JPH10240894A - Magnetic recording card and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out precise management while maintaining high productivity and to prevent the card from being forged after a punch hole is formed after its use by deforming an uneven part at least at a part of the edge part of a specific partial area through physical operation. SOLUTION: An uneven area Y formed wider than the specific partial area X is shown. The width W of the specific partial area X is set equal to the head width of a magnetic head used actually for a card. The uneven part (bar code part) partially in the areas of edge parts Y1 and Y2 of the uneven area Y is deformed through a press process and flattened in this case, so that only an output less than the threshold value of magnetic detection by the card reader is generated. Namely, a beltlike part with unevenness which is wide is formed at the time of the coating of a main layer and then physical operation is applied to precisely determine a thin beltlike part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording card utilizing magnetic recording, such as a prepaid card or a premium card, and a method for manufacturing a magnetic recording card.

[0002]

2. Description of the Related Art Magnetic recording cards, such as telephone cards, orange cards, and private railway cards, are widely distributed as machine-readable cash vouchers utilizing magnetic recording. However, the advantage of magnetic recording that information can be easily rewritten is the disadvantage that magnetic recording cards can be easily forged and falsified. With the generalization of magnetic recording cards, forgery and falsification prevention have become even more important. I have. Counterfeit,
As a part of the alteration prevention method, a method of providing irregularities (hereinafter, referred to as a magnetic barcode) magnetically detectable as non-rewritable magnetic information on the back surface of the card may be adopted.

[0003]

As a specific method of applying a magnetic barcode, there is a method disclosed in Japanese Patent Application Laid-Open No. 4-318322, and the position of the magnetic barcode can be managed with high accuracy. However, since a manufacturing method called screen printing is employed, the productivity is relatively low and not suitable for mass production. In addition, as a method of adding a magnetic barcode to a card, Japanese Patent Application Laid-Open Nos. 7-210859, 8-055338, 8-111059
However, since the magnetic layer is formed at the time of coating, the positional accuracy of the magnetic barcode when punched into a card is relatively low. It was necessary to set the width of the barcode to be 2-3 times wider than the gap length.

When such a magnetic card is used, even if the magnetic barcode portion is broken by a punch hole (1.2 to 1.3 mm) or the like after use, there is a remaining barcode width, and this portion is re-used. There was a possibility that a modified card was made by using it. If the punched hole is widened to the full magnetic barcode, it cannot be reused.However, increasing the diameter of the punched hole requires a large mechanical force. It is impossible to respond.

According to the present invention, it is possible to control the width of a magnetic bar code with almost the same accuracy as the width of a read head while maintaining high productivity, and to re-use a bar code portion after punching after use. It is an object of the present invention to prevent the production of a falsified card by leaving no card.

[0006]

A magnetic recording card according to the present invention comprises a support and a magnetic recording layer having at least one specific partial area having irregularities which can be magnetically detected by a reader. In the magnetic recording card, at least a part of the specific partial region having the irregularities at the periphery is deformed by a physical operation.

As the physical operation as described above, at least one selected from a pressing process, an embossing process, an etching process using a laser beam, a printing process, and a punching process is used. In addition, it is preferable that the shape of the specific partial region is a band shape when used in a card reader or the like.

A method for manufacturing a magnetic recording card according to the present invention is directed to a magnetic recording card comprising a support and a magnetic recording layer having at least one specific partial area having irregularities which can be magnetically detected by a reader. The method of manufacturing, after once forming the region having the irregularities, by making the magnetic detection of a selected part of the region having the irregularities by applying a physical operation, the irregularities This is a method for manufacturing a magnetic recording card for adjusting the shape of a specific partial area having the following.

As a physical operation as described above, a magnetic recording card is manufactured by using at least one selected from a pressing process, an embossing process, an etching process using a laser beam, a printing process, and a punching process. .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wide magnetic barcode formed in a coating process is deformed or destroyed by applying a physical operation in a subsequent process, except for a range which is actually read by a magnetic head. Information that cannot be read magnetically. As a result of intensive studies, the inventors have found the following physical operation as a method of this deformation or destruction.

1) Deformation or destruction of the concavo-convex shape of a magnetic bar code portion using one or a combination of an embossing process, a pressing process, an etching process using a laser, and a punching process. 2) Deformation or destruction of the concavo-convex shape of the magnetic barcode portion by masking the magnetic barcode portion by printing using magnetic ink.

