JP2011039336A - Personal authentication medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a personal authentication medium having an excellent falsification-preventing function and having an easily truth-determining image. <P>SOLUTION: In the personal authentication medium which has at least a base material, a first personal authentication information display part color-displaying first personal authentication information, a second personal authentication information display part constituted of a plurality of cells each having a diffraction grating and displaying second personal authentication information, and an adhesive layer and a protective layer; the adhesive layer is layered on one surface of the base material; the first personal authentication display part and the second personal authentication information part are on the adhesive layer on the base material; and the protective layer is layered on the surface having at least one of the adhesive layer, the first personal authentication information display part, and the second personal authentication information display part. The first personal authentication information and second personal authentication information are selected from personal authentication information of the same person. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to an image forming body that prints, prints, and draws a face image and a fingerprint, which are personal identification points, on a booklet such as a passport or a visa, or a personal authentication medium such as a card. Personal identification information such as the owner's face and fingerprint image is identified by an examiner who makes forgery and tampering difficult by combining a diffraction grating or a cell with irregularities in a diffraction grating shape and performs personal authentication. The purpose is to make it easier.

Various information security methods have been proposed for information recording media related to personal authentication such as passports, visa stickers, and cards. For example, in a passport, according to what is called ICAO, a passport that is currently used must be readable by both visual and optical character identification methods (ICAO is an abbreviation for International Civil Aviation Organization). According to ICAO regulations, the materials and security used in passports are at the discretion of each country. The security functions commonly used are chemical reactants that react with organic solvents, iris pearl chips, Fiber (silk or synthetic fiber, visible or invisible, fluorescent or non-fluorescent), security thread for films printed with holograms or micro letters, paper with watermarks, fading ink, fluorescent ink, thermal ink, optical Incorporates various techniques such as various inks (such as so-called OVI), fine line printing, rainbow printing, intaglio printing, pixel printing, etc. to improve security and aesthetics at the same time.

In addition, a face photograph as visual confirmation information of a passport is a past photograph pasted together, but recently, there is a tendency to digitize the photograph information and reproduce it in a passport. As a method for reproducing images on a passport, thermal transfer recording method using a transfer ribbon using a sublimation dye (heat transferable dye), a resin-type melt type in which a pigment is dispersed, or a wax melt type, or an electrophotographic method is examined. Has been.

In addition to the above method, the image reproduction method to the passport includes a recording method using an ink jet printer (for example, see Patent Document 1), a laser printing recording method using a CO ₂ or YAG laser and a thermal color former (for example, Patent Document 1). 2), and further, laser engraving printing recording method (for example, see Patent Document 3) in which printing is also performed in the depth direction of the substrate using carbon present in the substrate.

Some visa stickers have been devised such as using ones with cuts in a certain pattern so that it is difficult to remove the sticker itself even if it is going to be peeled off.

Further, as an image display body containing this kind of personal recognition data, an image pattern formed based on the image data is provided on a card substrate such as polyvinyl chloride, or a hologram in addition to the image pattern. And those having so-called OVD images represented by images by using optical thin films using diffraction gratings or multilayer interference (effects such as color shift can be obtained by optical design) are known (OVD is , An abbreviation of Optical Variable Device).

These OVD techniques for holograms and diffraction gratings require advanced manufacturing techniques and are difficult to duplicate, and thus have been used for cards such as credit cards, ID cards, and prepaid cards as effective forgery prevention means. Furthermore, due to its high decorativeness, it is often used for packaging materials, books, pamphlets, POPs, and the like. As a means for sticking these OVDs to articles, a method of transferring and forming using a transfer foil has been conventionally employed. This type of transfer consists of a release layer, a relief layer on which a hologram or diffraction grating image pattern is formed on a support, a reflective layer formed by a well-known thin film forming means, and an adhesive layer. Things are known. These OVD patterns (holograms and diffraction grating patterns) engraved on the transfer foil are replicated in large quantities by the well-known method of copying a minute uneven pattern onto a nickel-based press plate and heating and pressing it onto a relief layer. Yes.

In addition, the reflective layer can be formed as a transparent hologram or a transparent diffraction grating by forming a transparent material having a different refractive index by a known thin film forming means such as a vacuum deposition method (hereinafter referred to as a transparent thin film layer). This is a known technique. In this case, it is clear from an optical point of view that the greater the difference in refractive index between the relief layer and the transparent thin film layer, the greater the reflectance. However, here in general,
(Refractive index of relief layer) <(Refractive index of transparent thin film layer)
There is a relationship.

The hologram or diffraction grating structure thus obtained is used as a means for preventing counterfeiting, such as credit cards, cash cards, membership cards, employee cards, prepaid cards, driver's licenses, gift cards, gift certificates, etc. In addition to various paper certificates such as stock certificates, various forms such as application forms, receipts, and copy slips, various booklets such as passports, passbooks, and pension notebooks, displays such as covers and panels such as books and notebooks, etc. It is used by sticking to a part or the whole. In addition, the whole described in the present invention has a conceptual meaning, regardless of a pattern, a pattern, or the like, a spot shape, a stripe shape, a thing stuck on a lattice, a regular shape, an irregular shape halftone dot Also included are those stuck with dots in the shape of a circle.

Such an OVD transfer foil performs a sufficient function as an anti-counterfeiting effect, but is formed by thermally transferring an OVD transfer layer on the image after forming an image such as a face photograph like a passport. At present, when the forgery technology has been developed, there is a possibility that the transfer layer is once removed by some method, the image data or the like is altered, and then the OVD transfer foil is placed again.

Also, considering the widespread use of printers such as a sublimation transfer method, a heat-melting transfer ribbon method, or an electrophotographic method as a means for forming image information such as a facial photograph, image formation is now considered. It is becoming difficult to say that it is always difficult to form a new image in the area after removing the portion.

In order to solve the above problems, a method of putting a plurality of pieces of information for identifying an individual in addition to a face photograph has been considered. There is a method of authenticating by putting digital watermark information in a face photo, storing the information in an IC chip in the same medium, and collating the digital watermark information with the information of the IC chip (for example, see Patent Document 4). ). Also, the feature points of the facial photo information are digitized, and the values are converted into a two-dimensional code and printed on the same medium. There is a method of authenticating by collating two-dimensional code data with feature points of a face photograph (see, for example, Patent Document 5).

However, the above-described method requires a dedicated decoder for reading a face photograph, an IC chip, and a two-dimensional code, and there is a problem that authentication cannot be performed by anyone other than the person who owns the reading device and the decoder.

As another verification method, a method of putting a plurality of face photographs that can be authenticated by visual information can be considered. In addition to the face photograph provided by the above method, there is a method of forming the same face photograph using a fluorescent material (see, for example, Patent Document 6, Patent Document 7, and Patent Document 8). Further, there is a method of forming a facial photograph by converting a pearl pigment into a melt-type thermal transfer ink ribbon (see, for example, Patent Document 9).

However, in the method using the fluorescent material, since it is necessary to use an ultraviolet lamp (black light), the scenes that can be authenticated are limited. On the other hand, a face photograph with a pearl pigment can be confirmed by visual observation, but since the particles of the pearl pigment are large, it is difficult to form a fine image, and there is a problem that only a supplementary authentication is possible.

JP 2002-226740 A JP 49-131142 A JP 2006-123174 A Japanese Patent Laid-Open No. 2001-126046 JP 2004-70532 A JP-A-7-125403 JP 2000-141863 A JP 2002-226740 A Japanese Patent Laid-Open No. 2003-170685

The present invention is an invention made in view of the problems of the prior art described above, and is forgery, falsification or falsification with respect to personal authentication media such as passports, visas or various cards that require high security. The purpose is to provide a personal identification and authentication medium that has anti-tampering performance and easy-to-find performance that can be easily found by observing suspected fraudulent products even if they are fraudulent. .

1st invention displays at least a base material, the 1st personal authentication information display part which color-displays 1st personal authentication information, and 2nd personal authentication information in a dot form by the several cell which consists of a diffraction grating. A second personal authentication information display unit; an adhesive layer; and a protective layer, wherein the adhesive layer is laminated on one surface of the substrate, and the first personal authentication information display unit and the A second personal authentication information display unit is disposed on the substrate, and further includes at least one of the adhesive layer, the first personal authentication information display unit, and the second personal authentication information display unit. A personal authentication medium in which layers are stacked, wherein the first personal authentication information and the second personal authentication information are selected from personal authentication information of the same person .
The second invention is composed of at least a base material, a first personal authentication information display unit for displaying the first personal authentication information in color, and a directional scattering layer having a diffusion function with a limited diffusion range of visible light. The second personal authentication information display unit for displaying the second personal authentication information, an adhesive layer and a protective layer, and the adhesive layer is laminated on one surface of the base material, and the adhesive layer is formed on the adhesive layer. The first personal authentication information display unit and the second personal authentication information display unit are disposed on the base material, and further among the adhesive layer, the first personal authentication information display unit, and the second personal authentication information display unit A personal authentication medium in which the protective layer is laminated on a surface having at least one or more, wherein the first personal authentication information and the second personal authentication information are selected from personal authentication information of the same person This is a personal authentication medium characterized by the above.
According to a third aspect of the present invention, at least a base material, a first personal authentication information display unit that displays the first personal authentication information in a colored manner, and a second personal authentication information that is displayed by diffracting or scattering external light. A personal authentication information display unit; an adhesive layer; and a protective layer, wherein the adhesive layer is laminated on one surface of the substrate, and the first personal authentication information display unit and the second layer are formed on the adhesive layer. A personal authentication information display unit is disposed on the substrate, and the protective layer is further provided on a surface having at least one of the adhesive layer, the first personal authentication information display unit, and the second personal authentication information display unit. A personal authentication medium in which the first personal authentication information and the second personal authentication information are selected from personal authentication information of the same person, and the first personal authentication information display unit and the second personal authentication medium are stacked. At least a part of the personal authentication information display part is stacked. It is the personal authentication medium characterized that.
4th invention displays the 1st personal authentication information display part which displays at least a base material, 1st personal authentication information in color, and 2nd personal authentication information by diffracting or scattering external light 2nd A personal authentication information display unit; an adhesive layer; and a protective layer, wherein the adhesive layer is laminated on one surface of the substrate, and the first personal authentication information display unit and the second layer are formed on the adhesive layer. A personal authentication information display unit is disposed on the substrate, and the protective layer is further provided on a surface having at least one of the adhesive layer, the first personal authentication information display unit, and the second personal authentication information display unit. A personal authentication medium in which the first personal authentication information and the second personal authentication information are selected from personal authentication information of the same person, and the first personal authentication information display unit and the second personal authentication medium are stacked. All personal authentication information display sections are stacked in layers. A personal authentication medium, characterized.
5th invention WHEREIN: 1st personal authentication information and 2nd personal authentication information are the single personal authentication information which belongs to the same person, The individual in any one of Claims 1-4 characterized by the above-mentioned. It is an authentication medium.
According to a sixth aspect of the present invention, the area of the first personal authentication information display unit is 0.1 to 30 times the area of the second personal authentication information display unit. The personal authentication medium according to any one of the above.
7th invention is a personal authentication medium in any one of Claims 1-6 with which the said 2nd personal authentication information display part has a visible ray transparent layer which permeate | transmits a visible ray.
The eighth invention is the personal authentication medium according to claim 7, wherein at least a part of the second personal authentication information display unit is laminated on the first personal authentication information display unit.
In a ninth aspect of the invention, the second personal authentication information display unit has at least a part of a visible light transmitting layer that transmits visible light and a high refractive index layer having a higher refractive index than the visible light transmitting layer. A personal authentication medium according to any one of claims 1 to 8.
The tenth invention is the personal authentication medium according to claim 9, wherein the high refractive index is selected from at least one of a metal, a metal oxide, an intermetallic compound, and a resin material, or a combination thereof. is there.
In an eleventh aspect of the present invention, the second personal authentication information display unit includes a visible light transmitting layer that transmits visible light and a reflective layer at least in part. It is a medium.
A twelfth invention is the personal authentication medium according to any one of claims 1 to 11, wherein the diffraction scattering layer that diffracts or scatters external light is on at least one part on the base material or on the first personal authentication information display part. The personal authentication medium is characterized in that it is laminated in at least one part.
A thirteenth aspect of the invention is the personal authentication medium according to claim 12, wherein the diffraction scattering layer has a visible light transmitting layer that transmits visible light.
The fourteenth invention is the personal authentication medium according to claim 13, wherein the diffraction scattering layer has a visible light transmissive layer that transmits visible light, and a high refractive index that has a higher refractive index than the visible light transmissive layer. A personal authentication medium having a layer at least partially.
A fifteenth aspect of the present invention is the personal authentication medium according to the fourteenth aspect, wherein the reflective layer is selected from at least one of a metal, a metal oxide, an intermetallic compound, and a resin material, or a combination thereof. Is a personal authentication medium.
A sixteenth aspect of the invention is the personal authentication medium according to claim 13, wherein the diffraction scattering layer includes a visible light transmitting layer that transmits visible light and a reflective layer at least in part. It is a medium.
In a seventeenth aspect, the cell has a plurality of types of gradation by changing any one of the shape, thickness, material, size, diffraction grating spatial frequency, diffraction grating direction, and diffraction grating angle of each cell. Select from the set cells, select the number and arrangement of each cell, the distance between each cell, etc. according to the purpose and purpose, and the personal authentication information to be displayed. The personal authentication medium according to claim 1, characterized in that it is a personal authentication medium.

