JPH0896099A - Magnetic transfer foil medium and using method therefor - Google Patents

Abstract

PURPOSE: To improve the forgery prevention effect of a medium and to surely perform the judgment of the authenticity of the medium by providing a magnetic bar code on either one of the upper surface and the lower surface of an adhesive layer. CONSTITUTION: The magnetic transfer foil medium is provided with a peeling layer 13 on a supporting body 12 to be a medium base body by a printing method and coating, etc. On this peeling layer 13, a magnetic recording layer 14 is provided by the printing method and coating, etc. On this magnetic recording layer 14, an adhesive layer 15 is provided by the printing method and coating, etc. Further, on this adhesive layer 15, magnetic bar codes 16a and 16b are provided by the printing method, etc. The magnetic bar codes 16a and 16b or a magnetic random pattern are made from at least two kinds of magnetic material or more in which coercive force is 60Oe or below and mutually different magnetic permeability is provided. As a result, a high forgery prevention effect can be obtained by the reading collation of the magnetic bar codes 16a and 16b or the random pattern.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is applicable to, for example, membership cards, I
The present invention relates to a magnetic transfer foil medium used for a magnetic recording medium such as a D card, a credit card, a cash card, and a prepaid card, and particularly relates to a magnetic transfer foil medium and a method of using the magnetic transfer foil medium for significantly improving the forgery prevention effect of the medium. is there.

[0002]

2. Description of the Related Art In recent years, payments such as membership cards, ID cards, credit cards, cash cards, and other securities that are magnetic recording media have become common. Under such circumstances, measures for counterfeiting securities include, for example, high coercive force magnetic recording, attachment of hologram foil to a medium, combined use of magnetic bar code, etc., use of special ink, magnetic shield, etc. ,
Various means have been implemented.

However, the effect of such conventional security measures is being diminished at present.

On the other hand, it is necessary to judge whether or not the securities such as cards are valid, and whether or not the holder of the securities is valid. For example, if the magnetic data of the cash card is falsified and rewritten to the data in the name of another person, it is possible to illegally use the cash dispenser as long as the password can be entered.

When a used card is prepared as a prepaid card that does not specify the user and a dead copy of magnetic data is performed, the card becomes valid,
It will have the same value as a valid card.

Further, it is a reality that the securities can be relatively easily copied by color copying and digital printing in recent years.

Therefore, recently, there is a tendency to use a reader / writer (R / W) to eliminate counterfeit tickets rather than to prevent forgery, particularly in terms of appearance. Therefore, the present situation is that no complete counterfeit prevention measures have been reached.

[0008]

As described above, the conventional magnetic recording medium has a problem that it is difficult to sufficiently prevent forgery.

The present invention has been made to solve the above problems, and in the magnetic transfer foil medium used for the magnetic recording medium, the effect of preventing the forgery of the medium is remarkably improved and the authenticity of the medium is improved. It is an object of the present invention to provide a magnetic transfer foil medium capable of reliably performing the above determination and a method of using the magnetic transfer foil medium.

[0010]

In order to achieve the above object, first, in the invention according to claim 1, a magnetic transfer is formed by sequentially laminating a peeling layer, a magnetic recording layer and an adhesive layer on a substrate. In the foil medium, a magnetic barcode is provided either above or below the adhesive layer.

Further, in the invention according to claim 7, in a magnetic transfer foil medium formed by sequentially laminating a release layer, a magnetic recording layer and an adhesive layer on a substrate, either above or below the adhesive layer, A magnetic random pattern is provided.

In particular, the magnetic bar code or magnetic random pattern is made of a soft magnetic material having a coercive force of 60 Oe or less.

The magnetic bar code or magnetic random pattern is made of at least two kinds of magnetic materials having a coercive force of 60 Oe or less and different magnetic permeability.

Further, the magnetic bar code or magnetic random pattern has a coercive force of 60 Oe to 3
It is made of a semi-hard magnetic material of 00 Oe.

Further, as the magnetic bar code or magnetic random pattern, at least two kinds of soft magnetic materials having a coercive force of 60 Oe or less and semi-hard magnetic materials having a coercive force of 60 Oe to 300 Oe are provided in combination.

On the other hand, in the invention according to claim 6, in the method of using the magnetic transfer foil medium according to claim 1, the code recognition / verification of the magnetic bar code and the magnetic recording on the magnetic recording layer are performed once. It is performed after the DC erasing or the high frequency erasing, and the magnetic recording is performed again on the magnetic recording layer after the code recognition and verification.

According to a twelfth aspect of the invention, in the method of using the magnetic transfer foil medium according to the seventh aspect of the invention, the code recognition / verification of the magnetic random pattern and the magnetic recording on the magnetic recording layer are performed once. It is performed after the DC erasing or the high frequency erasing, and the magnetic recording is performed again on the magnetic recording layer after the code recognition and verification.

[0018]

Therefore, in the magnetic transfer foil medium of the present invention and the method of using the same, the magnetic transfer foil medium of the present invention is adhered to a transfer medium such as a card by a method such as thermal transfer or thermocompression bonding, The magnetic recording medium that is obtained flush with the transfer medium is
Since a magnetic bar code or a magnetic random pattern that can normally be magnetically recorded is present in the lower layer portion of the magnetic recording layer, the magnetic recording layer has a concealing effect and is visually distinguishable from the conventional magnetic recording medium. Instead, the magnetic recording medium having a high anti-counterfeiting effect can be obtained by reading and collating the magnetic data of the magnetic recording layer and the unique magnetic bar code or magnetic random pattern that differs for each medium.

Further, the magnetic bar code or the magnetic random pattern itself is different for each medium and prevents forgery of the magnetic recording medium, and at the same time, even if the magnetic data of the magnetic recording layer is falsified, the magnetic bar code, Alternatively, by performing complicated signal processing with the magnetic random pattern, forgery of the magnetic recording medium can be easily determined, and the authenticity of the magnetic recording medium can be reliably determined.

That is, reader / writer (R / W)
The magnetic recording degaussing head attached to the magnetic recording layer is used to erase the magnetic recording data of the magnetic recording layer once by direct current or high frequency, and the magnetic bar code or magnetic random pattern in the lower layer of the magnetic recording layer is recorded on the magnetic head, MR By measuring the output waveform with a magnetic sensor such as a sensor, the magnetic recording medium can be discriminated and recognized, and the authenticity can be determined. Then, the original transaction of the magnetic recording medium can be performed, and the magnetic data recorded in the magnetic recording layer can be recorded again in the magnetic recording layer.

As described above, the effect of preventing forgery of the medium can be remarkably improved and the authenticity of the medium can be surely determined.

[0022]

Embodiments of the present invention will now be described in detail with reference to the drawings.

[First Embodiment] FIG. 1 is a plan view showing a structural example of a magnetic transfer foil medium according to the present invention, and FIG. 2 is a cross-sectional view at the Y position in the magnetic transfer foil medium of FIG.