[0012] By performing at least one of the above methods in at least one of the steps of printing, punching, inspection, packing, and the like in the card manufacturing process, it is possible to obtain an accurate and unnecessary magnetic field. The bar code portion, that is, the portion other than the range actually read by the magnetic head is deformed or destroyed. This makes it possible to reduce the width of the magnetic barcode to almost the same as the length of the head gap used for reading, and it is possible to magnetically detect with a reader by punching a punch hole of the conventional size It is possible to completely remove the entire width of a magnetic barcode.

FIG. 1 is a sectional view of an embodiment of a magnetic recording card, and FIG. 2 is a plan view. Specifically, the configuration is as follows. (Support) The support 1 may be a film or a sheet of a plastic film such as polyester, polyethylene, or nylon, a metal plate such as copper or aluminum, a paper, a net, or the like, alone or as a composite. (Normal Magnetic Recording Layer) The ordinary magnetic recording layer 2 is made of chromium oxide,
Ferromagnetic materials such as iron carbide, metallic iron and barium ferrite,
Gravure coating, knife coating, coating obtained by dispersing a paint obtained by dispersing in a single or mixed resin such as polyurethane resin, polyester resin, vinyl acetate-vinyl chloride copolymer, cellulose resin, epoxy resin, etc.
It is formed by coating the entire surface or a part of the support by printing or the like, followed by drying and curing.

It should be noted that two or more ordinary magnetic recording layers may be provided.

After the normal magnetic recording layer is formed, recording of a magnetic signal (original signal) corresponding to a magnetic bar code signal formed on the magnetic recording layer described later is performed on the normal magnetic recording layer. The original signal may be usually given at the stage when the coating film is dried in the step of applying the magnetic recording layer, or may be given immediately before the coating of the magnetic recording layer in the step of applying the magnetic recording layer. Alternatively, an original signal may be recorded by providing a separate step after coating the magnetic recording layer and before the step of coating the magnetic recording layer.

The location where the original signal is recorded may be recorded in a track on a part of the medium. Alternatively, the information may be recorded on the entire surface. However, when a normal magnetic recording method is used, it is necessary to prevent a magnetic barcode from being formed at a place where normal magnetic recording is performed. The recording method of the original signal may be either an analog recording method or a digital recording method.

(Magnetic Recording Layer) Magnetic Recording Layer 3 A soft magnetic material powder such as Sendust or Permalloy is obtained by dispersing in a simple substance or a mixture of polyurethane resin, polyester resin, vinyl acetate-vinyl chloride copolymer, cellulose resin and the like. The obtained paint is applied on the magnetic recording layer by gravure coating, knife coating, printing, etc., and then dried and cured to form a coating.

The magnetic layer in the magnetic recording layer is shielded by the soft magnetic powder having a high magnetic permeability to prevent the magnetic signal pattern from leaking to the outside. Further, this layer is coated so as to have irregularities and dried to be used as a layer for forming a magnetic barcode signal which cannot be rewritten. The formation of such a non-rewritable magnetic barcode signal is performed as follows.

Prior to the formation of this layer, the magnetic recording layer 2
The original signal is recorded in advance, and after applying a magnetic signal recording layer so that the direction of the magnetic field by this signal is constant, an external magnetic field of an appropriate magnitude in one direction is applied, and the magnetic recording is performed. The original signal of the layer usually generates a magnetic field on the magnetic recording layer, and the magnetic particles in the magnetic recording layer coating move in a manner corresponding to the original signal, and the magnetic particles in the coating have a high density and a low density. Parts arise. Note that the intensity of the applied external magnetic field is usually required to be lower than the coercive force of the magnetic recording layer. This is because if the intensity is high, the original signal recorded on the normal magnetic recording layer may be erased. On the other hand, if the intensity is too weak, the magnetic flux from the original signal is unlikely to appear, so the external magnetic field must be strong enough to cause the magnetic flux to affect the magnetic particles in the magnetic recording layer.

As described above, when the magnetic signal recording layer is dried and cured in a state where the high and low density portions of the magnetic particles in the coating film are formed, the high density portions of the magnetic particles become convex portions and the low density portions become low. Are hardened in the form of recesses to form non-rewritable magnetic signals (bar codes).

