JP2670552C - - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology for preventing counterfeiting of a magnetic card, and more particularly to a normal magnetic data recording and a magnetic data recording pattern-printed with magnetic ink. It relates <br/> the magnetic recording cards in combination. 2. Description of the Related Art In recent years, so-called magnetic cards for magnetically recording data have been available. There are two types of magnetic cards, one that specifies a user with a personal identification number such as a cash card, and one that does not specify a user, such as a telephone card that has become very popular recently. is there. Here, the former cannot be used as it is even if the card is forged because it has a password, but the latter does not use a password, so there is a high possibility that a counterfeit card by duplication will be available. Therefore, various countermeasures for preventing forgery have been taken. The first is a method using a password, but this method has no effect unless the user is specified. The second is a method in which a special element other than magnetic data is embedded in the card so as not to be seen, and the authenticity is determined by detecting the presence / absence of the special element. The third method is a method of providing a visible record, for example, a special pattern by fine lines, printing of special characters, and a hologram. However, this method is effective for humans, but it is difficult for a machine to identify it. No. 4 is a method of performing writing using a certain algorithm at the time of data writing, but this method is also ineffective for copying magnetic data. Method 5 is a method in which the magnetic recording layer is composed of a plurality of magnetic layers having different properties so that reading is not possible unless a special device is used. . [0004] The present invention has been made in view of the above, and an object thereof is to provide a magnetic recording card that can not be easily forged. [0005] In order to achieve the above object, according to the present invention, a magnetic recording portion is provided on a card surface, and the magnetic recording portion is provided on the card surface.
A pattern printing section made of a separate magnetic ink is provided, and
A portion is provided with a dummy mark printing layer, and the pattern printing portion using the magnetic ink is
Card-specific data is recorded, and the magnetic recording section changes according to the use of the card.
Variable data, and the variable data and the card-specific data.
The present invention provides a magnetic recording card on which security data is recorded . Embodiments of the present invention will be described below with reference to the accompanying drawings. 1A and 1B show the shape of a magnetic card according to the present invention. FIG. 1A shows the front side and FIG.
Indicates the back side. In FIG. 1, reference numeral 1 denotes a magnetic card, which is provided with a magnetic recording section 2 along the longitudinal direction at the upper center on the front side, and a timing mark 3 and card-specific data along the longitudinal direction at the lower center on the back side. Mark 4
The pattern printing recording section made of magnetic ink consisting of: is provided invisibly by the concealing layer 5. In FIG. 1, the pattern printing recording section made of magnetic ink and the magnetic recording section 2 are arranged on the opposite sides of the card, but may be on the same plane. The magnetic recording unit 2 is a magnetic stripe in a general magnetic card, and records variable data such as money and security data to be described later. The pattern print recording unit using magnetic ink includes two types of marks, namely, timing marks 3 and card-specific data marks 4, and these data are recorded by printing using magnetic ink. As the magnetic ink, for example, a synthetic resin such as a butyral resin, a vinyl chloride / vinyl acetate copolymer resin, a urethane resin, a polyester resin, a cellulose resin, an acrylic resin, a styrene / maleic acid polymer resin is used as a binder resin. According to a rubber-based resin such as nitrile rubber, a urethane elastomer is added, and as a magnetic substance, for example, γ-Fe203, Co-containing Fe203, Fe304, barium ferrite, strontium ferrite, Co.Ni.Fe.Cr alone or an alloy, Rare earth Co magnetic, CrO2, MNAl
Etc., appropriately selected from the above, other than the above binder resin, magnetic substance, surfactant,
A silane coupling agent, a plasticizer, a wax, a silicone oil, carbon, or other pigments may be added as necessary, and the mixture may be kneaded with a three-roll, sand mill, ball mill, or the like, and used. As shown in FIG. 2, the concealing layer 5 has a high concealing ink on the timing mark 3 and the card-specific data mark 4 to make the mark invisible, ie, white ink, black ink, and gold ink. It is formed by a general printing method using silver ink or the like. Further, as shown in FIG. 3, a dummy mark printing layer 6 which forms a uniform surface at least partially with the timing mark 3 and the unique data 4 is provided by using an ink of the same color as the magnetic ink. 3, a concealing layer 5 is provided on the mark 4 by using an ink for concealing the layer 6 and the mark 3 and the mark 4, and a picture layer 7 such as a tint block can also be provided on the layer 5. As a result, the mark 4 and the timing mark 3 of the card-specific data made of magnetic ink are not visually recognized, so that the presence of these marks is not clearly recognized. Forgery is most easily performed by duplication, but in this way, due to the pattern printing part of magnetic ink that is concealed invisibly, the card-specific data mark cannot be visually identified, and where and how Is difficult to find out. The mark can be read by detecting with a general magnetic head or a hall sensor. FIGS. 4 (A) and 4 (B) show data writing to the magnetic recording section 2 of the magnetic card 1,
2 conceptually shows a data flow for reading data from the magnetic card 1. As an example, first, when writing to a magnetic card, as shown in FIG. 4, the card-specific data read from the marks 3 and 4 recorded in the mark recording section of the card according to the present invention and the new After the variable data to be recorded in the magnetic recording unit is converted into security data in accordance with a predetermined algorithm, the data is written to the security data recording unit of the magnetic recording unit 2, and the variable data is directly written to the magnetic recording unit 2. As shown in FIG. 4 (B), reading of data from the magnetic card includes variable data of data read from the magnetic recording unit and security data according to a predetermined algorithm together with card-specific data read from the mark recording unit. It is converted into data and collated with the security data read from the magnetic card. Thereby, it is determined whether the read magnetic card is accepted or rejected. FIG. 5 shows a configuration of a magnetic card reader / writer for writing data to the magnetic card and reading data from the magnetic card shown in FIGS. 4 (A) and 4 (B). It is. In FIG. 1, reference numeral 10 denotes a magnetic read / write unit for writing data to the magnetic recording unit 2 of the magnetic card 1 and reading data from the magnetic recording unit 2, and includes a magnetic write head 11, a magnetic read head 12, and a magnetic data write unit. Circuit 13, magnetic data reading circuit
