JP4584732B2 - ID card - Google Patents

Description

  The present invention relates to an ID card in an area requiring a high level of security.

  Japanese Patent Application Laid-Open No. 2001-155202 (Patent Document 1) discloses an example of an entrance / exit management system using a rewrite card, a rewrite card printing device, an electronic camera that captures a photograph of the entrance / exit's face, and a personal data storage file. Are connected to each other via a computer, and a white cloudy, leuco, and magnetic rewrite card that records the photos and personal data of the visitors is used to make it easy to check the visitors. In addition, an entrance / exit management system is described in which the rewrite card printing device rewrites a rewrite card's face photograph to the latest and stores it in a personal data storage file.

  Japanese Patent Laid-Open No. 2002-207975 (Patent Document 2), as a reversible information recording and utilization system using a card of a reversible information recording medium, has a function of rewriting colors and images on a card every specific time or period. A reversible information recording and utilization system is described in which important information such as expiration date and schedule is conspicuous so that information such as expiration can be easily recognized, and a heat-sensitive cholesteric liquid crystal compound as a reversible recording material for the card Is described.

  Japanese Patent Application Laid-Open No. 2004-020596 (Patent Document 3) discloses a reversible image display medium that performs multicolor display by laminating photosensitive layers individually containing three types of photochromic compounds having different hues. The decolored photochromic compounds have different threshold wavelengths for transition to the colored state, and are disposed between the lowermost photosensitive layer and the photosensitive layer located thereon, and between the uppermost photosensitive layer and the lower layer. A reversible image display medium is described in which a light-shielding layer that shields light for color development of a photochromic compound is provided between the photosensitive layer positioned.

  In addition, in Japanese Patent Laid-Open No. 9-319877 (Patent Document 4), a rewritable recording medium such as an IC card, an FD, or an optical disk is provided as an example of a security system (person identification method, person identification device and entry / exit management system). The first step of storing the personal information required for the personal identification in the storage means before performing the personal identification, the personal information stored in the first step, and the information carried by the person to be confirmed A second step of collating the person information stored in the recording medium, and the person stored in the storage means when the person to be confirmed is confirmed to be the person based on the collation result in the second step. A personal identification method including a third step of updating information by rewriting information with the latest personal information is described.

  We also use photo energy as the energy to rewrite images in ID cards with face photos for identification purposes, which are characterized by the ability to rewrite full-color face photo images. An ID card characterized by using a photochromic compound as a coloring material for a photographic image has already been developed (Japanese Patent Application No. 2003-193863 (Patent Document 5)).

  However, these security systems using ID cards are difficult to control the quality of the cards and are relatively expensive, are troublesome to handle and handle the cards, have difficulty in durability, There are advantages and disadvantages, such as a slight problem in performance, difficulty in discarding after use, and a complicated information processing system, and it is difficult to say that they are sufficiently satisfactory.

  In particular, a method of attaching an ID card with a face photo near the chest is widely used as a method for proving the identity of a person working in an area where only a limited number of people can enter. An ID card with a face photo is convenient in that it can be confirmed by anyone and has excellent portability, but it has the following problems.

  For example, an ID card is generally a common type among people working in the same company, but the security level is within the company area where anyone working in the same company or any employee can enter. There are areas that are expensive and can only be entered by employees with specific duties, but not by regular employees. In areas with a high security level, ID card information recorded with magnetic information or the like is read to manage the locking at the area entrance. However, in the workplace where many people work, unlike railway ticket gates, many people pass through the entrance with one unlocking, and stick to the back of those who are registered to enter the area. If you try to pass through the entrance of the security management area, it is easy to get through. Once you enter the security management area, the ID card is a common type for people working in the same company as described above, so the management level of that person will not be apparent and security will be a problem. There are many.

  For example, a special ID card of a different color can be issued only to those who work in high-security areas, but it is fair to manage human resources for the same employees in the same company and office. There is a problem on one side, and since the security level of each individual frequently changes depending on the contents of work, it is very complicated and costly to reissue the ID card each time.

JP 2001-155202 A JP 2002-207975 A JP 2004-020596 A JP-A-9-319877 Japanese Patent Application No. 2003-193863

An object of the present invention is to provide an ID card with high security.
The object of the present invention is based on the above-mentioned problems of the prior art, and is apparently a common type in a low security area, and allowed to enter a high security area in a high security area. The purpose is to raise the security management level by providing an inexpensive method for identifying the difference between ID cards at a glance between a person and a person who is not allowed to enter a high security area.