The method for applying the magnetic field is not particularly limited, and examples thereof include a method using an electromagnet (solenoid) and a method using a permanent magnet. The magnetic field is preferably applied to a place where the paint is still fluid, that is, near the coater head or between the coater head and the drying oven. It is an object of the present invention to precisely determine a specific portion from the region having the irregularities of the main layer obtained in this way, and to enable magnetic detection by a card reader only in the specific partial region. It is a specific purpose.

The reader of the card detects this unevenness state as a kind of magnetic recording signal as a magnetic flux leaking from the end of the discontinuous surface due to the unevenness or the cut under the DC magnetic field.

In order to obtain a specific partial region having the above-described unevenness, a physical operation is performed on a range having the unevenness formed to be wider than the specific partial region.
In addition, the shape of the specific partial region is often a band shape. FIG. 2 illustrates this band-like state as an example. FIG. 2 is a plan view showing a state in which a layer having irregularities is applied and formed. FIG. 2 shows a region Y having irregularities formed wider than a specific partial region X. The solid line is a barcode represented by unevenness. The width W of the specific partial area X is set to be equal to the head width of a magnetic head actually used in a card reader. The following figure 3
In FIG. 2, the peripheral portions Y1, Y of the region Y having the irregularities shown in FIG.
2 shows a state in which press processing, which is one of the physical operations, is performed on two parts. That is, in FIG. 3, the uneven portion (bar code portion) in the area of the peripheral portions Y1 and Y2 is deformed by the press process, and in this case, the unevenness is flattened and the unevenness can be magnetically detected by the card reader. The output below the threshold is not output. The bar code of this part is represented by a dotted line.

That is, at the time of application of the present layer, a band-like portion having a relatively wide unevenness is formed, and thereafter, a physical operation is applied to accurately determine the narrow band-like portion. Eventually, the magnetic recording card is a magnetic recording card in which at least a part of the peripheral portion of a specific partial area having irregularities is deformed by a physical operation. As can be understood from the above description, FIG. 1 is a cross-sectional view of a partial area X in FIG.

Incidentally, the physical operation is an operation which has an effect of making the above-described magnetic detection of a selected part of the region having the unevenness impossible, and more specifically, an operation in which pressure is applied, An embossing operation and a pressing operation for deforming the uneven shape are exemplified. In addition, irradiating a laser beam to physically deform and destroy a selected part of a region having irregularities, that is, etching is also such a physical operation. Such an etching process may be, for example, an etching process performed by colliding argon atoms or other particles in a vacuum. Drilling a hole further destroys the uneven shape, so this is one of such physical operations. Further, by applying a magnetic ink or the like to a selected part of the region having the unevenness by printing,
The operation of filling the concave portion of the unevenness or covering the convex portion is also a physical operation of deforming the uneven shape. FIG. 1 shows an example in which such a magnetic ink print layer 4 is used.

Among such physical operations, when the embossing operation, the pressing operation, the laser beam irradiation, and the punching operation are performed after the punching of the card shape, the range of the specific partial region having the unevenness is improved. It can be adjusted with high accuracy. Of course, it is also possible to use such operations appropriately in combination. Further, in the case where the magnetic detection of a selected part of the region having irregularities is disabled,
For some selections, it is usually desirable to select the entire range excluding the portion where the head width of the magnetic head scans. Alternatively, magnetic detection may be disabled. Such selective deformation and destruction is useful when a drilling operation is selected among physical operations.

(Visible Information Recording Layer) The visible information recording layer is provided when it is necessary to record information such as the balance of the magnetic recording card as character information which can be visually confirmed. There are a type using thermal destruction, a type using a thermosensitive dye such as a leuco dye, and a type using thermal transfer recording. In FIG. 1, illustration of this layer is omitted. (Protective Layer) The protective layer 5 is a layer provided to protect the magnetic recording layer, the magnetic shield layer, etc., and is at least one kind of polyvinyl acetal, polyvinyl butyral, acrylic resin, polyurethane resin, vinyl chloride-vinyl acetate copolymer. And a resin or a resin such as an epoxy resin, or a paint or ink in which a pigment or a lubricant such as aluminum or titanium oxide is dispersed in the resin. (Normal printing) The normal printing layer 6 is provided on the protective layer 5 to give a decoration to the magnetic recording card, a card use condition, a visible barcode B for machine reading,
This layer is printed on a magnetic recording card such as an OP (overprinting) varnish, and is often formed by offset printing.

