WO2004025550A1 - 暗号情報内有材料、その識別方法およびその識別システム - Google Patents
暗号情報内有材料、その識別方法およびその識別システム Download PDFInfo
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- WO2004025550A1 WO2004025550A1 PCT/JP2003/010430 JP0310430W WO2004025550A1 WO 2004025550 A1 WO2004025550 A1 WO 2004025550A1 JP 0310430 W JP0310430 W JP 0310430W WO 2004025550 A1 WO2004025550 A1 WO 2004025550A1
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- WIPO (PCT)
- Prior art keywords
- information
- presenting substance
- fluorescence
- information presenting
- substance
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/44—Resins; rubber; leather
- G01N33/442—Resins, plastics
Definitions
- specific cryptographic information can be written by adding a particulate information presenting substance to materials such as various plastics, paints, inks, fibers, papers, and metals.
- the present invention relates to a cryptographic information possessed material, an identification method thereof, and an identification system.
- the labels and labels described above are attached at the production stage, etc., and their production areas and distribution routes are specified.
- wastes such as industrial products are marked or stamped at the production stage, etc., as described above, and their identification and sorting are performed.
- these signs were destroyed or stripped by unauthorized third parties
- a material to which a substance that is associated with predetermined cryptographic information according to its content hereinafter referred to as a “cryptographic information presentation substance”.
- the material is irradiated with an electromagnetic wave in a predetermined wavelength range, and the fluorescence emitted from the information presenting substance with the irradiation of the electromagnetic wave is detected.
- the type and content of the information presenting substance can be specified based on the detection result of the fluorescence of the information presenting substance, and the encryption information can be specified from the type and content of the specified information presenting substance.
- the type and content of the information presenting substance are measured by detecting the fluorescence of the information presenting substance by an unauthorized third party, and the fluorescence of the information presenting substance is reproduced.
- high confidentiality of the cryptographic information of the material could not be secured. That is, if an unauthorized third party detects the fluorescence of the information presenting substance from the genuine material, there is a possibility that the type and content of the information presenting substance provided in the genuine material can be grasped from this fluorescence.
- By adding the same kind and the same amount of information presenting substance to the material there was a problem that a material emitting the same fluorescence could be forged.
- an unauthorized third party could falsify a material emitting a different fluorescence by further adding a predetermined type and content of an information presenting substance to the material.
- the present invention has been made in view of the above-mentioned problems, and has been disclosed by a third party as information. Fluorescence of the presented substance is not reproduced, high confidentiality of the cryptographic information of the material can be ensured, and consequently, cryptographic information-containing material that can prevent forgery and tampering of the material and a method for identifying the material And to provide an identification system.
- the present invention focuses on the fact that when an information presenting substance is made into fine particles, the information presenting substance emits different fluorescence according to its production history, and presents information by using a production history associated with specific cryptographic information. By creating a substance, specific cryptographic information is associated with the information presenting substance, and the information presenting substance is added to the material, thereby enclosing the cryptographic information in the material.
- the present invention is a cryptographic information-containing material to which a particulate information presenting substance is added, wherein the information presenting substance is used for irradiation of electromagnetic waves in a specific wavelength region.
- the information presenting substance consists of one or more elements that emit different fluorescence depending on the production history, a compound of two or more elements, or a substance containing those elements or compounds, and the information presenting substance is specified It is characterized in that the information presenting substance is associated with specific cryptographic information by being produced by the production history corresponding to the cryptographic information.
- the term “material” is used to include not only a material used as a material for manufacturing a product but also a product manufactured using the material.
- the term “cryptographic information” is used to mean not only complicated combinations of symbols promised only to the parties but also simple letters, numbers, symbols, or combinations thereof.
- the term “production history” is used to include not only a method for producing an information presenting substance but also production conditions such as a firing temperature and a firing time of the information presenting substance. According to this, even if the fluorescence of the information presenting substance is detected by an unauthorized third party, the production history can change almost infinitely. Since it is impossible to grasp the production history of the information presenting substance, it is possible to reproduce the fluorescence of the information presenting substance without making the information presenting substance with the same production history by an unauthorized third party And the encryption information of the material High confidentiality can be secured.
- the information presenting substance emits a line spectrum in response to irradiation of an electromagnetic wave in a specific wavelength region in accordance with the production history.
- the line spectrum has a very narrow wavelength width and a very high fluorescence intensity, the fluorescence of the information presenting substance can be detected with high accuracy.
- the information presenting substance contains a transition element having an incomplete 3d shell and / or a transition element having an incomplete 4: f shell.
