JP3136790B2 - Manufacturing method of image display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display body provided with an image pattern formed by sublimation transfer means based on image data and a hologram image. And a hologram image.

[0002]

2. Description of the Related Art As a method of forming an image pattern by sublimation transfer means based on image data, for example, a method shown in FIG. 6 is known.

That is, in this method, heat sublimation transfer layers (Y), (M), and (C) each containing a sublimation dye such as yellow, magenta, and cyan are sequentially arranged on a belt-shaped sheet at predetermined dimensions. The formed transfer ribbon a is used, and the transfer ribbon a and the base material b such as a card are inserted between the platen roller c and the thermal head d. In this method, a group (not shown) is appropriately heated to form an image pattern on the base material b based on the data. In this case, the transfer ribbon a is always transported in the B direction, while the base material b is pulled back in the A ′ direction each time the transfer of one color is completed and transported again in the A direction to transfer the second color and the third color. Since the transfer is performed sequentially, a color image pattern e such as a face photograph can be formed on the base material b as shown in FIG. In addition, a method has been developed in which an image pattern is once formed on a transfer sheet for image transfer by the above-described sublimation transfer means, and then an image is formed on a base material such as a card by thermal transfer using the transfer sheet for image transfer. (JP-A-63-8)
No. 1093).

By applying these methods, a high-quality image display as shown in FIG. 7 can be obtained. This image display is applied to ID cards such as credit cards and members' cards. In this case, the image display body is not subjected to any processing to prevent tampering, so that, for example, it is difficult to recognize a tampered card even if an image pattern such as a face photograph is replaced and tampered. was there.

For this reason, recently, a sheet called a transparent hologram (Japanese Patent Application Laid-Open No.
The above falsification is prevented by applying a configuration in which a hologram image is recognized together with an image pattern.

[0006]

However, even if such a method is adopted, the image display body and the transparent hologram sheet are formed of different members, and the transparent hologram sheet is peeled off to remove a face photograph. It is also possible to replace the image pattern such as that described above and reapply the same transparent hologram sheet again for reproduction, so that there is still a problem that it is difficult to reliably prevent the falsification.

A method of preventing the tampering by aligning the image pattern of the image display body with the hologram image of the transparent hologram sheet can be considered. However, as described above, the image display body and the transparent hologram are used. Since these members are composed of members separate from the sheet, there is a limit in the alignment of these members, and it has been practically difficult to solve the above problems.

The present invention has been made in view of such a problem, and an object thereof is to perform high-accuracy position matching between the image pattern and the hologram image, thereby accommodating the falsification. And a method of manufacturing an image display body capable of preventing alteration and alteration.

[0009]

In other words, the invention according to claim 1 comprises a hologram forming layer provided with a concavo-convex pattern constituting a relief hologram, and a refractive index of the hologram forming layer provided along the concavo-convex surface. A transparent thin film layer having a large size and an image forming layer provided adjacent to the transparent thin film layer and having an image pattern are provided on a substrate, and an image pattern is recognized through the hologram forming layer and the transparent thin film layer together with the hologram image. Assuming a method of manufacturing an image display body, a transfer film is composed of a support film, a film for a hologram forming layer and a transparent thin film layer sequentially laminated on one side of the support film, and a roll shape having the above-mentioned uneven pattern on the outer peripheral surface. The transfer foil is inserted between the hologram stamper and the elastic roller so that the roll-shaped hologram stamper and the transparent thin film layer are in contact with each other. A hologram forming step of forming a concavo-convex pattern on the hologram-forming layer coating surface via a film layer, and a coating for forming an image-forming layer coating by a transfer means on a transparent thin film layer of a transfer foil having the concavo-convex pattern formed thereon A forming step, an image forming step of forming an image pattern on the transfer film surface of the transfer foil by the sublimation transfer means based on the image data, and a step of coating the transfer film on which the image pattern is formed with the image forming layer coating. A transfer step of transferring each coating excluding the support film by pressing against a substrate surface that is a transfer body;
The above-mentioned image display is manufactured by a continuous process.

In such technical means, the support film constituting a part of the transfer foil physically supports the coating for the hologram forming layer, the transparent thin film layer and the coating for the image forming layer until the transfer step, and transfers the film. It is peeled and removed from the substrate surface which is the object to be transferred at the time of completion, and for example, a heat-resistant film such as a polyethylene terephthalate film, a polyamide film, a polycarbonate film, and a polyethylene naphthalate film can be applied.

