JPH10129107A - Image indicating body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image indicating body, facilitating the discovery of the forgery, falcifying and modification of an image element or the like and capable of preventing them, by a method wherein information patterns, emitting fluorescence by a specified wave length, are formed between the substrate of the image indicating body and the layers of the same. SOLUTION: An image 3, such as a face photo or the like, is formed on a substrate 2, on which a first information pattern unit 14, containing fluorescence agent emitting infrared rays, is formed, while second information pattern units 15 are formed between either one of an image receiving layer 4 or a hologram layer 8 and a separable protective layer 5 to constitute an image indicating body. The information pattern units, provided in the image indicating body, become luminous by the irradiation of infrared rays and ultraviolet rays, having specified wave lengths, whereby the information patterns can be confirmed visually.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display having an image formed based on image data used for an identification card such as an ID card or a portable medium such as a passport. The present invention relates to an image display having an effective identification means against tampering such as tampering, and further having excellent decorativeness.

[0002]

2. Description of the Related Art In recent years, there has been an increasing tendency to incorporate a photograph of the owner's face as image information into a card or a portable medium. Cards generally include credit cards, cash cards, membership cards, ID cards, and the like, and portable media include passports, passbooks, and the like. For such cards and portable media, the accuracy of the matching is greatly improved by matching the photograph of the owner's face, and fraudulent acts such as giving psychological restraints to unauthorized users are prevented. Has a certain effect on Japanese Patent Application Laid-Open No. 6-67592 and Japanese Patent Application No. Hei 5-67592 disclose such an image on a medium such as a card.
Japanese Patent Application Laid-Open No. 6-106743 discloses a method for forming the image. Further, as disclosed in Japanese Patent Application Laid-Open No. 6-183184, a hologram or a fluorescent layer is added to a protective sheet disposed on an image to prevent the image from being forged. It was made to be able to confirm visually.

As shown in FIG. 33 (A), this image display is provided by a sublimation transfer means using a sublimable ink containing a sublimable (heat transferable) dye as a main component, or a hot melt transfer means using a hot melt ink. Card base material such as polyvinyl chloride
An image s is formed thereon, and as shown in FIG. 33B, an image s is obtained by laminating a white light reproduction type hologram image t on the image s. Further, in order to prevent forgery or alteration, Some holograms are monochromatic light reproducing holograms.

An image display having the above structure is disclosed in
As described in JP-A-139024, an image can be formed by transferring and forming an image on an intermediate transfer body having an image receiving layer, and transferring the image from the intermediate transfer body to the transfer receiving body together with the image receiving layer. As described in JP-A-6-71850, there is an intermediate transfer member in which a layer having a hologram is laminated on a part of the intermediate transfer member so that an image formed on the image display member can be recognized through the hologram.

[0005] A transfer body having this hologram needs to be supplied in large quantities and at low cost for commercial use. In particular, embossed duplication is used as a method suitable for the hologram. In this embossed duplication method, a hologram original is exposed to a photoresist to form an uneven relief surface, and this is used as a master to form a hologram made of a synthetic resin or the like using a mold obtained by applying nickel plating to the relief surface. Some models form a hologram image with unevenness by heating and pressing according to the layer, and in recent years, in addition to recording a single hologram image, a relief hologram formed by forming multiple hologram images into one by multiple exposure The use of a plurality of hologram images makes it difficult to forge and deter fraud.

As one of security techniques, an ultraviolet fluorescent coloring agent is contained in a card such as a credit card or an ID card, or a base material of a booklet such as a passport or a passbook, and the fluorescent coloring wavelength is determined using a black light or the like. There is a method of irradiating ultraviolet rays (about 365 nm) to cause a specific information pattern such as a character or a picture formed with an ultraviolet fluorescent coloring agent to emit a fluorescent color, and to determine whether the display is true or not. It is said that the effect is great. Therefore, it is considered to be used for identification media such as the above ID card and portable media such as passports, and the effect of using it for an image such as a face photograph which is a main target of forgery or falsification is great. It has been.

[0007]

However, when a material for forming an image, such as a sublimable (heat transferable) dye, lacks light fastness, the discoloration of an image formed by ultraviolet rays occurs. Generally, when formed on an image display body, an ultraviolet absorber is contained in a protective layer or the like laminated on the image to improve the light resistance by preventing the ultraviolet light from acting on the image. ing. For this reason, when a layer containing an ultraviolet absorber exists on an image, the irradiated ultraviolet light is absorbed by the ultraviolet absorber, and thus does not emit fluorescent light. was there. For this reason, there is a need for a true / false determination means that can easily determine whether the information such as the image on the image display body is fraudulent, falsified, or altered.

Accordingly, the present invention has been made in view of the above circumstances, and an information pattern which emits fluorescent light at a specific wavelength is formed between a base material of an image display and a layer between the image displays, thereby forging an image or the like. It is an object of the present invention to provide an image display that facilitates the detection of tampering and alteration and that can prevent such alteration.

[0009]

According to a first aspect of the present invention, there is provided an image display comprising an image receiving layer formed by recording an image on at least a part or the entire surface of a substrate, and an image receiving layer formed by sequentially laminating a protective layer. A display, comprising: an information pattern portion containing an infrared-emitting fluorescent agent that emits infrared light on the base material.

An image display according to a second aspect of the present invention comprises:
Image receiving layer recorded on at least a part or the entire surface of the substrate,
A fraud-preventing image display body in which a hologram layer and a protective layer are sequentially laminated, comprising an information pattern portion containing an infrared-emitting fluorescent material that emits infrared light on the base material.

An image display according to a third aspect of the present invention comprises:
An image display body obtained by sequentially laminating an image receiving layer and a protective layer each having an image recorded on at least a part or the entire surface of the base material,
The base material includes a first information pattern portion containing an infrared light emitting fluorescent agent that emits infrared light, and a second information pattern containing an ultraviolet light emitting fluorescent agent between the image receiving layer and the protective layer. It is characterized in that a part is formed.

An image display according to a fourth aspect of the present invention comprises:
Image receiving layer recorded on at least a part or the entire surface of the substrate,
A hologram layer, an image display formed by sequentially laminating a protective layer, comprising a first information pattern portion containing an infrared-emitting fluorescent agent that emits infrared light on the base material,
In addition, a second information pattern portion containing an ultraviolet light emitting fluorescent agent is formed in at least one of the layers between the image receiving layer and the protective layer.

An image display according to a fifth aspect of the present invention comprises:
The image display according to any one of claims 1 to 4,
The image receiving layer is characterized by containing an ultraviolet absorber.

An image display according to a sixth aspect of the present invention comprises:
5. The image display according to claim 2, wherein the hologram layer is a hologram forming layer having fine irregularities and a transparent thin film layer which is in contact with a relief surface of the hologram forming layer and has a larger refractive index than the hologram forming layer. It is characterized by the following.

An image display according to a seventh aspect of the present invention comprises:
5. The image display according to claim 2, wherein the hologram layer is a Lippmann hologram layer.

The image display according to claim 8 of the present invention provides:
The image display according to claim 3 or 4, wherein the infrared light emitting fluorescent agent and the ultraviolet light emitting fluorescent agent respectively form an information pattern of a specific shape by combining a plurality of information pattern portions, and each of the fluorescent light emitting wavelength region lights has a specific shape. The irradiation is characterized in that light is emitted at the same or different wavelength in the visible light region.

According to a ninth aspect of the present invention, there is provided the image display body,
9. The image display according to claim 8, wherein the ultraviolet light-emitting fluorescent agent is a short-wavelength ultraviolet light-emitting fluorescent agent that emits light with short wavelength ultraviolet light (about 200 to 300 nm) and a long wavelength ultraviolet light (about 300 to 300 nm).
(400 nm), or a long-wavelength ultraviolet light-emitting fluorescent agent that emits light at both wavelengths.

According to a tenth aspect of the present invention, there is provided the image display according to the ninth aspect, wherein each of the fluorescent light emitted by the infrared light emitting fluorescent agent, the short wavelength ultraviolet light emitting fluorescent agent, and the long wavelength ultraviolet light emitting fluorescent agent is used. The emission wavelength is red (R: about 640
780 nm), green (G: about 492 to 550 nm), and blue (B: about 430 to 492 nm).

