JP2008276799A - Optical diffraction ic tag label - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical diffraction IC tag label capable of constructing an advanced product information management system by forming a non-contact IC tag and an optical diffraction structure on the same base material to attain a plurality of information recording. <P>SOLUTION: The optical diffraction IC tag label 1 is characterized in that the non-contact IC tag 3 comprising an antenna 32 and an IC chip 31, and the optical diffraction structure 2 capable of recording information by laser beams, are formed on a base material sheet and that a viscous layer is formed on the other side surface of an optical diffraction structure forming surface. The optical diffraction IC tag label is usable as the product information management system and constituted by recording information on a store dealing with products, in the non-contact IC tag 3 and optical diffraction structure 2 of the optical diffraction IC tag label 1 attached to the product in the same way in a distribution process of the product. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

An object of the present invention is to improve authenticity in distribution management of high-end brand products and the like. Specifically, the present invention relates to a label provided with a light diffraction structure such as a hologram that can be drawn on a non-contact IC tag, a product information management system using the label, and the like.
Therefore, the application field of the present invention relates to the import and export luxury brand products such as bags, bags, watches, etc., home appliances, pharmaceuticals, cosmetics and other genuine product authentication and protection, copyright protection of music, video, game software, etc. .

Conventionally, an article is given an optical diffractive structure to make an authentic judgment, and prior arts close to the present invention are listed as follows.
Claim 4 of Patent Document 1 describes that a hologram layer is provided on a non-contact IC tag, and aims to prevent forgery of the non-contact IC tag. However, it is difficult to completely counterfeit the hologram itself, but it is possible to manufacture a counterfeit product that looks similar.
Then, when such a counterfeit product is attached, it is difficult to reliably and promptly judge the authenticity. Further, since data recorded only on the IC tag cannot be visually checked, there is a problem that information cannot be confirmed without a reading device.

Patent Document 2 and Patent Document 3 describe a method for manufacturing an article having a light diffraction structure and a card with a hologram. These documents relate to a technology for recording information by irradiating an article having a light diffraction structure and a light reflection layer with laser light to destroy the light reflection layer. As in the present application, these documents are integrated with a non-contact IC tag. It is not related to the light diffractive structure.
Therefore, it is possible to produce a similar product having only the light diffraction structure in this way. If there is a commercially available laser marker, individual information such as letters and numbers can be recorded on the similar product, and it is easily altered. There's a problem.
In addition, the information of the non-contact IC tag is displayed on the rewrite recording layer or the thermal recording layer. However, the rewrite or thermal method has a problem that the display information is easily falsified.

JP 2001-13874 A JP 2000-47555 A Japanese Examined Patent Publication No. 6-85102

In Patent Document 4, individual product information assigned to a product is distributed in the form of a hologram with a hologram information recording medium paired with the product, and the individual product information recorded on the hologram is read and read at the distribution base. It describes that product management is performed by data collation with a management server based on the product information.
However, the data recorded on the hologram is the one at the time of shipment from the manufacturing factory, and the recorded display at each distribution base after that is not made into a hologram, and the product must pass through a regular store and distribution channel in appearance. Cannot be confirmed. Further, since it is not integrated with a non-contact IC tag, there is a problem that a large amount of information cannot be recorded. In addition, there is a problem that information cannot be rewritten or added.

Patent Document 5 describes that merchandise management is performed by giving a hologram recording a plurality of information to an article, reproducing and reading the information for each distribution base → checking with a management database → writing new information. Has been.
However, information on holograms cannot be rewritten. There is a problem that there is a limit to the amount of information that can be added.
The information recorded in the hologram is a combination of random dot destruction, and there are problems that the accuracy of display information and information cannot be grasped visually, reading accuracy is low, and the like. Since the reading device reads a diffraction reproduction image of random dots of a hologram through an image sensor, and the writing device also requires high accuracy for laser drawing, there is a problem that the device becomes very expensive.

In addition, Patent Document 6 also discloses that an RFID tag (non-contact IC tag) has a light diffraction structure layer, which is well known, but the technology is intended only for improving the design of the RFID tag. It has nothing to do with records.

