JP2002307878A - Forgery-preventing image forming body and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a forgery preventive image forming body (image forming body) and the manufacturing method for the same necessitating high security represented by a passport, a visa, a card or the like, and provided with preventive property with respect to unfairness, such as falsifying, forging, alteration or the like, while being provided with easily finding performance even when the unfairness is done. SOLUTION: The forgery preventive image forming body is provided on a substrate sequentially with an image forming layer and an OVD layer on which a diffraction grating structure is formed, while the diffraction grading structure of the OVD layer is changed selectively and a pattern is formed in accordance with the existence or non-existence of the diffraction effect of the OVD layer. Especially, the image of face or an image with respect to the fingerprint information of the right owner of the forgery preventing image forming body are recorded while an image corresponding to the record are provided in the pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a booklet such as a passport or a visa, or an image forming body provided with personal information on a card, and more particularly to image information such as a face photograph or a fingerprint image, a name, and a date of birth. An OVD layer such as a hologram or a diffraction grating structure is provided above the personal information such as the date and the like printed thereon, and a pattern related to a formed facial photograph or fingerprint image is provided on the OVD layer. In addition, the present invention relates to a kind of information recording medium (forgery prevention image forming body) that makes it difficult to forgery such as forgery or falsification, and is easy to find even if such forgery is performed.

[0002]

2. Description of the Related Art Various security methods have been proposed for media related to personal authentication, such as passports, visa stickers, and cards. For example, according to the so-called ICAO regulations, passports currently used must be readable by both visual and optical character identification. (ICAO is International Civil Av
The material used for passports and security are at the discretion of each country, and generally used as a security function are chemical reactants that react with organic solvents, iris-colored pearl chips, fibers ( Silk or synthetic fiber, visible or invisible,
Fluorescent or non-fluorescent), security yarns on films printed with holograms or micro-characters, paper containing watermarks, fading inks, fluorescent inks, heat-sensitive inks, inks that change optically (such as OVI), etc. Various techniques such as fine line printing, rainbow printing, intaglio printing, and pixel printing are incorporated to simultaneously improve security and aesthetics.

[0003] A face photograph as visual confirmation information for a passport has conventionally been a photograph attached with a photograph. In recent years, however, there has been a tendency to digitize photographic information and reproduce it in a passport. As a method of reproducing the image on the passport,
A thermal transfer recording method using a transfer ribbon using a resin type melting type or a wax melting type in which a sublimable (heat transferable) dye or a pigment is dispersed, or an electrophotographic method is being studied.

Some visa stickers have been devised, for example, by using cutouts provided in a fixed pattern so that it is difficult to peel off the sticker itself even if it is to be peeled off.

[0005] Further, as an image display body containing such kind of personal recognition data, an image pattern formed on the basis of image data on a card base material such as polyvinyl chloride or PET-G, or An OVD image (OVD is an abbreviation for so-called Optical Variable Device) represented by an image obtained by using a hologram, a diffraction grating, or an optical thin film (an effect such as a color shift can be obtained by optical design) in addition to the above image pattern. What is provided is known.

[0006] The OVD technology of these holograms and diffraction gratings requires advanced manufacturing technology and is difficult to duplicate, so that credit cards, ID cards,
It has been used for cards such as prepaid cards. Furthermore, due to its high decorativeness, it is often used for packaging materials, books, pamphlets, POPs, and the like. As a means for attaching these OVDs to an article, a method of transfer-forming using a transfer foil has conventionally been adopted. This type of transfer is configured by sequentially laminating a release layer, a relief layer in which an image pattern of a hologram or a diffraction grating is formed on a support, a reflective layer formed by a known thin film forming means, and an adhesive layer. Are known. These OVD patterns (holograms and diffraction grating patterns) engraved on the transfer foil are copied in large quantities by a well-known method of duplicating a fine uneven pattern on a nickel press plate and heating and pressing the relief layer. .

Further, the reflective layer is formed by forming a transparent substance having a different refractive index by a known thin film forming means such as a vacuum evaporation method (hereinafter referred to as a transparent thin film layer). It is a known technique.
In this case, it is apparent from an optical point of view that the larger the difference in refractive index between the relief layer and the transparent thin film layer, the larger the reflectance. However, here, there is a relationship of (refractive index of relief layer) <(refractive index of transparent thin film layer).

