JP2016221904A - Magnetic printed matter, and method for reading the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic printed matter and a method for reading the same in which forgery can be hardly performed, and authenticity determination having high credibility can be performed.SOLUTION: A base 1 in which a symbol string 11 is printed, is provided. The symbol string 11 includes a first magnetic print part 10 printed on the base 1, and a second magnetic print part 20 printed on the base 1. The first magnetic print part 10 includes a first magnetic material having a Curie temperature (TcA) of a first temperature. The second magnetic print part 20 includes a second magnetic material having a Curie temperature (TcB) of a second temperature higher than the first temperature.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a magnetic printed material and a reading method thereof.

  In general, there are a wide variety of printed products of securities printed with numbers and symbols, for example, securities such as gift certificates, and printed products in the form of cards (such as gift cards). In these securities printed matter, the validity of printed symbols such as numbers and letters is important, and various measures are used to secure the symbols to prevent counterfeiting and authenticity determination (ie authentic and counterfeit). Judgment) has been made. For example, as the above-mentioned measures, there are measures such as using a special material for the substrate of the printed material, using a special material for the symbol system, and shielding the symbol by scratch printing or the like. Further, in Patent Document 1, in order to prevent forgery of the magnetic card, a thermosensitive coloring layer is formed on the magnetic layer, and the coloring temperature of the thermosensitive coloring layer is equal to or lower than the Curie temperature of the magnetic layer (magnetic layer). It is disclosed that the temperature is equal to or higher than the heating temperature (when writing the data).

Japanese Patent No. 3044124

The magnetic card disclosed in Patent Document 1 requires a thermosensitive coloring layer in order to prevent counterfeiting. However, there is a demand for a technique that is effective in preventing forgery without using a thermosensitive coloring layer and that is more difficult to counterfeit compared to the above-described measures and that can perform authenticity determination with higher reliability.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a magnetic printed material that is difficult to forge and that can perform authenticity determination with higher reliability and a reading method thereof.

  A magnetic printed material according to an aspect of the present invention includes a base on which a symbol string is printed, and the symbol string includes a first magnetic printing unit printed on the base and a second magnetic printed on the base. The first magnetic printing unit includes a first magnetic body having a Curie temperature of the first temperature, and the second magnetic printing unit has a Curie temperature of the first temperature. A second magnetic body having a second temperature higher than that of the second magnetic body.

  According to one embodiment of the present invention, it is possible to provide a magnetic printed material that is difficult to forge and that can perform authenticity determination with higher reliability and a reading method thereof.

It is sectional drawing and a top view which show the structural example of the magnetic printed matter 100 which concerns on embodiment of this invention. 3 is a flowchart illustrating a method for determining the authenticity of a magnetic printed material 100. 4 is a conceptual diagram showing magnetic waveform information of each symbol included in the symbol string 11. FIG. It is sectional drawing and a top view which show the structure of 100 A of magnetic printed matter which concerns on the 1st modification of this invention. FIG. 5 is a conceptual diagram showing magnetic waveform information of a symbol “5” composed of both the first magnetic printing unit 10 and the second magnetic printing unit 20. It is sectional drawing and a top view which show the structure of the magnetic printed matter 100B which concerns on the 2nd modification of this invention.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Note that, in each drawing described below, parts having the same configuration are denoted by the same reference numerals, and repeated description thereof is omitted.
<Embodiment>
〔Construction〕
1A and 1B are a cross-sectional view and a plan view showing a configuration example of a magnetic printed matter 100 according to an embodiment of the present invention. The magnetic printed matter 100 is a securities such as a bill, check or gift certificate. As shown in FIGS. 1A and 1B, the magnetic printed matter 100 includes a substrate 1 on which a symbol string 11 is printed. The symbol string 11 includes a first magnetic printing unit 10 printed in the first region 1 a of the base 1 and a second magnetic printing unit 20 printed in the second region 1 b of the base 1. Here, the second region 1b is a region that is on the same surface (for example, the front surface or the back surface) side of the base 1, and is located at a position different from the first region 1a (that is, a position that does not overlap). is there.