That is, as shown in FIG. 1 and FIG.
In the magnetic transfer foil medium 11 of this embodiment, a release layer 13 is provided on a support 12 which is a medium substrate by a printing method, coating, etc., and a magnetic recording layer 14 is formed on the release layer 13 by a printing method. The magnetic recording layer 14 is provided with a coating, the adhesive layer 15 is provided on the magnetic recording layer 14 by a printing method, a coating, etc., and the magnetic barcode 1 is provided on the adhesive layer 15.
6a and 16b are provided by a printing method or the like.

1 and 2, the magnetic bar codes 16a and 16b are schematically shown.

Further, the adhesive layer 15 and the magnetic bar code 16
Even if the positions of a and 16b are reversed, that is, the magnetic barcodes 16a and 16b are provided on the magnetic recording layer 14, and the adhesive layer 15 is further provided on the magnetic barcodes 16a and 16b. However, it does not matter.

Here, as the support 12, the magnetic transfer foil medium 11 is mechanically tough because it is peeled and removed from the main body of the magnetic transfer foil medium 11 after being transferred and adhered to a magnetic recording medium substrate such as a card. It is possible to use a relatively thin film having flexibility and flexibility, such as a polyethylene film, a polypropylene film, or a plastic film made of a polymer material. And, preferably, this plastic film has a thickness of 12 μm.
A polyethylene terephthalate (PET) film having a thickness of 1 to 100 μm can be used.

The release layer 13 is formed by applying a polymer material to a thickness of 0.5 μm to 5 μm by a printing method or a coating method.
After transferring the magnetic recording medium substrate such as a card, the support 1
2 and the magnetic recording layer 14 must be easily separated.

When the magnetic transfer foil medium 11 is exposed on the surface, a slippery additive such as wax or wax is added to the resin in order to protect the magnetic recording layer 14. There is no problem even if an agent is added.

In this case, as the polymer material, for example, polyvinyl chloride, polyester, polyethylene, acrylic resin or the like can be used alone or in combination,
It is preferable to use an acrylic resin having a good peeling property.

Examples of pigments added to enhance the protective property include inorganic calcium carbonate, alumina,
Talc, silica and the like can be used, and as the slipping agent, for example, silicon oil, silicon wax, polyethylene wax, carnauba wax, zinc stearate, fluorine-based and the like can be used.

On the other hand, as the magnetic recording layer 14, a magnetic ink in which a magnetic material is dispersed in a polymer material is formed as a magnetic film having a residual magnetic flux density of 300 Gauss to 5000 Gauss by a printing method or a coating method, and has a film thickness. 5 to 20μ
Provide about m.

In this case, as the polymer material, for example, polyvinyl chloride, polyester, polyethylene, acrylic resin or the like can be used alone or in combination,
Polyvinyl chloride and polyester are preferably used.

As the magnetic material, a coercive force of 100 O
It is possible to use powders of metals or alloys and metal compounds of e or more, for example, magnetite, γ-iron oxide, Co-deposited γ-iron oxide, barium ferrite, strontium ferrite, cumulone dioxide and the like.

Further, as the adhesive layer 15, since the magnetic transfer foil medium 11 is adhered to another medium, the softening point is 1 degree Celsius.
A polymer material having a temperature of 50 degrees or less is applied by a printing method or a coating method so as to have a film thickness of about 0.5 μm to 10 μm.

In this case, as the polymer material, for example, polyvinyl chloride, polyester, polyethylene, acrylic resin or the like can be used.

Further, as the magnetic bar code 16, a magnetic ink in which a magnetic material is dispersed in a polymer material is used, and a saturation magnetic flux density is 500 gauss or 1 by a printing method.
Print thickness of 5 to 2 at 0000 gauss (at 5 kOe)
The thickness is set to about 0 μm.

In this case, as the polymer material, for example, polyvinyl chloride, polyester, polyethylene, acrylic resin or the like can be used alone or in combination,
Polyvinyl chloride and polyester are preferably used.

The magnetic material is, for example, Fe or N.
i, Mn, Zn, Co, permalloy, sendust, Mn
-Zn ferrite, Ni-Zn ferrite, Mn ferrite, Zn ferrite, FeS, magnetite, γ-iron oxide, Co-deposited γ-iron oxide, barium ferrite, strontium ferrite, powder of metals such as chromium dioxide, platinum, and metal compounds. Can be used.

The magnetic transfer foil medium 1 according to this embodiment is described below.
A specific example of No. 1 will be described in detail.

(Specific Example 1) That is, the magnetic transfer foil medium 11 according to this specific example is a biaxially stretched P medium having a thickness of 25 μm.
A support 12 made of an ET film, a release layer 13 provided on the support 12, a magnetic recording layer 14 provided on the release layer 13 and made of a magnetically recordable magnetic material,
An adhesive layer 15 provided on the magnetic recording layer 14 and magnetic bar codes 16a and 16b made of a soft magnetic material provided on the adhesive layer 15 are used.

The magnetic transfer foil medium 11 is manufactured through the following steps.

{Preparation of Magnetic Transfer Foil Medium 11} (Release layer 13 paint) Acrylic resin 30 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight Metal isobutyl ketone 20 parts by weight (Magnetic recording layer 14 paint) PVC resin 20 parts by weight γ -Iron oxide (coercive force 300 Oe) 50 parts by weight Polyester-based dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (Adhesive layer 15 paint) Polyester resin 40 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (Magnetic bar code 16a, 16b ink) PVC resin 20 parts by weight Mn ferrite (coercive force 30 Oe) 50 parts by weight Polyester dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight First, biaxial On the support 12 made of a stretched PET film having a thickness of 25 μm, the above-mentioned coating material for the release layer 13 was applied using a gravure coater at a drying temperature of 110 ° C. and a coating thickness of 1.5 μm to form the release layer 13. Formed.

Next, the magnetic recording layer 1 is formed on the peeling layer 13.
4 paint using a knife coater, drying temperature 110 ℃
Degree, residual magnetic flux density 1000 gauss, coating thickness 12 μm
To form the magnetic recording layer 14.

Next, the coating material for the adhesive layer 15 is applied onto the magnetic recording layer 14 using a gravure coater to a drying temperature of 100 ° C.
And the coating thickness was 1.0 μm to form the adhesive layer 15.

Finally, magnetic bar code 16a, 16b ink is applied onto the adhesive layer 15 by gravure printing method.
With a drying temperature of 120 degrees Celsius and a saturation magnetic flux density of 300 gauss,
Apply magnetic bar code 16a, 16 with coating thickness of 6μm
The magnetic transfer foil medium 11 which forms b and has high security.
Got

(Specific Example 2) That is, the magnetic transfer foil medium 11 according to this specific example is a biaxially stretched P film having a thickness of 35 μm.
A support 12 made of an ET film, a release layer 13 provided on the support 12, a magnetic recording layer 14 provided on the release layer 13 and made of a magnetically recordable magnetic material,
A magnetic bar code 1 formed on the magnetic recording layer 14 and made of a soft magnetic material and having different magnetic permeability.
6a and 16b, and an adhesive layer 15 provided on the magnetic bar code 16.

The magnetic transfer foil medium 11 is manufactured through the following steps.

