JP3018598B2 - Hologram transfer foil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hologram transfer foil for forming a relief hologram on the surface of an object to be transferred by transfer, and more particularly, to an uneven pattern forming a hologram by heat treatment at the time of transfer or heat treatment after transfer. And a hologram transfer foil capable of partially forming a region having no hologram image on the surface of the transfer-receiving body by partially disappearing.

[0002]

2. Description of the Related Art Hitherto, holograms have been used in the fields of book and magazine covers, illustrations, gift products, novelty products, displays and advertisements by making use of the unexpected effect of decorativeness and three-dimensionality. For this reason, it has been adopted as means for preventing counterfeiting of securities, credit cards, ID cards, and the like.

[0003] These holograms are formed by forming an uneven pattern of interference fringes on the surface thereof. When white light is irradiated on the surface, the diffraction lights reflected by the uneven surface interfere with each other to form an image. A virtual image having a three-dimensional effect is observed at the image forming position, and is called a relief hologram because it uses an uneven pattern. Also, the reflected diffraction light has a different diffraction angle depending on the wavelength, so that it forms a continuous spectrum obtained by dispersing natural light and looks like a rainbow pattern, so that it is sometimes called a rainbow hologram. Generally, the hologram is formed by providing a light-reflective thin film of metal or the like on the uneven surface to increase the intensity of reflected diffraction light to brighten the virtual image.

[0004] By the way, the above-mentioned hologram is formed on the cover of a magazine or a credit card by a transfer method using a hologram transfer foil.

That is, this hologram transfer foil is shown in FIG.
As shown in the figure, a resin layer a1 having a concave-convex pattern constituting a relief type hologram formed on the surface thereof, a light-reflective metal thin film a2 formed on the entire hologram-constituting surface along the concave-convex surface, and the light-reflective metal Adhesive layer provided on the thin film a2 surface
a3, a transfer layer a comprising a transfer layer a, and a support film b for supporting the transfer layer a in a releasable manner. The transfer layer a is transferred to a surface of an object to be transferred (not shown) via the adhesive layer a3. A relief hologram is formed on the surface (Japanese Patent Publication No. 1-54709, Japanese Patent Publication No. 1-54710, Japanese Patent Application Laid-Open No. 61-190369, and Japanese Patent Application Laid-Open No. 6-190369).
1-1190369).

[0006] The above-mentioned uneven pattern constituting the relief hologram is formed on the surface of the resin layer a1 by the following method. That is, a three-dimensional stereoscopic image is irradiated with laser light, and its reflected light or transmitted light (object light)
The light (reference light) emitted from the light source to the photosensitive material for hologram photography without passing through a three-dimensional stereoscopic image is caused to interfere on the photosensitive material for hologram photography, so that the interference fringes have a height of 0.1 mm. After recording as a concave and convex pattern of up to several μm and repeating the inversion of the concave and convex pattern many times to obtain a hologram stamper made of metal plate, this hologram stamper is pressed against the surface of the resin layer a1 to form a concave and convex pattern on the surface Is what you do. Incidentally, as a material constituting the resin layer a1, the deformation of the uneven pattern on the surface of the resin layer a1 is prevented from being affected by heat when the transfer layer a is transferred to the surface of the object to be transferred, and even after the transfer. In order to make it possible to observe a sufficiently clear virtual image, a two-component curable urethane resin that is a thermosetting resin is widely used.

[0007]

As described above, in the conventional method, the hologram stamper is pressed against the surface of the resin layer a1 to form an uneven pattern constituting the hologram on the surface thereof. There is a problem that it is difficult to form a region without a hologram image, for example, a region without a hologram in a character pattern.

There is also known a hologram transfer foil in which an image made of printing ink such as characters is provided between the support film b and the hologram forming surface, but light observed from the hologram is obtained by dispersing natural light. Since a continuous spectrum is formed to form a rainbow pattern, the reflected light by the printing ink is hindered by the diffraction light of the strong rainbow pattern, and there is a problem that an image formed by the printing ink is extremely difficult to read and difficult to read.

