KR930003424B1 - Magnetic recording card and its data recording method - Google Patents

Abstract

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Description

Magnetic recording cards, data recording methods and record reading devices

1 (a) and 1 (b) are front and rear views showing the shape of the magnetic card according to the present invention.

2 is a spectral characteristic diagram of an ink used in an invisible light discriminant recording section in a card according to the present invention.

3 is a cross-sectional view showing the structure of an invisible light identification record of a east card.

4 is a spectral characteristic diagram of a sensor used for reading the invisible light identification record of the card.

5 (a) and 5 (b) are conceptual views for explaining each operation of writing and reading various data for the card.

FIG. 6 is a block diagram showing the configuration of a magnetic card reader / writer for performing the operations shown in FIGS. 5 (a) and 5 (b).

7 is a plan view showing an example of the card of the present invention.

8 is a schematic enlarged cross-sectional view in the direction A-A of FIG.

9 and 10 are enlarged cross-sectional views showing a specific configuration example of the card of the present invention, and Fig. 9 is a view showing that the magnetic recording section and the infrared recording section are on the same side of the card.

10 shows what is on the other side.

The present invention relates to an anti-counterfeiting technology of a magnetic card, and more particularly, to a data recording method and a record reading apparatus of a magnetic recording card in combination of magnetic data recording and nonmagnetic data recording.

In recent years, so-called magnetic cards that record data magnetically are turning out. There are two kinds of magnetic cards, namely, a user specifying a user by a cancer code including a cache card, and a user who does not specify a user as a representative example of a telephony card that has been introduced very recently. have.

Here, since the former has a cancer number, even if a card is forged, it cannot be used as it is, but the latter does not use the cancer number, so there is a high possibility of counterfeit cardard due to replication.

Thus, various counterfeit prevention measures have been conventionally adopted. The first is to use the password number, but this cannot be harvested without specifying the user. Moreover, even if the user is specified, the magnetic record can be visually discriminated by developing with iron or the like, so that the cancer number can be decoded. The second method is to bury the special elements other than the magnetic data so that they are not visible in the card and to determine the authenticity by detecting the presence or absence of this special element. The third is to install visually viable records such as special patterns with fine lines, printing of special characters and holograms, etc., but this is valid for humans but difficult to identify on machines. The fourth method is a method of writing data using a predetermined algorithm at the time of data writing, but this is also ineffective for duplication. The fifth is a method in which the magnetic recording layer is composed of a plurality of magnetic layers having different properties so that they cannot be read without using a special device. However, since the number of magnetic materials having different properties is small, knowledge can be easily recognized.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-described point, and an object thereof is to provide a magnetic recording card and a data recording method thereof, which cannot be simply forged.

It is another object of the present invention to provide a magnetic card data record reading apparatus in which countermeasures are taken so as not to be forged simply.

In order to achieve this object, the present invention provides a magnetic recording unit and an invisible discriminant recording unit in any part of the card, records variable data in the magnetic recording unit, and records card-specific data in the invisible discriminant recording unit. A magnetic recording card and a data recording method for recording security data formed according to a predetermined algorithm from card-specific data and the variable data in the magnetic recording section.

In the present invention, a card having card-specific data that can be identified by invisible light is used, and in magnetic recording, a function of reading the card-specific data and variable data to be written in the magnetic recording section, and The function of calculating security data from card-specific data and magnetically recording the security data and other data, and the function of reading the card-specific data and each magnetic data at the time of card reading, and card-specific data and reading The present invention provides a magnetic card record reading apparatus having a function of calculating security data from one piece of magnetic data and comparing the security data recorded in the magnetic recording section with each other.

Next, the Example of this invention is described based on an accompanying drawing.

Fig. 1 (a) and Fig. 1 (b) show the shape of the magnetic card according to the present invention. Fig. 1 (a) shows the front side and Fig. 2 (b) shows the back side, respectively. . In FIG. 1, (1) is a magnetic card, and the magnetic recording portion 2 is provided in the center upper part of the front side in the longitudinal direction, and the timing mark 3 is connected in the longitudinal direction in the lower center of the back side. And an invisible light discriminant recording section made up of the mark 4 of card-specific data. In FIG. 1, the invisible light discriminant recording unit and the magnetic recording unit 2 are arranged on opposite sides of the card, but may be the same surface.