  The substrate 1 is a printed part on which the symbol string 11 is printed, and is made of a non-magnetic material such as paper, plastic, or a combination thereof. As an example of the plastic used as the material of the substrate 1, polyethylene terephthalate, polyethylene naphthalate, polyether imide, polyamide, polyimide resin, or the like excellent in heat resistance can be given. The shape of the substrate 1 is arbitrary, and the shape in plan view (hereinafter referred to as a planar shape) may be, for example, a rectangle or a circle. Further, the thickness of the substrate 1 is also arbitrary.

  The symbol string 11 is a string including a plurality of arbitrary symbols such as letters, numbers, or symbols (hereinafter collectively referred to as symbols). Each symbol included in the symbol string 11 is constituted by the first magnetic printing unit 10 or the second magnetic printing unit 20. The number of symbol strings 11 may be one or more than two. Moreover, the direction in which the symbol string 11 is arranged may be one direction (for example, the horizontal direction or the vertical direction in plan view), or two or more directions (for example, the horizontal direction and the vertical direction in plan view). 1A and 1B exemplify a case where the symbol string 11 is a single line and the arrangement direction is a horizontal direction in plan view. The symbol string 11 can be used, for example, as a magnetic symbol printing (MICR) such as a bill, check or gift certificate.

The first magnetic printing unit 10 is a printing unit printed with the first magnetic ink (A), and its shape in plan view is a shape forming at least a part of a symbol. The first magnetic ink (A) and the first magnetic printing unit 10 printed with the first magnetic ink (A) include a first magnetic material whose Curie temperature is the first temperature. Manganese-zinc ferrite (Curie temperature 110 ° C.) is exemplified as the first magnetic body. The second magnetic printing unit 20 is a printing unit printed with the second magnetic ink (B), and is a plan view thereof. The shape according to is a shape forming at least a part of the symbol. The second magnetic ink (B) and the second magnetic printing unit 20 printed with the second magnetic ink (B) include a second magnetic material whose Curie temperature is the second temperature. Here, the second temperature is higher than the first temperature. Examples of the second magnetic body include amorphous (Curie temperature 334 ° C.) or silicon iron (Curie temperature 690 ° C.).

Each symbol (for example, A, B, 1, 2, 3, 4,..., As shown in FIG. 1B) formed of the first magnetic printing unit 10 or the second magnetic printing unit 20 is a base. 1 (for example, when the substrate 1 is white, each symbol is a color other than white) and can be read by its appearance. For example, each of the above symbols can be read visually by the user, or can be automatically read by the imaging device photographing a ticket surface. Further, each symbol described above can be read by reading unique magnetic information (for example, magnetic waveform information depending on the planar shape of the symbol) with a magnetic head.
As described above, each symbol configured by the first magnetic printing unit 10 or the second magnetic printing unit 20 can be read both in appearance and magnetically. The symbol string 11 including these symbols can be used, for example, as a magnetic symbol printing (MICR) such as a bill, check or gift certificate.

[Authenticity judgment method (reading method)]
FIG. 2 is a flowchart showing a method for determining the authenticity of the magnetic printed material 100. Here, a method for determining the authenticity of the magnetic printed matter 100 shown in FIGS. 1A and 1B using a reader / writer device will be described. The reader / writer device can perform, for example, magnetic reading by magnetic symbol printing (MICR) and magnetic rewriting (for example, rewriting so that the magnetic polarity of each symbol is reversed), and A magnetic head with a heat-assisted recording function (hereinafter referred to as a heat-assisted magnetic head) capable of heating the MICR by irradiating the MICR with laser light at the time of magnetic rewriting is provided.

In step S1 of FIG. 2, the magnetic information (for example, magnetic waveform information) of each symbol included in the symbol string 11 is read by the heat-assisted magnetic head. The reading of the magnetic information in step S1 is performed in a normal temperature (that is, room temperature) environment. If the magnetic information can be read normally, the process proceeds to step S2 in FIG.
In step S2, the magnetic information of each symbol included in the symbol string 11 is rewritten with the heat-assisted magnetic head. For example, for each symbol included in the symbol string 11, the polarity is opposite to the magnetic polarity found in step S1 (that is, the S pole is the N pole and the N pole is the S pole). Rewrite magnetic information. Next, the process proceeds to step S3 in FIG.

