JP2002328213A - Information display medium, method for manufacturing the same, and ovd transfer foil and ovd seal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information display medium which is provided with the ornamental effect of an OVD (optically variable device), a copy protection effect and a verification function without hiding information printed on the medium, to provide a method for manufacturing the information display medium and to provide an OVD transfer foil and an OVD seal. SOLUTION: The OVD is configured as an array of dots having a specific dot shape which itself has a certain meaning. The area of the dots of the OVD is in a range of 0.05 mm<2> to 4 mm<2> and the proportion of the occupancy area is in a range of 30 to 70%. A thermal head transfers and forms the OVD so that the OVD constitutes a dot pattern in which the form of the dots itself has a specific meaning by using the OVD transfer foil on which the OVD is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information display medium to be transferred to credit cards, securities, certificates, etc., and more particularly to an OVD information display medium formed by a hologram or a diffraction grating.

[0002]

2. Description of the Related Art In recent years, an OVD (optically variable) such as a hologram image or a diffraction grating image capable of expressing a stereoscopic image or a special decorative image using light interference.
leDevice) is being developed. OVD techniques such as holograms and diffraction gratings require advanced manufacturing techniques and are difficult to duplicate, so they have been used as effective counterfeit prevention means for cards such as credit cards, ID cards, and prepaid cards.

Recently, attention has been paid to the point that the reflection type OVD cannot be color-copied, and it is frequently used in paper tickets such as gift certificates, checks, bills, stock certificates, admission tickets, and various certificates. . Furthermore, due to its high decorativeness, packaging materials,
It is often used for books, pamphlets, POPs, etc.
In the present specification, a technique for optically expressing an image such as the hologram image or the diffraction grating image is collectively used as OVD.

[0004] Among these OVDs, the reflection type OVD having a metallic luster has a high light reflection efficiency, so that the decoration effect is high, and the OVD can be confirmed at a glance, and its authenticity can be easily judged. is there. Furthermore, when a copy is made with a color copier, that portion is reproduced in black, and it is impossible to reproduce OVD. Therefore, it has been actively used as a means for preventing color copying.

[0005] However, the conventional medium with a reflection type OVD has a drawback that the information on the medium is hidden because the medium is attached to a part or the entire surface of the medium, and the information cannot be described in that part. there were.

[0006]

SUMMARY OF THE INVENTION The present invention does not hide print information on a medium and has a decorative type effect and a copy prevention effect which are the effects of a reflective OVD, and furthermore, an information display provided with a verification function. Medium, manufacturing method thereof, and OVD
It is an object to provide a transfer foil and an OVD seal.

[0007]

Means for Solving the Problems The present invention provides at least:
In an information display medium having an OVD formed on a base material having print information, the OVD has a halftone dot shape, and the halftone dot shape itself has a specific shape having a certain meaning. This is an information display medium that is a feature.

The present invention also relates to the information display medium according to the present invention, wherein the OVD halftone dot area is 0.05.
mm ² to 4 mm ^2, and the occupied area ratio is information displaying medium which is a range of 30% to 70%.

The present invention also relates to a method for manufacturing an information display medium having at least an OVD formed on a substrate having print information, wherein the OVD transfer ribbon or the OVD transfer foil on which the OVD is formed is used for a thermal head. Characterized in that the OVD is transferred and formed on a base material having print information so that the OVD has a dot shape and the dot shape itself has a specific shape having a certain meaning. Is the way.

[0010] The present invention also provides a method of manufacturing an information displaying medium according to the invention, the halftone dot area is 0.05 mm ² to 4 mm ² in the form of the OVD, and the occupied area ratio of 30%
A method of manufacturing an information display medium, wherein the range is 70%.

Further, the present invention relates to a method of manufacturing an information display medium having at least an OVD formed on a substrate having print information, wherein the OVD has a halftone dot shape in advance and the halftone dot shape itself is present. This is a method for producing an information display medium, which is characterized in that an OVD transfer foil formed so as to have a specific shape having a meaning is transferred and formed on a substrate having print information by a transfer machine.

