JP2000293106A - Image display material and sticker adequate for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to use an image forming material for an employment visa, etc., to be attached to a passport and to effectively prevent alternation and forgery by providing the surface of a printing pattern with an image forming body formed with images including at least either of image information, such as a face photograph, or character information. SOLUTION: The sticker is formed by forming an image forming part 4 on a base 1, which is provided with an IR absorption ink printing layer 2 and is further provided with a resin layer 3 thereon and is provided with an image receiving layer 5 on a transparent film 6 from above the same, then thermally compression bonding the laminate onto the resin layer 3. The surface of the sticker is provided with the printing pattern layer 2 consisting of an IR absorption material and is provided with the image forming body 4 thereon in the manner described above, by which the easy judgment of the presence or absence of the printing pattern by the IR absorption ink is made possible by reading the printing pattern by using an IR reader even if the separately forged sticker is restuck. The authenticity discrimination of the used sticker is thus made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with an infrared absorption pattern such as a bar code pattern or a secret information pattern which can be read by a machine using an infrared reader, and is used by being attached to an identification card such as a passport. The present invention relates to an image display material that has personal information such as a face photograph and can effectively prevent the information from being falsified or altered.

[0002]

2. Description of the Related Art Conventionally, identification cards such as passports and driver's licenses have been provided with a face photograph column and a signature column for identifying whether or not the owner is the owner. There have been many incidents of falsifying, falsifying and misusing such information.

For this reason, a sheet called a transparent hologram (for example, Japanese Unexamined Patent Publication No.
JP-A-254975) and a method of preventing the falsification and alteration by adopting a configuration for recognizing a hologram image together with a face photograph, a sign, and the like, and a transparent label provided with a printing pattern using an infrared absorbing ink (for example, ,
JP-A-6-138826) has been devised, for example, on the above-mentioned face photograph column or signature column.

In recent years, digital images have also been adopted in passports and the like, and an image is formed on a transfer foil having an OVD layer using a printer or the like, and then transferred onto a data page of the passport. Methods (for example, see JP-A-6-024122, JP-A-6-072018, and Japanese Patent Application No. 8-221301) have been proposed.

[0005] However, these methods are for identifying whether the owner of the so-called passport is the person himself or herself. For example, a certificate used by attaching to the passport body such as a long-term work visa is not available. However, it cannot be said that sufficient measures have been taken to prevent tampering and alteration.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to be used for a work visa attached to a passport. An object of the present invention is to provide a sticker that has personal information such as a face photograph and can effectively prevent tampering or alteration.

[0007]

According to the present invention, in order to attain the above object, a printing pattern made of an infrared absorbing material is provided on a support of a sticker, and an image forming body is provided thereon, so that the image is falsified or altered. Can be obtained with a high effect of preventing the sticker.

[0008] That is, the invention according to claim 1 is characterized in that an adhesive layer is provided on one surface of a support, and an infrared ray using at least an infrared absorbing material and a resin is provided on the opposite surface of the support. An image forming body on which an image including at least one of image information such as a face photograph or character information is provided on the surface of the sticker provided with the printing pattern using the absorbing ink. An image display material characterized by the following.

According to a second aspect of the present invention, there is provided the sticker image display material according to the first aspect, wherein the sticker is provided on the sticker. A resin layer is provided on any one of the resin layers, and the image forming body is provided thereon.

According to a third aspect of the present invention, there is provided the image display material according to the first or second aspect, wherein the infrared absorbing material contains at least either Fe ²⁺ or Cu ^2+. 2. The method according to claim 1, wherein the material is made of a glass-based powder material.

According to a fourth aspect of the present invention, there is provided the image display material according to any one of the first and second aspects, wherein the infrared absorbing material contains at least either Fe ²⁺ or Cu ^2+. And a phosphate-based white crystal powder material containing phosphorus pentoxide as a main component.