In step S3, as in step S1, the magnetic information of each symbol included in the symbol string 11 is read by the heat-assisted magnetic head. The reading of magnetic information in step S3 is also performed in a room temperature environment. If the magnetic information can be read normally, the process proceeds to step S4 in FIG.
In step S4, each symbol included in the symbol string 11 is heated to a preset temperature. Here, the preset temperature is a temperature that is higher than the first temperature and lower than the second temperature. That is, the Curie temperature (TcA) of the first magnetic material, which is the main component of the first magnetic ink (A), is set as the first temperature, and the second magnetism, which is the main component of the second magnetic ink (B). When the Curie temperature (TcB) of the body is the second temperature, in step S4, each symbol included in the symbol string 11 is a temperature that is higher than the first temperature and lower than the second temperature. Heat to T (TcA <T <TcB).

  As an example, the first magnetic body that is the main component of the first magnetic ink (A) is manganese-zinc ferrite (Curie temperature 110 ° C.), and the main component of the second magnetic ink (B). When the second magnetic body is amorphous (Curie temperature 334 ° C.), in step S4, each symbol included in the symbol string 11 is higher than TcA (= 110 ° C.) and lower than TcB (= 334 ° C.). Heat to temperature T (110 ° C. <T <334 ° C.). This heating is performed, for example, by irradiating a laser beam from the heat-assisted magnetic head toward each symbol constituted by the first magnetic printing unit 10 or the second magnetic printing unit 20. Next, the process proceeds to step S5 in FIG.

In step S5, similarly to steps S1 and S3, the magnetic information of each symbol included in the symbol string 11 is read by the heat-assisted magnetic head. The reading of magnetic information in step S5 is also performed in a room temperature environment. If the magnetic information can be read normally, the process proceeds to step S6 in FIG.
In step S6, for each symbol included in the symbol string 11, the magnetic information read in step S3 is compared with the magnetic information read in step S5. Then, it is determined whether only a part, not all, of the magnetic information has changed. That is, before and after the heating process in step S4, whether the magnetic information has changed significantly (for example, the magnetism has disappeared or the polarity of the magnetism has become indefinite) in some, not all, of the symbols. Determine whether or not.

  FIG. 3 is a conceptual diagram showing magnetic waveform information of each symbol included in the symbol string 11. FIG. 3A shows the magnetic waveform information read in step S3, and FIG. 3B shows the magnetic waveform information read in step S5. Magnetic waveform information 51 a and 51 b shown in FIGS. 3A and 3B is magnetic waveform information of the symbol “A” formed by the first magnetic printing unit 10. The magnetic waveform information 61 a and 61 b are magnetic waveform information of the symbol “B” formed by the second magnetic printing unit 20. The magnetic waveform information 52 a and 52 b is magnetic waveform information of the symbol “1” formed by the first magnetic printing unit 10. The magnetic waveform information 62 a and 62 b are magnetic waveform information of the symbol “2” made up of the second magnetic printing unit 20. The magnetic waveform information 53 a and 53 b is magnetic waveform information of the symbol “3” formed by the first magnetic printing unit 10. The magnetic waveform information 63 a and 63 b is magnetic waveform information of the symbol “4” formed by the second magnetic printing unit 20.

  For example, when the magnetic printed material 100 used for authenticity determination is an authentic product (that is, a genuine product), the magnetic waveform information of the symbols “A”, “1”, and “3” configured in the first magnetic printing unit 10 is It largely changes before and after the heating step in step S4 (for example, the magnetic output disappears or almost disappears). This is because the first magnetic printing unit 10 lost the magnetic force because the first magnetic printing unit 10 was heated at a temperature higher than the Curie temperature TcA of the first magnetic body in the heating step. In addition, the magnetic waveform information of the symbols “B”, “2”, and “4” configured in the second magnetic printing unit 20 hardly changes before and after the heating process in step S4 and matches each other (for example, magnetic Although the output is reduced by the heating process, it does not disappear, and the number of magnetic waveforms and the position of the apex do not change.)