[0012] The present invention also provides a method of manufacturing an information displaying medium according to the invention, the halftone dot area is 0.05 mm ² to 4 mm ² in the form of the OVD, and the occupied area ratio of 30%
A method for manufacturing an information display medium, wherein the range is 70%.

Further, the present invention relates to an OVD transfer foil used for manufacturing an information display medium in which an OVD is formed on a substrate having print information, wherein the OVD of the OVD transfer foil has a halftone dot shape and An OVD transfer foil characterized in that the OVD transfer foil is formed to have a specific shape having a certain meaning.

Further, the present invention provides the OVD transfer foil according to the above invention, wherein the OVD halftone dot area is 0.05%.
mm ² to 4 mm ^2, an OVD transfer foil, characterized in that and occupying area ratio is in the range of 30% to 70%.

Further, according to the present invention, at least an OVD seal used for manufacturing an information display medium having an OVD formed on a base material having print information, wherein the OVD of the OVD seal has a halftone dot shape, and An OVD seal characterized by being an OVD formed to have a specific shape having a certain meaning.

The present invention also relates to the OVD seal according to the present invention, wherein the OVD has a dot-shaped area of 0.05.
The OVD seal is characterized in that the OVD seal has an area of ² mm to ⁴ mm ² and an occupied area ratio of 30% to 70%.

[0017]

Embodiments of the present invention will be described below in detail. FIG. 1 is a plan view showing one embodiment of the information display medium of the present invention. FIG. 2 is an enlarged view of the OVD section on the information display medium of the present invention shown in FIG. As shown in FIG. 1, the information display medium of the present invention has an OV
This is an information display medium in which "OK" is formed in a small halftone dot shape of OVD as a D portion (13).

When observing this information display medium, there are three pieces of information, namely, the print information (12) of "Taro Toppan", the information drawn by the OVD section (13) of "OK", and the information drawn on the OVD. Can be easily confirmed. Also, in FIG.
As shown in the enlarged OVD part (23), when the small halftone dot shape of OVD is enlarged, it has a specific shape of ★, and by observing this shape, it is possible to determine the authenticity. .

The dot shape of the OVD does not impair the printing information on the medium, it is necessary and the size of the information depicted in OVD (image) can be confirmed visually, 0.05 mm ² ~
A size of 4 mm ² is preferred. Because, 0.05m
If it is less than m ² , the information (image) drawn on the OVD is difficult to see, and if it is 4 mm ² or more, the print information on the medium is hidden, making it difficult to confirm the print information. For the same reason, the occupied area ratio is preferably in the range of 30% to 70%. Here, the occupied area ratio means a ratio of a halftone dot shape to a unit area.

The halftone dot shape of OVD is a specific shape having a certain meaning, such as O, Δ, ☆, or other graphic information, alphabets, other characters, symbols, numbers, etc. In the shape (pattern) representing the information. Not all need to have the same shape, but may have a meaning of several halftone dots, such as a name or a number.

FIGS. 3 and 4 are sectional views showing examples of the layer structure of the information display medium of the present invention. The layer configuration of the information display medium shown in FIG. 3 includes a base material (31), print information (32), O
This is a VD section (33). The OVD section (33) is obtained by forming a dot-shaped OVD on the print information (32).
The layer configuration of the information display medium shown in FIG.
1), print information (32), transfer layer of OVD transfer foil (3)
4). The transfer layer (34) of the OVD transfer foil is
This is formed on the print information (32) by using an OVD transfer foil on which a dot-shaped OVD is formed.