According to the first invention, the first personal authentication information and the second personal authentication information are the same for an examiner who identifies whether the person who owns the personal authentication medium is a true owner. Since it is selected from the personal authentication information of the person, it is possible to easily identify the person by visually comparing the two images, so that it is possible to provide easy-to-find performance that can easily find the suspected fraudulent product. Also, a configuration of a personal authentication medium including a first personal authentication information display unit that is colored and a second personal authentication information display unit that displays the second personal authentication information in a dot shape by a plurality of cells made of a diffraction grating. Is more complicated than the conventional configuration, and in the case of dot-like display, since the diffraction grating can be reproduced from the personal authentication information from the image information data, the anti-counterfeiting effect is increased, making reproduction and tampering difficult. It became possible.
According to the second invention, the first personal authentication information and the second personal authentication information are the same for the examiner who identifies whether the person who owns the personal authentication medium is the true owner. Since it is selected from the personal authentication information of the person, it is possible to easily identify the person by visually comparing the two images, so that it is possible to provide easy-to-find performance that can easily find the suspected fraudulent product. In addition, the configuration of the personal authentication medium including the first personal authentication information display unit displayed in color and the second personal authentication information display unit having the directional scattering layer is more complicated than the configuration of the conventional personal authentication medium. As well as being less susceptible to light scattering due to the unevenness of the transfer medium, it is easier to make visual comparisons, so that it is possible to prevent forgery and make reproduction and tampering difficult. It was.
According to the third invention, the first personal authentication information and the second personal authentication information are the same for the examiner who identifies whether the person who owns the personal authentication medium is the true owner. Since it is selected from the personal authentication information of the person, it is possible to easily identify the person by visually comparing the two images, so that it is possible to provide easy-to-find performance that can easily find the suspected fraudulent product. Further, since the first personal authentication information display unit and the second personal authentication information display unit are stacked at least partially overlapping each other, it is possible to arrange the authentication information of both in the vicinity. And since the movement of the line of sight for confirming both personal authentication information can be reduced, the speed of authentication can also be increased. In addition, the configuration of the personal authentication medium in which at least a part of the first personal authentication information display unit and the second personal authentication information display unit that are displayed in color is overlapped and stacked is more complicated than the conventional configuration. The anti-counterfeiting effect has increased, making it difficult to reproduce and tamper.
According to the fourth invention, the first personal authentication information and the second personal authentication information are the same for the examiner who identifies whether the person who owns the personal authentication medium is the true owner. Since it is selected from the personal authentication information of the person, it is possible to easily identify the person by visually comparing the two images, so that it is possible to provide easy-to-find performance that can easily find the suspected fraudulent product. Furthermore, since all of the first personal authentication information display unit and the second personal authentication information display unit are overlapped and stacked, it is possible to place the authentication information of both closer together. And since the movement of the line of sight can be further reduced, the speed of authentication could be increased. In addition, the configuration of the personal authentication medium in which the first personal authentication information display unit and the second personal authentication information display unit, which are displayed in color, are overlapped and stacked is more complicated than the conventional configuration, thus preventing forgery. The effect has increased, making it difficult to reproduce and tamper.
According to the fifth invention, for the examiner who identifies whether the person who owns the personal authentication medium is the true owner, the first personal authentication information and the second personal authentication information are: Since it is a single personal authentication information belonging to the same person, not only forgery confirmation is further facilitated, but also security can be added to the personal authentication medium. In addition, since the configuration of the personal authentication medium is more complicated than the conventional configuration, the effect of preventing forgery is improved, making it difficult to reproduce and tamper.
According to the sixth invention, the area of the first personal authentication information display unit is 0.1 to 30 times the area of the second personal authentication information display unit, whereby the first personal authentication information display unit is displayed. Since the area of the unit and the second personal authentication information display unit can be changed according to the application, the two personal authentication information can be easily compared and authenticated. In addition, since it can be made more complicated than the configuration of the conventional personal authentication medium, the effect of preventing forgery can be improved, and reproduction and falsification can be made more difficult. On the other hand, if the area of the first personal authentication information display unit is smaller than 0.1 times the area of the second personal authentication information display unit, it becomes difficult to compare and authenticate the two personal authentication information. If it is larger than 30 times, it becomes difficult to compare and authenticate two pieces of personal authentication information.
According to the seventh invention, the second personal authentication information display unit has a visible light transmissive layer that transmits visible light, so that the pattern, design, image, and character information under the second personal authentication information display unit are displayed. Since it becomes possible to visually check other personal authentication information, it is possible not only to easily find suspected fraud products, but also to increase the effect of preventing counterfeiting, making reproduction and tampering even more difficult.
According to the eighth invention, since at least a part of the second personal authentication information display unit is laminated on the first personal authentication information display unit, the first personal authentication information, the second personal authentication information, Was able to perceive the distance. As a result, when the two pieces of personal authentication information are compared, the movement of the line of sight has been reduced, making it easier to compare the two pieces of personal authentication information and making it possible to easily find the suspected fraud. Further, since at least a part of the second personal authentication information display unit is stacked on the first personal authentication information display unit, the structure becomes complicated, so that the forgery prevention effect is improved, and reproduction and falsification are further performed. It became possible to make it difficult.
According to the ninth invention, the second personal authentication information display unit has a high refractive index layer having a refractive index higher than that of the visible light transmission layer at least in part, thereby complicating the structure. In addition, the second personal authentication information displayed on the second personal authentication information display unit can be displayed more accurately and finely. In this way, not only the suspected fraud can be easily found, but also the anti-counterfeiting effect has been improved, making it possible to make reproduction and tampering even more difficult.
According to the ninth invention, the high refractive index layer is selected from at least one of a metal, a metal oxide, a metal compound, and a resin material, or a combination thereof, so that the personal authentication medium can be flexibly used according to the purpose and application. It is possible not only to make the structure complicated, but also to display the second personal authentication information displayed on the second personal authentication information display section more accurately and finely. It becomes. In this way, not only the suspected fraud can be easily found, but also the anti-counterfeiting effect has been improved, making it possible to make reproduction and tampering even more difficult.
According to the eleventh aspect of the present invention, the second personal authentication information display unit has a visible light transmitting layer that transmits visible light and a reflective layer at least in part, so that the structure can be complicated. It becomes possible to display the 2nd personal authentication information displayed on 2 personal authentication information display parts more correctly and more finely. In this way, not only the suspected fraud can be easily found, but also the anti-counterfeiting effect has been improved, making it possible to make reproduction and tampering even more difficult.
According to the twelfth aspect of the present invention, the diffractive scattering layer that diffracts or scatters external light is laminated on at least one part on the base material or at least one part on the first personal authentication information display part. Since it has become more complicated than the structure of personal authentication media, the effect of preventing forgery has increased, making it possible to make reproduction and tampering even more difficult.
According to the thirteenth invention, the diffraction scattering layer has a visible light transmission layer that transmits visible light, so that various information displayed on the base material and the first personal authentication information display unit can be visually confirmed. Since the structure of the personal authentication medium can be complicated, the forgery prevention effect is improved, and it becomes possible to make reproduction and falsification more difficult.
According to the fourteenth aspect of the present invention, the diffraction scattering layer has a visible light transmissive layer that transmits visible light, and a high refractive index layer that has a higher refractive index than the visible light transmissive layer, at least in part. Since the structure of the personal authentication medium can be further complicated while the various information displayed on the material and the first personal authentication information display section can be visually confirmed, the forgery prevention effect is improved, and reproduction and alteration are further performed. It became possible to make it difficult.
According to the fifteenth aspect, by changing the material of the reflective layer, a personal authentication medium suitable for the application and purpose can be created, and personal authentication can be facilitated. In addition, since the structure of the personal authentication medium can be further complicated while the various information displayed on the base material and the first personal authentication information display unit can be visually confirmed, the anti-counterfeiting effect is improved and reproduced. Tampering can be made even more difficult.
According to the sixteenth invention, the diffraction / scattering layer has a visible light transmitting layer and a reflective layer that transmit visible light in at least a part thereof, and thereby various information displayed on the base material and the first personal authentication information display unit. Since the structure of the personal authentication medium can be further complicated while still being visually observable, the forgery prevention effect is improved, making it possible to make reproduction and tampering more difficult.
According to the seventeenth aspect, cells are selected from a plurality of types of gradations, and the number and arrangement of each cell, the distance between each cell, etc. are appropriately selected according to the purpose, purpose, and personal authentication information to be displayed. By arranging a plurality, it becomes possible to reproduce personal authentication information faithfully. Since the structure of the personal authentication medium can be further complicated, the effect of preventing forgery has been increased, and it has become possible to make reproduction and alteration more difficult.

It is the plane schematic explaining an example of the personal authentication medium of this invention. It is sectional drawing in the UU line | wire part of the personal authentication medium of FIG. It is the plane schematic explaining an example of the personal authentication medium of this invention. It is sectional drawing in the XX line part of the personal authentication medium of FIG. It is the plane schematic explaining an example of the personal authentication medium of this invention. It is sectional drawing in the YY line | wire part of the personal authentication medium of FIG. It is the plane schematic explaining an example of the personal authentication medium of this invention. It is sectional drawing in the ZZ line | wire part of the personal authentication medium of FIG. It is the schematic which showed the image acquisition method of personal identification information. It is sectional drawing explaining the layer structure in another aspect of a personal authentication medium.

(1) About the first invention The first invention in the present invention is the first person by displaying a visible image such as a face image, a fingerprint, a signature, etc. on the substrate as the first personal authentication information. An authentication information display unit is provided, and is a personal authentication medium having a second personal authentication display unit displaying personal authentication information of the same person as the personal authentication information displayed on the first personal authentication information display unit, (2) The first personal authentication information is provided by providing a plurality of cells made of diffraction gratings in the dot form in the personal authentication information display unit, so that visible image information can appear when a light source with a certain angle is irradiated. And the second personal authentication information can be authenticated.

  FIG. 1 is a schematic plan view showing an example of the personal authentication medium 1 of the first invention in the present invention. The personal authentication medium 1 includes a first personal authentication information display unit 12 that displays first personal authentication information on a base material 11, a second personal authentication information display unit 13 that displays second personal authentication information, and character information. Has been.

  This time, the first personal authentication information and the second personal authentication information use face images that are the personal authentication information of the same person, and the first personal authentication information display unit 12 and the second personal authentication information 13 respectively. Is displayed. Further, although not shown this time, other personal authentication information may be given in addition to the first personal authentication information display unit 12 and the second personal authentication information display unit 13. For example, character information such as names and numbers for authenticating individuals and numerical information may be displayed by performing various processes such as printing and printing on the base material, and an entry field is provided for entering the owner's signature. May be. Moreover, what is necessary is just to laminate | stack the information description layer in which various information was described suitably, and the method, a position, etc. are not specifically limited.

  In addition, the use of the personal authentication medium 1 is not necessarily limited as long as it is a medium in which a personal authentication information display unit including personal authentication information of the same person is formed on a base material, but security is required. To prove the identity of individuals such as passports, bankbooks, employee ID cards, student ID cards, etc., as images can be used as a material for determining whether or not the media is a legitimate owner (or user) The booklet used is mentioned. The booklet may be provided with a front cover, a back cover, and a plurality of pages so that information can be added later, such as entering information, printing, and pressing a size. Others include IC cards, contactless cards, hybrid cards, memory cards, rewrite cards, magnetic cards, etc. (or in terms of use) cash cards, credit cards, (card-like) licenses, (card-like) Passports, health insurance cards (in the form of cards), local government cards (such as national cards and prefectural cards), ID cards, members cards, etc.

  In FIG. 1, the first personal authentication information display unit 12 and the second personal authentication information display unit 13 use the same face photograph, but the first personal authentication information display unit 12 and the second personal authentication information display unit 13 are used. May use information of the same personal authentication information, and is preferably personal information that is personal information derived from the same person. The same person information is not limited to a face photograph, and the direction of the face is not particularly limited. It is sufficient to select at least one from ecological information such as fingerprints and veins, information that can be visually confirmed, such as numbers and character information such as date of birth and name, etc., and a combination thereof may be used. For example, the first personal authentication information display unit 12 may display a face photo and name from the front, and the second personal authentication information display unit 13 may have a combination of a side photo and date of birth. What is necessary is just to change suitably according to a use, the objective, the magnitude | size of a medium, etc.

The first personal authentication information display unit 12 may paste a photograph as the visual confirmation information, or may digitize the photograph information and reproduce it on a personal authentication medium. As a method for reproducing an image on the first personal authentication information display unit 12, a method of printing directly or on an image receiving layer on a substrate, an image receiving layer or the like on a transfer foil having a diffraction grating, After the information image is formed, an indirect transfer method in which the image is transferred onto a substrate can be employed. As a means for forming an information image at this time, a known image formation such as a silver salt method, a sublimation transfer method, a hot-melt transfer method, a resin pigment transfer method, an electrophotographic method, an ink jet method, or a printing method is used. Means can be used. Moreover, you may provide the primer layer for improving the adhesiveness of transfer foil on the base material which is a to-be-transferred body. In addition, if it is appropriately selected depending on the application and purpose such as sublimation (heat transferable) dye, thermal transfer recording method using transfer ribbon using resin-type melting type and wax melting type in which pigment is dispersed, or electrophotography good.
It is also possible to print directly on the substrate 11 as in the laser engraving method. In this case, since printing is also performed in black in the depth direction of the base material 11, falsification becomes very difficult.

  Although the size of the personal authentication medium 1 is not particularly limited, it is preferably a size that is easy to carry, such as an Olympics AD card (Accreditation Card approximately 95 × 150 mm, passport data page approximately 125 × 88 mm, A size of about 86 × 54 mm of a credit card is generally used.The size of the first personal authentication information display unit 12 for entering these sizes is easier to identify. Considering a balance such as putting information, it is generally 1/3 or less with respect to the medium size.