JP 2001-180813 A JP 2002-245420 A JP 2002-366915 A

As described above, prior art optical diffraction structures, hologram labels, etc. are used as authentication media alone, or fixed information is recorded and used as authentication media. There is a problem that the credibility of recorded information cannot be confirmed from a plurality of information sources because it is easy and is a single piece of information.
In addition, there is a prior art in which a hologram is provided on a non-contact IC tag label as in Patent Document 1, but information recording on the hologram surface is not taken into consideration, so that the hologram merely has a role of enhancing decorative effects and forgery difficulty It only worked as a device.

Therefore, in the present invention, the non-contact IC tag and the light diffractive structure are integrally formed on the same base sheet, and by allowing information recording on the light diffractive structure as well as the non-contact IC tag, The present invention has been completed with the idea that the reliability of information can be further improved by giving information by a plurality of recording methods to one label.

The first of the gist of the present invention for solving the above problems is that a base sheet is formed with a non-contact IC tag comprising an antenna and an IC chip, and an optical diffraction structure capable of recording information by laser light, The optical diffraction IC tag label is characterized in that an adhesive layer is formed on the other side surface of the optical diffraction structure forming surface.

A second aspect of the present invention for solving the above problems is that a base sheet is formed with a non-contact IC tag including an antenna and an IC chip, and an optical diffraction structure capable of recording information by laser light, In an optical diffraction IC tag label in which an adhesive layer is formed on the other side of the optical diffraction structure forming surface, the memory of the IC chip and the optical diffraction structure capable of recording information are associated with each other so as to correspond to each other. The information is recorded on an optical diffraction IC tag label.

As described above in detail, according to the present invention, the following effects can be obtained.
(1) Since the optical diffraction IC tag label of the present invention has an optical diffraction structure capable of writing laser light and a non-contact IC tag capable of electrical writing, the optical diffraction structure using a laser light drawing machine. By recording and recording individual information and recording the information on a non-contact IC tag, the optical diffraction structure capable of optical recording can have a data carrier function.
(2) By associating the information displayed on the light diffraction structure with the laser beam drawing machine so as to correspond to the information recorded on the non-contact IC tag, the information on the non-contact IC tag that cannot be seen with the eye can be obtained. It can be displayed and the reliability as a data carrier can be improved.
In this case, if the association between the two data is encrypted, it is possible to make it more difficult to falsify the information.
(3) Compared to the conventional hologram single label, it has a function as a non-contact IC tag, so even if it is peeled off from the product and used for other purposes, the history of the non-contact IC tag can be confirmed. It is easy to clarify that the product is not genuine.

Since the present invention relates to an optical diffraction IC tag label used in a product information management system, first, each will be outlined.
1A and 1B are diagrams showing an optical diffraction IC tag label according to the present invention, in which FIG. 1A is a plan view and FIG. 1B is a cross-sectional view taken along the line AA of FIG.
FIG. 2 is a diagram for explaining a product information management system using the optical diffraction IC tag label of the present invention.

As shown in FIG. 1A, the optical diffraction IC tag label 1 of the present invention has an optical diffraction structure 2 formed on the surface side surface of the base sheet 1b, and an IC chip 31 and an antenna 32 on the other side surface. A non-contact IC tag 3 and an adhesive layer are formed.
The optical diffraction IC tag label 1 may have any surface, but since the optical diffraction structure 2 on which information is recorded is attached so as to touch the human eye, the side surface of the optical diffraction structure 2 is the surface. Therefore, the non-contact IC tag 3 exists on the back side surface of the base sheet 1b and is attached to a product or a product on the surface.

In FIG. 1A, the light diffraction structure 2 is provided on a part of the base sheet 1b, but may be formed so as to cover the entire surface.
As will be described in detail later, the optical diffraction structure 2 has an emboss formation layer and a metal reflection layer made of fine irregularities such as holograms and diffraction gratings on the surface. This has the effect of diffracting or reflecting the received light. Further, the light diffraction structure 2 can destroy a part of the light reflection layer by laser light irradiation and record and display unique information.

As shown in the cross-sectional view of FIG. 1B, a protective sheet 3b that protects the IC tag is provided on the non-contact IC tag 3 side via the adhesive layer 4, and the adhesive layer is interposed via the protective sheet. 5 and separate paper 6 are provided. The separate paper 6 is peeled off and attached to a product or a product by the pressure-sensitive adhesive layer 5.