The film for the hologram-forming layer laminated on the support film has a concave-convex pattern formed on the surface of the film by the hologram-forming step, and the support film together with the film for the image-forming layer and the transparent thin film layer by the transfer step. The hologram-forming layer is transferred from the substrate to the surface of the base material which is the object to be transferred. Then, on the base material, reflected and diffracted lights of the concavo-convex pattern in the hologram forming layer interfere with each other to form an image, and a virtual image (hologram image) having a three-dimensional effect is observed at the image forming position.

Examples of the material applicable to the hologram-forming layer coating include a polyol-curable polyurethane resin composed of a polyol component and a prepolymer having an isocyanate group, or a resin obtained by mixing the polyol-curable polyurethane resin with a cellulose-based resin. Examples of the polyol include acrylic monomers having an OH group such as 2-hydroxyethyl acrylate, hydroxypropyl acrylate, 2-hydroxyethyl methacrylate, and hydroxypropyl methacrylate, and methyl acrylate, ethyl acrylate, isopropyl acrylate, n-butyl acrylate, Ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, copolymers with acrylic monomers having no OH group such as n-hexyl methacrylate can be used,
Preferably the glass transition point is 60 to 105 ° C and the OH value is 50 to
150. On the other hand, as the prepolymer having an isocyanate group, toluene diisocyanate, xylene diisocyanate, hexamethylene diisocyanate and the like can be used. Further, as the cellulose resin, nitrocellulose, acetylcellulose, cellulose acetate butyrate, cellulose acetate propionate, ethylcellulose, methylcellulose, and the like can be used. It becomes possible. The cellulose resin may be added and mixed in an amount of 0 to 50 parts by weight based on 100 parts by weight of the total amount of the polyol and the prepolymer having an isocyanate group.

The hologram-forming layer coating is prepared by dissolving or dispersing a mixture of a polyol and a prepolymer having an isocyanate group or a mixture obtained by adding a cellulosic resin to a solvent in a gravure coating method, a roll coating method, Dry film thickness of 0.5 by a method such as blade coating
It is formed by coating so as to have a thickness of up to 5.0 μm.

On the other hand, the transparent thin film layer laminated on the hologram-forming layer coating is made of a material having a higher refractive index than the material constituting the hologram-forming layer coating. To form a transparent hologram. That is, the light reflectance of the transparent thin film layer is maximized within the angle range in which the hologram image can be reproduced, and functions as a “reflection hologram”. This allows the image pattern located on the base material side to be seen through.

Materials applicable to the transparent thin film layer include, for example, Sb ₂ S ₃ , Fe ₂ O ₃ , TiO ₂ , Cd
S, CeO ₂ , PbCl ₂ , CdO, Sb ₂ O ₃ , Bi
₂ O ₃ , ZnS, WO ₃ , SiO, In ₂ O ₃ , Pb
O, Ta ₂ O ₃ , ZnO, CaO.SiO ₂ , ZrO,
Cd ₂ O ₃ , Al ₂ O _{3 and the} like can be mentioned, and the film thickness is 10 nm to 100
It can be formed to a thickness of 0 nm by a film forming means such as a vacuum evaporation method, a sputtering method, a reactive sputtering method, and an ion plating method.

The thus-formed transfer foil is inserted between the roll-shaped hologram stamper and the elastic roller to form an uneven pattern on the hologram-forming layer coating surface. That is, the transfer foil is inserted between the roll-shaped hologram stamper having the concavo-convex pattern and the elastic roller so that the roll-shaped hologram stamper and the transparent thin film layer are in contact with each other, and the hologram is formed through the transparent thin film layer. An uneven pattern is formed on the layer coating surface.