- the information presenting substance reliably emits the above-mentioned line spectrum, it is possible to accurately detect the fluorescence of the information presenting substance.
- the information presenting substance has a particle size of 1 to 100 nm.
- the information presenting substance reliably emits different fluorescent light according to the production history, so that the cryptographic information contained in the material can be easily and reliably identified.
- the outside of the information presenting substance is coated with a substance other than the information presenting substance.
- the particle size and structure of the information presenting substance can be fixed, the luminous efficiency can be improved, and the information presenting substance can be easily dissolved in a specific solvent, and the surrounding substance can be easily dissolved. Can be more familiar.
- the present invention is the method for identifying a material included in cryptographic information, wherein the material included in the cryptographic information is irradiated with an electromagnetic wave in a predetermined wavelength range, and the material is radiated from the information presenting substance with the irradiation of the electromagnetic wave.
- Detected fluorescence identifies encryption information corresponding to the production history of the information-presenting substance that emits the fluorescence based on the detection result of the fluorescence of the information-presenting substance, and encrypts the information based on the identified encryption information. It is characterized by identifying the material contained in the information.
- the present invention is the identification system for identifying the material contained in the encrypted information, wherein the material contained in the encrypted information is irradiated with an electromagnetic wave of a predetermined wavelength region, and the information presenting substance is irradiated with the irradiation of the electromagnetic wave.
- identifying means for identifying the material contained in the cryptographic information based on the cryptographic information specified by the specifying means.
- FIG. 1A is a spectrum analysis diagram of the fluorescence of an information presenting substance composed of indium oxide containing europium prepared at a firing temperature of 75 ° C.
- FIG. 1B is a spectrum analysis diagram of the fluorescence of an information presenting substance composed of indium oxide containing europium prepared at a firing temperature of 500 ° C.
- FIG. 2A is a spectrum analysis diagram of the fluorescence of an information presenting substance composed of yttrium oxide containing europium prepared by a gas coagulation method.
- FIG. 2B is a spectrum analysis diagram of the fluorescence of an information presenting substance made of yttrium oxide containing europium prepared by a sol-gel method.
- FIG. 3 is a diagram showing the relationship between the peak intensity ratio of fluorescence and the firing temperature of an information presenting substance made of indium oxide containing europium.
- FIG. 4 is a graph showing the relationship between the integrated intensity ratio of fluorescence and the particle size of an information presenting substance composed of yttrium oxide containing europium.
- FIG. 5 is a schematic configuration diagram of an identification system for identifying material contained in cryptographic information according to this embodiment.
- FIG. 6 is a diagram showing a hardware configuration of the detection device of FIG.
- FIG. 7 is a diagram showing a hardware configuration of the computer of FIG.
- FIG. 8 is a flowchart showing the operation of the identification system of FIG.
- FIG. 9 is a spectrum analysis of the fluorescence of CdS ultrafine particles containing europium at room temperature produced by the colloid method.
- FIG. 10 is a spectrum analysis diagram obtained by measuring the same thing as in FIG. 9 with a 90 ° phase shift with respect to the intensity-modulated excitation light.
- This cryptographic information-containing material (A) is a cryptographic information-containing material to which a particulate information presenting substance has been added.
- This information-presenting substance emits one or more elements that emit different fluorescence depending on the production history when irradiated with electromagnetic waves in a specific wavelength range, a compound of two or more elements, or a compound of these elements or It consists of a substance containing a compound. Then, the information presenting substance is produced by the production history corresponding to the specific cryptographic information, so that the specific cryptographic information is associated with the information presenting substance.
- the material (A) is made of paint, ink, paper, fiber, metal, or the like, in addition to various plastic materials.
- This material (A) can be used for various products.
- material (A) applies to all products that are distributed in the market, such as home appliances, apparel, jewelry, satiety, shoes, accessories, timepieces, rings, clothes, stationery, tableware, interior products, paintings, and scrolls. Can be used.
- the material (A) may be used for natural products as long as it can be distributed on the market, and may be used for meat, vegetables, wild vegetables, seafood, drinking water, processed foods, and pharmaceuticals.
- materials (A) may be used in the form of certificates, securities, certificates, banknotes, coins, passports, driver's licenses, health insurance cards, checks, It can also be used for stock certificates and the like.
- the material (A) is used for packaging materials (such as inner boxes, outer boxes, instructions, wrapping paper, wrapping bags, cardboard, Styrofoam, plastic containers, etc.) used for the above products, etc. It can also be used for labels and tags that are used.
