JP2009151690A - Data carrier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow a data carrier to normally read data stored on an IC tag and to surely detect whether unauthorized exfoliation has been performed, even after unauthorized exfoliation of the IC tag which is in a state of being attached to an article. <P>SOLUTION: A data carrier including a noncontact data carrier substrate is provided with an IC chip body for carrying data, an antenna coil connected between a first coil connection terminal and a second coil connection terminal among a plurality of connection devices formed on the IC chip body for carrying data, and an exfoliation detection sensor having an easy-to-rupture structure. A side of the noncontact data carrier substrate is coated with an adhesive layer, by which the data carrier adheres to the article and is used, wherein an exfoliation detector for detecting the state variation history of the adhesive layer and detecting whether the adhesive layer once has been exfoliated from the article is further provided on the adhesive layer, and the exfoliation is detected surely, when the data carrier is exfoliated in an unauthorized fashion, by reducing the adhesive power of the adhesive layer. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a data carrier, and more particularly to a technique suitable for use in preventing the data carrier from being used illegally.

  In recent years, contactless data carrier systems have become widespread. Such a non-contact data carrier system is composed of a data carrier (responder) attached to an adherend (for example, a plastic card, an automobile or a logistics product) and a reader / writer device (interrogator). Information is exchanged in a non-contact state between the data carrier and the reader / writer device.

  Fields of use of the non-contact data carrier system include, for example, commuter passes for various transportation facilities, entrance / exit management in various organizations and companies, and logistics management of goods. In such a field, it is desired to check and update data in a non-contact state using a miniaturized data carrier.

  An example of a miniaturized data carrier is a labeled data carrier that is attached to an adherend with an adhesive. Such a labeled data carrier is extremely advantageous in that it can be easily peeled off from the protective release paper and attached to the adherend. However, since it is easy to peel off the state of being attached to the adherend, there is a risk that the data on the data carrier may be tampered with and used illegally.

  Therefore, in order to prevent unauthorized peeling of the non-contact data carrier label, when the non-contact data carrier label is peeled from the adherend, the components of the non-contact data carrier embedded in the non-contact data carrier label are Patent Document 1 proposes a “non-contact data carrier label” that is destroyed by the peeling operation and the function as a data carrier is destroyed at the same time.

  Further, when the sealing member for protecting the internal data is illegally opened and the disassembly of the built-in component is attempted, the internal data is automatically destroyed simultaneously with the opening of the sealing member, For example, Patent Document 2 proposes a data carrier that protects internal data.

  In the technology described in Patent Document 1 or Patent Document 2, when the non-contact data carrier label is illegally peeled off or the non-contact data carrier is disassembled, the antenna (coil) is destroyed, the IC chip And the antenna is destroyed. For this reason, when peeling is performed, the non-contact communication characteristics of the data carrier are deteriorated or damaged.

  For this reason, once peeled off from the adherend, it becomes extremely difficult to normally read out data stored in the IC chip by the reader / writer device, and data such as manufacturing history cannot be understood. was there.

  Further, in the case of the prior art, in the case where the peeling is performed illegally, for example, the structure is designed to impair the characteristics of the antenna, so that the shape of the peeling portion is relatively large. For this reason, if it is attached again after being peeled off, it can be easily attached again as it was and the antenna characteristics may be almost the same as before peeling. For this reason, as a result, there was a problem that the fact that it was illegally peeled off could not be detected.

  In order to eliminate such inconvenience, a peel detection sensor having an easily breakable structure is provided, and when peeling is performed, the peel detection sensor having the easily breakable structure is broken to perform peeling. Patent Document 3 proposed a non-contact data carrier with a rupture detection function that made it possible to detect this.

JP 2000-57292 A JP 2000-124337 A JP 2006-39643 A

  In the non-contact data carrier with a break detection function proposed by Patent Document 3, the peel detection sensor having the easily breakable structure is provided on one surface of the base material of the non-contact data carrier. And the one surface of the said base material is covered with the adhesive material layer, and it affixes it to an article | item with the said adhesive material layer, and uses it. As a result, when the data carrier is peeled from the article, the peel detection sensor having the easily breakable structure is broken, so that it is possible to reliably detect whether or not unauthorized peeling has been performed.