{Preparation of magnetic transfer foil medium 11} (Peeling layer 13 paint) Acrylic resin 30 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight Metal isobutyl ketone 20 parts by weight (Magnetic recording layer 14 paint) PVC resin 20 parts by weight Co Adhered γ-iron oxide (coercive force 650 Oe) 50 parts by weight Polyester dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (magnetic barcode 16a ink) PVC resin 20 parts by weight Mn ferrite (coercive force) 30 Oe) 50 parts by weight Polyester dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (Magnetic bar code 16b ink) PVC resin 20 parts by weight Iron powder (coercive force 30 Oe) 50 parts by weight Polyester dispersant Two Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (adhesive layer 15 paint) Polyester resin 40 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight First, a support made of a biaxially stretched PET film having a thickness of 35 μm. The release layer 13 coating material was applied onto No. 12 with a gravure coater at a drying temperature of 110 ° C. and a coating thickness of 1.5 μm to form the release layer 13.

Next, the magnetic recording layer 1 is formed on the release layer 13.
2 Paint with a knife coater at a drying temperature of 110 degrees Celsius
And a residual magnetic flux density of 1000 gauss and a coating thickness of 12 μm were applied to form a magnetic recording layer 14.

Next, the magnetic bar code 16a ink and the magnetic bar code 16b ink are placed on the magnetic recording layer 14.
Using the screen printing method, the drying temperature is 80 degrees Celsius, the saturation magnetic flux density is 3000 gauss (at 5 kOe), and the printing film thickness is 10
The magnetic bar codes 16a and 16b were formed by coating the magnetic bar codes 16 μm.

Finally, the magnetic bar codes 16a, 16
Using a gravure coater, paint the adhesive layer 15 on b.
The magnetic transfer foil medium 11 having a high security was obtained by applying the composition at a drying temperature of 100 ° C. and a coating thickness of 1.0 μm to form an adhesive layer 15.

The magnetic transfer foil medium 1 according to the present embodiment is described below.
The specific usage method of 1 will be described in detail.

(Specific Example 3) FIG. 3 is a plan view showing an example of a case where the magnetic transfer foil medium 11 according to the present embodiment is transferred to a card substrate 18 which is a transfer medium to form a magnetic recording card 17. 4 is a sectional view of the magnetic recording card 17 of FIG. 3 at the Y position.

3 and 4, the same elements as those in FIGS. 1 and 2 are designated by the same reference numerals. Further, in FIGS. 3 and 4, the magnetic bar code is schematically shown.

That is, in FIG. 3 and FIG. 4, as the card base material 18 which is the transfer target medium for transferring the magnetic transfer foil medium 11 according to the present embodiment, for example, a paper card,
A boarding pass, a passbook, a ticket, a vinyl chloride card, a PET card, or the like can be used, and preferably a vinyl chloride card that can be surface-finished after the magnetic transfer foil medium 11 is transferred to the card base material 18 is used.

That is, in the magnetic recording card 17 according to this example, the support 12 made of a biaxially stretched PET film having a thickness of 35 μm, the release layer 13 provided on the support 12, and the release layer. A magnetic recording layer 14 formed on the magnetic recording layer 13 made of a magnetically recordable magnetic material; an adhesive layer 15 provided on the magnetic recording layer 14; and a magnetic layer made of a semi-hard magnetic material provided on the adhesive layer 15. The magnetic transfer foil medium 11 is composed of the barcodes 16a and 16b,
Further, the magnetic transfer foil medium 11 is thermally transferred onto a vinyl chloride card 18 which is a medium to be transferred, and is bonded by a thermocompression bonding method so as to be flush with the vinyl chloride card 18.

The magnetic recording card 17 is manufactured through the following steps.

{Preparation of Magnetic Transfer Foil Medium 11} (Release layer 13 coating material) Acrylic resin 30 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight Metal isobutyl ketone 20 parts by weight (Magnetic recording layer 14 coating material) PVC resin 20 parts by weight Co Adhered γ-iron oxide (coercive force 650 Oe) 50 parts by weight Polyester dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (adhesive layer 15 paint) Polyester resin 40 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 Parts by weight (magnetic bar code 16a, 16b ink) vinyl chloride resin 20 parts by weight γ-iron oxide (coercive force 300 Oe) 50 parts by weight polyester dispersant 2 parts by weight cyclohexanone 10 parts by weight toluene 40 parts by weight methyl ethyl ketone 40 parts by weight First, On the support 12 made of the axially stretched PET film having a thickness of 35 μm, the above-mentioned release layer 13 coating material was applied at a drying temperature of 110 ° C. and a coating thickness of 1.5 μm by using a gravure coater. Was formed.

Next, the magnetic recording layer 1 is formed on the peeling layer 13.
4 paint using a knife coater, drying temperature 110 ℃
And a residual magnetic flux density of 1000 gauss and a coating thickness of 12 μm were applied to form a magnetic recording layer 14.

Next, a coating material for the adhesive layer 15 was applied onto the magnetic recording layer 14 using a gravure coater to obtain a drying temperature of 10 degrees Celsius.
The adhesive layer 15 was formed by applying the coating layer at 0 degree with a coating thickness of 1.0 μm.

Next, magnetic bar code 16a, 16b ink is applied onto the adhesive layer 15 by a screen printing method at a drying temperature of 80 ° C., a saturation magnetic flux density of 3000 gauss, and a printing film thickness of 10 μm. Bar code 16
By forming a and 16b, a magnetic transfer foil medium 11 having high security was obtained.

Finally, the magnetic transfer foil medium 11 is adhered to a white vinyl chloride card 18 having a thickness of 760 μm by a thermal transfer and thermocompression bonding method so as to be flush with the vinyl chloride card 18 to obtain a magnetic recording card 17. It was

(Specific Example 4) That is, the magnetic recording card 17 according to the present specific example is a biaxially stretched P having a thickness of 35 μm.
A support 12 made of an ET film, a release layer 13 provided on the support 12, a magnetic recording layer 14 provided on the release layer 13 and made of a magnetically recordable magnetic material,
A magnetic bar code 16a made of a soft magnetic material, a magnetic bar code 16b made of a semi-hard magnetic material, and a magnetic bar code 16a provided on the magnetic recording layer 14.
A magnetic transfer foil medium 11 is constituted by the adhesive layer 15 provided on 16b, and this magnetic transfer foil medium 11 is thermally transferred onto a vinyl chloride card 18 which is a medium to be transferred and bonded by using a thermocompression bonding method. The structure is flush with the PVC card 18.

The magnetic recording card 11 is manufactured through the following steps.

{Preparation of magnetic transfer foil medium 11} (Peeling layer 13 paint) Acrylic resin 30 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight Metal isobutyl ketone 20 parts by weight (Magnetic recording layer 14 paint) PVC resin 20 parts by weight Co Adhered γ-iron oxide (coercive force 650 Oe) 50 parts by weight Polyester dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (magnetic barcode 16a ink) PVC resin 20 parts by weight Mn ferrite (coercive force) 30 Oe) 50 parts by weight Polyester type dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyme ethyl ketone 40 parts by weight (Magnetic bar code 16b ink) PVC resin 20 parts by weight γ-iron oxide (coercive force 300 Oe) 50 parts by weight Part Polyester Agent 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (adhesive layer 15 paint) Polyester resin 40 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight First, a biaxially stretched PET film having a thickness of 35 μm is formed. The release layer 13 coating material was applied onto the support 12 using a gravure coater at a drying temperature of 110 ° C. and a coating thickness of 1.5 μm to form the release layer 13.