(Punch Hole Processing) Punch holes are formed in a specific partial area of the magnetic recording layer 3 having precisely determined irregularities according to the degree of use of the magnetic card by punch hole processing. There is no particular limitation on the shape of the punch holes and the like, but it is desirable to remove a portion wider than the gap length of the magnetic head used for reading the magnetic recording layer from the viewpoint of preventing alteration.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific examples of the method for forming each layer of a magnetic recording card will be described below, but the present invention is not limited to these examples. Unless otherwise specified, all parts in the following Examples except for organic solvents methyl ethyl ketone and toluene are parts by weight of solids.

Embodiment 1 Preparation of Magnetic Recording Card FIG. 1 is a sectional view of a magnetic recording card according to the present invention. Referring to FIG. 1, a method for manufacturing a magnetic recording card according to the present invention will be described. After mixing and dispersing the magnetic paint having the following composition in a sand mill, the following amount of an isocyanate-based curing agent is added, and gravure coating is performed on a PET (polyethylene terephthalate) film having a thickness of 188 μm as the support 1, followed by drying and curing. A normal magnetic recording layer 2 having a thickness of 15 μm was formed. <Normal magnetic recording layer coating> Barium ferrite powder (coercive force 1700 Oersted) 100 parts Polyurethane resin 15 parts (Nipporan N-3113 manufactured by Nippon Polyurethane Industry Co., Ltd.) Partially saponified vinyl chloride-vinyl acetate copolymer 15 parts (Sekisui Chemical Industrial Aeslek A) Methyl ethyl ketone 120 parts Toluene 60 parts Isocyanate curing agent 10 parts (Nippon Polyurethane Industry Co., Ltd. Coronate L)

The above-mentioned gap interval in the normal magnetic recording layer 2
A rectangular wave signal of 750 Hz was recorded as an original signal at a current value of 1 A at a speed of 200 mm / sec by a magnetic head having a track width of 2 mm and a magnetic head of 40 μm. Above, on the magnetic recording layer on which the original signal was recorded, a magnetic recording layer paint of the following formulation dispersed by a sand mill was applied by gravure coating, a magnetic field of 1000 Oersted was applied by a solenoid, dried and cured in a drying oven. A magnetic recording layer having a thickness of 30 μm having an uneven portion (magnetic barcode portion) was formed. In addition, the height difference of the uneven part measured by the stylus-type roughness meter was 6 μm.

<Magnetic Recording Layer Paint> Sendust Powder (flat) 100 parts (average thickness 1.0 micron, average diameter 15.0 microns, aspect ratio 15) 25 parts polyurethane resin (Nipporan N manufactured by Nippon Polyurethane Industry Co., Ltd.) -3113) Dispersant (phosphate ester) 3 parts Methyl ethyl ketone 64 parts Toluene 64 parts

[0034] The physical operation of printing is added to disable the magnetic detection of a selected part of the region having irregularities. Hereinafter, this operation is abbreviated as print destruction. The magnetic ink was subjected to UV offset printing in a sheet state before punching on a card. A magnetic ink having the following composition was solid-printed on a portion excluding a specific partial region X in the region Y having irregularities shown in FIG.

By this printing, the concave portions of the unevenness of the magnetic barcode except for the specific partial region X are filled, and the convex portions are also covered.

<Magnetic Ink> Pigment Carbonyl Iron 30 parts Resin T & K TOKA UV171 Medium 70 parts The thickness of the magnetic ink print layer 4 was 4 microns.
In the case of destruction by offset printing, the thickness of the printing layer is 1-2 μm in one printing, and the output from the magnetic barcode may be incompletely reduced. In such a case 2
If the same printing is repeated up to three times, a sufficient output reduction can be obtained.

The ink having the following composition was kneaded with a three-roll mill, and the resulting ink was offset-printed on the magnetic ink print layer 4, dried and cured to form a 2 μm thick normal print layer 6.
Was formed. In this embodiment, the provision of the protective layer 5 is omitted.

<Protective Layer Paint 1: Offset Printing Ink> Aluminum flakes 40 parts (M-301 manufactured by Asahi Kasei Kogyo Co., Ltd.) Resin T & K TOKA Co., Ltd. UV171 media 70 parts The above magnetic recording medium was punched into a size of 5 × 8 cm. The original signal was demagnetized with a 5000G permanent magnet to obtain a magnetic card.