The present invention has been made in view of such a problem, and an object thereof is to eliminate a part of an uneven pattern constituting a hologram by a heat treatment at the time of transfer or a heat treatment after transfer. The object of the present invention is to provide a hologram transfer foil capable of partially forming a region having no hologram image on the surface of a transferred object, and also provide a hologram transfer foil having a printed image that can be clearly read and recognized by the naked eye. It is.

[0010]

According to a first aspect of the present invention, there is provided a relief type hologram in which a concave and convex pattern constituting a relief type hologram is formed on the entire surface of the hologram forming surface along the concave and convex surface. A light-reflective metal thin film, a transfer layer comprising an adhesive layer provided on the light-reflective metal thin film surface, and a support film for releasably supporting the transfer layer. Assuming a hologram transfer foil that transfers a relief hologram to the surface of the transfer-receiving body through a layer and forms a relief hologram on the surface, the resin layer of the transfer layer has a high softening point resin layer and one layer on the high softening point resin layer. And a low softening point resin layer softened by a heat treatment during transfer or a heat treatment after transfer, and the relief pattern hologram has an uneven pattern formed on the surface of the low softening point resin layer and the low softening point resin layer. Soft The point softening point is formed on the surface of the high softening point resin layer in a portion where the point resin layer does not exist. On the other hand, the invention according to claim 2 is based on the invention according to claim 1, and the low softening point On the support film side of the point resin layer and on the surface of the high softening point resin layer corresponding to the low softening point resin layer, a printing ink layer having a smaller area than the corresponding low softening point resin layer is provided. Is what you do.

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

FIG. 1 is a cross-sectional view showing an example of a hologram transfer foil according to the first aspect of the present invention, and FIG. 2 is a cross-sectional view showing an object to be transferred after using the hologram transfer foil.

FIG. 3 is a sectional view showing an example of the hologram transfer foil according to the second aspect of the present invention.

First, as shown in FIG. 1, the main part of the hologram transfer foil according to the first aspect of the present invention is constituted by a support film 10 and a transfer layer 20 which is releasably laminated on the entire surface of one side thereof. Things.

The support film 10 physically supports the transfer layer 20 until the transfer is completed, and is peeled off from the surface of the transfer object 30 when the transfer is completed as shown in FIG. A polyethylene terephthalate film having a thickness of 10 to 100 μm can be suitably used.

On the other hand, the transfer layer 20 is peeled off from the support film 10 when the transfer is completed, and remains on the surface of the transfer object 30. Therefore, the transfer layer 20 is heated during the transfer,
It is laminated on the support film 10 so that it can be easily separated from the support film 10 by the action of pressure, stress and the like. When the transfer is completed, the transfer layer 20
Support film 1 of the transfer layer 20 in order to easily peel off
It is desirable to have the release layer 21 on the surface that comes into contact with the zero. As such a release layer 21, 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 can be used. The release layer 21 is melted by heat at the time of heat transfer by interposing
And the transfer layer 20 can be easily separated. Further, as the release layer 21, a thermosetting resin such as a melamine resin, an alkyd resin, an epoxy resin, or a urea resin can be used.

The transfer layer 20 has a high softening point resin layer 22 and a low softening point resin which is provided on a part of the high softening point resin layer 22 and which is softened by heat treatment during transfer or heat treatment after transfer. And a resin layer composed of the layer 23. The surface of the low softening point resin layer 23 and the surface of the high softening point resin layer 22 where the low softening point resin layer 23 does not exist constitute a relief hologram. As described above, this relief hologram is composed of an uneven pattern of interference fringes having a depth of 0.1 to several μm, and the reflected diffraction lights on the uneven surface interfere with each other to form an image, and a three-dimensional image is formed at the image forming position. A virtual image with a feeling is observed.

