JP2011027832A - Display body, transfer foil, and forgery prevention medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display body having higher visual effect and allowing feature recognition by either of a human visual sense and a reading machine for easy authentication determination, and to provide a display body having high eye-catching effect based on novel visual effect impossible by a conventional display body and improving visibility of an image by diffraction light for exhibiting high designability. <P>SOLUTION: In a minute structure formation layer, a minute relief part having a minute relief structure and a diffraction grating part having a diffraction grating are arranged adjacent to each other, and a reflecting layer is layered in at least a portion of the minute relief part and/or the diffraction grating part. The minute relief part mainly emits a primary diffraction light, and a visible light reflectance of the minute relief part is 20% or less, while a visible light reflectance of the diffraction grating part is 50% or more. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a display body, a transfer foil, and an anti-counterfeit medium suitable for anti-counterfeit applications.

  Conventionally, as a means for preventing counterfeiting, a fine structure or color tone change that cannot be easily imitated, or an optical phenomenon that is only in combination with another optical functional film as a discriminator is observed. Various aspects have been put into practical use with the advancement of technology, such as such a structure, or a structure in which a fixed pattern or the like can be read only by a dedicated reader.

Among them, a hologram and a diffraction grating image are given as one of the most utilized because of practical ease of operation.
A hologram is produced by providing a fine concavo-convex pattern and a refractive index distribution by an optical photographing method such as two-beam interference. On the other hand, the diffraction grating image is produced using a pixel in which a diffraction grating is arranged in a minute area.
Both holograms and diffraction grating images are difficult to counterfeit, difficult to copy with color copiers, etc., and are excellent in design, so they are widely used for credit cards, ID cards, various securities, certificates, etc. ing.

  However, in actual operation, the authenticity of holograms and diffraction grating images is left to the human eye, so even if it is a microscopically fake product, all people can accurately and accurately authenticate with the naked eye. It is not easy to make a false determination.

Further, as the holograms and diffraction grating images as described above are distributed and popularized, the forgery technology advances, so that a display body that is more difficult to forge is demanded.
For example, a hologram or diffraction grating having a surface relief structure may be duplicated by contact exposure. In order to prevent forgery, for example, Japanese Patent Application Laid-Open No. H10-228667 describes a technique for improving the arrangement of fine patterns having a diffraction effect. This security device makes it difficult to know the presence or absence of security information so that information cannot be read visually.

Therefore, since it is difficult to determine whether or not the product is genuine, a reading machine is used for the determination.
In addition, the accuracy of holograms and diffraction gratings replicated by contact exposure can be confirmed to be reduced compared to the original, but since replicas are usually distributed only as replicas, they are genuine for non-experts. There is a problem that it is difficult to determine whether the product is a product.

  It is known that a substrate provided with fine irregularities suppresses reflection of incident light. For example, some types of anti-reflection films have a fine distribution of the refractive index of the film by embossing fine irregularities on the surface of the film base material, or by adding a filler to the film-forming resin itself. Unevenness is formed.

  In recent years, it has been disclosed that the unevenness can be made finer and the period of the protrusions can be made equal to or less than the wavelength of light to prevent light reflection and control incident light (see, for example, Patent Document 2). In this technique, the period of the convex portion is set to be equal to or less than the wavelength of light, particularly about 50 to 250 nm, so that reflection of light is suppressed and applied to the light control sheet (hereinafter referred to as the wavelength of such light). The concavo-convex structure having the following convexity period is referred to as a fine relief). According to the present invention, the reflection loss of incident light can be prevented because of low reflection, but the visual effect due to diffracted light is not particularly taken into consideration.

  Further, it is disclosed that a reflective body is provided on a fine relief to control a diffracted light and to make a display body capable of observing the diffracted light. (For example, see Patent Document 3)

  However, a display body with a reflective layer on such a fine relief is difficult to counterfeit because it requires a more accurate manufacturing technology than conventional diffractive structures. Diffracted light is not generated unless it is observed from an angle close to the horizontal direction of the body, and in general observation methods, it looks only from gray to black, and there is a problem that it is plain and poor in design.

JP-T-2002-505774 JP 2007-48688 A JP 2008-275740 A

  In view of the above problems, the present invention aims to solve the above problems. That is, a first object of the present invention is to provide a display body that has a higher visual effect and is difficult to counterfeit. A second object of the present invention is to provide a display body that can easily determine the authenticity by grasping the characteristics by both human vision and a reading machine. A third object of the present invention is to provide a display body having a high eye-catching effect due to a novel visual effect that cannot be expressed by a conventional display body. A fourth problem is to provide a display body with improved image visibility by diffracted light and high design.

In the present invention, in order to achieve the above object, the display according to claim 1 is:
A fine structure forming layer, wherein the fine structure forming layer is provided with a fine relief portion having a fine relief structure and a diffraction grating portion having a diffraction grating adjacent to each other, and the fine relief portion and / or the diffraction grating portion A reflective layer is laminated in at least a part of the region.

  When the fine relief portion and the diffraction grating portion are provided adjacent to each other and the reflection layer is laminated, the fine relief portion becomes a low reflection region, and the diffraction grating portion becomes a high reflection region. Thereby, the contrast of the image by a diffracted light becomes high, and a very clear diffracted light image can be observed.

The display according to claim 2 is:
The fine relief portion mainly emits first-order diffracted light.

  The fine relief portion is composed of a plurality of fine grooves, and has a metallic surface with no metallic luster in the normal direction of the fine relief portion and an angle range in which the first-order diffracted light emitted from the diffraction grating portion can be observed. It looks black or gray with low brightness and saturation. However, the display body is characterized in that the diffracted light of the fine relief can be observed more clearly within a certain angle range.

The display body according to claim 3 is:
The fine relief portion has a visible light reflectance of 20% or less, and the diffraction grating portion has a visible light reflectance of 50% or more.

The display body according to claim 4 is:
The reflective layer is provided on the entire surface of the fine relief portion and the diffraction grating portion.

The display body according to claim 5 is:
The fine relief portion is not provided with the reflective layer, and the reflective layer is provided in at least a partial region of the diffraction grating portion.

The display body according to claim 6 is:
The reflective layer is provided in a partial region of the fine relief portion, and the reflective layer is provided in a partial region of the diffraction grating portion.

The display according to claim 7 is:
The region of the reflective layer is formed in a character shape or a pattern shape.

The anti-counterfeit medium according to claim 8 is:
The display body according to any one of claims 1 to 7 is pasted or laminated on a base material.