  However, the adhesive layer has a property of being easily dissolved in an alcoholic solvent. For this reason, when an alcoholic solvent is used, the adhesive force of the adhesive layer is reduced, so that the force for breaking the breakage detection sensor is weakened, and whether or not the data carrier is peeled off from the article. There was a problem that it could not be detected reliably.

Moreover, the said adhesive material layer has the property that adhesive force will fall, when it becomes high temperature. For this reason, since the adhesive force decreases when heated, the force for breaking the breakage detection sensor becomes weak, and it is impossible to reliably detect whether the data carrier has been peeled off from the article. There was also a problem.
In view of the above-described problems, the present invention can correctly read data stored in an IC chip even when peeling is performed, and can reliably detect whether or not unauthorized peeling has been performed. The purpose is to do so.

The data carrier of the present invention includes a data carrier IC chip body and a first coil connection terminal and a second coil connection terminal among the plurality of connection elements formed on the data carrier IC chip body. One side of a non-contact data carrier substrate on which a connected antenna coil and a peelable detection sensor with an easily breakable structure are arranged is covered with an adhesive layer, and is used by being attached to an article with the adhesive layer A data carrier for detecting a state change of the adhesive material layer and detecting whether or not the adhesive material layer has been peeled off is provided on the adhesive material layer. And
Another feature of the data carrier of the present invention is that the peeling detection unit is configured to be printed on the adhesive layer using a printing material that is easily soluble in an alcoholic solvent. The design is characterized in that when the printing material is blotted with respect to the alcoholic solvent, the presence or absence of blotting can be easily determined.
Another feature of the data carrier of the present invention is that the peeling detection unit has a temperature detection label formed of a material whose color changes irreversibly in response to an ambient temperature on the adhesive layer. The temperature detection label is irreversibly discolored when it is heated to a temperature at which the adhesive strength of the adhesive material deteriorates.
Another feature of the data carrier of the present invention is that the peelable detection sensor having an easily breakable structure is formed in a linear or folded line shape so that it does not function as a loop antenna in which a conducting wire is wound in a square shape or a circular shape. It is comprised by these.

  According to the present invention, data stored in an IC chip can be normally read even when peeling is performed after being attached to an article. In addition, the presence or absence of delamination can be reliably detected by detecting whether or not unauthorized delamination has been performed based on the presence or absence of the breakage of the delamination detection sensor having an easily breakable structure and the state change history of the dressing layer. A data carrier can be provided.

(First embodiment)
FIG. 1A is a plan view showing a schematic configuration of a first embodiment of the data carrier of the present invention. FIG. 1B shows a part of the cross section of FIG. Furthermore, FIG.1 (c) is a figure explaining the state which showed the state in which the part of FIG.1 (b) was affixed on the articles | goods.

  FIG. 2 is a schematic circuit configuration diagram for explaining a configuration example of the data carrier rupture detection unit shown in FIG. FIG. 3 is a plan view for explaining a first characteristic portion of the data carrier according to the embodiment. Further, FIG. 4 is a plan view for explaining a second characteristic portion of the data carrier of the present embodiment. FIG. 5 is a diagram illustrating an example of a falsification preventing print pattern which is a first feature of the data carrier of the present embodiment. FIG. 6 is a diagram showing an example of a temperature detection label for preventing falsification, which is the second feature of the present invention.

  1-4, 100 is a non-contact type IC tag (with a break detection function), 110 is an inlet base material (non-contact data carrier base material), 111 is an outer shape of the base material, 120 is a coil (antenna coil) Alternatively, it is also called an antenna circuit, and is connected between a first coil connection terminal and a second coil connection terminal among a plurality of connection elements (not shown)), 125 is a caulking connection part, and 130 is an IC chip (IC chip body for data carrier). 131 is an analog circuit, 132 is an IC tag control circuit, 133 is a nonvolatile memory, 134 is a memory control circuit, 136 is a resistor, 140 is a peeling detection circuit, 141 is a breakable circuit, 142 is a peeling layer, 145 is cut, 146 is a perforation, 150 is an adhesive layer, 160 is a fragile protective layer, 180 is a separate film, 190 is an article, and 200 is a breakage detector.

