of detecting an electromagnetically sensitive substance will be described.

The reader 30 for use with the security medium 14 of the present invention comprises a front transfer roller 32 comprising an upper roller 32a and a lower roller 32b, and a rear transfer roller also comprising an upper roller 34a and a lower roller 34b. A plurality of sets of transfer rollers including a plurality of transfer rollers 34, a microwave sensor 36, and a control unit 38 that is connected to the microwave sensor 36 and controls them.

The front transfer roller 32 and the rear transfer roller 34 sandwich the base material 12 which has not been completed as a completed certificate or securities, in a specific direction, that is, in the direction of arrow B in FIG. It is for transfer.

The microwave sensor 36 includes a microwave transmitter 36a and a microwave detection sensor 36b for detecting a reflected wave of the emitted microwave reflected by the electromagnetic sensitive material. This reading device 30
As the microwave sensor 36 that can be preferably used, commercially available microwave transmitters and microwave detection sensors can be used. For example, preferably New Japan Radio Co., Ltd.
It is preferable to use NJR4211, etc. manufactured by the company.

In this embodiment, a stainless fiber is used as the small piece 14a to be detected of the security medium 14 of the present invention, and the security medium 14 is irradiated with microwaves by the microwave oscillator 36a constituting the microwave sensor 36. The reflected output is detected by the microwave detection sensor 36b.
An example detected by

A method of detecting characteristic data of the security medium 14 according to the present invention will be described with reference to FIG.

The security medium 14 is the base material 12
Is transferred in the direction of arrow B. Then, the arrow B is moved by the microwave transmitter 36a constituting the microwave sensor 36 whose operation is controlled by the control unit 38.
Microwaves are sequentially radiated from the right end side to the left end side of the security medium 14 transferred in the direction. Detected small pieces 1 dispersed in the security medium 14
The reflected output from the stainless fiber 4a is sequentially detected by the microwave detection sensor 36b provided in the vicinity of the microwave transmitter 36a.

The detected reflection output is amplified by an amplifier (not shown) and further converted into a digital signal by an A / D converter (not shown).

These detection results are registered in a database built in computer hardware (not shown) connected to the control unit 38 directly or via an electric communication line. Further, this data can be displayed and output on a monitor (not shown) connected to the control unit 38 or computer hardware.

An example of the detection result is shown in FIG.

FIG. 4 shows the security medium 14 of the present invention.
7 is a graph showing an example of detection result data output by reading the security-equipped securities 10 to which is added by the reading device 30 described above.

The horizontal axis of the graph represents time, that is, the position of the security medium 14 being read. The vertical axis is
Amplify the width of the read signal with an amplifier, and after that,
The signal strength after A / D conversion is shown.

A line graph obtained by plotting the time during which the microwave sensor 36 scans the security medium 14, that is, the signal intensity after A / D conversion detected at each medium scanning position and connecting adjacent plots with straight lines. Is.

As a waveform suitable for the detection data of the security medium 14 of the present invention, as shown in this example, it is preferable that the vertical width of the signal strength of the plots adjacent to each other is large from the viewpoint of security accuracy.

Therefore, the concentration of the small piece 14a to be detected with respect to the heat-fusible substance 14b is such that the height difference between the respective points becomes large so that the output waveform repeatedly engraves high peaks and deep valleys. , It is better to select an appropriate concentration.

The shape of the security medium 14 of the present invention is preferably rectangular, but may be any suitable shape such as an ellipse as long as the object of the present invention is not impaired.

Assuming that the shape of the security medium 14 of the present invention is rectangular, and focusing on its size, the length in the minor axis direction, that is, the width of the security medium 14 of the present invention is the microwave used. Specifications of sensor 36,
That is, it may be set according to the width of the opening of the microwave detection sensor 36b, and can be set as appropriate within the range that does not impair the object of the present invention, but is preferably smaller than the width of the opening of the microwave detection sensor 36b. A narrow width is recommended.

With this configuration, even if, for example, the center line of the opening of the microwave detection sensor 36b and the center line of the security medium 14 of the present invention deviate to the range of 1/2 of the difference between these widths, the microwave Wave detection sensor 36b
Can output almost the same reading result.
Therefore, some margin can be provided for the adjustment when the microwave sensor 36 is attached to the reading device 30 and the installation of the transfer mechanism for the securities 10 and the like, and strict precision is not required, so that the reading device itself is manufactured. , Can be installed and operated more easily.

The length of the rectangular security medium 14 in the long axis direction is determined by the required data accuracy and reading point,
That is, it is determined by the detection pitch (interval) of the microwave detection sensor 36. For example, assuming that the microwave detection sensor 36b having a detection pitch of 2 mm is used to detect 32 points, a length of about 64 mm is required. As the number of points to be detected increases, the number of characteristic points of the detected waveform increases, and the waveform becomes complicated, so that the individual identification accuracy of the security medium 14 increases. However, it is necessary to consider that certain items are written on the front and / or back of securities, or that they need to be written after adding a security medium, and that the detection pitch of sensors varies depending on the model. Then, the length is preferably in the range of 10 mm to 100 mm.

The thickness of the security medium 14 can be appropriately set within a range that does not impair the object of the present invention. However, due to the nature of securities, it is considered that a plurality of securities are often stored in piles. Therefore, the thickness is preferably 5 μm to 20 μm in a range not bulky during storage.