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic sectional view of the image display of the first invention of the present invention, and FIG. 2A is an explanatory view schematically showing an information pattern portion of the image display of the present invention. FIG.
(B) is an explanatory view schematically showing a state in which the information pattern portion is colored with fluorescent light, FIG. 3 is a schematic sectional view of the base material,
FIG. 4 is a schematic sectional view of a transfer sheet for forming the image display of the first invention of the present invention, and FIG.
FIG. 6 is a schematic sectional view of an image display of the present invention, FIG. 6 is a schematic sectional view of a transfer sheet for forming the image display of the second invention of the present invention, and FIG. FIG. 8 is a schematic sectional view of an image display of the present invention, FIG. 8 is a schematic sectional view of a transfer sheet for forming the image display of the third invention of the present invention, and FIG. 9 is a fourth invention of the present invention. FIGS. 10 to 18 are schematic sectional views showing specific examples of the image display of the fourth invention of the present invention, and FIGS.
FIG. 27 is a schematic sectional view of each transfer sheet used for producing the image display of FIGS. 10 to 18, and FIGS.
FIG. 29C is a schematic explanatory diagram of an information pattern portion that emits fluorescent light at a specific wavelength, and FIG. 29 shows an information pattern having a specific shape formed by combining a plurality of information pattern portions shown in FIGS. 28A to 28C. FIG. 30 is a schematic explanatory view showing an example, and FIGS. 30 (a) to (d) are conceptual diagrams for explaining a manufacturing process of an image display using a transfer sheet. FIG. 31 shows an image display using a transfer sheet. It is explanatory drawing which shows the manufacturing process, FIG. 32 (a) and (b) is a top view which shows the external appearance of an image display body.

The image forming body 1 of the present invention is shown in FIG.
As shown in (a) and (b), an image 3 such as a face photograph or a name identifying an individual is displayed, and a credit card,
It can be used for cards such as cash cards, members' cards, ID cards, etc., and portable media such as passports, passbooks, etc., and has identifiable information provided by arbitrarily providing various other images according to applications. Medium. (B) is a laminate of the image 3 and the hologram image B (for example, a transparent reflection type hologram composed of a hologram forming layer on which a relief hologram is formed and a transparent thin film layer as a reflection layer). is there.

First, the image display 1 according to the first embodiment of the present invention shown in FIG. 1 is provided on a substrate 2 on which an information pattern portion 13 containing an infrared-emitting fluorescent agent which emits infrared light as shown in FIG. 3 is formed. And an image receiving layer 4 on which an image 3 such as a face photograph is formed, and a peelable protective layer 5. This information pattern part 1
Reference numeral 3 denotes an arbitrary shape that can be identified, such as a character, a picture, or a mark such as “TOP” as shown in FIGS. 2A and 2B, and emits fluorescent light in a visible light region when irradiated with infrared rays. An infrared-emitting fluorescent agent. This image display 1 has a heat-resistant base sheet 7, a peelable protective layer 5 shown in FIG.
On the transfer sheet 6 having the image receiving layer 4, a thermal transfer ribbon (k in FIG. 15) made of a sublimable ink containing a sublimable (heat transferable) dye as a main component or a hot-melt ink is used. An image 3 such as a pattern or a character is formed, and each layer other than the heat-resistant base sheet 6 (the peelable protective layer 5, the image receiving layer 4, the image 3, etc.) is transferred to the base material 2 to which the image 3 is transferred by a thermal transfer method. Thus, the image display 1 is obtained.

An image display 11 according to a second aspect of the present invention shown in FIG. 5 has a base material 2 on which an information pattern portion 13 containing an infrared-emitting fluorescent agent that emits infrared light is formed as in FIG. An image receiving layer 4 on which an image 3 such as a face photograph is formed, and a hologram layer 8 (in FIG. 5, a hologram forming layer 1 on which a relief-type hologram hologram image is formed)
A transparent reflective hologram composed of a transparent thin film layer 9 and a transparent thin film layer 9 as a reflective layer is described as an example), and a peelable protective layer 5 is formed. This image display 11 is made up of a heat-resistant base sheet 6, a peelable protective layer 5, and a hologram layer 8 (a hologram forming layer 10 having a relief-type hologram uneven hologram image and a reflection layer in FIG. 5). A transparent reflection type hologram composed of a transparent thin film layer 9 as an example), and a transfer sheet 12 having an image receiving layer 4
A thermal transfer ribbon made of a sublimable ink or a hot-melt ink containing a sublimable (heat transferable) dye as a main component (FIG. 15)
K) to form an image 3 on the image receiving layer 4 and transfer the transfer sheet 12 to the substrate 2 by thermal transfer to each layer other than the heat-resistant base sheet 6 (peelable protective layer 5, hologram layer 8 [hologram forming layer] 10, permeable thin film layer 9], adhesion inhibiting layer 5,
The image receiving layer 4 and the image 3 are transferred and formed, and the image display 11 is obtained.

Further, an image display 21 according to a third aspect of the present invention shown in FIG. 7 has a first information pattern portion 14 containing an infrared-emitting fluorescent agent which emits infrared rays similarly to FIG. An image receiving layer 4 in which an image 3 such as a face photograph is formed on a material 2 and a releasable protective layer 5 are provided, and a layer containing an ultraviolet light emitting fluorescent agent between the image receiving layer 4 and the releasable protective layer 5 is provided. Two information pattern units 15 are provided. This second
The information pattern portion 15 may be formed so that the information pattern portion 16a containing the short wavelength ultraviolet light emitting fluorescent agent and the information pattern portion 16b containing the long wavelength ultraviolet light emitting fluorescent agent are combined. This image display 21 is a sublimable (heat transferable) dye on a transfer sheet 20 having a heat-resistant base sheet 6, a peelable protective layer 5, a second information pattern portion 15, and an image receiving layer 4 shown in FIG. An image 3 such as a pattern or a character is formed on the image receiving layer 4 by a thermal transfer ribbon (k in FIG. 15) made of a sublimable ink or a hot-melt ink containing The layers other than the heat-resistant base sheet 6 (the peelable protective layer 5, the image receiving layer 4, the image 3, etc.) are transferred and formed on the material 2 by a thermal transfer method.
1 is obtained.

Next, an image display 31 according to a fourth aspect of the present invention shown in FIG. 9 has a first information pattern portion 14 containing an infrared-emitting fluorescent agent which emits light by infrared rays as in FIG. An image receiving layer 4 and a hologram layer 8 on which an image 3 such as a face photograph is formed on a base material 2 (in FIGS. 10 to 18, a hologram forming layer 10 on which a relief hologram uneven hologram image is formed and a hologram forming layer 10 as a reflection layer) A transparent reflection type hologram composed of a transparent thin film layer 9 is taken as an example), a peelable protective layer 5 is formed, and as shown in FIG.
The second layer is provided between any one of the hologram layer 8 and the peelable protective layer 5.
Information pattern portion 15 can be formed. More specifically, as shown in FIGS. 10 to 18, the second information pattern portion 15 is formed between any of the image receiving layer 4, the transparent thin film layer 9, the hologram forming layer 10, and the peelable protective layer 5. be able to. Further, as shown in FIGS. 11 to 13 and FIGS. 15 to 17, the second information pattern portion 15 may be provided between different layers, and the second information pattern portion 15 may be made of a short-wavelength ultraviolet light emitting fluorescent agent. Information pattern portion 16a containing and information pattern portion 16b containing a long wavelength ultraviolet light emitting fluorescent agent
May be formed so as to be combined. Further, the information pattern section 16 containing the short-wavelength ultraviolet light-emitting fluorescent agent is used.
a and the information pattern portion 16b containing the long-wavelength ultraviolet light emitting fluorescent agent may be provided between different layers.

This image display 31 is a transfer sheet 30 having a heat-resistant base sheet 6, a peelable protective layer 5, a hologram layer 8, a second information pattern portion 14, and an image receiving layer 4 shown in FIGS. An image 3 such as a picture or a character is formed on the image receiving layer 4 by a thermal transfer ribbon (k in FIG. 15) or the like made of a sublimable ink containing a sublimable (heat transferable) dye as a main component or a hot-melt ink. Then, each layer other than the heat-resistant base sheet 6 (the peelable protective layer 5, the hologram layer 8, the image receiving layer 4, the image 3, etc.) is transferred and formed on the base material 2, which is the transfer destination, by a thermal transfer method, and the image is displayed. A body 31 is obtained.

The image forming bodies 11 and 3 shown in FIGS.
In No. 1, a relief type hologram (rainbow hologram) composed of a hologram layer 8 having a transparent thin film layer 9 and a hologram forming layer 10 having a hologram image formed on a relief surface composed of fine irregularities is used in the present invention. The holograms that can be used are not limited to relief holograms, and other commonly used well-known holograms can be used.For example, a grating image including a fine diffraction grating, a configuration such as a Lippmann hologram can be used. it can.

In the present invention, since the information pattern A as shown in FIG. 2A is formed between the layers of the image display,
By irradiating infrared rays of a predetermined wavelength to the image display bodies 1 and 11 in FIG. 5, the presence of the information pattern A due to the fluorescent emission of the infrared-emitting fluorescent agent can be visually confirmed.
In the image display bodies 21 and 31 shown in FIG. 9, the information pattern portions provided between the respective layers by irradiation of infrared rays and ultraviolet rays of a predetermined wavelength have the information pattern A formed by the fluorescent light emission of the infrared light emitting fluorescent material and the fluorescent light emission of the ultraviolet light emitting fluorescent material, respectively. Presence can be confirmed visually. As described above, the existence is hardly visually recognized under normal visible light, and the specific information pattern A as shown in FIG. 2B can be visually confirmed by irradiation of infrared rays and / or ultraviolet rays of a predetermined wavelength. Things.

