JP5521475B2 - Image forming body manufacturing method, image forming body, personal authentication medium manufacturing method, and personal authentication medium - Google Patents

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. In addition, there are known 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). (OVD is an abbreviation for Optical Variable Device)

  These hologram and diffraction grating OVD techniques require sophisticated manufacturing techniques and are difficult to duplicate, and 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 lattice shape, a regular shape or an irregular 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 addition, as a means for forming image information such as a facial photograph by OVD, a method of directly drawing image information to create an original plate and embossing and replicating from the original plate can be considered, but in this case, It is effective in terms of counterfeiting and falsification prevention, but it is not realistic because it takes too much time and money to express individual information on demand.

  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. For example, a method for forming a face photograph using a dye that emits light by ultraviolet rays (for example, Patent Document 6), and a face photograph is formed by using a white inorganic phosphor that emits red light, green light, and blue light by ultraviolet light irradiation. Examples thereof include a method (for example, Patent Document 7) and a method for forming a facial photograph using a colorless or light fluorescent dye and a colored pigment (for example, 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. Image forming body, personal identification and authentication medium, and its manufacture with preventive performance against tampering, and easy-to-find performance that can be easily detected by observing suspected fraudulent products even if they are fraudulent It aims to provide a method.

The first invention includes a base material, a release layer, a third information display unit for displaying third information by diffracting or scattering external light, and diffracting or scattering external light for second personal authentication information. A method for producing an image forming body, characterized in that a second personal authentication information display unit for displaying the first personal authentication information and a first personal authentication information display unit for displaying the first personal authentication information in a colored manner are stacked at least in this order. In the method for producing an image forming body, the method includes at least the following steps.
(1) A release layer forming step of forming a release layer on one surface of the substrate.
(2) A third visible light transmitting layer pre-baking step in which a transparent resin is applied on the release layer and prebaked to form a third visible light transmitting layer.
(3) A third visible light transmitting layer in which a concave and convex portion having a diffraction grating structure or a directional scattering structure and a flat portion are selectively provided on the third visible light transmitting layer that has undergone the third visible light transmitting layer pre-baking step. Third visible light transmission layer forming step to be formed.
(4) A third information display unit forming step of forming a third information display unit by laminating a third film on the third visible light transmitting layer formed through the third visible light transmitting layer forming step.
(5) A second visible light transmission layer is formed by applying a photocurable transparent resin to the surface of the third information display unit formed through the third information display unit formation step and prebaking the second visible light transmission layer. Visible light transmission layer pre-baking step.
(6) A second visible light transmissive layer photocuring step of partially irradiating the second visible light transmissive layer with light to partially cure the second visible light transmissive layer.
(7) An uneven portion and a flat surface that diffracts or scatters external light by pressing a heated embossing roller on the second visible light transmission layer that has undergone the second visible light transmission layer photocuring step, light irradiation, and drying. A second visible light transmitting layer forming step of forming a second visible light transmitting layer provided with a portion selectively.
(8) the second second personal identification information display portion forming the second personal identification information display unit to the formed through a visible light transmission layer forming step the second visible light transmission layer are laminated second target film Forming process.
(9) A first personal authentication information display part forming step of forming a personal authentication information part for displaying the first personal authentication information in a colored manner on at least a part of the second personal authentication information display part.
The second invention includes a base material, a release layer, a third information display unit that displays third information by diffracting or scattering external light, and a first individual that displays first personal authentication information in a colored manner. An image forming body manufacturing method, wherein an authentication information display section and a second personal authentication information display section that displays second personal authentication information by diffracting or scattering external light are laminated at least in this order In the method for producing an image forming body, the method includes at least the following steps.
(1) A release layer forming step of forming a release layer on one surface of the substrate.
(2) Applying a transparent resin on the release layer and prebaking to form a third visible light transmission layer
Visible light transmission layer pre-baking step.
(3) A third visible light transmitting layer in which a concave and convex portion having a diffraction grating structure or a directional scattering structure and a flat portion are selectively provided on the third visible light transmitting layer that has undergone the third visible light transmitting layer pre-baking step. Third visible light transmission layer forming step to be formed.
(4) A third information display unit forming step of forming a third information display unit by laminating a third film on the third visible light transmitting layer formed through the third visible light transmitting layer forming step.
(5) forming a first personal authentication information display unit that displays the first personal authentication information in a colored manner on at least a part of the surface of the third information display unit formed through the third information display unit formation step; 1 personal authentication information display part formation process.
(6) A step of forming a release layer on one surface of another substrate.
(7) A second visible light transmitting layer pre-baking step in which a photocurable transparent resin is applied on the release layer and prebaked to form a second visible light transmitting layer.
(8) A second visible light transmissive layer photocuring step of partially irradiating the second visible light transmissive layer with light to partially cure the second visible light transmissive layer.
(9) An uneven portion and a flat surface that diffracts or scatters external light by pressing a heated embossing roller on the second visible light transmitting layer that has undergone the second visible light transmitting layer photocuring step, light irradiation, and drying. A second visible light transmitting layer forming step of forming a second visible light transmitting layer provided with a portion selectively.
(10) Forming a second personal authentication information display unit that forms a second personal authentication information display unit by laminating a second film on the second visible light transmission layer formed through the second visible light transmission layer formation step. Process. (11) the upper to the third information display unit, the step of transferring the second personal identification information display section, from the surface having the second target film.
According to a third aspect of the present invention, the second visible light transmission layer photocuring step forms a light shielding mask on which a desired individual information pattern is displayed on a transparent base material by providing a transmission portion and a light shielding portion, and the light shielding mask is formed. 3. The method for producing an image forming body according to claim 1, comprising pattern exposure in which the transparent resin is partially cured by being irradiated with light.
According to a fourth aspect of the present invention, the second visible light transmissive layer photocuring step forms a light shielding mask on which a desired individual information pattern is provided on a transmissive liquid crystal panel by providing a transmissive portion and a light shielding portion. 3. The method for producing an image forming body according to claim 1, comprising pattern exposure in which the transparent resin is partially cured by being irradiated with light.
According to a fifth aspect of the present invention, the second visible light transmission layer photocuring step includes pattern exposure in which a resin is partially cured using a reflective display element such as a digital mirror device. 3. A method for producing an image forming body according to any one of items 1 to 2.
According to a sixth aspect of the invention, the second visible light transmissive layer photocuring step includes pattern exposure in which the resin is partially cured by scanning with a laser beam. It is a manufacturing method of an image forming body.
In a seventh aspect of the invention, the third coating is selected from either a third high refractive index layer having a higher refractive index than the third visible light transmitting layer or a third reflective layer that reflects visible light. The method for producing an image forming body according to claim 1, wherein:
In an eighth aspect of the invention, the second coating is selected from either a second high refractive index layer having a higher refractive index than the second visible light transmission layer or a second reflection layer that reflects visible light. The method for producing an image forming body according to claim 1, wherein:
According to a ninth aspect of the invention, the image forming body manufacturing method according to any one of claims 1 to 8 further includes a step of creating a personal authentication medium by transferring the image forming body onto a member. This is a method for manufacturing a personal authentication medium.
The tenth invention comprises the step of forming a fourth personal authentication information display unit for displaying the fourth personal authentication information in a colored manner on at least a part of the member. It is a manufacturing method of an authentication medium.

According to the first invention, by using the above manufacturing method, it is possible to create an image forming body that has a complicated configuration of the image forming body, has a high anti-counterfeit effect, and can be difficult to reproduce and tamper. did it.
According to the second invention, by using the above-described manufacturing method, it is possible to create an image forming body that has a complicated configuration of the image forming body, has a high anti-counterfeit effect, and can be difficult to reproduce and tamper. did it.
According to the third invention, the second visible light transmissive layer photocuring step forms a light shielding mask on which a desired individual information pattern is provided on a transparent substrate by providing a transmissive portion and a light shielding portion, and By including pattern exposure that irradiates light through a mask and partially cures the second visible light transmission layer, not only can personal authentication information be created on a hologram on demand, but also the concave and convex portions can be selectively processed. In addition to being easy, there was an effect that it could be processed accurately.
According to the fourth invention, the second visible light transmissive layer photocuring step forms a light shielding mask in which a desired individual information pattern is displayed on the transmissive liquid crystal panel by providing a transmissive portion and a light shielding portion, and the light shielding is performed. By including pattern exposure that irradiates light through a mask and partially cures the second visible light transmission layer, not only can personal authentication information be created on a hologram on demand, but also the concave and convex portions can be selectively processed. In addition to being easy, there was an effect that it could be processed accurately.
According to the fifth invention, the second visible light transmissive layer photocuring step includes pattern exposure for partially curing the resin using a reflective display element such as a digital mirror device, and so on demand. Not only can the personal authentication information be created on the hologram, but also it has the effect that it can be processed accurately as well as making it easier to selectively process the uneven portions.
According to the sixth invention, the second visible light transmission layer photocuring step includes pattern exposure in which the resin is partially cured by laser beam scanning, so that personal authentication information can be created on a hologram on demand. In addition, the uneven portion is not only easily processed selectively but also has an effect of being accurately processed.
According to the seventh invention, the third coating is selected from either a third high refractive index layer having a higher refractive index than the third visible light transmitting layer or a third reflective layer reflecting visible light. As a result, not only can the structure be complicated, but also the third information displayed on the third 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 eighth invention, the second coating is selected from either a second high refractive index layer having a higher refractive index than the second visible light transmitting layer or a second reflective layer reflecting visible light. Thus, not only can the structure be complicated, but also 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 aspect of the present invention, the method of manufacturing the personal authentication medium created through the process of transferring the image forming body onto the member has a complicated configuration, a high anti-counterfeit effect, and makes reproduction and tampering difficult. We were able to create a possible personal authentication medium.
According to the tenth invention, the structure is further complicated by the step of forming the fourth personal authentication information display unit for displaying the fourth personal authentication information in color on the member. It was possible to create a personal authentication medium that can make tampering difficult .

