JPH0830875A - Commodity management system - Google Patents

Abstract

PURPOSE:To easily prevent shoplifting and manage single articles without damaging the beauty of commodities by using achromatic encoded stamp ink where a fluorescent dye and a weak radioactive material are mixed. CONSTITUTION:A code is stamped on a detection body A (commodity) in a stamp ink 1. The stamp ink 1 or the detection body A is irradiated with infrared rays L1 having a specific wavelength from the light emitting part of a reader B. The stamp ink 1 is achromatic or approximately achromatic and transparent unaer visible rays but emits visible rays L2 under the stimulus of the specific wavelength. Only rays having the specific wavelength out of these visible rays L2 are detected by a main light reception part 3. Since the weak radioactive material is mixed in the stamp ink 1, visible rays L3 are emitted under the stimulus of radioactive rays. Then, a radioluminescence phenomenon is brought about. Rays of the specific wavelength out of these visible rays L3 are detected by an auxiliary light reception part 4. A discriminating part s shapes these analog waveforms to digital waveforms and makes waveform levels uniform.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a product management system for preventing shoplifting at a bookstore, a supermarket or the like, and for managing individual products.

[0002]

2. Description of the Related Art Conventionally, security cameras have been the most popular method for preventing shoplifting, but recently, the methods of shoplifting have become more sophisticated, aiming at the blind spot of the camera, hiding it with baggage, etc. Since it is necessary to constantly monitor the monitor, the shoplifting prevention effect of the security camera is currently very low. Therefore, there is a system that attaches a special tag to the product and monitors shoplifting of the product with a buzzer or an alarm, but this type of special tag had a built-in oscillator and battery for oscillating radio waves. Furthermore, this special tag had to be attached to or removed from the product one by one.

Further, in order to manage individual products, it is necessary to use a device different from a special tag for preventing shoplifting, such as an optical bar code.

[0004]

Among the merchandise management systems as described above, the shoplifting prevention device does not reduce the thickness and size of the special tag, and the price is relatively high.
Also, in terms of performance, detection of radio waves is likely to cause detection omissions, and if the sensitivity of the device is increased to avoid detection omissions, malfunctions occur. Furthermore, it was troublesome because it was necessary to attach and remove tags to each product.

Further, since the single product management device for products uses a detection principle which is completely different from that of the shoplifting prevention device, it cannot be used also as a device.

[0006]

[Means for Solving the Problems] A product management system for solving the above problems is a colorless or almost colorless transparent mixture of a special fluorescent dye material and a radioactive substance having a weak radioactivity harmless to the human body. A stamped ink, which is coded and directly stamped on the product, or a transparent film or card which is stamped and attached to the product, a radiation emitted from the sensing body Means for detecting
And means for detecting light emission from the detection body or light emission of a specific wavelength emitted in response to light applied to the detection body from a separately provided light source.

[0007]

The merchandise management system according to the present invention uses a colorless or almost colorless and transparent coded stamp ink in which a fluorescent dye material and a weak radioactive substance are mixed, so that it is extremely thin and inexpensive. Even if the stamp ink is directly stamped on the product, the product value is not impaired and the labor is reduced. Further, since the information contents can be changed by making the code, shoplifting of products and management of individual products can be easily performed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a diagram showing a configuration of a read-related part of the product management system.

1 is a stamp ink, 1 ₁ , 1 ₂ , ...
It is coded as 1 _n and is directly imprinted on the detection body A, or is attached as a seal or a card. Here, the detection body A is a product such as a book. The stamp ink 1 is colorless or almost colorless and transparent, and even if the stamp A is directly imprinted on it, it does not spoil the appearance. Co - example 1 ₁ as de the shop name, 1 ₂ represents the genre of goods or the like. As the stamp ink 1, a fluorescent white dye material containing a diaminostilbene disulfonic acid derivative, an imidazole derivative, a coumarin derivative, etc.
A phosphor such as rS: Sm: Eu: Bi is mixed. Of these, Eu
(Europeum) has a weak radioactivity used as a portable γ-ray source, and Sm (samarium) absorbs infrared rays to emit visible light (or light close to visible light). It has a great property of emitting light. In addition to these fluorescent materials, in some cases radioactive substances such as Ra (radium) and Sr ⁹⁰ (strontium) can be mixed together in an extremely small amount to the extent that they are harmless to the human body (used for luminescent paints). Target.

Here, one word about radiation. Radiation includes α, β, γ rays, and neutrons, but neutrons are not covered and are omitted here. The α ray is the nucleus of He (helium), which consists of two neutrons and two protons, and the energy lost while running in a substance is very large, so the ability to penetrate the substance is the smallest, β ray is It is an electron, and the distance (range) it travels in a substance is also larger than that of α rays. γ-rays are a type of electromagnetic wave, and since they do not carry an electric charge by themselves, they have a long range in a substance and have the greatest ability to penetrate a substance. Radiation of interest here is β rays and γ rays.

In the field of radiation, the dose equivalent (unit: rem: rem) is used as a measure of the danger of radiation to the human body, but the radiation dose is expressed in R (X-ray) (1R≈1rem). Currently, the legally controlled allowable dose is 100 mrem / week in areas where people inside the facility may be constantly exposed and exposed, and 30 mrem / week in controlled areas.
Although it is set to 10 mrem / week in general living areas per week, the International Commission on Radiation Protection sets the dose target value received by the public for the release of radioactive materials into the environment as whole body, 5 years per year.
It is set to mrem. In addition, as the effect of radiation on the human body, there is no medical change at a dose of 25 rem or less for the whole body, and the permissible degree of contamination of radioactive substances in the surroundings is small compared to other poisonous substances.