The forgery prevention medium according to claim 9 is:
At least a part of the display body is inserted into a base material.

The transfer foil according to claim 10,
It is characterized in that at least a peeling protective layer and a support layer are laminated on the fine structure forming layer.

The transfer foil according to claim 11,
An adhesion auxiliary layer between each layer and a printing layer on which characters and images are printed are formed at least partially.

An anti-counterfeit medium according to claim 12,
It is affixed or laminated on a base material.

  By adopting the above configuration, the present invention has the following effects.

That is, the display body, transfer foil and anti-counterfeit medium of the present invention have a visual effect with a better contrast than conventional display bodies and can be a display body that is difficult to counterfeit. It is possible to obtain a display body that can easily grasp the characteristics and determine the authenticity. Furthermore, by obtaining a new visual effect that could not be expressed by conventional holograms and diffraction gratings, it is possible to obtain a display body having high design properties and a high eye-catching effect.
Moreover, it can utilize as a transfer foil using this display body, and a forgery prevention medium.

The top view which shows the observation surface of the 1st structure thru | or 3rd structure concerning this invention. Sectional drawing which shows the structure of the AA cross section of FIG. 1 in the 1st structure which concerns on this invention. Sectional drawing which shows the structure of the AA cross section of FIG. 1 in the 2nd structure which concerns on this invention. Sectional drawing which shows the structure of the AA cross section of FIG. 1 in the 3rd structure which concerns on this invention. The top view which shows the observation surface of the 4th structure thru | or 6th structure which concerns on this invention. Sectional drawing which shows the structure of the BB cross section of FIG. 1 in the 4th structure based on this invention. Sectional drawing which shows the structure of the BB cross section of FIG. 1 in the 5th structure based on this invention. Sectional drawing which shows the structure of the BB cross section of FIG. 1 in the 6th structure which concerns on this invention. The top view which shows the observation surface of the 7th structure thru | or 9th structure which concerns on this invention. Sectional drawing which shows the structure of CC cross section of FIG. 1 in the 7th structure concerning this invention. Sectional drawing which shows the structure of CC cross section of FIG. 1 in the 8th structure which concerns on this invention. Sectional drawing which shows the structure of CC cross section of FIG. 1 in the 9th structure which concerns on this invention. The top view which shows the observation surface of the 10th structure concerning this invention. Sectional drawing which shows the WW cross section of FIG. 13 in the 10th structure which concerns on this invention. The top view which shows the observation surface of the 11th structure concerning this invention. Sectional drawing which shows the XX cross section of FIG. 15 in the 11th structure based on this invention. The top view which shows the observation surface of the 12th structure concerning this invention. Sectional drawing which shows the YY cross section of FIG. 17 in the 12th structure concerning this invention. The top view which shows the observation surface of the structure of the comparative example 1. FIG. Sectional drawing which shows the ZZ cross section of FIG. 19 in the structure of the comparative example 1. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view showing the observation surfaces of the first to third configurations of the display body of the present invention, and FIGS. 2 to 4 show the configuration of the cross-sectional portion taken along the line AA in FIG. It is a figure.
2, 3, and 4 have different cross-sectional configurations, but the plan view on the observation surface side is the same as FIG. 1, and FIGS. 1 to 4 show the position in the horizontal axis direction. Shown to align.

Each display body shown in FIGS. 1 to 4 includes a fine relief portion 15 and a diffraction grating portion 16. The diffraction grating section 16 includes a diffracted image area 16a (star pattern in FIG. 1) composed of a solid color or a figure or pattern image such as a character shape or a tint block, and a diffracted image area 16b (in FIG. 1) that generates diffracted light different therefrom. A character pattern surrounded by a dotted line).
The fine relief portion 15 and the diffraction grating portion 16 are provided adjacent to each other so as not to overlap each other, and either of them may be on the inside or the outside.

FIG. 2 shows a cross-sectional structure as a first configuration of the display body and transfer foil of the present invention.
In the display 1, the fine structure forming layer 12, the reflective layer 13, and the adhesive layer 14 are laminated on the first base material 11 in this order. The fine structure forming layer 12 of the display body 1 includes a fine relief portion 15 and a diffraction grating portion 16, the fine relief portion 15 is formed with a fine relief structure, and the diffraction grating portion 16 is formed with a diffraction structure described later. .
Further, the fine relief portion 15 and the diffraction grating portion 16 are formed adjacent to each other without a gap. In this example, the reflective layer 13 is formed on the entire surface of the microstructure forming layer 12, and an adhesive layer 14 is further laminated on the entire surface of the reflective layer 13.

The fine relief structure has a concavo-convex structure having a convex period equal to or less than the wavelength of light, has a low visible light reflectance, and emits first-order diffracted light.
When the display body having this structure is observed from the normal direction, it looks black or gray with no gloss, and appears as if it is a black printed surface. Therefore, combined with the fine structure, the display body is difficult to forge.
Further, since the diffracted light in a wavelength range different from that of the conventional diffraction grating can be observed in the oblique observation, a characteristic visual effect can be obtained, and authentication can be easily judged by human visual observation or machine monitoring.

FIG. 3 shows a cross-sectional structure of a display body according to the second configuration of the present invention.
In the display body 2, the fine structure forming layer 12, the reflective layer 13, the adhesive layer 14, and the second base material 17 are laminated on the first base material 11 in this order. The fine structure forming layer 12 of the display body 2 includes a fine relief portion 15 and a diffraction grating portion 16. The fine relief portion 15 has a fine relief structure, and the diffraction grating portion 16 has a diffractive structure.
Further, the fine relief portion 15 and the diffraction grating portion 16 are formed adjacent to each other without a gap. In this configuration, the reflective layer 13 is formed on the entire surface of the microstructure forming layer 12, the adhesive layer 14 is further stacked on the entire surface of the reflective layer 13, and the second base material 17 is further stacked.

  That is, in the second configuration of the present invention, since the reflective layer 13 is provided on the entire surface, the fine relief portion 15 is observed as a dark portion close to black with no gloss when observed from the normal direction. In the observation from the oblique direction, first-order diffracted light close to a single color having a different wavelength range according to the observation angle is observed.

FIG. 4 shows a cross-sectional structure of a display body according to the third configuration of the present invention.
In the display body 3, the peeling protective layer 62, the fine structure forming layer 12, the reflective layer 13, and the adhesive layer 14 are laminated in this order on one main surface of the support 61. Further, the remaining layer configuration of the display body 3 excluding the support body 61 is a transfer layer 63. The transfer layer 63 is used as a transfer foil for transferring to a transfer substrate.
The peeling protection layer 62 is a layer for protecting the transfer layer from scratches caused by friction and adhesion of various chemicals when the transfer layer 63 is peeled from the support 61.