- the information presentation substance When the information presentation substance is irradiated with a predetermined electromagnetic wave such as an ultraviolet ray, the information presentation substance emits a predetermined fluorescence with the irradiation of the electromagnetic wave. This is because, when electromagnetic waves such as ultraviolet rays are radiated from the outside, ions of the information presenting substance are excited from the ground level to a higher energy level, and then transition to a lower energy level. Because it emits light.
- a predetermined electromagnetic wave such as an ultraviolet ray
- the information presenting substance emits different fluorescence depending on its type and content, but in the present invention, the emitted fluorescent light also differs depending on the production history of the information presenting substance. It focuses on that. In other words, even if the information-presenting substances are of the same type and content, if their production histories (production method or production conditions) are different, they emit different fluorescence, and do not emit the same fluorescence. A number of fluorescent spectra can be created.
- FIG. 1 for information presentation material oxide Itsutori ⁇ beam containing trivalent europium ions (E u 3 +) ( ⁇ 2 ⁇ 3), when prepared in (Alpha) firing temperature 7 5 0 ° C
- (B) shows a spectrum analysis diagram of the fluorescence when produced at a firing temperature of 500 ° C. From Fig. 1, it can be seen that when the firing temperature is different, The length slightly changed, and especially the fluorescence intensity of the 628 nm fluorescent line also changed. It can be confirmed that the emitted fluorescence differs when the firing temperature differs.
- FIG. 2 also for the information presentation material oxidation German tri ⁇ beam (Y 2 0 3) containing europium ion (Eu 3+), when prepared in (Alpha) gas coagulation, (beta) Sol- FIG. 3 shows a spectrum analysis diagram of the fluorescence when produced by a gel method. From Fig. 2, it can be confirmed that both the wavelength and the fluorescence intensity of the 612 nm and 628 nm fluorescent lights vary greatly when the fabrication method is different, and that the emitted fluorescence is different when the fabrication method is different. .
- Figure 3 shows the peaks of the 628 nm and 612 nm fluorescence lines of the fluorescence spectrum of the information presenting substance of yttrium oxide (Y203) containing 2 mo 1% europium ion (Eu 3+ ). Is plotted for each firing temperature (fixed firing time) of the information-presenting substance (Y 2 ⁇ 3 : Eu 3+ ). From Figure 3, the information presenting substance (Upsilon 2 ⁇ 3: Eu 3+), if the firing temperature (manufacturing conditions) is continuous varying, fluorescence can also be confirmed that changes continuously to radiation. In the FIG. 3, although the firing time constant, changing the calcination time, the information presenting substance: fluorescence are different emitted from (Upsilon 2 ⁇ 3 E u 3+).
- FIG. 4 the 628 nm and 612 nm of the fluorescence radiation of the integrated intensity ratio information presenting substance: is obtained by plotting for each particle size of (Upsilon 2 ⁇ 3 Eu 3+). From Fig. 4, it can be seen that the information presenting substance ( ⁇ 2 ⁇ 3 : Eu 3+ ) changes continuously as the particle size changes, and the integrated intensity ratio of the fluorescent light also changes continuously. It can be confirmed that the integrated intensity ratio of the fluorescent light increases. It was confirmed that when the particle size changes continuously, the decay time constant of the fluorescence intensity also changes continuously.
- each material (A) emits a different fluorescence from the assigned information presenting substance.
- an information presenting substance that is associated with cryptographic information in correspondence with only the type and content of the information presenting substance is added to the material (A)
- the fluorescence of the information presenting substance is detected by an unauthorized third party
- the type and content of the information-presenting substance are easily specified.
- an unauthorized third party can forge a material (A) that emits the same fluorescence as the genuine material by adding the same type and the same amount of the information presenting substance to the material (A), or By providing different types and contents of information presenting substances, there is a problem that the material (A) that emits fluorescence different from the genuine material is falsified.
- the element related to the information presenting substance is preferably one or more elements that are not generally contained in various general-purpose materials.
- elements having atomic numbers 31 to 88 preferably lanthanide elements, and more preferably neodymium (N d) , Samarium (S m), europium (E u), gadolinium (G d), terbium (T b), and holmium (H o) may be used in one kind or in a combination of two or more kinds.
- N d Samarium
- S m europium
- G d gadolinium
- T b terbium
- H o holmium
- the element relating to the information presenting substance is preferably one or more elements that emit fluorescence having a narrow wavelength width (line spectrum).
- a transition element having an incomplete 3d shell or a transition element having Z and an incomplete 4f shell are added.