And the said subject is solved by following (1)-( 7 ) of this invention.
( 1 ) " A security management system in which an illumination device for irradiating light of a specific wavelength to an ID card is installed at a gate for entering an area requiring security and / or an area requiring security, The ID card is used for identification purposes, and is always carried in an area requiring security and used as a name tag. A part or all of the card contains a photochromic compound whose color is changed by light irradiation of the specific wavelength, A security management system characterized in that the effectiveness varies depending on the security management category due to the difference in the mixing ratio when mixing the types of photochromic compounds or two or more types of photochromic compounds;
( 2 ) "The security management system according to ( 1 ), wherein the irradiation wavelength of the illumination device that emits light of the specific wavelength is different for each security management category"
( 3 ) " The security management system according to item (1) or (2) , wherein the photochromic compound is applied to an ID card surface";
( 4 ) "The security management system according to ( 3 ), wherein a substance that absorbs light of the specific wavelength is applied on the photochromic compound on the surface of the ID card ";
( 5 ) Any one of the items (1) to (4) , wherein the photochromic compound has a property of returning to a state before the color is changed by performing a restoration process. Or the security management system according to 1 ];
( 6 ) " The security management system according to (5) , wherein the restoration process is a heating process that applies heat of a specific temperature or higher";
( 7 ) “ The security management system according to item (5) , wherein the restoration process irradiates light having a specific wavelength different from the light irradiation of the specific wavelength”.

In the present invention, a part or all of the ID card contains a substance whose color changes by irradiation with light of a specific wavelength, and a light illumination device is provided in the entrance of the high security area or in the area. The security level of people in can be judged at a glance.
In the present invention, since the substance whose color is changed by light irradiation is applied to the surface of the ID card, it is possible to form or remove the substance applied to the surface as necessary, and one ID card Since the security level can be changed as necessary, a low-cost security system can be constructed.
In the present invention, since the substance whose color changes upon irradiation with light of a specific wavelength is a photochromic compound, the surface of the ID card can be colored with a simple light irradiation device such as a black light. It becomes possible to build. In addition, by using a photochromic compound, it is possible to return to the original decolored state by applying heat or irradiating light, and even an ID card that has been colored once can be reused as needed, and low-cost security It becomes possible to build a system.
The present invention is characterized in that a substance that absorbs light of a specific wavelength is applied to the surface of a substance that changes color when irradiated with light of a specific wavelength, thereby causing a color reaction by irradiation of light of a specific wavelength. Since the coloring of the material can be prevented, a low-cost security system can be constructed.
In the present invention, the substance that changes color by light irradiation of the specific wavelength has the property of returning to the state before the color changes by performing a specific treatment, so even if the color changes, Since the original characteristics can be restored, the ID car can be reused, so that a low-cost security system can be constructed.
In the present invention, finer security management can be realized by changing the type of photochromic compound to be applied and the wavelength of the ultraviolet light source installed in the security area for each security area.

The inventor of the present invention is characterized in that a part or all of the ID card contains a substance whose color changes by light irradiation of a specific wavelength. Further, as another feature of the present invention, the substance whose color changes by irradiation with light of the above specific wavelength has a characteristic of returning to the state before the color is changed by performing a specific process (restoration process). It is characterized by.
For example, a photochromic compound that develops color when ultraviolet light is applied to a part of the surface of the ID card is preferably applied only to the ID card of an employee permitted to enter a high security area. On the other hand, black lights that irradiate ultraviolet rays are installed at the entrance of a high-security area and at various places in the area.

  As a result, ultraviolet rays are not irradiated in areas with low security, so ID cards of employees who are allowed to enter areas with high security in areas with high security, even if they appear to be the same ID cards as ordinary employees. Since a specific part is colored, the difference from a general ID card can be seen by human eyes, and the security level of the person can be judged at a glance.

The above describes the method of distinguishing by coloring a specific part of the ID card surface of a high-security person. As another example, a photochromic compound that develops color when irradiated on part of the surface of the ID card is irradiated with ultraviolet rays. There is a method of applying an ultraviolet ray absorbing material that blocks ultraviolet rays on the photochromic compound on an ID card of an employee who is allowed to enter an area with high security after being applied to an ID card common to employees. According to this method, a general employee who is not allowed to enter a high security area will change part of the surface color of the ID card only when entering a high security area. Anyone knows that it is possible to raise the security level of the area.
Note that it is preferable to use a photochromic compound as a substance that develops color by ultraviolet rays because the photochromic compound can be returned to a decolored state by application of heat or irradiation of light absorbed by the developed photochromic compound.

By returning to the original state, the ID card can be reused even if the color is developed once, and a low-cost security system can be constructed.
Furthermore, finer security management can be realized by changing the type of photochromic compound to be applied and the wavelength of the ultraviolet light source installed in the security area for each security area.

  A configuration example of the present invention is shown in FIG. The ID card (1) includes an information area such as the person's name and affiliation, a face photograph area, and an area (2) coated with a photochromic compound.