FIG. 5 is a cross-sectional view of an example of an OVD transfer foil or an OVD transfer ribbon used when manufacturing the information display medium having the layer configuration shown in FIG. As shown in FIG.
The VD transfer foil has a transfer layer (34 ') of an OVD transfer foil formed below a support (51), and the transfer layer (34') of the OVD transfer foil has a release layer (52) and an OVD transfer layer. An OVD layer (53) composed of a formation layer (53a), an OVD effect layer (53b), and an adhesive layer (54). The information display medium shown in FIG.
2) The OVD layer (53) is formed on the OVD portion (3
It can be manufactured by transfer forming as 3).

FIG. 6 is a cross-sectional view of an example of the OVD transfer foil used when manufacturing the information display medium having the layer configuration shown in FIG. As shown in FIG. 6, this OVD transfer foil has a transfer layer (34) of an OVD transfer foil formed under a support (51), and the transfer layer (34) of the OVD transfer foil is peeled off. Layer (52), OVD forming layer (53a) and halftone O
An OVD layer (53 ') composed of a VD effect layer (53b'),
It is composed of an adhesive layer (54). The information display medium shown in FIG. 4 can be manufactured by transferring and forming a transfer layer (34) of an OVD transfer foil on print information (32) by a transfer machine such as a hot stamp or a thermal head.

Hereinafter, the OVD transfer foil shown in FIGS. 5 and 6 will be described in detail. In both configurations, the support (5
1) A release layer (52) is formed below, and OVD layers (53, 53 ') are formed below the release layer (52). This configuration example shows an example of a relief type OVD.
The VD layers (53, 53 ') are composed of an OVD forming layer (53a) having a relief hologram or a diffraction grating pattern and an OVD effect layer (53b', 53) provided on the forming surface thereof.
b), under which an adhesive layer (54) is formed.

Next, the constituent materials together with the role of each layer will be described in detail. The support (51) is required to have heat resistance and strength so as not to be softened and deformed by the heat pressure in thermal transfer. Examples of the material include polyvinyl chloride, polyester, polycarbonate, polymethyl methacrylate, polystyrene, polyethylene, polyethylene terephthalate, polyethylene naphthalate, polypropylene, polyvinyl alcohol, and other synthetic resins, natural resins, paper, and synthetic paper. Can be used on the body. The thickness is preferably about 2 μm to 25 μm in consideration of operability and workability.

As the release layer (52), any of a thermoplastic resin, a thermosetting resin, an ultraviolet ray or an electron beam curable resin may be used as long as it can be easily peeled off from the support (51). A thermoplastic resin is preferable in consideration of flexibility and foil cutting property. Examples thereof include thermoplastic polyacrylate resin, chlorinated rubber resin, vinyl chloride-vinyl acetate copolymer resin, cellulose resin, chlorinated polypropylene resin, epoxy resin, polyester resin,
A nitrocellulose resin, a styrene acrylate resin, a polyether resin, a polycarbonate resin or the like can be used alone or in combination.

In consideration of the foil breaking property and the abrasion resistance, various waxes such as petroleum wax and vegetable wax, metal salts of higher fatty acids such as stearic acid, lubricants such as silicone oil, ethylene tetrafluoride resin powder, etc. Organic fillers such as polyethylene powder, silicone-based fine particles and acrylonitrile-based fine particles, and inorganic fillers such as silica fine particles can also be added. The release layer does not need to be provided when the support itself has releasability or when the support itself has been subjected to a release treatment. In order to impart frictional properties, it is also possible to provide a protective layer with a harder resin such as a UV curable resin after transfer.

The OVD forming layer (53a) is a layer for recording a hologram or a diffraction grating, and is a relief type hologram recorded on the surface as a relief of irregularities, or a volume type hologram in which an image is recorded three-dimensionally in the thickness direction. This is a layer having a known OVD image such as a hologram.