- Glass or transition elements with imperfect 3d shells, or transition elements with imperfect 3d shells, or transition elements with imperfect 3d shells, or imperfect 4f Examples include complexes centered on transition elements having f-shells.
- These information presenting substances are irradiated with electromagnetic waves in a predetermined wavelength range, preferably in the wavelength range from infrared light to ultraviolet light, and more preferably in the wavelength range from visible light to near infrared light.
- the emission of the electromagnetic waves causes the emission of fluorescence (line spectrum) having a very narrow wavelength width and a very high fluorescence intensity, so that the fluorescence of the information presenting substance can be accurately detected.
- the information presenting substance may be a substance in which a transition element is provided for a predetermined base material, such as the above-described yttrium oxide ( ⁇ 2 ⁇ 3 ) containing europium ion (Eu 3+ ).
- the host material is preferably an inorganic crystal such as an oxide, a sulfide, a nitride, a hydroxide, or a halide, but is not limited thereto, and may be an organic substance, an organic-inorganic hybrid compound, a mixed crystal, an amorphous substance, or a glass. And so on.
- those containing transition elements in the form of chemical bonds, such as chelate compounds, those that replace other atoms or ions that make up the crystal lattice, those that are included in the crystal lattice, or glass Included in the gaps inside.
- an information presenting substance when an information presenting substance is produced using inorganic oxides as a base material, For example, even if the temperature is raised to 1000 ° C., it is not destroyed and remains in the material (A). Therefore, even if the material (A) is incinerated or is illegally dumped after incineration, the fluorescence of the information presenting substance can be detected. Also, even when the material (A) is a liquid such as an aqueous solvent / organic solvent solution or a turbid liquid, the information presenting substance does not undergo a chemical change, and the fluorescence of the information presenting substance is detected. be able to. Therefore, information presenting substances can be provided to products other than products distributed in the factory, such as waste liquid discharged from factories.
- the information presenting substance is a fine particle having an average particle size of 1 nm to 100 nm, preferably 1 to 700 nm, more preferably 1 to 500 nm, and most preferably 1 nm to 100 nm. Frequently, the particles may form multimers such as dimers or trimers. By reducing the particle size of the information presenting substance in this way, a change in the fluorescence of the information presenting substance due to a difference in the production history is likely to occur, and the fluorescence of the information presenting substance can be detected more accurately.
- the following methods are used: the dan-dana method, the sol-gel method, the colloid method, the gas coagulation method, the gas reaction method, the gas evaporation method, the sputtering method, the glass crystallization method, the precipitation method, and the spray method.
- Various methods can be used.
- the information presenting substance may be a substance whose surface is modified with a surface modifier such as deuterium or an organic substance, or a substance whose periphery is coated with a substance other than the base material. According to this, the particle size and the structure can be fixed, the luminous efficiency can be improved, and it can be easily dissolved in a specific solvent, and can be more compatible with surrounding substances.
- the information presenting substance is provided on the surface, inside, or a part of the material (A).
- the information presenting substance is applied to the material (A) by spraying, spraying, applying, adsorbing, pouring, filling, sticking, penetrating, mixing, adding, or by chemical bonding (polymerization, crosslinking, ionic bonding, etc.).
- a drum tumbler For example, a method of performing dry blending and then directly molding, a method of compounding with an extruder, a method of performing compounding or molding with an internal mixer or a heating roll, and the like are used. In addition, it may be used after being made into a master batch.
- a fatty acid amide, a fatty acid metal salt, or a fatty acid ester may be used as a lubricant in order to ensure uniform distribution and dispersion.
- the information presenting substance is contained in a trace amount that does not affect the intrinsic properties of the material ( ⁇ ) in order to suppress the influence on the appearance and physical properties of the material ( ⁇ ).
- the minute range that does not affect the intrinsic properties of the material ( ⁇ ) can vary in various ways depending on the type of the material ( ⁇ ), but is preferably 0.1 ppm for the material (pm).
- the range is from 0.5 to 1000 ppm (including 0.5 ppm and 1000 ppm), more preferably from 0.5 ppm to 200 ppm (including 0.5 ppm and 200 ppm).
- the range of 0.5 ppm to 200 ppm within the range is that the reliability of the measurement is sufficiently ensured, the economic burden is kept low, and the inherent properties of the material (A) The impact can be extremely low.
- the material (A) may be provided with a plurality of information presenting substances.
- the material (A) has numerical data of a plurality of digits as cryptographic information, and the numbering can be performed for a plurality of materials (A).
- material (A) is 10 six fluorescence spectrum Will show.