If it is determined in step S6 in FIG. 2 that the magnetic waveform information has changed significantly for some of the symbols included in the symbol string 11, the process proceeds to step S7 in FIG. In other cases (for example, when it is determined that the magnetic waveform information has not changed significantly for all symbols or the magnetic waveform information has changed significantly for all symbols), the process proceeds to step S8.
In step S7, it is determined that the magnetic printed matter 100 is a genuine product. In step S8, it is determined that the magnetic printed material 100 is a counterfeit product.

[Correspondence]
In this embodiment, step S3 shown in FIG. 2 corresponds to the “first reading process” of the present invention, step S4 corresponds to the “heating process” of the present invention, and step S5 corresponds to the “second reading process” of the present invention. Corresponds to “reading process”. The magnetic waveform information shown in FIG. 3 corresponds to “magnetic information” of the present invention.

[Effect of the embodiment]
The embodiment of the present invention has the following effects.
(1) The symbol string 11 printed on the substrate 1 has a plurality of symbols configured by the first magnetic printing unit 10 or the second magnetic printing unit 20. And the 1st magnetic printing part 10 and the 2nd magnetic printing part 20 contain the magnetic body from which Curie temperature differs mutually. Thereby, there are two types of symbols constituting the symbol string 11 (or three or more types as described in a third modification described later) having different magnetic characteristics. For example, since the configuration of the symbol string 11 used for MICR or the like is complicated, it is possible to make it difficult to forge the magnetic printed matter (that is, to improve the forgery prevention effect).

(2) The first magnetic printing unit 10 includes a first magnetic material having a Curie temperature (TcA) of the first temperature, and the second magnetic printing unit 20 has a second Curie temperature (TcB) of the second temperature. The second magnetic body including the temperature is included, and the second temperature is higher than the first temperature (TcA <TcB). When the authenticity of the magnetic printed matter is determined, the symbol string 11 is heated at a temperature T higher than the first temperature and lower than the second temperature (TcA <T <TcB).

  By this heating, when the magnetic printed material is an authentic product, the magnetism of the first magnetic printing unit 10 disappears and the magnetism of the second magnetic printing unit 20 remains. On the other hand, when the magnetic printed material is a counterfeit product, for example, the magnetism of a portion for which the first magnetic printing unit 10 is forged remains or the magnetism of a portion forged the second magnetic printing unit 20 disappears. Therefore, authenticity determination with higher reliability can be performed.

(3) Moreover, it is preferable that the temperature difference of 1st temperature and 2nd temperature is 50 degreeC or more. Thereby, since the change of the magnetic characteristic of the 1st magnetic printing part 10 with respect to the 2nd magnetic printing part 20 can be made large, the authenticity determination of a magnetic printed matter can be performed easily.

<Modification>
[First Modification]
In the above embodiment, each symbol of the symbol string 11 shown in FIGS. 1A and 1B is configured by one of the first magnetic printing unit 10 and the second magnetic printing unit 20. Explained the case. However, the present invention is not limited to this. In the present invention, the first magnetic printing unit 10 and the second magnetic printing unit 20 may constitute one symbol.

4A and 4B are a cross-sectional view and a plan view showing the configuration of the magnetic printed material 100A according to the first modification of the present invention. The magnetic printed material 100A shown in FIGS. 4 (a) and 4 (b) is also a securities such as a bill, a check or a gift certificate, like the magnetic printed material 100 shown in FIGS. 1 (a) and 1 (b). And a symbol string 11 printed on the substrate 1.
This magnetic printed matter 100A is different from the magnetic printed matter 100 in that at least some of the symbols included in the symbol string 11 are both in the first magnetic printed unit 10 and the second magnetic printed unit 20. It is a point that is configured. For example, the symbol “5” is printed on the substrate 1 as a symbol configured by both the first magnetic printing unit 10 and the second magnetic printing unit 20. As shown in FIGS. 4A and 4B, the symbol “5” indicates that the first magnetic printing unit 10 and the second magnetic printing unit 20 have, for example, tweezers (that is, the tip of tweezers). In addition, the first magnetic printing unit 10 and the second magnetic printing unit 20 are printed in a state in which they are adjacent to each other with no gap in plan view.