First, a configuration example of the data carrier of this embodiment will be described with reference to FIG.
As shown in FIG. 1, the data carrier of this embodiment incorporates an IC chip 130 having a memory, and communicates signals with a reader / writer (external circuit) (not shown) via a coil (antenna circuit) 120. And a non-contact type IC tag that receives energy from the reader / writer.

  And in the data carrier of this embodiment, the breakage detection part (200 of FIG. 2) is formed using the peeling detection circuit 140 made of a conductive metal as a breakage detection sensor. The peeling detection circuit 140 is provided with a perforated portion 165 in a conductive metal, and is configured as a portion that is easily broken when the IC tag 100 is peeled off while being attached to the article 190 and used. Has been.

  The peeling detection circuit 140 is provided on one side surface of the inlet base 110 and is covered and covered with the adhesive material layer 150. Then, the entire data carrier is affixed to the article 190 by the adhesive material layer 150 and used in a seal form.

  As shown in FIG. 1 (b), the state before application is such that an easily peelable separate film 180 is disposed on the adhesive layer 150, and when used, the separate film 180 is placed as shown in FIG. 1 (c). The adhesive is peeled off and attached to the article 190 with the adhesive force of the adhesive material layer 150. In the present embodiment, the ease of breaking can be controlled by the wiring width of the peeling detection circuit 140 and the shape of the perforated portion 165.

  As shown in FIG. 2, the break detection unit 200 of the IC tag 100 according to the present embodiment accumulates break information provided in the peeling detection circuit 140 and the IC chip 130 of the non-contact type IC tag 100. The non-volatile memory unit 133 for this purpose and the memory control circuit unit 134 that controls the writing and reading operations to the non-volatile memory unit 133 are used as the components.

  With such a configuration, the voltage generated by the energy supply from the reader / writer functions as the voltage source. Then, the presence or absence of breakage of the peeling detection circuit 140 is grasped by voltage, and the voltage in the case of breakage is used as a write instruction signal to the memory control circuit unit 134 when the write instruction signal is present. Under the control of the memory control circuit unit 134, the rupture information with a rupture is written in the nonvolatile memory unit 133.

  In the circuit configuration shown in FIG. 2, when the write instruction signal operates effectively at the voltage Vdd and the peeling detection circuit 140 is not broken, the resistance value of the circuit is very small. The voltage applied to the input terminal of the write instruction signal is Vss, and writing is not performed. When the breakable circuit 140 is broken, the resistance value of the circuit becomes very large, and the input voltage to the write terminal of the write instruction signal becomes Vdd, and writing is performed.

  In the IC tag 100 of the present embodiment, as shown in FIG. 1C, when the IC tag 100 is peeled off after being affixed to the article 190, only the peeling detection circuit 140 is broken, and as a non-contact type data carrier Circuits and elements for functioning are not destroyed. As a result, the function of the IC tag 100 is maintained normally even when it is peeled off after being attached to the article 190. For this reason, it becomes possible to read the break information with a break by the reader / writer in a non-contact manner, and it can be determined whether or not it is a legitimate IC tag attached to the article.

  Further, as described above, since a unique ID (also referred to as a serial ID) that is a unique ID of the chip is written in the IC chip 130, the IC of the non-contact type IC tag 100 that is pasted on the article 190 in advance. By recording the unique ID of the chip 130, even if a completely different one is attached to the article 190 and the breakage of the peeling detection circuit 140 cannot be confirmed, it is attached to the article 190 in a non-contact manner. By using the confirmation of the unique ID of the IC chip of the IC tag 100 in combination, it can be surely confirmed whether or not the IC tag 100 attached to the article is a legitimate IC tag.

  In the present embodiment, as shown in FIG. 1A, the peeling detection circuit 140 includes a first peeling detection circuit 140a disposed inside the antenna coil 120 and a second peeling detection circuit. The circuit 140b and a third peeling detection circuit 140c provided outside the antenna coil 120 are configured. Then, as shown by a thick line in FIG. 3, the first perforation processing portion 165a is formed for the first peeling detection circuit 140a, and the second peeling detection circuit 140b is second. A perforated portion 165b is formed, and a third perforated portion 165c is formed with respect to the third peeling detection circuit 140c.

  In this manner, the three peel detection circuits 140a to 140c are provided, and the first perforation processing portion 165a to the third perforation processing portion 165c are provided for these, whereby the IC tag 100 is attached to the article 190. When peeled off after being done, the peeling detection circuits 140a to 140c can be reliably broken.