Example 2 A protective layer paint 2 having the following composition was mixed and dispersed in a sand mill on the magnetic recording layer produced in the same manner as in Example 1, then gravure coated, dried and cured to form a protective layer 5 having a thickness of 2 μm. Was formed. Except for performing the embossing operation instead of disabling the magnetic detection of a selected part of the region having irregularities by adding the physical operation of printing in Example 1 from above the protective layer 5 A magnetic recording card was obtained in the same manner as in Example 1. Hereinafter, this operation is abbreviated as emboss destruction. <Protective layer paint 2: Gravure coating paint> 40 parts of aluminum flake (M-301 manufactured by Asahi Kasei Corporation) 15 parts of polyurethane resin (Nipporan N-3113 manufactured by Nippon Polyurethane Industry Co., Ltd.) Partially saponified vinyl chloride-vinyl acetate copolymer 15 parts (Eslek A manufactured by Sekisui Chemical Co., Ltd.) 40 parts of polyethylene wax (10% toluene dispersion S150D manufactured by Hoechst Japan Co., Ltd.) 170 parts of methyl ethyl ketone 60 parts of toluene 10 parts of isocyanate curing agent (Coronate manufactured by Nippon Polyurethane Industry Co., Ltd.) L)

Thereafter, the card was embossed at the time of punching the sheet from the sheet. An embossing blade is attached to the upper blade of the punching machine, and the card is embossed at the sheet stage by the first vertical movement of the punching blade, and then the sheet is sent out by one card, and the card is punched by the second vertical movement. I pulled it out. The embossing pattern used this time was adjusted by using a mold for perforating the paper and adjusting the setting position and the applied force so as not to deform or make holes in the card support.

In the inspection process after punching into a card,
Embossing is also possible by passing an embossing roll or the like when sending out the card. In this embodiment, the magnetic ink print layer 4 is not provided. This is the same in Examples 3 and 4 below.

Example 3 The procedure of Example 2 was repeated except that the physical operation of embossing in Example 2 was added to disable the magnetic detection of a selected part of the region having irregularities, instead of performing the pressing operation. In the same manner as in Example 1, a magnetic recording card was obtained. Hereinafter, this operation is abbreviated as press breakage.

A metal flat plate was attached in place of the embossing blade used in Example 1 for processing. The setting position and applied force were adjusted so as not to deform or make holes in the card support.

Example 4 The procedure of Example 2 was repeated except that the physical operation of embossing was added to disable the magnetic detection of a selected part of the region having irregularities, but instead of performing an etching operation using a laser beam. A magnetic recording card was obtained in the same manner as in Example 1. The magnetic recording layer was thermally melted or etched using laser light as a physical operation. Hereinafter, this operation is abbreviated as laser beam destruction.

When a laser beam is used, this treatment is preferably performed before laminating the protective layer, most preferably after forming the magnetic recording layer. When the laser treatment is performed after the protective layer, the protective layer is also etched by the laser, exposing the undercoat layer and making the processing mark clear, which is not preferable. In this embodiment, YAG
Using a laser, a metal mask having a rectangular hole at a desired position was placed on the sheet after coating the magnetic recording layer, and etching was performed. After the etching, a protective layer was laminated by offset printing. Specifically, using a YAG laser, a light beam was scanned over the metal mask at an output of 14 W at a speed of 2000 mm / sec to destroy unnecessary portions. Other methods of destroying a magnetic barcode using a laser include a method of using a mirror to scroll the laser beam on the magnetic shield layer at the location where the magnetic barcode is to be destroyed, and a method of fixing the beam and using a condenser lens. There is a method of melting and breaking the drawn magnetic shield layer.

Evaluation 1 Verification of Degree of Impossibility of Magnetic Detection of Selected Part of Region with Irregularities Specifically, measurement of degree of magnetic barcode deformation. The magnetic barcode was deformed and destroyed by various methods according to the method of each of the above embodiments. The magnetic barcode deformation of the magnetic recording layer after the treatment, the output of the normal signal (magnetic barcode) from the area after the destruction, and the noise level were measured.