The method of forming the OVD transfer foil will be briefly described. FIG. 1 is a sectional view showing a configuration example of a transparent OVD transfer foil. The OVD transfer foil has a layer that reflects light while transmitting light, that is, a transparent thin film layer, and has an excellent eye-catching effect without impairing the design such as printing on a substrate that is a transfer target. it can. Hereinafter, the configuration will be described with reference to the cross-sectional view of FIG. A releasable protective layer 12 is formed on a support 11, and a relief forming layer 13 provided with an OVD pattern such as a hologram or a diffraction grating and a transparent thin film layer 14 are formed on the releasable protective layer 12. On the transparent thin film layer 14, an adhesive layer or an image-receiving layer / adhesive layer 15 is formed.

The relief-forming surface of the OVD layer is located on the opposite side of the support, and when transferred to the surface of an article, the release layer is peeled off at the interface with the support and transferred to the article to protect the article. Since it also functions as a layer, it is also referred to as a “peelable protective layer”. Further, the layers that move to the article side except for the support are collectively referred to as “transfer foil”.

Each drawing schematically represents the structure of the transfer foil and the like, and the dimensions such as the thickness of each layer do not correspond to actual products.

For these holograms or diffraction grating structures, a relief type master plate composed of a fine uneven pattern is generally prepared by an optical imaging method or electron beam drawing, and then the uneven pattern is duplicated by electroplating. A large number of copies are made by a well-known method of duplicating the obtained nickel press plate and heating and pressing the press plate on the relief forming layer.

The hologram or diffraction grating structure obtained in this manner can be used as a forgery prevention means for a credit card, cash card, membership card, employee card,
Various cards such as prepaid cards, driver's licenses, various paper tickets such as gift certificates, gift certificates, stock certificates, various forms such as application forms, receipts, copy slips, and various types of passports, passbooks, pension notebooks, etc. In addition to booklets, they are used by attaching them to a part or the whole of display uses such as books and notebook covers and panels. Incidentally, the whole described in the present invention is:
This is a conceptual meaning, regardless of pattern, pattern, etc., includes those affixed in spots, stripes, or lattices, and those affixed with fixed or irregular halftone dots. .

Although such an OVD transfer foil has a sufficient function as an anti-counterfeiting effect, it is formed by thermally transferring an OVD transfer layer onto an image such as a face photograph after forming an image such as a passport. Therefore, at present, when the forgery technique has been developed, there is a possibility that the transfer layer may be once removed by some method, the image data or the like may be altered, and then the OVD transfer foil may be mounted again.

In general, printers such as a sublimation transfer system, a hot-melt transfer ribbon system, and an electrophotographic system as means for forming image information such as a face photograph are widely distributed. In recent years, forming a new image is not always difficult.

[0015]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and requires a high security such as a passport, a visa or various kinds of cards. In particular, it is an image formed body on which an image is also formed, and it shows a preventive performance against fraudulent acts such as forgery, falsification or falsification, and even if such fraudulent is done, if you look at a suspected fraudulent image formed body An object of the present invention is to provide a forgery-preventing image forming body (image forming body) having easy-to-find performance so that it can be easily found, and a method of manufacturing the same.

[0016]

According to the first aspect of the present invention, an image forming layer and an OVD layer having a diffraction grating structure formed on a substrate are laminated at least in this order. A forgery-preventing image forming body, wherein a pattern is formed by a difference between a region having a diffraction effect and a region having no diffraction effect of the OVD layer by selectively deforming or destroying the diffraction grating structure of the layer. It is.

According to a second aspect of the present invention, in the image forming layer, at least one of a face image and an image related to fingerprint information of a legitimate owner of the forgery prevention image forming body is recorded. 2. The forgery prevention image forming body according to claim 1, wherein the pattern is provided with an image corresponding to at least one of the face image and the image related to the fingerprint information.

According to a third aspect of the present invention, the image formed on the image forming layer and the pattern formed by selectively deforming or destroying the diffraction grating structure have a corresponding relationship. 3. The forgery according to claim 1, wherein the forged image has one or more images, and the images in the corresponding relationship are formed so as to partially or completely overlap each other. This is a prevention image formed body.

According to a fourth aspect of the present invention, the anti-counterfeit image forming body according to any one of the first to third aspects, wherein the pattern is formed in a state where minute dot shapes are connected. It is.