- Each information-presenting substance is Assuming that the fluorescence intensity of each information-presenting substance corresponds to the numerical value of the digit corresponding to the predetermined digit in the evening, the numerical value of the material (A) in 6 decimal digits (000001 to 999999) You can make your own.
- the cryptographic information is associated with the information presenting substance as described above, and corresponds to a production history such as a production method and production conditions.
- a given analyst can analyze that the information-presenting substance was prepared at the firing temperature (750 ° C), and the corresponding material type of the encrypted information (A) can be specified.
- the fluorescence of the information-presenting substance is detected as shown in Fig.
- the specified analyst can analyze that the information-presenting substance was prepared at the firing temperature (500 ° C), and the corresponding cryptographic information Material type (B) can be specified.
- An unauthorized third party can predict the type and content of the information presenting substance to some extent from the fluorescence shown in Figs. 1A and 1B, but must also predict the history of the production of the information presenting substance. Therefore, it is impossible to produce an information presenting substance that emits the same fluorescence.
- the encryption information material types (A, B, C, D , E, F) , the manufacturing history information presenting substance (Y 2 ⁇ 3: Eu 3+) firing temperature (300 ° C, 400 ° C , (500 ° C, 600 ° C, 800 ° C, 900 ° C), the peak intensity ratio (a, b, c, d, e) of 61211311 and 628] m fluorescence (line spectrum) If is detected, the information presenting substance is prepared at any of the firing temperatures (300 ° C, 400 ° C, 500 ° C, 600 ° C, 800 ° C, 900 ° C) as shown in Fig. 3.
- the manufacturing history of the information presenting substance is not limited to the firing temperature, but may be other manufacturing conditions such as firing time or manufacturing method.
- the cryptographic information is not particularly limited and is determined according to the material (A).
- the encryption information includes information on a user and information such as an identification number.
- the encryption information includes information on the identification number of the brand product, the manufacturer, the production history, or the material.
- the cryptographic information includes information on the industrial product material, the identification number of the industrial product, the manufacturer, the manufacturing history, or the material.
- the material (A) is a food label, information such as a food production place and a production time is cited as the encryption information.
- (A) provided with the information presenting substance is practically impossible to destroy or peel off because the information presenting substance is chemically stable and fine particles.
- the amount of the information presenting substance is extremely small, and the particle size is particularly small, such as 1 to 1000 nm. Therefore, it is difficult to identify the information presenting substance by physical analysis or chemical analysis. .
- the fluorescence of the information-presenting substance differs depending on the production history, such as the production method and the production conditions, even if the fluorescence of the information-presenting substance is detected by an unauthorized third party, only the fluorescence of the information-presenting substance is used. Since the production history cannot be specified, the same fluorescence cannot be reproduced, making it difficult to forge or falsify the material (A).
- many types of such information presenting substances can be produced and can be added to almost all materials, confidential information is concealed from various types of products in many fields. It is possible to have the property in a state where the property is secured. [Identification system]
- this identification system is based on a detection device (1) for detecting the fluorescence of the information presenting substance given to the material (A), and a detection result obtained by the detection device (1).
- the computer (2) and the detection device (1) or the response device (3) may transmit and receive information via a network such as the Internet.
- the detection device (1) irradiates the material (A) with an electromagnetic wave in a predetermined wavelength range, and detects fluorescence emitted from the information presenting substance with the irradiation.
- the horizontal axis represents the wavelength of the information presenting substance
- the vertical axis represents the fluorescence intensity of the information presenting substance. It is represented by a spectrum analysis chart.
- the detection result of the fluorescence of the information presenting substance is transmitted to the computer (3).
- the detection device (1) is preferably a device to which a technique such as a spectral system using a semiconductor laser and a CCD and time-resolved spectral or modulation-resolved spectral is applied.
- this detector (1) is provided with an excitation light source (11) such as a germicidal lamp or a semiconductor laser, and a chopper (not shown) for intermittently exciting or modulating the intensity of the excitation light. 12), a lens (13) for collimating light or condensing light, an interference filter (14) that passes only light of a predetermined wavelength, and an interference filter (14) A piezo element (15) that oscillates the angle and modulates the wavelength of light that easily passes through, a photodetector (16) that generates a current or voltage according to the light intensity, and a chopper (12) To a specific phase Or a circuit (17) for extracting a component at a specific time.
- the detection device (1) may be any device that detects the fluorescence of the information presenting substance of the material (A), and is not limited to the above configuration.
- the method of detecting the fluorescence of the information presenting substance by the detection device (1) there is a method of intermitting an electromagnetic wave (excitation light) and measuring the fluorescence immediately after the excitation is cut off, or a method of periodically changing the intensity of the excitation light.