The magnetic recording unit 2 is a magnetic stripe in a general magnetic card, and records, for example, variable data such as an amount of money and security data described later. The invisible light discriminant recording section is composed of two kinds of marks, namely the timing mark 3 and the carded unique data mark 4, and these data are recorded by printing using an invisible light absorbing ink.

2 shows the spectral characteristics of an invisible light absorbing ink, and (5) shows an ink having absorbency in an invisible light region, that is, an infrared region with a wavelength of 700 nm or more, for example, Nihon Kayaku Co., Ltd. IR-750, 770, 840, and the like are mixed in a vehicle and manufactured, and the ink 5 is used for the timing mark 3 and the card-specific data mark 4 in FIG. 1 (b). The print is recorded at a predetermined position on the card surface. Since the illustrated ink 50 is somewhat light absorbing even in the visible region, it is possible to visually mark the mark, so that the cover printing on the marks 3 and 4 is performed using the visible light absorbing ink 6 for the purpose of hiding the ink. do.

This visible light absorbing ink 6 should be less absorbent to the infrared region. This is because, in the infrared region, the marks 3 and 4 cannot be read unless the inks 5 and 6 are clearly distinguishable in characteristics.

FIG. 3 shows a method of printing the timing mark 3 and the card-specific data microphone 4 of FIG. 1 (b), wherein the timing mark 3 and the card are formed by the invisible light absorbing ink 5 on the card surface. The unique data 4 is printed and printed with ink 6 having low absorption in the invisible light region in order to hide the mark thereon. Printing for concealment can be done without full-width kerning, but printing irregular random pictures has a more significant effect of concealing the mark.

As a result, the mark 4 and the timing mark 3 of the card-specific data by the invisible light absorbing ink 5 are not seen, and therefore, the presence of these marks is not clearly recognized. The mark can be read by irradiating the mark recording surface of the magnetic card with an infrared ray by a light emitter and detecting the infrared light from the card surface with the light receiver.

4 shows the spectroscopic characteristics of the transmitter and the receiver, (a) is that of the receiver, and (a) to (c) is that of the transmitter. The characteristics of the light receiver are about 800 nm, and the light emitter shows three types of peaks at 700 nm, 900 nm, and 1000 nm, but in practice, it is considered that the best one is 900 nm. In addition, the use of an infrared transmission visible light cut filter for the transmitter and the receiver increases the effect.

5 (a) and 5 (b) conceptually illustrate the flow of data for writing data to the magnetic recording section 2 of the magnetic card 1 and reading data from the magnetic card 1. It is shown.

As an example, first, when writing to the magnetic card, the card-specific data read out from the marks 3 and 4 in the mark recording section of the card according to the present invention and the new magnetic recording section as shown in FIG. Is converted into security data according to a predetermined algorithm and then written to the security data recording section of the magnetic recording section 2, and the variable data is written to the magnetic recording section 2 as it is.

As shown in FIG. 5 (b), the reading of the data from the magnetic card is performed. The variable data of the data read out from the magnetic recording section is secured data according to a predetermined algorithm together with card-specific data read out from the mark recording section. It is converted to, and checked against security data read from magnetic card. As a result, it is judged whether the magnetic card which has been read passes or fails.

FIG. 6 shows the structure of the magnetic card reader / writer for data writing to and reading data from the magnetic card shown in FIGS. 5 (a) and 5 (b). In the figure, reference numeral 10 denotes a magnetic read / write section which writes data to the magnetic recording section 2 of the magnetic card 1 and reads data from the magnetic recording section 2, and the magnetic writing head 11 and the magnetic field. A read head 12, a magnetic data write circuit 13, and a magnetic data read circuit 14 are provided. Reference numeral 20 denotes a unique data reading unit, and includes a light projector 21, a light receiver 22, and a unique data reading circuit 23. In addition, 30 is an MPU part comprised in a microprocessor etc., for example, and 40 is an external device.