Next, a film for an image forming layer is laminated by a transfer means on the transparent thin film layer of the transfer foil on which the uneven pattern is formed. As such a transfer unit, a transfer sheet having a film for an image forming layer formed in a releasable manner on a sheet made of polyethylene terephthalate or the like subjected to a release treatment of silicon or the like was used and pressed against each other. A method in which the transfer sheet and the transfer foil are overlapped and inserted between the heating roller and the elastic roller, and the coating for the image forming layer is transferred and laminated on the transparent thin film layer of the transfer foil can be applied. And
The film for the image forming layer laminated on the transparent thin film layer is composed of a material that is dyed with a sublimable dye and can be adhered to a base material that is a transfer target, and the film for the hologram forming layer, It forms an image forming layer having an image pattern by being transferred onto a substrate together with the transparent thin film layer. As such a material, a synthetic resin material such as polyethylene, polypropylene, polyester, ABS, AS, polyvinyl chloride, polyester, polyamide, and polyurethane can be used, and the above-described gravure coating method, roll coating method,
It is formed by coating on a sheet of polyethylene terephthalate or the like, which has been subjected to a release treatment of silicon or the like by a coating means such as a blade coating method. Incidentally, an appropriate additive such as an ultraviolet absorber for improving the light resistance of the image pattern composed of the sublimable dye may be blended.

The sublimation transfer means based on the image data described in the prior art forms an image pattern such as a face photograph, character information, etc., on the image forming layer coating surface of the transfer foil thus transferred and laminated. In this case, a transfer ribbon according to the application can be applied.For example, a single-color transfer ribbon may be applied, or an overcoat layer for improving the durability of the image pattern may be provided in addition to the heat sublimation transfer layer. A transferred ribbon may be applied. As for the thermal head as the heating means, an end face type thermal head shown in FIG. 6 or a flat head type thermal head shown in the embodiment of the present invention can be applied. is there.

In this case, by adjusting the installation position of the hologram stamper and the like in the hologram formation step and the installation position of the thermal head and the like in the image formation step, the uneven pattern of the hologram formation layer coating and the image formation layer coating are adjusted. It becomes possible to perform position matching of the image pattern with high accuracy. That is, in the present invention, since a hologram forming layer coating surface and an image forming layer coating integrally laminated on the support film are successively formed with a concavo-convex pattern and an image pattern by a continuous process, There is an advantage that pattern alignment can be performed easily with high accuracy.

In the present invention, an endless roll-shaped stamper is used as the hologram stamper. In this case, since it is usually difficult to completely match the start point and the end point of the concavo-convex pattern, a connecting portion of the concavo-convex pattern is necessarily formed on a part of the roll-shaped hologram stamper. Then, if the connecting portion of the concavo-convex pattern is formed so as to overlap the image pattern, the quality of the hologram is poor, so that the quality of the image display body required is extremely deteriorated.

However, in the present invention, since the positional alignment between the image pattern of the coating for the image forming layer and the concavo-convex pattern of the coating for the hologram forming layer can be performed with high precision as described above, such a phenomenon is surely prevented. This has the advantage that it can be prevented.

Then, the coating for the image forming layer of the transfer foil in which the above-mentioned concave and convex pattern and the image pattern are integrally formed is pressed against the surface of the substrate which is the object to be transferred, and each coating except the above-mentioned support film is transferred. This makes it possible to easily and reliably obtain an image display body in which the hologram image and the image pattern are aligned with high accuracy.

Although the use of the image display according to the present invention is arbitrary, it is particularly preferable to apply the present invention to an object which is easily falsified or altered. For example, stock certificates, checks, stamps, stamps, bills, securities, certificates, passbooks,
Cash vouchers, credit cards, telephone cards, membership cards, ICs
ID cards such as cards and optical cards; passports, tickets and the like.

Any material can be applied to the base material as the object to be transferred according to the application. For example, when this image display is used for an ID card such as a member's card or a credit card, a polyester is used. Examples include sheets, rigid PVC sheets, rigid PVC / polycarbonate laminated sheets, and paperboards of various companies.

In the present invention, in the transfer step, the coating for the image forming layer of the transfer foil needs to be pressed against the surface of the substrate as the object to be transferred, and each coating except for the support film must be transferred to the substrate. Depending on the combination of the material constituting the support film and the material constituting the coating for the hologram forming layer, such transfer may not be sufficient. In such a case, it is desirable to interpose a release layer between the support film and the hologram-forming layer coating.

That is, the invention according to claim 2 is based on the technical background described above, and presupposes the method for manufacturing an image display body according to claim 1; It is characterized in that a release layer is interposed between them.

As a material constituting such a release layer, a thermoplastic acrylic resin; a chlorinated rubber resin; or a mixture of the chlorinated rubber resin and nitrocellulose, acetylcellulose, cellulose acetate butyrate, polystyrene or vinyl chloride vinyl chloride resin is used. Can be mentioned. In addition, it is also possible to apply a thermosetting resin such as a melamine resin, an alkyd resin, an epoxy resin, or a urea resin.