With 14. Reference numeral 20 denotes a card-specific data reading unit, which includes a magnetic writing head 21, a magnetic reading head 22, and a specific data reading circuit 23. Further, reference numeral 30 denotes an MPU unit constituted by, for example, a microprocessor or the like, and reference numeral 40 denotes an external device. When writing to a magnetic card in the magnetic card reader / writer, first, the unique data of the card is read by the unique data reading unit 20. That is, the timing mark 3 and the card-specific data mark 4 printed with magnetic ink are entirely magnetized in a certain direction by the magnetic writing head 21, and then the mark signal is detected by the magnetic reading head 22 via the unique data reading circuit 23. Provided to MPU30. Further, variable data is read from the magnetic recording unit 2 by the magnetic read head 12 of the magnetic read / write unit 10, a signal from an external device such as a telephone is obtained by the MPU unit 30, and variable data to be newly written is created. Then, the MPU unit 30 creates security data from the card-specific data and the variable data read earlier. Then, the variable data to be newly written and the security data are written by the magnetic writing head 11 into the magnetic recording unit 2 of the card.
Write to. When the magnetic card on which data is written in this way is applied to a magnetic card reader / writer for making a telephone call, the card is sent in the scanning direction by a scanning mechanism (not shown), and the magnetic read head 12 of the magnetic read / write unit 10 is moved. Both the variable data and the security data are read by the MPU via the magnetic data circuit 14.
Given to part 30. On the other hand, in the unique data reading device section 20, the timing mark 3 and the card unique data mark 4 printed with magnetic ink are entirely magnetized by the magnetic head 21 and the mark signal is detected by the magnetic reading head 22. Then, the mark signal is provided to the MPU unit 30 via the unique data circuit 23. In the MPU unit 30, the variable data and unique data read from the magnetic card are converted into security data by the MPU unit 30 according to a predetermined algorithm, and the security data read from the magnetic card is also provided to the MPU unit 30. . The MPU unit 30 collates the security data obtained by the conversion with the read security data, and outputs a pass or fail depending on whether or not the two match. If the call is successful, the telephone outputs a signal indicating that use is permitted, obtains a signal corresponding to the telephone usage, subtracts the original variable data from the original variable data, and stores the new variable data in the magnetic recording unit of the magnetic card 1. Write to 2. Writing is as described above. If the test is unsuccessful, an unusable telephone signal is output. [Modification] In the above-described embodiment, the card-specific data is given by the timing mark and the mark corresponding to the timing mark. This is what is called a magnetic barcode or MICR character based on the size of the bar width and the size of the space by the magnetic ink. However, exactly the same effect can be obtained. Printing of card-specific data using these magnetic inks can be easily performed by using a number machine. As described above, the present invention provides a magnetic card in which variable data is recorded in a magnetic recording section, by providing a pattern printing section using magnetic ink, and recording card-specific data in the printing section. Since the security data created from the unique data and the variable data is recorded in the magnetic recording unit, it is possible to provide a magnetic card that is difficult to forge. That is, even if a card is created by duplicating the data recorded in the magnetic recording unit 2 as it is, if the card-specific data is different, the security data does not match and the forged card can be easily detected. As a result, it is most effective against counterfeiting of a kind of voucher card, such as a normal credit card, a bank or a card, as well as a telephone card, which has no personal identification number and whose user cannot be specified. In addition, the present invention makes the security data created from the card-specific data and the variable data also variable data, thereby making it difficult to forge the data in the card, and the card itself carries information for card identification. With this configuration, there is no load on the magnetic card reader / writer side, and there is no need to specify the device to be used, and the device can be used freely.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1A and 1B are a plan view of a front surface and a plan view of a back surface showing a shape of a magnetic card according to the present invention. FIG. 2 is a cross-sectional view showing the structure of a pattern printed material of the card using magnetic ink. FIG. 3 is a cross-sectional view showing the structure of a pattern printed matter of the card using magnetic ink. FIGS. 4A and 4B are conceptual diagrams for explaining various data writing and reading operations for the card. FIG. 5 is a block diagram showing a configuration of a magnetic card reader / writer for performing the operations shown in FIGS. 4 (A) and 4 (B). [Description of Signs] 1 Magnetic card 2 Magnetic recording unit 3 Timing mark 4 Card-specific data mark 5 Concealment layer 6 Dummy mark printing layer 7 of the same color as magnetic ink Picture layer 11, 21 Magnetic writing head 12, 22 Magnetic reading head

Claims (1)

And a magnetic recording portion in All Claims card surface, the magnetic recording unit and a separate magnetic ink pattern printing unit is provided by Rutotomoni dummy mark printed layer is provided on the pattern printing unit, by the magnetic ink The pattern printing unit records card-specific data, and the magnetic recording unit records variable data that changes according to the use of the card, and security data formed from the variable data and the card-specific data. A magnetic recording card.