  About the size of the 1st personal authentication information display part 12 and the 2nd personal authentication information display part 13, as a ratio of the 1st personal authentication information display part 12 and the 2nd personal authentication information display part 13, 0.1: 1 thru | or A range of 30: 1 is preferred.

  For example, when a color face photo is inserted into the first personal authentication information display unit 12, the resolution of the face photo is generally expressed by a dot of 175 lines / inch. In general, even if the resolution is smaller than a halftone dot of 175 lines / inch, it cannot be discriminated visually. On the other hand, the plurality of cells made of the diffraction grating forming the second personal authentication information display unit 13 need to have a circle or square size of 5 μm at the minimum. When the second personal authentication information display unit 13 is formed with this smallest cell, the second personal authentication display having a size of 1/30 of the size of the first personal authentication information display unit 12 of 175 lines / inch. Part 13 is obtained. In the case of an image having a size of 1/30, it cannot be compared with the first personal authentication information display unit 12 unless viewed with a magnifying glass or the like. The required cell size becomes too small to obtain a sufficient function as a diffraction grating. Further, even if the smallest cell size (5 μm) that functions as a diffraction grating is used, an image having the same number of pixels as the first personal authentication information display unit 12 cannot be expressed. 12 and the second personal authentication information display unit 13 are difficult to compare.

  On the other hand, if the size of the second personal authentication information display unit 13 is 10 times larger than the size of the first personal authentication information display unit 12, the second personal authentication information display unit 13 is too large. Cannot be accurately reproduced, and image comparison between the first personal authentication information display unit 12 and the second personal authentication information display unit 13 becomes difficult.

  For this reason, the ratio of the first personal authentication information display unit 12 and the second personal authentication information display unit 13 is preferably in the range of 0.1: 1 to 30: 1. Image comparison between the information display unit 12 and the second personal authentication information display unit 13 becomes difficult, and the accuracy of personal identification decreases. Note that the sizes of the first personal authentication information display unit 12 and the second personal authentication information display unit 13 may be enlarged or reduced at the same vertical and horizontal ratios.

For the substrate 11, as the support, for example, various papers such as paper, coated paper, and synthetic paper (polypropylene, polystyrene, or a composite material obtained by bonding them with paper), vinyl chloride resin sheet, polyethylene terephthalate Examples include base films, transparent polyethylene terephthalate base films, various plastic films and sheets such as polyethylene naphthalate base films, films and sheets formed of various metals, films and sheets formed of various ceramics, and the like. it can.

The color of the base material 11 may be a single color or a combination of two or more colors, and there is no particular limitation such as having a pattern or a pattern, but the clarity of personal authentication information formed in a later process is not necessary. In order to increase the white pigment, it is preferable to add a white pigment such as titanium white, magnesium carbonate, zinc oxide, barium sulfate, silica, talc, clay, calcium carbonate and the like. The thickness of the support is usually 20 to 1000 μm, preferably 50 to 800 μm.

  2 is a cross-sectional view taken along the line U-U of the personal authentication medium 1 in FIG. As shown in FIG. 2A, the personal authentication medium 1 includes a base material 11, an adhesive layer 14, a first personal authentication information display unit 12, a second personal authentication information display unit 13, and a protective layer 16. FIG. 2B is an enlarged view of the second personal authentication information display unit as seen from the direction of visual authentication. The second personal authentication information display unit 13 is configured by arranging a plurality of cells made of diffraction gratings in a dot shape. The cross-sectional view in FIG. 2 shows an example of the present invention, and the order of the layer configuration of the adhesive layer 14, the first personal authentication information display unit 12, the cell 15, and the second personal authentication information display unit 13 is changed. May be.

  The adhesive layer 14 is for bonding and integrating the base material, the first personal authentication information display unit, the second personal authentication information display unit, and the protective layer. As a material for bonding them, thermoplastic resins such as vinyl chloride vinyl acetate copolymer, ethylene vinyl acetate copolymer, and polyester resin are usually used.

Further, the protective layer 16 is provided to protect the image of the personal authentication medium 1 from scratches and scratches, and to make the image recognition permanently accurate, and may be removed when it is not necessary.

The second personal authentication information display unit 13 for displaying the second personal authentication information in the present invention is displayed in a dot shape by a plurality of cells 15 made of a diffraction grating.
The cell 15 is composed of a diffraction grating, and the display image can be changed according to the observation angle by setting a plurality of gradations by controlling the direction, angle, brightness, etc., of diffracting external light. It is.
As diffraction grating parameters,
(1) Spatial frequency of diffraction grating (pitch of grating line: number of grating lines per unit length)
(2) Direction of diffraction grating (direction of grating line)
(3) Diffraction grating drawing area (arrangement of diffraction grating cells)
According to the above (1), the color at which the diffraction grating pattern appears shining with respect to a fixed point changes,
In accordance with (2) above, the direction in which the diffraction grating cell appears shining changes,
A display image (personal authentication information or the like) is determined in accordance with (3) above.
Directivity is obtained by arranging a plurality of cells made of diffraction gratings in a dot shape inside the second personal authentication information display unit 13 and forming a diffraction grating in which these parameters are changed for each cell (pixel). A display image having a certain gloss can be formed. In addition to the above, cells with multiple types of gradations are created by changing the shape, thickness, material, size, etc. of each cell, and each cell is used as appropriate according to the purpose, purpose, and personal authentication information to be displayed. It is also possible to select and arrange a plurality of pieces of personal authentication information.

The cells 15 are preferably arranged in the form of dots as shown in FIG. 2B, but the cells may be arranged in a matrix in a planar manner or randomly. Depending on the required pixels, the area on the visible surface side of each cell may be changed as appropriate.

The material used for the cell 15 is preferably a resin having good moldability, hardly causing unevenness, obtaining a bright reproduced image, and having good adhesion to the substrate, the protective layer, and the adhesive layer. For example, thermoplastic resins such as polyurethane resin, polycarbonate resin, polystyrene resin, polyvinyl chloride resin, unsaturated polyester resin, melamine resin, epoxy resin, urethane (meth) acrylate, polyol (meth) acrylate, melamine (meth) acrylate, triazine A thermosetting resin such as (meth) acrylate or a mixture thereof, or a thermoformable material having a radical polymerizable unsaturated group can be used, and a diffraction grating can be formed by other than the above. Any material having stability can be used. It is further preferable to use the above material as a visible light transmitting layer that transmits visible light.

The shape of the cell 15 is not particularly limited, but the shape on the visible surface side may be a cube made of a polygon such as a circle, an ellipse, a triangle or a quadrangle, or a cone or a quadrangular pyramid. The surface on the visible surface side may be smooth, or may have a curved surface, a convex structure or a concave structure, and may be selectively deformed or destroyed. What is necessary is just to select suitably in order to obtain a required gradation. Convex structure has a cylindrical shape, a conical shape, a polygonal pyramid shape such as a triangle, pentagon or hexagonal pyramid, a shape in which a cone is joined to a cylinder, or a shape in which a pyramid is joined to a prism. In addition, a hemisphere that is not strictly a semi-ellipsoid, such as a hemisphere, a semi-ellipsoid, a bullet, a bowl, or a semi-rugby ball, may be used. A concave structure such as a cone, a pyramid, or a spindle that has a concave structure may be formed, and a concave part such as a cylindrical cone, a prismatic pyramid, an elliptical cylindrical pyramid, a cylinder, or a prismatic cylinder is formed. Even if it is a thing, the function and effect similar to the said embodiment can be exhibited.

Regarding the thickness of the cell 15, a visible image can be reproduced when the thickness of the cell 15 is 0.1 to 2.0 μm. The thickness of a plurality of arranged cells may be uniform, or the thickness may be different for each cell. Even when the personal authentication medium 1 is provided as a transfer foil, it is very difficult to tamper with only the second personal authentication information display unit 13.

Regarding the distance between cells, if the distance between adjacent cells is too far, the personal authentication information cannot be displayed accurately. Therefore, it is preferable that adjacent cells be 300 μm or less. On the other hand, if the distance between the cells is too close, there is a possibility that interference nonuniformity or a visual defect may occur in the displayed personal authentication information. What is necessary is just to adjust suitably with the material of a cell.

  Moreover, in order to display the personal authentication information on the second personal authentication information display unit 13, it is necessary to make a diffraction grating appear. As the method, there is a method of providing a high refractive index layer in the cell 15. A diffraction grating can appear by providing a material having a refractive index higher than that of the visible light transmission layer. By using a material that transmits visible light as the material of the high refractive index layer, the first personal authentication information display unit 12 and the personal information image such as the name in the lower layer can be visually confirmed.

  The high refractive index layer is constituted by providing a single layer or a plurality of layers of metal oxide, intermetallic compound, resin material or metal oxide, intermetallic compound or resin material dispersed in resin material. Is done.

Specifically, the material used for the high refractive index layer is a transparent material having a higher refractive index than the material used for the cell, for example, Sb ₂ S ₃ , Fe ₂ O ₃ , TiO ₂ , CdS, CeO ₂ , ZnS. _{, PbCl 2, CdO, Sb 2} O 3, WO 3, SiO 2, Si 2 O 3, In 2 O 3, PbO, Ta 2 O 3, ZnO, ZrO 2, Cd 2 O 3, Al 2 O 3, Ge Inorganic materials such as can be used. Further, the transparent thin film layer may be formed by superposing a plurality of layers, or may be a multilayer film in which a combination of layers having different refractive indexes, a high refractive index layer and a low refractive index layer are alternately stacked.

Further, as a method for forming such a high refractive index layer, film forming means such as sputtering and ion plating can be applied in addition to vacuum deposition, and the film thickness is in the range of 10 nm to 1000 nm. Preferably there is. Further, the transparent thin film layer may be one in which a high refractive index powder such as TiO ₂ is dispersed in a resin or the like and the refractive index difference from the relief forming layer is 0.2 or more. In this case, since a coating film can be formed by a general coating method, it is not limited to the above film thickness.

As another method for causing the diffraction grating to appear in order to display the personal authentication information on the second personal authentication information display unit 13, there is a method of providing a reflective layer. As the reflective layer, a metal such as Al, Sn, Ni, Co, Cr, Fe, Ag, Au may be formed as a discontinuous thin film.

  When the diffraction grating is caused to appear using a reflective layer or a high refractive index layer, it is preferable that information under the second personal authentication information display unit 13 can be visually observed. Therefore, a method for visually confirming the personal authentication information such as the face and name displayed on the base material and the first personal authentication information display unit 12 under the diffraction grating of the second personal authentication information display unit 13 appears. As a method, there is a method in which the metallic gloss layer is made into a half mirror. For example, in the case of aluminum, when a layer having a film thickness of 20 nm to 40 nm is provided, it has a metallic luster depending on the angle, but the base appears to be transmitted at other angles. A layer for causing the diffraction gratings of the cell 15 and the second personal authentication information display unit 13 to appear may be provided by such a method.

  The metallic luster layer is demetalized as a method in which the diffraction grating of the second personal authentication information display unit 13 appears and the first personal authentication information display unit 12 and the personal information image such as the name in the lower layer can be visually confirmed. There is a way. The diffraction grating of the cell 15 and the second personal authentication information display unit 13 can be visually recognized by removing the metal of the metallic luster layer in the form of dots or lines, but at the same time, the first personal authentication information display unit in the lower layer is visible. 12 and personal information images such as names can also be confirmed visually.

  As a procedure for forming the personal authentication medium 1 of the first invention, for example, the following steps are performed.

A process of printing personal authentication information such as name, address, and birthday on paper is performed.
As a method for printing personal authentication information on at least one side of a base material, conventionally known intaglio printing, plate making techniques such as line printing, coloring, micro characters, etc. by offset printing, security printing such as fluorescent printing, OVI printing, etc. It may be printed with a pattern or a pattern, and may be provided with a combination of arbitrary security technologies.

  Next, a process of adding an adhesive layer to the paper material is performed. This time, an adhesive layer mainly composed of vinyl chloride vinyl acetate copolymer will be added. As a method for adding an adhesive layer to the substrate 11, a liquid adhesive material having the above components may be applied by a known printing method such as roll coating or screen printing, or adhesion on a film having the above components. The materials may be bonded together by a known method such as lamination.

  Subsequently, a step of creating a first personal authentication information display unit is performed. This time, a face image is taken with a camera and converted to digital data. An information image was formed on the image receiving layer provided on the transfer foil based on the digital data.

  As a method for creating the first personal authentication information section, printing is performed by directly or directly providing an image receiving layer on a substrate, an image receiving layer is provided on a transfer foil, and an information image is formed on the image receiving layer. After the transfer, an indirect transfer method in which the image is transferred onto a substrate can be employed. As a means for forming an information image at this time, a known image formation such as a silver salt method, a sublimation transfer method, a hot-melt transfer method, a resin pigment transfer method, an electrophotographic method, an ink jet method, or a printing method is used. Means can be used.

  Next, a step of creating a second personal authentication information display unit is performed. As a method for creating the second personal authentication information display unit, there is a method using an electron beam exposure apparatus.

  A diffraction grating pattern is drawn on the photosensitive resin applied on the substrate based on the digital data of the face photograph used in the first personal authentication information display unit. In the electron beam exposure apparatus, an electron beam irradiated from an electron gun is controlled by a computer to scan a PET substrate.

  The material used for the photosensitive resin is not particularly limited, but it is preferable to use a resin in which a thiazine sensitizing dye, a hexavalent chromium compound, and a water-soluble polymer are mixed. When this resin is used, not only can it be kept in a dissolved state of the sensitizing dye of the resin without drying in an ammonia atmosphere, but also the effect of improving the transmittance can be obtained.

