JP2002254545A - Sheet having high brightness pigment layer and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet having a high brightness pigment layer capable of developing a peculiar color phase not developed in a conventional sheet using high brightness pigment ink, not easily forged, not requiring a special genuineness judge device, adaptable to an inexpensive receipt, a form of securities or the like, an IC card, a magnetic card, a rewrite card or the like, simple in constitution and inexpensive and perfectly developing the original optical characteristics possessed by high brightness pigment. SOLUTION: The sheet having a high brightness pigment layer is constituted by forming a layer having high brightness pigment fixed thereto on the surface of a base material at a predetermined part through an adhesive layer. The high brightness pigment preferably comprises fine pieces of a hologram film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention can be suitably used for forms such as receipts and securities, IC cards, magnetic cards, rewritable cards, etc., and has excellent design.
The present invention relates to a sheet having high anti-counterfeiting properties and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, an ink containing a high-brightness pigment that reproduces various colors by using light interference, instead of a pigment such as a titanium-coated mica or a fine piece of a hologram film, is printed on a specific portion of a substrate. There are sheets that can be used for forms such as receipts and securities, IC cards, magnetic cards, and rewritable cards.

[0003] These are excellent in that they are not easily forged and do not require a special authentication device, but in order to make a high-brightness pigment into an ink, a high-brightness pigment is contained in a vehicle (binder component, fluidizing component, etc.). 20 to 30% by mass of bright pigment at most
Because of the fact that high-brightness pigments can be contained in the vehicle and that high-brightness pigments are dispersed in the vehicle, light interference is impeded by the large amount of vehicle that forms the matrix, and the original optical properties of high-brightness pigments are exhibited. There was no problem.

[0004]

SUMMARY OF THE INVENTION A first object of the present invention is to solve the conventional problems and to realize the original optical characteristics of high-luminance pigments such as titanium-coated mica and hologram film fine pieces. , A sheet that emits a unique hue not found in conventional sheets using high-brightness pigmented ink, has excellent design, is not easily forged, does not require a special authenticity determination device, and is inexpensive. A second object of the present invention is to provide a novel sheet applicable to forms such as securities, IC cards, magnetic cards, rewritable cards and the like, and a method for easily manufacturing such a novel sheet. It is to provide.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above problems, and as a result, provided an adhesive layer on a predetermined surface of a base material, and fixed a high-brightness pigment through the adhesive layer. It has been found that the above-mentioned problems can be solved by forming such a layer, and the present invention has been completed.

That is, a first aspect of the present invention has a high-luminance pigment layer characterized in that a layer on which a high-luminance pigment is fixed is formed at a predetermined portion of the substrate surface via an adhesive layer. It is a sheet.

According to a second aspect of the present invention, in the sheet having the high luminance pigment layer according to the first aspect, the high luminance pigment is a fine piece of a hologram film.

According to a third aspect of the present invention, in the sheet having the high brightness pigment layer according to the second aspect, the hologram film fine pieces are oriented and fixed so as to be substantially flat with respect to the substrate surface. It is characterized in that a layer is formed.

A fourth aspect of the present invention is characterized in that an adhesive layer is formed on a predetermined portion of the surface of the substrate, and a high-luminance pigment is applied thereon to form a layer on which the high-luminance pigment is fixed. This is a method for producing a sheet having a high brightness pigment layer.

According to a fifth aspect of the present invention, in the method for producing a sheet having a high-intensity pigment layer according to the fourth aspect, the high-intensity pigment is a fine piece of a hologram film.

According to a sixth aspect of the present invention, in the method for manufacturing a sheet having a high-brightness pigment layer according to the fifth aspect, the hologram film fine pieces are oriented so as to be substantially flat with respect to the substrate surface. It is characterized by.

The sheet having the high-brightness pigment layer of the present invention is provided with the high-brightness pigment fixed thereon without using the ink containing the high-brightness pigment through an adhesive layer formed on a predetermined portion of the substrate surface. As a result, the interference of light is not hindered by the vehicle for forming the ink, and the original optical characteristics of the high-brightness pigment are expressed 100%. As described above, since the sheet of the present invention expresses 100% of the original optical characteristics of the high-brightness pigment, it can emit a unique hue not available in the sheet using the conventional high-brightness pigment ink, and can be easily forged. It can be applied to inexpensive receipts, forms such as securities, IC cards, magnetic cards, rewritable cards, etc. without requiring a special authenticity determination device.