Next, the magnetic recording layer 1 is formed on the peeling layer 13.
4 paint using a knife coater, drying temperature 110 ℃
And a residual magnetic flux density of 1000 gauss and a coating thickness of 12 μm were applied to form a magnetic recording layer 14.

Next, magnetic bar code 16a ink and magnetic bar code 16b ink are placed on the magnetic recording layer 14.
Using a screen printing method, printing was performed at a drying temperature of 80 ° C., a saturation magnetic flux density of 3000 gauss, and a printing film thickness of 10 μm to form magnetic barcodes 16a and 16b, respectively.

Next, the magnetic bar codes 16a, 16b
Using a gravure coater, the coating material for the adhesive layer 15 was applied thereon at a drying temperature of 100 degrees Celsius at a coating thickness of 1.0 μm to form the adhesive layer 15, and a magnetic transfer foil medium 11 having high security was obtained. .

Finally, the magnetic transfer foil medium 11 is adhered to a white vinyl chloride card 18 having a thickness of 760 μm by thermal transfer and thermocompression bonding so as to be flush with the vinyl chloride card 18 to obtain a magnetic recording card 17. It was

Next, a method of reading and collating the magnetic recording card 17 onto which the magnetic transfer foil medium 11 of this embodiment is transferred will be described.

FIG. 5 is a schematic diagram showing an example of the flow when the magnetic transfer foil medium 11 manufactured according to this embodiment is applied to the magnetic recording card 17 and the magnetic bar code is recognized by the magnetic sensor.

Reading and verification of the magnetic recording card 17 onto which the magnetic transfer foil medium 11 of this embodiment is transferred are performed as follows.

That is, as shown in FIG. 5, first, the magnetic recording card 17 is inserted into a reader / writer (R / W), and the magnetic data written in the magnetic recording layer 14 is
Once stored in the storage memory of the reader / writer (R / W), the magnetic recording of the magnetic recording layer 14 is DC erased or high frequency erased.

Next, the data of the magnetic bar codes 16a and 16b under the magnetic recording layer 14 is read and converted into a digital scanning signal by a method known to those skilled in the art.

Next, collation with the magnetic bar code data built in the reader / writer (R / W) is performed. As a result, if the magnetic recording card 17 is legitimate, the ordinary transaction is performed and the magnetic recording card 1
If 7 is a counterfeit, the transaction is stopped at that point.

In this system, the magnetic recording card 17
The ID symbol having the ID function based on the cryptographic conversion coding formula can also be used by using the digital scanning signal obtained when scanning is performed.

Next, after finishing the transaction, the data after the transaction built in the reader / writer (R / W) is
Rewriting on the magnetic recording layer 14, after which the magnetic recording card 17 is ejected from the reader / writer (R / W),
A series of transactions ends.

The magnetic bar codes 16a and 16b are
The magnetic transfer foil medium 11 provided with a plurality of magnetic materials is scanned with a read bias current in two or more types, and the obtained magnetic bar code data is scrambled by a method known to those skilled in the art, so that a much higher level is achieved. It is possible to take various anti-counterfeit measures.

As described above, in the magnetic transfer foil medium 11 of the present embodiment and the method of using the magnetic transfer foil medium 11, the magnetic transfer foil medium 11 of the present embodiment is subjected to a method such as thermal transfer or thermocompression bonding to a transfer medium 18 such as a card. The magnetic recording card 17 obtained by adhering the recording medium to the transfer medium 18 is flush with the magnetic recording layer 14
Since the magnetic barcodes 16a and 16b are present in the lower layer portion of the magnetic recording layer, the magnetic recording layer 14 can hide the magnetic barcodes from the conventional magnetic recording card due to the concealing effect.
By reading and collating the magnetic data of the magnetic recording layer 14 and the unique magnetic barcodes 16a and 16b which are different for each magnetic recording card 17, it is possible to obtain the magnetic recording card 17 having a high anti-counterfeit effect.

Further, while preventing the forgery of the magnetic recording card 17, even if the magnetic data of the magnetic recording layer 14 is falsified, by performing complicated signal processing with the magnetic barcodes 16a and 16b, the magnetic recording card 17 can be processed. The forgery of the magnetic recording card 17 can be easily identified.
It becomes possible to surely determine the authenticity of.

That is, reader / writer (R / W)
The magnetic recording degaussing head attached to the magnetic recording layer 14 erases the magnetic recording data of the magnetic recording layer 14 once by direct current or high frequency, and the magnetic bar codes 16a and 16b in the lower layer portion of the magnetic recording layer 14 are connected to the magnetic head, MR By measuring the output waveform with a magnetic sensor such as a sensor, the magnetic recording card 17 can be discriminated and recognized, and the authenticity can be determined. Then, the original transaction of the magnetic recording card 17 can be performed, and the magnetic data recorded in the magnetic recording layer 14 can be recorded again in the magnetic recording layer 14.

As described above, the forgery prevention effect of the magnetic recording card 17 is remarkably improved, and the magnetic recording card 17 is also improved.
It becomes possible to surely determine the authenticity of.

[Second Embodiment] FIG. 6 is a plan view showing a structural example of a magnetic transfer foil medium according to the present invention, and FIG. 7 is a cross-sectional view at the Y position in the magnetic transfer foil medium of FIG.

That is, as shown in FIG. 6 and FIG.
In the magnetic transfer foil medium 11 of this embodiment, a release layer 13 is provided on a support 12 which is a medium substrate by a printing method, coating, etc., and a magnetic recording layer 14 is formed on the release layer 13 by a printing method. A structure in which an adhesive layer 15 is provided by coating or the like, an adhesive layer 15 is provided on the magnetic recording layer 14 by a printing method, coating, or the like, and magnetic random patterns 19a and 19b are provided on the adhesive layer 15 by a printing method or the like. I am trying.

6 and 7, the magnetic random patterns 19a and 19b are schematically shown.

Further, even if the positions of the adhesive layer 15 and the magnetic random patterns 19a and 19b are reversed, that is, on the magnetic recording layer 14, the magnetic random patterns 19a and 19b are formed.
Are provided, and the magnetic random patterns 19a, 19
There is no problem even if the adhesive layer 15 is provided on b.

Here, as the support 12, since the magnetic transfer foil medium 11 is transferred and adhered to a magnetic recording medium substrate such as a card and then peeled and removed from the magnetic transfer foil medium 11 main body, it is mechanically tough. It is possible to use a relatively thin film having flexibility and flexibility, such as a polyethylene film, a polypropylene film, or a plastic film made of a polymer material. And, preferably, this plastic film has a thickness of 12 μm.
A polyethylene terephthalate (PET) film having a thickness of 1 to 100 μm can be used.

As the release layer 13, a polymeric material is applied by a printing method or a coating method so as to have a film thickness of 0.5 μm to 5 μm.
After transferring the magnetic recording medium substrate such as a card, the support 1
2 and the magnetic recording layer 14 must be easily separated.

When the magnetic transfer foil medium 11 is exposed on the surface, a slippery additive such as wax or the like is added to the resin in order to protect the magnetic recording layer 14. There is no problem even if an agent is added.