1 is a schematic cross-sectional view of an image forming body and a personal authentication medium according to an aspect of the present invention. 1 is a schematic cross-sectional view of an image forming body and a personal authentication medium according to an aspect of the present invention. It is a manufacturing process schematic diagram of an image formation object and a personal authentication medium concerning one mode of the present invention. It is a manufacturing process schematic diagram of an image formation object and a personal authentication medium concerning one mode of the present invention. It is a schematic plan view of the personal authentication medium which concerns on 1 aspect of this invention. 1 is a schematic plan view of an image forming body according to an aspect of the present invention.

1) About 1st invention The aspect of 1st invention in this invention is a base material, a peeling layer, the 3rd information display part displayed by diffracting or scattering external light, a face image, a fingerprint, a signature A second personal authentication information display unit that displays a visible image such as a diffraction grating or directional scattering, and a first personal authentication information display that displays a visible image such as a face image, fingerprint, sign, etc. The first personal authentication information display unit and the second personal authentication information display unit transmit visible light, and the second personal authentication information 22 and the second personal authentication information 22 Since the first personal authentication information 21 is selected from the personal authentication information of the same person, the structure of the second personal authentication information display unit is complicated, making it difficult to falsify. Further, the second personal authentication information 22 and the third personal authentication information 22 Authentication by visually comparing information 23 It can be done.

  The information in the present invention refers to personal authentication information for authenticating an individual or the owner of the image forming body and security grant information for improving the security of the image forming body. Character information such as name, signature, blood type, etc. that can identify the owner of the formed body, numeric information such as date of birth, passport number, and ecological information such as facial images, fingerprints, veins, designs, designs Etc. are included. The security-giving information also includes symbols, designs, letters, numbers, etc. that are not related to personal authentication information. These combinations can increase the difficulty of falsification and security of the image forming body.

  FIG. 1 is a schematic view showing an example of an image forming body schematically showing a microneedle chip manufactured by the manufacturing method of the present invention, and FIG. 1 (a) is a schematic plan view of the image forming body. . The image forming body 10 displays first personal authentication information 21, second personal authentication information 22, and third information 23, respectively. The present invention is characterized in that the first personal authentication information 21 and the second personal authentication information 22 are selected from the personal authentication information of the same person.

  FIG. 1B is a cross-sectional view taken along the line AA of the image forming body 10 of FIG. As shown in FIG. 1B, the image forming body 10 includes a base material 50, a release layer 51, a third information display unit 3 that displays third information 23, and a second information that displays second personal authentication information 22. The personal authentication information display unit 2 and the first personal authentication information display unit 1 for displaying the first personal authentication information 21 are stacked in this order.

  Examples of the material of the base material 50 include plastic sheets such as plastic sheets such as polyethylene terephthalate (PET), polypropylene (PP), polycarbonate (PC), polymethyl methacrylate (PMMA), and polyethylene (PE). Although the thickness is also dependent on the use after formation, about 10-100 micrometers is preferable.

  Examples of the material of the release layer 51 include polycarbonate resin, acrylic resin, fluorine acrylic resin, silicone acrylic resin, epoxy acrylate resin, polystyrene resin, cycloolefin polymer, methylstyrene resin, fluorene resin, PET, polypropylene, and polyethylene. A thermoplastic resin such as terephthalate resin or polyacetal resin with silicone or fluorine-based additives added is preferred, or a resin that easily peels from the substrate 50, such as fluorine-based acrylic resin or silicone-based acrylic resin, is selected. May be. Further, depending on the purpose and purpose, the structure may be such that the release layer 51 is eliminated.

  The third information display unit 3 has a third visible light transmission layer 52, and displays the third information 23 by diffracting or scattering external light.

  The third visible light transmission layer 52 may use a known hologram technique such as a relief hologram or a Lippmann hologram as a method of diffracting or scattering external light. As for the hologram, an embossed hologram or the like having a visual effect different from that of a normal printed matter by including a diffraction grating-like fine uneven pattern in which a plurality of fine unevenness is arranged on the surface is known. For example, the relief-type hologram described above is a kind of embossed hologram, and the surface structure has irregularities with a pitch of about 1 μm and a depth of about 100 nm arranged in a line direction. Are emitted as diffracted light at a specific angle. With the diffracted light, it is possible to display an image that changes according to the observation conditions or to display a stereoscopic image. Moreover, the rainbow-colored diffracted light expressed by the fine concavo-convex pattern cannot be expressed by a normal printing technique. For this reason, optical articles including a fine uneven pattern are widely used for articles that require anti-counterfeiting measures.

The third visible light transmission layer 52 has an unevenness that expresses a diffraction grating, and controls the direction, angle, brightness, etc. of diffracting external light, and sets a plurality of gradations according to the observation angle. Thus, the display image can be changed.
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.
A plurality of cells composed of diffraction gratings are arranged in the form of dots inside the third information display unit 3 to form a diffraction grating in which these parameters are changed for each cell (pixel). A display image having gloss can be formed. In addition to the above, a cell with multiple types of gradations can be created by changing the shape, thickness, material, size, etc. of each cell, and each cell can be selected appropriately according to the purpose, purpose, and information to be displayed. It is also possible to display a plurality of information by arranging them.

  A portion with unevenness and a portion without unevenness are selectively arranged. The method of arranging the unevenness is not particularly limited, but may be arranged like a relief type diffraction grating, or may be arranged in a matrix in a planar shape. Moreover, you may arrange in a random form or a dot form. Depending on the required pixels, the area of the unevenness on the visible surface side may be changed as appropriate.

  The material used when the third visible light transmission layer 52 is a diffraction grating has good moldability, is less likely to cause unevenness, provides a bright reproduced image, and has good adhesion to a substrate, a protective layer, and an adhesive layer The resin material which is is good. For example, polyurethane resins, polycarbonate resins, polystyrene resins, polyvinyl chloride resins, propylene resins, polyethylene terephthalate resins, polyacetal resins, and other thermoplastic resins, unsaturated polyester resins, melamine resins, epoxy resins, urethane (meth) acrylates, polyols Thermosetting resin such as (meth) acrylate, melamine (meth) acrylate, triazine (meth) acrylate, acrylonitrile styrene copolymer resin, phenol resin, melamine resin, urea resin, alkyd resin, polycarbonate resin, acrylic resin, Fluorine acrylic resin, silicone acrylic resin, epoxy acrylate resin, polystyrene resin, cycloolefin polymer, methylstyrene resin, fluorene resin, PET, Photocurable resins such as propylene, mixtures thereof, and thermoformable materials having radically polymerizable unsaturated groups can be used. Stability that can form a diffraction grating is also possible with other than the above. Any material can be used. It is further preferable to use the above material as a visible light transmitting layer that transmits visible light. More preferably, when a photocurable resin is used, the material properties after photocuring to form a diffraction grating generally have high heat resistance. Therefore, the diffraction grating formed during paper transfer or the like is heated. Is preferable because it is difficult to collapse. The refractive index is not particularly limited, but is preferably about 1.5.

  The shape of the unevenness formed in the third visible light transmission layer 52 is not particularly limited, but the shape on the visible surface side may be a cube formed of a circle, an ellipse, a polygon such as a triangle or a quadrangle, 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.

  About the thickness of the unevenness | corrugation of the 3rd visible light transmission layer 52, the thickness of the unevenness | corrugation of the 3rd visible light transmission layer 52 is 0.1-2.0 micrometers, and it can reproduce a visible image. The thickness of the unevenness of the plurality of third visible light transmitting layers 52 arranged may be uniform, or the thickness of the unevenness may be different. Even when the image forming body 10 is provided as a transfer foil, it is very difficult to falsify by removing only the irregularities of the third visible light transmission layer 52.

  Although not shown this time, as for the distance between dots when a plurality of diffraction gratings are arranged in a dot shape, personal authentication information cannot be displayed accurately if the distance between adjacent dots is too long. Therefore, it is preferable that adjacent cells be 300 μm or less. On the other hand, if the distance between the dots is too short, there is a possibility that interference or irregularity in the displayed information may occur. What is necessary is just to adjust suitably with the material of a dot.

  Further, as the third visible light transmission layer 52, a directional scattering layer having a diffusion function in which a visible light diffusion range is limited may be provided instead of the diffraction grating. The directional scattering layer is characterized by reflecting only light incident from a specific direction and scattering light incident from other directions.

  The material used for the directional scattering layer is preferably a resin material 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 is not particularly limited, but the shape on the visible surface side of the directional scattering layer may be a cube made 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, a visible image can be reproduced at 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.

  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.

  In addition, in order to display information on the third visible light transmission layer 52, it is necessary to make a diffraction grating or directional scattering appear. As a method therefor, there is a method of providing a first coating 53 that causes a diffraction grating or directional scattering to appear on the first visible light transmission layer 52. The third coating 53 is provided with a high refractive index layer using a material higher than the refractive index of the third visible light transmission layer 52. By providing a high refractive index layer, diffraction grating or directional scattering can appear. By using a material that transmits visible light as the material of the high refractive index layer, various information such as face images, names, designs, etc. of the first personal authentication information display unit and the second personal authentication information display unit that are laminated It can be confirmed visually.