When such a method is adopted, the releasability of the hologram-forming layer coating from the support film is not always a requirement, so that the materials constituting the support film and the hologram-forming layer coating are not necessarily required. This has the advantage that the selection range can be expanded.

As described in the prior art, when an image pattern is formed on the above-mentioned image forming layer film by a sublimation transfer means using a color transfer ribbon, each time the transfer of each color is completed, this image formation is completed. It is necessary to pull back the layer coating (that is, the transfer foil) in the direction opposite to the transfer direction of the transfer ribbon and transfer it again. Therefore, when the roll-shaped hologram stamper and the elastic roller are always in contact with each other, this transfer foil is inserted between the roll-shaped hologram stamper and the elastic roller a plurality of times by the transfer foil transfer and pull-back transfer operations. In some cases, the accuracy of the concavo-convex pattern formed on the hologram-forming layer coating surface may be reduced.

According to a third aspect of the present invention, there is provided a method for improving such a phenomenon, based on the method of manufacturing an image display according to the first aspect, wherein the roll-shaped hologram stamper is brought into contact with and separated from an elastic roller. It is characterized by being provided as possible.

As in the case of the roll-shaped hologram stamper, the heating roller and the elastic roller are always in contact with each other in the transfer means in the coating forming step of transferring and laminating the coating for the image forming layer on the transparent thin film layer of the transfer foil. With such a configuration, there is a problem that a plurality of image forming layer coatings are transferred and laminated on the image forming layer coating surface by the transfer and pull back transfer operations of the transfer foil in the image forming step. Therefore, the transfer roller is also provided with the heating roller so as to be able to contact and separate from the elastic roller, and is separated from the elastic roller during the image forming process in which the transfer direction of the transfer foil is reversed in the normal and reverse directions. While the heating roller is in standby at the position, the elastic roller and the heating roller are brought into contact with each other at the time when the image forming step is completed, and the image forming layer coating is transferred and laminated on the transparent thin film layer of the transfer foil. It costs.

As the material constituting the film for the image forming layer, a material which is dyed with a sublimable dye and can be adhered to a substrate which is a transfer object is appropriately selected as described above. Depending on the substrate material used, the adhesive strength between the transferred image forming layer coating and the substrate may not be sufficient. In such a case, it is desirable to form an adhesive layer on the surface of the coating for the image forming layer and adhere to the surface of the base material via the adhesive layer. The invention according to claim 4 is made for such a reason.

That is, the invention according to claim 4 is based on claim 1.
Assuming that the method of manufacturing an image display according to the present invention, between the image forming step and the transfer step, a step of adding an adhesive layer by a transfer means on the image forming layer coating surface of the transfer foil is added. It is a feature.

As such a transfer means, similarly to the transfer means in the above-mentioned film forming step, a transfer film having an adhesive layer formed so as to be capable of being peeled off on a base film is appropriately used, and a heating film pressed against each other is used. A method in which the transfer film and the transfer foil are overlapped and inserted between the roller and the elastic roller, and the adhesive layer is transferred and laminated on the coating surface for the image forming layer can be applied. And, as a material applicable to such an adhesive layer, for example, a polyester resin-based adhesive, an acrylic resin-based adhesive, a vinyl chloride resin-based adhesive, a polyamide resin-based adhesive, a polyvinyl acetate resin-based adhesive, Well-known adhesives such as a rubber-based adhesive, an ethylene-vinyl acetate copolymer-based resin-based adhesive, and a vinyl chloride-vinyl acetate-based adhesive can be exemplified.

However, when such a method is adopted, if the heating roller and the elastic roller are always in contact with each other as in the transfer means in the film forming step, the transfer foil is transported and the pull-back transport operation is performed in the image forming step. There is an adverse effect that a plurality of adhesive layers are stacked one upon another on the coating surface for the image forming layer. Therefore, even when such a method is employed, the heating roller is provided so as to be able to contact and separate from the elastic roller, and during the image forming process in which the transfer direction of the transfer foil is reversed in the forward and reverse directions, A configuration in which the heating roller is made to stand by at a position away from the elastic roller, and at the time when the image forming step is completed, the elastic roller and the heating roller are brought into contact with each other to laminate the adhesive layer on the image forming layer coating surface of the transfer foil. It is necessary to

When such a method is employed, the adhesive strength between the substrate as the transfer object and the coating for the image forming layer can be increased, and the material constituting the coating for the image forming layer can be improved. Has the advantage that the selection range of applicable materials can be expanded since the adhesiveness to the substrate as the transfer object is not always required.