Writing to the magnetic card in the magnetic card reader / writer first reads the unique data of the card to the unique data reading unit 20. In addition, the variable data is read from the magnetic recording section 2 to the magnetic reading head 12 of the magnetic reading section 10, and the MPU section 30 obtains a signal from an external device, for example, a telephone, and writes a new data. Variable data is created, and security data is created in the MPU 30 from card-specific data read out first and this variable data. Then, the variable data and security data to be newly written are written to the magnetic recording section 2 of the card by the magnetic writing head 11.

Thus, when a magnetic card with data written on it is placed on the magnetic card reader / writer to make a phone call, the card is sent in the scanning direction by a syringe port not shown in the drawing, and the magnetism of the magnetic reading writing unit 10 The data of the variable data and the security data are read by the reading head 12 and given to the MPU unit 30 via the magnetic data reading circuit 14. On the other hand, in the unique data reading device unit 20, the magnetic card surface is irradiated by the light projector 21, the reflected light is detected by the light receiver 22, and the MPU unit 30 through the unique data reading circuit 23. Is given in

The MPU unit 30 converts the unique data of the variable data read from the magnetic card into the security data according to a predetermined algorithm in the MPU unit 30, and the security data read from the magnetic card is also transferred to the MPU unit 30. Is given. The MPU unit 30 compares the security data obtained by the conversion with the read security data and generates a pass or fail output depending on whether or not they match.

If it passes, the telephone outputs the permission signal, obtains a signal corresponding to the telephone usage, and writes new variable data obtained by subtracting the original variable data into the magnetic recording unit 2 of the magnetic card 1. .

Further, new security data is created from the variable data and card-specific data, and the security data is written together with the new variable data. The writing is as described above. If it fails, it outputs a disable signal of the telephone.

7 to 10 show specific examples of a card used in the present invention. When these are explained based on these drawings, a card having a representative magnetic recording section according to the present invention is as shown in Figs. In addition, the magnetic recording unit 2 and the infrared recording unit 9 are installed on the cardiac base material 1, and the necessary information can be viewed as a card, and the infrared recording unit 9 is formed by the infrared ray reflecting layer 91. It is characterized by consisting of an infrared absorption layer 92 thereon.

The present invention card is described with reference to the drawings because there are various embodiments as follows.

In a preferred embodiment, one or two or more kinds of the concealment layer 101, the print layer 102, and the protective layer 103 are provided in this order outside the infrared absorbing layer. The example shown in FIG. 8 is equipped with all three types.

The embodiment shown in FIG. 9 is a specific example that can be carried out using the current cardiac manufacturing technique. The magnetic recording unit 2 is mounted on one side thereof with a center core 8 made of milky white polyvinyl chloride. And an oversheet 7 of polyvinyl chloride having the infrared recording section 9 laminated on the other side by thermal press. In this example, the milky-white polyvinyl chloride center core 8 also serves as the infrared reflecting layer 91. Although the magnetic recording section 2 and the infrared recording section 9 are on the same side of the card, they may be on the other side.

As a specific example which is also easy to carry out the embodiment shown in FIG. 10, a polyvinyl chloride oversized sheet is formed on one side with an infrared recording unit 9 provided on one side of the center core 8 of milky white polyvinyl chloride. 7) is laminated on the other side of the polyvinyl chloride overlying sheet 7 'provided with the magnetic recording section 2 by hot pressing. In this example as well, the milky-white polyvinyl chloride center core 8 also serves as an infrared reflecting layer.

Although the magnetic recording section 2 and the infrared recording section 9 are on the other side of the card, they may of course be on the same side.

The cardiac base material is sheet or plate-like, and as the material thereof, polyvinyl chloride, nylon, cellulose diacetate, cellulose triacetate, polystyrene, polyethylene, polypropylene, polyester, polyimide, poly Plastics such as carbonate, metals such as aluminum, paper, impregnated paper, and the like can be used alone or as a composite. What is necessary is just to select the preferable material from the said material in consideration of the physical property requested | required of a base material, for example, strength, rigidity, concealability, light impermeability, etc. The thickness of a base material is about 0.005-5 mm. In the case of serving as an infrared reflecting layer, milky white polyvinyl chloride is preferable.