Further, the transfer layer 20 has a low softening point resin layer 2.
A light-reflective metal thin film 24 is formed on the entire surface of the hologram-forming surface composed of the three surfaces and the surface of the high softening point resin layer 22 where the low softening point resin layer 23 does not exist.

In the hologram transfer foil, the low softening point resin layer 23 is softened and deformed by the heat and pressure during transfer or the heat and pressure applied after transfer, so that the unevenness on the surface disappears and the light is reduced. A number of small and irregular cracks are formed in the reflective metal thin film 24. For this reason, the incident light which reproduces the hologram and makes it possible to observe the virtual image is irregularly irregularly reflected at the cracked portion of the light-reflective metal thin film 24, and thus the irregularly reflected light does not form an image at the virtual image position. As is well known, it becomes white light and does not give glare. On the other hand, under the heat and pressure conditions under which the low softening point resin layer 23 is softened and deformed, the high softening point resin layer 22 does not soften or deform and retains the concavo-convex pattern forming the hologram as it is. As a result, the light reflected from the light-reflective metal thin film 24 on the surface of the high softening point resin layer 22 at the portion where the low softening point resin layer 23 does not exist is regularly reflected diffraction light according to the uneven pattern of the interference fringes forming the hologram. And the reflected diffraction light forms an image at the virtual image position.

Here, the softening points of the high softening point resin layer 22 and the low softening point resin layer 23 are relative, and heat and pressure conditions for softening and deforming the resin constituting the low softening point resin layer 23 are described. It is necessary that the resin constituting the high softening point resin layer 22 does not soften or deform. As a resin constituting such a high softening point resin layer 22 and a low softening point resin layer 23, a polyol curable polyurethane resin composed of a polyol component and a prepolymer having an isocyanate group or a resin obtained by mixing a cellulose resin with the polyol curable polyurethane resin is used. The softening point can be controlled by the type of the prepolymer having a polyol and an isocyanate group, the degree of polymerization of the polyol-curable polyurethane resin, the mixing ratio of the cellulose resin, and the like. 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, and 2-ethylhexyl. Acrylate, methyl methacrylate, ethyl methacrylate, isopropyl methacrylate, n-
Butyl methacrylate, isobutyl methacrylate, n
A copolymer with an acrylic monomer having no OH group such as hexyl methacrylate can be used, and preferably has a glass transition point of 60 to 105 ° C and an OH value of 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. Nitrocellulose as the cellulose resin,
Acetylcellulose, cellulose acetate butyrate, cellulose acetate propionate, ethylcellulose, methylcellulose, and the like can be used. By adding and mixing the cellulose-based resin, coating suitability and transferability of the high softening point resin layer 22 and the low softening point resin layer 23 can be used. Improvement can be achieved. The cellulosic resin has a total amount of 100% of the polyol and the prepolymer having an isocyanate group.
What is necessary is just to add and mix 0-50 weight part with respect to weight part.

The high softening point resin layer 22 is formed by dissolving or dispersing a mixture of a polyol and a prepolymer having an isocyanate group or a mixture obtained by further adding a cellulose resin in a solvent, by a gravure coating method, A coating method, a blade coating method, or the like is applied to the entire surface of the release layer 21 so as to have a dry film thickness of 0.5 to 5.0 μm. On the other hand, the low softening point resin layer 23
Is a mixture of a polyol and a prepolymer having an isocyanate group, or a mixture obtained by further adding a cellulosic resin to the solvent is dissolved or dispersed in a solvent and a dry film thickness of 0.5 to 5 μm is obtained by a method such as gravure printing. It is formed by printing in a predetermined pattern such as letters, numbers, marks, and patterns on a predetermined portion on the high softening point resin layer 22.