Further, in FIGS. 7 and 9, ultraviolet light emitting fluorescent agents having different fluorescent light emission wavelengths can be used.
As shown in (a) and (b), a plurality of information pattern portions 16
The information patterns a and 16b may be combined to form an information pattern of a specific shape, or a specific pattern may be divided and formed as each information pattern portion. The information pattern portions 16a and 16b made of different ultraviolet light emitting fluorescent agents can be formed between the same or different layers. Further, as shown in FIG. 28 (c), it is also possible to form an information pattern of a specific shape by combining with an information pattern portion 17 containing an infrared light emitting fluorescent agent that emits by infrared rays. Can be set as desired. Note that FIG. 9 shows an example in which an information pattern portion is formed between two layers. However, an information pattern portion may be provided between three or more layers. Of course, it is also possible to provide.

Thus, the fluorescence emission of the infrared-emitting fluorescent agent,
A wide variety of information patterns can be formed by combining the fluorescent emission of the ultraviolet light emitting fluorescent agent, the ultraviolet light emitting fluorescent agent having a different fluorescent emission wavelength, and the interlayer between these different layers. Note that an information pattern portion containing an infrared light emitting fluorescent agent having a different fluorescence emission wavelength may be formed so that a specific information pattern can be configured by combination. ADVANTAGE OF THE INVENTION According to this invention, an information pattern can be visually recognized from the outside, it becomes easy to find fraudulent acts, such as forgery and tampering, and it has the effect of preventing forgery. In addition, an infrared light emitting fluorescent agent constituting each information pattern,
Alternatively, a plurality of types of ultraviolet light emitting fluorescent agents can be used in combination. Further, in the present invention, the information pattern is formed by combining an infrared-emitting fluorescent agent, an infrared-emitting fluorescent agent and an ultraviolet-emitting fluorescent agent, or an ultraviolet-emitting fluorescent agent having a different fluorescent emission wavelength. An information pattern composed of a combination of ultraviolet light emitting fluorescent agents having a wavelength may be used.

Hereinafter, the configuration of the present invention will be described in detail. Note that the same reference numerals are given to portions having the same configuration in each of the drawings relating to the above-described image display of the present invention and the transfer sheet used for manufacturing the image display of the present invention.

First, the base material 2 is made of synthetic resin such as polyvinyl chloride resin, polyethylene terephthalate resin, polyethylene naphthalate resin, polyester resin, acrylic resin, polycarbonate resin, polymethyl methacrylate resin, polystyrene resin, ABS resin and the like. Natural resin, paper, synthetic paper, and the like can be mentioned, and these can be used alone or in combination as a composite, and are appropriately selected according to the application. The thickness is also set according to the application.

Information pattern portion 13 provided on base material 2
Alternatively, the infrared light emitting fluorescent light constituting the first information pattern unit 14
The optical layer is composed of an infrared-emitting fluorescent agent, a binder resin, a solvent, etc.
Consists of The infrared-emitting fluorescent agent is an infrared light (about 800 to about
(Nm) and excited with visible light (about 400 to about 800 n).
m) and an infrared-visible conversion fluorescent agent that emits light;
0 to about 900 nm) and a longer wavelength (about 980 to about 900 nm).
(1020 nm). The former infrared-visible
Conversion fluorescers are phosphors with very specific excitation mechanisms.
Using multiple low-energy infrared photons.
Excitation of visual emission is performed. There are two types of this excitation mechanism
One is excited by the excitation of another stage in the activator ion.
Raise Er³⁺And Ho³⁺(Rare earth) and other activators
Of the parent crystals and the other from the sensitizer
Multiple resonance energy transfer, ie, sensitizer Yb ³⁺Is red
It absorbs the outside line, and the emission center
Er³⁺, Tm³⁺, Ho³⁺Etc. that excite
is there. A specific example is YF_Three: Yb + Er, YF_Three: Y
b + Tm and BaFCI: Yb + Er. In addition,
The composition of the infrared-emitting fluorescent agent is usually
Divided into crystals and activators or emission centers dispersed therein,
It is described by connecting with (:). For example, “Zn” of ZnS: Mn
“S” is a host crystal, and “Mn” is an activator.

In the latter case, the composition is LiNd_0.9Yb
_0.1P_FourO₁₂, LiBi_0.2Nd_0.7Yb_0.1P
_FourO₁₂, Nd_0.9Yb_0.1Nd_Five(MoO_Four)_Four, NaNd
_0.9Yb_0.1P_FourO₁₂, Nd_0.8Yb_0.2Na_Five(WO_Four)
_Four, Nd_0.8Yb_0.2Na_Five(Mo_0.5W_0.5O_Four)_Four, C
e_0.05Gd_0.05Nd_0.75Yb_0.15Na_Five(W_0.7Mo_0.3
O_Four)_Four, Nd_0.9Yb_0.1Al_Three(BO_Three)_Four, Nd_0.9Y
b_0.1Al_2.7Cr_0.3(BO_Three) _Four, Nd_0.6Yb_0.4P
_FiveO₁₄Nd_0.8Yb_0.2K_Three(PO_Four)_TwoEtc.

The binder resin is not particularly limited. For example, an acrylic resin, a vinyl chloride-vinyl acetate copolymer-based resin, etc., and the solvent is not particularly limited. Can be used.

As described above, the infrared fluorescent light-emitting composition comprising an infrared light-emitting fluorescent agent, a binder resin, a solvent, and the like can be used in various printing methods such as a gravure printing method, an offset printing method, a screen printing method, and various coating methods such as a bar coat and a gravure coat. It can be formed in any shape, such as letters, numbers, marks, pictures, etc., by the arbitrarily selected forming method. In FIG. 2A, the character "TOP" of the information pattern A is formed. The mixing ratio of the infrared light emitting fluorescent layer constituting the information pattern portion 13 or the first information pattern portion 14 is not particularly limited, as long as the fluorescence by the light receiving element can be detected at the time of coloring. Also,
The film thickness can be confirmed by fluorescence emission by irradiation of infrared rays having a predetermined wavelength, and it is usually sufficient that the film thickness is hard to be visually recognized from the outer surface of the image display body, and is about 0.05 to 10 μm, preferably about 1 to 10 μm. ５5 μm.

As shown in FIG. 2B, the information pattern section 1
The infrared light emitting fluorescent layer constituting the third or first information pattern portion 14 is usually in a state in which it is hard to be seen from the outside as characters of “TOP” of the information pattern A, and emits fluorescent light by irradiation with infrared light of a predetermined wavelength. Since the letters "TOP" appear to be prominent, it can be used as proof that the image forming body has been formed properly and that the image forming body has been fraudulently altered, falsified, or altered. it can. According to this, the fraud can be determined at a glance, and the damage can be prevented beforehand.

A pattern is formed by a plurality of infrared fluorescent light emitting compositions using infrared light emitting fluorescent agents having different infrared fluorescent light emission wavelengths, and these patterns are combined to form specific characters, numerals, marks, patterns, etc. An information pattern section may be configured, and these are simultaneously irradiated with infrared rays of a predetermined wavelength to display a pattern.

The image receiving layer 4 is composed of transfer sheets 6, 12, 20, and 30 used for producing the image display of the present invention.
After being formed, it is transferred to the base material 2 through a thermal transfer process. It is preferable that the image receiving layer 4 is capable of stably forming the image 3 and has good thermal adhesion to the substrate 2. Details will be described in the following transfer sheet.

Image 3 is composed of a yellow, magenta, cyan sublimable transfer material and / or a black hot-melt transfer material (wax-type transfer material).
Usually, it is arbitrarily formed from these transfer materials which have been made into a thermal transfer ribbon. As described in, for example, JP-A-3-79384 and the like, the sublimation transfer material is sublimated or melt-transferred by heat and penetrates the image receiving layer. For example, a binder and a dye are used as main components, and Resins mainly containing a crosslinked product of polyvinyl alcohol such as polyvinyl acetal and polyvinyl butyral. Examples of dyes include diarylmethane, triarylmethane, thiazole, methine, azomethane, xanthene, axazine, and thiazine. System, azine system, acridine system, azo system, spirodipyran system, isodinospiropyran system, fluoran system, rhodamine dactam system and anthraquinone system. The heat-fusible transfer material is a material that is melted by heat and fused to the image receiving layer, and includes, for example, a wax layer and a heat transfer layer. Waxes include plant waxes such as candelilla wax, carnauba wax, rice wax, and wax, animal waxes such as beeswax, lanolin, and whale wax, petroleum waxes such as montan wax and petrolatum, and polyethylene as a synthetic wax. Synthetic hydrocarbons such as waxes, modified waxes such as montan wax derivatives, hydrogenated waxes such as hardened castor oil, lauric acid, balmitic acid, myristic acid,
There are fatty acids such as stearic acid, and waxes such as fatty acid amides, fatty acid anilides, and imido waxes. Examples of resins include acrylic, styrene, rosin, vinyl, acetal, and rubber resins.