In general, the characteristic data read in this manner is preferably stored in the database of the securities issuer or a third party organization when the securities are issued.

Then, when it becomes necessary to confirm the authenticity of the securities due to the securities being issued and distributed, and used, settled, etc., the characteristic data is read again, and the saved data read and stored at the time of issuance is saved. Just compare and collate with the data.

At this time, it is inevitable that the read characteristic data is slightly different from the data at the time of issuance due to individual difference of the microwave detection sensor.
In such a case, the correlation coefficient between the stored data and the data to be collated is calculated. If this is a predetermined value or more, it is determined that the security medium is a genuine security medium, that is, genuine securities, and a value equal to or greater than the predetermined value is determined. If it does not show a value, it is determined to be fake securities.

The predetermined value mentioned here is a value appropriately determined so as to satisfy the error rate and the correct answer rate set according to the strength of security required for each security.

[0084]

As is apparent from the above description, according to the security medium of the present invention, it is possible to provide not only for new securities but also for securities already issued and used. . For example, if securities that are already in circulation or are used without issuing new securities,
A high level security function can be provided only by adding the security medium of the present invention.

In general, the electromagnetic sensitive material is a special material and is therefore expensive in terms of cost, but according to the structure of the security medium of the present invention, it is not necessary to provide the security medium in a wide range of securities itself as in the conventional case. Therefore, the amount of the electromagnetic sensitive substance used can be significantly reduced as compared with the conventional one. Therefore, the material constituting the security medium can be saved, which greatly contributes to resource saving and cost reduction.

Further, according to the security medium manufacturing method of the present invention, the security medium of the present invention can be provided in various securities by a simple method without particularly changing the manufacturing process and the structure of the manufacturing apparatus. Therefore, it is possible to secure security at a lower cost than in the past.

[Brief description of drawings]

FIG. 1 is a schematic plan view (FIG. 1 (A)) showing a configuration of a security medium of the present invention and A- in FIG. 1 (A).
FIG. 2B is a cross-sectional view taken along the dashed line A ′ (FIG. 1B).

FIG. 2 is a schematic cross-sectional view (FIG. 2A) schematically showing the structure of a transfer ribbon applied to the security medium manufacturing apparatus of the present invention and schematically showing the structure of the manufacturing apparatus. FIG. 3 is a schematic plan view (FIG. 2 (B)).

FIG. 3 is a schematic plan view schematically showing the configuration of a security medium reading device according to the present invention.

FIG. 4 is a graph showing an example of read data of the security medium of the present invention.

[Explanation of symbols]

10: Securities 12: Base material 14: Security medium 14a: Small piece to be detected (electromagnetic sensitive material) 14b: heat-fusible substance 16: Base film 18: Transfer ribbon 20: Thermal transfer recording device 22: Thermal transfer head 24: Delivery reel 26: Take-up reel 28: Platen roller 30: Reading device 32: Front transfer roller 32a, 34a: upper roller 32b, 34b: lower roller 34: Rear transfer roller 36: Microwave sensor 36a: Microwave transmitter 36b: Microwave detection sensor 38: control unit

Claims (18)

[Claims] 1. A detection target comprising an electromagnetically sensitive substance and a base material composed of a heat-fusible substance, wherein the detection target is irregularly dispersed in the base material. The characteristic security medium. 2. The security medium according to claim 1, wherein the electromagnetic sensitive material is a stainless fiber. 3. The wax-like substance selected from the group containing paraffin wax, carnauba wax and ester wax, or a vinyl chloride resin,
The security medium according to claim 1 or 2, which is a thermoplastic resin selected from the group including an ethylene resin and an acrylic resin, and a mixture of the wax-like substance and the thermoplastic resin. 4. The security medium according to claim 1, wherein a width of the security medium is narrower than a width of the opening of the electromagnetic wave detection sensor. 5. The security medium according to claim 2, wherein a mixing ratio of the stainless fiber and the heat-melting substance is within a range of 95: 5 to 80:20 by weight. 6. The security medium according to claim 1, wherein the security medium is fixed on the surface of a base material of securities by thermal transfer. 7. The security medium according to claim 1, wherein the security medium is fixed on a base film. 8. The security medium according to claim 7, wherein the security medium has a transfer ribbon shape. 9. The security medium according to claim 7, wherein the base film is a polyester film. 10. Securities in which the security medium according to claim 6 is adhered to a part of a surface region of the base substrate. 11. The securities according to claim 10, wherein the securities are certificates. 12. The securities according to claim 10, wherein the securities are cards. 13. The securities according to claim 10, wherein the securities are securities. 14. The securities according to claim 10, wherein the securities are evidence securities. 15. A step of mixing an electromagnetically sensitive substance with a heat-fusible substance to obtain a mixture thereof, a step of applying the mixture onto a base film, and a step of drying the mixture to form a mixture on the base film. A security medium comprising: a step of obtaining a mixture of solid phases adhered to each other; and a step of thermally transferring the mixture of solid phases onto the surface of a security to obtain the mixture of solid phases thermally transferred as a security medium. Forming method. 16. The method according to claim 15, wherein the electromagnetic sensitive material is a stainless fiber, and the stainless fiber is mixed with the heat fusible material in a ratio of 5 to 20% by weight. 17. The forming method according to claim 15, wherein the base film is a polyester film. 18. The forming method according to claim 15, wherein the security medium is formed in the form of a transfer ribbon.