In order to form a concavo-convex pattern constituting a relief hologram on the surface of the low softening point resin layer 23 and the surface of the high softening point resin 22 where the low softening point resin layer 23 does not exist, the above high softening point is required. Resin layer 22 and low softening point resin layer 2
3 is formed by coating or printing, and a hologram stamper prepared in advance is superimposed on the surface, and the surface of the low softening point resin layer 23 and the surface of the low softening point resin layer 23 are inverted by applying heat and pressure to reverse the unevenness of the hologram stamper surface. Low softening point resin layer 2
What is necessary is just to transfer to the surface of the high softening point resin layer 22 where 3 does not exist, and to cure both the high softening point resin layer 22 and the low softening point resin layer 23.

The light-reflective metal thin film layer 24 is formed of the low softening point resin layer 23 on which a relief hologram is formed.
Aluminum, gold, silver, tin, iron, copper, etc. are formed on the surface and the surface of the high softening point resin 22 where the low softening point resin layer 23 does not exist by a vacuum deposition method, a sputtering method, an ion plating method or the like. Metal or their alloy
It may be formed by depositing a film with a thickness of 0 to 100 nm.

Next, the transfer layer 20 has an adhesive layer 25 on the outermost surface of the transfer layer 20 which is activated by heating to generate an adhesive force in order to adhere the transfer layer 20 to the surface of the transfer object 30. The adhesive constituting the adhesive layer 25 may be any adhesive, but a heat-sensitive adhesive is preferable. As such a heat-sensitive adhesive, a polyester resin heat-sensitive adhesive, an acrylic resin-based heat-sensitive adhesive, a vinyl chloride resin-based heat-sensitive adhesive,
Well-known thermoplastic resin such as polyamide resin-based heat-sensitive adhesive, polyvinyl acetate resin-based heat-sensitive adhesive, rubber-based heat-sensitive adhesive, ethylene-vinyl acetate copolymer resin-based heat-sensitive adhesive, vinyl chloride vinyl chloride resin-based heat-sensitive adhesive A heat-sensitive adhesive can be used. These heat-sensitive adhesives are dissolved or dispersed in an appropriate solvent, and coated on the entire surface of the light-reflective metal thin film layer 24 by a method such as a gravure coating method, a roll coating method, or a blade coating method so as to have a dry thickness of 1 to 20 μm. The adhesive layer 25 can be formed by coating and drying.

The hologram transfer foil thus obtained is shown in FIG.
It has a cross section as shown in FIG. That is, the release layer 21 sequentially laminated on one surface of the support film 10.
, High softening point resin layer 22, low softening point resin layer 23 provided in a pattern, light-reflective metal thin film layer 24, and adhesive layer 2
5 is formed by laminating a transfer layer 20 made of a resin material having a low softening point.
The surface of the high softening point resin layer 22 at the portion where no light is present constitutes a relief hologram, while the light-reflective metal thin film layer 24
Are formed unevenly along the uneven surface constituting the relief hologram.

Then, the hologram transfer foil is superposed on the surface of the transfer object 30 such as a card or a sheet so that the surface on which the adhesive layer 25 is formed is in contact with the surface of the transfer object 30 as in the prior art. Is adhered to the surface of the transfer-receiving body 30 under the condition that the
The entire transfer layer 20 is removed by removing the
0. When the adhesive layer 25 is made of a heat-sensitive adhesive, heat is applied to activate the adhesive layer 25, and at the same time, pressure is applied from the support film 10 side to adhere to the surface of the transfer-receiving body 30. Can and
Due to the heat and pressure during this transfer, the low softening point resin layer 23 is formed.
Can be softened and deformed. Further, when the adhesive layer 25 is made of another adhesive, or when the heat and pressure at the time of transfer are not enough to soften and deform the low softening point resin layer 23 even if it is a heat-sensitive adhesive, After the transfer, the low softening point resin layer 23 can be softened and deformed by applying heat and pressure. In any case, under the conditions of heat and pressure at the time of transfer, the high softening point resin layer 22 needs to hold the concavo-convex pattern forming the hologram as it is without softening or deforming, and Even under the heat and pressure conditions under which the low softening point resin layer 23 is softened and deformed after the transfer, the high softening point resin layer 22 must not be softened or deformed, and the ruggedness constituting the hologram must be maintained as it is.