According to a fifth aspect of the present invention, the forgery prevention image forming body according to any one of the first to third aspects, wherein the pattern is formed in a state where minute dot shapes are connected. It is.

According to a sixth aspect of the present invention, in the layer structure of the OVD layer, a light-to-heat conversion layer is provided at a position adjacent to the diffraction grating structure or at a position close to the diffraction grating structure. The forgery-preventing image forming body according to any one of claims 1 to 5, characterized in that:

According to a seventh aspect of the present invention, there is provided a forgery-preventing image forming body in which an image forming layer and an OVD layer on which a diffraction grating structure is formed are laminated at least in this order on a substrate. By selectively deforming or destroying the diffraction grating structure of the OVD layer by selectively applying light or at least one of heat, a region having a diffraction effect and a region having no diffraction effect of the OVD layer can be obtained. A method for producing a forgery-preventing image forming body, characterized by forming a pattern based on a difference.

The invention according to claim 8 is the method according to claim 7, wherein the pattern is formed in a state where minute dot shapes are connected.

According to a ninth aspect of the present invention, when the diffraction grating structure of the OVD layer is selectively deformed or destroyed to form the pattern, the surface layer portion of the substrate on the image forming layer side also includes the OVD layer. 9. The method according to claim 7, wherein the layer is deformed or destroyed at the same time as the diffraction grating structure of the layer.

[0025]

According to the present invention, an OV having at least an image forming layer and a diffraction grating structure on a substrate of a passport booklet, a passport sticker or a card.
In the image forming body in which the D layer is laminated in this order,
By selectively applying one or both of light and heat, and selectively deforming or destroying the diffraction grating structure of the OVD layer, by forming a pattern on the OVD layer, unauthorized manipulation such as information tampering can be achieved. It makes the act extremely difficult.

That is, if the information formed on the passport booklet, the passport sticker, the cards, and the like is to be illegally changed, the OV provided on the information stamp screen is changed.
Although it is necessary to remove the D layer, the OVD layer is a laminate of extremely thin layers, and it can be said that it is practically difficult to remove the OVD layer from the information stamp screen while maintaining the shape and function. By using this, the OVD layer is temporarily removed, the information on the stamp screen is falsified, and then
Even when it becomes possible to stack layers, the O
If the image information linked to the information formed on the stamp screen on the VD layer is formed on the OVD layer, it can be easily determined that the information has been tampered.

Further, the OVD layer is destroyed and removed, and a new OVD layer is formed.
When attempting to forge the VD layer, the technology for creating the hologram or the diffraction grating formed product itself is extremely advanced, and it is not easy to forge, and furthermore, the individual information is stored in the O.D.
Recording on the VD layer can increase the difficulty of forgery.

[0028]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a cross-sectional view illustrating a basic configuration of a passport booklet and the like according to the present embodiment. The base material 27 made of a material such as paper may have at least one surface thereof subjected to a conventionally known intaglio printing, fluorescent printing, OVI printing, security printing such as a pearl chip, a picture printing 26, or the like. Security technologies can be provided in combination.

In the method of forming an information image, a method of printing directly or on an image receiving layer provided on a base material,
An indirect transfer method can be adopted in which an image receiving layer or the like is provided on a transfer foil having a VD layer, an information image is formed on the image receiving layer, and then transferred onto a substrate. Means for forming an information image at this time include known image forming methods such as a silver salt method, a sublimation transfer method, a hot-melt transfer method, a resin-type pigment transfer method, an electrophotographic method, an inkjet method, and a printing method. Means can be used. Further, a primer layer for improving the adhesiveness of the transfer foil may be provided on the base material as the transfer object.

In FIG. 2, using a resin type pigment transfer system,
FIG. 1 shows a structure in which an image is formed using an indirect transfer method in which an information image is formed in advance on the OVD transfer foil side and then transferred to a passport booklet or the like. As shown in FIG. 1, peelable protective layers 12 and 21 are formed on a support 11,
OVD layers 22 (13 & 14) are formed on the layers 2 and 21, and the image receiving layer / adhesive layers 15 and 23 are further formed thereon.