The hot-melt transfer material is, for example, a saturated polyester resin, polyvinyl chloride, polyvinyl chloride resin such as polyvinyl chloride-vinyl acetate, polymethyl acrylate,
Polyacrylic acid-2-naphthyl, polymethyl methacrylate, polyethyl methacrylate, polymethacrylic acid-t-
Butyl, polyphenyl methacrylate, copolymer of methyl methacrylate and alkyl methacrylate (however, alkyl group has 2 to 6 carbon atoms) Acrylic resin such as polymethylchloroacrylate, acrylic-styrene copolymer, polystyrene, polydivinyl Resins of vinyl resins such as benzene, polyvinyl toluene, styrene-butadiene copolymer, and coloring agents such as titanium oxide, calcium carbonate, Hansa Yellow, Oil Em 2G, Oil Black, Pyrazolone Orange, Oil Red, Bengala, Anthraquinone Violet, and Phthalocyanine Blue , Aluminum powder, bronze powder, pearl essence, magnetic powder, carbon black and the like.

Further, as shown in FIGS. 4 and 7, the transfer sheet 6 on which these images 3 are formed once, which is used for manufacturing the image display 1, is peeled off on a heat-resistant base sheet 7 as a support. A transfer sheet 20 on which these images 3 are formed once, which is provided with the respective layers of the protective layer 5 and the image receiving layer 4 and is used for manufacturing the image display 11 as shown in FIGS. Reference numeral 30 denotes a peelable protective layer 5 and a hologram layer 8 (FIGS. 5 and 1) on a heat-resistant base sheet 7 as a support.
9 to 27 exemplify a transparent reflection type hologram composed of a hologram forming layer 10 on which a relief type hologram uneven hologram image is formed and a transparent thin film layer 9 as a reflection layer), and each layer of the image receiving layer 4 Is provided. The heat-resistant base sheet 7 is a sheet having heat resistance without softening and deformation due to heat and pressure during thermal transfer. Examples thereof include a polyethylene terephthalate film, a polyethylene naphthalate film, polyvinyl chloride, polyester, polycarbonate, polymethacrylic acid. Synthetic resins such as methyl and polystyrene, natural resins, paper, synthetic paper, and the like can be used, and they can be used alone or in combination as a composite. The thickness of the heat-resistant base sheet 7 is 2 to 100 μm, preferably Is 9 to 50 μm.

The releasable protective layer 5, together with the image receiving layer 4, is peeled off from the heat-resistant base sheet 7 when transferred to the substrate 2 of the image displays 1, 11, 21 and 31. Since it is exposed to the outside on the image display bodies 1, 11, 21, and 31, the function of protecting the underlying image receiving layer 4, hologram forming layer, and the like from chemical damage and mechanical damage due to penetration of chemicals and solvents, etc. In order to provide both functions, a mixture of a thermoplastic resin and an anti-friction agent is used.

The thermoplastic resin prevents penetration of chemicals such as plasticizers, acids, alkalis, alcohols, and kerosene,
This suppresses the occurrence of scratches due to scratching. For example,
Examples include polymethyl methacrylate, epoxy resin, thermoplastic acrylic resin, chlorinated rubber resin, vinyl chloride-vinyl acetate copolymer resin, cellulose resin, and chlorinated polypropylene resin. These polymethyl methacrylates and epoxy resins have excellent plasticizer resistance among existing thermoplastic resins, and are substances that can be easily peeled off from the heat-resistant base sheet 11. The plasticizer is contained in a soft vinyl sheet, a plastic eraser, or the like, and has an adverse effect such that when the plasticizer comes into contact with the plastic sheet, it migrates to the image surface and causes fading of the image.

The anti-friction agent improves abrasion resistance and scratch resistance, and includes, for example, Teflon powder; polyethylene powder; animal wax, vegetable wax,
Natural wax such as mineral wax and petroleum wax; synthetic hydrocarbon wax, aliphatic alcohol and acid wax, fatty acid ester and glycerite wax, hydrogenated wax, synthetic ketone wax, amine and amide wax, chlorination Synthetic wax such as hydrocarbon wax, synthetic animal wax, and α-olein wax; and metal salts of higher fatty acids such as zinc stearate.

The mixing ratio of the thermoplastic resin and the anti-friction agent is such that the thermoplastic resin is 85 to 95 parts by weight with respect to 100 parts by weight.
It is preferable that the amount of the anti-friction agent be 5 to 15 parts by weight.
Further, the coating amount of the peelable protective layer 5 is preferably about 1 to 3 g / m ² .

The release protective layer 5 may further contain a release improver such as a linear saturated polyester resin for improving the cuttability of the transfer portion from the transfer sheet during thermal transfer. This mixing ratio is 0 to 3 with respect to 100 parts by weight.
Desirably about parts by weight. Note that it is desirable that no other additive such as an ultraviolet absorber be added to the release layer. These additions cause a decrease in chemical resistance, a penetration of chemicals such as plasticizers and solvents, and a deterioration in mechanical strength.

The method for forming the peelable protective layer 5 is as follows.
It is formed by applying and drying the heat-resistant base sheet 7 using a known coating means such as a gravure coat, a roll coat, and a bar coat.

The image receiving layer 4 forms an image 3 by a thermal transfer means using a thermal transfer ribbon (not shown) having a sublimable or hot-melt transfer material or the like.
The image receiving layer 4 on which the image 3 is formed constitutes a part of the image display bodies 1 and 11. That is, for the image receiving layer 4, a thermoplastic resin capable of forming an image made of a sublimable or heat-fusible transfer material by a thermal transfer unit and having thermal adhesion to the substrate 2 is used.

When the thermal melting temperature of the thermoplastic resin is low, a part of the thermoplastic resin of the image receiving layer 4 may be thermally fused (transferred) to a thermal transfer ribbon (not shown).
In order to prevent this, it is conceivable to use a thermoplastic resin having a high heat melting temperature. However, a heat roll, a hot plate in a heat transfer step of transferring the image receiving layer 4 on which the image 3 of the transfer sheet 12 is formed to the base material 2 are considered. It is necessary to set a high temperature setting of the heating means such as. However, there is a problem that the high temperature causes deterioration (fading) of the image 3 made of a sublimable dye or the like and thermal damage to the substrate 2. An image receiving layer 4 is formed on a thermal transfer ribbon (not shown).
It is conceivable that an additive such as silicon is mixed into the image receiving layer 4 in order to reduce the adhesiveness of the image receiving layer 4 in order to prevent heat fusion of the image receiving layer 4, but the adhesiveness of the image receiving layer 4 to the substrate 2 is deteriorated. There's a problem. In this case, the problem can be solved by setting the glass transition point of the thermoplastic resin to 50 ° C. or higher and adding the filler to form the image receiving layer 4.

The thermoplastic resin used for the image receiving layer 4 preferably has a glass transition point (Tg) of 130 ° C. or less. The temperature at the time of thermally transferring the layer 4 to the substrate 2 needs to be high, and the substrate 2 such as a card may be deformed by heat.

Examples of such a thermoplastic resin include polyesters such as linear saturated polyesters, vinyl chloride resins such as polyvinyl chloride and vinyl chloride-vinyl acetate copolymer resin, polyacrylic acid, polyacrylic acid-2. -Methoxyethyl, polymethyl acrylate, polyacrylsan-2-naphthyl, isobornyl polyacrylate, polymethacrylomethyl, polyacrylonitrile, polymethylchloroacrylate, polymethyl methacrylate, polyethyl methacrylate, polymethacrylate-tert -Acrylic resins such as butyl, polybutyl methacrylate, polyphenyl methacrylate, copolymer resins of methyl methacrylate and alkyl methacrylate (wherein the alkyl group has 2 to 6 carbon atoms), polystyrene, polydivinylbenzene, polyvinyl Benze , Styrene - butadiene copolymer resin, styrene-alkyl methacrylate (carbon number of wherein the alkyl group is 2-6) include vinyl resins such as.

Further, when the image 3 is formed on the surface of the image receiving layer 4 by a thermal head using a thermal transfer ribbon (not shown), the main component of the image receiving layer 4 is made of a thermoplastic resin. Since the image receiving layer 4 is thermally fused to the dye layer of the thermal transfer ribbon (not shown) and the image 3 becomes unclear, a filler having an anti-blocking property in the thermoplastic resin for preventing the thermal fusion, particularly the thermal melting temperature ( (In the case of an organic filler, a softening point or a decomposition point, and in the case of an inorganic filler, a melting point) Add an inorganic or organic filler having a temperature of 200 ° C. or more.

Examples of such an organic filler include polytetrafluoroethylene fine particles, starch, silicone resin fine particles, polyacrylonitrile fine particles, and cured resin fine particles made from benzognamine resin and melamine resin. Examples of the zero-free filler include calcium carbonate, talc, kaolin, zinc oxide, titanium oxide, silicon oxide, aluminum hydroxide, and magnesium oxide.