- an electromagnetic wave excitation light
- the fluorescence of an information presenting substance such as a transition element ion can be accurately detected.
- the information-presenting substance emits fluorescence with a narrow wavelength width (line spectrum)
- use a method that modulates the excitation light wavelength or the fluorescence detection wavelength to record the change in fluorescence intensity.
- a spectrum with a high S / N ratio can be obtained.
- the computer (2) includes: a receiving unit (21) for receiving the detection result of the fluorescence of the information presenting substance transmitted from the detection device (1); A reference table storage unit (22) for storing a reference table set so that the information corresponds to each other; a transmission unit (23) for transmitting predetermined information to the response device (3); And a control unit (24).
- the control unit (24) is composed of a central processing unit (CPU) and the like, and performs data transfer, various calculations, temporary storage of data, and the like.
- the control unit (24) is configured to control the reference table stored in the reference table storage unit (22) based on the detection result of the fluorescence of the information presenting substance received by the reception unit (21). Has the function of specifying the cryptographic information by referring to the information and further identifying the material (A) based on the specified cryptographic information.
- the response device (3) performs a predetermined operation based on the identification result by the computer (2).
- the response device (3) may be a device equipped with a monitor or speaker that outputs true / false information.
- the reaction device (3) may be a separation device for separating the industrial product material.
- the material (A) is an entry management ID card, a door opening / closing device or the like may be used as the response device (3).
- the response device (3) may be an electronic cash register or the like.
- the response device (3) may be a monitor or a printer that outputs chart information or drug information. If the material (A) is a resident management ID card, the response device (3) may be a monitor or printer that outputs a resident's card, a seal certificate, or the like.
- the detection device (1), computer (2), and response device (3) are separately integrated
- step is abbreviated as “S”.
- the detection device (1) irradiates the material (A) disposed at a predetermined location with an electromagnetic wave in a predetermined wavelength region, and detects fluorescence emitted from the information presenting substance with the irradiation. (S1).
- the detection device (1) transmits the detection result of the fluorescence of the information presenting substance to the computer (2) (S2).
- the computer (2) receives the detection result of the fluorescence of the information presenting substance transmitted from the detection device (1) by the receiving section (21) (S3). Then, the computer (2) controls the receiving unit (
- the encryption information is specified by referring to the reference table stored in the reference table storage unit (22) (S4).
- the computer (2) uses the control unit (24) to identify the material (A) based on the specified encryption information (S5).
- the computer (2) transmits predetermined information to the response device (3) based on the identification result of the material (A) in the processing of S5 (S6).
- the response device (3) receives the predetermined information transmitted from the computer (2) (S7), and performs predetermined operations such as displaying various screens and sorting based on the received predetermined information (S7). S 8).
- Y 2 ⁇ 3 containing one kind of trivalent lanthanide ion such as Eu 3+ , Sm 3+ , Tb 3+ , Er 3+ was prepared by sol-gel method.
- Reagents used in the production is, nitric Ittoriu arm tetrahydrate Y (NO) 3: 4H 2 0, europium acetate tetrahydrate Eu (chaco ⁇ ) 3: 4H 2 0, samarium acetate tetrahydrate Sm (CHsCOO ) 3: 4H 2 0, acetic acid terbium tetrahydrate Tb (CHaCOO) 3: 4H 2 0, erbium acetate 4 hydrate thereof
- E r (CHsCOO) 3: 4H 2 ⁇ carbonates Natoriumu Na 2 C0 3. Distilled water was used as the solvent.
- the firing temperature is low, the firing time is short, and the particle size of the information presenting substance is small.
- the pattern, peak wavelength, intensity ratio, etc. of the fluorescent light may differ depending on the method and conditions for preparing the information presenting substance, even if the composition of the information presenting substance does not change. I understood.
- CdS microparticles containing trivalent europium ions were prepared by the colloid method.
- the reagents used for the preparation were acetic acid domedium dihydrate C d (CHaCOO) 2 : 2H 2 ⁇ , europium acetate dihydrate E u (CHsCOO) 3: 2H 20 , sodium sulfide 9 hydrate Na 2 S: 9H 2 ⁇ .
- dimethylformamidine de CsH 7 N methyl alcohol is used CHsOH.
- phenylthiotrimethylsilane CsHsSS i (CH 3 ) 3 was used as a surface modifier to cover the surface of the C d S fine particles and to fix the size of the fine particles.