With the softening deformation of the low softening point resin layer 23, the surface irregularities disappear and the light reflecting metal thin film 2
A large number of small and irregular cracks are formed on the surface 4 to form a white irregular reflection area. On the other hand, since the high softening point resin layer 22 does not soften or deform, the surface of the high softening point resin layer 22 where the low softening point resin layer 23 does not exist retains the concavo-convex pattern constituting the hologram as it is, The light-reflective metal thin film 24 on the surface reproduces a three-dimensional three-dimensional image (virtual image) of a bright hologram. It is to be noted that, even if the hologram is partially formed, the hologram usually has all information of a three-dimensional stereoscopic image (virtual image). No information about the image (virtual image) is lost.

FIG. 3 is a cross-sectional view showing an example of the hologram transfer foil according to the third aspect of the present invention, which has a printing ink layer 26 between the release layer 21 and the high softening point resin layer 22. 1 is substantially the same as the hologram transfer foil of FIG. The formation site of the printing ink layer 26 is not limited to the site illustrated in FIG. 3, and may be provided, for example, between the low softening point resin layer 23 and the high softening point resin layer 22. The printing ink layer 26 is formed of the low softening point resin layer 23.
And a low softening point resin layer 23
It is preferable that the area is smaller, and desirably such that the low softening point resin layer 23 can be seen all around the image printed by the printing ink layer 26. The printing ink layer 26 can be formed by printing a colored opaque printing ink or a colored transparent printing ink by a printing method such as gravure printing.
A print image such as a trademark, a logo, a design, or the like as a pattern such as a mark or a pattern is formed.

Then, in the hologram transfer foil shown in FIG. 3, as described above, the low softening point resin layer 23 after the transfer is formed.
Are present in a white diffuse reflection area. Therefore, since the periphery of the printed image formed by the printing ink layer 26 generates only diffused white reflected light that does not cause glare and does not generate reflected diffraction light having a rainbow pattern, this printed image is a printed image that can be clearly read and recognized by the naked eye. Make up the result of the configuration.

[0030]

According to the first aspect of the present invention, the resin layer of the transfer layer is provided on the high softening point resin layer and a part of the high softening point resin layer, and the heat treatment at the time of transfer or the heat treatment after transfer is performed. The relief type hologram is composed of a low softening point resin layer, and the relief pattern hologram has an uneven pattern, and the low softening point resin layer surface and the high softening point resin layer surface at a portion where the low softening point resin layer does not exist. The resin layer having a low softening point is softened and deformed due to heat or heat and pressure after transfer or after transfer, and the uneven pattern on the surface disappears, and the light-reflective metal thin film is minute and irregular. Many cracks occur.

For this reason, the incident light which reproduces the hologram and makes it possible to observe a virtual image is irregularly irregularly reflected at the cracked portion of the light-reflective metal thin film, and the irregularly reflected light does not form an image at the virtual image position. As is well known, it becomes white light and does not give glare.

On the other hand, under the heat or heat and pressure conditions under which the low softening point resin layer softens and deforms, the high softening point resin layer does not soften or deform and retains the concavo-convex pattern constituting the hologram as it is. The light reflected from the light-reflective metal thin film on the surface of the high softening point resin layer where the softening point resin layer does not exist forms regular reflection diffraction light according to the uneven pattern of the interference fringes forming the hologram. Light forms an image at the virtual image position.

Therefore, while forming a clear three-dimensional three-dimensional image of the hologram on the object to be transferred, an area where the hologram image is not present on the object to be transferred due to the disappearance of a part of the concavo-convex pattern constituting the hologram. Can be formed.