The fine structure forming layer 12 includes a diffraction grating portion 16 that generates diffracted light by incident light from the peeling protection layer 62 side, and a fine relief portion 15 that is visually recognized as gray or black while hardly reflecting incident light. The fine relief portion 15 and the diffraction grating portion 16 are formed adjacent to each other without a gap.
In this configuration, the reflective layer 13 is laminated on the entire surface of the diffraction grating portion 16 and the fine relief portion 15 of the fine structure forming layer 12.

FIG. 5 is a plan view showing the observation surfaces of the fourth to sixth configurations of the display body of the present invention, and FIGS. 6 to 8 each show the configuration of the cross-sectional portion taken along the line BB in FIG. FIG.
6, 7, and 8 have different cross-sectional configurations, but the plan view on the observation surface side is the same as that in FIG. 5, and FIGS. 5 to 8 align the horizontal axis coordinates. As shown.

The display bodies 4 to 6 shown in FIGS. 5 to 8 include the fine relief portion 15 and the diffraction grating portion 16. The diffraction grating section 16 includes at least two types of a first diffraction image area 16a composed of a solid color or a figure or pattern image such as a character shape or a tint block, and a second diffraction image area 16b that generates diffracted light different therefrom. A diffraction image area is provided.
Also here, the fine relief portion 15 and the diffraction grating portion 16 are provided adjacent to each other without a gap so as not to overlap each other, and either of them may be on the inner side or the outer side.

FIG. 6 shows a cross-sectional structure as a fourth configuration of the display body of the present invention.
The display body 4 includes a fine structure forming layer 12, a partial reflection layer 21, and an adhesive layer 14 on the first base material 11. Further, the fine structure forming layer 12 includes a fine relief portion 15 and a diffraction grating portion 16. The fine relief portion 15 and the diffraction grating portion 16 are formed adjacent to each other without a gap.
In the display 4, the partial reflection layer 21 is provided only in the region of the diffraction grating portion 16 of the fine structure forming layer 12, and the partial reflection layer 21 is not provided in the fine relief portion 15.

FIG. 7 shows a cross-sectional structure as a fifth configuration of the display body of the present invention.
In the display body 5, the fine structure forming layer 12, the partial reflection layer 21, the adhesive layer 14, and the second base material 17 are laminated on the first base material 11 in this order. The fine relief portion 15 and the diffraction grating portion 16 provided in the fine structure forming layer 12 are formed adjacent to each other without a gap.
In the display 5, the partial reflection layer 21 is provided only on the diffraction grating portion 16 of the fine structure forming layer 12, and the partial reflection layer 21 is not provided on the fine relief portion 15. The adhesive layer 14 is laminated on the entire lower layer of the fine structure forming layer 12 and the partial reflection layer 21, and the second base material 17 is laminated on the lower layer.

FIG. 8 shows a cross-sectional structure as a sixth configuration of the display body of the present invention.
In the display body 6, the peeling protective layer 62, the fine structure forming layer 12, the partial reflection layer 21, and the adhesive layer 14 are laminated in this order on one main surface of the support body 61.
The remaining layer configuration of the display body 6 excluding the support body 61 is a transfer layer 64. The transfer layer 64 is used as a transfer foil for transferring to a transfer substrate.

The fine relief portion 15 and the diffraction grating portion 16 provided in the fine structure forming layer 12 are formed adjacent to each other without a gap.
However, the partial reflection layer 21 is provided only on the diffraction grating portion 16 of the fine structure forming layer 12, and the partial reflection layer 21 is not provided on the fine relief portion 15. The adhesive layer 14 is laminated on the entire lower layer of the fine structure forming layer 12 and the partial reflection layer 21.
The peeling protection layer 62 is a layer for protecting the transfer layer from scratches caused by friction and adhesion of various chemicals when the transfer layer 64 is peeled from the support 61.

  FIG. 9 is a plan view showing the observation surface of the seventh to ninth configurations of the display body of the present invention, and FIGS. 10 to 12 show the configuration of the cross-sectional portion taken along the line CC in FIG. FIG.

The display bodies 7 to 9 shown in FIGS. 9 to 12 include a fine relief portion 15 and a diffraction grating portion 16. The diffraction grating section 16 includes at least two types of a first diffraction image area 16a formed of a solid color or a figure or pattern image such as a character shape or a background pattern, and a second diffraction image area 16b that generates diffracted light different from the first diffraction image area 16a. The diffraction image is provided.
In the diffraction grating portion 16, the portion without the reflective layer is a demetallized region 16c, and this demetallized region 16c looks transparent, so that the lower layer than the adhesive layer can be observed without observing the diffracted light.

As long as the fine relief portion 15 and the diffraction grating portion 16 are provided adjacent to each other without a gap so as not to overlap, the positional relationship between them may be either inside or outside. As shown in FIG. The star pattern has a diffraction grating portion 16 on the inner side and a fine relief portion 15 on the outer edge, and is surrounded by a circular demetallized region 16c.
The right pentagonal star pattern has a fine relief portion 15 on the inner side and a diffraction grating portion 16 on the outer edge, and is surrounded by an elliptical demetallized region 16c.

FIG. 10 shows a cross-sectional structure as a seventh configuration of the display body of the present invention.
The display body 7 is provided with a fine structure forming layer 12, a partial reflection layer 31, and an adhesive layer 14 on a first base material 11. The fine structure forming layer 12 of the display body 7 includes a fine relief portion 15 and a diffraction grating portion 16. The fine relief portion 15 has a fine relief structure, and the diffraction grating portion 16 has a diffractive structure. The fine relief region 15 and the diffraction grating region 16 are formed adjacent to each other without a gap.
In the display body 7, the partial reflection layer 31 is provided on a part of the fine relief part 15 and a part of the diffraction grating part 16. The adhesive layer 14 is formed on the entire lower surface of the display body 7 regardless of the presence or absence of the partial reflection layer 31.