  The high refractive index layer is formed by providing a single layer or multiple layers of metal oxide, intermetallic compound, resin material or metal oxide, intermetallic compound, or resin material dispersed in resin material. The

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. The refractive index is preferably 2.0 or more. This is because if the difference in refractive index with the third visible light transmission layer 52 is small, the visual effect of the diffracted light due to the unevenness of the third visible light transmission layer 52 is weakened. Specifically, the difference in refractive index between the third visible light transmission layer 52 and the high refractive index layer is preferably at least 0.5. 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. More preferably, it is 50 nm or more and 100 nm or less. This is because if the thickness is less than 10 nm, a diffraction grating that can be visually confirmed cannot be expressed, and if it is thicker than 1000 nm, light cannot be transmitted and information in the lower layer cannot be viewed. The transparent thin film layer may be one in which a high refractive index powder such as TiO2 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.

  Further, in order to display information on the third visible light transmission layer 52, as another aspect of the third coating 53 for causing the diffraction grating or directional scattering to appear, a method of providing a reflective layer instead of the high refractive index layer There is. 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 or the directional scattering is caused to appear using the high refractive index layer or the reflective layer, it is preferable that information other than the third information display unit 3 can be visually observed. Therefore, personal authentication information such as a face and a name displayed on the second personal authentication information display unit 2 and the first personal authentication information information display unit 1 while causing the diffraction grating or directional scattering of the third information display unit 3 to appear. As a method for visually confirming the above, 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 diffraction grating of the 1st information display part 1 or directional scattering appear by such a method.

  The personal information image such as the face image and the name of the second personal authentication information display unit 2 and the first personal authentication information display unit 1 in which the diffraction grating or the directional scattering of the third information display unit 3 appears, and there is a layer below it. As a method that can be visually confirmed, there is a method of demetalizing the metallic luster layer. The diffraction grating of the third information display unit 3 can be visually recognized by removing the metal of the metallic luster layer in the form of halftone dots or lines, but at the same time, the second personal authentication information display unit 2 and the first individual below it The authentication information display unit 1 and personal information images such as names can also be confirmed visually.

  The second personal authentication information display unit 2 includes a second visible light transmission layer 54, and displays the second personal authentication information 22 by diffracting or scattering external light.

The second visible light transmitting layer 54 may use a known hologram technique such as a relief hologram or a Lippmann hologram. The second visible light transmission layer 54 has a cell that expresses a diffraction grating, and controls the direction, angle, brightness, etc. of diffracting external light to set a plurality of types of gradations, so that the observation angle can be set. Accordingly, the display image can be changed.
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.
The second personal authentication information display unit 2 has a directivity by arranging a plurality of cells made of diffraction gratings in a dot shape and forming a diffraction grating in which these parameters are changed for each cell (pixel). A display image having gloss can be formed. In addition to the above, a cell with multiple types of gradations can be created by changing the shape, thickness, material, size, etc. of each cell, and each cell can be selected appropriately according to the purpose, purpose, and information to be displayed. It is also possible to display a plurality of information by arranging them.

  Selectively arrange cells with and without cells. The arrangement of the cells is not particularly limited, but may be arranged like a relief type diffraction grating, or may be arranged in a matrix in a planar shape. Moreover, you may arrange in a random form or a dot form. Depending on the required pixel, the area of the cell on the visible surface side may be changed as appropriate.

  The material used for the second visible light transmissive layer 54 is preferably a resin material 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, polyurethane resins, polycarbonate resins, polystyrene resins, polyvinyl chloride resins, propylene resins, polyethylene terephthalate resins, polyacetal resins, and other thermoplastic resins, unsaturated polyester resins, melamine resins, epoxy resins, urethane (meth) acrylates, polyols Thermosetting resin such as (meth) acrylate, melamine (meth) acrylate, triazine (meth) acrylate, acrylonitrile styrene copolymer resin, phenol resin, melamine resin, urea resin, alkyd resin, polycarbonate resin, acrylic resin, Fluorine acrylic resin, silicone acrylic resin, epoxy acrylate resin, polystyrene resin, cycloolefin polymer, methylstyrene resin, fluorene resin, PET, Photocurable resins such as propylene, mixtures thereof, and thermoformable materials having radically polymerizable unsaturated groups can be used. Stability that can form a diffraction grating is also possible with other than the above. Any material can be used. It is further preferable to use the above material as a visible light transmitting layer that transmits visible light. More preferably, it is preferable to use a photo-curable resin because on-demand processing is facilitated. Photocurable resins include positive and negative types, and may be appropriately selected depending on the purpose, application, and process. As the photocurable resin, it is preferable to use a UV curable resin material that is excellent in reactivity, curing speed, and curing accuracy. The refractive index is not particularly limited, but is preferably about 1.5.

  The shape of the unevenness formed in the second visible light transmission layer 54 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.

  About the thickness of the unevenness | corrugation of the 2nd visible light transmission layer 54, the thickness of the unevenness | corrugation of the 2nd visible light transmission layer 54 is 0.1-2.0 micrometers, and it can reproduce a visible image. The thickness of the unevenness of the plurality of second visible light transmission layers 54 arranged may be uniform or the thickness of the unevenness may be different. Even when the image forming body 10 is provided as a transfer foil, it is very difficult to falsify by removing only the unevenness of the second visible light transmission layer 54.

  Although not shown this time, as for the distance between dots when a plurality of diffraction gratings are arranged in a dot shape, personal authentication information cannot be displayed accurately if the distance between adjacent dots is too long. Therefore, it is preferable that adjacent cells be 300 μm or less. On the other hand, if the distance between the dots is too short, there is a possibility that interference or irregularity in the displayed information may occur. What is necessary is just to adjust suitably with the material of a dot.

  Further, as the second visible light transmission layer 54, a directional scattering layer having a diffusion function with a limited visible light diffusion range may be provided instead of the diffraction grating. The directional scattering layer is characterized by reflecting only light incident from a specific direction and scattering light incident from other directions.

  The material used for the directional scattering layer is preferably a resin material 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 is not particularly limited, but the shape on the visible surface side of the directional scattering layer may be a cube made 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, a visible image can be reproduced at 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.

  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.

  In addition, in order to display information on the second visible light transmission layer 54, it is necessary to make a diffraction grating or directional scattering appear. As a method therefor, there is a method of providing a second coating 55 that makes a diffraction grating or directional scattering appear on the second visible light transmission layer 54. The second coating 55 is provided with a high refractive index layer using a material higher than the refractive index of the second visible light transmission layer 54. By providing a high refractive index layer, diffraction grating or directional scattering can appear. By using a material that transmits visible light as the material of the high refractive index layer, not only the second personal authentication information display unit 2 stacked but also the first personal authentication information unit 1 and the third information display unit 3 Various information such as face images, names, designs, etc. can be visually confirmed.

  The high refractive index layer is formed by providing a single layer or multiple layers of metal oxide, intermetallic compound, resin material or metal oxide, intermetallic compound, or resin material dispersed in resin material. The

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. The refractive index is preferably 2.0 or more. This is because if the difference in refractive index from the second visible light transmission layer 54 is small, the visual effect of the diffracted light due to the unevenness of the second visible light transmission layer 54 is weakened. Specifically, the difference in refractive index between the second visible light transmission layer 54 and the high refractive index layer is preferably at least 0.5. 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. More preferably, it is 50 nm or more and 100 nm or less. If it is thinner than 10 nm, it becomes impossible to express a diffraction grating or directional scattering that can be visually confirmed, and if it is thicker than 1000 nm, light cannot be transmitted and information in the lower layer cannot be seen. Because. The transparent thin film layer may be one in which a high refractive index powder such as TiO2 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 mode of the second coating 55 for causing the diffraction grating or the directional scattering to appear in order to display information on the second visible light transmission layer 54, a method of providing a reflective layer instead of the high refractive index layer There is. 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 a diffraction grating or directional scattering is caused to appear using a high refractive index layer or a reflective layer, it is preferable that information other than the second personal authentication information display unit 2 can be visually observed. Therefore, the diffraction grating or directional scattering of the second personal authentication information display unit 2 appears, and the personal authentication information such as the face and name displayed on the first information display unit 1 and the third information display unit 3 is visually observed. As a method that can be confirmed, 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 diffraction grating of the 2nd personal identification information display part 2 or directional scattering appear by such a method.

  The diffraction grating or directional scattering of the second personal authentication information display unit 2 appears, and the personal information image such as the face image and name of the third information display unit 3 and the first personal authentication information display unit 1 can be visually confirmed. As a method, there is a method of demetalizing the metallic luster layer. Although the diffraction grating of the second personal authentication information display unit 2 can be visually recognized by removing the metal of the metallic luster layer in the form of dots or lines, the first information display unit 1 and the third information display unit 3 and You can also visually check personal information images such as names.

  The first personal authentication information display unit 1 has at least a first visible light transmission layer 56 and displays the first personal authentication information 21 in a colored manner.

  As a material used for the first visible light transmission layer 56, a thermoplastic resin such as propylene resin, polyethylene terephthalate resin, polyacetal resin, and polyester resin is used. These resins are used to write information related to personal authentication, such as text information such as face photos, names, and dates of birth, using color ribbons. It is preferable that it also has a function as an adhesive. Further, if necessary, an image receiving layer for improving the fixing and color development of a color ribbon or colored ink may be provided.

  The thickness of the third visible light transmission layer 56 is preferably about 3 μm to 8 μm.

  In FIG. 1, the first personal authentication information display unit 1 and the second personal authentication information display unit 2 use the same face photograph, but the first personal authentication information display unit 1 and the second personal authentication information display unit 2 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 1 may display a face photo and name from the front, and the second personal authentication information display unit 2 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 1 may attach a photograph as the visual confirmation information, 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 1, 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.