The non-contact IC tag 3 is a data carrier that communicates with an external reader / writer in a non-contact manner, and the IC chip 31 generally has a control unit and a memory.
The antenna 32 receives radio waves from the external reader / writer and transmits data of the non-contact IC tag 3 in response thereto. As the antenna 32, a patch type antenna separated into two pieces in addition to the coil type as shown in the figure can be adopted. In general, an antenna coil can increase the communication distance.

The non-contact IC tag 3 of the optical diffraction IC tag label 1 has a configuration in which an IC chip 31 is attached to an antenna coil 32 as shown in FIG.
A resonant circuit is formed by the antenna coil 32 and the IC chip 31 or the stray capacitance of the circuit, so that a radio wave of a specific frequency can be received and oscillated. The communication frequency is 13.56 MHz (based on ISO15693), 125 kHz (medium wave), 2.45 GHz (microwave), and the like.

The non-contact IC tag 3 can be manufactured by forming a resist pattern in the shape of an antenna coil on a material obtained by laminating a base sheet 1b and aluminum foil, and etching the aluminum foil, but printing the antenna with conductive ink It is also possible to wire the thin wires in a winding shape.
In order to mount the IC chip 31, one end side of the antenna coil is conducted through the back surface of the base sheet 1 b, or the IC chip mounting portion is made very thin so that both ends of the coil are brought close to each other and the coil becomes narrow A method of mounting the IC chip 31 across the portion is performed. The pads of the IC chip 31 are attached to both ends of the antenna coil using a conductive adhesive or the like.

Next, a product information management system using the optical diffraction IC tag label of the present invention will be described.
The product information management system 10 using the optical diffraction IC tag label of the present invention shares and manages product information between the manufacturer 11 and the wholesale store 12, the retail store 13, and the consumer 14, as shown in FIG. System. Further, the product information management system 10 has a product management database 15 that is shared or commonly used by the manufacturer 11, the wholesale store 12, and the retail store 13, and can be accessed from time to time.
As is well known, since the IC chip 31 of the contactless IC tag 3 has a unique ID that does not overlap each other, basically, the unique ID is specified as a key code and data is stored in the management database 15. For example, the reader / writer does not erroneously search, but the IC chip of each optical diffraction IC tag label 1 may be managed by having a unique identification code separately from the unique ID.

In the product information management system 10, the optical diffraction IC tag label 1 attached to the product is commonly used. Therefore, the manufacturer 11, the wholesale store 12, and the retail store 13, the non-contact IC tag reader / writer 11 a, 12 a, 13 a that writes to or reads from the optical diffraction IC tag label 1, the laser beam drawing machines 11 b, 12 b, 13 b, and the management database 15. Owns terminals 11c, 12c, and 13c for accessing the network.
The consumer 14 may have a non-contact IC tag reader / writer 14a and a terminal 14c.

When the optical diffraction IC tag label 1 is read, data is collated by communication with the product management database 15, and new data is accumulated by communication with the product management database 15 at the time of writing.
When collecting the optical diffraction IC tag label 1 from the consumer 14 at the store, the encryption code is printed on the product itself or the product packaging, and the consumer 14 accesses the manufacturer HP (homepage) 9 on the Internet and encrypts it. The contents may be confirmed.

Next, the configuration of the light diffraction structure 2 in the light diffraction IC tag label 1 of the present invention will be described.
3 is a cross-sectional view of the light diffractive structure, FIG. 4 is a plan view after readable laser beam drawing individual information is recorded on the light diffractive structure, and FIG. 5 is a cross-sectional view thereof.

If the general structure of the optical diffraction structure 2 is illustrated in detail, it will become the cross-sectional structure of FIG.
The light diffraction structure 2 is formed on a base film 2b different from the non-contact IC tag, and is adhered to the base sheet 1b of the non-contact IC tag 3 by the lowermost pressure-sensitive adhesive layer 2n.
On the base film 2b, an emboss formation layer 2e, a metal reflection layer 2r, and an adhesive layer 2n are formed via a release layer 2s. The base film 2b may be peeled off after being attached to the product. Therefore, in that case, in a state where the optical diffraction IC tag label 1 is attached to the product, the optical diffraction structure 2 is formed between the adhesive layer 2n and the release layer 2s or less.