According to a fifth aspect of the present invention, there is provided the image display material according to any one of the first to fourth aspects, and in particular, the image forming body is made of at least an image receiving layer, and image information such as a face photograph is obtained. The surface of the image receiving layer on which the image including at least one of the character information is formed is opposed to the surface on the side where the printing pattern using the infrared absorbing ink on the sticker is located. It is characterized by being bonded by hot pressure or an adhesive.

According to a sixth aspect of the present invention, there is provided an image display material according to any one of the first to fourth aspects, wherein the image forming body has at least an image receiving layer provided on a transparent substrate. An image including at least one of image information such as a face photograph or character information is formed on the image receiving layer on the surface on the side where the printing pattern using the infrared absorbing ink on the sticker is located. The image receiving body is characterized in that the sides of the image receiving layer of the image forming body are opposed to each other, and the transparent substrate is adhered to the transparent substrate by hot pressing or an adhesive.

According to a seventh aspect of the present invention, there is provided the image display material according to any one of the first to sixth aspects, and in particular, the image forming body is made of at least an OVD layer and an image receiving layer, The surface of the image receiving layer on which the image including at least one of the image information and the character information is formed faces the side of the image on the side where the printing pattern using the infrared absorbing ink on the sticker is located. The OVD layer is provided on the surface opposite to the position where the image is located with the image receiving layer interposed therebetween.

[0015] The invention according to claim 8 is directed to an infrared absorbing device using a support, in which an adhesive layer is provided on one side of the support, and at least an infrared absorbing material and a resin are provided on the opposite side of the support. A sticker characterized by being provided with a printing pattern using ink.

The stickers according to claims 1 to 8 preferably have a release sheet on the adhesive layer, which can be easily peeled off from the adhesive layer. If you have a release sheet,
In general, when the stickers are stored, transported, or handled, such as when the image forming body is provided on the stickers, the stickers are convenient because they do not stick to each other or unnecessary objects. However, the release sheet is not absolutely necessary. For example, if the pressure-sensitive adhesive layer does not exert sufficient pressure or heat to exhibit sufficient adhesiveness, the release sheet is not necessarily required.

<Operation> According to the image display material or the sticker of the first, second or eighth aspect of the present invention, by providing a printing pattern using an infrared absorbing ink on a support constituting the sticker, if the sticker is used as a passport or the like. Even when peeled off and re-attached a separately forged sticker, by reading the forged sticker with an infrared reader, it is possible to easily determine the presence or absence of a printing pattern with infrared absorbing ink, It is possible to judge whether the sticker is true or false.

[0018] In particular, according to the image display material of the present invention, it is possible to prevent the printing pattern of the infrared absorbing ink provided on the support constituting the sticker from being visually observed due to a change in surface gloss or fine irregularities. At the same time
This is preferable because it has the advantages of improving the adhesion between the support constituting the sticker and the image forming body and making it more difficult to tamper with the image provided on the sticker.

Further, according to the image display material of the present invention, an image forming body provided by heat or pressure on a support constituting a sticker is formed by a transfer foil system comprising at least an image receiving layer. Therefore, it is practically difficult to separate the image forming body from the sticker support, so that it becomes extremely difficult to falsify the image information without deteriorating the overall appearance.

According to the image display material of the present invention, an image forming body provided by a hot-press or an adhesive on a support constituting a sticker has at least an image receiving layer provided on a transparent base material. Therefore, the transparent base material comes out on the outermost surface of the obtained image display material. Therefore, the invention of claim 6 is an extremely useful configuration in terms of durability such as abrasion resistance and plasticizer resistance. By applying the invention to applications where durability is mainly required, high durability can be obtained. It is preferable because it is effective in giving.

Further, the use of an infrared-absorbing material suppresses the visibility of the printed pattern in the visible region as much as possible by using the infrared-absorbing material, and the infrared-ray-reading device can hardly be confirmed by silent gaze. Since it becomes readable only when the user touches, it is possible to provide a sticker with high anti-counterfeiting properties.