The mixing ratio of the thermoplastic resin and the filler may be in the range of 1 to 200 parts by weight of the filler with respect to 100 parts by weight of the thermoplastic resin. The method for coating the image receiving layer 4 is to first form the image receiving layer composition into a coating with a suitable solvent, and then apply and dry the coating using a known coating means such as gravure coating, roll coating, bar coating, and the like. . Application amount is 1
３3 g / m ² .

Further, in order to prevent discoloration of the dye constituting the image 3 due to ultraviolet rays, the maximum absorption wavelength 2
An ultraviolet absorber of 50 to 400 nm may be added. Examples of such an ultraviolet absorber include phenyl salicylate, p-tert-butylphenyl salicylate,
salicylic acid-based ultraviolet absorbers such as p-octylphenyl salicylate, 2,4-dihydroxybenzophenone,
-Hydroxybenzophenone, 2-hydroxy-4-octoxybenzophenone, 2-hydroxy-4-dodecyloxybenzophenone, 2,2'-dihydroxy-4
-Methoxybenzophenone, 2,2'-dihydroxy-
Benzophenone-based ultraviolet absorbers such as 4,4'-dimethoxybenzophenone and 2-hydroxy-4-methoxy-5-sulfobenzophenone, 2- (2'-hydroxy-
5′-methylphenyl) benzotriazole, 2-
(2′-hydroxy-5′-tert-butylphenyl) benzotriazole, 2- (2′-hydroxy-
3'-tert-butyl-5'-methylphenyl) benzotriazole, 2- (2'-hydroxy-3 ', 5'
Benzotriazole ultraviolet absorbers such as -di-tert-butylphenyl) -5-chlorobenzotriazole and 2- (2'-hydroxy-3 ', 5'-ditert-amylphenyl) benzotriazole; 2-ethylhexyl-2 And cyanoacrylate-based ultraviolet absorbers such as -cyano-3,3'-diphenylacrylate and ethyl-2-cyano-3,3-diphenylacrylate.

The proportion of the ultraviolet absorber may be in the range of 5 to 40 parts by weight based on 100 parts by weight of the mixture comprising the thermoplastic resin and the filler.

The hologram layer 8 used in the image forming body 11 of the second invention and the image forming body 31 of the fourth invention exemplifies a surface relief type hologram composed of a fine uneven pattern. A hologram forming layer 10 and a transparent thin film layer 9 are provided. The hologram forming layer 10 is preferably made of a resin having good embossing properties, hardly causing press unevenness, a bright reproduced image, and good adhesion to the peelable protective layer and the transparent thin film layer. For example, vinyl chloride-vinyl acetate copolymer, urethane resin, polycarbonate resin,
Thermoplastic resins such as polystyrene resin and polyvinyl chloride resin, unsaturated polyester resin, melamine resin, epoxy resin, urethane (meth) acrylate, polyester (meth) acrylate, epoxy (meth) acrylate, polyol (meth) acrylate, melamine ( Thermosetting resins such as (meth) acrylate and triazine (meth) acrylate and mixtures thereof, and thermoforming materials having radically polymerizable unsaturated groups can be used. Any resin can be used as long as it has a stability capable of forming a polymer.

Further, as an agent for improving coating suitability and transferability, a cellulose resin such as nitrocellulose, acetylcellulose, cellulose acetate butyrate, cellulose acetate propionate, ethylcellulose, methylcellulose and the like can be added.

To coat such a hologram-forming layer 10, the transfer sheet 1 shown in FIG. 5 is coated with a resin that has been made into a coating by a known coating method such as roll coating or blade coating.
2 can be formed by coating and drying on the releasable protective layer 5, and the thickness thereof is set to about 0.5 to 5 μm.

The hologram-forming layer 10 formed in this manner adheres moderately to the heat-resistant base sheet 7 coated with the release adhesive layer 6, and has excellent formability by heating and pressing during embossing. With nickel on the surface,
A transparent thin film layer 9 that does not show adhesion to a surface relief hologram stamper plated with gold, chrome, etc.
Shows good adhesiveness, and the film breakability required at the time of transfer to a substrate is also good.

A hologram forming layer 10 is formed with a white light or monochromatic light reproducing hologram on which a fine relief pattern is recorded. This hologram is produced by preparing a transmission original of the hologram. A hologram information area relief pattern is formed by a hologram photographing method using a transparent original (not shown). A transmissive document and a diffusion plate are arranged in an overlapping state, and a support coated with a photosensitive material is arranged below. Then, when incident light is incident from above the diffusion plate, the light is diffused by the diffusion plate and selectively passes through the transmission original. The light transmitted through the transparent original is called object light. The object light interferes with the reference light irradiated from above at 12 o'clock when the support coated with the photosensitive material is viewed from above and obliquely from above when viewed from the side, and corresponds to the hologram information area on the photosensitive material. Record the interference fringes.

After such an exposure treatment, the photosensitive material is developed to form a master hologram having a relief pattern, and a stamper is manufactured based on the master hologram by known electroforming means. With this stamper, a relief pattern is formed on the hologram forming layer.

Next, as the material constituting the transparent thin film layer 9, the refractive index of the hologram forming layer 10 (refractive index n = 1.
A material having a higher refractive index than 3 to 1.5) and a high transmittance in the visible light region is used. When a transparent thin film layer having a high refractive index is provided along the relief pattern surface of the hologram forming layer, light in the transparent thin film layer can be obtained within the reproducible angle range of the hologram image due to the angle dependence of reproduction, which is a feature of the hologram. This is because the reflectance becomes maximum and functions as a “reflection hologram”, but only functions as a mere transparent body outside the reproducible angle range of the hologram image, and the image 3 can be seen through.
Table 1 shows a material constituting such a transparent thin film layer.
And the inorganic materials described in (1).

[0065]

[Table 1]

As a method for forming the transparent thin film layer, known film forming means such as a vacuum evaporation method, a sputtering method, and an ion plating method can be used. Appropriate. Further, a plurality of transmissive thin film layers may be overlapped, a combination of transmissive thin film layers having different refractive indices, or a multilayer film in which high refractive index layers and low refractive index layers are alternately laminated.

In addition, a hologram such as a known hologram such as a two-beam interference method, a grating hologram having a fine unevenness formed by a diffraction grating (grating) by an electron beam (EB), or a Lippmann hologram can be used. It is possible to use variously according to the application without being performed.

Next, as described above, the image forming body 21 of the third invention shown in FIG. 7 and the fourth embodiment shown in FIG. 9 and FIGS.
In the image forming body 31 of the invention of the first aspect, the first information pattern portion 14 containing an infrared-emitting fluorescent agent that emits by infrared rays,
Between the image receiving layer 4 and the peelable protective layer 5, or between the image receiving layer 4,
A second information pattern portion 15 containing an ultraviolet light emitting fluorescent agent is provided between any one of the hologram layer 8 and the peelable protective layer 5. The ultraviolet light emitting fluorescent layer constituting the second information pattern portion 15 is made of an ultraviolet light emitting fluorescent agent, a binder resin, a solvent and the like.

The ultraviolet light emitting fluorescent agent is excited by ultraviolet light, and the peak of the spectrum emitted when returning to an energy level lower than this is in the wavelength range of blue, green, red and the like. It is obtained by adding a trace amount of metal (copper, silver, manganese, bismuth, lead, or the like) as an activator to a high-purity phosphor such as a sulfide of a class of metals, and firing at a high temperature. The hue, brightness, and degree of color decay of the ultraviolet light emitting fluorescent agent can be adjusted by a combination of the host crystal and the activator. As a specific example, C
a ₂ B ₅ O ₉ Cl: Eu ²⁺ , CaWO ₄ , ZnO: Z
n, Zn ₂ SiO ₄ : Mn, Y ₂ O ₂ S: Eu, Zn
S: Ag, YVO ₄ : Eu, Y ₂ O ₃ : Eu, Gd ₂ O
₂ S: Tb, La ₂ O ₂ S: Tb, Y ₃ Al ₅ O ₁₂ : C
_{e, Sr 5 (PO 4)} 3 Cl: Eu, 3 (Ba, Mg) O
.8Al ₂ O ₃ : Eu, Zn ₂ GeO ₄ : Mn, Y
(P, V) O ₄ : Eu, 0.5MgF ₂ · 3.5MgO
GeO ₂ : Mn, ZnS: Cu, ZnS: Mn, etc., and these are used alone, or several kinds are arbitrarily selected and used. These fluorescence spectra have peaks outside the wavelength range of blue, green, red, and the like, and can be appropriately selected according to a desired fluorescence spectrum.

As described above, the ultraviolet fluorescent light-emitting composition comprising an ultraviolet light-emitting fluorescent agent, a binder resin, a solvent, and the like can be used in various printing methods such as a gravure printing method, an offset printing method, a screen printing method, and various coating methods such as a bar coat and a gravure coat. Method, between each layer by the arbitrarily selected formation method,
It can be formed in any shape, such as the whole surface or a part, especially letters, numbers, marks, and pictures. For example, FIG.
The character "TOP" of the information pattern A can be formed. The mixing ratio of the ultraviolet light emitting fluorescent layer constituting the second information pattern portion 15 is not particularly limited,
It suffices if fluorescence from the light receiving element can be detected at the time of color development.
Further, the film thickness can be confirmed by fluorescence emission by irradiation with ultraviolet light of a predetermined wavelength, and it is usually sufficient that the film thickness is hard to be visually recognized from the outer surface of the image display body.
m, preferably about 1-5 nm.