In this case, as the polymer material, for example, polyvinyl chloride, polyester, polyethylene, acrylic resin or the like can be used alone or in combination,
It is preferable to use an acrylic resin having a good peeling property.

Examples of pigments added to enhance protection include inorganic calcium carbonate, alumina,
Talc, silica and the like can be used, and as the slipping agent, for example, silicon oil, silicon wax, polyethylene wax, carnauba wax, zinc stearate, fluorine-based and the like can be used.

On the other hand, as the magnetic recording layer 14, a magnetic ink in which a magnetic material is dispersed in a polymer material is formed as a magnetic film having a residual magnetic flux density of 300 Gauss to 5000 Gauss by a printing method or a coating method, and has a film thickness. 5 to 20μ
Provide about m.

In this case, as the polymer material, for example, polyvinyl chloride, polyester, polyethylene, acrylic resin or the like can be used alone or in combination,
Polyvinyl chloride and polyester are preferably used.

Further, as the magnetic material, a semi-hard magnetic material having a coercive force of 100 Oe or more capable of performing magnetic recording, or a hard magnetic material such as magnetite, γ-iron oxide,
Powders of metals / alloys such as Co-deposited γ-iron oxide, barium ferrite, strontium ferrite and cumulone dioxide, and metal compounds can be used.

Further, as the adhesive layer 15, since the magnetic transfer foil medium 11 is adhered to another medium, the softening point is 1 degree Celsius.
A polymer material having a temperature of 50 degrees or less is applied by a printing method or a coating method so as to have a film thickness of about 0.5 μm to 10 μm.

In this case, as the polymer material, for example, polyvinyl chloride, polyester, polyethylene, acrylic resin or the like can be used.

Furthermore, as the magnetic random pattern 16, a magnetic ink in which a magnetic material is dispersed in a polymer material is applied by a printing method at a saturation magnetic flux density of 500 gauss to 10000 gauss (at 5 kOe) and a printed film thickness of 5 Or about 20 μm.

In this case, as the polymer material, for example, polyvinyl chloride, polyester, polyethylene, acrylic resin or the like can be used alone or in combination,
Polyvinyl chloride and polyester are preferably used.

The magnetic material is, for example, Fe or N.
i, Mn, Zn, Co, permalloy, sendust, Mn
-Zn ferrite, Ni-Zn ferrite, Mn ferrite, Zn ferrite, FeS, magnetite, γ-iron oxide, Co-deposited γ-iron oxide, barium ferrite, strontium ferrite, powder of metals such as chromium dioxide, platinum, and metal compounds. Can be used.

The magnetic transfer foil medium 1 according to this embodiment is described below.
A specific example of No. 1 will be described in detail.

(Specific Example 1) That is, the magnetic transfer foil medium 11 according to this specific example is a biaxially stretched P film having a thickness of 25 μm.
A support 12 made of an ET film, a release layer 13 provided on the support 12, a magnetic recording layer 14 provided on the release layer 13 and made of a magnetically recordable magnetic material,
An adhesive layer 15 provided on the magnetic recording layer 14 and magnetic random patterns 19a and 19b made of a soft magnetic material provided on the adhesive layer 15 are included.

The magnetic transfer foil medium 11 is manufactured through the following steps.

{Preparation of Magnetic Transfer Foil Medium 11} (Release layer 13 paint) Acrylic resin 30 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight Metal isobutyl ketone 20 parts by weight (Magnetic recording layer 14 paint) PVC resin 20 parts by weight γ -Iron oxide (coercive force 300 Oe) 50 parts by weight Polyester type dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (Adhesive layer 15 paint) Polyester resin 40 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (Magnetic random pattern 19a, 19b ink) PVC resin 20 parts by weight Mn ferrite (coercive force 30 Oe) 50 parts by weight Polyester dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight First, On the support 12 made of a biaxially stretched PET film having a thickness of 25 μm, the above-mentioned coating material for the release layer 13 was applied with a gravure coater at a drying temperature of 110 ° C. and a coating thickness of 1.5 μm to form a release layer. 13 was formed.

Next, the magnetic recording layer 1 is formed on the peeling layer 13.
4 paint using a knife coater, drying temperature 110 ℃
Degree, residual magnetic flux density 1000 gauss, coating thickness 12 μm
To form the magnetic recording layer 14.

Next, a coating material for the adhesive layer 15 was applied onto the magnetic recording layer 14 using a gravure coater to a drying temperature of 100 ° C.
And the coating thickness was 1.0 μm to form the adhesive layer 15.

Finally, magnetic random patterns 19a and 19b inks were applied onto the adhesive layer 15 by a gravure printing method at a drying temperature of 120 ° C., a saturation magnetic flux density of 300 gauss, and a coating thickness of 6 μm. Random patterns 19a and 19b were formed to obtain a magnetic transfer foil medium 11 having high security.

(Specific Example 2) That is, the magnetic transfer foil medium 11 according to this specific example is a biaxially stretched P film having a thickness of 35 μm.
A support 12 made of an ET film, a release layer 13 provided on the support 12, a magnetic recording layer 14 provided on the release layer 13 and made of a magnetically recordable magnetic material,
The magnetic random patterns 19a and 19b, which are provided on the magnetic recording layer 14 and which are made of a soft magnetic material and have different magnetic permeability, and the magnetic random pattern 19 are formed.
a, 19b and the adhesive layer 15 provided on it.

The magnetic transfer foil medium 11 is manufactured through the following steps.

{Preparation of magnetic transfer foil medium 11} (Peeling layer 13 coating material) Acrylic resin 30 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight Metal isobutyl ketone 20 parts by weight (Magnetic recording layer 14 coating material) PVC resin 20 parts by weight Co Adhered γ-iron oxide (coercive force 650 Oe) 50 parts by weight Polyester dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (magnetic random pattern 19a ink) PVC resin 20 parts by weight Mn ferrite (coercive force) 30 Oe) 50 parts by weight Polyester-based dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (Magnetic random pattern 19b ink) PVC resin 20 parts by weight Iron powder (coercive force 30 Oe) 50 parts by weight Polyester Dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (adhesive layer 15 paint) Polyester resin 40 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight First, a biaxially stretched PET film having a thickness of 35 μm The release layer 13 coating material was applied onto the support 12 made of the above using a gravure coater at a drying temperature of 110 ° C. and a coating thickness of 1.5 μm to form the release layer 13.

Next, the magnetic recording layer 1 is formed on the peeling layer 13.
2 Paint with a knife coater at a drying temperature of 110 degrees Celsius
And a residual magnetic flux density of 1000 gauss and a coating thickness of 12 μm were applied to form a magnetic recording layer 14.

Next, the magnetic random pattern 19a ink and the magnetic random pattern 19 are formed on the magnetic recording layer 14.
b ink using screen printing method, drying temperature 80 degrees Celsius, saturation magnetic flux density 3000 gauss (at 5 kOe),
Magnetic random pattern 19 by applying a print film thickness of 10 μm
a and 19b were formed respectively.