FIG. 11 shows the cross-sectional structure as the eighth configuration of the display body of the present invention.
In the display 8, the fine structure forming layer 12, the partial reflection layer 31, the adhesive layer 14, and the second base material 17 are laminated on the first base material 11 in this order. The fine structure forming layer 12 includes a fine relief portion 15 and a diffraction grating portion 16. The fine relief portion 15 has a fine relief structure, and the diffraction grating portion 16 has a diffraction structure. The fine relief portion 15 and the diffraction grating portion 16 are formed adjacent to each other without a gap.
In the display body 8, the partial reflection layer 31 is provided on a part of the fine relief part 15 and a part of the diffraction grating part 16. Further, the adhesive layer 14 is formed on the entire surface of the lower layer of the display body 8 regardless of the presence or absence of the partial reflection layer, and the second base material 17 is further laminated on the lower layer.

FIG. 12 shows the cross-sectional structure as the ninth configuration of the display body of the present invention.
In the display body 9, the peeling protective layer 62, the fine structure forming layer 12, the partial reflection layer 31, and the adhesive layer 14 are laminated in this order on one main surface of the support body 61. The fine structure forming layer 12 includes a fine relief portion 15 and a diffraction grating portion 16. The fine relief portion 15 has a fine relief structure, and the diffraction grating portion 16 has a diffraction structure. The fine relief portion 15 and the diffraction grating portion 16 are formed adjacent to each other without a gap.
The remaining layer structure of the display body 9 excluding the support body 61 is a transfer layer 65. The transfer layer 65 is used as a transfer foil for transferring to a transfer substrate.

The fine relief portion 15 and the diffraction grating portion 16 provided in the fine structure forming layer 12 are formed adjacent to each other without a gap.
In the display body 9, the partial reflection layer 31 is provided on a part of the fine relief part 15 and a part of the diffraction grating part 16. The adhesive layer 14 is laminated on the entire lower layer of the fine structure forming layer 12 and the partial reflection layer 31.

  Hereinafter, examples of materials and manufacturing methods of each layer constituting the display body of the present invention will be described in detail. In addition, about the material of these each layer, a manufacturing method, etc., it is not limited to the following examples, It shall be able to select and implement suitably.

(First base material, second base material)
The first base material 11 is a base material for holding each layer from the fine relief structure forming layer 12 to the adhesive layer 14, and the second base material 17 is laminated on the adhesive layer 14 for use in threads, etc. The structure forming layer 12 to the adhesive layer 14 are sandwiched between the first base material 11.
Examples of the material of the first base material 11 and the second base material 17 include a thermoplastic or photocurable resin. By using a thermoplastic resin or a photocurable resin, a concave structure or a convex structure can be easily formed on one surface of the first base material by transfer using the original plate.
The first base material 11 and the second base material 17 may be different materials, but it is preferable to use the same material in consideration of processability.
Moreover, by using a light-transmitting material, it can be observed as a display element from the front and back through each base material. Moreover, the 1st base material 11 and the 2nd base material 17 may be the laminated body of multiple types of resin, respectively.

(Support)
A resin film can be used as the support 61. As the resin film, a polyethylene terephthalate resin film, a polyethylene naphthalate resin film, a polyimide resin film, a polyethylene resin film, a polypropylene resin film, a heat-resistant vinyl chloride film, or the like can be used. Among these resins, since the heat resistance is high and the thickness is stable, a polyethylene terephthalate resin film can be preferably used.
Moreover, the film which processed antistatic treatment, mat processing, embossing, printing of a character and a pattern, laser marking etc. can also be used for these resin films.

(Peeling protection layer)
As the peeling protection layer 62, a resin added with a lubricant can be used. As the resin, a thermoplastic resin, a thermosetting resin, a moisture curable resin, an ultraviolet curable resin, an electron beam curable resin, or the like can be used. For example, acrylic resin, polyester resin, and polyamideimide resin. As the lubricant, wax such as polyethylene powder or carnauba wax can be used, and it can be added up to 20 parts by weight. These are formed on the support 61 by a known coating method such as a gravure printing method or a micro gravure method.

(Fine relief structure)
The fine relief structure can be formed by, for example, a method of drawing a pattern with an electron beam on a photosensitive resin material in order to process and form fine uneven portions.
Or, a so-called hot embossing method, in which a master having fine irregularities corresponding to fine irregularities is pressed against a thermoplastic resin laminated on a film, for example, as in a method for producing a surface relief hologram Can be formed.
It is also possible to apply the UV curable resin to a transparent substrate such as a film, and apply the ultraviolet light from the substrate side to cure the UV curable resin while pressing the original, and then remove the original after removing the original. A first substrate having a relief structure can be obtained.

At this time, a diffraction structure described later can be formed together. An original plate with fine irregularities can be obtained, for example, by a method in which a resin in which a hologram pattern is recorded using a two-beam interference method, a resin in which a pattern is drawn by an electron beam is used as a matrix, or a metal is cut by a cutting tool. It is obtained by performing electroforming of the obtained master mold.
Here, the fine relief structures forming the fine relief portions 15 do not necessarily have the same size and shape as long as the regularity of the arrangement is maintained. Further, the cross-sectional shape is not particularly limited as long as it exhibits the above-described effect of reducing the reflectance with respect to visible light.

(Diffraction structure)
As the diffraction structure, a diffraction structure such as a relief type diffraction grating can be used.
The relief type diffraction grating has a diffraction grating recorded in the form of a fine uneven pattern on the surface thereof. The concavo-convex pattern is formed, for example, by using the two-beam interference method to irradiate the surface of the photosensitive resin with two coherent light beams to generate interference fringes on the surface of the photosensitive resin. It can be formed by recording on a photosensitive resin in the form.
The interference fringes formed by the two-beam interferometry are also diffraction gratings, and an arbitrary three-dimensional image can be recorded as a diffraction grating pattern by selecting the two light beams. It is also possible to record so that different images (hereinafter referred to as changing images) can be seen depending on the viewing angle.

  Regarding a method for recording an image pattern to be a diffractive structure used in the display body of the present invention, in addition to the two-beam interference method, conventionally known holograms such as an image hologram, a rainbow hologram, and an integral hologram It is possible to produce by this manufacturing method.

Further, the concavo-convex pattern of the relief type diffraction grating can form a diffraction structure by irradiating the surface of the electron beam curable resin with an electron beam and exposing it to a striped pattern to be a diffraction grating. In this case, since the interference fringes can be controlled for each line, any three-dimensional image or changing image can be recorded in the same manner as the hologram.
It is also possible to divide the image into dot-like pixel areas, record different diffraction gratings for each pixel area, and express the entire image with a set of these pixels. The pixel may be a circular dot or a star-shaped dot.