- Cadmium acetate (0.255 mmol) and europium acetate (0.025 mmol) were dissolved in dimethylformamide (100 ml), placed in an eggplant-shaped flask, and cooled to 0 ° C with ice. Argon gas was flowed for 15 minutes to remove oxygen components in the liquid. 0.25 mol of sodium sulfide was dissolved in 5 ml of methyl alcohol with a stirrer, and added to the upper flask. When the eggplant flask was stirred for 1.5 hours with an evaporator, cadmium acetate and sodium sulfide reacted to form CdS fine particles.
- the average particle size of the prepared information presenting substance was 2.2 nm.
- the fluorescence spectrum when excited by ultraviolet light is based on the CdS defect, as shown in Fig. 9.
- a narrow fluorescent line around 620 nm by Eu 3+ ions is superimposed on a broad band that seems to be light emission. Therefore, the intensity of He-Cd laser light (325 nm) was modulated using a chopper of 750 Hz and applied to the sample, and only the fluorescent component 90 ° out of phase with the excitation light was detected. As shown in FIG. 10, only thin fluorescent lines due to Eu 3+ ions were observed.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003262245A AU2003262245A1 (en) | 2002-08-19 | 2003-08-19 | Cipher information-containing material, its identifying method, and its identifying system |
JP2004535874A JPWO2004025550A1 (ja) | 2002-08-19 | 2003-08-19 | 暗号情報内有材料、その識別方法およびその識別システム |
EP03795226A EP1548636A1 (en) | 2002-08-19 | 2003-08-19 | Cipher information-containing material, its identifying method, and its identifying system |
US10/524,822 US20060106621A1 (en) | 2002-08-19 | 2003-08-19 | Cipher information-containing material, its identifying method, and its identifying system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-237828 | 2002-08-19 | ||
JP2002237828 | 2002-08-19 |
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WO2004025550A1 true WO2004025550A1 (ja) | 2004-03-25 |
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PCT/JP2003/010430 WO2004025550A1 (ja) | 2002-08-19 | 2003-08-19 | 暗号情報内有材料、その識別方法およびその識別システム |
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US (1) | US20060106621A1 (ja) |
EP (1) | EP1548636A1 (ja) |
JP (1) | JPWO2004025550A1 (ja) |
KR (1) | KR20050058373A (ja) |
CN (1) | CN1689033A (ja) |
AU (1) | AU2003262245A1 (ja) |
WO (1) | WO2004025550A1 (ja) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008154898A (ja) * | 2006-12-26 | 2008-07-10 | Samii Kk | 遊技機の不正行為防止装置 |
WO2009078426A1 (ja) * | 2007-12-18 | 2009-06-25 | Idec Corporation | 波長変換器及び発光装置 |
WO2009073463A3 (en) * | 2007-11-30 | 2009-07-23 | Honeywell Int Inc | Authenticatable mark, systems for preparing and authenticating the mark |
EP1757640A4 (en) * | 2004-05-10 | 2010-09-29 | Plagenom Co Ltd | THERMOPLASTIC PLASTIC AND METHOD FOR PRODUCING THE SAME |
JP2012511195A (ja) * | 2008-12-08 | 2012-05-17 | ポリセキュア ゲーエムベーハー | 物品を認証および/または特定する方法 |
CN104318441A (zh) * | 2014-09-19 | 2015-01-28 | 金发科技股份有限公司 | 一种防伪垃圾袋真伪鉴别的系统和方法 |
CN104463295A (zh) * | 2005-05-10 | 2015-03-25 | 数据跟踪Dna控股公司 | 使用发光标记物的痕量结合高分辨度地跟踪工业过程材料 |
WO2023190354A1 (ja) * | 2022-03-28 | 2023-10-05 | 三菱ケミカル株式会社 | 積層プラスチックフィルム、積層プラスチックフィルムのリサイクル原料としての使用、リサイクル原料用積層プラスチックフィルム及びリサイクルプラスチックフィルムの製造方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2431732A1 (en) * | 2010-09-21 | 2012-03-21 | Dow Global Technologies LLC | Linking on-line analysis and tracer technology |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS638157B2 (ja) * | 1983-11-02 | 1988-02-20 | Roonu Puuran Supeshiarite Shimiiku | |