[0013]

FIG. 1 is a schematic sectional explanatory view of an embodiment of a sheet having a high-brightness pigment layer of the present invention.
FIG. 2 is a schematic cross-sectional explanatory view of another embodiment of the sheet having the high brightness pigment layer of the present invention.

As shown in FIG. 1, an adhesive layer 3 is formed on a predetermined portion of the surface of a substrate 2 of a sheet 1 having a high-luminance pigment layer of the present invention. A layer 5 having the pigment 4 fixed thereon is formed. High brightness pigment 4-
1 indicates a high-brightness pigment fixed on the surface of the adhesive layer 3,
The high-brightness pigment 4-2 is a high-brightness pigment in which a part thereof enters the adhesive layer 3 and the other part is fixed on the surface.

In the present invention, the ratio between the high-brightness pigment 4-1 and the high-brightness pigment 4-2 is not particularly limited. Or high brightness pigment 4-1
And the high-brightness pigment 4-2 can coexist at an arbitrary ratio. When the ratio of the high-brightness pigment 4-2 is increased, the fixing property is enhanced, and the high-brightness pigment does not fall off, so that a sheet having high stability and reliability can be obtained.

As shown in FIG. 2, the sheet 1 of the present invention
In A, an adhesive layer 3 is formed on a predetermined portion of the surface of the substrate 2, and a hologram film fine piece 4 A is formed on the adhesive layer 3.
The layer 5A is formed by orienting so as to be substantially flat with respect to the surface of the substrate 2 and fixed.

The substrate 2 on which gradation printing has been performed
When the high-brightness pigments 4 and 4A are fixed to a predetermined portion of the surface of the substrate through the adhesive layer 3 as described above, beautiful shine and iris can be seen, and a sheet excellent in design can be obtained.

To form the adhesive layer 3, the layer 3 can be formed by a known method using a known adhesive or pressure-sensitive adhesive. Then, the high-intensity pigments 4 and 4A are disposed thereon, and the high-intensity pigments 4 and 4A are fixed and applied to form the layer 5 and 5A on which the high-intensity pigments 4 and 4A are fixed, whereby the sheets 1 and 1A of the present invention can be manufactured. .

As a method for forming the adhesive layer 3, for example, a known adhesive or pressure-sensitive adhesive is used, and a commonly used method such as letterpress printing, intaglio printing such as gravure printing, flat printing such as offset printing, and screen printing is used. And a method of manually or automatically applying the ink using a roll, a spatula, a pad, or the like.

In another method of manufacturing the sheet 1 or 1A of the present invention, for example, the adhesive layer 3 is formed on a predetermined portion of the surface of the substrate 2 with a predetermined design using a tack paper or a double-sided tape. After the high-intensity pigment 4 or 4A is placed, placed, or scattered on the adhesive layer 3, a method of fixing and fixing by pressing, rubbing, or the like from above can be used.

The hologram film used in the present invention is, for example, formed in a polyethylene terephthalate film having a thickness of about 10 to 20 μm, which is transparent to visible light, by using a laser beam or the like to form the same groove as the visible light spectrum, thereby further increasing the reflectance. For this reason, the surface is subjected to aluminum evaporation.

In the present invention, a commercially available hologram foil or hologram film can be used. For example, a thermoplastic resin layer such as an acrylic lacquer is formed on the surface of a support film such as a polyester film, a hologram surface having irregularities of about 2500 ° is formed on the surface, and various metals are further vapor-deposited. is there. In addition, an ultraviolet (or electron beam) curable resin solution is applied to a part or the entire surface of the support film, a commercially available hologram film is pressed, irradiated with ultraviolet (or electron beam) and cured, and the commercially available hologram film is peeled off. A method of forming a hologram unevenness on the surface of an ultraviolet (or electron beam) curable resin layer (JP-A-5-232853), or a method in which a metal deposition layer is formed thereon Is also good. Further, those obtained by laminating a protective film on the surface of the various hologram films described above may be used.

In the present invention, it is preferable to use the hologram film as a fine piece. Such fine pieces are also commercially available [for example, Geometric Pigment, Silver 256 (length 100 μm) manufactured by Tomoe Kogyo KK)
× 100 μm × 12 μm in thickness), Geometric Pigment, Silver 500 (50 μm × 50 μm × 12 μm in thickness)].

In the present invention, even if the surface of the fine hologram film piece 4A faces the front side of the sheet 1,
The sheet 1 may face the opposite side to the front side or may be mixed at an arbitrary ratio. The hologram film fine piece 4A is
The method of orienting the substrate so that it is substantially flat with respect to the surface is not particularly limited.