[0037]

According to the first aspect of the present invention, a transfer foil is composed of a support film, a film for a hologram forming layer and a transparent thin film layer sequentially laminated on one surface thereof, and the uneven pattern is formed on the outer peripheral surface. The transfer foil is inserted between the roll-shaped hologram stamper and the elastic roller so that the roll-shaped hologram stamper and the transparent thin film layer are in contact with each other, and an uneven pattern is formed on the coating surface for the hologram forming layer via the transparent thin film layer A hologram forming step of forming, a film forming step of forming a film for an image forming layer on a transparent thin film layer of the transfer foil on which the concavo-convex pattern is formed, and a film forming step of forming image data on the surface of the transfer foil. Forming an image pattern by a sublimation transfer means based on the image forming method, and applying a film for an image forming layer of a transfer foil on which the image pattern is formed to a substrate to be transferred. Transfer step for transferring the respective film except the crimped to the surface above the support film, by successive steps are manufacturing the image display body.

In other words, according to the first aspect of the present invention, a concavo-convex pattern and an image pattern are formed in a continuous process on the hologram forming layer coating surface and the image forming layer coating integrally laminated on the support film. Therefore, by adjusting the installation position of the hologram stamper or the like and the installation position of the thermal head or the like, it becomes possible to easily and easily perform the positional alignment of the above-mentioned uneven pattern and the image pattern.

On the other hand, according to the second aspect of the present invention, since the release layer is interposed between the support film and the hologram-forming layer coating on the transfer foil, each coating except the support film is coated in the transfer step. It is possible to reliably transfer the film to the base material which is the transfer body, and since the peelability of the hologram-forming layer coating from the support film is not always required, the support film and the hologram-forming layer coating are formed. The selection range of these materials can be expanded.

According to the third aspect of the present invention, since the roll-shaped hologram stamper is provided so as to be able to contact and separate from the elastic roller, an image in which the transfer direction of the transfer foil is reversed in the forward and reverse directions. During the forming process, the hologram stamper is made to stand by at a position away from the elastic roller, and at the time when the image forming process is completed, the elastic roller and the hologram stamper are brought into contact with each other so that The configuration of forming the uneven pattern can improve the accuracy of the uneven pattern.

According to the fourth aspect of the present invention, a step of laminating an adhesive layer by a transfer means on the image forming layer coating surface of the transfer foil is added between the image forming step and the transferring step. As a result, the adhesive strength between the substrate to be transferred and the image forming layer coating can be increased, and the material constituting the image forming layer coating can be bonded to the substrate to be transferred. Since the property is not always a requirement, the selection range of applicable materials can be expanded.

[0042]

Embodiments of the present invention will be described below in detail with reference to the drawings.

[Embodiment 1] In the manufacturing method according to this embodiment, as shown in FIG. 1, a hologram forming step of forming a concavo-convex pattern in the hologram forming section 20 for the transfer foil 1 supplied from the feed roller 10; A film forming step of transferring and laminating a film for an image forming layer on the transparent thin film layer of the transfer foil 1 on which the pattern is formed in the film forming section 30;
An image forming step of forming an image pattern in the step (a), and a coating for an image forming layer, a transparent thin film layer on the polyvinyl chloride card base material 5 from the transfer foil 1 in the transfer section 50, and
And a transfer step of integrally transferring the coating for the hologram forming layer.

First, as shown in FIG. 3 (A), the transfer foil 1 comprises a support film 11 made of a polyethylene terephthalate film having a thickness of 25 μm,
1. A release layer 12 having a thickness of 1.0 μm formed by coating the following composition for a release layer by gravure printing method and drying the same, and a composition for a hologram-forming layer described below on the release layer 12 Is also 1.0 μm thick by the gravure printing method
For hologram forming layer 13 formed by coating on the hologram forming layer 13 and then cultivating at 60 ° C. for 72 hours, and transparent 80 nm thick ZnS formed on the hologram forming layer coating 13 by vacuum evaporation. The main part is constituted by the thin film layer 14.