JPH03164991A (ja) * | 1989-11-24 | 1991-07-16 | Mercian Corp | 分類識別用標識 |
WO2001078288A2 (en) * | 2000-04-06 | 2001-10-18 | Quantum Dot Corporation | Differentiable spectral bar code methods and systems |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4004178A (en) * | 1974-10-03 | 1977-01-18 | Gte Laboratories Incorporated | White light source |
FR2566440B1 (fr) * | 1984-06-22 | 1988-07-22 | Jalon Michel | Fibres de securite et autres matieres rendues luminescentes par un procede de teinture, leurs procedes de realisation et leurs applications |
ATE77427T1 (de) * | 1987-08-19 | 1992-07-15 | Gao Ges Automation Org | Sicherheitspapier. |
US6123263A (en) * | 1998-01-29 | 2000-09-26 | Meta Holdings Corporation | Hand held dataform reader having strobing ultraviolet light illumination assembly for reading fluorescent dataforms |
US6877032B1 (en) * | 1998-09-11 | 2005-04-05 | L.V. Partners, L.P. | Launching a web site using a portable scanner |
US6832729B1 (en) * | 2001-03-23 | 2004-12-21 | Zih Corp. | Portable data collection device for reading fluorescent indicia |
US20030194578A1 (en) * | 2001-12-20 | 2003-10-16 | Honeywell International, Inc. | Security articles comprising multi-responsive physical colorants |
-
2003
- 2003-08-19 AU AU2003262245A patent/AU2003262245A1/en not_active Abandoned
- 2003-08-19 JP JP2004535874A patent/JPWO2004025550A1/ja active Pending
- 2003-08-19 US US10/524,822 patent/US20060106621A1/en not_active Abandoned
- 2003-08-19 WO PCT/JP2003/010430 patent/WO2004025550A1/ja not_active Application Discontinuation
- 2003-08-19 KR KR1020057002828A patent/KR20050058373A/ko not_active Application Discontinuation
- 2003-08-19 EP EP03795226A patent/EP1548636A1/en not_active Withdrawn
- 2003-08-19 CN CNA038244047A patent/CN1689033A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS638157B2 (ja) * | 1983-11-02 | 1988-02-20 | Roonu Puuran Supeshiarite Shimiiku | |
JPH03164991A (ja) * | 1989-11-24 | 1991-07-16 | Mercian Corp | 分類識別用標識 |
WO2001078288A2 (en) * | 2000-04-06 | 2001-10-18 | Quantum Dot Corporation | Differentiable spectral bar code methods and systems |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1757640A4 (en) * | 2004-05-10 | 2010-09-29 | Plagenom Co Ltd | THERMOPLASTIC PLASTIC AND METHOD FOR PRODUCING THE SAME |
CN104463295A (zh) * | 2005-05-10 | 2015-03-25 | 数据跟踪Dna控股公司 | 使用发光标记物的痕量结合高分辨度地跟踪工业过程材料 |
JP2008154898A (ja) * | 2006-12-26 | 2008-07-10 | Samii Kk | 遊技機の不正行為防止装置 |
WO2009073463A3 (en) * | 2007-11-30 | 2009-07-23 | Honeywell Int Inc | Authenticatable mark, systems for preparing and authenticating the mark |
CN101933028A (zh) * | 2007-11-30 | 2010-12-29 | 霍尼韦尔国际公司 | 可鉴别标记、用于制备和鉴别标记的系统 |
WO2009078426A1 (ja) * | 2007-12-18 | 2009-06-25 | Idec Corporation | 波長変換器及び発光装置 |
JPWO2009078426A1 (ja) * | 2007-12-18 | 2011-04-28 | Idec株式会社 | 波長変換器及び発光装置 |
JP5134618B2 (ja) * | 2007-12-18 | 2013-01-30 | Idec株式会社 | 波長変換器及び発光装置 |
JP2012511195A (ja) * | 2008-12-08 | 2012-05-17 | ポリセキュア ゲーエムベーハー | 物品を認証および/または特定する方法 |
CN104318441A (zh) * | 2014-09-19 | 2015-01-28 | 金发科技股份有限公司 | 一种防伪垃圾袋真伪鉴别的系统和方法 |
WO2023190354A1 (ja) * | 2022-03-28 | 2023-10-05 | 三菱ケミカル株式会社 | 積層プラスチックフィルム、積層プラスチックフィルムのリサイクル原料としての使用、リサイクル原料用積層プラスチックフィルム及びリサイクルプラスチックフィルムの製造方法 |
Also Published As
Publication number | Publication date |
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JPWO2004025550A1 (ja) | 2006-01-12 |
EP1548636A1 (en) | 2005-06-29 |
US20060106621A1 (en) | 2006-05-18 |
CN1689033A (zh) | 2005-10-26 |
AU2003262245A1 (en) | 2004-04-30 |
KR20050058373A (ko) | 2005-06-16 |
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