Here, the support 11 is required to have heat resistance and strength so as not to be softened and deformed by the heat pressure in thermal transfer. The materials include synthetic resins such as polyvinyl chloride, polyester, polycarbonate, polymethyl methacrylate, polystyrene, polyethylene, polyethylene terephthalate, polyethylene naphthalate, polypropylene, polyvinyl alcohol, polyvinylidene chloride, and polyimide, natural resins, paper, and synthetic resins. A material selected alone from paper or the like, or a complex selected from the above and combined can be used, but is not limited thereto. Also,
The thickness is 2 to 100 μm in consideration of operability and workability.
Although a size of about 6 to 50 μm is preferable in consideration of handling properties such as transfer suitability and workability.

In this experiment, a 16 μm polyethylene terephthalate film was used, and a peelable protective layer having the following composition ratio was applied and dried to 1.5 μm.
Note that the peelable protective layers 12 and 21 are formed of the OVD layer 22 (13 &
14) and the image receiving layer / adhesive layers 15 and 23 are provided to more effectively transfer them to the transfer-receiving body side. Furthermore, when it becomes a final product, it functions as a protective layer. Acrylic resin 30 parts Polyester resin 5 parts Polyethylene powder 5 parts Toluene 40 parts Methyl ethyl ketone 40 parts Methyl isobutyl ketone 20 parts

The releasable protective layers 12 and 21 may be any of a thermoplastic resin, a thermosetting resin, an ultraviolet ray or an electron curable resin as long as the material can be easily peeled off from the support. A thermoplastic resin is preferable in consideration of the foil breaking property. Examples include thermoplastic polyacrylate resins, chlorinated rubber resins, vinyl chloride-vinyl acetate copolymer resins, cellulose resins, chlorinated polypropylene resins, epoxy resins, polyester resins, nitrocellulose resins, slurylene Resins such as acrylate resins, polyether resins, and polycarbonate resins can be used alone or in combination. In addition, in consideration of the cutting properties of the foil and the abrasion resistance, various waxes such as petroleum wax and vegetable wax, higher fatty acids such as stearic acid and metal salts and esters thereof, lubricants such as silicone oil, Teflon powder, polyethylene Organic fillers such as powder, silicone-based fine particles and acrylonitrile-based fine particles, and inorganic fillers such as silica fine particles can also be added. The releasable protective layers 12 and 21 need not be provided when the support 11 itself has releasability or when the support itself has been subjected to a release treatment. However, in this case, it is also possible to impart abrasion resistance to the layer that becomes the outermost surface after the transfer (in the present embodiment, the OVD layers 22 (13 & 14)), or to provide a protective layer after the transfer. The thickness of the peelable protective layer can be formed in the range of 0.1 to 20 μm, and is not particularly limited when the protective layer is provided later.

Next, in this embodiment, the OVD layer 22 (13 &
14) A relief transparent hologram was used as an example. The manufacturing method will be described below. The relief forming layer 13 provided on the releasable protective layers 12 and 21 has a hologram relief forming surface on the surface opposite to the releasable protective layers 12 and 21 and has a transparent thin film layer 14 or a fine pattern on the relief forming surface. Metal thin film layer is formed. The relief forming surface can be formed by heating and pressing a nickel press plate on which a fine uneven pattern constituting the relief hologram is formed on the relief forming layer. Further, the relief forming layer may be any as long as it allows the hologram pattern to pass through the layer surface (the above-described relief forming surface) or within the layer. In addition, the relief forming layer may be finely divided by two-beam interference or a diffraction grating by an electron beam (EB). A grating hologram, a Lippmann hologram, or the like having an uneven shape can be applied.

The transparent thin film layer is a transparent material having a higher refractive index than that of the relief forming layer (refractive index n = 1.3 to 1.7), such as an inorganic material as shown in Table 1 below. Can be used. Further, the transparent thin film layer may be formed by laminating a plurality of layers, or may be a combination of layers having different refractive indices, or a multilayer film in which layers having a high refractive index and layers having a low refractive index are alternately laminated.

[0036]

[Table 1]

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

Further, in addition to providing the above-mentioned transparent thin film layer as a light reflection layer, Al, Sn, Ni, Co, Cr, F
A metal such as e, Ag, or Au may be formed as a discontinuous thin film.