It is also possible to form the concavo-convex pattern by an induced surface relief forming method. That is, by irradiating an amorphous thin film of a polymer having azobenzene on the chain side with a relatively weak light of about several tens mW / cm ² having a certain wavelength in a range from blue to green, on a scale of several μm. The movement of the polymer molecules is caused, and as a result, a relief due to unevenness can be formed on the surface of the thin film.

  Then, by forming a metal film on the surface of the relief-type master plate having the uneven pattern formed in this way by electroplating, the uneven pattern of the relief-type master plate is duplicated and used as a press plate. A diffractive structure can be formed by thermocompression-bonding this press plate to the microstructure forming layer 12 on the first substrate 11 and transferring the concavo-convex pattern to the surface of the microstructure forming layer 12.

As the resin applied to the fine structure forming layer 12 having the fine relief structure and the diffraction structure by the relief type diffraction grating, a thermoplastic resin, a thermosetting resin, an ultraviolet ray, an electron beam curable resin, or the like can be used.
For example, acrylic resins include acrylic resins, epoxy resins, cellulose resins, vinyl resins, and the like. In addition, urethane resins, melamine resins, phenol resins, and the like obtained by adding polyisocyanate as a crosslinking agent to an acrylic polyol or polyester polyol having a reactive hydroxyl group and crosslinking can be used. Further, as the ultraviolet ray or electron beam curable resin, epoxy (meth) acryl, urethane (meth) acrylate, or the like can be used.

(Reflective layer)
The reflective layer 13 and the partial reflective layers 21 and 31 are provided in direct contact with the fine structure forming layer 12.
As the reflection layer 13 and the partial reflection layers 21 and 31, a metal thin film can be preferably used due to high reflection luminance. Examples of the metal used for the metal thin film include Al, Sn, Cr, Ni, Cu, Au, and brass.
And this metal thin film can be formed using a vacuum film-forming method. As the vacuum film forming method, a vacuum deposition method, a sputtering method, or the like can be applied, and the thickness of the thin film may be controlled to about 5 to 1000 nm.

  Moreover, as the reflective layer 13 and the partial reflective layers 21 and 31, a transparent thin film having a high refractive index can be used. The transparent thin film preferably has a refractive index that is 0.2 or more larger than the refractive index of the microstructure forming layer 12, and is a thin film made of a transparent material having a refractive index of 2.0 or more. However, since the transparent thin film hardly functions as a reflective layer in the fine relief portion 15 of the fine structure forming layer 12, it mainly functions as a reflective layer in the diffraction grating portion 16.

Examples of the material constituting the transparent thin film include Sb ₂ O ₃ (refractive index n = 3.0), Fe ₂ O ₃ (n = 2.7), TiO ₂ (n = 2.6), Cds ( n = 2.6), CeO ₂ (n = 2.3), ZnS (n = 2.3), PbCl ₂ (n = 2.3), CdO (n = 2.2), Sb ₂ O ₃ ( n = 2.0), WO ₃ (n = 2.0), SiO (n = 2.0), Si ₂ O ₃ (n = 2.5), In ₂ O ₃ (n = 2.0), PbO (n = 2.6), Ta ₂ O ₃ (n = 2.4), ZnO (n = 2.1), ZrO ₂ (n = 2.0) and the like can be mentioned.
Then, the thin film can be formed using a vacuum film forming method. The thickness of the thin film may be about 5 to 1000 nm.

  Alternatively, a thin film may be formed by printing ink containing metal powder or transparent material powder. In this case, the powder preferably has a particle diameter of 500 nm or less. The thickness of the thin film is preferably 0.1 to 20 μm, and a known printing method such as a gravure printing method, a flexographic printing method, or a screen printing method can be used as a printing method.

As a method of processing the reflective layer into an arbitrary pattern to form the partially reflective layers 21 and 31, the following method is used.
That is, the first method for forming the reflective layer is a method using the printing method described above.
In the second method, a mask having an image pattern-shaped opening is overlapped on the microstructure forming layer 12 and the partial reflection layers 21 and 31 are vacuum-formed in each step, thereby forming an image pattern. It is a method to do.

  In the third method, a solvent-soluble resin layer is first provided in a negative pattern on the microstructure forming layer 12, and then the solvent-soluble resin layer is coated to form a uniform reflection layer 13 on the entire surface. Thereafter, the solvent-soluble resin layer is dissolved and removed with a solvent, and at the same time, the reflective layer 13 superimposed on the solvent-soluble resin layer is removed, whereby the reflective layer 13 is formed on the microstructure forming layer 12. This is a method that remains in the image pattern and becomes the partially reflective layers 21 and 31.

  In the fourth method, first, a resin layer that is easily peeled off from the microstructure forming layer 12 is provided on the microstructure forming layer 12 in a negative pattern, and then this resin layer is covered to uniformly reflect the entire surface. After the layer 13 is formed, it is transferred to the adhesive roll or adhesive paper in a negative pattern by pressing against the adhesive roll or adhesive paper. As a result, the reflective layer 13 remains in the image pattern and is partially reflected. This is a method for forming layers 21 and 31.

Next, the fifth method is to form the reflective layer 13 uniformly on the entire surface of the microstructure forming layer 12, and provide a chemical-resistant resin layer on the reflective layer 13 in an image pattern, so that it is alkaline or acidic. In this method, the reflective layer 13 exposed by applying an etching solution is dissolved and removed to form the partially reflective layers 21 and 31.
In this case, the chemical-resistant resin layer may be removed after the reflective layer 13 is processed into an image pattern, but it remains on the partially reflective layers 21 and 31 as it is to provide chemical resistance. It can also be used as a protective layer.

Next, the sixth method is to form a photosensitive resin layer on the reflection layer 13 formed uniformly on the entire surface of the microstructure forming layer 12, expose and develop it into an image pattern, and then perform alkaline or acidic etching. In this method, a liquid is applied to dissolve and remove the exposed reflective layer 13.
Also in this case, the remaining photosensitive resin layer can be left as it is, and can be used as a protective layer for imparting chemical resistance.

  The seventh method is a method in which the reflective layer 13 formed uniformly on the entire surface is removed by irradiating it with a laser beam, so that the remaining reflective layer 13 is left as an image pattern as the partial reflective layers 21 and 31. It is.

(Adhesive layer)
Any adhesive layer 14 may be used as long as it adheres to the substrate to be transferred by heat and pressure, and a known heat-sensitive adhesive material can be used.

(Other layers)
Although not shown in the drawings, as other layers, an anchor layer is provided to further strengthen the adhesion between the layers, the diffraction grating portion 16 is colored, and a printing layer is used to print characters and pictures. Can be added. As these inks, well-known adhesion improvers, adhesives, and printing inks can be used.