Finally, this magnetic random pattern 19
Using a gravure coater on a and 19b, the adhesive layer 15
The coating material was applied at a drying temperature of 100 ° C. and a coating thickness of 1.0 μm to form an adhesive layer 15, and a magnetic transfer foil medium 11 having high security was obtained.

The magnetic transfer foil medium 1 according to this embodiment is described below.
The specific usage method of 1 will be described in detail.

(Specific Example 3) FIG. 8 is a plan view showing an example of a case where the magnetic transfer foil medium 11 according to the present embodiment is transferred to a card substrate 18 which is a transfer medium to form a magnetic recording card 17. 9 is a cross-sectional view of the magnetic recording card 17 of FIG. 8 at the Y position.

In FIGS. 8 and 9, the same elements as those in FIGS. 6 and 7 are designated by the same reference numerals. Further, in FIGS. 8 and 9, the magnetic random pattern is schematically shown.

That is, in FIG. 8 and FIG. 9, as the card substrate 18 which is the transfer target medium for transferring the magnetic transfer foil medium 11 according to the present embodiment, for example, a paper card,
A boarding pass, a passbook, a ticket, a vinyl chloride card, a PET card, or the like can be used, and preferably a vinyl chloride card that can be surface-finished after the magnetic transfer foil medium 11 is transferred to the card base material 18 is used.

That is, the magnetic recording card 17 according to this example comprises a support 12 made of a biaxially stretched PET film having a thickness of 35 μm, a release layer 13 provided on the support 12, and the release layer. A magnetic recording layer 14 formed on the magnetic recording layer 13 made of a magnetically recordable magnetic material; an adhesive layer 15 provided on the magnetic recording layer 14; and a magnetic layer made of a semi-hard magnetic material provided on the adhesive layer 15. A magnetic transfer foil medium 11 is constituted by the random patterns 19a and 19b, and the magnetic transfer foil medium 11 is further thermally transferred to a vinyl chloride card 18 which is a medium to be transferred and bonded by using a thermocompression bonding method. It is configured to be flush with.
Further, a magnetic tape for recording the magnetic random pattern registration data is used as the magnetic transfer foil medium 1 of the PVC card 18.
1 is provided on the side opposite to the side on which thermal transfer is performed.

The magnetic recording card 17 is manufactured through the following steps.

{Preparation of Magnetic Transfer Foil Medium 11} (Release layer 13 coating material) Acrylic resin 30 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight Metal isobutyl ketone 20 parts by weight (Magnetic recording layer 14 coating material) PVC resin 20 parts by weight Co Adhered γ-iron oxide (coercive force 650 Oe) 50 parts by weight Polyester dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (adhesive layer 15 paint) Polyester resin 40 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 Parts by weight (magnetic random patterns 19a, 19b ink) vinyl chloride resin 20 parts by weight γ-iron oxide (coercive force 300 Oe) 50 parts by weight polyester dispersant 2 parts by weight cyclohexanone 10 parts by weight toluene 40 parts by weight methyl ethyl ketone 40 parts by weight First, the release layer 13 coating material was applied onto a support 12 made of a biaxially stretched PET film having a thickness of 35 μm with a gravure coater at a drying temperature of 110 ° C. and a coating thickness of 1.5 μm. The peeling layer 13 was formed.

Next, the magnetic recording layer 1 is formed on the peeling layer 13.
4 paint using a knife coater, drying temperature 110 ℃
And a residual magnetic flux density of 1000 gauss and a coating thickness of 12 μm were applied to form a magnetic recording layer 14.

Next, the coating material for the adhesive layer 15 was applied on the magnetic recording layer 14 by using a gravure coater to a drying temperature of 10 ° C.
The adhesive layer 15 was formed by applying the coating layer at 0 degree with a coating thickness of 1.0 μm.

Next, magnetic random patterns 19a and 19b inks are applied onto the adhesive layer 15 by a screen printing method at a drying temperature of 80 ° C., a saturation magnetic flux density of 3000 gauss, and a printing film thickness of 10 μm. Random patterns 19a and 19b were formed to obtain a magnetic transfer foil medium 11 having high security.

Finally, the magnetic transfer foil medium 11 was adhered to a white PVC card 18 having a thickness of 760 μm by a thermal transfer or thermocompression bonding method so as to be flush with the PVC card 18 to obtain a magnetic recording card 17. It was In addition, a magnetic tape for recording the magnetic random pattern registration data is attached to the PVC card 1
The magnetic transfer foil medium 11 of No. 8 was provided on the side opposite to the side on which the thermal transfer was performed.

(Specific Example 4) That is, the magnetic recording card 17 according to the specific example is a biaxially stretched P having a thickness of 35 μm.
A support 12 made of an ET film, a release layer 13 provided on the support 12, a magnetic recording layer 14 provided on the release layer 13 and made of a magnetically recordable magnetic material,
The magnetic random pattern 19a made of a soft magnetic material provided on the magnetic recording layer 14, the magnetic random pattern 19b made of a semi-hard magnetic material, and the adhesive layer 15 provided on the magnetic random patterns 19a, 19b provide magnetic properties. The transfer foil medium 11 is constituted, and further, the magnetic transfer foil medium 11 is thermally transferred onto a vinyl chloride card 18 which is a medium to be transferred, and is adhered by using a thermocompression bonding method.
It is configured to be flush with. Further, a magnetic tape for recording the magnetic random pattern registration data is provided on the side of the PVC card 18 opposite to the side where the magnetic transfer foil medium 11 is thermally transferred.

The magnetic recording card 11 is manufactured through the following steps.

{Preparation of Magnetic Transfer Foil Medium 11} (Release Layer 13 Paint) Acrylic resin 30 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight Metal isobutyl ketone 20 parts by weight (Magnetic recording layer 14 paint) PVC resin 20 parts by weight Co Adhered γ-iron oxide (coercive force 650 Oe) 50 parts by weight Polyester dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (magnetic random pattern 19a ink) PVC resin 20 parts by weight Mn ferrite (coercive force) 30 Oe) 50 parts by weight Polyester-based dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyme ethyl ketone 40 parts by weight (magnetic random pattern 19b ink) PVC resin 20 parts by weight γ-iron oxide (coercive force 300 Oe) 50 parts by weight Department Poly Stell dispersant 2 parts by weight Cyclohexanone 10 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight (Adhesive layer 15 paint) Polyester resin 40 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight First, biaxially stretched PET having a thickness of 35 μm The release layer 13 coating material was applied onto the support 12 made of a film using a gravure coater at a drying temperature of 110 ° C. and a coating thickness of 1.5 μm to form the release layer 13.

Next, the magnetic recording layer 1 is formed on the peeling layer 13.
4 paint using a knife coater, drying temperature 110 ℃
And a residual magnetic flux density of 1000 gauss and a coating thickness of 12 μm were applied to form a magnetic recording layer 14.

Next, the magnetic random pattern 19a ink and the magnetic random pattern 19 are formed on the magnetic recording layer 14.
b ink, using screen printing method, drying temperature 80 degrees Celsius, saturation magnetic flux density 3000 gauss, printing film thickness 10μ
Then, the magnetic random patterns 19a and 19b were formed by printing with m.