  In the present embodiment, the IC chip 130 is flip-connected to terminal portions connected to both ends of the antenna coil 120 via an insulating material, but the present invention is not limited to this.

  Examples of the material of the inlet base material 110 include PET (polyethylene terephthalate), polypropylene (PP), polyethylene (PE), ABS, styrene, polyimide, glass epoxy, PETG, polycarbonate, paper, PVC, or acrylic. PET (polyethylene terephthalate) or polyimide having strength, heat resistance, and chemical resistance is preferable.

  The thickness of the inlet base 110 is usually 25 μm to 200 μm. Further, as the antenna coil 120, a metal foil made of Cu, Al or the like is etched or metal plated. The thicknesses of the Cu pattern and the Al pattern are preferably 10 to 50 μm and 15 to 50 μm, respectively, from the electrical characteristics.

  As the first peeling detection circuit 140a to the third peeling detection circuit 140c, the same material as that of the antenna coil 120 is used in the present embodiment and is formed together with the formation of the antenna coil 120. If it is easy to fracture | rupture from the process part 165, it will not be limited to this. Further, the IC chip 130 is generally used having a size of 1.0 mm × 0.9 mm square and a thickness of about 150 μm.

  Examples of the adhesive material layer 150 include general acrylic resins, natural and synthetic rubbers, styrene / butadiene copolymers, polyvinyl acetate, vinyl acetate / ethylene copolymers, starch, silicone compounds, glue, casein, and polyvinyl alcohol. , Polyurethane or other resins used alone or in the form of solutions, aqueous solutions, emulsions, or synthetic rubbers such as natural rubber, modified natural rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, ethylene as the adhesive base polymer, ethylene -What uses vinyl acetate copolymer resin, acrylic ester resin, vinyl chloride resin, vinylidene chloride resin, etc. in the form of a solution or an emulsion is mentioned.

  Examples of the fragile protective layer 160 include paper, synthetic paper, and plastic films (PET (polyethylene terephthalate), polypropylene (PP), polyethylene (PE), PVC, and the like).

  The material of the separator film 180 is not particularly limited, but release paper or the like obtained by coating the surface of a paper having a thickness of about 10 to 300 μm with a silicone resin or a fluororesin as a release agent can be suitably used. Examples of the material constituting the peeling detection circuits 140a to 140c include a conductive resin layer in which silver particles or carbon particles are mixed in a resin such as epoxy, but is not limited thereto.

Next, the characteristics of the non-contact type data carrier with a break detection function of the present embodiment configured as described above will be described.
With the above-described configuration, if the IC tag 100 is simply peeled off after being attached to the article 190, the peeling detection circuits 140a to 140c are surely broken. However, the pressure-sensitive adhesive layer 150 that bonds the IC tag 100 to the article 190 has a property of being easily dissolved in an alcoholic solvent.

  For this reason, if the alcoholic solvent is used when the IC tag 100 is attached to the article 190 and used, the IC tag 100 is easily peeled off from the article 190, and the peeling detection circuits 140a to 140c are formed. There is a possibility that it will not break.

  In the IC tag 100 of the present embodiment, in order to prevent such inconvenience, as shown in FIG. 4, the first peeling detection unit 211 and the second peeling detection unit 212 are provided with an adhesive layer. 150 is provided. The first feature of the IC tag 100 of the present embodiment is that the first peel detector 211 is provided, and the second feature is that the second peel detector 212 is provided.

(First feature of IC tag)
The first peeling detection unit 211 prints the peeling detection unit on the adhesive material layer 150 using a printing material that has a property of being easily dissolved in an alcoholic solvent. As the printing material, it is possible to use a material having a property of being easily soluble in a known alcoholic solvent. For example, a mixture of xylene and intermediate alcohol. Examples of the intermediate alcohol include n-butanol, i-butanol, n-pentanol, i-pentanol, and the like, and function as an auxiliary agent that helps dissolution of the resin and the surfactant. The mixing ratio of the two is not limited and can be used in the range of xylene: intermediate alcohol = 1 to 99: 99-1.