Among them, a relief type is preferable in consideration of mass productivity and cost. The relief type is a nickel-made press plate in which a relief type OVD (hologram or diffraction grating) consisting of a fine uneven pattern is produced by an optical imaging method and the pattern is duplicated by electroplating using the master as a master plate. Make it. Thereafter, a method of heating and pressing a press plate on the relief layer to copy the concavo-convex pattern is a method in which the copy can be obtained in large quantities and at low cost. When this relief type OVD is used, an OVD having a different refractive index from that of the relief surface is used in order to increase the diffraction efficiency.
It is preferable to provide an effect layer.

The OVD forming layer (53a) is required to have a performance of being moldable with a press plate, and the material thereof is any of a thermoplastic resin, a thermosetting resin, an ultraviolet ray or an electron beam curable resin. good. Examples include thermoplastic resins such as acrylic resins, epoxy resins, cellulosic resins, and vinyl resins, and urethanes obtained by adding a polyisocyanate as a crosslinking agent to an acrylic polyol or polyester polyol having a reactive hydroxyl group as a crosslinking agent. Resins, thermosetting resins such as melamine resins and phenolic resins, and ultraviolet or electron beam curable resins such as epoxy (meth) acrylic and urethane (meth) acrylates can be used alone or in combination. In addition, any material other than those described above can be used as long as it is a known material that can form an OVD image.

The OVD effect layer (53b) is a layer that reflects light on the relief surface and uses an inorganic material such as an oxide such as Si, Ti, or Zn, or a sulfide that reflects light and has a high refractive index. Although it is possible to do so, a metal material such as Al, Sn, Au, Ag, Cr, or Ni having higher light reflectivity is preferable. Further, these materials can be used alone or in the form of a composite laminate, and are formed by a known thin film forming technique such as a vacuum evaporation method and a sputtering method. The film thickness is 5 nm to 1000 nm due to the problem of reflectance.
Is preferred. If the reflection efficiency can be obtained, a known coating method or printing method such as gravure coating, roll coating, die coating, screen printing, or the like is applied to a material such as an organic, organic-inorganic composite, or a dispersion of an inorganic filler in an organic material. It is also possible to form with. Any material other than those described above can be appropriately used as long as it is a known material having light reflectivity.

The transfer foil shown in FIG. 6 has a configuration in which the OVD effect layer (53b ') is provided partially, that is, in a halftone dot shape. The following describes the OVD effect layer (53b ')
An example of a method of partially providing a is described below. First, there is a method in which a pattern is printed on the OVD forming layer (53a) with a water-soluble ink, the OVD effect layer is provided, and the water-soluble ink portion is washed. Alternatively, a method of performing masking printing after providing the OVD effect layer, and then partially dissolving and removing the OVD effect layer with an alkali or acidic chemical can be used. Any other known technique can be used as appropriate.

The adhesive layer (54) is required to have a performance of bonding the OVD effect layer and the substrate. The material is preferably thermoplastic resin acrylic resin, epoxy resin,
A simple substance or a copolymer of a polyester resin, a vinyl resin, or the like can be used alone or in combination, but is not limited thereto. In addition, in consideration of blocking prevention and foil breaking properties, various waxes such as petroleum wax and vegetable wax, metal salts of higher fatty acids such as stearic acid, lubricants such as silicone oil, ethylene tetrafluoride resin 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.

In the foregoing, the configuration and the manufacturing method of the transfer foil enabling the information display medium of the present invention to be easily manufactured have been described. These are examples, and in addition to the above, a printing layer using a known anti-counterfeiting ink that can provide an anchor layer between layers in order to improve resistance, or can verify ultraviolet light, infrared emitting ink, infrared absorbing ink, etc. It is also possible to suitably apply a back coat layer mixed with a slip agent on a support in order to enhance the anti-counterfeiting effect and improve transfer performance with a thermal head, depending on the purpose. In addition, the adhesive layer can be processed into a seal using a resin material having more tackiness. In that case, to prevent re-sticking, using a curable pressure-sensitive adhesive, providing a brittle layer so as to break when peeled off, or applying a known brittle seal processing such as cutting a support. Easy to think.