Magnetic recording part is γ-Fe ₂ O ₃ , Co-coated γ-Fe ₂ O ₃ , Fe ₂ O ₄ , CrO ₂ , Fe-Cr, Fe-Co, Co-Cr, Co-Ni, MnAl, Baferrite, Srferrite Disperse the known magnetic fine particles in a suitable resin or ink vehicle can be formed on the substrate by a coating method such as gravure method, roll method, knife edge method or the like. The magnetic recording section may also be formed as a thin film on a substrate by a metal or an alloy such as Fe, Fe-Cr, Fe-Co, Co-Cr or the like by vacuum deposition, spatter, plating or the like.

When the magnetic recording portion is formed by coating, the film thickness is about 1 to 100 mu, preferably about 5 to 10 mu. When the magnetic recording portion is formed by vacuum deposition, spatter, plating, or the like, the film thickness thereof is about 100 m to 1 m, preferably about 500 m to 1000 m.

Resin or ink bakelite, which disperse magnetic particles such as γ-Fe ₂ O ₃ , is butyral resin, vinyl chloride-vinyl acetate copolymer resin, urethane resin, polyester ester resin, cellulose resin, acrylic resin, styrene-maleic acid Copolymer resin etc. are used, A rubber-type resin, such as a nitrile rubber, urethane elastomer, etc. are added as needed.

The infrared radiation layer is formed by using a paint or ink obtained by dispersing a pigment having a high reflectance of infrared rays in a binder. The binder may be cellulose derivatives such as ethyl cellulose, ethyl hydroxyethyl cellulose, cellulose acetate propionate, cellulose acetate, styrene resins such as polystyrene, poly-α-methyl styrene, polymethyl methacrylate, polymethyl methacrylate, Acrylic or methacrylic resins such as ethyl polyacrylate and butyl polyacrylate, rosin, rosin modified maleic acid resin, rosin modified phenol resin, rosin ester resin such as polymerized rosin, polyvinyl acetate resin, coumarone resin, vinyl toluene resin, It is selected from vinyl chloride resin, polyester resin, polyurethane resin and butyra resin. If necessary, plasticizers and various other additives are used. Formation of a layer may be carried out by a coating or printing method such as a conventional gravure method, roll method, knife edge method or offset method.

The infrared absorbing layer is formed by dispensing or printing a quinocyanin, thiasianin, etc. having high absorption of infrared rays in the same binder as the one used for the infrared emitting layer.

The concealment layer is formed by applying or printing as a paint or ink by adding various pigments as above, and adding various pigments that transmit infrared rays but not visible light.

The printing layer prints and installs a desired picture by a known ink and printing method. Like the concealed layer, it is preferable to use an ink that reflects or absorbs visible light and transmits infrared light.

The protective layer can be formed by lamination of a synthetic resin film, extrusion coating or application of synthetic resin. The synthetic resin constituting the protective layer may be the same as the synthetic resin used for the formation of the reflective layer in consideration of the use and the adhesiveness with other layers. The use of a thermosetting synthetic resin is advantageous in terms of the hardness of the surface and the prevention of contamination. Particularly, the use of a coating material containing an ultraviolet curing synthetic resin is preferable since it can be quickly cured after application.

The magnetic recording unit and the infrared recording unit may be formed on a transfer sheet or a sheet to be attached separately from the card base, and may be attached to the card base.

When the infrared ray is irradiated to the card of the present invention, as shown in FIG. 8, the portion where the infrared absorbing layer 92 of the infrared recording unit 3 exists almost does not reflect infrared rays, while the portion not present is an infrared reflecting layer therein. Since (91) is provided, the infrared rays are reflected at a high rate.

From this difference in reflectance, characters and patterns are read for authenticity determination.

Since the difference in reflectance is large, there is virtually no misreading.