  The PET substrate is placed on an XY stage with the photosensitive resin coating surface facing up. The electron beam emitted from the electron gun draws a diffraction grating pattern in units of dots. By moving the XY stage, a diffraction grating pattern is drawn one after another for each dot.

  After drawing, the photosensitive resin in the undrawn part is removed by development, washed with water, developed and dried. Then, a reflective layer or a refractive index layer is provided as a reflective layer thereon by a known method such as a vacuum deposition method, and a second personal authentication information portion displayed by arranging a plurality of dot-like diffraction grating patterns is provided. Formed.

  Next, a step of laminating the first personal authentication information display unit and the second personal authentication information display unit on the base material coated with the adhesive is performed. Since the first personal authentication information display part and the second personal authentication information display part are provided on the transfer foil, they are adhered to the base material 11 by hot stamping by a hot stamp method, and then the base film is removed and laminated. It was.

Furthermore, the process of laminating a protective layer is performed. An adhesive layer, a first personal authentication information display unit, and a second personal authentication information display unit are stacked on the base material, and a protective layer mainly composed of an acrylic resin is added this time. As a method for adding a protective layer, a liquid material having the above components may be applied by a known printing method such as roll coating or screen printing, or a protective layer on a film having the above components may be laminated. You may bond together by a well-known method.

About 2nd invention 2nd invention in this invention displays 1st personal authentication information display by color-displaying visible images, such as a face image, a fingerprint, a signature, etc. as 1st personal authentication information on a base material. And a second personal authentication medium having a second personal authentication display unit that displays personal authentication information of the same person as the personal authentication information displayed on the first personal authentication information display unit. By providing a directional scattering layer in the information display unit, visible image information can appear when a light source with a certain angle is irradiated, so the first personal authentication information and the second personal authentication information are compared. By doing so, it can be authenticated.

  FIG. 3 is a schematic plan view showing an example of the personal authentication medium 2 of the first invention in the present invention. The personal authentication medium 2 includes a first personal authentication information display unit 22 that displays first personal authentication information on a base material 21, a second personal authentication information display unit 23 that displays second personal authentication information, and character information. Has been.

  This time, the first personal authentication information and the second personal authentication information use face images that are personal authentication information of the same person, and the first personal authentication information display unit 22 and the second personal authentication information 13 respectively. Is displayed. Further, although not shown this time, in addition to the first personal authentication information display unit 22 and the second personal authentication information display unit 23, other personal authentication information may be given. For example, character information such as names and numbers for authenticating individuals and numerical information may be displayed by performing various processes such as printing and printing on the base material, and an entry field is provided for entering the owner's signature. May be. Moreover, what is necessary is just to laminate | stack the information description layer in which various information was described suitably, and the method, a position, etc. are not specifically limited.

  In addition, the use of the personal authentication medium 2 is not necessarily limited as long as it is a medium in which a personal authentication information display unit including personal authentication information of the same person is formed on a base material, but security is required. To prove the identity of individuals such as passports, bankbooks, employee ID cards, student ID cards, etc., as images can be used as a material for determining whether or not the media is a legitimate owner (or user) The booklet used is mentioned. The booklet may be provided with a front cover, a back cover, and a plurality of pages so that information can be added later, such as entering information, printing, and pressing a size. Others include IC cards, contactless cards, hybrid cards, memory cards, rewrite cards, magnetic cards, etc. (or in terms of use) cash cards, credit cards, (card-like) licenses, (card-like) Passports, health insurance cards (in the form of cards), local government cards (such as national cards and prefectural cards), ID cards, members cards, etc.

  In FIG. 3, the first personal authentication information display unit 22 and the second personal authentication information display unit 23 use the same face photograph, but the first personal authentication information display unit 22 and the second personal authentication information display unit 23 are the same. May use information of the same personal authentication information, and is preferably personal information that is personal information derived from the same person. The same person information is not limited to a face photograph, and the direction of the face is not particularly limited. It is sufficient to select at least one from ecological information such as fingerprints and veins, information that can be visually confirmed, such as numbers and character information such as date of birth and name, etc., and a combination thereof may be used. For example, the first personal authentication information display unit 22 may display a face photograph and name from the front, and the second personal authentication information display unit 23 may combine the face photograph from the side and the date of birth. What is necessary is just to change suitably according to a use, the objective, the magnitude | size of a medium, etc.

The first personal authentication information display unit 22 may paste a photograph as the visual confirmation information, or may digitize the photograph information and reproduce it on a personal authentication medium. As an image reproduction method on the first personal authentication information display unit 22, a method of printing directly or on an image receiving layer on a substrate, an image receiving layer or the like on a transfer foil having a diffraction grating, and the image receiving layer on the image receiving layer After the information image is formed, an indirect transfer method in which the image is transferred onto a substrate can be employed. As a means for forming an information image at this time, a known image formation such as a silver salt method, a sublimation transfer method, a hot-melt transfer method, a resin pigment transfer method, an electrophotographic method, an ink jet method, or a printing method is used. Means can be used. Moreover, you may provide the primer layer for improving the adhesiveness of transfer foil on the base material which is a to-be-transferred body. In addition, if it is appropriately selected depending on the application and purpose such as sublimation (heat transferable) dye, thermal transfer recording method using transfer ribbon using resin-type melting type and wax melting type in which pigment is dispersed, or electrophotography good.
Further, it is possible to print directly on the substrate 21 as in the laser engraving method. In this case, since printing is also performed in black in the depth direction of the base material 21, tampering becomes very difficult.

  The size of the personal authentication medium 2 is not particularly limited, but is preferably a size that is easy to carry, such as an Olympic card or the like (Accreditation Card approximately 95 × 150 mm, passport data page approximately 125 × 88 mm, A size of about 86 × 54 mm of a credit card is generally used.The size of the first personal authentication information display unit 22 for entering these sizes is easier to identify. Considering a balance such as putting information, it is generally 1/3 or less with respect to the medium size.

  About the size of the 1st personal authentication information display part 22 and the 2nd personal authentication information display part 23, as a ratio of the 1st personal authentication information display part 22 and the 2nd personal authentication information display part 23, 0.1: 1 thru | or A range of 30: 1 is preferred.

  For example, when a color face photograph is inserted into the first personal authentication information display unit 22, it is generally expressed by a halftone dot of 175 lines / inch as the resolution of the face photograph. In general, even if the resolution is smaller than a halftone dot of 175 lines / inch, it cannot be discriminated visually. On the other hand, the plurality of cells made of the diffraction grating forming the second personal authentication information display unit 23 need to have a circle or square size of 5 μm at the minimum. When the second personal authentication information display unit 23 is formed with this smallest cell, the second personal authentication display having a size of 1/30 of the size of the first personal authentication information display unit 22 of 175 lines / inch. Part 23 is obtained. In the case of an image of 1/30 size, it cannot be compared with the first personal authentication information display unit 22 unless it is viewed with a magnifying glass or the like. However, if the image is smaller than this, the second personal authentication information display unit 23 The required cell size becomes too small to obtain a sufficient function as a diffraction grating. Further, even if the smallest cell size (5 μm) that functions as a diffraction grating is used, an image having the same number of pixels as the first personal authentication information display unit 22 cannot be expressed. 22 and the second personal authentication information display unit 23 are difficult to compare.

  On the other hand, when the size of the second personal authentication information display unit 23 is 10 times larger than the size of the first personal authentication information display unit 22, the second personal authentication information display unit 23 is too large. Cannot be accurately reproduced, and image comparison between the first personal authentication information display unit 22 and the second personal authentication information display unit 23 becomes difficult.

  Therefore, the ratio of the first personal authentication information display unit 22 and the second personal authentication information display unit 23 is preferably in the range of 0.1: 1 to 30: 1. Image comparison between the information display unit 22 and the second personal authentication information display unit 23 becomes difficult, and the accuracy of personal identification decreases. Note that the sizes of the first personal authentication information display unit 22 and the second personal authentication information display unit 23 may be enlarged or reduced at the same vertical / horizontal ratio.

For the base material 21, as the support, for example, papers, coated papers, various papers such as synthetic papers (polypropylene, polystyrene, or composite materials obtained by bonding them with paper), vinyl chloride resin sheets, polyethylene terephthalate, etc. Examples include base films, transparent polyethylene terephthalate base films, various plastic films and sheets such as polyethylene naphthalate base films, films and sheets formed of various metals, films and sheets formed of various ceramics, and the like. it can.

The color of the base material 21 may be a single color or a combination of two or more colors, and there is no particular limitation such as having a pattern or a pattern, but the clarity of personal authentication information formed in a later process is not necessary. In order to increase the white pigment, it is preferable to add a white pigment such as titanium white, magnesium carbonate, zinc oxide, barium sulfate, silica, talc, clay, calcium carbonate and the like. The thickness of the support is usually 20 to 1000 μm, preferably 50 to 800 μm.

  FIG. 4 is a cross-sectional view taken along line XX of the personal authentication medium 2 of FIG. As shown in FIG. 4A, the personal authentication medium 2 includes a base material 21, an adhesive layer 24, a first personal authentication information display unit 22, a second personal authentication information display unit 23, and a protective layer 26. As shown in FIG. 4B, the second personal authentication information display unit 23 is configured by arranging a directional scattering layer 25 having a diffusion function in which a visible light diffusion range is limited. The cross-sectional view in FIG. 4 shows an example of the present invention, and the order of the layer configuration of the adhesive layer 24, the first personal authentication information display unit 22, and the second personal authentication information display unit 23 may be changed. .

  The adhesive layer 24 is for bonding and integrating the base material, the first personal authentication information display unit, the second personal authentication information display unit, and the protective layer. As a material for bonding them, thermoplastic resins such as vinyl chloride vinyl acetate copolymer, ethylene vinyl acetate copolymer, and polyester resin are usually used.

The protective layer 26 is provided in order to protect the image of the personal authentication medium 2 from scratches and scratches and to make the image recognition permanently accurate, and may be removed if not necessary.

  The second personal authentication information display unit 23 for displaying the second personal authentication information in the second invention is composed of a directional scattering layer 25 having a diffusion function in which a visible light diffusion range is limited. The directional scattering layer 25 is characterized by reflecting only light incident from a specific direction and scattering light incident from other directions. By irradiating the personal authentication medium 2 with a directional light source, the appearance of the second personal authentication information display unit 23 makes it possible to easily compare the images of both, thereby further improving the personal identification accuracy.

  The material used for the directional scattering layer 25 is preferably a resin that has good moldability, is less likely to cause unevenness, provides a bright reproduced image, and has good adhesion to the substrate, the protective layer, and the adhesive layer. For example, thermoplastic resins such as polyurethane resin, polycarbonate resin, polystyrene resin, polyvinyl chloride resin, unsaturated polyester resin, melamine resin, epoxy resin, urethane (meth) acrylate, polyol (meth) acrylate, melamine (meth) acrylate, triazine A thermosetting resin such as (meth) acrylate or a mixture thereof, or a thermoformable material having a radical polymerizable unsaturated group can be used, and a diffraction grating can be formed by other than the above. Any material having stability can be used. It is further preferable to use the above material as a visible light transmitting layer that transmits visible light.

  The shape of the directional scattering layer 25 is not particularly limited, but the shape on the visible surface side of the directional scattering layer 25 may be a cube formed of a polygon such as a circle, an ellipse, a triangle, or a rectangle, or a cone or a quadrangular pyramid. The surface on the visible surface side may be smooth, or may have a curved surface, a convex structure or a concave structure, and may be selectively deformed or destroyed. What is necessary is just to select suitably in order to obtain a required gradation. Convex structure has a cylindrical shape, a conical shape, a polygonal pyramid shape such as a triangle, pentagon or hexagonal pyramid, a shape in which a cone is joined to a cylinder, or a shape in which a pyramid is joined to a prism. In addition, a hemisphere that is not strictly a semi-ellipsoid, such as a hemisphere, a semi-ellipsoid, a bullet, a bowl, or a semi-rugby ball, may be used. A concave structure such as a cone, a pyramid, or a spindle that has a concave structure may be formed, and a concave part such as a cylindrical cone, a prismatic pyramid, an elliptical cylindrical pyramid, a cylinder, or a prismatic cylinder is formed. Even if it is a thing, the function and effect similar to the said embodiment can be exhibited. The directional scattering layer 25 may be in the form of a sheet or a dot, and may be appropriately changed depending on the purpose and application.

  Regarding the thickness of the directional scattering layer 25, a visible image can be reproduced when the thickness of the directional scattering layer 25 is 0.1 to 2.0 μm. The thickness of a plurality of arranged cells may be uniform, or the thickness may be different for each cell. Even when the personal authentication medium 2 is provided as a transfer foil, it is very difficult to tamper with only the second personal authentication information display unit 23.

  Regarding the distance between cells, if the distance between adjacent cells is too far, the personal authentication information cannot be displayed accurately. Therefore, it is preferable that adjacent cells be 300 μm or less. On the other hand, if the distance between the cells is too close, there is a possibility that interference nonuniformity or a visual defect may occur in the displayed personal authentication information. What is necessary is just to adjust suitably with the material of a cell.

  Further, in order to display the personal authentication information on the second personal authentication information display unit 23, it is necessary to cause directional scattering to appear. As a method therefor, there is a method of providing a high refractive index layer in the directional scattering layer 25. By providing a material having a refractive index higher than that of the visible light transmission layer, directional scattering can appear. By using a material that transmits visible light as the material of the high refractive index layer, the first personal authentication information display unit 22 and the personal information image such as the name in the lower layer can be visually confirmed.