Most of the hologram film fine pieces 4A are oriented so as to be almost flat with respect to the surface of the substrate 2.
As one method, for example, after hologram film fine pieces 4A are arranged, placed, and scattered on the adhesive layer 3,
When stretched or rubbed, leveled, pressed, or rubbed with a roll, rod (approximately 10 mm in diameter), spatula, cloth pad (approximately 100 mm in diameter), etc. from the top, most of the hologram film fine pieces 4A can be oriented and fixed so as to be substantially flat with respect to the surface of the substrate 2. Then dry if necessary,
The adhesive layer 3 is cured by irradiating ultraviolet rays.

In the present invention, the fact that most of the hologram film fine pieces 4A become substantially flat with respect to the surface of the substrate 2 means that about 50% or more, preferably about 60% of the total hologram film fine pieces 4A contained. Above, particularly preferably 70% or more of the hologram film fine pieces 4A
Means that the surface becomes almost flat.

As the substance forming the adhesive layer used in the present invention, known adhesives and pressure-sensitive adhesives can be used as described above, and natural or synthetic products may be used, and thermoplastic adhesives and pressure-sensitive adhesives may be used. A thermosetting adhesive or a pressure-sensitive adhesive, or an adhesive or a pressure-sensitive adhesive of a type curable by radiation such as ultraviolet rays or electron beams, or a mixture of two or more selected from these. Can be used. Adhesives and pressure-sensitive adhesives having transparency can be preferably used.

Specific examples of the substance forming the adhesive layer used in the present invention include thermoplastic elastomer, natural rubber, styrene / butadiene copolymer rubber, polyisobutylene, isobutylene polymer, isobutylene / isobrene copolymer (butyl rubber). ), Isoprene rubber, butadiene polymer, styrene / butadiene copolymer, styrene / isoprene, styrene / isoprene / styrene block polymer, styrene / butadiene / styrene block polymer, chloroprene rubber, butadiene / acrylonitrile copolymer rubber, butyl rubber, acrylic Polymers (polymethyl acrylate, polyethyl acrylate, polybutyl acrylate, polyoctyl acrylate), vinyl ether polymers (polyvinyl methyl ether, polyvinyl ethyl ether, poly Cycloalkenyl ether), polyvinyl alcohol, polyvinyl butyral, polyvinyl pyrrolidone, vinyl pyrrolidone / vinyl acetate copolymers, dimethylaminoethyl methacrylate, polyvinyl caprolactam, polyvinyl pyrrolidone and dimethylaminoethyl
Combination copolymer of methacrylic acid and polyvinyl caprolactam, maleic anhydride copolymer, silicone adhesive (polyvinyl siloxane), polyurethane, polyvinyl chloride, gelatin, shellac, gum arabic, rosin, rosin ester, ethyl cellulose, carboxymethyl cellulose, paraffin , Tristearin, polyvinyl alcohol, polyethylene, polypropylene, acrylic resin, vinyl resin, polyisobutene, polybutadiene, epoxy resin, phenol resin, polyurethane, polyester, polyamide, silicone, polystyrene,
One or more of melamine resins and the like may be used alone or as a mixture, or an emulsion thereof.

If necessary, a softener (liquid polybutene, mineral oil, liquid polyisobutylene, liquid polyacrylate), a tackifier (rosin and rosin derivative, polyterpene resin, terpene phenol resin) may be used for these adhesive substances. , Petroleum resin) may be added.

As the substance forming the adhesive layer used in the present invention, a known photopolymerizable monomer and / or a photopolymerizable oligomer, or a known photopolymerizable monomer and / or a photopolymerizable Adhesive substances arbitrarily selected and added from oligomers can be mentioned. Specific examples of such photopolymerizable monomers include, for example, unsaturated carboxylic acids such as acrylic acid and methacrylic acid or esters thereof, for example, alkyl-, cycloalkyl-, halogenated alkyl-, alkoxyalkyl-, hydroxyalkyl -, Aminoalkyl-, tetrahydrofurfuryl-, allyl-, glycidyl-, benzyl-, phenoxy-acrylate and methacrylate,
Alkylene glycol, polyoxyalkylene glycol mono- or diacrylate and methacrylate, trimethylolpropane triacrylate and methacrylate, pentaerythritol tetraacrylate and methacrylate, such as acrylamide, methacrylamide or derivatives thereof, for example, mono-substituted with an alkyl group or a hydroxyalkyl group Or allyl compounds such as disubstituted acrylamide and methacrylamide, diacetone acrylamide and methacrylamide, N, N'-alkylenebisacrylamide and methacrylamide, and maleic compounds such as allyl alcohol, allyl isocyanate, diallyl phthalate and triallyl isocyanurate. Acid, maleic anhydride, fumaric acid or its ester such as alkyl, halogenated alcohol Kill and mono- or dimaleate and fumarates alkoxyalkyl, other unsaturated compounds, such as styrene, vinyltoluene, divinylbenzene, N- vinylcarbazole, etc. N- vinylpyrrolidone is used.