The embossing layer 2e is a recording of the interference fringe wavefront of the hologram and the optical diffraction grating. The embossing layer 2e is reproduced in an embossed manner on the thermosetting or thermoplastic resin material surface from the duplication template that duplicates these recording masters. Are expressed as an embossing layer 2e.
Normally, an interference fringe pitch and a diffraction grating which are about 1/4 to 2 times the wavelength of light are recorded on the embossing formation layer 2e, but the corrugated height of the waveform is generally smaller than that. The emboss formation layer 2e is formed to a thickness of about 0.1 to 6 μm.
By this emboss formation layer 2e, a hologram image and a diffracted light pattern of light are generated.

The light diffraction structure 2 used in the present invention has a metal reflective layer 2r provided by vapor deposition or sputtering of a reflective metal material on the side surface of the pressure-sensitive adhesive layer 2n of the emboss formation layer 2e. The metal reflection layer 2r is characterized in that the hologram image and the diffraction grating pattern are brighter and clearer and information recording is possible by laser light.
As will be described later, there are various materials for the metal reflection layer 2r. However, aluminum is considered to be optimal as a material that can be easily deposited and does not require high energy for recording. However, nickel, tin, indium, etc. can be expected to be practical.
It is sufficient that the thickness of the metal reflection layer 2r is 5 nm to 1 μm.

The release layer 2s is a layer for easily peeling the embossing layer 2e from the base film 2b, and is not provided in the case of inherently easy peeling due to the relationship between the film to be selected and the embossing layer resin material. May be. Usually, as will be described later, a material that does not strongly adhere to the base film 2b is selected.

The above is a general layer structure of the light diffraction structure 2, but in addition to the above, (1) adhesive label form, (2) brittle label form, (3) transfer foil form, (4) laminate film form, and You can also The layer configuration will be briefly described below.
(1) Adhesive label The layer structure in this case is: support sheet / hologram layer / light reflection layer / adhesive layer, but an intermediate layer may be inserted between the support sheet / hologram layer.
(2) Brittle label In this case, the layer structure is: support sheet / peeling layer / hologram layer / light reflecting layer / adhesive layer, but if necessary, an intermediate layer and a light reflecting layer between the peeling layer / hologram layer / Anchor layer may be placed between the adhesive layers.
In the case of a brittle label, a strong and weak pattern is provided between the peeling layer / hologram layer to prevent uniform peeling, or the anchor layer between the light reflecting layer / adhesive layer is made into a fine pattern and peeled to form a brittle layer structure. In some cases, the light reflecting layer is irregularly split.

(3) Transfer foil The layer structure in this case is: support sheet / peeling layer / hologram layer / light reflecting layer / adhesive (heat seal) layer, but if necessary, an intermediate layer between the peeling layer / hologram layer An anchor layer may be placed between the light reflecting layer / adhesive layer. There may be no release layer.
(4) Laminate film The layer structure in this case is a support sheet / hologram layer / light reflecting layer / adhesive (heat seal) layer, but if necessary, an intermediate layer, light between the support sheet / hologram layer An anchor layer may be placed between the reflective layer / adhesive layer.
In each of the above cases, the hologram layer may be expressed as an emboss formation layer.

After readable information is recorded in the light diffraction structure 2, the result is as shown in FIG. 4 or FIG. Along with the hologram image or the light diffraction pattern 7, laser light drawing information 8 is displayed so as to be visible with the naked eye.
The display is a character, number, symbol, figure, etc. that can be recognized at a glance. However, it is not limited to those that directly recall the manufacturer or wholesale store, such as letters and numbers. May be displayed. However, information that cannot be recognized without machine reading, such as bit codes, is excluded.
The cross section of the light diffraction structure 2 after information recording is as shown in FIG. This figure shows that the laser beam drawing information 8 is recorded on the metal reflection layer 2r.