  The high refractive index layer is constituted by providing a single layer or a plurality of layers of metal oxide, intermetallic compound, resin material or metal oxide, intermetallic compound or resin material dispersed in resin material. Is done.

Specifically, the material used for the high refractive index layer is a transparent material having a higher refractive index than the material used for the cell, for example, Sb ₂ S ₃ , Fe ₂ O ₃ , TiO ₂ , CdS, CeO ₂ , ZnS. _{, PbCl 2, CdO, Sb 2} O 3, WO 3, SiO 2, Si 2 O 3, In 2 O 3, PbO, Ta 2 O 3, ZnO, ZrO 2, Cd 2 O 3, Al 2 O 3, Ge Inorganic materials such as can be used. Further, the transparent thin film layer may be formed by superposing a plurality of layers, or may be a multilayer film in which a combination of layers having different refractive indexes, a high refractive index layer and a low refractive index layer are alternately stacked.

  Further, as a method for forming such a high refractive index layer, film forming means such as sputtering and ion plating can be applied in addition to vacuum deposition, and the film thickness is in the range of 10 nm to 1000 nm. Preferably there is. Further, as the transparent thin film layer, a high refractive index powder such as TiO2 may be dispersed in a resin or the like so that the refractive index difference from the relief forming layer is 0.2 or more. In this case, since a coating film can be formed by a general coating method, it is not limited to the above film thickness.

  As another method for causing directional scattering to appear in order to display the personal authentication information on the second personal authentication information display unit 23, there is a method of providing a reflective layer. As the reflective layer, a metal such as Al, Sn, Ni, Co, Cr, Fe, Ag, Au may be formed as a discontinuous thin film.

  When directivity scattering is caused to appear using a reflective layer or a high refractive index layer, information under the second personal authentication information display unit 23 is preferably visible. Therefore, a method for visually confirming the personal authentication information such as the face and name displayed on the base material and the first personal authentication information display unit 22 under the diffraction grating of the second personal authentication information display unit 23 appears. As a method, there is a method in which the metallic gloss layer is made into a half mirror. For example, in the case of aluminum, when a layer having a film thickness of 20 nm to 40 nm is provided, it has a metallic luster depending on the angle, but the base appears to be transmitted at other angles. The directivity scattering layer 25 and the layer that causes the directivity scattering of the second personal authentication information display unit 23 to appear may be provided by such a method.

  The metallic luster layer is demetalized as a method of causing the directivity scattering of the second personal authentication information display unit 23 to appear and visually confirming the first personal authentication information display unit 22 and the personal information image such as the name in the lower layer. There is a way to do it. By removing the metal of the metallic luster layer in the form of dots or lines, the directional scattering of the directional scattering layer 25 and the second personal authentication information display unit 23 can be visually recognized, but at the same time, the first individual in the lower layer The authentication information display unit 22 and personal information images such as names can also be confirmed visually.

  In this case, when the second personal authentication information display unit 23 having the directional scattering layer 25 is provided below the first personal authentication information display unit 22, the first personal authentication information display unit 22 and other personal authentications such as names are provided. The first personal authentication information display unit 22 and a personal information image such as a name are provided in the upper layer of the directional scattering layer 25 because the information cannot be visually confirmed.

  As a procedure for forming the personal authentication medium 2 of the second invention, for example, the following steps are performed.

  A process of printing personal authentication information such as name, address, and birthday on paper is performed. As a method of printing personal authentication information on at least one side of the substrate, conventionally known intaglio printing, fluorescent printing, OVI printing, security printing such as pearl chip, pattern printing, etc. may be applied. It is possible to provide a combination of security technologies.

  Next, a step of adding an adhesive layer to the substrate is performed. This time, an adhesive layer mainly composed of vinyl chloride vinyl acetate copolymer will be added. As a method for adding an adhesive layer to the substrate 21, a liquid adhesive material having the above components may be applied by a known printing method such as roll coating or screen printing, or adhesion on a film having the above components. The materials may be bonded together by a known method such as laminating.

  Subsequently, a step of creating a first personal authentication information display unit is performed. This time, a face image is taken with a camera and converted to digital data. An information image was formed on the image receiving layer provided on the transfer foil based on the digital data. As a method for creating the first personal authentication information section, printing is performed by directly or directly providing an image receiving layer on a substrate, an image receiving layer is provided on a transfer foil, and an information image is formed on the image receiving layer. After the transfer, an indirect transfer method in which the image is transferred onto a substrate can be employed. As a means for forming an information image at this time, a known image formation such as a silver salt method, a sublimation transfer method, a hot-melt transfer method, a resin pigment transfer method, an electrophotographic method, an ink jet method, or a printing method is used. Means can be used.

  Next, a step of creating a second personal authentication information display unit is performed. As a method for creating the second personal authentication information display unit, there is a method using an electron beam exposure apparatus.

  Based on the digital data of the facial photograph used in the first personal authentication information display unit, a directional scattering pattern is formed on the photosensitive resin applied on the substrate to scatter external light. In the electron beam exposure apparatus, an electron beam irradiated from an electron gun is controlled by a computer to scan a PET substrate.

  The material used for the photosensitive resin is not particularly limited, but it is preferable to use a resin in which a thiazine sensitizing dye, a hexavalent chromium compound, and a water-soluble polymer are mixed. When this resin is used, not only can it be kept in a dissolved state of the sensitizing dye of the resin without drying in an ammonia atmosphere, but also the effect of improving the transmittance can be obtained.

  The PET substrate is placed on an XY stage with the photosensitive resin coating surface facing up. The electron beam emitted from the electron gun draws a diffraction grating pattern in units of dots. By moving the XY stage, a diffraction grating pattern is drawn one after another for each dot.

  After drawing, the photosensitive resin in the undrawn part is removed by development, washed with water, developed and dried. Then, as a reflective layer, a reflective layer or a refractive index layer is provided as a reflective layer by a known method such as a vacuum vapor deposition method, and the second individual is displayed by a directional scattering pattern that is formed of irregularities and scatters external light. An authentication information display unit was formed. A second personal authentication information part was formed thereon by providing about 100 nm of aluminum as a reflective layer by vacuum deposition.

  Next, a step of laminating the first personal authentication information display unit and the second personal authentication information display unit on the base material coated with the adhesive is performed. Since the first personal authentication information display part and the second personal authentication information display part are provided on the transfer foil, they are adhered to the base material 21 by hot pressing by the hot stamp method, and then the base film is removed and laminated. It was.

Furthermore, the process of laminating a protective layer is performed.
An adhesive layer, a first personal authentication information display unit, and a second personal authentication information display unit are stacked on the base material, and a protective layer mainly composed of an acrylic resin is added this time. As a method for adding a protective layer, a liquid material having the above components may be applied by a known printing method such as roll coating or screen printing, or a protective layer on a film having the above components may be laminated. You may bond together by a well-known method.

About 3rd invention The 3rd invention in this invention is the 1st personal authentication information display by displaying the image of a face image, a fingerprint, a signature, etc. as a 1st personal authentication information on the base material so that it can be visually displayed. And a second personal authentication medium having a second personal authentication display unit that displays personal authentication information of the same person as the personal authentication information displayed on the first personal authentication information display unit. The information display unit displays the second personal authentication information by diffracting or scattering outside light, and the first personal authentication information can be displayed when visible image information can appear when a light source with a certain angle is irradiated. And the second personal authentication information can be authenticated. In addition, since at least a part of the first personal authentication information display unit and the second personal authentication information display unit are overlapped and stacked, the movement of the line of sight when comparing the information of both is reduced, so that the determination is easy. Furthermore, since the structure is further complicated, the effect of preventing forgery is improved, making it difficult to reproduce and tamper.

  FIG. 5 is a schematic plan view showing an example of the personal authentication medium 3 of the first invention in the present invention. The personal authentication medium 3 includes a first personal authentication information display unit 32 that displays first personal authentication information on a base material 31, a second personal authentication information display unit 33 that displays second personal authentication information, and character information. Has been.

  This time, the first personal authentication information and the second personal authentication information use face images that are the personal authentication information of the same person, and the first personal authentication information display unit 32 and the second personal authentication information 13 respectively. Is displayed. In addition, although not shown this time, other personal authentication information may be given in addition to the first personal authentication information display unit 32 and the second personal authentication information display unit 33. For example, character information such as names and numbers for authenticating individuals and numerical information may be displayed by performing various processes such as printing and printing on the base material, and an entry field is provided for entering the owner's signature. May be. Moreover, what is necessary is just to laminate | stack the information description layer in which various information was described suitably, and the method, a position, etc. are not specifically limited.

  In addition, the use of the personal authentication medium 3 is not necessarily limited as long as it is a medium in which a personal authentication information display unit including personal authentication information of the same person is formed on a base material, but security is required. Since an image can be used as a material for determining whether or not the media is a legitimate owner (or user), it is suitable for the present invention. For example, a booklet used to prove an individual's identity, such as a passport, bankbook, employee ID card, or student ID card. The booklet may be provided with a front cover, a back cover, and a plurality of pages so that information can be added later, such as entering information, printing, and pressing a size. Others include IC cards, contactless cards, hybrid cards, memory cards, rewrite cards, magnetic cards, etc. (or in terms of use) cash cards, credit cards, (card-like) licenses, (card-like) Passports, health insurance cards (in the form of cards), local government cards (such as national cards and prefectural cards), ID cards, members cards, etc.

  In FIG. 5, the first personal authentication information display unit 32 and the second personal authentication information display unit 33 use the same face photograph, but the first personal authentication information display unit 32 and the second personal authentication information display unit 33 are used. May use information of the same personal authentication information, and is preferably personal information that is personal information derived from the same person. The same person information is not limited to a face photograph, and the direction of the face is not particularly limited. It is sufficient to select at least one from ecological information such as fingerprints and veins, information that can be visually confirmed, such as numbers and character information such as date of birth and name, etc., and a combination thereof may be used. For example, the first personal authentication information display unit 32 may display a face photo and name from the front, and the second personal authentication information display unit 33 may combine the face photo and date of birth from the side. What is necessary is just to change suitably according to a use, the objective, the magnitude | size of a medium, etc.

The first personal authentication information display unit 32 may paste a photo as the visual confirmation information, or may digitize the photo information and reproduce it on a personal authentication medium. As an image reproduction method on the first personal authentication information display unit 32, a method of printing directly or on an image receiving layer on a substrate, an image receiving layer or the like on a transfer foil having a diffraction grating, and the image receiving layer on the image receiving layer After the information image is formed, an indirect transfer method in which the image is transferred onto a substrate can be employed. As a means for forming an information image at this time, a known image formation such as a silver salt method, a sublimation transfer method, a hot-melt transfer method, a resin pigment transfer method, an electrophotographic method, an ink jet method, or a printing method is used. Means can be used. Moreover, you may provide the primer layer for improving the adhesiveness of transfer foil on the base material which is a to-be-transferred body. In addition, if it is appropriately selected depending on the application and purpose such as sublimation (heat transferable) dye, thermal transfer recording method using transfer ribbon using resin-type melting type and wax melting type in which pigment is dispersed, or electrophotography good.
Moreover, it can also print directly on the base material 31 like the laser engraving method. In this case, since printing is also performed in black in the depth direction of the base material 31, falsification becomes very difficult.

  The size of the personal authentication medium 3 is not particularly limited, but is preferably a size that is easy to carry, such as an Olympic card or other AD card (Accreditation Card approximately 95 × 150 mm, passport data page approximately 125 × 88 mm, A size of about 86 × 54 mm of a credit card is generally used.The size of the first personal authentication information display unit 32 to be included in these sizes is easier to identify. Considering a balance such as putting information, it is generally 1/3 or less with respect to the medium size.

  About the size of the 1st personal authentication information display part 32 and the 2nd personal authentication information display part 33, as a ratio of the 1st personal authentication information display part 32 and the 2nd personal authentication information display part 33, 0.1: 1 thru | or A range of 30: 1 is preferred.

  For example, when a color face photograph is inserted into the first personal authentication information display section 32, the face photograph resolution is generally expressed by a dot of 175 lines / inch. In general, even if the resolution is smaller than a halftone dot of 175 lines / inch, it cannot be discriminated visually. On the other hand, the plurality of cells made of the diffraction grating forming the second personal authentication information display unit 33 needs to have a circle or square size of 5 μm at the minimum. When the second personal authentication information display unit 33 is formed with the smallest cell, the second personal authentication display having a size of 1/30 of the size of the first personal authentication information display unit 32 of 175 lines / inch. Part 33 is obtained. In the case of an image of 1/30 size, it cannot be compared with the first personal authentication information display unit 32 unless viewed with a magnifying glass or the like. However, if the image is smaller than this, the second personal authentication information display unit 33 The required cell size becomes too small to obtain a sufficient function as a diffraction grating. Further, even if the smallest cell size (5 μm) that functions as a diffraction grating is used, an image having the same number of pixels as the first personal authentication information display unit 32 cannot be expressed. 32 and the second personal authentication information display unit 33 are difficult to compare images.

  On the other hand, if the second personal authentication information display unit 33 is 10 times larger than the size of the first personal authentication information display unit 32, the second personal authentication information display unit 33 is too large. Cannot be accurately reproduced, and image comparison between the first personal authentication information display unit 32 and the second personal authentication information display unit 33 becomes difficult.

  Therefore, the ratio of the first personal authentication information display unit 32 and the second personal authentication information display unit 33 is preferably in the range of 0.1: 1 to 30: 1. Image comparison between the information display unit 32 and the second personal authentication information display unit 33 becomes difficult, and the accuracy of personal identification is reduced. Note that the sizes of the first personal authentication information display unit 32 and the second personal authentication information display unit 33 may be enlarged or reduced at the same vertical and horizontal ratios.