(Anti-counterfeiting media and anti-counterfeiting paper)
The display according to the present invention is affixed to a medium composed of paper, plastic, or the like printed by a known printing method such as offset printing, screen printing, or intaglio printing, or is embedded in a paper layer. By embedding in a plastic substrate, it can be used as an anti-counterfeit medium or anti-counterfeit paper.

  Next, the anti-counterfeit medium of the present invention will be described in detail with reference to the following examples.

FIG. 13 is a plan view showing a tenth configuration according to the present invention, and FIG. 14 is a cross-sectional view showing a configuration of a cross section taken along line WW in FIG.
First, the anti-counterfeit medium 100 in which the display body 1 having the above-described first configuration is pasted on paper will be described. A transparent polyethylene terephthalate (commonly known as PET) film having a thickness of 25 μm was used as the substrate 11 of the display body 1. In addition, a plastic substrate 18 was used as the substrate of the forgery prevention medium 100.

  On one side of the base material 11, the ink comprising the fine structure forming layer ink composition shown below (ink composition 1) was applied and dried to form a fine structure forming layer 12 having a thickness of 1.5 μm, and then a roll. The press plate was hot-pressed by the embossing method, and the concave and convex portions for generating the fine relief structure and the diffraction grating were simultaneously formed on the surface.

  Next, an aluminum vapor deposition film was uniformly formed with a film thickness of 50 nm on the entire surface of the microstructure forming layer 12 by a vacuum vapor deposition method to form a reflective layer 13.

  On the reflective layer 13, an ink made of the adhesive layer ink composition shown below (ink composition 1) is applied and dried to form a hot melt type adhesive layer 14 having a thickness of 3 μm. A display body 1 having the first configuration was prepared.

  Next, the display body 1 is processed into a desired size in advance, and is superimposed on a plastic substrate 18 on which characters and designs are printed, and a hot plate of a hot press machine maintained at a temperature of 120 ° C. is displayed. The first anti-counterfeit medium 100 was manufactured as a tenth configuration according to the present invention by applying heat and pressure from the first base material 11 side.

(Ink composition 1)
"Microstructure forming layer ink composition"
UV curable acrylic resin 20.0 parts by weight Reactive silicone 1.0 part by weight Methyl ethyl ketone 50.0 parts by weight Ethyl acetate 30.0 parts by weight

"Adhesive layer ink composition"
Vinyl chloride vinyl acetate copolymer resin 15.0 parts by weight Acrylic resin (Tg. 20 ° C.) 10.0 parts by weight Silica 1.0 part by weight Methyl ethyl ketone 44.0 parts by weight Toluene 30.0 parts by weight

Next, as Example 2, an anti-counterfeit medium produced by transferring a transfer foil using the eleventh configuration according to the present invention to a paper substrate will be described below.
15 is a plan view showing an eleventh configuration according to the present invention, and FIG. 16 is a cross-sectional view showing a configuration of a cross section taken along line XX in FIG.
In the eleventh configuration, after the ninth configuration shown in FIG. 12 is first provided, the support 61 is peeled off after being transferred to the transfer substrate.

  First, it demonstrates using FIG. First, a transparent polyethylene terephthalate (commonly known as PET) film having a thickness of 25 μm was used as the support 61.

  On one surface of the support 61, an ink composed of the peeling protective layer ink composition shown below (ink composition 2) was applied and dried to form a peeling protective layer 62 having a thickness of 2 μm.

  Next, after coating and drying the ink comprising the fine structure forming layer ink composition shown below (ink composition 2) to form a fine structure forming layer 12 having a film thickness of 1.5 μm, a press plate is formed by a roll embossing method. The surface of the substrate was pressed to form unevenness on the surface for generating a fine relief structure and a diffraction structure.

  Next, an aluminum vapor deposition film is uniformly formed at a film thickness of 50 nm on the entire surface of the microstructure forming layer 12 by a vacuum vapor deposition method, and a mask plate having a mask pattern formed on quartz glass is disposed on the aluminum vapor deposition film. Scanning was performed by irradiating a laser beam having a wavelength of 1064 nm with an output of 3 w, and a partial reflection layer 58 was formed on a part of the fine relief part 15 and a part of the diffraction grating part 16.

  Next, an ink composed of the adhesive layer ink composition shown below (ink composition 2) was applied and dried to form an adhesive layer 14 having a thickness of 3 μm, and a display body 9 as a microstructure transfer foil was produced.

  Next, description will be made with reference to FIGS. 15 and 16. Here, the paper base material 70 was used as the base material. The display body 9 produced above is stacked on a paper base material 70 on which desired printing such as letters and patterns has been performed in advance, and a paper is transferred using a transfer machine that instantaneously presses a circular brass plate heated to a temperature of 120 ° C. Transferred to the substrate 70. Subsequently, the support 61 was peeled and removed, and the forgery prevention medium 200 was produced.

(Ink composition 2)
"Peeling protective layer ink composition"
Polyamideimide resin (Tg. 250 ° C.) 19.0 parts by weight Polyethylene powder 1.0 part by weight Dimethylacetamide 45.0 parts by weight Toluene 35.0 parts by weight

"Microstructure forming layer ink composition"
UV curable acrylic resin 19.5 parts by weight Reactive silicone 0.5 part by weight Methyl ethyl ketone 50.0 parts by weight Ethyl acetate 30.0 parts by weight

"Adhesive layer ink composition"
Vinyl chloride vinyl acetate copolymer resin 15.0 parts by weight Acrylic resin (Tg. 20 ° C.) 10.0 parts by weight Silica 1.0 part by weight Methyl ethyl ketone 44.0 parts by weight Toluene 30.0 parts by weight

  Next, as Example 3, an anti-counterfeit medium 300 produced with reference to FIGS. 11, 17 and 18 will be described. FIG. 11 shows the display body 8 of the eighth configuration of the present invention as described above, and FIGS. 17 and 18 show the twelfth configuration of the present invention.

The counterfeit prevention medium 300 produced in the present example first produced the display body 8 having the eighth configuration, and made it transparent into the paper base material 19 to form a window opening thread having the window opening portion 41. It is a configuration. Here, the paper base material 19 is used as the base material of the forgery prevention medium.
A transparent polyethylene terephthalate (commonly known as PET) film having a thickness of 12 μm was used for the first substrate 11 and the second substrate 17 of the display body 8.