Next, regarding the engineering application of radiation,
Application to industrial measurement (thickness meter, radiography, moisture meter, etc.), application to elemental analysis (excitation X-ray analysis, activation analysis, sulfur meter, etc.), application to tracer (physical training)
, Chemical tracer), application to surface analysis (ion microanalyzer, etc.), application to microscopic structural analysis (X
Line diffraction method, etc.) and application as an energy source (isotope battery, atomic lamp, etc.), which is extremely small compared to the dose used in the medical field (diagnosis, treatment, etc.). Has become.

Next, B is a reading device, which comprises a light emitting section 2, a main light receiving section 3, a sub light receiving section 4 and a B discriminating section 5. The stamp ink 1 of the detector A is irradiated with infrared rays L ₁ having a wavelength λ ₁ from the light emitting portion of the reading device B. The stamp ink 1 is an ink that is colorless or almost colorless and transparent under visible light, but emits visible light (or light close to visible light) L ₂ by stimulation with a specific wavelength (λ ₁ ), a so-called photoluminescence phenomenon. Occurs. This visible light L
Only light of the wavelength lambda ₂ out of ₂ is detected at the main light receiving portion 3. As the detector of the main light receiving section 3 for detecting the specific wavelength (λ ₂ ), for example, a photodiode (not shown) provided with an optical filter that transmits the wavelength λ ₂ may be used.

Further, since the stamp ink 1 is mixed with a weak radioactive substance, a radioluminescence phenomenon in which visible light (or light close to visible light) L ₃ is emitted also by the stimulation of this radiation occurs. Of the visible light L ₃ , only the light having the wavelength λ ₃ is detected by the sub light receiving unit 4. The detector of the sub-light-receiving unit 4 may be similar to that of the main light-receiving unit 3 described above.

Since the output waveforms of the detectors in the main light receiving section 3 and the sub light receiving section 4 as described above are basically analog waveforms, in the discriminating section 5, these analog waveforms are first converted into digital waveforms. The waveform level is equalized. Next, when either or both of the reception signal from the main light receiving unit 3 and the reception signal from the sub light receiving unit 4 are identified, the B output 6 is output and the data is output to a processing device (not shown) such as a personal computer. -Send data.

FIG. 2 is a diagram showing the construction of the radiation identification related part of the commodity management system, where 1 is a stamp ink 1 ₁ ,
The detection body A provided on the product which is coded like 1 ₂ , ... 1 _{n is} the same as that shown in FIG. When the detection body A does not pass through the reading device of FIG. 1 (when there is a so-called shoplifting action etc.), the detection body A passes near the identification device C separately provided near the exit of the store. The identification device C includes a detection unit 7 and a C determination unit 8.

Here, the radiation R radiated from the stamp ink 1 is detected by the detection unit 7 (a radiation detector such as a Geiger counter) of the identification device C, and the characteristics such as the magnitude of the detected radiation dose are detected. The C discriminating unit 8 discriminates and outputs the C output 9 to give an alarm or display. If the product has been purchased at another store (the stamp ink has been directly stamped), it can be easily checked whether it is shoplifting or not by passing it through the reading device B of FIG.

[0018]

As described above, according to the present invention, a colorless or almost colorless transparent stamp ink having a weak radioactivity is coded to directly imprint a product such as a book, or Since a stamp or the like is used to affix a seal or a seal printed on a transparent film to a product, the product can be made extremely thin and inexpensive without impairing the aesthetic appearance of the product. In addition, it requires less work such as installation on the product, and the information content can be changed by coding the stamp ink. In addition, since the code reading uses two phenomena of photoluminescence and radioluminescence, extremely reliable and accurate reading can be performed, so it is possible to easily manage individual items in addition to preventing shoplifting of products. It has the effect that

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a read-related part of a product management system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a radiation identification related part of the product management system according to the embodiment of the present invention.

[Explanation of symbols]

 1 Stamp Ink 2 Light Emitting Part 3 Main Light Receiving Part 4 Sub Light Receiving Part 5 B Discriminating Section 6 B Output 7 Detecting Section 8 C Discriminating Section 9 C Output A Detecting Body B Reading Device C Identifying Device

Claims (3)

[Claims] 1. A stamp ink, which is a mixture of a special fluorescent dye material and a radioactive substance that is harmless to the human body and has a weak radioactivity, and the stamp ink is directly stamped on a product to be printed.
Detector, means for detecting radiation emitted from the detector, and emission of light from the detector, or of a specific wavelength emitted in response to light applied to the detector by a light source provided separately. A merchandise management system comprising: a means for detecting light emission. 2. A stamp ink in which a special fluorescent dye material is mixed with a radioactive substance that is harmless to the human body and has a weak radioactivity, and the stamp ink is imprinted on a transparent film to form a code. A seal or a card, a detector attached to or attached to the product, a means for detecting radiation emitted from the detector, and light emission from the detector, Or a means for detecting the emission of a specific wavelength emitted in response to the light applied to the detection body from a separately provided light source. 3. A special fluorescent dye material is one which emits light of another wavelength when irradiated with light of one wavelength, and the stamp ink is colorless or almost colorless and transparent. The product management system according to claim 1 or claim 2.