  For the base material 31, as the support, for example, various papers such as paper, coated paper, and synthetic paper (polypropylene, polystyrene, or a composite material obtained by bonding them with paper), vinyl chloride resin sheet, polyethylene terephthalate Examples include base films, transparent polyethylene terephthalate base films, various plastic films and sheets such as polyethylene naphthalate base films, films and sheets formed of various metals, films and sheets formed of various ceramics, and the like. it can.

  The color of the base material 31 may be a single color or a combination of two or more colors, and there is no particular limitation such as having a pattern or a pattern, but the clarity of personal authentication information formed in a later process In order to increase the white pigment, it is preferable to add a white pigment such as titanium white, magnesium carbonate, zinc oxide, barium sulfate, silica, talc, clay, calcium carbonate and the like. The thickness of the support is usually 20 to 1000 μm, preferably 50 to 800 μm.

  FIG. 6 is a cross-sectional view taken along the line YY of the personal authentication medium 3 in FIG. As shown in FIG. 6A, the personal authentication medium 3 includes a base material 31, an adhesive layer 34, a first personal authentication information display unit 32, a second personal authentication information display unit 33, and a protective layer 36. As shown in FIG. 6B, the second personal authentication information display unit 33 displays the second personal authentication information by diffracting or scattering external light. Further, at least a part of the first personal authentication information display unit 32 and the second personal authentication information display unit 33 are displayed so as to overlap each other.

  In the third invention, at least a part of the first personal authentication information display unit 32 and the second personal authentication information display unit 33 overlap, and both the first personal authentication information and the second personal authentication information are visually confirmed. It is preferable that both can be compared.

  When the second personal authentication information display unit 33 is provided below the first personal authentication information display unit 32, the second personal authentication information display unit 33 cannot be viewed by the first personal authentication information display unit 32 or other personal authentication information such as a name. Therefore, it is preferable that the second personal authentication information display unit 33 is stacked on the first personal authentication information display unit 32, and the second personal authentication information display unit 33 is a visible light transmitting layer that transmits visible light. The cross-sectional view in FIG. 6 shows an example of the present invention. If the first personal authentication information and the second personal authentication information can be visually compared, The order of the layer configuration of the 1 personal authentication information display unit 32, the cell 25, and the second personal authentication information display unit 33 may be changed.

  The adhesive layer 34 is for bonding and integrating the base material, the first personal authentication information display unit, the second personal authentication information display unit, and the protective layer. As a material for bonding them, thermoplastic resins such as vinyl chloride vinyl acetate copolymer, ethylene vinyl acetate copolymer, and polyester resin are usually used.

  Further, the protective layer 36 is provided to protect the image of the personal authentication medium 3 from scratches and scratches and to make the image recognition permanently accurate, and may be removed when it is not necessary.

  The second personal authentication information display unit 33 in the third invention only needs to be able to display the second personal authentication information by diffracting or scattering external light, and the second personal authentication display unit includes the first invention and the second The second personal authentication information display unit used in this invention may be used, and the second personal authentication information may be displayed using other known diffraction gratings, holograms, and techniques related to directional scattering.

  The material used for the second personal authentication information display unit 33 is preferably a resin that has good moldability, is less likely to cause unevenness, provides a bright reproduced image, and has good adhesion to the substrate, the protective layer, and the adhesive layer. More preferably, a material that transmits visible light is preferable. For example, thermoplastic resins such as polyurethane resin, polycarbonate resin, polystyrene resin, polyvinyl chloride resin, unsaturated polyester resin, melamine resin, epoxy resin, urethane (meth) acrylate, polyol (meth) acrylate, melamine (meth) acrylate, triazine Thermosetting resins such as (meth) acrylates or mixtures thereof, and thermoformable materials having radically polymerizable unsaturated groups can be used, and diffraction gratings and the like can be formed using other than the above. Any material having excellent stability can be used.

  The shape of the second personal authentication information display unit 33 is not particularly limited as long as it can diffract or scatter external light. For example, the shape on the visible surface side is a cube formed of a polygon such as a circle, an ellipse, a triangle, a quadrangle, or the like. A cone or a quadrangular pyramid may be used. The surface on the visible surface side may be smooth, or may have a curved surface, a convex structure or a concave structure, and may be selectively deformed or destroyed. What is necessary is just to select suitably in order to obtain a required gradation. Convex structure has a cylindrical shape, a conical shape, a polygonal pyramid shape such as a triangle, pentagon or hexagonal pyramid, a shape in which a cone is joined to a cylinder, or a shape in which a pyramid is joined to a prism. In addition, a hemisphere that is not strictly a semi-ellipsoid, such as a hemisphere, a semi-ellipsoid, a bullet, a bowl, or a semi-rugby ball, may be used. It may have a concave structure such as a cone, a pyramid, or a spindle that has a concave structure, and a concave portion such as a cylindrical cone, a prismatic pyramid, an elliptical cylindrical pyramid, a cylinder, or a prismatic cylinder is formed. Even if it is a thing, the function and effect similar to the said embodiment can be exhibited.

  About the thickness of the 2nd personal authentication information display part 33, 0.1-2.0 micrometers is preferable. If it is 0.1 μm or less, it becomes difficult to create the second personal authentication information display unit 33, and if it is 2.0 μm or more, the smoothness of the personal authentication medium 3 deteriorates due to the thickness of the second personal authentication information display unit 33. It is because it ends up.

  Further, in order to display the personal authentication information on the second personal authentication information display unit 33, it is necessary to cause diffraction or scattering to appear. As the method, there is a method of providing a high refractive index layer in the second personal authentication information display unit 33. By using a material that transmits visible light as the material of the high refractive index layer, the first personal authentication information display unit 32 and the personal information image such as the name in the lower layer can be visually confirmed. By providing a material having a refractive index higher than that of the visible light transmission layer, directional scattering can appear.

  The high refractive index layer is constituted by providing a single layer or a plurality of layers of metal oxide, intermetallic compound, resin material or metal oxide, intermetallic compound or resin material dispersed in resin material. Is done.

Specifically, the material used for the high refractive index layer is a transparent material having a higher refractive index than the material used for the cell, for example, Sb ₂ S ₃ , Fe ₂ O ₃ , TiO ₂ , CdS, CeO ₂ , ZnS. _{, PbCl 2, CdO, Sb 2} O 3, WO 3, SiO 2, Si 2 O 3, In 2 O 3, PbO, Ta 2 O 3, ZnO, ZrO 2, Cd 2 O 3, Al 2 O 3, Ge Inorganic materials such as can be used. Further, the transparent thin film layer may be formed by superposing a plurality of layers, or may be a multilayer film in which a combination of layers having different refractive indexes, a high refractive index layer and a low refractive index layer are alternately stacked.

Further, as a method for forming such a high refractive index layer, film forming means such as sputtering and ion plating can be applied in addition to vacuum deposition, and the film thickness is in the range of 10 nm to 1000 nm. Preferably there is. Further, the transparent thin film layer may be one in which a high refractive index powder such as TiO ₂ is dispersed in a resin or the like and the refractive index difference from the relief forming layer is 0.2 or more. In this case, since a coating film can be formed by a general coating method, it is not limited to the above film thickness.

  In addition, in order to display personal authentication information on the second personal authentication information display unit 33, there is a method of providing a reflective layer as another method of causing diffraction and scattering to appear. As the reflective layer, a metal such as Al, Sn, Ni, Co, Cr, Fe, Ag, Au may be formed as a discontinuous thin film.

  When diffraction or scattering is caused to appear using a reflective layer or a high refractive index layer, it is necessary to prevent the information under the second personal authentication information display unit 23 from becoming invisible. Therefore, a method for visually confirming the personal authentication information such as the face and name displayed on the base material and the first personal authentication information display unit 22 under the diffraction grating of the second personal authentication information display unit 23 appears. As a method, there is a method in which the metallic gloss layer is made into a half mirror. For example, in the case of aluminum, when a layer having a film thickness of 20 nm to 40 nm is provided, it has a metallic luster depending on the angle, but the base appears to be transmitted at other angles. You may provide the layer which makes the 2nd personal identification information display part 33 appear diffraction or scattering by such a method.

  As a method of causing diffraction or scattering of the second personal authentication information display unit 33 to appear and visually confirming the personal information image such as the first personal authentication information display unit 32 and the name in the lower layer, the metal gloss layer is demetalized. There is a way to do it. By removing the metal of the metallic luster layer in the form of dots or lines, the diffraction or scattering of the second personal authentication information display unit 23 can be visually recognized. At the same time, the first personal authentication information display unit 22 and You can also visually check personal information images such as names.

  Further, as a procedure for forming the personal authentication medium 3 of the third invention, for example, the following steps are performed. For the method of creating the second personal authentication information display unit 33, a known technique may be used. In the step of laminating the first personal authentication information display unit and the second personal authentication information display unit on a base material coated with an adhesive, Except for the step of laminating at least a part of the second personal authentication information display unit on the first personal authentication display unit, the same processes and materials as those of the first invention and the second invention may be selected as appropriate.

A process of printing personal authentication information such as name, address, and birthday on paper is performed.
As a method of printing personal authentication information on at least one side of the substrate, conventionally known intaglio printing, fluorescent printing, OVI printing, security printing such as pearl chip, pattern printing, etc. may be applied. It is possible to provide a combination of security technologies.

  Next, a process of adding an adhesive layer to the paper material is performed. This time, an adhesive layer mainly composed of vinyl chloride vinyl acetate copolymer will be added. As a method for adding an adhesive layer to the substrate 21, a liquid adhesive material having the above components may be applied by a known printing method such as roll coating or screen printing, or adhesion on a film having the above components. The materials may be bonded together by a known method such as laminating.

  Subsequently, a step of creating a first personal authentication information display unit is performed. This time, a face image is taken with a camera and converted to digital data. An information image was formed on the image receiving layer provided on the transfer foil based on the digital data. As a method for creating the first personal authentication information section, printing is performed by directly or directly providing an image receiving layer on a substrate, an image receiving layer is provided on a transfer foil, and an information image is formed on the image receiving layer. After the transfer, an indirect transfer method in which the image is transferred onto a substrate can be employed. As a means for forming an information image at this time, a known image formation such as a silver salt method, a sublimation transfer method, a hot-melt transfer method, a resin pigment transfer method, an electrophotographic method, an ink jet method, or a printing method is used. Means can be used.

  Next, a step of creating a second personal authentication information display unit is performed. As a method for creating the second personal authentication information display unit, there is a method using an electron beam exposure apparatus.

  A diffraction grating pattern is drawn on the photosensitive resin applied on the substrate based on the digital data of the face photograph used in the first personal authentication information display unit. In the electron beam exposure apparatus, an electron beam irradiated from an electron gun is controlled by a computer to scan a PET substrate.

  The material used for the photosensitive resin is not particularly limited, but it is preferable to use a resin in which a thiazine sensitizing dye, a hexavalent chromium compound, and a water-soluble polymer are mixed. When this resin is used, not only can it be kept in a dissolved state of the sensitizing dye of the resin without drying in an ammonia atmosphere, but also the effect of improving the transmittance can be obtained.

  The PET substrate is placed on an XY stage with the photosensitive resin coating surface facing up. The electron beam emitted from the electron gun draws a diffraction grating pattern in units of dots. By moving the XY stage, a diffraction grating pattern is drawn one after another for each dot.

  After drawing, the photosensitive resin in the undrawn part is removed by development, washed with water, developed and dried. Then, a reflective layer or a refractive index layer is provided as a reflective layer thereon by a known method such as a vacuum deposition method, and a second personal authentication information portion displayed by arranging a plurality of dot-like diffraction grating patterns is provided. Formed. This time, as a method of creating the second personal authentication information part, the second personal authentication information part was produced by the method described in "Example" of JP-A-2-72320. Here, as a photosensitive material used as a dry plate, for example, a holographic sensitizer disclosed in JP-A-5-11474 was provided on a PET film with a transfer layer as a base material, and exposure, washing and development were performed. On top of that, about 100 nm of ZnS was provided as a high refractive index layer by vacuum deposition to form a second personal authentication information part.

  Next, a step of laminating the first personal authentication information display unit and the second personal authentication information display unit on the base material coated with the adhesive is performed. Since the first personal authentication information display part and the second personal authentication information display part are provided on the transfer foil, they are adhered to the base material 31 by hot stamping by a hot stamp method, and then the base film is removed and laminated. It was.

  Furthermore, the process of laminating a protective layer is performed. The adhesive layer, the first personal authentication information display unit, and the second personal authentication information display unit are laminated on the base material, and a protective layer mainly composed of an acrylic resin is added this time. As a method for adding a protective layer, a liquid material having the above components may be applied by a known printing method such as roll coating or screen printing, or a protective layer on a film having the above components may be laminated. You may bond together by a well-known method.

About 4th invention 4th invention in this invention is the 1st personal authentication information display by carrying out the color display which can visually recognize the image of a face image, a fingerprint, a signature, etc. as 1st personal authentication information on a base material. And a second personal authentication medium having a second personal authentication display unit that displays personal authentication information of the same person as the personal authentication information displayed on the first personal authentication information display unit. The information display unit displays the second personal authentication information by diffracting or scattering outside light, and the first personal authentication information can be displayed when visible image information can appear when a light source with a certain angle is irradiated. And the second personal authentication information can be authenticated. In addition, since all of the first personal authentication information display unit and the second personal authentication information display unit are overlapped and stacked, the movement of the line of sight when comparing the information of the two is further reduced, so that the determination is easy. Furthermore, since the structure is complicated, the effect of preventing forgery is improved, making it difficult to reproduce and tamper.