Information recording of the metal reflective layer 2r is performed using a laser beam drawing machine. The drawing machine irradiates a laser beam such as a YAG laser or carbon dioxide (CO2) and melts the metal reflection layer to display the information.
Laser beam drawing can be performed through the base film 2b or the release layer of the light diffraction structure 2. In the case of a YAG laser having a wavelength of 1.06 μm, melt printing can be instantaneously performed with a laser output of 20 W or more. Considering the laser oscillator cost and the like, a laser output of about 50 W is preferable.
On the other hand, in the case of a carbon dioxide laser (wavelength 10.6 μm), it is possible to instantaneously perform melt printing with a laser output of 2 W or more.

The laser light may be either continuous light or pulsed light. A continuous laser beam is a light that always maintains the same output for a certain time, whereas a pulsed light is a light that has a high output only for a very short time.
For pulsed laser light, a method of controlling the output of continuous light with an external modulator or a method of inserting a Q switch into a laser resonator and instantaneously outputting energy accumulated in the laser medium by switching the Q switch There is.
Specific examples of the former laser include an argon laser, a helium-neon laser, a YAG laser, and a semiconductor laser. A mechanical shutter, an A / O modulation element, an E / O modulation element, or the like as an external modulator is used as a Q switch. By inserting and controlling the Q value of the resonator, it is possible to generate pulsed light having a time width of several tens of nanoseconds to several hundred nanoseconds.

<Embodiments related to other materials>
(1) Heat resistance and solvent resistance when sequentially forming each layer to be laminated on the base film and base sheet by coating, etc., and when transferring the formed optical diffraction IC tag label to the base material of articles such as products and cards When using the thermal transfer method, the heat resistance is required.
As a plastic film having these properties, for example, a biaxially stretched polyethylene terephthalate film (hereinafter referred to as “PET film”) can be preferably used.
In the case of using a PET film, the thickness of the base film 2b is preferably 5 to 250 μm, and more preferably 10 to 50 μm in consideration of workability, tensile strength, and thermal efficiency at the time of thermal transfer.
In the case of the base sheet 1b of a non-contact IC tag, a sheet having a thickness of 50 μm to 250 μm is preferable in view of forming an antenna coil.

(2) Release layer The release layer 2s of the light diffraction structure 2 includes acrylic skeleton resin, vinyl chloride-vinyl acetate copolymer resin, cellulose acetate and thermosetting acrylic resin, melamine resin, nitrocellulose resin, and It is formed from a mixture with polyethylene wax or the like, and it is particularly preferable to use an acrylic skeleton resin as a main component.
Alternatively, a polyester resin or the like is preferably used in order to adjust the adhesion between the release layer and the base film 2b. On the contrary, in order to improve the peelability, a wax or a silicon resin is added.
The release layer is prepared by dissolving or dispersing the above resin in an appropriate solvent to prepare a release layer coating solution, and applying this onto the base film by means such as gravure printing, screen printing or reverse coating. Can be formed by drying.
The release layer has a thickness of about 0.1 to 10 μm.

(3) A resin material capable of reproducing a fine pattern of an embossed layer hologram or an optical diffraction grating is used.
Generally, thermoplastic resins such as polyvinyl chloride resin, acrylic resin, polystyrene, polycarbonate, etc., unsaturated polyester resins, melamine, epoxy, acrylate, etc. are used alone or in combination with the above thermoplastic resins. A thermoformable substance having a radically polymerizable unsaturated group, or a radically polymerizable unsaturated monomer added to these to make ionizing radiation curable, etc. Can be used.
The film thickness of such an emboss forming layer is preferably in the range of 0.1 to 6 μm, and more preferably in the range of 1 to 4 μm.

(4) Metal Reflective Layer Material Metal materials that totally reflect light are aluminum (Al), zinc (Zn), indium (In), gold (Au), silver (Ag), cobalt (Co), and tin (Sn). , Selenium (Se), Titanium (Ti), Tellurium (Te), Iron (Fe), Copper (Cu), Lead (Pb), Nickel (Ni), Palladium (Pd), etc. Can do.
Although the thickness of a metal thin film can be adjusted according to a color tone, a design, a use, etc., generally the range of 5 nm-1 micrometer is preferable, More preferably, it is the range of 10 nm-100 nm. When it is desired to provide a colored light reflecting layer having transparency, the film thickness is preferably 20 nm or less. Moreover, when it is desired to provide a colored light reflecting layer having a concealing property, it is desirable that the film thickness be 20 nm or more.
As described above, the thin film can be set according to needs such as color tone, concealment property or transparency in consideration of the use of the transfer foil and the total design.