According to the second aspect of the present invention, the low softening point resin corresponding to the high softening point resin layer on the side of the support film with respect to the low softening point resin layer and at a portion corresponding to the low softening point resin layer. Since the printing ink layer has a smaller area than that of the layer, it forms a clear three-dimensional three-dimensional image of the hologram on the transferred object, and the hologram around the printed image on the transferred object disappears, resulting in a rainbow pattern. Of diffraction light disappears, and a printed image that can be clearly read and recognized by the naked eye can also be formed.

[0035]

The present invention will be described below with reference to examples.

Example 1 A 25 μm-thick biaxially stretched polyethylene terephthalate film was used as a support film, and a paint obtained by dissolving or dispersing chlorinated rubber in a solvent was applied to the entire surface of one side of the support film. .5
The coating was dried by a roll coating method to a thickness of μm to form a release layer.

Next, on the surface of the release layer, printing was performed by a gravure printing method using general-purpose gravure inks of three colors of cyan, magenta, and yellow to form a printing ink layer constituting a print image composed of character groups.

Further, a coating material for a high softening point resin layer having the following composition is applied to the entire surface of the release layer on which the printing ink layer is formed and the surface of the printing ink layer by a gravure coating method so as to have a dry film thickness of 1.0 μm. After drying, a high softening point resin layer was formed.

(Coating Composition for High Softening Point Resin Layer) Copolymer of methyl methacrylate and 2-hydroxyethyl methacrylate (glass transition point 90 ° C., OH value = 60) 20.0 parts by weight Xylene diisocyanate 5.0 parts by weight Nitro Cellulose 10.0 parts by weight Toluene 25.0 parts by weight Methyl ethyl ketone 30.0 parts by weight Isobutyl acetate 10.0 parts by weight Next, on the high softening point resin layer, a portion corresponding to the printing ink layer and occupied by the printing ink layer. Larger than the area,
A coating material for a low softening point resin layer having the following composition is applied by a gravure printing method to a region which can be seen over the entire periphery of the printing ink layer when viewed through the glass so as to have a dry film thickness of 1.0 μm, and then dried to obtain a low softening point resin layer. Was formed.

(Coating Composition for Low Softening Point Resin Layer) Copolymer of methyl methacrylate and 2-hydroxyethyl methacrylate (glass transition point 70 ° C., OH value = 100) 20.0 parts by weight Toluene diisocyanate 5.0 parts by weight Nitro Cellulose 10.0 parts by weight Toluene 20.0 parts by weight Methyl ethyl ketone 20.0 parts by weight Isobutyl acetate 25.0 parts by weight Next, the surface of the high softening point resin layer provided with the low softening point resin layer and the low softening point resin layer The surface of the low softening point resin layer and a portion where the low softening point resin layer does not exist are pressed in such a manner that the hologram stamper previously formed on the entire surface is pressed at 130 ° C. and 40 kg / cm ² to invert the unevenness of the hologram stamper surface. Simultaneously with the transfer to the surface of the high softening point resin layer, both the high softening point resin layer and the low softening point resin layer were cured.

Aluminum was deposited to a thickness of 40 nm by vacuum evaporation on the surface of the hologram stamper in which the surface of the hologram stamper was copied in an inverted shape, and a light-reflective metal thin film was formed along the surface of the surface.

Finally, a heat-sensitive adhesive paint having the following composition is applied on the entire surface of the light-reflective metal thin film by a gravure coating method so as to have a dry film thickness of 2 μm, and an adhesive layer is formed to form a hologram transfer foil. I asked.

(Coating composition for heat-sensitive adhesive) PVC resin 15.0 parts by weight Acrylic resin 10.0 parts by weight Methyl ethyl ketone 38.0 parts by weight Toluene 37.0 parts by weight The adhesive layer surface of the obtained hologram transfer foil was Laminated on a card made of rigid polyvinyl chloride resin, 140 ℃, 10kg
The film was heated and pressed from the side of the support film under the conditions of 0.1 cm / cm ² and 0.1 second, and the support film was peeled off and transferred.