[0035]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail. <Example 1><Production of OVD transfer ribbon> In this example, a transparent polyethylene terephthalate film of 12 µm was used as a support. The release layer is provided in consideration of the releasability from the support and the foil-cutting property in order to transfer the OVD-forming layer to the substrate more effectively, and the composition having the following compounding ratio is prepared by gravure printing. Drying temperature 110 ° C by the method,
It was formed with a thickness of 0.8 μm.・ Acrylic resin 20 parts ・ Polyethylene powder 1 part ・ Toluene 30 parts ・ Methyl ethyl ketone 49 parts

The OVD forming layer in this example was formed at a drying temperature of 110 ° C. and a thickness of 0.5 μm by a gravure printing method using a composition having the following compounding ratio. -Vinyl chloride-vinyl acetate copolymer ... 15 parts-Urethane resin ... 5 parts-Methyl ethyl ketone ... 40 parts-Toluene ... 40 parts Further, in order to form an OVD image, the OVD stamper is heated to 165 ° C and pressed on the OVD forming layer. Molding was performed. After that, Al was provided as an OVD effect layer by 30 to 50 nm by a vacuum evaporation method.

The adhesive layer was formed by a gravure printing method using a composition having the following compounding ratio, at a drying temperature of 110.degree.
It was formed at 0 μm.・ Vinyl chloride-vinyl acetate copolymer: 10 parts ・ Polyester resin: 10 parts ・ Methyl ethyl ketone: 40 parts ・ Toluene: 40 parts

Further, a back coat layer was formed on the back surface of the support (the surface opposite to the surface on which the release layer was formed). The back coat layer is a layer for preventing sticking at the time of transfer with a thermal head and preventing the OVD transfer ribbon from sticking to the thermal head, and is formed by a gravure printing method using a composition having the following compounding ratio. Drying temperature 1
It was formed at 50 ° C. and a thickness of 1.0 μm.・ Acrylic polyol resin ... 20 parts ・ Isocyanate curing agent ... 5 parts ・ Silicone wax ... 1 part ・ Methyl ethyl ketone ... 44 parts ・ Toluene ... 30 parts

<Preparation of base material having information> The base material is 54 m
The pattern and character information were printed by a known thermal transfer card printer using an mx 85 mm white PVC card. Hereinafter, the base material to which the print information is added is referred to as a print card.

<Preparation of Information Medium of the Present Invention> An information display medium of the present invention was prepared using the OVD transfer ribbon and the printing card obtained as described above. The transfer of the OVD transfer ribbon was performed by a known thermal transfer printer. In this transfer, the OVD portion was formed as "OK" in a minute shape (pattern) of 0.5 mm square as shown in FIG.

In the information display medium manufactured by the above method, the OVD is formed without hiding the information on the print card. Since the color chaining was observed, an information display medium having a high design property was obtained.
In addition, this medium became a medium for which the authenticity can be determined by observing a minute halftone dot shape of OVD.

Example 2 <Preparation of OVD Transfer Foil> In this example, a 25 μm transparent polyethylene terephthalate film was used as a support. The release layer, the OVD forming layer, the OVD image, and the OVD effect layer were formed in the same manner as the above-described OVD transfer ribbon.

Thereafter, "OK" was printed using a minute 0.5 mm square shape (pattern) shown in FIG. The printing ink used had the following composition.・ Vinyl chloride-vinyl acetate copolymer resin ・ ・ ・ 20 parts ・ Methyl ethyl ketone ・ ・ ・ 40 parts ・ Toluene ・ ・ ・ 40 parts Next, it is washed with 0.1N sodium hydroxide solution.
After removing the unmasked portion, an adhesive layer was formed in the same manner as the above-described OVD transfer ribbon. In this way, an OVD transfer foil partially having an OVD portion was obtained.