Next, the magnetic random pattern 19a,
The adhesive layer 15 coating material is applied onto 19b with a gravure coater at a drying temperature of 100 ° C. and a coating thickness of 1.0 μm to form the adhesive layer 15, thereby obtaining a magnetic transfer foil medium 11 having high security. It was

Finally, the magnetic transfer foil medium 11 was adhered to a white PVC card 18 having a thickness of 760 μm by a thermal transfer or thermocompression bonding method so as to be flush with the PVC card 18 to obtain a magnetic recording card 17. It was In addition, a magnetic tape for recording the magnetic random pattern registration data is attached to the PVC card 1
The magnetic transfer foil medium 11 of No. 8 was provided on the side opposite to the side on which the thermal transfer was performed.

Next, a method of reading and collating the magnetic recording card 17 onto which the magnetic transfer foil medium 11 of this embodiment is transferred will be described.

FIG. 10 is a schematic diagram showing an example of the flow when the magnetic transfer foil medium 11 manufactured according to this embodiment is applied to the magnetic recording card 17 and magnetic random pattern recognition is performed by the magnetic sensor.

Reading and verification of the magnetic recording card 17 onto which the magnetic transfer foil medium 11 of this embodiment is transferred are performed as follows.

That is, as shown in FIG. 10, first, the magnetic recording card 17 is inserted into the reader / writer (R / W), and the magnetic data written in the magnetic recording layer 14 is once read by the reader / writer (R). / W), and the magnetic recording of the magnetic recording layer 14 is erased by direct current or high frequency.

Next, the data of the magnetic random patterns 19a and 19b under the magnetic recording layer 14 is read and converted into a digital scanning signal by a method known to those skilled in the art.

Next, the magnetic random pattern digital signal data registered in advance on the recording data recording magnetic tape is compared with the correlation count. As a result, if the magnetic recording card 17 is valid (correlation count is 95
If the magnetic recording card 17 is a counterfeit (if the correlation coefficient is 95% or less), the transaction is stopped at that time.

In this system, the magnetic recording card 17
The ID symbol having the ID function based on the cryptographic conversion coding formula can also be used by using the digital scanning signal obtained when scanning is performed.

Next, after the transaction is completed, the data after the transaction built in the reader / writer (R / W) is
Rewriting on the magnetic recording layer 14, after which the magnetic recording card 17 is ejected from the reader / writer (R / W),
A series of transactions ends.

Further, magnetic random patterns 19a, 19
b is a magnetic transfer foil medium 11 in which a plurality of magnetic materials are provided.
Can scan a read bias current with two or more types and scramble the obtained magnetic random pattern data by a method known to those skilled in the art to take a far more advanced anti-counterfeit measure.

Each process of digitizing the read data in FIG. 10, comparing collation data by correlation count, and comparing correlation count with registered data corresponds to the above-mentioned code recognition / collation processing part in FIG. It is a thing.

As described above, in the magnetic transfer foil medium 11 of the present embodiment and the method of using the magnetic transfer foil medium 11, the magnetic transfer foil medium 11 of the present embodiment is subjected to a method such as thermal transfer or thermocompression bonding to a transfer medium 18 such as a card. The magnetic recording card 17 obtained by adhering the recording medium to the transfer medium 18 is flush with the magnetic recording layer 14
Since the magnetic random patterns 19a and 19b capable of ordinary magnetic recording are present in the lower layer portion of the magnetic recording layer, the magnetic recording layer 14 makes it difficult to distinguish the conventional magnetic recording card from the external appearance due to the concealing effect. By reading and collating the magnetic data of the layer 14 and the unique magnetic random patterns 19a and 19b which are different for each magnetic recording card 17, it is possible to obtain the magnetic recording card 17 having a high anti-counterfeit effect.

Further, magnetic random patterns 19a, 19
b itself is different for each magnetic recording card 17, preventing forgery of the magnetic recording card 17, and at the same time, even if the magnetic data of the magnetic recording layer 14 is falsified, a complicated signal with the magnetic random patterns 19a and 19b is generated. By performing the processing, the forgery of the magnetic recording card 17 can be easily determined, and the authenticity of the magnetic recording card 17 can be surely determined.

That is, reader / writer (R / W)
The magnetic recording degaussing head attached to the magnetic recording layer 14 once erases the magnetic recording data of the magnetic recording layer 14 by direct current or high-frequency, and the magnetic random patterns 19a and 19b in the lower layer portion of the magnetic recording layer 14 are transferred to the magnetic head, MR By measuring the output waveform with a magnetic sensor such as a sensor, the magnetic recording card 17 can be discriminated and recognized, and the authenticity can be determined. Then, the original transaction of the magnetic recording card 17 can be performed, and the magnetic data recorded in the magnetic recording layer 14 can be recorded again in the magnetic recording layer 14.

As described above, the forgery prevention effect of the magnetic recording card 17 is remarkably improved, and the magnetic recording card 17 is also improved.
It becomes possible to surely determine the authenticity of.

The present invention is not limited to the above embodiments, but can be implemented in the same manner as described below.

(A) In each of the above embodiments, the magnetic bar code 16a, 16b or the magnetic random pattern 19 is used.
It is preferable that a and 19b are made of a soft magnetic material having a coercive force of 60 Oe or less.

By doing so, it is possible to obtain the effect that it is difficult to recognize the pattern because the magnetic bar code or the magnetic random pattern cannot be visualized with a magnetic fluid or the like.

(B) In each of the above embodiments, the magnetic bar code 16a, 16b or the magnetic random pattern 19 is used.
It is preferable that a and 19b are made of at least two kinds of magnetic materials having a coercive force of 60 Oe or less and different magnetic permeability.

By doing so, different output waveforms can be obtained especially by changing the bias current and reading the pattern. By scrambling (or encrypting) the different waveforms, forgery, falsification, and alteration of the medium can be more effectively eliminated. Also,
Although the correlation coefficient is used in the judgment of random patterns, the correlation coefficient level (similarity level) can be set low because different waveforms can be obtained, and moreover, double checking of the pattern makes effective judgment of authenticity. It is possible to eliminate the forgery, falsification and alteration of the medium.

(C) In each of the above embodiments, the magnetic bar code 16a, 16b or the magnetic random pattern 19 is used.
As a and 19b, coercive force is 60 Oe to 300 O
It is preferable to use the semi-hard magnetic material of e.

By doing so, different output waveforms can be obtained by changing the bias current and reading the pattern. By scrambling (or encrypting) the different waveforms, forgery, falsification, and alteration of the medium can be more effectively eliminated. Also,
Although the correlation coefficient is used in the judgment of random patterns, the correlation coefficient level (similarity level) can be set low because different waveforms can be obtained, and moreover, double checking of the pattern makes effective judgment of authenticity. It is possible to eliminate the forgery, falsification and alteration of the medium.

(D) In each of the above embodiments, the magnetic bar codes 16a and 16b or the magnetic random pattern 19 is used.
As a and 19b, it is preferable to provide a combination of at least two kinds of soft magnetic materials having a coercive force of 60 Oe or less and semi-hard magnetic materials of 60 Oe to 300 Oe.

By doing so, different output waveforms can be obtained especially by changing the bias current and reading the pattern. By scrambling (or encrypting) the different waveforms, forgery, falsification, and alteration of the medium can be more effectively eliminated. Also,
Although the correlation coefficient is used in the judgment of random patterns, the correlation coefficient level (similarity level) can be set low because different waveforms can be obtained, and moreover, double checking of the pattern makes effective judgment of authenticity. It is possible to eliminate the forgery, falsification and alteration of the medium.

(E) In the first embodiment, the data of the magnetic bar codes 16a and 16b in the lower layer of the magnetic recording layer 14 is read and converted into a digital scanning signal, which is converted into a reader / writer (R / W). The case of determining whether or not the magnetic recording card 17 is valid by comparing with the built-in magnetic barcode data has been described, but the present invention is not limited to this, and the second embodiment is not limited to this. In the same manner as in the above case, the magnetic recording card 17 is verified to be valid by collating it with the magnetic random pattern digital signal data registered in advance on the registration data recording magnetic tape provided on the magnetic recording card 17 itself. May be determined.

(F) In the second embodiment, the data of the magnetic random patterns 19a and 19b in the lower layer of the magnetic recording layer 14 is read and converted into a digital scanning signal, which is previously used as a magnetic tape for recording registered data. The case where it is determined whether or not the magnetic recording card 17 is valid by comparing the registered magnetic random pattern digital signal data with the correlation count has been described, but the present invention is not limited to this. In the same manner as in the above embodiment, it is determined whether or not the magnetic recording card 17 is valid by collating with the data for the magnetic bar code built in the reader / writer (R / W). You may do it.

(G) In the second embodiment, as a means for recording registered data for collating with the data of the magnetic random patterns 19a and 19b under the magnetic recording layer 14,
Although the case where the magnetic tape is used has been described, the present invention is not limited to this, and other means such as an IC chip, an optical bar code, a magnetic bar code, or a multidimensional bar code may be used as a medium for recording registration data. Good.

[0158]

As described above, according to the present invention, a peeling layer, a magnetic recording layer and an adhesive layer are sequentially laminated on a substrate, and a magnetic transfer foil medium used for a magnetic recording medium is adhered. A magnetic bar code or a magnetic random pattern is provided either above or below the layer, and when utilizing a magnetic transfer foil medium, a magnetic bar code,
Alternatively, the code recognition / verification of the magnetic random pattern is performed after the magnetic recording on the magnetic recording layer is once DC erased or after high-frequency erased, and after the code recognition / collation, magnetic recording is again performed on the magnetic recording layer. In the magnetic transfer foil medium used for the magnetic recording medium, the effect of preventing forgery of the medium is remarkably improved and the authenticity of the medium can be surely determined, and the use thereof. A method can be provided.

[Brief description of drawings]

FIG. 1 is a plan view showing a first embodiment of a magnetic transfer foil medium according to the present invention.

FIG. 2 is a sectional view of the magnetic transfer foil medium of the embodiment of FIG. 1 at the Y position.

FIG. 3 is a plan view showing an example of a case where the magnetic transfer foil medium of the first embodiment is transferred to a card base material that is a medium to be transferred to form a magnetic recording card.

FIG. 4 is a sectional view of the magnetic recording card of the embodiment of FIG. 3 at the Y position.

FIG. 5 is a schematic diagram showing a flow when the magnetic transfer foil medium of the first embodiment is applied to a card and a magnetic sensor recognizes and collates a magnetic bar code.

FIG. 6 is a plan view showing a second embodiment of the magnetic transfer foil medium according to the present invention.

FIG. 7 is a sectional view of the magnetic transfer foil medium of the embodiment of FIG. 6 at the Y position.

FIG. 8 is a plan view showing an example of a case where the magnetic transfer foil medium of the second embodiment is transferred to a card base material which is a transfer target medium to form a magnetic recording card.

9 is a sectional view of the magnetic recording card of the embodiment of FIG. 8 at the Y position.

FIG. 10 is a schematic diagram showing a flow in a case where the magnetic transfer foil medium of the second embodiment is applied to a card and magnetic bar code recognition / verification is performed by a magnetic sensor.

[Explanation of symbols]

11 ... Magnetic transfer foil medium, 12 ... Support, 13 ... Release layer,
14 ... Magnetic recording layer, 15 ... Adhesive layer, 16a, 16b ... Magnetic barcode, 17 ... Magnetic recording card, 18 ... Card base material, 19a, 19b ... Magnetic random pattern.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G11B 5/80

Claims (12)

[Claims] 1. A magnetic transfer foil medium in which a release layer, a magnetic recording layer, and an adhesive layer are sequentially laminated on a substrate, wherein a magnetic bar code is provided either above or below the adhesive layer. A magnetic transfer foil medium characterized by. 2. The magnetic transfer foil medium according to claim 1, wherein the magnetic bar code is made of a soft magnetic material having a coercive force of 60 Oe or less. 3. The magnetic bar code according to claim 1, wherein the magnetic bar code is made of at least two kinds of magnetic materials having a coercive force of 60 Oe or less and different magnetic permeability. Transfer foil medium. 4. The magnetic transfer foil medium according to claim 1, wherein the magnetic barcode is made of a semi-hard magnetic material having a coercive force of 60 Oe to 300 Oe. 5. The soft magnetic material having a coercive force of 60 Oe or less and 60 Oe to 300 as the magnetic bar code.
The magnetic transfer foil medium according to claim 1, wherein at least two semi-hard magnetic materials of Oe are provided in combination. 6. The method of using the magnetic transfer foil medium according to claim 1, wherein the code recognition / verification of the magnetic bar code is performed by once erasing a direct current from the magnetic recording on the magnetic recording layer or by high frequency. A method of using a magnetic transfer foil medium, characterized in that the magnetic recording foil medium is erased and then magnetic recording is performed again on the magnetic recording layer after the code recognition and verification. 7. A magnetic transfer foil medium in which a release layer, a magnetic recording layer, and an adhesive layer are sequentially laminated on a substrate, wherein a magnetic random pattern is provided either above or below the adhesive layer. A magnetic transfer foil medium characterized by. 8. The magnetic transfer foil medium according to claim 7, wherein the magnetic random pattern is made of a soft magnetic material having a coercive force of 60 Oe or less. 9. The magnetic random pattern according to claim 7, wherein the magnetic random pattern is provided by at least two kinds of magnetic materials having a coercive force of 60 Oe or less and different magnetic permeability. Transfer foil medium. 10. The magnetic random pattern comprises:
The magnetic transfer foil medium according to claim 7, wherein the magnetic transfer foil medium is provided by a semi-hard magnetic material having a coercive force of 60 Oe to 300 Oe. 11. The magnetic random pattern comprises:
The magnetic transfer foil medium according to claim 1, wherein at least two kinds of soft magnetic materials having a coercive force of 60 Oe or less and semi-hard magnetic materials of 60 Oe to 300 Oe are provided in combination. 12. The method of using the magnetic transfer foil medium according to claim 7, wherein the code recognition / verification of the magnetic random pattern is performed by once erasing the direct current from the magnetic recording on the magnetic recording layer or by high frequency. A method of using a magnetic transfer foil medium, characterized in that the magnetic recording foil medium is erased and then magnetic recording is performed again on the magnetic recording layer after the code recognition and verification.