(Composition for release layer) Methyl methacrylate resin 30.0% by weight Polyethylene wax 5.0% by weight Methyl ethyl ketone 30.0% by weight Toluene 35.0% by weight (Composition for hologram forming layer) Acrylic polyol resin 25 0.0 wt% (TG: 75 ° C., OH value: 100) Nitrocellulose resin 5.0 wt% Xylene diisocyanate 5.0 wt% Toluene 35.0 wt% Methyl ethyl ketone 30.0 wt% And this transfer foil 1 Is supplied from the feed roller 10 to the hologram forming section 20 via the plurality of transport rollers 16, and the hologram forming section 20 forms the concavo-convex pattern 6 forming the hologram image on the hologram forming layer coating 13 of the transfer foil 1. (See FIG. 3B).

That is, the hologram forming apparatus includes an elastic roller 21 and a roll-shaped hologram stamper 22 which is provided so as to be able to contact and separate from the elastic roller 21 and has an uneven surface for forming a hologram formed on the outer peripheral surface thereof. During the image forming process in which the main part is configured and the transfer direction of the transfer foil 1 is reversed in the forward and reverse directions, a roll-shaped member is disposed at a position separated from the elastic roller 21 based on a control signal from the sublimation transfer part 40. While the hologram stamper 22 is kept on standby, the elastic roller 21 and the roll-shaped hologram stamper 22 are controlled so as to come into contact with each other when the image forming process is completed. 22 is in contact with the transfer foil 1 and the hologram-shaped Thereby forming a concavo-convex pattern 6 in the layer for the coating 13 surface.

Next, the transfer foil 1 on which the concavo-convex pattern 6 is formed is conveyed to the coating forming section 30, where the transfer sheet 31 is used to transfer the transparent thin film of the transfer foil 1 using a transfer sheet 31. An image forming layer coating 15 is transferred and laminated on the layer 14 (see FIG. 3C).

The main part of the transfer device is constituted by an elastic roller 32 and a heating roller 33 provided so as to be able to contact and separate from the elastic roller 32 as shown in FIG.
Further, similarly to the hologram forming apparatus, during the image forming process in which the transfer direction of the transfer foil 1 is reversed in the forward and reverse directions, the transfer foil 1 is moved away from the elastic roller 32 based on a control signal from the sublimation transfer unit 40. While the heating roller 33 is on standby, control is performed so that the elastic roller 32 and the heating roller 33 come into contact with each other when the image forming process is completed.

On the other hand, a transfer sheet 31 applied to this transfer device and supplying the image forming layer coating 15 to the transparent thin film layer 14 of the transfer foil 1 is a 16 μm thick polyethylene terephthalate which has been subjected to a silicon release treatment. A sheet made of a film and a 1.5 μm thick polyester resin (TG: 50 ° C.) formed releasably on the sheet.
m of the image forming layer and the transfer foil 1 on which the concavo-convex pattern 6 is formed and the transfer sheet 31 are separated between the elastic roller 32 and the heating roller 33 heated to 130 ° C. The image forming layer coating 15 is transferred and laminated on the transparent thin film layer 14 of the transfer foil 1.

Next, the transfer foil 1 on which the image forming layer coating 15 is transferred and laminated is conveyed to the sublimation transfer section 40, where the image pattern 7 is applied to the image forming layer coating 15 of the transfer foil 1. Is formed (see FIG. 3D).

Here, the above-mentioned sublimation transfer device is provided with a drum 41
The main part is constituted by a flat head type thermal head 42 whose one surface is pressed against the outer peripheral surface thereof. A multicolor transfer ribbon 43 described in the conventional method is formed between the thermal head 42 and the drum 41. And the above transfer foil 1
And a transfer and pull-back transfer operation was performed on the transfer foil 1 to form a character pattern and a color face photograph pattern on the surface of the image forming layer coating 15 based on the image data.

The position of the thermal head 42 in the sublimation transfer unit 40 and the position of the roll-shaped hologram stamper 22 in the hologram forming unit 20 are determined in consideration of the positional alignment between the concavo-convex pattern 6 and the image pattern 7. The concave and convex pattern 6 for forming the hologram (a hologram image of a character pattern) as shown in FIG.
And the image pattern 7 are aligned with high accuracy.