  First, an ink composed of the fine structure forming layer ink composition shown below (ink composition 3) is applied to one surface of the first substrate 11 and dried to form a fine structure forming layer 12 having a film thickness of 1.5 μm. After that, the press plate was hot-pressed by a roll embossing method to simultaneously form unevenness on the surface for generating a fine relief structure and a diffraction grating.

  Next, an aluminum vapor deposition film is uniformly formed with a film thickness of 50 nm on the entire surface of the microstructure forming layer 12 by vacuum vapor deposition, and a mask plate having a mask pattern formed on quartz glass is disposed on the aluminum vapor deposition film. Then, scanning was performed by irradiating a laser beam having a wavelength of 1064 nm with an output of 3w, demetallized processing was performed to remove a part of the aluminum deposited film, and the partial reflection layer 31 was formed.

  Subsequently, an ink composed of the adhesive layer ink composition shown below (ink composition 3) is applied and dried to form an adhesive layer 14 having a thickness of 3 μm, and the second substrate 17 is bonded by a dry laminating method. It processed and produced the display body 8 by the 8th structure of this invention.

Next, after beating the softwood pulp in water, using a hand-rolling device, the display body 8 is soaked into the paper layer so as to be exposed from the window opening 41 designed in an arbitrary shape, and dehydrated and dried. An anti-counterfeit medium 300 (120 g / m ² ) according to the twelfth configuration was produced, and characters, patterns, etc. were printed on the anti-counterfeit medium 300 by an intaglio printing method offset printing method.

(Ink composition 3)
"Microstructure forming layer ink composition"
UV curable acrylic resin 20.0 parts by weight Reactive silicone 1.0 part by weight Methyl ethyl ketone 50.0 parts by weight Ethyl acetate 30.0 parts by weight

"Adhesive layer ink composition"
Urethane resin 25.0 parts by weight Methyl ethyl ketone 45.0 parts by weight Ethyl acetate 30.0 parts by weight

(Comparative Example 1)
Next, as Comparative Example 1, an example in which a forgery prevention medium 400 having a display body 401 having a conventional demetallized diffraction structure is manufactured will be described.
19 and 20 are diagrams showing the configuration of the forgery prevention medium 400. FIG.

  First, a transparent polyethylene terephthalate (commonly known as PET) film having a thickness of 25 μm is used as a support base 51, and an ink comprising a diffraction structure forming layer ink composition shown below (ink composition 4) on one side of the support base 51. Is applied and dried to form a layer having a thickness of 1 μm, and then a press plate for forming a diffraction grating is hot-pressed by a roll embossing method to form an emboss 53 for generating a diffraction grating on the surface, thereby forming a diffraction structure. Layer 52 was designated.

  Next, an aluminum vapor deposition film is uniformly formed with a film thickness of 50 nm on the entire surface of the diffraction structure forming layer 52 by a vacuum vapor deposition method, and then a mask plate having a mask pattern formed on quartz glass is formed on the aluminum vapor deposition film. The laser beam having a wavelength of 1064 nm is irradiated with an output of 3w, scanning is performed, demetallized processing is performed, a demetallized region 54 is formed as a region where the reflective layer is removed, and a region where the reflective layer remains A partially reflective layer region 55 was obtained.

  Finally, an ink composed of the adhesive layer ink composition shown below (ink composition 4) is applied and dried to form an adhesive layer 56 having a thickness of 3 μm. The anti-counterfeit medium 400 is attached to the plastic substrate 57 using a transfer machine that instantaneously presses a brass plate heated to a temperature of 120 ° C. on a white plastic substrate 57 on which a desired pattern such as a pattern has been printed. Produced.

(Ink composition 4)
"Diffraction structure forming layer ink composition"
Acrylic polyol resin 20.0 parts by weight Methyl ethyl ketone 50.0 parts by weight Toluene 30.0 parts by weight

"Adhesive layer ink composition"
Vinyl chloride vinyl acetate copolymer resin 15.0 parts by weight Acrylic resin (Tg. 20 ° C.) 10.0 parts by weight Silica 1.0 part by weight Methyl ethyl ketone 44.0 parts by weight Toluene 30.0 parts by weight

  The results of observing the anti-counterfeit media prepared in Examples 1 to 3 and Comparative Example 1 will be described.

  First, the anti-counterfeit medium 100 having the configuration shown in FIGS. 13 and 14 manufactured in Example 1 was observed. When the display body 1 having an elliptical shape is viewed from the front, a diffractive structure is formed as a diffraction grating portion 16 with a star-shaped pattern or letters “XX department store”, and the diffracted light can be observed.

  On the other hand, except for the diffraction grating portion 16, a fine relief structure was formed as the fine relief portion 15, and was observed from gray to black. At this time, the visible light reflectance of each of the fine relief portion 15 and the diffraction grating portion 16 was 8% in the fine relief portion 15 and 65% in the diffraction grating portion 16, so that the periphery of the diffracted light image by the diffraction structure Since the visible light reflectance was low, the contrast of the diffracted light image was high, and it was clearly and clearly visible than the diffracted light image of the anti-counterfeit medium produced as a comparative example.

  Next, when the transfer layer 201 on the anti-counterfeit medium 200 shown in FIG. 15 and FIG. 16 produced in Example 2 was observed, the outer edge, which is a square shape with rounded corners, was formed on the diffraction grating portion 16 without a reflective layer. When the pattern is viewed from the front direction, the first diffracted image region 16a based on the pentagonal star pattern and the second diffracted image region 16b based on the character pattern of “10000” and “XX department store” are surrounded. However, it was possible to observe the diffracted light as the diffraction grating portion 16 having the partial reflection layer 58.

  On the other hand, since the fine relief structure was formed as the fine relief portion 15 except for the diffraction grating portion 16, it was observed from gray to black. When the visible light reflectance of each of the fine relief portion 15 and the diffraction grating portion 16 at this time was measured, the visible light reflectance of the fine relief portion 15 was 8%, and the visible light reflectance of the diffraction grating portion 16 was 65%. there were.

  From this, the visible light reflectance of the fine relief portion 15 around the diffracted light image due to the diffractive structure is low, so that the contrast of the diffracted light image is high, and the anti-counterfeit medium 400 having the conventional diffractive structure transfer portion which is a comparative example. It was possible to observe the diffracted light pattern more clearly and clearly.