  The size of the image forming body 10 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 21 to be included in these sizes is easier to identify, but other information In consideration of a balance such as putting in, it is generally 1/3 or less of the size of the image forming body 10.

  Although the size of each personal authentication information displayed on the first personal authentication information display unit 1 and the second personal authentication information display unit 2 is not particularly limited, the first personal authentication information 21 and the second personal authentication information The ratio of 22 is preferably 1: 1. When the first personal authentication information 21 and the second personal authentication information 22 having the same size are stacked in the same position, it is easy to compare detailed shapes and information, and more accurate authentication is possible. Note that the sizes of the first personal authentication information 21 and the second personal authentication information 22 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 image forming body 10 to be used, the objective, and a use.

  The size of the base material, the release layer, the first personal authentication information display unit 1, the second personal authentication information display unit 2, and the third information display unit 3 is not particularly limited, but as shown in FIG. If the sizes of the 1 personal authentication information display unit 1, the second personal authentication information display unit 2, and the third information display unit 3 are all the same, the processability in manufacturing and the thickness generated in the image forming body 10 are increased. This is preferable because the influence of variation can be eliminated. However, the size may be appropriately adjusted according to the size of the personal authentication information to be displayed.

  Next, a specific method for manufacturing the image forming body 10 according to the present invention will be described.

  The manufacturing method of the image forming body 10 shown in FIG. 1 is as follows.

(1) Peeling layer formation process Arbitrary resin is selected with coating methods, such as a well-known gravure, and the peeling layer 51 is formed on the plastic film used as the base material 50. FIG. The base material and release layer material used here are as described above. As a method of adding the release layer 51 to the base material 50, a liquid adhesive material having the above-described components may be applied by a known printing method such as roll coating or screen printing, or the above-described release layer material is used. A film-like one may be bonded by a known method such as laminating.

(2) Third Visible Light Transmitting Layer Pre-Bake Step The above-described resin material is applied on the release layer 51 by a known gravure coating method and prebaked such as heat drying to form the third visible light transmitting layer 52. Form. The pre-baking method is not particularly limited, and it is preferable to use a drying furnace that generates infrared rays or hot air. About time and temperature, what is necessary is just to select suitably by the used material.

  Note that the third visible light transmission layer 52 may be formed by laminating the above material into a film shape to the release layer 51 by a known method such as lamination. By using a film, it is possible to omit the application step and the pre-bake step.

  In this case, the film on which the third visible light transmission layer 52 is formed may be produced on the same line as the concavo-convex pattern formation in the next step or may be produced on a separate line. Since the pattern forming speed is different, it is preferable that the pattern is formed on a separate line. The resin layer has a thickness of about 1 to 10 times the height of the target concavo-convex pattern, but is preferably about 0.5 to 5 μm in view of coating with a coating machine.

(3) Third visible light transmissive layer forming step The third visible light transmissive layer 52 that has undergone the third visible light transmissive layer pre-baking step is selectively provided with an uneven portion and a flat portion having a diffraction grating structure or a directional scattering structure. The third visible light transmission layer 52 is formed.

  As a method of selectively providing the uneven portion and the flat portion having a diffraction grating structure or a directional scattering structure in the third visible light transmission layer that has undergone the pre-baking process, there is a method using heated embossing. The heating embossing is a method of forming an uneven pattern by pressing an embossing roll around which an embossed original plate is wound against a third visible light transmitting layer. In general, an embossed original plate is formed on a metal plate with a predetermined pattern as an uneven pattern. The third visible light transmitting layer 52 and the embossed original plate are pressure bonded to each other by heating, and the patterned third visible light transmitting layer 52 is peeled off together with the base material to obtain a desired uneven pattern.

  In addition, the uneven | corrugated pattern provided in said metal plate is produced based on the 3rd information 23. FIG. The 3rd information 23 will not be specifically limited if it is the information which provides security, What is necessary is just to select suitably according to a use or purpose, such as a design and a design. In addition, based on the third information 23, a metal plate to be an original plate is produced using a known technique. Known materials and techniques may be used for the material used for the metal plate and the manufacturing method.

(4) Third Information Display Unit Forming Step Next, the third information display unit is formed by laminating the third coating 53 on the third visible light transmitting layer 52 formed with the concavo-convex pattern. Examples of the method of laminating the third coating 53 include vapor deposition methods such as vacuum evaporation and sputtering. At this time, in order to improve the adhesion between the third visible light transmission layer 52 and the coating 53, it is more preferable to perform a corona treatment on the third visible light transmission layer 52.

(5) Second Visible Light Transmission Layer Prebaking Step Next, the resin material is applied onto the third coating 53 by a known coating method such as gravure, and prebaking such as heat drying is performed to obtain the second visible light. A transmissive layer 54 is formed. The pre-baking method is not particularly limited, and it is preferable to use a drying furnace that generates infrared rays or hot air. About time and temperature, what is necessary is just to select suitably by the used material.

  More preferably, when the second visible light transmitting layer 54 is pre-baked by pre-baking and is wound on a roll after being brought into a tack-free state in which the second visible light transmitting layer 54 does not adhere even if it is in contact with other materials, This not only facilitates processing of diffraction gratings and directional scattering irregularities, but also reduces the risk of sticking between materials and contamination by foreign matter when the second visible constituent transmission layer 54 is rolled. preferable.

  At this time, it is more preferable to perform a corona treatment on the third coating 53 in order to improve the adhesion between the third coating 53 and the second personal authentication information display unit 54.

  Note that the second visible light transmission layer 54 may be formed by laminating a film of the above material by a known method such as lamination. By using a film, it is possible to omit the application step and the pre-bake step.

(6) Second visible light transmitting layer photocuring step The second visible light transmitting layer 54 is partially irradiated with light to partially cure the second visible light transmitting layer 54.

  A pattern in which the pre-baked second visible light transmission layer 54 is partially irradiated with light is the second personal authentication information 22, which includes character information such as name, signature, blood type, date of birth, passport number, etc. Number information, ecological information such as facial images, fingerprints, veins, designs, designs, etc. are included. Although a face image is used in FIG. 1, there is no particular limitation, and one type of personal authentication information may be used, or a plurality of types may be combined. In addition, it is preferable to use UV light for light irradiation.

  As a procedure for creating the second personal authentication information 22 in the second personal authentication information display unit 2, first, personal authentication information is collected by a device such as a camera or a scanner and converted into digital data by a personal computer or the like. Face image data is created based on the digital data.

  Then, the second visible light transmission layer 54 prebaked using the image data obtained above is partially irradiated with light. For that purpose, the following methods are mentioned.

  Using face image data input by binarization of black and white from a personal computer, a light shielding mask is created by printing 82 on the transparent base material 81 for the light shielding mask by a general printing method such as a known thermal head method or ink jet method. To do.

  The material of the light shielding mask transparent substrate 81 is a highly transparent plastic sheet such as PET, and the thickness is not particularly limited, but is preferably about 50 μm to 125 μm.

  The material of the light shielding portion printed on the light shielding mask transparent substrate 81 is not particularly limited as long as it is a known black ink that does not transmit light. The thickness is not particularly limited, but is preferably about 1 μm to 3 μm.

  The printing method for printing the light shielding portion on the light shielding mask transparent substrate 81 is not particularly limited. For example, a known thermal head method, an ink jet method, or the like can be used.

  As another method, there is a method of displaying face image data input from a personal computer by binarization of black and white on a liquid crystal panel and using the liquid crystal panel as a light shielding mask.

  The type of liquid crystal is not particularly limited as long as it is a type that can transmit without absorbing UV, and the size is preferably at least large enough to project a face image. The converted face image is displayed on the liquid crystal panel in black and white binary, and the liquid crystal panel is used as a light shielding mask.

  Next, the surface of the second film 55 of the film prepared as described above and the light-shielding mask prepared as described above are brought into close contact with each other, and light irradiation 84 is performed through the light-shielding mask 83, thereby masking the resin of the second personal authentication information display unit 54. Is selectively cured into a pattern. The exposure conditions may be the same as in other methods.

  Moreover, the pattern which makes resin partially harden | cure using a reflective display element as another aspect which irradiates light partially to the 2nd temporary hardening resin layer, and photocures a part of 2nd temporary hardening resin layer. Pattern exposure in which the resin is partially cured by exposure or laser beam scanning may be used.

  For pattern exposure in which the resin is partially cured using a reflective display element, specifically, a digital mirror device is preferably used. The digital mirror device is a type of display element in which a large number of micromirror surfaces (micromirrors) are arranged in a plane. When the digital mirror device to which the face image information is input is irradiated with UV light, the light of each mirror tilted to the ON state is magnified by another lens, and the input face image is UV light and the transparent mask 81 for the light shielding mask. Projected on top. Therefore, the projected portion is cured and pattern exposure can be performed in the same manner as described above.

  On the other hand, for pattern exposure in which the resin is partially cured by scanning with a laser beam, the pattern exposure is performed by scanning on the light shielding mask transparent substrate 81 with a UV light laser according to the pattern of the input face image, and partially curing. How to do it.

  Note that the method of selectively creating the uneven portion in the second visible light transmitting layer 54 may be used as a method of forming the uneven portion in the third visible light transmitting layer 52. This not only makes the structure of the image forming body more complicated, but also makes it easier to create the third information 23 on demand.

(7) Second visible light transmission layer forming step Pattern embossing is formed on the second visible light transmission layer. As a forming method, there is a method of using a metal plate having a solid pattern unevenness wound around an embossing roll. An embossing roller having a heated metal plate on the surface is pressed against the second visible light transmitting layer that has undergone the second visible light transmitting layer photocuring step, and external light is diffracted only on a portion that has not been photocured. The uneven portion to be scattered is provided, and after that, through light irradiation, drying, etc., the uneven portion and the flat portion are selectively patterned from the data based on the personal authentication information to form a completely cured second visible light transmission layer. .