(5) Adhesive layer As the adhesive used for the adhesive layer 5 and the adhesive layer 2n, an acrylic resin, an acrylate resin, or a copolymer thereof, a styrene-butadiene copolymer resin, natural rubber, casein, Gelatin, rosin ester, terpene resin, phenol resin, styrene resin, chroman indene resin, polyvinyl ether resin, silicone resin, or alpha cyanoacrylate, silicone, maleimide, styrene, polyolefin, resorcinol, polyvinyl An ether-based pressure-sensitive adhesive can be used.

In addition, a heat sealant may be used as the adhesive, such as ethylene-vinyl acetate copolymer resin, polyamide resin, polyester resin, polyethylene resin, ethylene-isobutyl acrylate copolymer resin, butyral resin, polyvinyl acetate and The copolymer resin, cellulose derivative, polymethyl methacrylate resin, polyvinyl ether resin, polyurethane resin, polycarbonate resin, polypropylene resin, epoxy resin, phenol resin, styrene-butadiene-styrene (SBS) copolymer resin, styrene-isoprene-styrene (SIS) Various thermoplastic elastomers such as copolymer resins, or reactive hot melt resins.
The thickness of the pressure-sensitive adhesive layer is preferably 3 μm to 30 μm.

Next, a method for using the product information management system using the optical diffraction IC tag label of the present invention will be described.
FIG. 6 is a diagram illustrating a state where an optical diffraction IC tag label is attached to a product, and FIG. 7 is a diagram illustrating a distribution channel of the product.
Since the product information management system 10 has various utilization methods, it will be described with reference to FIG. 2 again.

The first method of use is mainly intended for use between the manufacturer 11 of the product, the wholesale store 12, and the retail store 13. In this mode of use, the manufacturer 11 ships with the optical diffraction IC tag label 1 attached to the product 20, but at that stage, information about the shipped product is recorded in both the non-contact IC tag 3 and the optical diffraction structure 2. .
Information related to shipped products is information such as manufacturer name, manufacturing lot and date, manufacturing factory and manufacturing location, or the origin and material of raw materials. Necessary information can be arbitrarily selected or added. .

Recording on the non-contact IC tag is performed by the non-contact IC tag reader / writer 11a, and recording on the light diffraction structure is performed using the laser drawing machine 11b as described above.
It is preferable that a part of these recorded data includes contents common to both. For example, when a manufacturer name is recorded on the non-contact IC tag 3, a manufacturer name or a symbol, character, figure, or the like associated with the manufacturer name is also recorded on the optical diffraction structure 2. .
Since the recording capacity of the non-contact IC tag 3 has been increasing in recent years, a considerable amount of information can be recorded, but it is difficult to record a large amount of information on a light diffraction structure having a small area. Since it is not realistic to record long letters or the like on the light diffraction structure, it is preferable to record a corresponding code or the like.

The optical diffraction IC tag label 1 on which information is recorded is attached to the product 20 and shipped as shown in FIG. When the product 20 arrives at the wholesale store 12 or the retail store 13, the store owner or the like reads whether the product 20 is a genuine product by reading the non-contact IC tag 3 or display information on the light diffraction structure 2. Can be visually confirmed with the naked eye.
If the read information of the non-contact IC tag 3 is accurate or the display information of the light diffraction structure 2 corresponds to the manufacturer, the authenticity of the product is confirmed.
Information recording on the optical diffraction IC tag label 1 is performed as shown in FIG. 4, but it is preferable to perform laser light recording from the upper left to the lower right in order to secure additional recording space when the number of distribution bases is increased.

When it is confirmed that the product 20 is a genuine product, the wholesale store 12 or the retail store 13 similarly records information on the handling store on the optical diffraction IC tag label 1.
These will help prove that if your product is later returned or if a problem occurs, it is handled by your store.
When entering the encryption code, the manufacturer has a list of stores of the encryption code, and checks the distribution bases at random. It is also possible to have a store list for each distribution base so that the distributor can check when the product is received or shipped.