In applications where curing shrinkage is an obstacle, for example, isobornyl acrylate or methacrylate, norbornyl acrylate or methacrylate, dicyclopentenoxyethyl acrylate or methacrylate, dicyclopentenoxypropyl acrylate or Such as methacrylate, acrylate or methacrylate of diethylene glycol dicyclopentenyl monoether, acrylate or methacrylate of polyoxyethylene or polypropylene glycol dicyclopentenyl monoether, such as dicyclopentenyl cinnamate, dicyclopentenoxy Ethyl cinnamate, dicyclopentenoxyethyl monofumarate or difumarate, such as 3,9-bis (1,1
-Bismethyl-2-oxyethyl) -spiro [5,5]
Undecane, 3,9-bis (1,1-bismethyl-2-
(Oxyethyl) -2,4,8,10-tetraoxaspiro [5,5] undecane, 3,9-bis (2-oxyethyl) -spiro [5,5] undecane, 3,9-bis (2-oxyethyl) Mono-, diacrylate or mono-, such as -2,4,8,10-tetraoxaspiro [5,5] undecane, dimethacrylate, or mono-, ethylene- or propylene oxide addition polymers of these spiroglycols; Diacrylate, or mono-, dimethacrylate, or methyl ether of the above-mentioned monoacrylate or methacrylate, 1-azabicyclo [2,2,2] -3-octenyl acrylate or methacrylate, bicyclo [2,2,1] -5 Dicyclopentane such as heptene-2,3-dicarboxyl monoallyl ester Enyl acrylate or methacrylate, it can be used a photopolymerizable monomer, such as dicyclopentadienyl oxyethyl acrylate or methacrylate, dihydrodicyclopentadienyl acrylate or methacrylate. These photopolymerizable monomers may be used alone or in combination of two or more.

Examples of the photopolymerizable oligomer include an acrylate of an epoxy resin, such as diglycidyl ether diacrylate of bisphenol A, a reaction product of an epoxy resin with acrylic acid and methyltetrahydrophthalic anhydride, and an epoxy resin with 2-hydroxy Epoxy resin prepolymers such as reaction products with ethyl acrylate, reaction products of diglycidyl ether of epoxy resin with diallylamine, ring-opening copolymers of glycidyl diacrylate with phthalic anhydride, and methacrylic acid dimers Unsaturated polyester prepolymers such as esters of phenols and polyols, polyesters obtained from acrylic acid, phthalic anhydride and propylene oxide, and reaction products of polyethylene glycol, maleic anhydride and glycidyl methacrylate A reaction product of polyvinyl alcohol and N-methylolacrylamide, a polyvinyl alcohol-based prepolymer such as one obtained by esterifying polyvinyl alcohol with succinic anhydride and then adding glycidyl methacrylate, and pyromellitic dianhydride. A polyamide prepolymer such as a prepolymer obtained by reacting a diallyl ester with p, p'-diaminodiphenyl, a reaction product of an ethylene-maleic anhydride copolymer with allylamine, methyl vinyl ether-maleic anhydride A reaction product of an acid copolymer and 2-hydroxyethyl acrylate, or a polyacrylic acid or maleic acid copolymer prepolymer such as a product obtained by further reacting glycidyl methacrylate; Linked alkylene segments, or saturated polyester segment or both, and the like urethane prepolymer having an acryloyl group or a methacryloyl group at both ends. These photopolymerizable oligomers suitably have a weight average molecular weight in the range of about 2,000 to 30,000.

As the photopolymerization initiator, conventionally known photopolymerization initiators may be used. For example, 1-hydroxy-cyclohexyl-phenyl-ketone, 2-hydroxy-2-methyl-1
-Phenyl-propan-1-one, 1- [4- (2-hydroxyethoxy) -phenyl] -2-hydroxy-methyl-1-propan-1-one, 2-methyl-1- [4
-(Methylthio) phenyl] -2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1
-(4-morpholinophenyl) -butanone-1-bis (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide-bis (2
4,6-trimethylbenzoyl) -phenylphosphine oxide. These photopolymerization initiators may be used alone or in combination of two or more. The content is usually preferably selected in the range of 1 to 15 parts by mass per 100 parts by mass of the photocurable component.