The transfer foil 1 on which the concavo-convex pattern 6 and the image pattern 7 forming the hologram image of the character pattern are formed is conveyed to the transfer section 50, which is the final step, and is heated to 135 ° C. in the transfer section 50. The transfer roll 51 heats and pressurizes the image forming layer coating 15 onto the upper surface of the polyvinyl chloride card base 5 (see FIG. 3E), and the support film 11 of the transfer foil 1 is peeled off. As shown in FIG. 5, a card base material 5, an image forming layer 70 having an image pattern 7 formed thereon, a transparent thin film layer 14,
An image display (ID card) 9 whose main part is constituted by the hologram forming layer 60 was obtained.

In the image display 9 thus manufactured, the hologram image of the character pattern can be confirmed by applying the light beam, and the image pattern 7 can be confirmed through the transparent thin film layer 14 by applying the light beam. .

In addition, since these image patterns and the hologram image are aligned with high accuracy, the hologram forming layer 60 and the image forming layer 70 are partially removed with a chemical or the like, and another face photograph or transparent image is formed. Even if falsification or falsification was attempted by attaching a mold hologram sheet, it was almost difficult to align the image pattern with the hologram image in the same way as the original position, so that falsification or falsification could be reliably prevented. .

[Embodiment 2] In this embodiment, as shown in FIG. 4, a sublimation transfer section 40 and a transfer section 5 for forming an image pattern are formed.
The method is substantially the same as the method for manufacturing an image display according to the first embodiment except that an adhesive layer transfer unit 80 is provided between the image display unit and the image display unit.

That is, this transfer device, like the transfer device in the film forming section 30, uses an elastic roller 81 and a heating roller 82 provided to be able to contact and separate from the elastic roller 81 as shown in FIG. During the image forming process in which the main part is configured and the transfer direction of the transfer foil 1 is reversed in the forward and reverse directions, the transfer foil 1 is heated to a position away from the elastic roller 81 based on a control signal from the sublimation transfer unit 40. While the roller 82 is kept on standby, the elastic roller 81 and the heating roller 82 are controlled to be in contact with each other when the image forming process is completed.

On the other hand, a transfer film 84 applied to this transfer device and supplying an adhesive layer to the image forming layer coating 15 of the transfer foil 1 is a 25 μm-thick polyethylene terephthalate which has been subjected to a silicone release treatment. A base film comprising a film, and a 1.5 μm thick adhesive layer formed by coating the following adhesive layer composition on the base film by a gravure printing method and drying at 110 ° C. The main part is configured.

(Composition for Adhesive Layer) 30.0% by weight of polyester resin 50.0% by weight of methyl ethyl ketone 50.0% by weight of toluene 50.0% by weight of the elastic roller 81 and the heating roller 82 heated to 140 ° C. The transfer foil 1 and the transfer film 84 are inserted between these rollers according to the timing of the transfer, and the adhesive layer is transferred onto the surface 15 of the transfer foil 1 for the image forming layer. The image was transferred to the surface of a card substrate 5 made of vinyl to produce an image display as shown in FIG.

In the manufacturing method according to this embodiment, the sublimation transfer section 40 and the transfer section 5 for forming an image pattern are formed.
0, an adhesive layer transfer section 80 is provided, and the adhesive layer 8 is interposed between the card base 5 and the image forming layer 70 of the manufactured image display body 9. As compared with the method according to Example 1, the adhesive strength between the card base material 5 and the image forming layer 70 can be increased, and the material constituting the image forming layer 70 does not necessarily have the adhesive property with the card base material 5. This has the advantage that the range of applicable materials can be expanded without becoming a requirement.

[0061]

According to the first aspect of the present invention, a concavo-convex pattern and an image pattern are formed in a continuous process on the hologram-forming layer coating and the image-forming layer coating surfaces integrally laminated on the support film. Therefore, by adjusting the installation position of the hologram stamper and the like and the installation position of the thermal head and the like, it becomes possible to easily and easily perform the positional alignment of the above-mentioned uneven pattern and the image pattern.

Accordingly, there is an effect that an image display body in which the image pattern and the hologram image are aligned with high accuracy and are difficult to be tampered or altered is easily provided.