Here, the relief forming layer has good embossing formability, hardly causes press unevenness, obtains a bright reproduced image, and has the peelable protective layers 12 and 21 and the transparent thin film layer 14.
A resin having good adhesiveness to the resin is good. Here, a composition having the following compounding ratio is used, and the thickness after drying is 1.0 μm.
It was formed to become. Polyurethane resin ... 30 parts Infrared absorber ... 0.5 parts Methyl ethyl ketone ... 70 parts Toluene ... 30 parts The relief forming surface was formed by setting the plate surface temperature of the above-mentioned press plate to 160 ° C for such a composition.

The relief forming layer 13 may be made of a thermoplastic resin such as a polycarbonate resin, a polystyrene resin, or a polyvinyl chloride resin, an unsaturated polyester resin, or the like.
It has a thermosetting resin such as melamine resin, epoxy resin, urethane (meth) acrylate, polyol (meth) acrylate, melamine (meth) acrylate, triazine (meth) acrylate or a mixture thereof, and further has a radical polymerizable unsaturated group. Thermoformable materials and the like can be used, and materials other than those described above can also be used as long as they are stable enough to form an OVD image.

Although the infrared absorbing agent is added to the relief forming layer 13 here, the invention is not limited to the relief forming layer.
As long as it is in the vicinity, it may be added to any layer, or a layer containing an infrared absorber may be provided as an individual layer. As an example of the infrared absorbing agent used here, any of an organic substance and an inorganic substance can be used as long as it has an absorption in an infrared region, but a preferable example is an infrared ray having little absorption in a visible region. Glass materials such as phosphate glass and sulfate glass, which are obtained by pulverizing and pigmenting absorption glass or heat ray absorption glass, can be exemplified.

The transparent thin film layer 14 is a transparent material for transmitting the information of the relief forming layer, and has a thickness of 50 here.
nm of ZnS was provided by a vacuum evaporation method.

Next, on the transparent thin film layer 14, an image receiving layer / adhesive layer 15, 23 composition having the following compounding ratio was used.
Coating and drying were performed so as to be 0 μm. (Drying conditions: 100
° C, 5 min. ) Urethane resin 20 parts Butyral resin 10 parts Methyl ethyl ketone 60 parts Toluene 60 parts

The image-receiving / adhesive layers 15 and 23 may be made of, for example, polyester resin, vinyl chloride resin such as polyvinyl chloride or vinyl chloride-vinyl acetate copolymer, polyurethane resin, epoxy resin, chlorinated polypropylene, acrylic Resin, polystyrene, polyvinyl benzene, styrene-butadiene copolymer resin, vinyl resin such as styrene and alkyl methacrylate (where the alkyl group has 2 to 6 carbon atoms), various rubber-based materials, and the like. It can be used alone or as a mixture of two or more, but is not limited thereto.

Further, in order to prevent discoloration of the coloring material constituting the image due to light, an ultraviolet absorber having a maximum absorption wavelength of 250 nm to 400 nm may be added to the image receiving layer / adhesive layers 15 and 23. Examples of such ultraviolet absorbers include salicylic acid-based ultraviolet absorbers such as phenyl salicylate, pt-butylphenyl salicylate, p-octylphenyl salicylate, and the like, 2,4-dihydroxybenzophenone, 2-hydroxybenzophenone, 2-hydroxy -4-octoxybenzophenone, 2-hydroxy-4
-Benzophenone ultraviolet absorption such as dodecyloxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2-hydroxy-4-methoxy-5-sulfobenzophenone Agent, 2- (2'-hydroxy-5'-methylphenyl) benzotriazole, 2
-(2'-hydroxy-5'-t-butylphenyl) benzotriazole, 2- (2'-hydroxy-3'-t-butyl-5'-methylphenyl) benzotriazole,
A benzotriazole ultraviolet absorber such as-(2'-hydroxy-3 ', 5'-di-t-amylphenyl) benzotriazole, 2-ethylhexyl-2-cyano-3,3'
-Diphenyl acrylate, ethyl-2-cyano-3,
Examples include cyanoacrylate-based ultraviolet absorbers such as 3-diphenylacrylate. In addition, TiO ₂ or ZnO
An inorganic ultraviolet shielding agent of a fine powder such as a system may be used. still,
The mixing ratio of the ultraviolet absorber may be in the range of 5 to 40 parts by weight with respect to 100 parts by weight of the composition comprising the resin and the like constituting the adhesive layer.