Further, as shown in FIG. 2 (b), the ultraviolet light emitting fluorescent layer constituting the information pattern portion 13 or the first information pattern portion 14 is usually visually observed from the outside as a character of "TOP" of the information pattern A. It is difficult for the image-forming body to appear, and the character of "TOP" appears to be prominent, and the image-forming body is legitimate. Can be used as proof of whether or not fraud has been committed. According to this, since the fraud can be determined at a glance, it is possible to prevent damage caused by fraud beforehand.

The ultraviolet light emitting fluorescent agent is used in a short wavelength region of ultraviolet light (about 200 to 300 nm, particularly preferably 254 nm).
nm), a short-wavelength ultraviolet light-emitting fluorescent agent emitting light at a wavelength of about 300 to 400 nm, particularly preferably 36 to 400 nm.
Long-wavelength ultraviolet light-emitting fluorescent agents that emit light at 5 nm). These are processes in which the externally applied energy is absorbed by the phosphor and converted into visible light emission until the emission center becomes excited. (Excitation process) is different. High-energy stimuli, such as short-wavelength ultraviolet light, are first absorbed by the mother and produce electron-hole pairs or free electrons and holes, which reach the emission center where they recombine radiatively. This produces light emission. On the other hand, in the case of stimulation with long-wavelength ultraviolet light, the emission center often directly absorbs the photon.

FIG. 9 shows a plurality of ultraviolet fluorescent light-emitting compositions using ultraviolet light-emitting fluorescent agents having different excitation wavelengths.
Pattern part 1 containing short wavelength ultraviolet light emitting fluorescent agent
The second information pattern portion 15 can be formed such that the information pattern portion 16b containing the long wavelength ultraviolet light emitting fluorescent agent is combined with 6a. In this manner, the information pattern portions may be combined to form an information pattern such as a specific character, numeral, mark, picture, or the like, or a specific pattern may be divided and formed as each information pattern portion. Good. A pattern is displayed by simultaneously irradiating these with ultraviolet rays of a predetermined wavelength.

FIGS. 28A to 28C are schematic illustrations of an information pattern portion which emits fluorescent light at a specific wavelength.
FIG. 28A shows an information pattern portion 16a containing a long-wavelength ultraviolet light emitting fluorescent agent, and FIG. 28B shows an information pattern portion 16b containing a short-wavelength ultraviolet light emitting fluorescent agent. In FIG. 29), an information pattern portion 17 containing an infrared-emitting fluorescent agent is formed. When ultraviolet rays of a predetermined wavelength are simultaneously irradiated, the information pattern portion 17 is composed of the characters "TOP" in which the information pattern portions are combined as shown in FIG. An information pattern can be displayed.

More specifically, the information pattern portion which emits fluorescent light at the above-mentioned specific wavelength is mainly composed of red (R: about 640 to 780 nm) and green (G: about 492 to 5).
50 (nm) and blue (B: about 430-492 nm), the red (R), green (G), and blue (B) colors corresponding to the three primary colors of light in the visible light range can be obtained. Since each emits light, color image information can be formed. For example, a color original such as a photograph is separated into red (R), green (G), and blue (B) colors, and the information pattern portions are respectively formed. The color image can be reproduced by simultaneously irradiating light from three light sources having wavelengths corresponding to the fluorescence emission. Since such an image can be visually checked, the accuracy of authenticity determination is extremely high, and the forgery prevention property is further improved.

Although not shown, visible information or information that can be read mechanically is applied to the image forming bodies 1, 11, 21, and 31 of the present invention by multicolor character patterns (characters, numerals,
Alphabet, mark, etc.) and barcode, identification code such as carla code, etc., provided by ordinary silk screen printing, offset printing, gravure printing,
It can be formed on at least a part of the hologram forming layer or the transparent thin film layer. The ink to be used is not particularly limited, but may be any as long as it does not deteriorate the hologram forming layer and the transparent thin film layer.

Further, at least one of a fluorescent material, an infrared absorbing material, and a magnetic material can be contained in the printing ink forming the visible information or the mechanically readable information. By forming with an absorbing ink or a magnetic ink, the presence or absence of the presence can be verified by black lamp irradiation, an infrared scope, a magnetic sensor or the like, and the verification means can be mechanized.

Next, a brief description will be given of a method of manufacturing the image display bodies 1, 11, 21, and 31 by the thermal transfer method. The description will be made using a transfer sheet 12 shown in FIG. 6 used for forming the image display 11 shown in FIG. 5 as an example.

First, as shown in FIG. 6, a transfer sheet 12 is made of a heat-resistant base sheet 7 made of polyethylene terephthalate or the like, a peelable protective layer 5 made of a thermoplastic acrylic resin or the like, and a hologram layer 8 (specifically, a hologram layer 8). Hologram-forming layer 10 having a relief pattern of, and a transparent thin film layer 9 having a higher refractive index than hologram-forming layer 10)
And an image receiving layer 4 made of a resin material which is dyed with a sublimable (heat transferable) dye, is capable of hot-melt transfer, and has thermal adhesiveness to a transfer target. [FIG. 30 (a)]

The transfer sheet 12 is conveyed to a sublimation transfer device j whose main part is composed of a drum h and a thermal head i, as shown in FIG. 31, and a transfer ribbon whose coloring material is a sublimable dye. k, a dye layer (not shown) is brought into contact with the image receiving layer 4 of the transfer sheet 12 and the transfer ribbon k
The thermal head i is pressed from the side, and a heating element group (not shown) of the thermal head i is appropriately heated based on the image data to form the image 3 on the image receiving layer 4 [FIG.
(B)]. When an image is formed in multiple colors, transfer ribbons having different color tones (for example, yellow, magenta, cyan, etc.) are applied, and a similar process is repeated to form a multicolor image on the image receiving layer 4. In the case of hot-melt transfer (WAX transfer), the entire resin of the ink layer of the transfer ribbon is transferred, and an image of the ink layer is formed on the image receiving layer 4.

Next, the image receiving layer 4 of the transfer sheet 12 on which an image is formed is brought into contact with the base material 2 on which the information pattern portion containing the infrared light emitting fluorescent agent that emits infrared light is formed [FIG. )], A heating means n such as a hot roll or a hot plate is pressed and heated from the transfer sheet 12 side, the image receiving layer 4 is adhered to the base material 2, and the heat-resistant base sheet 7 is peeled off from the transfer sheet 12 to display an image. The body 11 is manufactured [FIG.
0 (d)].

Hereinafter, the present invention will be described with reference to specific examples. <Example 1> [Transfer sheet] The transfer sheet 6 shown in FIG.
m, on a heat-resistant base sheet 7 made of a transparent polyethylene terephthalate film having the following composition by a gravure method.
At 0 ° C., a peelable protective layer 5 having a thickness of 1.5 μm was formed. ○ Peelable protective layer composition Acrylic resin 30 parts Polyester resin 5 parts Toluene 40 parts Methyl ethyl ketone 40 parts Methyl isobutyl ketone 20 parts

Next, an image receiving layer composition having the following composition was applied onto the peelable protective layer 5 by a gravure method, and the drying temperature was 1
At 10 ° C., an image receiving layer 4 having a thickness of 2.0 μm was formed. ○ Image-receiving layer composition Vinyl chloride-vinyl acetate copolymer 30 parts Polyester resin 30 parts UV absorber (benzotriazole type) 6 parts Methyl ethyl ketone 50 parts Toluene 50 parts

[Substrate] An infrared-emitting fluorescent layer constituting the information pattern portion 13 provided on the substrate 2 made of polyvinyl chloride is coated with an infrared-emitting fluorescent layer composition having the following composition by a gravure method. The film was formed at a drying temperature of 110 ° C. to a thickness of 2.0 μm. ○ Infrared emitting fluorescent layer composition Acrylic resin 30 parts Infrared emitting fluorescent agent (YF ₃ : Yb + Er) 12 parts Methyl ethyl ketone 50 parts Toluene 50 parts

[Transfer Ribbon] Three color dyes (yellow, magenta, cyan) are respectively dispersed in polyvinyl butyral to prepare a dye ink, and each color is alternately formed on a 6 μm thick polyester film using a gravure coater. It was applied and dried so as to be arranged, thereby producing a transfer ribbon having three color dye layers.