  FIGS. 5A and 5B are conceptual diagrams showing magnetic waveform information of the symbol “5” composed of both the first magnetic printing unit 10 and the second magnetic printing unit 20. FIG. 5A shows the magnetic waveform information read in step S3 of FIG. 2, and FIG. 5B shows the magnetic waveform information read in step S5. The magnetic waveform information 54a and 54b is magnetic waveform information of a portion including the first magnetic printing unit 10 in the symbol “5”. The magnetic waveform information 64a and 64b is magnetic waveform information of a portion including the second magnetic printing unit 20 in the symbol “5”.

For example, when the magnetic printed material 100A used for authenticity determination is an authentic product, as shown in FIGS. 5 (a) and 5 (b), the magnetic portion of the portion formed of the first magnetic printing unit 10 in the symbol “5” is shown. The waveform information changes greatly before and after the heating process in step S4, and the magnetic waveform information of the portion consisting of the second magnetic printing unit 20 in the symbol “5” does not change significantly before and after the heating process in step S4.
That is, in this symbol “5”, the portion made of the first magnetic printing unit 10 loses magnetism by heating at the temperature T (TcA <T <TcB), and the portion made of the second magnetic printing unit 20. Even when heated at temperature T, magnetism remains.

  Therefore, also in the first modification, the authenticity of the magnetic printed material 100A can be determined by performing the authenticity determination method described with reference to FIG. Thereby, there exists an effect of an above-described embodiment. Further, in the magnetic printed matter 100 </ b> A, compared to the magnetic printed matter 100, a part of symbols included in the symbol string 11 used for MICR or the like is configured by both the first magnetic printing unit 10 and the second magnetic printing unit 20. In addition, since the configuration of the symbol string 11 is more complicated, it is possible to expect a further effect of preventing forgery.

[Second Modification]
In the above embodiment, the symbol string 11 shown in FIGS. 1A and 1B is a magnetic printing unit including a magnetic material (for example, the first magnetic printing unit 10 and the second magnetic printing unit 20). The case where it is configured has been described. However, the present invention is not limited to this. In the present invention, in addition to the first magnetic printing unit 10 and the second magnetic printing unit 20, the symbol string 11 may be configured by a printing unit that does not include a magnetic material (hereinafter, non-magnetic printing unit). .

  6A and 6B are a cross-sectional view and a plan view showing a configuration of a magnetic printed matter 100B according to a second modification of the present invention. The magnetic printed material 100B is also a securities such as a bill, a check, or a gift certificate, like the magnetic printed material 100 shown in FIGS. 1 (a) and 1 (b). As shown in FIGS. 6A and 6B, this magnetic printed matter 100 </ b> B includes a substrate 1, first and second magnetic printing units 10 and 20 printed on the substrate 1, and the substrate 1. A non-magnetic printing unit 30 printed in a third region 1c (a position different from the first region 1a and the second region 1b in plan view).

  In this magnetic printed matter 100B, a symbol string 11 used for MICR or the like includes symbols (for example, “1” and “3” shown in FIG. 6B) configured only by the first magnetic printing unit 10. , And a symbol (for example, “B”, “2”, “4” shown in FIG. 6B) that includes only the second magnetic printing unit 20. Further, the symbol string 11 includes a symbol (for example, “Z” shown in FIG. 6B) configured by the non-magnetic printing unit 30 as a dummy symbol that does not need to be read magnetically.