There are various forms of product distribution channels as shown in FIG. In some cases, the manufacturer 11 may be directly connected to the retail store 13A via the wholesale store 12A, or may be distributed to the retail store 13B via the wholesale store 12B and the wholesale store 12D. Further, there may be a case where the distributor 12C branches from the wholesale store 12C to the retail stores 13C and 13D.
Thus, since there are a wide variety of distribution routes, it is generally difficult to specify a distribution route when there is no display or recording. Therefore, if handling store information is recorded on the optical diffraction IC tag label 1 as described above, it is useful for investigation of trouble products and speeding up of processing.

Table 1 is a table showing an example of read information and write information of the non-contact IC tag at the manufacturer and each distribution base. This shows a case where the product is distributed through the distribution route shown in FIG.
The manufacturer 11 reads the initial data and records the manufacturer code, the manufacturing number, the shipping date, and the like. In the wholesale stores A, B, C, and D, the information written by the manufacturer 11 is read, and the wholesale store code, the arrival date, the shipping date, and the like are recorded.
In retail store A, the writing information of manufacturer 11 and wholesale store A is read and the sales date is recorded.
The retail store B reads the writing information of the manufacturer 11 and the wholesale stores B and D and records the sales date. Retail store C and retail store D read the write information of manufacturer 11 and wholesale store C, and record the sales date.
However, the above is an example of information recording, and it goes without saying that various recording methods can be adopted as necessary.

Table 2 is a table | surface which shows the example of the display information to the optical diffractive structure in a manufacturer and each distribution base. As described above, it is an example of recording in an encoded or encrypted manner, and it is needless to say that the present invention is not limited to this example.
In Table 2, the base code of the manufacturer 11 is “0”, and the encryption code is “00”. Further, the base codes “1”, “2”, “3”, and “4” are allocated to the wholesale stores A, B, C, and D, respectively, and “? 1”, “% 2”, “& 3”, “#” as the encryption codes. 4 ”is allocated. The same applies to retail stores A, B, C, and D. By encoding in this way, necessary information can be included in a small area of the optical diffraction structure 2. In this case, the code correspondence table is managed as a trade secret between the manufacturer, the wholesale store, and the retail store.

The second usage method is intended to be used mainly between the manufacturer 11 of the product, the wholesale store 12, and the retail store 13 as in the first usage method.
In this mode of use, the manufacturer 11 ships the product with the optical diffraction IC tag label 1 according to claim 1 attached thereto. At that stage, information regarding the product to be shipped is provided for both the non-contact IC tag and the optical diffraction structure. To record. The information related to the shipped product is information such as the manufacturer name, manufacturing lot and date, information about the manufacturing factory and manufacturing location, or the origin and material of the raw material, and is the same as the first method of use.
In the wholesale store 12 and the retail store 13 in the distribution process, writing to the non-contact IC tag is performed, but writing to the light diffraction structure is performed as necessary.

The third usage method is mainly intended to be used between the manufacturer 11 of the product, the wholesale store 12, and the retail store 13 as in the first and second usage methods. However, the use of the product management database 15 is an essential requirement.
In this case, all or a part of the information recorded in the non-contact IC tag is accumulated in the product management database 15 via the terminal 11c, so that the wholesale store 12 or the retail store 13 reads it from the optical diffraction IC tag label. Based on the attribute information, the product content or history can be confirmed by accessing the product management database 15 via a communication line.

In the third usage method, the manufacturer 11 is required to record at least a part of common information regarding the shipped product in the non-contact IC tag 3 and the optical diffraction structure 2 of the optical diffraction IC tag label 1. As a requirement. At least a part of the common information may be product information having the same content as the data code, and visually readable information recorded in the light diffraction structure 2 is associated with the relationship shown in Table 2. It may be a thing.
Further, in the third usage method, in addition to the manufacturer 11, the wholesale store 12 and the retail store 13 record information on the handling store on the optical diffraction IC tag label 1, and access the product management database 15 to obtain the product. It is a requirement to check the contents or history.