Further, according to the invention described in claim 7, O
By providing the VD layer, if only the image forming body is removed from the sticker of the present invention and a new image is to be formed, it becomes extremely difficult to realize it. An extremely high image display material can be provided.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 shows that an infrared absorbing ink printing layer (2) is provided on a support (1), a resin layer (3) is further provided thereon, and an image receiving layer (5) is formed on a transparent film (6) from above. 2 is a cross-sectional view of an image formed by forming an image (4) on the resin layer (3) and then thermocompression-bonded on the resin layer (3).

Support (1) that can be used in the present invention
For example, those commonly used in this technical field can be used. Specifically, plastic films such as polyethylene terephthalate, polyethylene naphthalate, polypropylene, cellophane, polycarbonate, polyvinyl chloride, polystyrene, polyimide, nylon, polyvinylidene chloride, etc. And further, synthetic paper, etc., but are not particularly limited thereto.

As the infrared-absorbing ink layer (2), any layer can be used as long as it has an absorption in the infrared region. However, it is preferable to use an infrared-absorbing glass or a glass having little absorption in the visible region. Glass materials such as phosphate glass and sulfate glass obtained by pulverizing and pigmenting heat ray absorbing glass can be exemplified. The invention according to claim 3 is used as an infrared absorbing material. A glass-based powder material containing either Fe ²⁺ or Cu ²⁺ is applied.

More specifically, this glass-based powder material is a powder material containing phosphorus pentoxide (P ₂ O ₅ ) as a main component and containing iron oxide and / or copper oxide in an amount of 1.0% by weight or more. Preferably 35-80% by weight phosphorus pentoxide,
Glass powder materials each containing iron oxide and copper oxide in an amount of 0 to 3.0% by weight.

The above-mentioned glass-based powder material may contain the following compounds as required. That, Al ₂ O ₃ ... 2.0~10.0 wt% B ₂ O ₃ ... 1.0~30.0 wt% MgO ... 3.0 to 10.0 wt% ZnO ... 0 to 3.0 wt% K ₂ O: 0 to 15% by weight BaO: 0 to 10.0% by weight & SrO: 0 to 1.0% by weight Ni, Co, Se: Trace amount

Further, the above-mentioned powdered glass-based material has a lower absorption in the visible region and an excellent infrared-absorbing ability, such as phosphate-based white crystal powder and sulfate-based white crystal powder. Can also be used as the infrared absorbing material according to the present invention. That is, claim 4
The infrared-absorbing substance described in the above is equivalent to the white crystal powder, and contains at least either Fe ²⁺ or Cu ²⁺ , and a phosphate-based white crystal powder containing phosphorus pentoxide as a main component. It is made of material.

These white crystalline substances having infrared absorbing ability are crystalline powders containing at least 20% by weight of either Fe ²⁺ or Cu ²⁺ and containing phosphorus pentoxide (P ₂ O ₅ ) as a main component. Particularly preferably, a crystalline powder containing 40 to 70% by weight of the above phosphorus pentoxide and 30 to 70% by weight of at least one of Fe ^{2+ and} Cu ²⁺ is desirable. The phosphate-based white crystal powder is obtained by melting and crystallizing a phosphate-based composition having the above-described composition to obtain a phosphate-based white crystal and powdering the same. is there.

Incidentally, this phosphate-based white crystal powder may also contain the following compounds as required. Al ₂ O ₃ ... 2.0~10.0 wt% B ₂ O ₃ ... 1.0~30.0 wt% MgO ... 3.0 to 10.0 wt% ZnO ... 0 to 3.0 wt% K ₂ O: 0 to 15.0% by weight BaO: 0 to 10.0% by weight & SrO: 0 to 1.0% by weight Ni, Co, Se: Trace amount

Further, in addition to the glass-based powder material and the white crystalline powder material having little absorption in the visible region as described above, an infrared absorbing material having absorption in the visible region can be applied. That is, infrared absorbing dyes such as cyanine-based, phthalocyanine-based, dithiol metal complex-based, naphthoquinone-based, anthraquinone-based, triphenylmethane-based, aminium-based, and diimmonium-based dyes having an infrared absorbing property can be used.

Examples of the binder resin contained in the infrared absorbing ink layer (2) include polyamide resin, petroleum resin, ethylene-vinyl acetate copolymer, polyethylene resin, polypropylene resin, polystyrene resin, polyester resin, and vinyl chloride-acetic acid. Vinyl copolymer, polyvinyl alcohol, polycarbonate resin, polyvinyl butyral resin, polyvinyl acetal resin, acrylates such as methyl acrylate, ethyl acrylate, butyl acrylate and methacrylates such as acrylic acid, methyl methacrylate, ethyl methacrylate, butyl methacrylate And methacrylic acid, maleic acid and maleic esters, maleic anhydride, acrylonitrile, epoxy resin, polystyrene resin and the like. These may be used either individually or in combination of two or more resins arbitrarily.

The infrared absorbing ink thus obtained can be formed by using a known printing method, for example, a printing method such as screen printing, flexographic printing, gravure printing, offset printing, or a coating method. An infrared-absorbing ink pattern layer may be provided by a transfer method using a transfer foil formed by coating these inks on a thin substrate.

The resin layer (3) shown in FIGS. 1 and 2
Is intended to improve the adhesion between the support (1) and the image receiving layer (5) having the image forming portion (4), and can be removed as needed. Any resin such as urethane resin, acrylic resin, polyester resin, vinyl chloride-vinyl acetate copolymer, epoxy resin, butyral resin can be used, and if necessary, a curing agent may be added to these resins. A resin which has been added and subjected to heat curing or the like may be used.

The structure of the image forming body having the image forming part (4) is such that an image receiving layer (5) is provided on a transparent support (6).
Or a transfer foil structure in which a release protective layer (9) and an image receiving layer (5) are sequentially laminated on a base material, and in this case, the image receiving layer (5) OV may be applied to any layer between the support (6) and the release protective layer (9).
A D layer (8) can be provided.

Here, the OVD (Opti) referred to in the OVD layer is used.
The term “cal Variable Dev-ice” is a general term for technologies that optically express images, such as hologram images and diffraction grating images that can express stereoscopic images and special decorative images using light interference. is there. A hologram image by two-beam interference using these lasers, or ultra-precision cutting, EB drawing, photo etching,
Or a diffraction grating image that makes full use of other molding techniques,
It is possible to use a relief type or a Lippmann type by a well-known method of duplicating a minute concavo-convex pattern on a nickel press plate to prepare a plate and then heating and pressing the relief formation layer. Here, when a relief type is used, it is desirable to provide a transparent substance having a different refractive index from that of the relief forming layer as a reflective layer by a known thin film forming means such as a vacuum evaporation method.

Means for forming image information such as a face photograph and / or character information on the image-formed body thus obtained include, for example, a printing method, a sublimation transfer method, a melt transfer method, and an electrostatic printing method. A known method such as an ink jet method or an ink jet method can be appropriately selected and used.

[0038]

Next, the present invention will be described more specifically with reference to examples. In the following, “parts” or “%” is based on weight unless otherwise specified.

First, an ink composition for a pigment transfer ribbon having the following composition was prepared. (Cyan ink) Phthalocyanine blue ... 5 parts Butyral resin (3000-1 manufactured by Sekisui Chemical Co., Ltd .: softening point about 70 ° C) ... 5 parts Methyl ethyl ketone ... 60 parts Toluene ... 28 parts

(Magenta ink) Carmine 6B 5 parts Butyral resin (3000-1 manufactured by Sekisui Chemical Co., Ltd .: softening point about 70 ° C.) 5 parts Methyl ethyl ketone 60 parts Toluene 28 parts

(Yellow Ink) Disazo Yellow: 5 parts Butyral resin (Sekisui Chemical Co., Ltd. 3000-1: softening point: about 70 ° C.): 5 parts Methyl ethyl ketone: 60 parts Toluene: 28 parts

Each of the pigment transfer ribbon inks obtained as described above was heat-treated on its back surface to a thickness of 5.4.
Each of the inks was applied by a gravure printing method on a polyethylene terephthalate film having a thickness of 0.5 μm so as to have a thickness of 0.5 μm when dried, and dried to prepare a pigment transfer ribbon.

<Example 1> (Image forming body) Urethane resin: 20 parts Butyral resin: 10 parts Methyl ethyl ketone: 60 parts Toluene: 60 parts

First, the ink for the image receiving layer prepared by preparing the ink composition for the image receiving layer with the above formulation was applied to a polyethylene terephthalate film having a thickness of 12 μm so as to have a dry film thickness of about 4 μm, and dried. An image formed body was obtained.

On the image receiving layer side of the above-mentioned image forming body, the pigment transfer ribbon prepared above was placed oppositely, and an image was formed using a thermal head.

(Sticker with infrared absorbing layer) Pigment (copper-containing phosphate-based white crystalline compound) 30 parts Vinyl chloride-vinyl acetate copolymer 10 parts Saturated polyester 5 parts Polyurethane elastomer 12 parts Methyl ethyl ketone 30 parts Toluene… 30 parts

An infrared absorbing ink was prepared by using the above method, a 5 μm-thick ink layer (2) was patterned on a high-quality paper by screen printing, and then an acrylic resin emulsion was used to form a 2 μm-thick ink layer. The resin layer (3) was formed. Thereafter, a pressure-sensitive adhesive comprising a polyacrylate was further applied to the back surface, and a release sheet was laminated thereon to produce a sticker.

The image receiving layer surface of the image forming body on which the image has been formed with the pigment transfer ribbon is provided so as to face the surface of the sticker on which the infrared absorbing pattern layer is present, and has a surface temperature of 100.
By thermocompression bonding with a hot roll heated to ℃
An image display material was prepared, and the surface was observed with an infrared camera. As a result, the pattern formed by the infrared absorbing ink could be clearly confirmed without being affected by the image formed by the pigment transfer ribbon.

Example 2 The following release layer ink and hologram formation layer ink were sequentially applied to a 25 μm polyester film and dried to obtain a release layer and a hologram formation layer, and then the hologram formation layer was formed by hot embossing. A hologram was formed on the surface of the substrate by using an uneven shape.

(Ink for release layer) Acrylic resin ... 20 parts Methyl ethyl ketone ... 40 parts Toluene ... 40 parts (Ink for hologram forming layer) Vinyl chloride-vinyl acetate copolymer ... 20 parts Urethane resin ... 15 parts Methyl ethyl ketone ... 70 parts Toluene ... 30 copies

Further, ZnS was provided on the surface of the hologram forming layer by vapor deposition as a transparent thin film layer, and then the following ink for an image receiving layer was applied and dried to laminate the image receiving layers, thereby obtaining an image receiving sheet. (Ink for image receiving layer) Urethane resin ... 20 parts Butyral resin ... 10 parts Methyl ethyl ketone ... 60 parts Toluene ... 60 parts

The surface of the heat-sensitive transfer recording layer of the pigment transfer ribbon obtained above is superimposed on the image receiving sheet, and using a thermal head, cyan, magenta, and yellow images in area gradation corresponding to the heat generating portion of the thermal head are formed. As a result, a color image consisting only of the area gradation was formed on the image receiving sheet.

Next, pattern printing was attempted on coated paper using an infrared absorbing ink having the following composition, and a sticker was produced in the same manner as in <Example 1>. Pigment 2 (shown below) 40 parts Vinyl chloride-vinyl acetate copolymer 10 parts Saturated polyester 5 parts Polyurethane elastomer 12 parts Isocyanate curing agent 3 parts Triethylene diamine 0.5 part Toluene 30 parts Methyl ethyl ketone 30 parts Here, the composition of the pigment 2 is as follows. Al ₂ O ₃ ... 5.2 parts of P ₂ O ₅ ... 78.0 parts MgO ... 5.4 parts of BaO ... 9.0 parts of CuO ... 1.7 parts of SrO ... 0.05 parts

The image-formed body containing the OVD layer on which the image was formed was superimposed on the sheet for the final product, and thermal transfer was carried out with a heat roller from the back of the image-receiving layer, and only the polyester film was peeled off. Transcripts could be obtained. The obtained image information material had a hologram image as a security function, and also had a reading performance by an infrared sensor such as an infrared camera, and had high security.

The image information material on which an image has been formed has, as a security function, a reading performance of an infrared sensor such as an infrared camera. Further, by providing an OVD layer using a hologram or a diffraction grating, the security is further improved. High stickers were obtained.

[0056]

By using the sticker of the present invention, a sticker having an identification function, such as a face photograph field or a sign field, such as a work visa seal of a passport, is provided with an infrared absorption pattern which is almost invisible to the naked eye. It is possible to verify the identity of the individual by the face photograph etc. formed on the sticker, and at the same time, check the infrared absorbing ink layer provided on the sticker with the infrared sensor to confirm whether the sticker itself is genuine This has the effect that it can be easily determined whether or not it is true or false. Further, by forming various information with the infrared absorbing ink layer provided on the sticker, it became possible to carry a large amount of information without disturbing visual confirmation information such as a face photograph.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an outline of an embodiment relating to a thermal transfer recording medium of the present invention using a cross-sectional view of a sheet.

FIG. 2 is an explanatory view showing an outline of a thermal transfer recording medium according to an embodiment of the present invention using a cross-sectional view of a sheet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Support body 2 ... Infrared absorber layer 3 ... Resin layer 4 ... Image forming part 5 ... Image receiving layer 6 ... Film layer 7 ... Adhesive layer 8 ... OVD layer 9 ... Peeling protection layer

Claims (8)

[Claims] An adhesive layer is provided on one surface of a support, and a printed pattern using an infrared absorbing ink using at least an infrared absorbing material and a resin is formed on the opposite surface of the support. An image forming material on which an image including at least one of image information such as a face photograph or character information is formed on the printed pattern surface of the provided sticker, . 2. A resin layer is provided on the entire surface of the surface on which the printing pattern using the infrared absorbing ink on the sticker is located or on a part thereof, and the image forming body is provided thereon. The image display material according to claim 1, wherein: 3. The method according to claim 2, wherein the infrared absorbing material is at least Fe ^2+.
3. The image display material according to claim 1, wherein the image display material is made of a glass-based powder material containing any of Cu ²⁺ . 4. The method according to claim 1, wherein the infrared absorbing material comprises at least Fe ²⁺
3. A powder made of a phosphate-based white crystal powder containing either Cu ²⁺ or phosphorus pentoxide as a main component, and The image display material described in 1. 5. The image forming body is made of at least an image receiving layer, and a surface of the image receiving layer on which an image including at least one of image information or character information such as a face photograph is formed,
The printing pattern using the infrared absorbing ink on the sticker is opposed to the surface on the side where the printing pattern is located, and is adhered by hot pressure or an adhesive. Image display material. 6. The image forming body, wherein at least an image receiving layer is provided on a transparent substrate, and the image receiving body is provided on the surface of the sticker on which the printing pattern using infrared absorbing ink is provided. The side of the image receiving layer of the image forming body on which an image including at least one of image information or character information such as a face photograph is formed on the layer is opposed to each other, and the transparent substrate is adhered to the layer by hot pressing or an adhesive. The image display material according to any one of claims 1 to 4, wherein: 7. The image forming body is made of at least an OVD layer and an image receiving layer, and is provided on an image receiving layer on which an image including at least one of image information such as a face photograph or character information is formed. Face
The printed pattern using the infrared absorbing ink on the sticker is opposed to the surface on the side where the printed pattern is located, and is bonded by hot pressure or an adhesive, and the OVD layer has the image with the image receiving layer therebetween. The image display material according to any one of claims 1 to 6, wherein the image display material is provided on a surface opposite to the position. 8. An adhesive layer is provided on one surface of the support,
A sticker, characterized in that a printed pattern using an infrared absorbing ink using at least an infrared absorbing substance and a resin is provided on a surface of the support opposite to the opposite side.