In the preferred embodiment in which the concealment layer 4 that transmits infrared rays on the infrared absorbing layer 92 is not detected even if the infrared absorbing layer 92 is provided, the characters and patterns cannot be discriminated visually. .

In addition, by providing a print layer 5 such as fingerprints, pictures, and characters, the effect can be further enhanced.

Example 1

The magnetic coating of the following formulation was prepared. (All parts are parts by weight.)

A magnetic paint was coated on the position shown in FIG. 7 of the polyvinyl chloride sheet having a thickness of 100 mu to form a magnetic recording portion having a thickness of 10 mu.

The coating material for infrared radiation layers of the following formulation was prepared.

The infrared reflecting paint was gravure coated at a different position on the same plane as the magnetic recording portion shown in FIG. 7 of the polyvinyl chloride sheet having a thickness of 100 µ used for the card substrate, and an infrared reflective layer having a thickness of 2 µ was formed.

The coating material for infrared absorption layers of the following formulation was prepared.

The paint for infrared absorption layer was coated on the infrared reflection layer by the gravure printing in the bar code pattern, and the infrared absorption layer of 2 micrometers in thickness was formed.

The coating material for the concealed layer of the following formulation was prepared.

The silver pedestal coating material was gravure coated on the infrared absorption layer to form a silver pep layer having a thickness of 1 mu.

The coating material for printing layers of the following formulation was prepared.

Gravure printing was carried out on the concealment layer using this print layer paint to form a printed layer having a thickness of 1 mu.

The coating material for protective layers of the following formulation was prepared.

The protective layer paint was gravure coated on the printed layer to form a protective layer having a thickness of 0.5 mu.

The enemy recording unit was formed in the above procedure. In this order, the magnetic recording portion and the enemy recording portion were formed on the same side of the polyvinyl chloride overcoat as the center core of 560μ thick milky polyvinyl chloride, and also the 100μ thick polyvinyl chloride overcoat. Stacking was laminated by hot pressing under conditions of 150 ° C. and 25 kg / cm 2, and finished and punched to obtain a card having the configuration shown in FIG. 9 having a length of 86 mm, a width of 54 mm, and a thickness of 0.76 mm. .

In this way, the information on the magnetic record of the manufactured card was well written and read, and the authenticity of the infrared was easy and accurate.

Example 2

A gravure coat of the same magnetic coating as in Example 1 was carried out on a sheet of polyvinyl chloride having a thickness of 100 mu to form a magnetic recording portion having a thickness of 10 mu.

Next, the same red recording part was formed on one side of the center core of 560 micrometers milky-white polyvinyl chloride using the paint similar to Example 1.

Overlaid with 100 µm polyvinyl chloride overlying on one side of the center core, the sheet of polyvinyl chloride provided with the magnetic recording section on the other side was laminated, and laminated by heat press under conditions of 150 ° C and 25 kg / cm2. After finishing and punching, a card having the configuration shown in FIG. 10 was obtained. Similarly to Example 1, this card was also capable of writing, reading and discriminating infrared rays into the magnetic recording section.

[Modification]

In the above embodiment, the reflection type is used for recording the card-specific data on the magnetic card, but this may be changed to the transmission type.

In this case, the transmitter 21 and the receiver 22 of the unique data reading unit 20 should be disposed on opposite sides of the card.

In addition, a material (ink) having absorbency in the ultraviolet region may be used as the material giving card-specific data, or a material that emits fluorescence. If the ink is completely invisible, printing by coating ink may be omitted. Further, in the above embodiment, card-specific data is assigned to a timing mark and a corresponding mark, but this may be a bar code or an OCR, and the same effect can be obtained.

The present invention provides a magnetic card that is difficult to forge because the invisible light identification recording unit is provided on the magnetic card surface where the variable data is recorded in the magnetic recording unit, and the card-specific data is recorded in the recording unit as described above. can do.

In other words, counterfeiting is the easiest by cloning, but the card-specific datamark is invisible to the eye and difficult to find where and how. Even if the position and bit structure of the card-specific data mark are read using various sensors, it is very difficult to find the ink used for the mark and mark the same condition as the real card.