  The material of the metal plate is not particularly limited, but nickel, copper and the like are common.

  The metal plate has a solid pattern of unevenness on the entire surface, but it is sufficient that a diffraction grating or directional scattering is generated, and the shape is not particularly limited. The purpose is appropriately selected depending on the application.

(8) Second Personal Authentication Display Unit Formation Step Next, the second film 55 is laminated on the resin layer to be the second personal authentication information display unit 2 by the same method as the first film 53 forming method. The second personal authentication display unit 2 is created. At this time, in order to improve the adhesion between the second visible light transmission layer 54 and the second coating 55, it is more preferable to perform a corona treatment on the second personal authentication information display unit 54.

  Note that the above-described process for producing the second personal authentication information display unit 2 may be used for producing the third information display unit 3. As a result, it is possible to produce an image forming body having higher security.

(9) First Personal Authentication Information Display Unit Forming Step Subsequently, the first personal authentication information display unit 1 is formed on the second personal authentication information display unit 2 displaying the second personal authentication information 22. As the method, a material having the component of the first visible light transmission layer 56 is applied on the second film 55 of the second personal authentication information display unit 2 by a known printing method such as roll coating or screen printing. Alternatively, the first visible light transmission layer 56 of the first personal authentication information display unit 1 may be formed by laminating materials on the film having the above components by a known method such as lamination.

The first personal authentication information 21 displayed on the first personal authentication information display unit 1 displays personal authentication information of the same person as the second personal authentication information 22 and is used by the second personal authentication information display unit 54. using the digital data, to create the first information display section for displaying the first personal authentication information 21. Further, in addition to personal authentication information, backgrounds, designs, and designs may be given together to improve security and design.

  As a method of giving the first personal authentication information 21 to the first personal authentication information display unit 1, a method of printing directly or with an image receiving layer on the first visible light transmitting layer 56, or an image receiving layer on the transfer foil Etc., and after forming an information image on the image receiving layer, an indirect transfer method can be adopted in which the image is transferred onto a substrate. 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. Preferably, a thermal head system using a general color ribbon is used. The third information 23 such as an image such as a face image, a name, a date of birth, etc., or a character number is printed and written. Here, the image forming body 10 shown in FIG. 1 is completed.

  Also, although not shown this time, a transfer material to which a design, character information, design, etc. are added on another base material 60 in addition to the first personal authentication information 21 is created, and the first personal authentication information 21 is provided. The formed surface may be laminated on the second film 55 and transferred. The method is not particularly limited.

  As shown in FIG. 6, the image forming body 10 adjusts the arrangement of the first personal authentication information 21, the second personal authentication information 22, and the third information 23 so that at least two pieces of information overlap. It may be displayed. A personal authentication medium 11 using the image forming body 10 described above may be used.

Further, as shown in FIG. 1C, the image forming body 10 created in the present invention is transferred onto the member 60 from the side having the first personal authentication display unit 1 and the second personal authentication display unit 2, and personal authentication is performed. It is good also as a medium. The member 60 in the present invention includes, for example, a booklet used to prove an individual's identity such as a passport, a bankbook, an employee card, and a student 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.

  Further, as shown in FIG. 5, a photograph or the like may be pasted on the member 70 as the fourth personal authentication information 24, or the photograph information may be digitized and reproduced on the personal authentication medium 11. Indirect transfer method in which printing is performed directly or on an image receiving layer on the member 70, or an image receiving layer or the like is provided on a transfer foil, an information image is formed on the image receiving layer, and then transferred onto a substrate. Can be taken. 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. Further, a primer layer for improving the adhesiveness of the transfer foil may be provided on the member 70 that is a transfer target. 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.

  FIG. 3 shows a schematic diagram of the manufacturing process of the image forming body in the first invention. FIG. 3 shows the manufacturing process after the second visible light transmission layer pre-baking process. First, face image data input from a personal computer by binarization of black and white is printed on the light shielding mask transparent base material 81 by the printing unit 82.

  Next, the surface of the second visible light transmission layer 54 formed through the second visible light transmission layer pre-baking step as described above is brought into close contact with the light shielding mask 83 created as described above, and light is transmitted through the light shielding mask 83 by the UV exposure device 84. By irradiating, the second visible light transmission layer 54 is cured in the pattern of the light shielding mask 83.

  Next, pattern embossing is performed using a metal plate 85 having a solid pattern unevenness wound around the embossing roll. As a method, by heating and bonding the second visible light transmission layer 54 and the metal plate under pressure, a concave / convex pattern derived from the metal plate 85 is formed only on the portion that is not irradiated with light by the UV exposure device 84, Based on the data of the face image, the second visible light transmission layer 54 in which the diffraction grating-like uneven surface and the flat surface are selectively provided is formed. Further, when the UV exposure device 86 is irradiated with light together with pressure bonding and impression is given by the drying unit 90, the completely cured second visible light transmission layer 54 is formed. Thereafter, a high refractive index layer as the second coating 55 is vapor deposited by the high refractive index layer vapor deposition device 87 to develop a diffraction grating. In other words, individual information such as a desired face image can be obtained on demand by irradiating light through a light-shielding mask and by forming irregularities only on the uncured resin layer that has not been cured because light does not pass through the light-shielding part. It becomes possible to express.

  Subsequently, the first visible light transmission layer 56 is laminated on the second personal authentication information display unit 2 displaying the face image by the transfer device 88, and a general color ribbon is used for the first visible light transmission layer 56. By using the thermal head method, personal authentication information such as letters and numbers such as a face photograph, name, date of birth, etc. is printed and written by the printing unit 89. Here, the image forming body 10 shown in FIG. 1 is completed.

  Finally, from the surface side of the image forming body 10 having the first personal authentication display portion 1 and the second personal authentication display portion 2, heat transfer 91 is performed on a member 70, for example, a paper for passport, and the base of the image forming body 10. The personal authentication medium 11 shown in FIG. 3 is completed by peeling only the material 50.

2) About 2nd invention 1st invention in this invention is a base material, a peeling layer, the 3rd information display part displayed by diffracting or scattering external light, a face image, a fingerprint, a signature, etc. A first personal authentication information display unit that displays a visible image in a colored manner; and a second personal authentication information display unit that displays a visible image such as a face image, fingerprint, or signature using a diffraction grating or directional scattering. And the first personal authentication information display unit, the second personal authentication information display unit, and the third information display unit transmit visible light, and the second personal authentication information. 22 and the first personal authentication information 21 are selected from the personal authentication information of the same person, the structure of the second personal authentication information display unit becomes complicated and difficult to falsify. Visual comparison of the third information 23 Can be authenticated.

  The information in the present invention refers to personal authentication information for authenticating an individual or the owner of the image forming body and security grant information for improving the security of the image forming body. Character information such as name, signature, blood type, etc. that can identify the owner of the formed body, numeric information such as date of birth, passport number, and ecological information such as facial images, fingerprints, veins, designs, designs Etc. are included. The security-giving information also includes symbols, designs, letters, numbers, etc. that are not related to personal authentication information. These combinations can increase the difficulty of falsification and security of the image forming body.

  FIG. 2 is a schematic view showing an example of an image forming body schematically showing a microneedle chip manufactured by the manufacturing method of the present invention, and FIG. 2 (a) is a schematic plan view of the image forming body. . The image forming body 10 displays first personal authentication information 21, second personal authentication information 22, and third information 23, respectively. The present invention is characterized in that the first personal authentication information 21 and the second personal authentication information 22 are selected from the personal authentication information of the same person.

  FIG. 2B is a cross-sectional view taken along line BB of the image forming body 10 in FIG. As shown in FIG. 2B, the image forming body 10 includes a base material 50, a release layer 51, a third information display unit 3 that displays third information 23, and a first information that displays first personal authentication information 21. The personal authentication information display unit 1 and the second personal authentication information display unit 2 for displaying the second personal authentication information 22 are stacked in this order.

  The materials used in the base material 50, the release layer 51, the first information display unit 1, the second personal authentication information display unit 2, and the third information display unit 3 may be the same as those used in the first invention. It may be selected appropriately according to the purpose.

  Next, a specific method for manufacturing the image forming body 10 according to the second invention will be described.

  The manufacturing method of the image forming body 10 shown in FIG. 2 is as follows.

(1) Peeling layer formation process Arbitrary resin is selected with coating methods, such as a well-known gravure, and the peeling layer 51 is formed on the plastic film used as the base material 50. FIG. The base material and release layer material used here are as described above. As a method of adding the release layer 51 to the base material 50, a liquid adhesive material having the above-described components may be applied by a known printing method such as roll coating or screen printing, or the above-described release layer material is used. A film-like one may be bonded by a known method such as laminating.

(2) Third Visible Light Transmitting Layer Pre-Bake Step The above-described resin material is applied on the release layer 51 by a known gravure coating method and prebaked such as heat drying to form the third visible light transmitting layer 52. Form. The pre-baking method is not particularly limited, and it is preferable to use a drying furnace that generates infrared rays or hot air. About time and temperature, what is necessary is just to select suitably by the used material.

  Note that the third visible light transmission layer 52 may be formed by laminating the above material into a film shape to the release layer 51 by a known method such as lamination. By using a film, it is possible to omit the application step and the pre-bake step.

  In this case, the film on which the third visible light transmission layer 52 is formed may be produced on the same line as the concavo-convex pattern formation in the next step or may be produced on a separate line. Since the pattern forming speed is different, it is preferable that the pattern is formed on a separate line. The resin layer has a thickness of about 1 to 10 times the height of the target concavo-convex pattern.