  Next, when the transfer layer 8 on the anti-counterfeit paper 7 is observed from a substantially horizontal direction, the diffracted light of the diffraction images 161 and 162 is hardly observed, and the fine relief region 15 without the partial reflection layer 22 is gray. However, the diffracted light is generated in the hexagonal star pattern portion in the central portion, which is the fine relief region 15 having the partial reflection layer 22, and the counterfeit prevention has the conventional diffractive structure transfer portion 10 as a comparative example. Green diffracted light could be observed on the transfer layer 8 on the anti-counterfeit paper 7 at an observation angle where the optical effect of the paper 9 is hardly obtained.

  Further, the forgery prevention paper 300 having the structure shown in FIGS. 17 and 18 manufactured in Example 3 has the display body 8 inserted in the paper layer of the paper base material 19, and is surrounded by a dotted line in FIG. The window opening portion 41 has a window opening structure on both sides.

  In this window opening portion 41, the display body 8 can be visually recognized on the front and back of the anti-counterfeit paper 300, and when observed from the surface, there is a fine relief portion 15 made of a hexagonal star pattern at the center, A second diffraction image region 16b composed of characters “10000” and characters “XX department store” is formed in the fine relief portion 15 from gray to black, and “10000” characters and “XX”. The second diffraction image region 16b on which the characters “department store” were displayed could be clearly and clearly observed.

Further, around the hexagonal star-shaped fine relief portion 15, a diffracted image consisting of a plain or graphic pattern is demetalized to form a demetalized region 16 c without a reflective layer, and the fine relief portion is formed outside thereof. 15 is formed, and a second diffraction image region 16b composed of a plurality of small pentagonal star patterns is arranged there.
Thus, since the demetallized region 16c is arranged so as to border the hexagonal star pattern composed of the inner fine relief portion 15, the pentagonal star pattern is formed in the fine relief portion 15 which is gray to black. The diffracted light in the second diffraction image region 16b could be observed clearly and clearly.

  When the visible light reflectance of the fine relief portion 15 and the diffraction grating portion 16 of the display body 8 was measured, it was 18% for the fine relief portion 15 and 62% for the diffraction grating portion 16, and there was sufficient contrast. The diffracted light image of the display body 8 was more clearly and clearly visible than the diffracted light image of the display body 401 having the diffractive structure of the anti-counterfeit medium 400 produced in Comparative Example 1.

On the other hand, in Comparative Example 1, in the anti-counterfeit medium 400 having the conventional diffraction structure transfer portion 401, the visible light reflectance of the first diffraction image region 16a was 68%.
The visible light reflectance of the demetallized area 16c varies depending on the printing color, printing density, and pattern of the base because the demetalized area is transparent, but was 76% when the base card substrate 57 was white. . At this time, the difference in visible light reflectance between the first diffraction grating region 16a and the demetallized region 16c is only 8%, and the contrast is considerably small, so that the visibility is inferior to that of the above embodiment.

  Further, when dark color printing such as solid printing in black or gray or solid printing in dark blue or dark green is performed on the background of the demetallized region 16c, the visible light reflectance may be 20% or less. Although it is possible, the visible light transmittance is 20% or more even in a multi-color mixture state, and the contrast with the demetallized region 16c is also low. Therefore, visibility is inferior compared with the said Examples 1-3.

As described above, the display body of the present invention is formed by forming a fine relief structure region having a visible light reflectance of 20% or less adjacent to or around the diffraction grating region having a visible light reflectance of 50% or more. It has been found that the contrast of the diffracted light is further improved and the visibility of the diffracted light image is remarkably improved as compared with a display body composed of a conventional diffraction grating region and a region having no relief.
In addition, the forgery prevention medium and the forgery prevention paper produced using the display body of the present invention were able to obtain the same effect.

  By using the present invention, it has an unprecedented visual effect and is extremely difficult to counterfeit because it is necessary to form a fine structure. It can be used in combination with printed matter such as cards, postcards, books, etc. in addition to uses that emphasize security such as securities.

1, 2, 3, 4, 5, 6, 7, 8, 9: Display 11: First base material 12: Fine structure forming layer 13: Reflective layer 14: Adhesive layer 15: Fine relief part 16: Diffraction grating part 16a: first diffraction image region 16b: second diffraction image region 16c: demetalized region 17: second substrate 18: plastic substrate 19: paper substrate (window-open thread paper substrate)
21: Partial reflection layer (diffraction grating part 16)
31: Partial reflection layer (part of fine relief part and part of diffraction grating part)
41: Window opening portion 42: Transparent portion 51: Support base material 52: Diffraction structure forming layer 53: Emboss 54: Demetalized portion 55: Partial reflection layer 56: Adhesive layer 57: Plastic base material 58: Partial reflection layer 61: Support 62: Release protective layer 65: Transfer layer 70: Paper base material 100, 200, 300, 400: Anti-counterfeit medium 201: Transfer layer 401: Display

Claims (12)

In a display body having a microstructure forming layer,
The fine structure forming layer is provided with a fine relief portion having a fine relief structure and a diffraction grating portion having a diffraction grating adjacent to each other,
A display body, wherein a reflective layer is laminated on at least a part of the fine relief part and / or the diffraction grating part. The fine relief part mainly emits first-order diffracted light,
The display body according to claim 1. The visible light reflectance of the fine relief portion is 20% or less, and the visible light reflectance of the diffraction grating portion is 50% or more,
The display body according to claim 1 or 2.   4. The display body according to claim 1, wherein the reflective layer is provided on the entire surface of the fine relief portion and the diffraction grating portion. The fine relief portion is not provided with the reflective layer, and the reflective layer is provided in at least a partial region of the diffraction grating portion,
The display body according to any one of claims 1 to 3. The reflective layer is provided in a partial region of the fine relief portion, and the reflective layer is provided in a partial region of the diffraction grating portion,
The display body according to any one of claims 1 to 3. The region of the reflective layer is formed in a character shape or a pattern shape,
The display body according to any one of claims 1 to 6. The display body according to any one of claims 1 to 7,
An anti-counterfeit medium characterized by being stuck or laminated on a base material. The display body according to any one of claims 1 to 7,
An anti-counterfeit medium, wherein at least a part of the display body is encased in a base material. The display body according to any one of claims 1 to 7,
A transfer foil, wherein the fine structure forming layer is formed by laminating at least a peeling protective layer and a support layer. In the transfer foil according to claim 10,
A transfer foil characterized in that an adhesion auxiliary layer between each layer and a printing layer provided with characters and images by printing are formed at least partially. The transfer foil according to claim 10 or 11,
An anti-counterfeit medium characterized by being stuck or laminated on a base material.