<Preparation of Information Recording Medium of the Present Invention> An information display medium of the present invention was prepared using the OVD transfer foil obtained as described above and the above-described printing card. 12 metal plates
By heating to 0 ° C., the transfer layer of the OVD transfer foil was transferred onto the printing information of the substrate.

In the information display medium having an OVD image produced by the above method, the OVD is formed without hiding the information on the print card. An information display medium having a high design quality was obtained because chaining of dependent images and colors was observed. In addition, this medium became a medium for which the authenticity can be determined by observing a minute halftone dot shape of OVD.

<Embodiment 3><Production of anti-counterfeiting OVD seal> In this embodiment,
A 50 μm transparent polyethylene terephthalate film was used as a support. Release layer, OVD forming layer and O
The VD image and the OVD effect layer were formed in the same manner as in Example 2 described above.

Thereafter, etching was performed in the same manner as in Example 2 so that the "OK" effect layer using the * shape (pattern) remained. Next, release paper coated with an adhesive was attached to obtain an OVD seal partially having an OVD portion.

<Preparation of Information Display Medium of the Present Invention> The anti-counterfeit OVD seal obtained as described above was pressed against the above-mentioned print card to obtain an information display medium of the present invention. In the present embodiment, in order to provide a function of preventing the replacement,
The support was left unpeeled off the anti-counterfeit OVD seal. Therefore, if the seal is to be peeled off for replacement, only the support is peeled off, and the OVD display portion becomes a replacement prevention seal that remains without peeling.

The information display medium having an OVD image produced by the above method has an OVD formed without hiding the information on the print card. An information display medium having a high design quality was obtained because a dependent image and color change were observed. Further, this information display medium became a medium for which the authenticity can be determined by observing a minute halftone dot shape of OVD. Furthermore, the OVD seal produced in this example has a forgery prevention effect, and even if it is to be peeled off when replacing, only the support is peeled off, and the OVD remains without being peeled off. Became a display body

[0050]

As described above, according to the present invention, O.sub.
In the information display medium on which the VD is formed, the OVD is a halftone dot shape, and the halftone dot shape itself has a specific shape having a certain meaning. It is an information display medium that is not hidden and has a decoration effect and a copy prevention effect, which are the effects of the reflective OVD, and further has a verification function.

The present invention also relates to an OV having an OVD formed therein.
Using a D transfer ribbon or an OVD transfer foil, a thermal head is used on a substrate having printing information so that the OVD has a dot shape and the dot shape itself has a specific meaning. Therefore, the present invention provides a method of manufacturing an information display medium that does not hide print information, has a decoration effect and a copy prevention effect, which are the effects of a reflective OVD, and has a verification function.

The present invention also relates to a transfer machine using an OVD transfer foil formed in advance so that the OVD has a halftone dot shape and the halftone dot shape itself has a specific shape having a certain meaning. Since it is transferred and formed on a substrate having print information,
The present invention provides a method for manufacturing an information display medium that does not hide print information, has a decoration effect and a copy protection effect that are the effects of a reflective OVD, and has a verification function.

Further, according to the present invention, since the OVD of the OVD transfer foil is an OVD formed to have a halftone dot shape and a specific shape having a certain meaning, the printing information The OVD transfer foil is suitable for manufacturing an information display medium having a decoration effect and a copy protection effect, which are the effects of the reflection type OVD, without hiding the information, and further having a verification function.

Further, according to the present invention, the OVD of the OVD seal is an OVD formed so as to have a halftone dot shape and a specific shape having a certain meaning. An OVD seal suitable for manufacturing an information display medium having a decoration effect and a copy prevention effect, which are the effects of a reflective OVD without hiding, and further having a verification function.

[Brief description of the drawings]

FIG. 1 is a plan view showing one embodiment of an information display medium of the present invention.

FIG. 2 is an enlarged view of an OVD section on the information display medium of the present invention shown in FIG.

FIG. 3 is a sectional view showing an example of a layer configuration of the information display medium of the present invention.