(3) Third visible light transmissive layer forming step The third visible light transmissive layer 52 that has undergone the third visible light transmissive layer pre-baking step is selectively provided with an uneven portion and a flat portion having a diffraction grating structure or a directional scattering structure. The third visible light transmission layer 52 is formed.

  As a method of selectively providing the uneven portion and the flat portion having a diffraction grating structure or a directional scattering structure in the third visible light transmission layer that has undergone the pre-baking process, there is a method using heated embossing. The heating embossing is a method of forming an uneven pattern by pressing an embossing roll around which an embossed original plate is wound against a third visible light transmitting layer. In general, an embossed original plate is formed on a metal plate with a predetermined pattern as an uneven pattern. The third visible light transmitting layer 52 and the embossed original plate are pressure bonded to each other by heating, and the patterned third visible light transmitting layer 52 is peeled off together with the base material to obtain a desired uneven pattern.

  The concave / convex pattern provided on the metal plate is based on the third information 23. The 3rd information 23 will not be specifically limited if it is the information which provides security, What is necessary is just to select suitably according to a use or purpose, such as a design and a design. In addition, based on the third information 23, a metal plate to be an original plate is produced using a known technique. Known materials and techniques may be used for the material used for the metal plate and the manufacturing method.

(4) Third Information Display Unit Forming Step Next, the third information display unit is formed by laminating the third coating 53 on the third visible light transmitting layer 52 formed with the concavo-convex pattern. Examples of the method of laminating the third coating 53 include vapor deposition methods such as vacuum evaporation and sputtering. At this time, in order to improve the adhesion between the third visible light transmission layer 52 and the coating 53, it is more preferable to perform a corona treatment on the third visible light transmission layer 52.

(5) 1st personal authentication information display part formation process Then, the 1st personal authentication information display part 1 is formed on the 3rd information display part 3 which displayed the 3rd information. As the method, a material having the components of the first visible light transmission layer 56 may be applied on the third coating 53 by a known printing method such as roll coating or screen printing, or the above components may be applied. The material on the film may be bonded together by a known method such as laminating to form the first visible light transmitting layer 56 of the first personal authentication information display unit 1.

  The first personal authentication information 21 displayed on the first personal authentication information display unit 1 displays personal authentication information of the same person as the second personal authentication information 22 and is used by the second personal authentication information display unit 54. A first information display unit for displaying the third information 23 is created using the digital data. Further, in addition to personal authentication information, backgrounds, designs, and designs may be given together to improve security and design.

  As a method of giving the first personal authentication information 21 to the first personal authentication information display unit 1, a method of printing directly or with an image receiving layer on the first visible light transmitting layer 56, or an image receiving layer on the transfer foil Etc., and after forming an information image on the image receiving layer, an indirect transfer method can be adopted in which the image is transferred onto a substrate. 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. Preferably, a thermal head system using a general color ribbon is used. The third information 23 such as an image such as a face image, a name, a date of birth, etc., or a character number is printed and written. Here, the image forming body 10 shown in FIG. 1 is completed.

  Also, although not shown this time, a transfer material to which a design, character information, design, etc. are added on another base material 60 in addition to the first personal authentication information 21 is created, and the first personal authentication information 21 is provided. The formed surface may be laminated on the second film 55 and transferred. The method is not particularly limited.

(6) Peeling layer forming step A base material 60 different from the base material used at the time of producing the third information display part is prepared, an arbitrary resin is selected by a coating method such as a known gravure, and the base material A release layer 57 is formed on the resulting plastic film. About the material of the base material 60 and the peeling layer 57 used here, what is necessary is just to select the thing similar to the base material 50 and the peeling layer 51. As a method for adding the release layer 57 to the substrate, a resin material having the above components may be applied by a known printing method such as roll coating or screen printing, or an adhesive material on a film having the above components. May be bonded together by a known method such as laminating.

(7) Second Visible Light Transmission Layer Prebaking Step Next, a second visible constituent transmission layer 54, which is a photo-curable resin, which becomes the second personal authentication information display unit 2 on the release layer 57, is formed by a known gravure. After coating by a coating method such as heat drying and prebaking such as heat drying, it is wound into a roll. At this time, in order to improve the adhesion between the release layer 57 and the second personal authentication information display unit 54, it is more preferable to perform corona treatment on the release layer 57. The prebaking method is not particularly limited, but it is preferable to use a drying furnace that generates infrared rays or hot air. About time and temperature, what is necessary is just to select suitably by the used material. More preferably, when the second visible light transmitting layer 54 is pre-baked and wound into a roll after being brought into a tack-free state in which the second visible light transmitting layer 54 does not adhere even if it is in contact with other materials, it is turned on-demand in the next step. Thus, it is preferable not only to easily process the diffraction grating and the uneven portion of the directional scattering, but also to reduce the possibility of material sticking and contamination by foreign matter when the second visible constituent transmission layer 54 is unwound.

  Next, the resin material is applied onto the release layer 57 by a known coating method such as gravure, and pre-baking such as heat drying is performed to form the second visible light transmission layer 54. The pre-baking method is not particularly limited, and it is preferable to use a drying furnace that generates infrared rays or hot air. About time and temperature, what is necessary is just to select suitably by the used material.

  More preferably, when the second visible light transmitting layer 54 is pre-baked by pre-baking and is wound on a roll after being brought into a tack-free state in which the second visible light transmitting layer 54 does not adhere even if it is in contact with other materials, This not only facilitates processing of diffraction gratings and directional scattering irregularities, but also reduces the risk of sticking between materials and contamination by foreign matter when the second visible constituent transmission layer 54 is rolled. preferable.

  At this time, in order to improve the adhesion between the release layer 57 and the second personal authentication information display unit 54, it is more preferable to perform a corona treatment on the release layer 57.

  Note that the second visible light transmission layer 54 may be formed by laminating a film of the above material by a known method such as lamination. By using a film, it is possible to omit the application step and the pre-bake step.

(8) Second visible light transmission layer photocuring step The second visible light transmission layer 54 is partially irradiated with light to partially cure the second visible light transmission layer 54.

  A pattern in which the pre-baked second visible light transmission layer 54 is partially irradiated with light is the second personal authentication information 22, which includes character information such as name, signature, blood type, date of birth, passport number, etc. Number information, ecological information such as facial images, fingerprints, veins, designs, designs, etc. are included. Although a face image is used in FIG. 1, there is no particular limitation, and one type of personal authentication information may be used, or a plurality of types may be combined. In addition, it is preferable to use UV light for light irradiation.

  As a procedure for creating the second personal authentication information 22 in the second personal authentication information display unit 2, first, personal authentication information is collected by a device such as a camera or a scanner and converted into digital data by a personal computer or the like. Face image data is created based on the digital data.

  Then, the second visible light transmission layer 54 prebaked using the image data obtained above is partially irradiated with light. For that purpose, the following methods are mentioned.

  Using face image data input by binarization of black and white from a personal computer, a light shielding mask is created by printing 82 on the transparent base material 81 for the light shielding mask by a general printing method such as a known thermal head method or ink jet method. To do.

  The material of the light shielding mask transparent substrate 81 is a highly transparent plastic sheet such as PET, and the thickness is not particularly limited, but is preferably about 50 μm to 125 μm.

  The material of the light shielding portion printed on the light shielding mask transparent substrate 81 is not particularly limited as long as it is a known black ink that does not transmit light. The thickness is not particularly limited, but is preferably about 1 μm to 3 μm.

  The printing method for printing the light shielding portion on the light shielding mask transparent substrate 81 is not particularly limited. For example, a known thermal head method, an ink jet method, or the like can be used.

  As another method, there is a method of displaying face image data input from a personal computer by binarization of black and white on a liquid crystal panel and using the liquid crystal panel as a light shielding mask.

  The type of liquid crystal is not particularly limited as long as it is a type that can transmit without absorbing UV, and the size is preferably at least large enough to project a face image. The converted face image is displayed on the liquid crystal panel in black and white binary, and the liquid crystal panel is used as a light shielding mask.

  Next, the surface of the second film 55 of the film prepared as described above and the light-shielding mask prepared as described above are brought into close contact with each other, and light irradiation 84 is performed through the light-shielding mask 83, thereby masking the resin of the second personal authentication information display unit 54. Is selectively cured into a pattern.

  Moreover, the pattern which makes resin partially harden | cure using a reflective display element as another aspect which irradiates light partially to the 2nd temporary hardening resin layer, and photocures a part of 2nd temporary hardening resin layer. Pattern exposure in which the resin is partially cured by exposure or laser beam scanning may be used.

  For pattern exposure in which the resin is partially cured using a reflective display element, specifically, a digital mirror device is preferably used. The digital mirror device is a type of display element in which a large number of micromirror surfaces (micromirrors) are arranged in a plane. When the digital mirror device to which the face image information is input is irradiated with UV light, the light of each mirror tilted to the ON state is magnified by another lens, and the input face image is UV light and the transparent mask 81 for the light shielding mask. Projected on top. Therefore, the projected portion is cured and pattern exposure can be performed in the same manner as described above.

  On the other hand, for pattern exposure in which the resin is partially cured by scanning with a laser beam, the pattern exposure is performed by scanning on the light shielding mask transparent substrate 81 with a UV light laser according to the pattern of the input face image, and partially curing. How to do it.

  Note that the method of selectively creating the uneven portion in the second visible light transmitting layer 54 may be used as a method of forming the uneven portion in the third visible light transmitting layer 52. This not only makes the structure of the image forming body more complicated, but also makes it easier to create the third information 23 on demand.