The above transfer sheet and transfer ribbon are shown in FIG.
And a heating element group of the thermal head i is caused to generate heat based on the image data, and a multicolor image 3 is formed on the image receiving layer 4 of the transfer sheet by the transfer ribbon made of the above dye. The image receiving layer 4 of the transfer sheet 12 is brought into contact with the base material 2 on which the information pattern portion 13 containing the luminescent fluorescent material is formed, and the transfer sheet is pressurized and heated (heating temperature: 150 ° C.) from the transfer sheet side by heating means. The image receiving layer 4 is pressed on the material 2, and the heat-resistant base sheet 7 is transferred from the transfer sheet 6.
Was peeled off to produce an image display 1 having an image 3 and an information pattern portion 13 as shown in FIG.

An infrared laser beam (approximately 8
(50 nm), bright green (about 525 nm) light emission could be visually observed.

Example 2 [Transfer Sheet] The transfer sheet 12 shown in FIG.
Between the image receiving layer 4 and the peelable protective layer 6 of the transfer sheet 6
A hologram forming layer composition having a relief hologram pattern having the following composition is applied by a gravure method so as to cover at least a part thereof, and a drying temperature of 110 ° C.
A hologram-forming layer 10 having a thickness of 1.0 μm was formed.

Hologram-forming layer composition Vinyl chloride-vinyl acetate copolymer 20 parts Urethane resin 15 parts Methyl ethyl ketone 70 parts Toluene 30 parts For the hologram-forming layer 10, a press plate on which a predetermined hologram image was prepared was placed on a plate surface temperature. 120 ° C, pressure 2k
gf / cm ² , speed 10 m / min. A hologram image was formed, and a 50 nm thick transparent thin film layer 9 of a material (ZnS) having a higher refractive index than the hologram formation layer was transferred and formed on the hologram formation layer 10 by a vacuum evaporation method. Next, an image 3 is formed on the image receiving layer 4 of the transfer sheet 12 by using a thermal transfer ribbon, and further, on the base material 2 on which the first information pattern portion 14 containing the infrared-emitting fluorescent agent is formed in the same manner as in Example 1. Each layer except the heat-resistant base sheet 7 is transferred and formed, and the image 3, the image receiving layer 4, the transparent thin film layer 9, the hologram forming layer 10 having a relief hologram pattern, and the peelable protective layer 6 as shown in FIG. The image display 11 having the above was manufactured. The thermal transfer ribbon used is the same as in the first embodiment.

When this image display 11 was irradiated with infrared laser light (about 850 nm), bright green (about 525 nm) light emission of the information pattern portion 13 could be visually observed.

Example 3 [Transfer Sheet] As shown in FIG. 8, an ultraviolet light emitting fluorescent layer composition having the following composition was provided between the image receiving layer 4 and the peelable protective layer 5 of the transfer sheet 20 by a gravure method. This is the same as Example 1 except that the second information pattern portion 15 was formed at a drying temperature of 110 ° C. and a thickness of 1.0 μm at a drying temperature of 110 ° C. ○ Composition of ultraviolet light emitting fluorescent layer 30 parts of acrylic resin 12 parts of ultraviolet light emitting fluorescent agent (Sr ₃ (PO ₄ ) ₃ Cl: Eu) 50 parts of methyl ethyl ketone 50 parts of toluene

The transfer sheet 20 and the thermal transfer ribbon were set in the transfer device shown in FIG. 31, and an image 3 was formed on the image receiving layer 4 in the same manner as in Example 1. Information pattern portion 14 containing an agent
Each layer except the heat-resistant base sheet 7 is transferred and formed on the base material 2 on which the first information pattern portion 14 containing the infrared-emitting fluorescent agent is formed as shown in FIG. An image display 21 having an image 3, an image receiving layer 4, a second information pattern portion 15 containing an ultraviolet light emitting fluorescent agent, and a peelable protective layer 5 was manufactured. The thermal transfer ribbon used is the same as in the first embodiment.

When this image display 21 was irradiated with infrared laser light (about 850 nm), the first information pattern 1
4 (green) (approximately 525 nm), and when a black lamp (approximately 365 nm) was irradiated, the second information pattern 15 was blue (approximately 460 nm).
nm) bright luminescence could be visually observed.

<Embodiment 4> [Transfer sheet] As shown in FIG. 19, the transfer sheet 30 is provided between the hologram forming layer 10 and the peelable protective layer 5 according to the third embodiment.
An ultraviolet light-emitting fluorescent layer composition having the same composition as that described above was applied by a gravure method, and dried at a temperature of 110 ° C and a thickness of 1.0 µm.
The second embodiment is the same as the first embodiment except that the second information pattern portion 15 is formed in m.

The transfer sheet 30 and the thermal transfer ribbon were set in the transfer device shown in FIG. 31, and an image 3 was formed on the image receiving layer 4 in the same manner as in the first embodiment. Information pattern portion 30 containing an agent
Each layer except for the heat-resistant base sheet 7 is transferred and formed on the base material 2 on which the first information pattern portion 14 containing the infrared-emitting fluorescent agent is formed as shown in FIG. An image display 31 having an image 3, an image receiving layer 4, a transparent thin film layer 9, a hologram forming layer 10, a second information pattern portion 15 containing an ultraviolet light-emitting fluorescent agent, and a peelable protective layer 6 was produced. In addition, regarding the thermal transfer ribbon used,
This is similar to the first embodiment.

When this image display 31 was irradiated with infrared laser light (about 850 nm), the first information pattern 1
4 (green) (approximately 525 nm), and when a black lamp (approximately 365 nm) was irradiated, the second information pattern 15 was blue (approximately 460 nm).
nm) bright luminescence could be visually observed.

<Example 5> [Substrate] An infrared-emitting fluorescent layer composition having the following composition was used as the infrared-emitting fluorescent layer constituting the first information pattern portion 14 provided on the substrate 2 made of polyvinyl chloride. Is applied by a gravure method at a drying temperature of 110 ° C. and a thickness of 2.0
It was formed to a thickness of μm. ○ Infrared emitting fluorescent layer composition Acrylic resin 30 parts Infrared emitting fluorescent agent (YF ₃ : Yb + Tm) 12 parts Methyl ethyl ketone 50 parts Toluene 50 parts [Transfer sheet] As shown in FIG. A short wavelength ultraviolet light emitting fluorescent layer composition having the following composition is applied between the protective layer 5 and the protective layer 5 by the gravure method, and the information pattern portion 16b is formed at a drying temperature of 110 ° C. to a thickness of 1.0 μm and further transmitted. Thin film layer 9
A long-wavelength ultraviolet light-emitting fluorescent layer composition having the following composition was applied between the hologram-forming layer 10 and the hologram forming layer 10 by a gravure method, and the information pattern portion 16a was formed at a drying temperature of 110 ° C. and a thickness of 1.0 μm. Is the same as in the first embodiment. ○ Short wavelength ultraviolet light emitting fluorescent layer composition acrylic resin 30 parts Short wavelength ultraviolet light emitting fluorescent agent (Y ₂ O ₃ : Eu) 12 parts Methyl ethyl ketone 50 parts Toluene 50 parts ○ Long wavelength ultraviolet light emitting fluorescent layer composition acrylic resin 30 parts Long wavelength Ultraviolet light-emitting fluorescent agent (Zn ₂ GeO ₄ : Mn) 12 parts Methyl ethyl ketone 50 parts Toluene 50 parts

The transfer sheet 30 and the thermal transfer ribbon are set in the transfer device shown in FIG. 31, an image 3 is formed on the image receiving layer 4 in the same manner as in Example 1, and the infrared light-emitting fluorescent agent is contained. Each layer excluding the heat-resistant base sheet 7 is transferred and formed on the base material 2 on which the first information pattern portion 14 is formed, and the first information pattern portion 14 containing the infrared-emitting fluorescent agent is formed as shown in FIG. Formed base material 2, image 3, image receiving layer 4, information pattern portion 16a containing long wavelength ultraviolet light emitting fluorescent agent, transparent thin film layer 9, hologram forming layer 10, information pattern containing short wavelength ultraviolet light emitting fluorescent agent The image display 31 having the portion 16b and the peelable protective layer 5 was manufactured. Here, the first information pattern section 14, the information pattern section 16a, and the information pattern section 16b are respectively shown in FIG.
(A) to (c) are formed, and these are irradiated with reproduction light at the same time. As shown in FIG.
Can also be played. Further, the information pattern section 16a and the information pattern section 16b can be formed at positions as shown in the image display bodies of FIGS. 11 to 18 (or the transfer sheets of FIGS. 20 to 27). The thermal transfer ribbon used is the same as in the first embodiment.

When this image display 31 was irradiated with infrared laser light (about 850 nm), the first information pattern 1
4 (about 450 nm), and then irradiating with black lamp light (about 365 nm), the green (about 534n) of the information pattern 16a was obtained.
m), the bright light emission of the information pattern 16b could be visually observed by irradiation with an insecticidal lamp light (about 254 nm). In particular, when these three light sources are simultaneously irradiated, a color image can be reproduced in three primary colors of red, blue and green.