  Also, the design of the shape and size of the first peeling detection unit 211 is arbitrary, but when the alcoholic solvent bleeds, it should be designed to easily determine the presence or absence of bleed. Is desirable. FIG. 5 shows an example of printing with a size of horizontal = 15 mm and vertical = 5 mm. By forming such a peeling detection part on the adhesive material layer, the IC tag 100 is used by attaching an alcohol solvent to the IC tag 100 when the IC tag 100 is attached to the article 190 by the adhesive material layer 150. When 100 is peeled off from the article 190, the characters, marks, etc. described in the first peeling detection unit 211 are dissolved in the alcoholic solvent, and the shape of the 100 is broken.

  Thereby, in the case of the IC tag 100 of the present embodiment, when the IC tag 100 is once peeled off from the article 190 using an alcoholic solvent, the IC tag 100 is peeled off even if it is attached again. This can be confirmed reliably later. As a result, it is possible to reliably prevent a risk that the data on the data carrier is tampered with and used illegally.

(Second feature of IC tag)
The pressure-sensitive adhesive layer 150 has a property that the pressure-sensitive adhesive force decreases at a high temperature. For this reason, when the IC tag 100 is attached to the article 190 and used, if the temperature is raised, the IC tag 100 is easily peeled off from the article 190, and the peeling detection circuits 140a to 140c are not broken. There is a possibility that.

In the present embodiment, the second peeling detection unit 212 is provided to prevent such a problem from occurring.
That is, as shown in FIG. 6, a second peeling detection unit 212 whose color changes at a temperature at which the adhesive material layer 150 is sensitive to the ambient temperature and the adhesive force deteriorates is pasted on the adhesive material layer 150.

  Such a second peeling detection unit 212 is configured using temperature-sensitive ink that is used to display whether a temperature history exceeding a predetermined temperature has passed for a certain period of time with a clear and irreversible change in color tone. be able to. Such temperature-sensitive ink includes a granular or powdery hot-melt material having a melting point corresponding to the temperature to be recorded, a granular or powdery diffusible dye dispersed or dissolved in the hot-melted material, And an ink vehicle that diffuses the hot-melted material that is colored with a color masking agent having a color opposite to the color of the pigment. The second peeling detection unit 212 is configured by printing temperature-sensitive ink on a synthetic resin film.

  The color of the diffusible dye and the color of the color hiding agent opposite to each other are complementary to each other, for example, one is red and the other is green, or one is yellow and the other is blue. A color similar to a complementary color may be used. Further, an intermediate color may be used such that one is pink or magenta and the other is light blue. This heat-sensitive ink shows the color of the color hiding agent before being heated, but after being heated at a predetermined temperature for a certain period of time, the color of the color hiding agent is higher than that of the color hiding agent. The opposite color of the diffusible dye will prevail.

  In the temperature-sensitive ink, the color hiding agent is a direct dye, an acid dye, a reactive dye, an architectural dye, a mordant dye, an azoic dye, a sulfur dye, an organic pigment, or an inorganic pigment, and the weight ratio to the dye is 0. It is preferable that the content is 0.01 to 10 times. If the color masking agent is less than 0.01 times, the color is too light, and the color of the color masking agent does not appear in the ink before heating. On the other hand, if it exceeds 10 times, the color is too dark, and the color of the diffusible dye does not appear even after the ink has been heated.

  As the diffusible dye is dispersed or dissolved in a hot-melt material that has been melted by heat and diffuses more, the color becomes intense. Further, the diffusible dye may be one in which the particle surface or powder surface of the dye is wetted by the heat-melting substance that has been made transparent by heat melting and appears transparent, and emits a strong color. Examples of diffusible dyes include direct dyes, acid dyes, basic dyes, dispersible dyes, reactive dyes, oil-soluble dyes, vat dyes, mordant dyes, azoic dyes, sulfur dyes, organic pigments, and inorganic pigments. You may mix and use 2 or more types.

  The heat-meltable substance is a component that determines the temperature at which the color tone of ink changes, and has a melting point corresponding to the temperature to be recorded under normal pressure. It is a substance that changes from powder to liquid. As the hot-melt material, at least one selected from fatty acid derivatives, alcohol derivatives, ether derivatives, aldehyde derivatives, ketone derivatives, amine derivatives, amide derivatives, nitrile derivatives, hydrocarbon derivatives, thiol derivatives, and sulfide derivatives is used.