FIG. 4 is a sectional view showing an example of a layer configuration of the information display medium of the present invention.

5 is a sectional view of an example of an OVD transfer foil used when manufacturing the information display medium shown in FIG.

6 is a sectional view of an example of an OVD transfer foil used when manufacturing the information display medium shown in FIG.

[Explanation of symbols]

 11, 31 ... base material 12, 32 ... printing information 13, 33 ... OVD part 23 ... enlarged OVD part 34, 34 '... transfer layer of OVD transfer foil 51 ... support body 52 ... release layer 53a ... OVD formation layer 53b ... OVD effect layer 53b '... halftone OVD effect layer 53, 53' ... OVD layer 54 ... adhesive layer

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) B44F 1/12 B44F 1/12 3E041 G03H 1/18 G03H 1/18 G07D 7/12 G07D 7/12 7 / 20 7/20 F-term (reference) 2C005 HA04 HA06 HB10 HB20 JB08 JB09 JB25 2H049 AA07 AA25 AA39 AA40 AA43 AA46 AA55 AA60 AA68 2H113 AA04 AA06 BA22 BB02 BB22 CA31 DA47 DA48 DA49 DA52 EA06 AFF3 003 FF0312 EA20 EB05 EB09 EC30 FA04 FA07 FB54 GB03 3E041 AA01 BA11 BB03

Claims (10)

[Claims] (1) At least an O on a substrate having printing information
An information display medium having a VD formed therein, wherein the OVD has a halftone dot shape, and the halftone dot shape itself has a specific shape having a certain meaning. 2. The OVD halftone dot area is 0.05 m.
^2. The information display medium according to claim 1, wherein m ^{2 to 4} mm ² and an occupied area ratio are in a range of 30% to 70%. 3. The method according to claim 1, wherein at least a substrate having printing information is
In a method for manufacturing an information display medium on which a VD is formed, an OV
Using a thermal head using the OVD transfer ribbon or the OVD transfer foil on which the D is formed, the printing information is formed such that the OVD has a dot shape and the dot shape itself has a specific shape having a certain meaning. A method for producing an information display medium, wherein the method is carried out by transferring and forming on a base material having: 4. The OVD halftone dot area is 0.05 m.
4. The method for manufacturing an information display medium according to claim 3, wherein m ^{2 to 4} mm ² and an occupied area ratio are in a range of 30% to 70%. 5. The method according to claim 1, wherein at least O
In a method of manufacturing an information display medium having a VD formed therein, an OVD is formed in advance so that the OVD has a halftone dot shape, and the halftone dot shape itself has a specific shape having a certain meaning.
A method for producing an information display medium, wherein a transfer machine uses a D transfer foil to transfer and form a print on a substrate having print information. 6. The OVD halftone dot area is 0.05 m.
6. The method for manufacturing an information display medium according to claim 5, wherein m ^{2 to 4} mm ² and an occupied area ratio are in a range of 30% to 70%. 7. At least a substrate having printing information
In an OVD transfer foil used for manufacturing an information display medium on which a VD is formed, the OVD of the OVD transfer foil is formed so as to have a halftone dot shape and a specific shape having a certain meaning. OV characterized by being OVD
D transfer foil. 8. An OVD halftone dot area of 0.05 m.
m ² to 4 mm ^2, and OVD transfer foil according to claim 7, wherein the occupying area ratio is equal to or in the range of 30% to 70%. 9. At least an O substrate on a substrate having printing information
In an OVD seal used for manufacturing an information display medium having a VD formed thereon, an OVD of the OVD seal is formed into a halftone dot shape, and an OVD formed such that the halftone dot shape itself has a specific shape having a certain meaning. OV characterized by having
D seal. 10. An OVD halftone dot area of 0.05.
mm ² to 4 mm ^2, and OVD seal according to claim 9, wherein the occupied area ratio is in the range of 30% to 70%.