[0100]

According to the image display of the present invention, since the information pattern portion containing the infrared fluorescent agent that emits infrared light is formed on the base material, the ultraviolet absorber is used to promote the image. Irrespective of the presence of a layer containing, the contents of information patterns such as characters, marks, and pictures can be recognized from the fluorescence emission of the information pattern portion by irradiating infrared rays. That is, it is possible to easily determine the authenticity of the image display body and verify an illegal act such as falsification or tampering.

Further, by forming an information pattern portion containing an ultraviolet fluorescent light-emitting agent which emits light by ultraviolet light in one of layers between a layer containing an ultraviolet absorbent and a layer located outside thereof, Without being affected by the layer containing the absorbent, the contents of the information pattern such as characters, marks, and pictures can be easily recognized from the fluorescent light emission of the information pattern portion by irradiating ultraviolet rays, and further, the infrared light is emitted on the base material. The content of the information pattern such as characters, marks, and pictures can be easily recognized from the fluorescence emission of the information pattern portion containing the infrared fluorescent light emitting agent. That is, since two types of light sources, ultraviolet light and infrared light, can be used, it is possible to reliably determine the authenticity of the image display body and to verify illegal acts such as falsification and tampering.

Further, by combining a plurality of information pattern portions made of an ultraviolet fluorescent agent emitting at different wavelengths and an information pattern portion containing an infrared fluorescent agent, it is possible to judge the authenticity of an image display, alteration / falsification, etc. Can be more reliably verified.

Further, by forming a plurality of information pattern portions made of an ultraviolet fluorescent luminescent agent which emits each of red (R), green (G) and blue (B) colors corresponding to the three primary colors of light in the visible light range. Color image information can be formed, and a color image can be reproduced by simultaneously irradiating light from three light sources having wavelengths corresponding to fluorescence emission. The accuracy of authenticity determination by visually confirming such images is extremely high, and fraudulent acts can be easily found,
Improves fraud prevention.

By laminating the hologram forming layer on the image display, complete dead copy is difficult and the decorativeness can be improved.

In the image display of the present invention, since the transfer sheet and / or the base material is provided with an information pattern portion having the above-described optical characteristics in advance, a visible image can be formed on the image receiving layer of the transfer sheet. The transfer after the formation allows reliable and simple production.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of an image display according to a first invention of the present invention.

FIG. 2A is an explanatory diagram schematically illustrating an information pattern portion of the image display according to the present invention, and FIG. 2B is an explanatory diagram schematically illustrating a state in which the information pattern portion is colored with fluorescent light. .

FIG. 3 is a schematic sectional view of a substrate.

FIG. 4 is a schematic sectional view of a transfer sheet for forming the image display of the first invention of the present invention.

FIG. 5 is a schematic sectional view of an image display according to the second invention of the present invention.

FIG. 6 is a schematic sectional view of a transfer sheet for forming an image display according to the second invention of the present invention.

FIG. 7 is a schematic sectional view of an image display according to a third invention of the present invention.

FIG. 8 is a schematic sectional view of a transfer sheet for forming an image display of the third invention of the present invention.

FIG. 9 is a schematic sectional view of an image display according to a fourth invention of the present invention.

FIG. 10 is a schematic sectional view showing a specific example of the image display according to the fourth invention of the present invention.

FIG. 11 is a schematic sectional view showing a specific example of the image display according to the fourth invention of the present invention.

FIG. 12 is a schematic sectional view showing a specific example of an image display according to the fourth invention of the present invention.

FIG. 13 is a schematic sectional view showing a specific example of the image display according to the fourth invention of the present invention.

FIG. 14 is a schematic sectional view showing a specific example of the image display according to the fourth invention of the present invention.

FIG. 15 is a schematic sectional view showing a specific example of the image display according to the fourth invention of the present invention.

FIG. 16 is a schematic sectional view showing a specific example of an image display according to the fourth invention of the present invention.

FIG. 17 is a schematic sectional view showing a specific example of the image display according to the fourth invention of the present invention.

FIG. 18 is a schematic sectional view showing a specific example of the image display according to the fourth invention of the present invention.

FIG. 19 is a schematic sectional view of each transfer sheet used for manufacturing the image display of FIG.

20 is a schematic cross-sectional view of each transfer sheet used for manufacturing the image display of FIG.

21 is a schematic cross-sectional view of each transfer sheet used for manufacturing the image display of FIG.

FIG. 22 is a schematic sectional view of each transfer sheet used for manufacturing the image display of FIG.

FIG. 23 is a schematic sectional view of each transfer sheet used for manufacturing the image display of FIG.

FIG. 24 is a schematic sectional view of each transfer sheet used for producing the image display of FIG.

FIG. 25 is a schematic sectional view of each transfer sheet used for manufacturing the image display of FIG.

26 is a schematic cross-sectional view of each transfer sheet used for manufacturing the image display of FIG.

FIG. 27 is a schematic sectional view of each transfer sheet used for manufacturing the image display of FIG.

FIGS. 28A to 28C are schematic explanatory diagrams of an information pattern portion that emits fluorescent light at a specific wavelength.

FIG. 29 is a schematic explanatory view showing an example in which an information pattern of a specific shape is configured by combining a plurality of information pattern parts shown in FIGS. 28 (a) to (c).

FIGS. 30A to 30D are conceptual diagrams illustrating a process of manufacturing an image display using a transfer sheet.

FIG. 31 is an explanatory view showing a step of manufacturing an image display using a transfer sheet.

FIGS. 32A and 32B are plan views showing the appearance of the image display of the present invention.

33 (A) and (B) are plan views showing the appearance of a conventional image display.

[Description of Signs] 1, 11, 21, 31 Image display body 2 Base material 3 Image 4 Image receiving layer 5 Removable protective layer 6, 12, 20, 30 Transfer sheet 7 Heat resistant base sheet 8 Hologram layer 9 Transparent thin film layer Reference Signs List 10 hologram forming layer 13 information pattern portion 14 first information pattern portion 15 second information pattern portion 16a information pattern portion containing long-wavelength ultraviolet light emitting fluorescent material 16b information pattern portion containing short-wavelength ultraviolet light emitting fluorescent agent 17 infrared light Information pattern portion containing luminescent fluorescent agent h Drum i Thermal head j Sublimation transfer device k Transfer ribbon A Information pattern B Hologram image

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Naoaki Shindo 1-5-1, Taito, Taito-ku, Tokyo Letterpress Printing Co., Ltd.

Claims (10)

[Claims] 1. An image display comprising an image receiving layer on which an image is recorded on at least a part or the entire surface of a base material and a protective layer sequentially laminated thereon, the infrared light emitting fluorescent material emitting infrared light on the base material. An image display comprising an information pattern portion containing an agent. 2. An image display comprising an image receiving layer, a hologram layer, and a protective layer, which are recorded on at least a part or the entire surface of a substrate, in order to emit infrared light on the substrate. An image display, comprising an information pattern portion containing a fluorescent agent. 3. An image display comprising an image receiving layer on which an image is recorded on at least a part or the entire surface of a base material and a protective layer sequentially laminated, wherein the base material is an infrared-emitting fluorescent agent emitting light by infrared rays. Wherein a second information pattern portion containing an ultraviolet light-emitting fluorescent agent is formed between the image receiving layer and the protective layer. Display body. 4. An image display comprising an image receiving layer, a hologram layer, and a protective layer, which are recorded on at least a part or the entire surface of a base material, wherein infrared light is emitted on the base material by infrared light. A first information pattern portion containing a fluorescent agent, and a second information pattern portion containing an ultraviolet light emitting fluorescent agent in any one or more of the layers between the image receiving layer and the protective layer. An image display, characterized by being formed. 5. The image display according to claim 1, wherein said image receiving layer contains an ultraviolet absorber. 6. The hologram layer according to claim 1, wherein the hologram layer is a hologram formation layer having fine irregularities, and a transparent thin film layer which is in contact with a relief surface of the hologram formation layer and has a higher refractive index than the hologram formation layer. The image display according to claim 2. 7. The image display according to claim 2, wherein the hologram layer is a Lippmann hologram layer. 8. An information pattern having a specific shape is formed by a combination of a plurality of information pattern portions each including the infrared light emitting fluorescent agent and the ultraviolet light emitting fluorescent agent, and the same or the same light emission wavelength region light is applied to each of the information patterns. The image display according to claim 3, wherein light is emitted at wavelengths in different visible light regions. 9. The ultraviolet light emitting fluorescent agent includes a short wavelength ultraviolet light emitting fluorescent agent which emits light with short wavelength ultraviolet light (about 200 to 300 nm) and a long wavelength ultraviolet light emitting fluorescent agent which emits light with long wavelength ultraviolet light (about 300 to 400 nm). 9. The image display according to claim 8, wherein the image display emits light at both wavelengths. 10. The main fluorescent emission wavelength of each of the infrared light emitting fluorescent agent, the short wavelength ultraviolet light emitting fluorescent agent and the long wavelength ultraviolet light emitting fluorescent agent is red (R: about 640 to 780).
nm), green (G: about 492 to 550 nm), and blue (B: about 430 to 492 nm).
The image display according to the above.