Specifically, the output of the magnetic barcode recorded by the magnetic card reader was read. A magnetic head (read gap: 40 μm) of a reader was used for applying a bias current, and reading was performed at a bias current of 50 mA. The results are shown in Table 1.

[0047]

[Table 1]

In any of the methods, the normal magnetic barcode output is greatly reduced or the noise level is greatly increased, and it is impossible to obtain the normal barcode output from the deformed barcode portion. Was. Although the output of the normal barcode is not reduced by embossing destruction, a significant signal cannot be reproduced because an abnormal noise output is newly formed.

From the above results, it was confirmed that according to the present invention, unnecessary portions of the magnetic barcode can be effectively destroyed.

2. Dimensional Accuracy of Bar Code Part Twenty cards with magnetic bar codes destroyed by various methods on a table scale were prepared, and the vertical variations of the bar code positions on the cards were compared. The results are shown in Table 2.

[0051]

[Table 2]

* No breakage is a magnetic barcode having a width of 2 mm formed at the time of coating the magnetic recording layer. In each destruction, a magnetic barcode having a width of 3 mm was formed at the time of coating, and only a 1.3 mm width was left at the center by various destruction methods. It has been clarified that the positional accuracy of the magnetic barcode on the card is improved by any of the methods, compared with the case where the magnetic barcode is applied at the time of coating the magnetic recording layer.

From the above, it has been found that the present invention can produce a magnetic card having a magnetic barcode with high positional accuracy while maintaining high productivity in applying a magnetic barcode at the time of coating. In the above embodiment, the specific partial area is a band-like area having a certain width in the running direction of the card on the magnetic track of the magnetic recording card. Needless to say, this range can be adjusted to various ranges such as a rectangular shape and a circular shape depending on the case. Practically, when significant information is contained in the entire magnetic barcode, information such as timing bits of an unnecessary portion, that is, a portion of the selected portion of the region having irregularities, in which magnetic detection is to be made impossible. An extremely high productivity can be obtained by minimizing the deformation and destruction operations because an unnecessary portion cannot be used for falsification or the like by deforming or destroying a very small portion which is a key in reading.

[0054]

As described above, the range of a specific partial region having irregularities can be adjusted with high accuracy while maintaining high productivity. Specifically, the width of the magnetic barcode can be managed with almost the same precision as the width of the read head, and after the punch holes are drilled after use, the reusable barcode portion will not remain, making it possible to produce a modified card. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view of a magnetic recording card of the present invention.

FIG. 2 is a plan view showing a state in which a layer having irregularities is applied and formed on the magnetic recording card of the present invention.

FIG. 3 is a diagram showing a peripheral portion Y of a region Y having irregularities shown in FIG. 2;
FIG. 4 is a plan view showing a state where a pressing process, which is one of physical operations, is performed on the Y1 and Y2 portions.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support 2 Normal magnetic recording layer 3 Magnetic recording layer 4 Magnetic ink printing layer 5 Protective layer 6 Normal printing layer

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kiyoshi Furushiro 1-2 Tatsumicho, Anan-shi, Tokushima Pref. Oji Paper Co., Ltd. Magnetic Media Division (72) Inventor Yuki Shinomiya 1-2 Tatsumicho, Anan-shi, Tokushima Oji Paper Inside the magnetic media business division

Claims (5)

[Claims] 1. A magnetic recording card comprising: a support; and a magnetic recording layer having at least one specific partial area having irregularities that can be magnetically detected by a reader, wherein the specific partial area is provided. A magnetic recording card in which at least a part of the peripheral portion having irregularities is deformed by a physical operation. 2. The magnetic recording card according to claim 1, wherein the physical operation is at least one selected from a pressing process, an embossing process, an etching process using a laser beam, a printing process, and a punching process. 3. The magnetic recording card according to claim 1, wherein the shape of the specific partial area is a band. 4. A method for manufacturing a magnetic recording card comprising a support and a magnetic recording layer having at least one specific partial area having irregularities which can be magnetically detected by a reader, comprising: After forming a region having irregularities, the shape of a specific partial region having irregularities is changed by disabling the magnetic detection of a selected part of the region having irregularities by applying a physical operation. Manufacturing method of magnetic recording card to be adjusted. 5. A method for manufacturing a magnetic recording card according to claim 4, wherein said physical operation is at least one selected from a pressing process, an embossing process, an etching process using a laser beam, a printing process and a punching process. .