  Ink vehicles do not dissolve or diffuse particulate or powdered hot-melt substances and diffusible dyes at room temperature, but they can diffuse hot-melt hot-melt substances in which these dyes are dispersed or dissolved. What can be used is used.

  As described above, the second peeling detection unit 212 of the present embodiment makes it easy to understand the change in color tone, and since it takes time to change to the final color tone after exceeding a predetermined temperature, the stage is changed by the color tone change. It can be detected. The color change is as follows.

  In a state before being heated, the second peeling detection unit 212 changes the color of the diffusible dye by the granular or powdered opaque heat-meltable substance, the granular or powdered diffusible dye, and the color masking agent. The ink vehicle colored with the opposite colors is in a mixed state. At this time, only the color of the color masking agent is observed in the second peeling detection unit 212.

  When the second peeling detection unit 212 is heated to a temperature equal to or higher than the melting point of the hot-melt substance, the hot-melt substance is melted by heat, and the diffusible dye is dispersed or dissolved therein and starts to diffuse. Further, the diffused pigment diffuses into the ink vehicle together with the hot-melt material. At the beginning of the diffusion of the dye, the color emitted by the diffusing dye is erased by the color of the color hiding agent that is opposite to the color. Therefore, the color concealment color is increased as compared with the color of the diffusing pigment, and the color of the color concealing agent is observed by the second peeling detection unit 212. The dye is further dispersed or dissolved and diffuses over time at the heating temperature.

  When a certain time has passed at that temperature, the color emitted by the diffused dye finally becomes superior to the color concealing agent. As a result, the second peeling detection unit 212 stops observing the color concealing agent color. The color of the diffusible dye opposite to that color is observed. A change to a contradictory color is much clearer and more observable than a change in shade of the same color. Therefore, the change in color tone of the second peeling detection unit 212 can be easily and accurately confirmed by visual observation. Depending on the degree of color tone change of the second peeling detection unit 212, it is possible to determine a time history exceeding a predetermined temperature.

  Since the diffusion of the diffusible dye is irreversible, the second peeling detection unit 212 of the present embodiment does not return to the original color tone even if the temperature is lowered and the hot-melt material is solidified after the color tone is changed. When the weight ratio of the color masking agent to the diffusible dye is increased, the time required for the color change of the second peeling detection unit 212 becomes longer.

  In the IC tag 100 of the above-described embodiment, the break detection unit 200 includes a non-volatile memory unit 133 for accumulating break information provided in the IC chip inside 130 of the peeling detection circuit 140 and the non-contact data carrier, The memory control circuit unit 134 that controls the writing and reading operations to the nonvolatile memory unit 133 is a component thereof, and a voltage generated by energy supply from a reader / writer (not shown) is used as its voltage source. The presence or absence of breakage of the peeling detection circuit 140 is grasped by voltage.

  Then, the voltage in the presence of breakage is used as a write instruction signal to the memory control circuit unit 134, and in the presence of the write instruction signal, the nonvolatile memory unit 133 is controlled under the control of the memory control circuit unit 134. The break information with break is written, but the configuration is not limited to this. For example, the voltage in the presence of a break may be grasped by another circuit and written to the nonvolatile memory. In some cases, a signal with breakage may be obtained from the voltage in the state with breakage without writing to the memory.

  As described above, in the case of the IC tag 100 of the present embodiment, when the peeling detection circuits 140 a to 140 c are added and the IC tag 100 is attached to the article 190 and used, the IC tag 100 peels from the article 190. Then, the resistance values of the peeling detection circuits 140a to 140c are changed. Since the peeling detection circuits 140a to 140c are added so as not to affect the original function of the data carrier 100, even if the IC tag 100 is peeled from the article 190 and the peeling detection circuits 140a to 140c are destroyed. The data carrier 100 can be used normally.

  Further, since the perforation processing portion 165 is formed, the breakage of the peeling detection circuits 140a to 140c occurs at a plurality of locations. Therefore, when the IC tag 100 is peeled off from the article 190, it is attached again to the article 190. However, it is almost impossible to restore the peel-off detection circuits 140a to 140c that have been broken at a plurality of locations to the original resistance values. Thereby, when the IC tag 100 is peeled off from the article 190 and the data is falsified, it is possible to reliably prevent the inconvenience that the IC tag 100 continues to be used without noticing the falsification of the data.