(9) Second visible light transmission layer forming step Pattern embossing is formed on the second visible light transmission layer. As a forming method, there is a method of using a metal plate having a solid pattern unevenness wound around an embossing roll. An embossing roller having a heated metal plate on the surface is pressed against the second visible light transmitting layer that has undergone the second visible light transmitting layer photocuring step, and external light is diffracted only on a portion that has not been photocured. The uneven portion to be scattered is provided, and after that, through light irradiation, drying, etc., the uneven portion and the flat portion are selectively patterned from the data based on the personal authentication information to form a completely cured second visible light transmission layer. .

  The material of the metal plate is not particularly limited, but nickel, copper and the like are common.

  The metal plate has a solid pattern of unevenness on the entire surface, but it is sufficient that a diffraction grating or directional scattering is generated, and the shape is not particularly limited. The purpose is appropriately selected depending on the application.

(10) Second Personal Authentication Information Display Unit Formation Step Next, the second film 55 is laminated on the resin layer to be the second personal authentication information display part 54 by the same method as the first film 53 formation method. To create a second personal authentication display. At this time, in order to improve the adhesion between the second personal authentication information display unit 54 and the second film 55, it is more preferable to perform a corona treatment on the second personal authentication information display unit 54.

  Note that the above-described process for producing the second personal authentication information display unit 2 may be used for producing the third information display unit 3. As a result, it is possible to produce an image forming body having higher security.

(11) Second personal authentication information display unit stacking step The second personal authentication information display unit 54 is stacked on the third information display unit 3 displaying the third information 23. In the present invention, the second personal authentication information display unit 54 is transferred from the surface having the first film 53. The method of laminating is not particularly limited to the transfer method, and a known laminating technique may be used. Here, the image forming body 10 shown in FIG. 2 is completed.

  As shown in FIG. 6, the image forming body 10 adjusts the arrangement of the first personal authentication information 21, the second personal authentication information 22, and the third information 23 so that at least two pieces of information overlap. It may be displayed. A personal authentication medium 11 using the image forming body 10 described above may be used.

  Further, as shown in FIG. 2 (d), the image forming body 10 created in the present invention is transferred onto the member 70 from the side having the first personal authentication display unit 1 and the second personal authentication display unit 2, and personal authentication is performed. The medium 11 may be used. The member in the present invention includes, for example, a booklet used to prove an individual's identity such as a passport, a bankbook, an employee card, and a student 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.

  Further, as shown in FIG. 5, a photograph or the like may be pasted on the member as the fourth personal authentication information 24, or the photograph information may be digitized and reproduced on the personal authentication medium 11. A method of printing by directly or directly providing an image receiving layer on a member, or an indirect transfer method in which an image receiving layer is provided on a transfer foil, an information image is formed on the image receiving layer, and then transferred onto a substrate. Can take. 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 member 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.

  FIG. 4 shows a schematic diagram of the manufacturing process of the image forming body in the second invention. As described in FIG. 2C, the roll-shaped film produced in the above-described production steps (1) to (4) is X, and the roll shape produced in the production steps (6) to (7). Let the film be Y.

  First, face image data input from a personal computer by binarization of black and white is printed on the light shielding mask transparent base material 81 by the printing unit 82.

  Further, letters and numbers such as a face photograph, name, date of birth, and the like are printed and written by the printing unit 89 by a thermal head method using a general color ribbon for the first visible light transmission layer 56 of the film X.

  At the same time, a second personal authentication information display unit 2 that forms irregularities in a desired pattern on the second visible light transmission layer 54 of the film Y in the same manner as the manufacturing method of FIG. 3 and displays a face image on demand. Form. In other words, individual information such as a desired face image can be obtained on demand by irradiating light through a light-shielding mask and by forming irregularities only on the uncured resin layer that has not been cured because light does not pass through the light-shielding part. It becomes possible to express. Thereafter, a high refractive index layer as the second coating 55 is vapor deposited by the high refractive index layer vapor deposition device 87 to develop a diffraction grating.

  Next, thermal transfer 92 is performed on the first visible light transmission layer 56 of the film X from the second personal authentication display unit side displaying the face image of the film Y, and only the base material 50 of the film Y is peeled off. Here, the image forming body 10 shown in FIG. 2 is completed.

  Finally, from the surface side of the image forming body 10 having the first personal authentication display portion 1 and the second personal authentication display portion 2, heat transfer 91 is performed on a member 70, for example, a paper for passport, and the base of the image forming body 10. The personal authentication medium 11 shown in FIG. 4 is completed by peeling only the material 50.

  Based on the above, personal authentication information can be created and displayed on demand, it is difficult to forge and tamper with high security, and it is determined whether or not the media is a legitimate owner (or user). Since a visible image can be used as a material, it has been found that an image forming body, a personal authentication medium, and a method for manufacturing the same can be provided that have an easy-to-find performance that facilitates visual deliberation.

  5 parts by weight of acrylic silicone (BYK3700 BYKChemie) is added to thermoplastic urethane acrylate resin (EBECRYL6202 manufactured by Daicel Cytec Co., Ltd.) with respect to 100 parts by weight of resin, and diluted with a solvent of MEK: toluene = 50: 50. Then, it was applied to one main surface of a 25 μm-thick PET film (Toray Lumirror) with a gravure roll coater so as to have a thickness of about 0.5 μm after drying to form a release layer.

  A thermoplastic urethane acrylate resin (EBECRYL6202 manufactured by Daicel Cytec Co., Ltd.) is diluted with a solvent of MEK: toluene = 50: 50, and dried on the other main surface of the PET film with a gravure roll coater so that the thickness becomes about 1 μm. To form a first visible light transmission layer for forming an uneven pattern.

  A general hologram metal plate in which a pattern was entirely expressed by a relief type diffraction grating was set in a roll embossing apparatus, and the roll mold was heated to 90 degrees. Next, the first visible light transmission layer of the film prepared above was pressed against a metal plate and peeled to form an uneven pattern of a relief type diffraction grating.

  After corona treatment on the concavo-convex pattern surface of the first visible light transmission layer, a 80 nm ZnS transparent film was formed on the concavo-convex pattern surface using a vacuum vapor deposition machine.

  Further, the surface of the ZnS transparent coating was subjected to corona treatment, and an ultraviolet curable urethane acrylate resin (UN-952, manufactured by Negami Kogyo Co., Ltd.) was diluted with a solvent of MEK: toluene = 50: 50, and a gravure was formed on the surface of the ZnS transparent coating. After drying with a roll coater, the coating was applied to a thickness of about 2 μm to form a second visible light transmission layer for forming an uneven pattern.

  After the corona treatment was applied to the second visible light transmission layer, a 80 nm ZnS transparent coating was formed using a vacuum vapor deposition machine.

  Using the film prepared as described above, processing was performed in the same apparatus according to the following procedure to prepare an image forming body and a personal authentication medium.

  First, a 50 μm PET substrate was separately prepared, and face image data input by binarization of black and white from a personal computer was printed on one surface of the PET substrate to create a light shielding mask.

  The light shielding mask and the ZnS transparent coating surface of the film were brought into contact with each other, and ultraviolet rays were irradiated through the light shielding mask to cure the resin of the second visible light transmitting layer into a mask pattern.

  The partially cured second visible light transmissive layer is heated and pressed against the metal plate of the relief-type diffraction grating with a solid pattern on the entire surface. Concavities and convexities were formed, and a face image was displayed by diffracted light.

  On the 2nd visible light transmission layer in which the uneven | corrugated pattern was formed, the polyester-type resin layer about 5 micrometers thick was roll-transferred as a 2nd visible light transmission layer. Here, a transfer foil of an image receiving layer prepared separately was used.

  Individual information such as a face photograph, name, date of birth, etc. was printed and written by a thermal head printing method using a general color ribbon for the second visible light transmission layer, and an image formed body was created.

  Heat transfer was performed on the passport paper from the individual information receiving layer side, and only the PET base material of the film was peeled off to prepare a personal authentication medium.

  As a result of observing the personal authentication medium, the face image expressed by the second personal authentication information display unit is very high-definition, and the printed face photograph and diffraction from the diffraction grating irregularities of the second personal authentication information display unit The face images displayed by light were visually recognized as the same. Therefore, it was found that true / false judgment can be easily made by visual observation, and that counterfeiting and alteration are difficult.

  5 parts by weight of acrylic silicone (BYK3700 BYKChemie) is added to thermoplastic urethane acrylate resin (EBECRYL6202 manufactured by Daicel Cytec Co., Ltd.) with respect to 100 parts by weight of resin, and diluted with a solvent of MEK: toluene = 50: 50. Then, it was applied to one main surface of a 25 μm-thick PET film (Toray Lumirror) with a gravure roll coater so as to have a thickness of about 0.5 μm after drying to form a release layer.

  A thermoplastic urethane acrylate resin (EBECRYL6202 manufactured by Daicel Cytec Co., Ltd.) is diluted with a solvent of MEK: toluene = 50: 50, and dried on the other main surface of the PET film with a gravure roll coater so that the thickness becomes about 1 μm. To form a first visible light transmission layer for forming an uneven pattern.

  A general hologram metal plate in which a pattern was entirely expressed by a relief type diffraction grating was set in a roll embossing apparatus, and the roll mold was heated to 90 degrees. Next, the first visible light transmission layer of the film prepared above was pressed against a metal plate and peeled to form an uneven pattern of a relief type diffraction grating.

  After corona treatment on the concavo-convex pattern surface of the first visible light transmission layer, a 80 nm ZnS transparent film was formed on the concavo-convex pattern surface using a vacuum vapor deposition machine.