On the other hand, according to the second aspect of the present invention, since the release layer is interposed between the support film and the hologram-forming layer coating in the transfer foil, each coating except the support film is coated in the transfer step. It is possible to reliably transfer the film to the base material which is the transfer body, and since the peelability of the hologram-forming layer coating from the support film is not always required, the support film and the hologram-forming layer coating are formed. This has the effect of expanding the selection range of these materials.

According to the third aspect of the present invention, since the roll-shaped hologram stamper is provided so as to be able to contact and separate from the elastic roller, an image in which the transfer direction of the transfer foil is reversed in the forward and reverse directions. During the forming process, the hologram stamper is made to stand by at a position away from the elastic roller, and at the time when the image forming process is completed, the elastic roller and the hologram stamper are brought into contact with each other so that The configuration of forming the uneven pattern can improve the accuracy of the uneven pattern.

Therefore, the image pattern and the hologram image can be aligned with high accuracy, and there is an effect that it is possible to easily provide an image display body in which each image quality is good.

According to the fourth aspect of the present invention, a step of laminating an adhesive layer by a transfer means on the image forming layer coating surface of the transfer foil is added between the image forming step and the transferring step. Therefore, the adhesive strength between the substrate to be transferred and the coating for the image forming layer can be increased, and the material constituting the coating for the image forming layer has an adhesive property with the substrate to be transferred. Does not always have to be a requirement, and has the effect of expanding the selection range of applicable materials.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing steps of a manufacturing method according to a first embodiment.

FIG. 2 is a configuration sectional view of an image display manufactured in Example 1.

3 (A) to 3 (E) are cross-sectional views of a transfer foil processed in each step of the manufacturing method according to the first embodiment.

FIG. 4 is an explanatory view illustrating steps of a manufacturing method according to a second embodiment.

FIG. 5 is a configuration sectional view of an image display manufactured in Example 2.

FIG. 6 is an explanatory diagram of a conventional method for forming an image pattern by a sublimation transfer unit based on image data.

FIG. 7 is a plan view of an image display manufactured by the conventional method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transfer foil 5 Card base material 6 Concavo-convex pattern 7 Image pattern 8 Adhesive layer 9 Image display 11 Support film 12 Release layer 13 Coating for hologram forming layer 14 Transparent thin film layer 15 Coating for image forming layer 20 Hologram forming part 21 Elastic roller 22 Roll-shaped hologram stamper 30 Coating part 40 Sublimation transfer part 42 Thermal head 50 Transfer part

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Akihiko Kobayashi 1-5-1, Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd. (56) References JP-A-62-42179 (JP, A) JP-A-3 -27983 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B42D 15/10 501-551

Claims (4)

(57) [Claims] 1. A hologram forming layer provided with an uneven pattern constituting a relief type hologram, a transparent thin film layer provided along the uneven surface and having a refractive index larger than that of the hologram forming layer, and a transparent thin film layer adjacent to the transparent thin film layer. An image forming layer having an image pattern provided on a base material, and a method of manufacturing an image display body in which an image pattern is recognized through the hologram forming layer and the transparent thin film layer together with a hologram image. The transfer foil is composed of the hologram forming layer coating and the transparent thin film layer sequentially laminated on one side, and the roll hologram stamper and the transparent thin film are arranged between the roll roller and the elastic roller having the above-mentioned uneven pattern on the outer peripheral surface. The transfer foil is inserted so that the layer comes into contact with the layer, and the concave surface is formed on the hologram-forming layer coating surface via the transparent thin film layer. A hologram forming step of forming a pattern; a film forming step of forming a film for an image forming layer by a transfer means on the transparent thin film layer of the transfer foil on which the concavo-convex pattern is formed; and a film surface of the transfer foil for the image forming layer. An image forming step of forming an image pattern by sublimation transfer means based on image data; and pressing the image forming layer coating film of the transfer foil on which the image pattern is formed to the base material surface as the transfer object, and pressing the support film. A method for manufacturing an image display, comprising manufacturing the image display by a continuous process of a transfer step of transferring each coating except for the coating. 2. The method according to claim 1, wherein a release layer is interposed between the support film and the hologram-forming layer coating in the transfer foil. 3. The method according to claim 1, wherein said roll-shaped hologram stamper is provided so as to be able to contact and separate from an elastic roller. 4. A method according to claim 1, further comprising a step of laminating an adhesive layer on the surface of the image forming layer of the transfer foil by a transfer means between the image forming step and the transferring step. A method for manufacturing an image display body.