  Even with such a configuration, it is possible to determine the authenticity of the magnetic printed material 100B by performing the authenticity determination method described with reference to FIG. 2, and the effects of the above-described embodiment are achieved. Further, in the magnetic printed matter 100B, the symbol string 11 used for MICR or the like includes a non-magnetic dummy symbol that does not need to be read magnetically, as compared with the magnetic printed matter 100. Can be expected to further prevent forgery. For example, if the portion corresponding to the non-magnetic dummy symbol “Z” can be read magnetically, it is understood that the magnetic printed material is a counterfeit product.

[Third Modification]
In the above embodiment, the case where the magnetic printed matter 100 includes the first magnetic printing unit 10 and the second magnetic printing unit 20 has been described. However, the magnetic printed material according to the present invention may include a third magnetic printing unit (not shown) in addition to the first magnetic printing unit 10 and the second magnetic printing unit 20. That is, there may be three or more types of magnetic printing units. For example, the third magnetic printing unit includes a third magnetic body whose Curie temperature is the third temperature. The third temperature is higher than the second temperature. The third magnetic printing unit is formed by printing a symbol on the substrate with a third magnetic ink whose main component is a third magnetic body. Even with such a configuration, the effects of the above-described embodiment can be obtained. In addition, an increase in the number of types of magnetic printing portions can be expected to further prevent forgery.

[Fourth Modification]
In the above embodiment, the case where the second magnetic printing unit 20 includes the second magnetic body has been described. However, in the present invention, the second magnetic printing unit 20 is not limited to the case containing only the second magnetic body. For example, the second magnetic printing unit 20 may include both a first magnetic body and a second magnetic body. In this case, the second magnetic printing unit 20 is formed by printing a symbol on the substrate 1 with magnetic ink containing both the first magnetic body and the second magnetic body. Even with such a configuration, the effects of the above-described embodiment can be obtained.

[Fifth Modification]
In the above-described embodiment, the case where the magnetic printed material 100 is a securities has been described. However, in the present invention, the magnetic printed matter 100 is not limited to securities. For example, the magnetic printed material 100 may be a label attached to a product. Even with such a configuration, the effects of the above-described embodiment can be obtained.

<Appendix>
The present invention is not limited to the embodiment described above and its modifications. Based on the knowledge of those skilled in the art, it is possible to make design changes to the embodiment and its modifications, and any combination of the embodiment and its modifications may be made, and such changes have been made. Embodiments are also included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Base | substrate 1a 1st area | region 1b 2nd area | region 1c 3rd area | region 10 Magnetic printing part 20 Magnetic printing part 30 Nonmagnetic printing part 51a-53a, 61a-63a Magnetic waveform information 51b-53b, 61b (before heating) ~ 63b Magnetic waveform information (after heating) 100, 100A, 100B Magnetic printed matter

Claims (5)

A substrate on which a symbol string is printed;
The symbol string is
A first magnetic printing section printed on the substrate;
A second magnetic printing section printed on the substrate,
The first magnetic printing unit includes a first magnetic body whose Curie temperature is a first temperature,
The second magnetic printing unit includes a second magnetic material having a Curie temperature that is a second temperature higher than the first temperature. A substrate on which a symbol string is printed;
The symbol string is
A first magnetic printing section printed with the first magnetic ink on the substrate;
A second magnetic printing portion printed with the second magnetic ink on the substrate,
The first magnetic ink includes a first magnetic body whose Curie temperature is the first temperature,
The magnetic printed matter, wherein the second magnetic ink includes a second magnetic material having a Curie temperature that is a second temperature higher than the first temperature. The first magnetic printing unit is printed in a first region of the base body,
The said 2nd magnetic printing part is printed on the 2nd area | region which is the said base | substrate and is in a position different from a said 1st area | region by planar view, The Claim 1 or Claim 2 characterized by the above-mentioned. The magnetic printed matter described.   4. The magnetic printed material according to claim 1, wherein a temperature difference between the first temperature and the second temperature is 50 ° C. or more. 5. A method for reading a magnetic printed material according to any one of claims 1 to 4,
A first reading step of reading magnetic information of the symbol string;
A heating step of heating the symbol string at a temperature higher than the first temperature and lower than the second temperature;
And a second reading step of reading the magnetic information of the symbol string after the heating step.

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