The transferred hologram was accurately reproduced on the card except for the portion of the resin layer having a low softening point, and a three-dimensional three-dimensional image was clearly and clearly observed with the naked eye, and a rainbow pattern peculiar to a rainbow hologram was also observed. .

On the other hand, in the portion of the resin layer having a low softening point, the light-reflective metal thin film is white and turbid, and there is no glare, and a print image of a character group is present substantially at the center of the white and turbid portion. It was recognized clearly and readable with the white background.

Example 2 The hologram transfer foil was used in Example 1.
And the adhesive layer surface of the hologram transfer foil is superimposed on a card made of a hard polyvinyl chloride resin, and from the support film side at 130 ° C., 10 kg / cm ² and 0.1 seconds. Heating and pressurization was performed to peel off and remove the support film. The obtained hologram was accurately reproduced on the entire surface of the card, and a three-dimensional stereoscopic image was clearly and clearly observed with the naked eye, and a rainbow pattern peculiar to a rainbow hologram was also observed.

Next, the card was further heated at 140 ° C. and 10 ° C.
The resin layer having a low softening point was softened and deformed by heating and pressing under the condition of Kg / cm ² .

No change was observed in the hologram of the obtained card except for the portion of the resin layer having a low softening point. However, the portion of the resin layer having a low softening point had a light-reflective metal thin film that was white and turbid without glare and was white. A print image of a character group was present substantially at the center of the turbid portion, and this print image was recognized clearly and legible with the surrounding white background.

[0049]

According to the first aspect of the present invention, a clear three-dimensional three-dimensional image of the hologram is formed on the object to be transferred, and a part of the concave and convex pattern constituting the hologram disappears. This has the effect that an area without a hologram image can be formed together.

According to the second aspect of the present invention, while forming a clear three-dimensional three-dimensional image of the hologram on the transferred object, the hologram around the printed image on the transferred object disappears and the rainbow pattern is formed. Diffraction light disappears, and the printed image that can be clearly read and recognized by the naked eye can be formed.

[Brief description of the drawings]

FIG. 1 is a sectional view of a hologram transfer foil according to the first aspect of the present invention.

FIG. 2 is a cross-sectional view showing a transferred body after transfer.

FIG. 3 is a sectional view of a hologram transfer foil according to the invention of claim 2;

FIG. 4 is a sectional view of a hologram transfer foil according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Support film 20 Transfer layer 21 Release layer 22 High softening point resin layer 23 Low softening point resin layer 24 Light reflective metal thin film 25 Adhesive layer 26 Printing ink layer 30 Transfer receiving body

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G03H 1/00-5/00

Claims (2)

(57) [Claims] 1. A resin layer having a relief pattern formed on the surface of a relief hologram, a light-reflective metal thin film formed on the entire surface of the hologram-forming surface along the uneven surface, and the light-reflective metal thin film. A transfer layer comprising an adhesive layer provided on the surface, and a support film for releasably supporting the transfer layer, wherein the transfer layer is transferred to the surface of the transfer-receiving body via the adhesive layer and the surface thereof In the hologram transfer foil for forming a relief type hologram, the resin layer of the transfer layer is provided on a high softening point resin layer and a part of the high softening point resin layer, and a heat treatment during transfer or a heat treatment after transfer The relief type hologram is constituted by a low softening point resin layer, and the relief type hologram has a concave-convex pattern, and has a low softening point resin layer surface and a high softening point resin layer surface at a portion where the low softening point resin layer does not exist. A hologram transfer foil, wherein the hologram transfer foil is formed. 2. A printing ink layer having an area smaller than that of the corresponding low softening point resin layer on the surface of the high softening point resin layer at a position corresponding to the low softening point resin layer on the support film side of the low softening point resin layer. The hologram transfer foil according to claim 1, comprising: