JPH117515A - Magnetic card and method for using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent alteration and forgery and to provide a magnetic card having a high degree of security and a method for using the same. SOLUTION: The card is mainly equipped with a card base material 1 and a magnetic recording layer 2; and data corresponding to the card base material 1 of a magnetic card 6, which consists of a printing layer, a silver layer 3 and an overcoat layer 4 as additional layers, a magnetic paint used for the magnetic recording layer 2 painted on the base material, the magnetic card 6, which uses a shape memory resin for a resin used as an ink of the printing layer printed, and a deformation stored in the shape memory resin of the magnetic card 6 is stored in the magnetic card or a card reader, are compared with data corresponding to a deformation of the reproduced magnetic card and the authenticity of the magnetic card is discriminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic card provided with a function for preventing forgery and falsification in a magnetic card, a method of processing the same, and a method of determining authenticity.

[0002]

2. Description of the Related Art Heretofore, for this type of magnetic card, a method of providing a magnetic barcode, an optical barcode, or the like on the surface of the magnetic card to improve security and prevent forgery or falsification has been frequently used.

[0003]

However, in the conventional method, since the barcode is formed by printing or coating, it is not possible to rewrite the barcode pattern once formed during use of the magnetic card. Have difficulty. This has the problem that no matter how complicated the barcode itself is, the possibility of altering the magnetic card remains.

Accordingly, an object of the present invention is to provide a magnetic card which prevents forgery and falsification and has high security, and a method of using the same.

[0005]

Means for Solving the Problems The present invention relates to a magnetic card in which a magnetic recording layer made of a magnetic material is provided on a card substrate as a support, wherein the magnetic card uses a shape memory resin for the card substrate. is there.

The present invention also relates to the magnetic card described above, wherein at least one of a magnetic paint applied as a magnetic recording layer on the card base and an ink for printing characters, patterns, and the like is provided with the card base. It is a magnetic card using the same shape memory resin.

Further, the present invention is the magnetic card according to any one of the above or any one of the above, wherein a shape memory process is performed on a part or all of a plane of the magnetic card.

According to the present invention, there is provided the magnetic card according to any one of the above-mentioned items, wherein an electric signal patterned in accordance with the shape stored in the magnetic card is magnetic data. This is a magnetic card recorded on the recording layer.

Further, the present invention provides the magnetic card according to any one of the above-mentioned items, wherein the authenticity of the magnetic card is determined each time the card is inserted into a card reader and used. After the predetermined processing, the storage shape already stored is restored to another new storage shape, and the corresponding electric signal is rewritten to the processing system including the card reader or the magnetic recording layer of the magnetic card. This is how to use a magnetic card.

According to the present invention, there is provided the method of using a magnetic card according to any one of the above-mentioned items, wherein the shape of the magnetic card is memorized in a concave portion or a convex portion on a part or all of a plane thereof, or Is recovered, the temperature is raised to a temperature not lower than the glass transition temperature (Tg) and not higher than the melting point of the used shape memory resin, a load is applied in a direction of returning the unevenness of the magnetic card to a flat surface, and the magnetic card is cooled as it is. This is a method of using a magnetic card for processing into a flat state.

According to the present invention, there is provided a magnetic card according to any one of the above-mentioned items, wherein the shape stored in the magnetic card is restored in the card reader, and the shape is read by the card reader and finally the electric card is read. Signal, and comparing it with an electric signal corresponding to a storage shape previously given to a processing system including a card reader, identifying whether the storage shape is a predetermined storage shape, and determining whether the magnetic card is authentic. This is how to use a magnetic card.

Further, the present invention uses the magnetic card described in any one of the above to recover the shape stored in the magnetic card in a card reader, read this shape with a card reader, and finally read the electric The use of a magnetic card to determine whether a magnetic card is authentic by identifying whether the signal has a predetermined storage shape or not by comparing the signal with an electric signal obtained from magnetic data corresponding to a storage shape recorded in a magnetic recording layer in advance. Is the way.

[0013]

Embodiments of the present invention will be described.

As shown in FIG. 1, the magnetic card of the present invention comprises a card base material 1 and a magnetic recording layer 2 as main constituents. Silver layer 3 and overcoat layer 4
Further, characters and patterns are displayed on the surface of the card base material, and a printing layer for decoration and information presentation is formed with ink. The magnetic card of the present invention uses a shape memory resin as a resin of the magnetic base material 1 and the magnetic paint for the magnetic recording layer 2 applied on the base material and the ink to be printed. In addition, a magnetic card which has a non-planar portion (deformed portion) in a part or all of the planar state or has a deformed state in which a deformed state obtained by restoring a previously stored shape is restored to a planar shape, or the like. As a method of returning the shape to a flat surface, the magnetic card is heated to a temperature equal to or higher than the glass transition temperature (Tg) of the shape memory resin used for the magnetic card and equal to or lower than the melting point. The magnetic card is returned to a flat state by cooling while applying a load in the direction of change. Also, at the time of actual use, the shape stored in the card reader or the like is restored, the restored stored shape is read, converted into an electric signal, identified by comparing it with a magnetic card or an electric signal given to the card reader in advance, and the card is read. Is to determine the authenticity of.

In addition, the storage shape of the magnetic card is restored, the discrimination is made by the restored shape, and then another deformation is stored in the magnetic card. After that, the magnetic card is returned to the flat state by the above-described method, and the shape-memorized deformation is stored as magnetic data in the magnetic recording layer of the magnetic card. By authenticating the magnetic data of the recording layer, the authenticity of the magnetic card can be determined.

The deformation pattern of the magnetic card has an infinite possibility, and the correspondence between the deformation and the conversion to magnetic data also has an infinite pattern. The magnetic card itself can store different deformation data every time. Can be further improved.

[0017]

Embodiments of the present invention will be described below with reference to FIG.

(Example 1) A card base material 1 was prepared by adjusting a urethane-based shape memory resin into a sheet having a thickness of 188 µm. Thereafter, barium ferrite powder having a coercive force of 2750 Oersted was mixed and dispersed in the same urethane-based shape memory resin as the card base material 1 as a magnetic recording layer 2 on one side of the sheet, and the whole was coated with a thickness of 5 μm. Thereafter, the barium ferrite powder was subjected to magnetic orientation in the longitudinal direction of the card, dried and cured.

Further, characters were printed on the entire surface of the card base material opposite to the magnetic recording layer with the colored ink of the shape memory resin, dried and cured.

Thereafter, a silver layer or an overcoat layer was applied to a thickness of about 3 μm on the magnetic recording layer 2 and dried.

Here, the coated and dried sheet is cut into a card shape, and as shown in FIG. 2A, the whole is curled by about 3 mm toward the magnetic recording layer 2 (by the card warpage measurement method of JISX6311). Two wavy peaks (curls) extending in a direction perpendicular to the traveling direction of the magnetic card were formed, and the deformation was stored in the card at a temperature equal to or higher than the melting point of the shape memory resin used.

At this time, values of distances A1 and B1 from the end of the magnetic card to the peak of the convex portion of the mountain (curl) and heights X1 and Y1 from the reference plane 7 to the peak of the convex portion are obtained. The upper 1 digit of each is rounded to the next digit and arranged as an integer.
Recording was performed on the magnetic recording layer of the magnetic card.

As shown in FIG. 2B, the shape of the deformation is memorized by the above-described method, and the magnetic card 6 on which the information specific to the shape is recorded is replaced with the glass of the shape memory resin used for this. It was sandwiched from above and below by an iron plate 5 heated to a temperature not lower than the transition temperature (Tg) and not higher than the melting point, and held for 30 seconds. Then, the magnetic card 6 was cooled to a temperature equal to or lower than Tg of the shape memory resin while the magnetic card 6 was held therebetween.

As shown in FIG. 2C, the magnetic card 6
Was held at the above temperature by the iron plate 5 and cooled as it was, whereby the curl amount could be returned to a flat state of almost 0 mm.

Next, in order to restore the memory shape of the magnetic card, as shown in FIG. 2 (d), the magnetic card was subjected to a glass transition temperature (Tg) of the used shape memory resin.
Approximately 30 at the temperature below the melting point and no external load.
Heated for seconds. After that, when the temperature was cooled to the glass transition temperature (Tg) or lower, the curl of two peaks of about 3 mm to the side of the magnetic recording layer whose shape was initially stored was reproduced.

At this time, the curl amount of each mountain and the position of the convex portion were measured, and numerical values A2, B2, X
2, Y2 were obtained, and the initial curl state was digitized and compared with the values A1, B1, X1, and Y1 recorded on the magnetic card, and as a result, the same value was determined.

Next, the magnetic card 6 is moved about 4 m away from the magnetic recording layer 2 by the shape memory method described above.
The curled shape of m was stored in a shape memory, and a numerical value of the stored shape was recorded on the magnetic recording layer. Next, the magnetic card was returned to the planar state by the above-described method, and thereafter, when the storage shape was restored, the curl on the side opposite to the magnetic recording layer was reproduced. When the value obtained by digitizing the curl state was compared with the value recorded on the card, they coincided with each other, and the authenticity was determined. In this example, the data is compared with data stored in a card in advance. However, it is needless to say that the same can be determined in a case where the data is stored in a processing system including a card reader in advance.

Further, it was confirmed that the shape storage, flattening, and reproduction of the stored shape of the deformation of the magnetic card can be repeatedly executed.

In this embodiment, the card base material, the magnetic recording layer,
Although the description has been made with the magnetic card using the same shape recording resin as the printing layer, the effect of the present invention can be obtained if at least the card base is made of the shape memory resin. That is, the thickness of the card base material generally used as the support of the magnetic card is about 200 μm or more, but the other layers are at most 10 to 2 in total.
This is because the deformation can be sufficiently reproduced by the restoring force of the card base material, which is as small as 0 μm. The reproducibility at the time of restoration is improved by using the same shape memory resin for layers to be added, such as a magnetic recording layer, a printing layer, and a silver layer, in addition to the card base material. In particular, the magnetic recording layer and the printing layer applied and printed on both sides of the card base material are made of the same shape memory resin, thereby improving the reproducibility at the time of restoration and ensuring the durability. There is.

Further, in the embodiment of the present invention, the height of the mountain and the distance from the end of the apex are numerically expressed as electric signals (numerical information) corresponding to the deformation whose shape is recorded in advance in a card reader or a magnetic card. We used the arranged ones, but it is not necessary to be concerned with this. As long as the number of peaks, the curvature of the peaks, and other measurable values can be used, it can be used, and the method of numerical arrangement also depends on the capabilities of the arithmetic unit and storage device, but there are many methods within the required security range. Can be adopted.

As a flattening method, a glass transition temperature (Tg) of a shape memory resin used for a magnetic card is used.
Although the magnetic card is sandwiched from above and below by an iron plate at a temperature equal to or lower than the melting point and then cooled, the method is not limited to this method. That is, the present invention provides a processing method for flattening without losing the shape memory effect of the magnetic card, for example, the magnetic card may be kept in this temperature range and cooled while applying a load for flattening. Needless to say, a method using a hot roll in a temperature range is sufficiently possible.

[0032]

According to the present invention, in the above-mentioned magnetic card, a specific shape can be deformed by using a shape memory resin for the magnetic base material applied and printed on the card base material and the base material and the ink resin. Can be stored in memory, the magnetic card can be returned to a flat state, the stored shape can be recovered, and further, storage and restoration can be repeated. By collating with the recorded and reproduced deformation state, forgery and alteration can be prevented, and a highly secure magnetic card and a method of using the same can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a magnetic card according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram for explaining storage and restoration of a storage shape of a magnetic card according to an embodiment of the present invention. FIG. 2A is a diagram showing a state where a shape is stored so as to curl toward a magnetic recording layer side. ,
FIG. 2B is a diagram showing a state where the magnetic card of FIG. 2A is flattened by sandwiching an iron plate, FIG. 2C is a diagram showing a state where the magnetic card is flat, and FIG. FIG. 7 is a diagram showing a state in which a stored shape is restored.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Card base material 2 Magnetic recording layer 3 Silver layer 4 Overcoat layer 5 Iron plate 6 Magnetic card 7 Reference surface A1, A2, B1, B2 Distance from magnetic card end to convex part vertex X1, X2, Y1, Y2 reference Height from surface to convex vertex

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI G11B 5/80 G07F 7/08 D

Claims (8)

[Claims] 1. A magnetic card having a magnetic recording layer made of a magnetic material provided on a card substrate as a support, wherein a shape memory resin is used for the card substrate. 2. The magnetic card according to claim 1, wherein at least one of a magnetic paint applied to the card base material as a magnetic recording layer and ink for printing characters and patterns is the same as the card base material. A magnetic card using a shape memory resin. 3. The magnetic card according to claim 1, wherein a shape memory process is performed on a part or all of a plane of the magnetic card. 4. The magnetic card according to claim 1, wherein an electric signal patterned according to a shape stored in the magnetic card is magnetic data as magnetic data. A magnetic card recorded on a magnetic recording layer. 5. The magnetic card according to claim 1, wherein each time the magnetic card is inserted into a card reader and used, the authenticity of the magnetic card is determined. After a predetermined process, the storage shape that has already been stored is restored to another new storage shape, and data corresponding to this is stored in a processing system including a card reader or a magnetic recording layer of the magnetic card. A method for using a magnetic card, wherein the magnetic card is written on a magnetic card. 6. The method of using a magnetic card according to claim 1, wherein the shape of the magnetic card is partially or entirely stored in a concave portion or a convex portion, or stored. After recovering the shape, the temperature of the used shape memory resin is raised to a temperature not lower than the glass transition temperature (Tg) and not higher than the melting point. A method for using a magnetic card, wherein the magnetic card is processed into a flat state. 7. A magnetic card according to claim 1, wherein the shape stored in the magnetic card is recovered in a card reader, and the shape is read by a card reader and finally the electric card is read. Signal, and comparing it with an electric signal corresponding to a storage shape previously given to a processing system including a card reader, identifying whether the storage shape is a predetermined storage shape, and determining whether the magnetic card is authentic. How to use a magnetic card. 8. Using the magnetic card according to claim 1, recovering the shape stored in the magnetic card in a card reader, reading the shape with a card reader, and finally reading the shape. An electrical signal is compared with an electrical signal obtained from magnetic data corresponding to a storage shape recorded in a magnetic recording layer in advance, and whether or not the storage card has a predetermined storage shape is identified to determine whether the magnetic card is authentic. How to use a magnetic card.