  FIG. 7 is a schematic plan view showing an example of the personal authentication medium 4 of the first invention in the present invention. The personal authentication medium 4 includes a first personal authentication information display unit 42 that displays first personal authentication information on a base material 41, a second personal authentication information display unit 43 that displays second personal authentication information, and character information. Has been.

  This time, the first personal authentication information and the second personal authentication information use face images which are the personal authentication information of the same person, and the first personal authentication information display unit 42 and the second personal authentication information 13 respectively. Is displayed. Further, although not shown this time, other personal authentication information may be given in addition to the first personal authentication information display unit 42 and the second personal authentication information display unit 43. For example, character information such as names and numbers for authenticating individuals and numerical information may be displayed by performing various processes such as printing and printing on the base material, and an entry field is provided for entering the owner's signature. May be. Moreover, what is necessary is just to laminate | stack the information description layer in which various information was described suitably, and the method, a position, etc. are not specifically limited.

  The use of the personal authentication medium 4 is not necessarily limited as long as it is a medium in which a personal authentication information display unit including personal authentication information of the same person is formed on a base material, but security is required. Since an image can be used as a material for determining whether or not the media is a legitimate owner (or user), it is suitable for the present invention. For example, a booklet used to prove an individual's identity, such as a passport, bankbook, employee ID card, or student ID card. The booklet may be provided with a front cover, a back cover, and a plurality of pages so that information can be added later, such as entering information, printing, and pressing a size. Others include IC cards, contactless cards, hybrid cards, memory cards, rewrite cards, magnetic cards, etc. (or in terms of use) cash cards, credit cards, (card-like) licenses, (card-like) Passports, health insurance cards (in the form of cards), local government cards (such as national cards and prefectural cards), ID cards, members cards, etc.

  In FIG. 7, the first personal authentication information display unit 42 and the second personal authentication information display unit 43 use the same face photograph, but the first personal authentication information display unit 42 and the second personal authentication information display unit 43. May use information of the same personal authentication information, and is preferably personal information that is personal information derived from the same person. The same person information is not limited to a face photograph, and the direction of the face is not particularly limited. It is sufficient to select at least one from ecological information such as fingerprints and veins, information that can be visually confirmed, such as numbers and character information such as date of birth and name, etc., and a combination thereof may be used. For example, the first personal authentication information display unit 42 may display a face photo and name from the front, and the second personal authentication information display unit 43 may be a combination of a side photo and date of birth. What is necessary is just to change suitably according to a use, the objective, the magnitude | size of a medium, etc.

  The first personal authentication information display unit 42 may paste a photo as the visual confirmation information, digitize the photo information, and reproduce it on a personal authentication medium. As a method for reproducing an image on the first personal authentication information display unit 42, a method of printing directly or on an image receiving layer on a substrate, an image receiving layer or the like on a transfer foil having a diffraction grating, After the information image is formed, an indirect transfer method in which the image is transferred onto a substrate can be employed. As a means for forming an information image at this time, a known image formation such as a silver salt method, a sublimation transfer method, a hot-melt transfer method, a resin pigment transfer method, an electrophotographic method, an ink jet method, or a printing method is used. Means can be used. Moreover, you may provide the primer layer for improving the adhesiveness of transfer foil on the base material which is a to-be-transferred body. In addition, if it is appropriately selected depending on the application and purpose such as sublimation (heat transferable) dye, thermal transfer recording method using transfer ribbon using resin-type melting type and wax melting type in which pigment is dispersed, or electrophotography good. It is also possible to print directly on the substrate 41 as in the laser engraving method. In this case, since printing is also performed in black in the depth direction of the base material 41, tampering becomes very difficult.

  The size of the personal authentication medium 4 is not particularly limited, but is preferably a size that is easy to carry, such as an Olympic card or other AD card (Accreditation Card approximately 95 × 150 mm, passport data page approximately 125 × 88 mm, A size of about 86 × 54 mm of a credit card is generally used.The size of the first personal authentication information display section 42 for entering these sizes is easier to identify. Considering a balance such as putting information, it is generally 1/3 or less with respect to the medium size.

  About the size of the 1st personal authentication information display part 42 and the 2nd personal authentication information display part 43, as a ratio of the 1st personal authentication information display part 42 and the 2nd personal authentication information display part 43, 1: 1 is preferable. If the first personal authentication information display unit 42 and the second personal authentication information display unit 43 having the same size are stacked at the same position in the upper and lower directions, it becomes easy to compare detailed shapes and information, and more accurate authentication is possible. Note that the sizes of the first personal authentication information display unit 42 and the second personal authentication information display unit 43 may be enlarged or reduced at the same vertical and horizontal ratios. What is necessary is just to select the magnitude | size suitably according to the magnitude | size of the personal authentication medium 4 to be used, the objective, and a use.

  For the base material 41, as a support, for example, various papers such as paper, coated paper, and synthetic paper (polypropylene, polystyrene, or a composite material obtained by combining them with paper), vinyl chloride resin sheet, polyethylene terephthalate Examples include base films, transparent polyethylene terephthalate base films, various plastic films and sheets such as polyethylene naphthalate base films, films and sheets formed of various metals, films and sheets formed of various ceramics, and the like. it can.

  The color of the base material 41 may be a single color or a combination of two or more colors, and there is no particular limitation such as having a pattern or a pattern, but the clarity of personal authentication information formed in a later process is not necessary. In order to increase the white pigment, it is preferable to add a white pigment such as titanium white, magnesium carbonate, zinc oxide, barium sulfate, silica, talc, clay, calcium carbonate and the like. The thickness of the support is usually 20 to 1000 μm, preferably 50 to 800 μm.

  FIG. 8 is a cross-sectional view taken along the line YY of the personal authentication medium 4 of FIG. As shown in FIG. 8A, the personal authentication medium 4 includes a base material 41, an adhesive layer 44, a first personal authentication information display unit 42, a second personal authentication information display unit 43, and a protective layer 46. As shown in FIG. 8B, the second personal authentication information display unit 43 displays the second personal authentication information by diffracting or scattering external light. Furthermore, the first personal authentication information display unit 42 and the second personal authentication information display unit 43 are all displayed in an overlapping manner.

  In the fourth invention, the first personal authentication information display unit 42 and the second personal authentication information display unit 43 all overlap, and both the first personal authentication information and the second personal authentication information can be visually confirmed. Furthermore, it must be possible to compare the two.

  When the second personal authentication information display unit 43 is provided below the first personal authentication information display unit 42, the second personal authentication information display unit 43 cannot be viewed by the first personal authentication information display unit 42 or other personal authentication information such as a name. Therefore, it is preferable that the second personal authentication information display unit 43 is laminated on the first personal authentication information display unit 42, and the second personal authentication information display unit 43 is a visible light transmitting layer that transmits visible light. Note that the cross-sectional view in FIG. 8 shows an example of the present invention. If the first personal authentication information and the second personal authentication information can be visually compared, The order of the layer configuration of the 1 personal authentication information display unit 42, the cell 25, and the second personal authentication information display unit 43 may be changed.

  The adhesive layer 44 adheres and integrates the base material, the first personal authentication information display unit, the second personal authentication information display unit, and the protective layer. As a material for bonding them, thermoplastic resins such as vinyl chloride vinyl acetate copolymer, ethylene vinyl acetate copolymer, and polyester resin are usually used.

  Further, the protective layer 46 is provided to protect the image of the personal authentication medium 4 from scratches and scratches and to make the image recognition permanently accurate, and may be removed if not necessary.

  The second personal authentication information display unit 33 in the fourth invention only needs to be able to display the second personal authentication information by diffracting or scattering external light, and the second personal authentication display unit includes the first invention and the second The second personal authentication information display unit used in this invention may be used, and the second personal authentication information may be displayed using other known diffraction gratings, holograms, and techniques related to directional scattering.

  The material used for the second personal authentication information display unit 43 is preferably a resin that has good moldability, is less likely to cause unevenness, provides a bright reproduced image, and has good adhesion to the substrate, the protective layer, and the adhesive layer. More preferably, a material that transmits visible light is preferable. For example, thermoplastic resins such as polyurethane resin, polycarbonate resin, polystyrene resin, polyvinyl chloride resin, unsaturated polyester resin, melamine resin, epoxy resin, urethane (meth) acrylate, polyol (meth) acrylate, melamine (meth) acrylate, triazine Thermosetting resins such as (meth) acrylates or mixtures thereof, and thermoformable materials having radically polymerizable unsaturated groups can be used, and diffraction gratings and the like can be formed using other than the above. Any material having excellent stability can be used.

  The shape of the second personal authentication information display unit 43 is not particularly limited as long as it can diffract or scatter external light. For example, the shape on the visible surface side is a cube formed of a polygon such as a circle, an ellipse, a triangle, or a quadrangle. A cone or a quadrangular pyramid may be used. The surface on the visible surface side may be smooth, or may have a curved surface, a convex structure or a concave structure, and may be selectively deformed or destroyed. What is necessary is just to select suitably in order to obtain a required gradation. Convex structure has a cylindrical shape, a conical shape, a polygonal pyramid shape such as a triangle, pentagon or hexagonal pyramid, a shape in which a cone is joined to a cylinder, or a shape in which a pyramid is joined to a prism. In addition, a hemisphere that is not strictly a semi-ellipsoid, such as a hemisphere, a semi-ellipsoid, a bullet, a bowl, or a semi-rugby ball, may be used. It may have a concave structure such as a cone, a pyramid, or a spindle that has a concave structure, and a concave portion such as a cylindrical cone, a prismatic pyramid, an elliptical cylindrical pyramid, a cylinder, or a prismatic cylinder is formed. Even if it is a thing, the function and effect similar to the said embodiment can be exhibited.

  About the thickness of the 2nd personal authentication information display part 43, 0.1-2.0 micrometers is preferable. If it is 0.1 μm or less, it becomes difficult to create the second personal authentication information display unit 43, and if it is 2.0 μm or more, the smoothness of the personal authentication medium 4 deteriorates due to the thickness of the second personal authentication information display unit 43. It is because it ends up.

  Further, in order to display the personal authentication information on the second personal authentication information display unit 43, it is necessary to cause diffraction or scattering to appear. As the method, there is a method of providing a high refractive index layer in the second personal authentication information display unit 43. By using a material that transmits visible light as the material of the high refractive index layer, the first personal authentication information display unit 22 and the personal information image such as the name in the lower layer can be visually confirmed.

  The high refractive index layer is constituted by providing a single layer or a plurality of layers of metal oxide, intermetallic compound, resin material or metal oxide, intermetallic compound or resin material dispersed in resin material. Is done.

Specifically, the material used for the high refractive index layer is a transparent material having a higher refractive index than the material used for the cell, for example, Sb ₂ S ₃ , Fe ₂ O ₃ , TiO ₂ , CdS, CeO ₂ , ZnS. _{, PbCl 2, CdO, Sb 2} O 3, WO 3, SiO 2, Si 2 O 3, In 2 O 3, PbO, Ta 2 O 3, ZnO, ZrO 2, Cd 2 O 3, Al 2 O 3, Ge Inorganic materials such as can be used. Further, the transparent thin film layer may be formed by superposing a plurality of layers, or may be a multilayer film in which a combination of layers having different refractive indexes, a high refractive index layer and a low refractive index layer are alternately stacked.

Further, as a method for forming such a high refractive index layer, film forming means such as sputtering and ion plating can be applied in addition to vacuum deposition, and the film thickness is in the range of 10 nm to 1000 nm. Preferably there is. Further, the transparent thin film layer may be one in which a high refractive index powder such as TiO ₂ is dispersed in a resin or the like and the refractive index difference from the relief forming layer is 0.2 or more. In this case, since a coating film can be formed by a general coating method, it is not limited to the above film thickness.

  In addition, in order to display the personal authentication information on the second personal authentication information display unit 43, there is a method of providing a reflective layer as another method of causing diffraction or scattering to appear. As the reflective layer, a metal such as Al, Sn, Ni, Co, Cr, Fe, Ag, Au may be formed as a discontinuous thin film.

  When diffraction or scattering is caused to appear using a reflective layer or a high refractive index layer, it is necessary to prevent the information under the second personal authentication information display unit 23 from becoming invisible. Therefore, a method for visually confirming the personal authentication information such as the face and name displayed on the base material and the first personal authentication information display unit 22 under the diffraction grating of the second personal authentication information display unit 23 appears. As a method, there is a method in which the metallic gloss layer is made into a half mirror. For example, in the case of aluminum, when a layer having a film thickness of 20 nm to 40 nm is provided, it has a metallic luster depending on the angle, but the base appears to be transmitted at other angles. A layer that causes diffraction or scattering of the second personal authentication information display unit 43 may be provided by such a method.

  As a method of causing diffraction or scattering of the second personal authentication information display unit 43 to appear and visually confirming the personal information image such as the first personal authentication information display unit 42 and the name in the lower layer, the metal gloss layer is demetalized. There is a way to do it. By removing the metal of the metallic luster layer in the form of dots or lines, the diffraction or scattering of the second personal authentication information display unit 23 can be visually recognized. At the same time, the first personal authentication information display unit 22 and You can also visually check personal information images such as names.

  Further, as a procedure for forming the personal authentication medium 4 of the fourth invention, for example, the following steps are performed. As a method for creating the second personal authentication information display unit 43, a known technique may be used. In addition to the other steps, the first personal authentication information display unit and the second personal authentication information display are provided on a base material coated with an adhesive. In the step of laminating the parts, the same steps and materials as in the first invention and the second invention are appropriately selected except for the step of laminating at least a part of the second personal authentication information display unit on the first personal authentication display unit do it.

  A process of printing personal authentication information such as name, address, and birthday on paper is performed. As a method of printing personal authentication information on at least one side of the substrate, conventionally known intaglio printing, fluorescent printing, OVI printing, security printing such as pearl chip, pattern printing, etc. may be applied. It is possible to provide a combination of security technologies.

  Next, a process of adding an adhesive layer to the paper material is performed. This time, an adhesive layer mainly composed of vinyl chloride vinyl acetate copolymer will be added. As a method for adding an adhesive layer to the substrate 21, a liquid adhesive material having the above components may be applied by a known printing method such as roll coating or screen printing, or adhesion on a film having the above components. The materials may be bonded together by a known method such as laminating.

  Subsequently, a step of creating a first personal authentication information display unit is performed. This time, a face image is taken with a camera and converted to digital data. An information image was formed on the image receiving layer provided on the transfer foil based on the digital data. As a method for creating the first personal authentication information section, printing is performed by directly or directly providing an image receiving layer on a substrate, an image receiving layer is provided on a transfer foil, and an information image is formed on the image receiving layer. After the transfer, an indirect transfer method in which the image is transferred onto a substrate can be employed. As a means for forming an information image at this time, a known image formation such as a silver salt method, a sublimation transfer method, a hot-melt transfer method, a resin pigment transfer method, an electrophotographic method, an ink jet method, or a printing method is used. Means can be used.

  Next, a step of creating a second personal authentication information display unit is performed. As a method for creating the second personal authentication information display unit, there is a method using an electron beam exposure apparatus.

  Based on the digital data of the facial photograph used in the first personal authentication information display unit, a directional scattering pattern is formed on the photosensitive resin applied on the substrate to scatter external light. In the electron beam exposure apparatus, an electron beam irradiated from an electron gun is controlled by a computer to scan a PET substrate.

  The material used for the photosensitive resin is not particularly limited, but it is preferable to use a resin in which a thiazine sensitizing dye, a hexavalent chromium compound, and a water-soluble polymer are mixed. When this resin is used, not only can it be kept in a dissolved state of the sensitizing dye of the resin without drying in an ammonia atmosphere, but also the effect of improving the transmittance can be obtained.

  The PET substrate is placed on an XY stage with the photosensitive resin coating surface facing up. The electron beam emitted from the electron gun draws a diffraction grating pattern in units of dots. By moving the XY stage, a diffraction grating pattern is drawn one after another for each dot.

  After drawing, the photosensitive resin in the undrawn part is removed by development, washed with water, developed and dried. Then, as a reflective layer, a reflective layer or a refractive index layer is provided as a reflective layer by a known method such as a vacuum vapor deposition method, and the second individual is displayed by a directional scattering pattern that is formed of irregularities and scatters external light. An authentication information display unit was formed. On top of that, about 100 nm of ZnS was provided as a high refractive index layer by vacuum deposition to form a second personal authentication information part.

  Next, a step of laminating the first personal authentication information display unit and the second personal authentication information display unit on the base material coated with the adhesive is performed. Since the first personal authentication information display part and the second personal authentication information display part are provided on the transfer foil, they are adhered to the base material 41 by hot stamping by the hot stamp method, and then the base film is removed and laminated. It was.

Furthermore, the process of laminating a protective layer is performed.
An adhesive layer, a first personal authentication information display unit, and a second personal authentication information display unit are stacked on the base material, and a protective layer mainly composed of an acrylic resin is added this time. As a method for adding a protective layer, a liquid material having the above components may be applied by a known printing method such as roll coating or screen printing, or a protective layer on a film having the above components may be laminated. You may bond together by a well-known method.

  The second personal authentication information display units 13, 23, 33, and 43 can also make the diffraction grating pattern three-dimensional. In this case, as shown in FIG. 9, the cameras 53, 54, and 55 are arranged on the same horizontal line with respect to the person to be photographed 42 and photographed simultaneously. A stereoscopic image can be formed with a diffraction grating pattern using the images 56, 57, and 58 taken by the camera.

  In the above case, the image 57 photographed by the camera is used as the first personal authentication information display units 12, 22, 32, and 42, so 22, 32, 42 and the second personal authentication information display unit 13, 23 of the stereoscopic image can be compared, and the second personal authentication information display unit 13, 23 of the stereoscopic image can be identified with higher accuracy. it can.

  In addition, a single camera may be used for photographing the person to be photographed 52. In this case, a plurality of images are taken while moving on the same horizontal line, and a three-dimensional image is formed with a diffraction grating pattern using each image. I can do it.

  In addition, the first personal authentication information display unit may be formed based on diffraction grating image data created for the diffraction grating pattern used for the second personal authentication information display unit. As a result, the image data of the first personal authentication information display unit can be configured differently from the normal photograph or the original data, and thus the difficulty of falsification of the first personal authentication information display unit itself increases. A personal authentication medium can be provided.

  Further, as another embodiment of the personal authentication medium of the present invention, in addition to the above structure, a diffraction grating is formed by laminating a diffraction grating forming layer on at least a part of the base material or the first personal authentication information display section. It may be expressed. The diffraction grating forming layer is selected from the aforementioned cells, holograms, directional scattering layers, reflective layers, and high refractive index layers, and may be appropriately combined according to the purpose for use. At that time, it is necessary to configure so that the personal authentication information can be visually observed. Thereby, the difficulty of falsification of the base material and the first personal authentication information display unit itself is increased, and a personal authentication medium can be provided.

  For example, FIG. 10 is a cross-sectional view of each personal authentication medium 1, 2, 3, 4 of FIGS. 10A is similar to FIG. 2, the personal authentication medium 6 includes a base material 61, an adhesive layer 66, a first personal authentication information display unit 62, a cell 65, a second personal authentication information display unit 63, and a protective layer 66. It is configured. A diffraction grating forming layer 67 is provided on the substrate 6 other than the first personal authentication information display unit 63 and the first personal authentication information display unit 62.

  10B is similar to FIG. 4, the personal authentication medium 7 includes a base material 71, an adhesive layer 76, a first personal authentication information display unit 72, a cell 75, a second personal authentication information display unit 73, and a protective layer 76. It is configured. A diffraction grating forming layer 77 is provided on the base material 7 other than the first personal authentication information display unit 73 and the first personal authentication information display unit 72.

  In FIG. 10C, as in FIG. 6, the personal authentication medium 8 includes a base material 81, an adhesive layer 86, a first personal authentication information display unit 82, a cell 85, a second personal authentication information display unit 83, a protective layer 86, and the like. It is configured. A diffraction grating forming layer 87 is provided on the base material 8 other than the first personal authentication information display unit 83 and the first personal authentication information display unit 82.

  10D is similar to FIG. 8, the personal authentication medium 9 includes a base material 91, an adhesive layer 96, a first personal authentication information display unit 92, a cell 75, a second personal authentication information display unit 93, and a protective layer 96. It is configured. A diffraction grating forming layer 97 is provided on the base material 9 other than the first personal authentication information display unit 93 and the first personal authentication information display unit 92.

  FIG. 10 shows an example of the present invention. The order of the layer configuration of the adhesive layer 14, the first personal authentication information display unit 12, the cell 15, and the second personal authentication information display unit 13 may be changed. A function of protecting the base material and the image of the first personal authentication information display unit 12 from falsification may be added by providing the lattice forming layer on at least a part of the personal authentication medium.

The present invention relates to an image forming body that prints, prints, and draws a face image and a fingerprint, which are personal identification points, on a booklet such as a passport or a visa, or a personal authentication medium such as a card. Personal identification information such as image information such as the owner's face and fingerprint image is configured by arranging multiple cells with diffraction gratings, making counterfeiting and tampering difficult, and for examiners who perform personal identification Authentication with higher accuracy.

1, 2, 3, 4, 6, 7, 8, 9 Personal authentication medium 11, 21, 31, 41, 61, 71, 81, 91 Base material 12, 22, 32, 42, 62, 72, 82, 92 First personal authentication information display unit 13, 23, 33, 43, 63, 73, 83, 93 Second personal authentication information display unit 14, 24, 34, 44, 64, 74, 84, 94 Adhesive layer 15 Cell 25 Orientation Scattering layer 16, 26, 36, 46, 66, 76, 86, 96 Protective layer 67, 77, 87, 97 Diffraction forming layer 52 Imaged subject 53, 54, 55 Camera 56, 57, 58 Image taken by camera

Claims (17)

At least a substrate;
A first personal authentication information display unit for displaying the first personal authentication information in a colored manner;
A second personal authentication information display unit for displaying the second personal authentication information in a dot shape by a plurality of cells made of a diffraction grating;
Having an adhesive layer and a protective layer;
The adhesive layer is laminated on one side of the substrate,
The first personal authentication information display unit and the second personal authentication information display unit are disposed on the base material on the adhesive layer,
Furthermore, a personal authentication medium in which the protective layer is laminated on a surface having at least one of the adhesive layer, the first personal authentication information display unit, and the second personal authentication information display unit,
The personal authentication medium, wherein the first personal authentication information and the second personal authentication information are selected from personal authentication information of the same person. At least a substrate;
A first personal authentication information display unit for displaying the first personal authentication information in a colored manner;
Consists of a directional scattering layer with a diffusion function with a limited diffusion range of visible light,
A second personal authentication information display unit for displaying second personal authentication information;
Having an adhesive layer and a protective layer;
The adhesive layer is laminated on one side of the substrate,
The first personal authentication information display unit and the second personal authentication information display unit are disposed on the base material on the adhesive layer,
Furthermore, a personal authentication medium in which the protective layer is laminated on a surface having at least one of the adhesive layer, the first personal authentication information display unit, and the second personal authentication information display unit,
The personal authentication medium, wherein the first personal authentication information and the second personal authentication information are selected from personal authentication information of the same person. At least a substrate;
A first personal authentication information display unit for displaying the first personal authentication information in a colored manner;
A second personal authentication information display unit for displaying the second personal authentication information by diffracting or scattering external light;
Having an adhesive layer and a protective layer;
The adhesive layer is laminated on one side of the substrate,
The first personal authentication information display unit and the second personal authentication information display unit are disposed on the base material on the adhesive layer,
Furthermore, a personal authentication medium in which the protective layer is laminated on a surface having at least one of the adhesive layer, the first personal authentication information display unit, and the second personal authentication information display unit,
The first personal authentication information and the second personal authentication information are selected from personal authentication information of the same person;
A personal authentication medium, wherein at least a part of the first personal authentication information display unit and the second personal authentication information display unit overlap each other. At least a substrate;
A first personal authentication information display unit for displaying the first personal authentication information in a colored manner;
A second personal authentication information display unit for displaying the second personal authentication information by diffracting or scattering external light;
Having an adhesive layer and a protective layer;
The adhesive layer is laminated on one side of the substrate,
The first personal authentication information display unit and the second personal authentication information display unit are disposed on the base material on the adhesive layer,
Furthermore, a personal authentication medium in which the protective layer is laminated on a surface having at least one of the adhesive layer, the first personal authentication information display unit, and the second personal authentication information display unit,
The first personal authentication information and the second personal authentication information are selected from personal authentication information of the same person;
The personal authentication medium, wherein the first personal authentication information display unit and the second personal authentication information display unit are all stacked one on top of the other. The personal authentication medium according to any one of claims 1 to 4, wherein the first personal authentication information and the second personal authentication information are single personal authentication information belonging to the same person. The area of the first personal authentication information display unit is 0.1 to 30 times as large as the area of the second personal authentication information display unit. Authentication medium. The personal authentication medium according to claim 1, wherein the second personal authentication information display unit has a visible light transmitting layer that transmits visible light. The personal authentication medium according to claim 7, wherein at least a part of the second personal authentication information display unit is laminated on the first personal authentication information display unit. The second personal authentication information display unit includes a visible light transmitting layer that transmits visible light;
The personal authentication medium according to any one of claims 1 to 8, further comprising a high refractive index layer having a higher refractive index than that of the visible light transmission layer at least in part. The personal identification medium according to claim 9, wherein the high refractive index is selected from at least one of a metal, a metal oxide, an intermetallic compound, and a resin material, or a combination thereof. The second personal authentication information display unit includes a visible light transmitting layer that transmits visible light;
The personal authentication medium according to claim 1, further comprising a reflective layer at least in part. The personal authentication medium according to claim 1,
A personal authentication medium, wherein a diffraction scattering layer that diffracts or scatters external light is laminated on at least one part on a base material or at least one part on a first personal authentication information display part. The personal authentication medium according to claim 12,
The personal identification medium, wherein the diffraction scattering layer has a visible light transmitting layer that transmits visible light. The personal authentication medium according to claim 13,
A visible light transmission layer through which the diffraction scattering layer transmits visible light; and
A personal authentication medium comprising at least a part of a high refractive index layer having a refractive index higher than that of the visible light transmitting layer. The personal authentication medium according to claim 14,
The personal identification medium according to claim 1, wherein the reflective layer is selected from at least one of a metal, a metal oxide, an intermetallic compound, and a resin material, or a combination thereof. The personal authentication medium according to claim 13,
A visible light transmission layer through which the diffraction scattering layer transmits visible light; and
A personal authentication medium having a reflective layer at least partially. The cell is a cell in which a plurality of gradations are set by changing any one of the shape, thickness, material, size, diffraction grating spatial frequency, diffraction grating direction, and diffraction grating angle of each cell. 2. The number of cells selected, the way in which they are arranged, the distance between cells, and the like are appropriately selected according to the purpose, purpose, and personal authentication information to be displayed, and a plurality of cells are arranged to display the personal authentication information. The personal authentication medium described in 1.

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