Further, in consideration of the foil breaking property during thermal transfer,
Adding various waxes, higher fatty acids such as stearic acid and their metal salts and esters, plasticizers, organic fillers such as Teflon powder, polyethylene powder, silicone-based fine particles and acrylonitrile-based fine particles, and inorganic fillers such as silica fine particles. Can also.

A resin-type pigment ribbon is superposed on the thus obtained OVD transfer foil on the image-receiving layer / adhesive layer 15 and 23, and a face photograph image and a fingerprint image are printed using a thermal head. After forming an information image by carrying out, a passport booklet or a sticker for passports and the like are superposed on each other, and a heat roll is pressed and heated from the OVD transfer foil side (heating temperature; 125 ° C.).
The support 11 of the OVD transfer foil was peeled off, and a passport booklet or the like as a forgery prevention image forming body was manufactured.

With respect to the passport booklet sample obtained as described above, the OVD layer 22 (based on the same image information as the fingerprint image) is positioned at a position substantially overlapping the fingerprint image using a laser marker. 13) and 14) were deformed to form a fingerprint image.

[0049]

As described above, in a passport booklet or passport sticker or card,
After forming an information image and providing an OVD layer having a diffraction grating structure, the OVD layer is selectively deformed or destroyed by selectively applying light and / or heat to the OVD layer. By forming a pattern, it is possible to supply an information image formed product that is extremely difficult to forge, falsify, falsify, or the like.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an OVD transfer foil.

FIG. 2 is a cross-sectional view of a passport sample.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Support body 12, 21 ... Removable protective layer 13 ... Relief forming layer 14 ... Transparent thin film layer 15, 23 ... Adhesion layer or image receiving layer and adhesion layer 22 ... OVD layer 24 ... Information image layer 25 ... Primer layer 26 ... Security printing layer 27 ... Base material 28 ... Relief deformation part

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C005 HA01 HB02 JB01 JB06 JB08 JB09 JB11 JB14 JB25 JB40 KA37 KA48 LA11 LA20 LA27 LA28 LA30 2K008 AA13 FF12 FF13 FF14

Claims (9)

[Claims] An image forming layer and an OVD layer on which a diffraction grating structure is formed are laminated at least in this order on a substrate, and the diffraction grating structure of the OVD layer is selectively deformed or destroyed. A forgery-preventing image forming body characterized in that a pattern is formed by a difference between a region having a diffraction effect of the OVD layer and a region having no diffraction effect. 2. The image forming layer has recorded thereon at least one of a face image and an image relating to fingerprint information of a legitimate owner of the forgery prevention image forming body, and the pattern includes The forgery prevention image forming body according to claim 1, wherein an image corresponding to at least one of a face image and an image related to fingerprint information is provided. 3. An image provided in the image forming layer and an image corresponding to the pattern formed by selectively deforming or destroying the diffraction grating structure are defined as one image.
3. The forgery-preventing image forming apparatus according to claim 1, wherein the corresponding images are formed so as to partially or entirely overlap each other. body. 4. The forgery-preventing image forming body according to claim 1, wherein the pattern is formed in a state where minute dot shapes are connected. 5. The method according to claim 1, wherein the surface layer on the image forming layer side of the substrate is
The forgery prevention according to any one of claims 1 to 4, wherein a portion located below a portion where the diffraction grating structure of the OVD layer is selectively deformed or broken is deformed or broken. Image forming body. 6. A layer structure of the OVD layer includes a light-to-heat conversion layer at a position adjacent to the diffraction grating structure or at a position close to the diffraction grating structure. 6. A forgery-preventing image-formed body according to any one of 1 to 5. 7. An image forming layer and an OVD layer on which a diffraction grating structure is formed on a substrate, at least either light or heat with respect to a forgery-preventing image forming body laminated in this order. Forming a pattern based on a difference between a region having a diffraction effect and a region having no diffraction effect of the OVD layer by selectively applying one or the other to selectively deform or destroy the diffraction grating structure of the OVD layer. A method for producing a forgery-preventing image-formed body, characterized by comprising: 8. The method according to claim 7, wherein the pattern is formed in a state where minute dot shapes are connected. 9. When forming the pattern by selectively deforming or destroying the diffraction grating structure of the OVD layer, the surface portion of the substrate on the side of the image forming layer is simultaneously formed with the diffraction grating structure of the OVD layer. The method for producing a forgery-prevented image-formed body according to claim 7, wherein the forged anti-counterfeit image-formed body is deformed or destroyed.