As a result, it is most effective for the authenticity of one type of credit card, which does not have a user's identification number because there is no encryption number like a normal credit card or a bank card, as well as a telephone card.

In addition, the present invention has a function of reading card-specific data pre-printed on a card at card issuance, forming security data, and writing it to the magnetic recording section. Since a mark printed by a specific printing method is detected by invisible light of a specific wavelength, it is impossible to read card-specific data in the apparatus of the present invention with a card other than this specification. Do. Therefore, the apparatus of the present invention can easily detect the counterfeit card and is very effective in preventing the issue of the counterfeit card in advance.

In addition, at the time of reading a card | card, it has a function which reads card | card specific data previously printed and recorded in the card | card by the said method, and forms security data from the variable data recorded on the magnetic recording part. Therefore, even in this case, it is impossible to read other than the card printed by the predetermined method and the counterfeit card can be easily detected.

In addition, forgery of a card printed with a mark that can be detected by an invisible light of a specific wavelength of the apparatus of the present invention by a method which is intended to be forged, data recorded in the real card (variable data, security data, etc.) Even if a card is written which records the same data, the apparatus of the present invention calculates the security data from the data detected by the invisible light and the variable data read out from the magnetic recording section, and compares the security data with the security data previously written in the magnetic recording section. Since it has a function of checking whether or not a match is made, security data does not match unless card-specific data completely matches, so that counterfeit cards can be easily detected.

In addition, magnetic data (variable data, security data, etc.) of the magnetic recording section of the invalid card (used only in the magnetic recording section and card-specific data is real data) that has already been used is stored in the magnetic recording section of the valid card. The counterfeit method of the present invention can also easily detect the counterfeit cardard by rewriting the recorded magnetic data.

That is, in reading, the security data calculated from the card-specific data detected by invisible light and the variable data recorded in the magnetic recording unit and the security data recorded in the magnetic recording unit do not coincide. Since it has data), the apparatus of the present invention can easily detect a counterfeit card.

Since the conventional magnetic card reader writer only had the reading and writing function of the magnetic data, the above counterfeiting was ineffective at all. In particular, in stored value cards (e.g., telephone cards, etc.), if the magnetic data of the used card is rewritten with the magnetic data of the effective card, this invalid card has the same function as the effective card. It was impossible to detect. The greatest advantage was that the magnetic recording material could easily rewrite the data, but these cards had the greatest defects. The apparatus of the present invention is to provide an apparatus which can take advantage of the magnetic material (rewrite function) as it is, and can also easily recognize the rewrite of magnetic data.

Therefore, the apparatus of the present invention makes it difficult to produce counterfeit cards and greatly contributes to the promotion of the future use of cards.

Claims (3)

The carded surface has an invisible light discriminating recording section separately from the magnetic recording section, and the magnetic recording section has a variable data recording section and a security data recording section. A magnetic recording card comprising a card-specific data recorder in the visible light discrimination recorder. A data recording method of a magnetic recording card having a magnetic recording section and a nonmagnetic recording section on a card surface, wherein variable data is recorded in the magnetic recording section, and card-specific data that can be identified by invisible light in the nonmagnetic recording section. And recording security data from the variable data and the card-specific data according to a predetermined algorithm, and recording the security data in the magnetic recording section. An apparatus for reading and writing data into a magnetic card having a magnetic data recording section and a unique data recording section written in ink that is invisible and invisible invisible light, at least as described in (1) to (4) below. Each card is provided with a recording device for reading a magnetic card. (One). Means for reading and writing data to the magnetic data recording section. (2). Invisible light having a specific wavelength is irradiated to a unique data recording section in which card-specific data is printed on the magnetic card in advance, and the strength and weakness of the invisible light obtained by this card are detected to read the card-specific data. Means to. (3). Computing means for forming security data according to a predetermined algorithm from variable data to be written in said magnetic data recording section or variable data read in said magnetic data recording section and card-specific data read out from said unique data recording section. (4). Means for judging whether or not the security data read out from the magnetic data recording section and the variable data read out from the magnetic data recording section and security data formed on the basis of card-specific data read out from the card's unique data recording section match each other.

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