  As the photochromic compound used in the present invention, examples of the yellow coloring compound include “2- [1- (3,5-dimethyl-4-isoxazolyl) ethylidene] -3-isopropylidene succinic anhydride”, “2- [ 1- (5-methyl-2-phenyl-4-oxazolyl) ethylidene] -3-isopropylidene succinic anhydride "," 2- [1- (2-phenyl-5-methyl-4-oxazolyl) stearylidene]- 3-isopropylidene succinic anhydride "and the like. The maximum absorption wavelength of these compounds in the colored state is about 430 nm to 460 nm. Examples of the magenta coloring compound include “2- [1- (2,5-dimethyl-1-phenylpyrazolyl) ethylidene] -3-isopropylidene succinic anhydride”, “2- [1- (3- Methoxy-5-methyl-1-phenyl-4-pyrazolyl) ethylidene] -3-isopropylidene succinic anhydride, “2- [1- (2-methyl-5-styryl-3-thienyl) ethylidene] -3- Isopropylidene succinic anhydride "and the like. The maximum absorption wavelength of these compounds in the colored state is about 550 nm to 560 nm.

Examples of cyan coloring compounds include “2- [1- (1,2,5-trimethyl-3-pyrrolyl) ethylidene] -3-isopropylidene succinic anhydride”, “2- [2,6- Dimethyl-3,5-bis (p-dimethylaminostyryl) benzylidene] -3-isopropylidene succinic anhydride ". The maximum absorption wavelength of these compounds in the colored state is about 640 nm.
These photochromic compounds may be used alone or in combination for the purpose of displaying the required color.

  The photochromic compound may be dispersed in a resin binder such as an acrylic resin, a vinyl chloride resin, a polyester resin, a polyamide resin, a polyolefin resin, or a urethane resin, or made of a material that transmits ultraviolet light. It may be enclosed in a microcapsule. The resin binder is preferably used in such an amount that it retains the strength of the coating film, does not significantly impair the ultraviolet transmittance, and does not significantly impair the infrared and far-infrared transmittance.

  Examples of ultraviolet absorbers that block ultraviolet rays include 2- (5-methyl-2-hydroxyphenyl) benzotriazole, 2- (3,5-di-t-butyl-2-hydroxyphenyl) benzotriazole, and indole series. The ultraviolet absorber may be a layer provided separately from the photochromic compound coating layer or may be present in the photochromic compound coating layer.

Example 1
2- [1- (5-Methyl-2-p-pyridyl-4-oxazolyl) ethylidene] isopropylidene succinic anhydride (hereinafter referred to as PC-Y), which is a photochromic compound exhibiting a yellow color, is formed on a part of the surface of the ID card. Abbreviated) and 2- [1- (2,5-dimethyl-3-thienyl) ethylidene] isopropylidene succinic anhydride (hereinafter abbreviated as PC-M) and polystyrene resin are 1: 1. After mixing at a weight ratio of 4: 4 and dissolving in toluene, a photochromic layer was formed to a thickness of 2 μm by a printing method. This sample is designated as sample 1.

(Example 2)
Sample 1 prepared in Example 1 was irradiated with ultraviolet light having a central wavelength of 380 nm at a light intensity of 1 mW / cm ² for 30 seconds. In sample 1, the portion where the photochromic layer was formed developed a red color, and the color change could be clearly confirmed visually.

(Example 3)
On the photochromic material coating layer of Sample 1 prepared in Example 1, BONASORB UA-3901 [hereinafter abbreviated as S1] manufactured by Orient Chemical Industry was formed to a thickness of 2 μm as an ultraviolet light shielding material by a coating process. This sample is designated as sample 2.

Example 4
Sample 2 prepared in Example 3 was irradiated with ultraviolet light having a central wavelength of 380 nm at a light intensity of 1 mW / cm ² for 30 seconds. In Sample 2, no change in the color of the photochromic material coating layer portion could be confirmed even by ultraviolet irradiation.

It is the figure which showed the structure in this invention.

Explanation of symbols

1 ID card 2 Application area

Claims (7)

A security management system in which an illumination device for irradiating light of a specific wavelength to an ID card is installed in an area requiring security and / or a gate for entering an area requiring security, wherein the ID card includes: It is intended for identity verification, and is always used as a name tag in an area requiring security. A part or all of the card contains a photochromic compound whose color is changed by light irradiation of the specific wavelength, and the type of the photochromic compound. Alternatively, the security management system is characterized in that the effectiveness differs for each security management category due to different mixing ratios when two or more kinds of photochromic compounds are mixed. The security management system according to claim 1 , wherein an irradiation wavelength of the illumination device that emits light of the specific wavelength is different for each security management category. The security management system according to claim 1 , wherein the photochromic compound is applied to an ID card surface . 4. The security management system according to claim 3 , wherein a substance that absorbs light of the specific wavelength is applied on the photochromic compound on the surface of the ID card . The security management system according to any one of claims 1 to 4, wherein the photochromic compound has a characteristic of returning to a state before the color is changed by performing a restoration process . The security management system according to claim 5, wherein the restoration process is a heating process that applies heat of a specific temperature or higher . The security management system according to claim 5, wherein the restoration process is to irradiate light having a specific wavelength different from the light irradiation having the specific wavelength .

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