  In the present embodiment, since the first peel detection mark 211 and the second peel detection mark 212 are formed on the adhesive layer 150, an alcohol solvent is used or the adhesive layer 150 is heated. If the adhesive strength of the adhesive material layer 150 is reduced, it can be reliably detected later, so it is possible to reliably prevent the inconvenience of continuing to use the data without noticing the alteration of the data. can do.

(Third feature of IC tag)
When the conductor constituting the peeling detection circuit 140 is provided on one side surface of the inlet base 110 in a loop shape that draws a large circle, the peeling detection circuit 140 is connected to the antenna by transmitting magnetic flux through the loop. There is a possibility that an unintended induced voltage is mixed in the peeling detection circuit 140 as noise. When such a phenomenon occurs, there arises a disadvantage that the operation as the peeling detection sensor is hindered.

  In the present embodiment, as described above, the first peeling detection circuit 140a and the second peeling detection circuit 140b disposed inside the antenna coil 120 are formed linearly. Further, the third peeling detection circuit 140c provided outside the antenna coil 120 is folded at a predetermined location around the antenna coil 120 (on the left side of the antenna coil 120 in the example of FIG. 3) to form a loop shape. It is formed not to become.

  By configuring as described above, in the present embodiment, the third peeling detection circuit 140c can be configured not to function as a square or circular loop antenna. As a result, it is possible to avoid the inconvenience that the third peeling detection circuit 140c serves as an antenna, and an unintended induced voltage is generated and mixed into the signal line as noise.

(Other embodiments)
In the above-described embodiment, the example in which one resistive element is disposed as the peeling detection circuits 140a to 140c has been described. However, the change in the characteristics of the electrical element may be detected not only by the change in resistance value but also by the change in current or the change in voltage.

1A is a plan view illustrating an example of a data carrier according to the embodiment, FIG. 2B is a diagram illustrating a part of a cross section of the data carrier illustrated in FIG. FIG. 4 is a view showing a state where a portion (b) is affixed to an article. It is a schematic circuit block diagram for demonstrating embodiment of this invention and demonstrating the fracture | rupture detection part provided in the data carrier. It is a figure explaining an example of the perforation process part formed in the circuit for peeling detection. It is a top view explaining the state which provided the 1st peeling detection part and the 2nd peeling detection part on the adhesive material layer. It is a figure explaining the structural example of a 1st peeling detection part. It is a figure explaining the structural example of a 2nd peeling detection part.

Explanation of symbols

10 IC Tag Inlet Layer 100 IC Tag 110 Inlet Base Material 120 Antenna Coil 130 IC Chip 140 Peeling Detection Circuit 140a First Peeling Detection Circuit 140b Second Peeling Detection Circuit 140c Third Peeling Detection Circuit 150 Adhesive Material Layer 160 Fragile protective layer 165 Perforation processing part 180 Separate film 190 Article 211 First peeling detection part 212 Second peeling detection part

Claims (4)

A data carrier IC chip body, and an antenna coil connected between a first coil connection terminal and a second coil connection terminal among a plurality of connection elements formed on the data carrier IC chip body; A data carrier that is coated with an adhesive material layer on one side surface of a non-contact data carrier substrate provided with a peelable detection sensor having an easily breakable structure, and is used by being attached to an article with the adhesive material layer,
A data carrier, comprising: a peeling detection unit that detects a state change history of the pressure-sensitive adhesive layer and detects whether or not the pressure-sensitive adhesive layer has been peeled from the article.   The peeling detection unit is configured by printing on the adhesive layer using a printing material that is easily soluble in an alcoholic solvent, and the printing design causes the printing material to bleed into the alcoholic solvent. The data carrier according to claim 1, wherein the data carrier has a design that can easily determine the presence or absence of bleeding.   The peeling detection unit is configured by sticking a temperature detection label made of a material whose color changes irreversibly in response to an ambient temperature on the adhesive material layer, and a temperature at which the adhesive strength of the adhesive material deteriorates. The data carrier according to claim 1, wherein the color of the temperature detection label is irreversibly discolored when heated.   The peelable detection sensor having the easily breakable structure is formed in a linear or folded line shape, and is configured not to function as a loop antenna in which a conducting wire is wound in a square shape or a circular shape. The data carrier according to any one of the above.

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