The fourth method of use is to use the product between the manufacturer 11 of the product, the wholesale store 12, and the retail store 13. The manufacturer 11 records information about the product on the optical diffraction IC tag label 1 and the product. Shipping, attaching the information recorded in the product management database 15, and the wholesale store 12 and the retail store 13 access the product management database 15 and read the manufacturer and product history to read the product. The purpose is to authenticate the authenticity of.

The fifth usage method is intended to be used between the product manufacturer 11 and the wholesale store 12, the retail store 13, and the consumer 14. The manufacturer 11 writes the optical diffraction IC tag label 1, but the wholesale store 12 and the retail store 13 write the optical diffraction IC tag label 1 as necessary and register the recorded information in the product management database.
Thereby, the consumer can make an inquiry about the product contents and history to the manufacturer 11, the wholesale store 12 or the retail store 13 on the basis of the information read from the optical diffraction IC tag label 1 visually or by the non-contact IC tag reader / writer 14c. It is what.
These inquiries are made by communication means such as a mobile phone, but inquiries to the manufacturer may be made on the manufacturer's home page 9.

In this case, an encryption code that is the same as or linked to the encryption code of the distribution base recorded in the light diffraction structure 2 for each distribution base is attached to the product itself or the product packaging, and the optical diffraction IC tag label 1 is stored in the store. After the collection, the consumer can also check the distribution history from the manufacturer's homepage 9 by using the encryption code list via the Internet.

For reference, commercially available non-contact IC tag reader / writers include “I-code reader / writer” manufactured by Matsushita Industrial Equipment Co., Ltd., “ICU150” manufactured by Marstechno Science Co., Ltd., and Tamura as a handy reader / writer. There is “TR-100” manufactured by Denki Seisakusho. Moreover, as a laser beam drawing machine, there are various commercial products such as “LYCM series” manufactured by Sigma Koki Co., Ltd.

It is a figure which shows the optical diffraction IC tag label of this invention. It is a figure explaining the product information management system using the optical diffraction IC tag label of this invention. It is sectional drawing of a light diffraction structure. It is a top view after recording the laser beam drawing information which can be read in a light diffraction structure. FIG. It is a figure which shows the state which attached the optical diffraction IC tag label to the product. It is a figure explaining the distribution channel of a product.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical diffraction IC tag label 1b Base material sheet 2 Optical diffraction structure 2b Base film 3 Non-contact IC tag 3b Protection sheet 4 Adhesive layer 5 Adhesive layer 6 Separate paper 7 Hologram image or light diffraction pattern 8 Laser light drawing information 9 Manufacturer Homepage 10 Product information management system 11 Manufacturer 12 Wholesale store 13 Retail store 14 Consumer 11a, 12a, 13a Non-contact IC tag reader / writer 11b, 12b, 13b Laser beam drawing machine 11c, 12c, 13c, 14c Terminal 15 Product management database 20 Product 31 IC chip 32 Antenna

Claims (6)

A non-contact IC tag comprising an antenna and an IC chip and an optical diffraction structure capable of recording information by laser light are formed on the base sheet, and an adhesive layer is formed on the other side of the optical diffraction structure formation surface. An optical diffractive IC tag label. A non-contact IC tag comprising an antenna and an IC chip and an optical diffraction structure capable of recording information by laser light are formed on the base sheet, and an adhesive layer is formed on the other side of the optical diffraction structure formation surface. 2. The optical diffraction IC tag label according to claim 1, wherein information associated with each other is recorded in the memory of the IC chip and the optical diffraction structure capable of recording information. Optical diffraction IC tag label. 3. The optical diffractive IC tag label according to claim 1, wherein the optical diffractive structure has an emboss forming layer for generating optical diffraction and a metal reflective layer capable of recording information. The information recording on the light diffractive structure is performed by laser light on the metal reflection layer, and characters, numbers, symbols, and figures that can be read by human eyes are displayed. Item 3. The optical diffraction IC tag label according to Item 2. 4. The optical diffraction IC tag label according to claim 3, wherein the metal reflection layer is an aluminum layer. 3. The optical diffraction IC tag label according to claim 1 or 2, wherein the optical diffraction structure has a brittle structure.