  On the ZnS transparent film, a polyester resin was coated with a gravure roll coater so as to have a thickness of about 5 μm after drying, and a third visible light transmission layer was provided. Let the resulting film be X.

  On the other hand, 5 parts by weight of acrylic silicone (BYK3700 BYKChemie) is added to 100 parts by weight of resin to thermoplastic urethane acrylate resin (EBECRYL6202 manufactured by Daicel Cytec), and MEK: toluene = 50: 50 solvent. The film was diluted with a gravure roll coater and coated on one main surface of a 12 μm thick PET film (Toray Lumirror) to a thickness of about 0.5 μm after drying to form a release layer.

  Ultraviolet curable urethane acrylate resin (UN-952 manufactured by Negami Kogyo Co., Ltd.) is diluted with a solvent of MEK: toluene = 50: 50, and dried on the release layer surface with a gravure roll coater so as to have a thickness of about 2 μm. The coated layer was used as a second visible light transmission layer for forming an uneven pattern.

  After subjecting the individual information display OVD layer surface to corona treatment, a 80 nm ZnS transparent film was formed using a vacuum vapor deposition machine. Let Y be the film that was made.

  Using the films X and Y prepared as described above, processing was performed in the same apparatus according to the following procedure to prepare an image forming body and a personal authentication medium.

  First, individual information such as a face photograph, name, date of birth, etc. was printed by a thermal head printing method using a general color ribbon for the third visible light transmission layer of film X.

  On the other hand, a PET substrate having a thickness of 50 μm was separately prepared, and face image data input by binarization of black and white from a personal computer was printed on one surface of the PET substrate to create a light shielding mask.

  The light shielding mask and the ZnS transparent coating surface of the film Y were brought into contact with each other, and ultraviolet rays were irradiated through the light shielding mask to cure the resin of the second visible light transmission layer into a mask pattern.

  The partially cured second visible light transmissive layer is heated and pressed against the metal plate of the relief-type diffraction grating with a solid pattern on the entire surface. Concavities and convexities were formed, and a face image was displayed by diffracted light.

  Only the displayed portion of the face image of film Y is punched, and from the second visible light transmitting layer side, spot heat transfer is performed on the third visible light transmitting layer of film X, and only the base material of film Y is peeled off. Thus, an image forming body was prepared.

  The film was heated and transferred from the third visible light transmission layer (the side on which the film Y was transferred) of the film X to the paper surface for passport, and only the PET base material of the film was peeled off to prepare a personal authentication medium.

  Similarly, as a result of observing the personal authentication medium, the face image expressed by the second visible light transmission layer is very fine, and the diffracted light from the printed face photograph and the diffraction grating irregularities of the second visible light transmission layer The face images displayed by the above can be recognized as the same by visual observation. Therefore, it was found that true / false judgment can be easily made by visual observation, and that counterfeiting and alteration are difficult.

  The present invention relates to an image forming body that prints, prints, and draws face images and fingerprints, which are the key to personal identification, and in particular, personal authentication information such as image information such as an image of a legitimate owner's face and fingerprints. Is created and configured on demand with a diffraction grating and directional scattering, making counterfeiting and tampering difficult, and using the image forming body for personal authentication media such as passports and ID cards. More accurate authentication is possible for examiners who perform personal identification.

DESCRIPTION OF SYMBOLS 1 1st personal authentication information display part 2 2nd personal authentication information display part 3 3rd information display part 10 Image forming body 11 Personal authentication medium 21 1st personal authentication information 22 2nd personal authentication information 23 3rd information 24 Fourth personal authentication information 50, 60 Base material 51, 57 Peeling layer 52 Third visible light transmission layer 53 Third coating 54 Second visible light transmission layer 55 Second coating 56 First visible light transmission layer 70 Member 81 Light shielding mask Transparent base material 82, 89 Printing unit 83 Shading mask 84, 86 Pattern exposure device 85 Metal plate 87 Deposition device 88, Transfer unit 90 Drying unit 91 Transfer unit 92 Transfer unit X Film Y Film

Claims (10)

A substrate;
A release layer;
A third information display unit for displaying third information by diffracting or scattering external light;
A second personal authentication information display unit for displaying the second personal authentication information by diffracting or scattering external light;
A first personal authentication information display unit for displaying first personal authentication information in a colored manner;
Is a method for producing an image forming body, wherein at least the layers are laminated in this order,
A method for producing an image forming body, comprising at least the following steps.
(1) A release layer forming step of forming a release layer on one surface of the substrate.
(2) A third visible light transmitting layer pre-baking step in which a transparent resin is applied on the release layer and prebaked to form a third visible light transmitting layer.
(3) A third visible light transmitting layer in which a concave and convex portion having a diffraction grating structure or a directional scattering structure and a flat portion are selectively provided on the third visible light transmitting layer that has undergone the third visible light transmitting layer pre-baking step. Third visible light transmission layer forming step to be formed.
(4) A third information display unit forming step of forming a third information display unit by laminating a third film on the third visible light transmitting layer formed through the third visible light transmitting layer forming step.
(5) A second visible light transmission layer is formed by applying a photocurable transparent resin to the surface of the third information display unit formed through the third information display unit formation step and prebaking the second visible light transmission layer. Visible light transmission layer pre-baking step.
(6) A second visible light transmissive layer photocuring step of partially irradiating the second visible light transmissive layer with light to partially cure the second visible light transmissive layer.
(7) An uneven portion and a flat surface that diffracts or scatters external light by pressing a heated embossing roller on the second visible light transmission layer that has undergone the second visible light transmission layer photocuring step, light irradiation, and drying. A second visible light transmitting layer forming step of forming a second visible light transmitting layer provided with a portion selectively.
(8) the second second personal identification information display portion forming the second personal identification information display unit to the formed through a visible light transmission layer forming step the second visible light transmission layer are laminated second target film Forming process.
(9) A first personal authentication information display part forming step of forming a personal authentication information part for displaying the first personal authentication information in a colored manner on at least a part of the second personal authentication information display part. A substrate;
A release layer;
A third information display unit for displaying third information by diffracting or scattering external light;
A first personal authentication information display unit for displaying 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;
Is a method for producing an image forming body, wherein at least the layers are laminated in this order,
A method for producing an image forming body, comprising at least the following steps.
(1) A release layer forming step of forming a release layer on one surface of the substrate.
(2) A third visible light transmitting layer pre-baking step in which a transparent resin is applied on the release layer and prebaked to form a third visible light transmitting layer.
(3) A third visible light transmitting layer in which a concave and convex portion having a diffraction grating structure or a directional scattering structure and a flat portion are selectively provided on the third visible light transmitting layer that has undergone the third visible light transmitting layer pre-baking step. Third visible light transmission layer forming step to be formed.
(4) A third information display unit forming step of forming a third information display unit by laminating a third film on the third visible light transmitting layer formed through the third visible light transmitting layer forming step.
(5) forming a first personal authentication information display unit that displays the first personal authentication information in a colored manner on at least a part of the surface of the third information display unit formed through the third information display unit formation step; 1 personal authentication information display part formation process.
(6) A step of forming a release layer on one surface of another substrate.
(7) A second visible light transmitting layer pre-baking step in which a photocurable transparent resin is applied on the release layer and prebaked to form a second visible light transmitting layer.
(8) A second visible light transmissive layer photocuring step of partially irradiating the second visible light transmissive layer with light to partially cure the second visible light transmissive layer.
(9) An uneven portion and a flat surface that diffracts or scatters external light by pressing a heated embossing roller on the second visible light transmitting layer that has undergone the second visible light transmitting layer photocuring step, light irradiation, and drying. A second visible light transmitting layer forming step of forming a second visible light transmitting layer provided with a portion selectively.
(10) Forming a second personal authentication information display unit that forms a second personal authentication information display unit by laminating a second film on the second visible light transmission layer formed through the second visible light transmission layer formation step. Process.
(11) the upper to the third information display unit, the step of transferring the second personal identification information display section, from the surface having the second target film. The second visible light transmission layer photocuring step comprises
Forming a light-shielding mask that displays a desired individual information pattern on a transparent substrate by providing a transmission part and a light-shielding part,
By irradiating light through the light shielding mask,
The method for producing an image forming body according to claim 1, further comprising pattern exposure in which the transparent resin is partially cured. The second visible light transmission layer photocuring step comprises
Forming a light-shielding mask that displays a desired individual information pattern on a transmissive liquid crystal panel by providing a transmissive part and a light-shielding part,
By irradiating light through the light shielding mask,
The method for producing an image forming body according to claim 1, further comprising pattern exposure in which the transparent resin is partially cured. The second visible light transmission layer photocuring step comprises
The method for producing an image forming body according to claim 1, further comprising pattern exposure in which a resin is partially cured using a reflective display element such as a digital mirror device. The second visible light transmission layer photocuring step comprises
The method for producing an image forming body according to claim 1, further comprising pattern exposure in which the resin is partially cured by scanning with a laser beam.   The third coating film is selected from any one of a third high refractive index layer having a higher refractive index than the third visible light transmitting layer and a third reflective layer reflecting visible light. The method for producing an image forming body according to any one of 1 to 2.   The second coating film is selected from either a second high refractive index layer having a higher refractive index than the second visible light transmission layer or a second reflection layer reflecting visible light. The method for producing an image forming body according to any one of 1 to 2.   9. A method for producing an image forming body according to claim 1, further comprising a step of creating a personal authentication medium by transferring the image forming body onto a member. Production method.   The method for producing a personal authentication medium according to claim 9, further comprising a step of forming a fourth personal authentication information display unit that displays fourth personal authentication information in a colored manner on at least a part of the member.