The base material used in the present invention includes fine paper, art paper, coated paper, mirror-coated paper, condenser paper,
In addition to paraffin paper and other papers, paper and films with overcoat layers (protective layers), sheets, sheets for cards, etc., as well as synthetic paper or polyethylene,
Synthetic films and sheets of polyethylene terephthalate, polypropylene, vinyl chloride and the like having transparency can also be used. When using such synthetic films or sheets, it is preferable to apply a surface treatment such as mat treatment or corona treatment to the surface of the substrate.

Since the present invention is not limited to the above embodiment, various modifications can be made without departing from the spirit of the present invention.

[0036]

The present invention will be described in more detail with reference to the following Examples and Comparative Examples, but the present invention is not limited to these Examples. (Example 1) An adhesive layer (coating thickness: 12 μm) coated on a surface of a substrate (plastic card) with a pad (about 100 mm in diameter) using a commercially available ultraviolet-curable ink (silver varnish, T & K TOKA). Was formed. On this adhesive layer, a hologram film fine piece [Geometric Pigment, Silver 256 (100 μm long) manufactured by Tomoe Kogyo Co., Ltd.]
m × width 100 μm × thickness 12 μm)], and after being spread with a pad (about 100 mm in diameter), most of the fine pieces 4 </ b> A are almost flat against the surface of the base material 2 as shown in FIG. 2. Then, the sheet was cured by irradiating ultraviolet rays to produce a sheet having a high-brightness pigment layer of the present invention. This sheet was visually evaluated for luminance and iris (color change when viewed at different angles). As a result of evaluation based on the following evaluation criteria, the luminance was 5 and the iris was 5.

Luminance evaluation criterion: 5: Brightly shines. 4: Bright for the time being. 3: Not very bright. 1: No shine.

Iris evaluation criteria: 5: Strong iris is observed. 4: An iris is seen temporarily. 1: There is not much iris.

(Example 2) A sheet having a high-brightness pigment layer of the present invention was prepared in the same manner as in Example 1 except that the pad was not used, and the luminance and iris were visually evaluated. As a result of evaluation according to the following evaluation criteria, the luminance was 5 and the iris was 4.

Example 3 The same method as in Example 1 was repeated except that titanium coating mica [Iriodin 120 (particle size: 5 to 25 μm), manufactured by Merck Japan Ltd.] was used instead of the fine hologram film. A sheet having a luminance pigment layer was prepared, and the luminance and the iris were visually evaluated.

(Comparative Example 1) A hologram film fine piece [Geometric Pigment, Silver 256 (100 μm in length × 10 in width) manufactured by Tomoe Kogyo Co., Ltd.
0 μm × thickness 12 μm)] to obtain a comparative ink. This ink is applied to the surface of a base material (plastic base material for cards, paper base material such as coated paper, high-quality paper, etc.) (coating thickness: 30 μm), then irradiated with ultraviolet light, cured and dried, and compared. I made a sheet. The luminance and the iris were visually evaluated in the same manner as in Example 1, and as a result, the luminance and the iris were 3 and 1, respectively.

Comparative Example 2 100 parts by mass of a commercially available ultraviolet curable ink (Silver Varnish, T & K TOKA) contains 5 parts by mass of titanium coating mica [Iriodin 120 (particle size: 5 to 25 μm) manufactured by Merck Japan Ltd.]
A comparative ink was prepared by mixing. This ink is applied to the surface of a base material (plastic base material for cards, paper base material such as coated paper, high-quality paper, etc.) (coating thickness: 30 μm), then irradiated with ultraviolet light, cured and dried, and compared. I made a sheet. The luminance and the iris were visually evaluated in the same manner as in Example 1, and as a result, the luminance and the iris were 3 and 1, respectively.

(Comparative Example 3) Titanium coated mica 2
A sheet for comparison was prepared in the same manner as in Comparative Example 1 except that the coating thickness was 50 μm and the mass was 0 part by mass, and the luminance and iris were visually evaluated.

Comparative Example 4 Titanium coating mica [Iriodin 120 (particle size: 5 to 2) manufactured by Merck Japan Co., Ltd.]
5 μm)] to obtain a comparative ink. This ink is applied to the surface of a base material (plastic base material for cards, paper base material such as coated paper, woodfree paper, etc.) (coating thickness: 150 μm), then irradiated with ultraviolet light, cured and dried for comparison. I made a sheet. And Example 1
The luminance and the iris were visually evaluated in the same manner as in the above.

(Comparative Example 5) 100 parts by mass of a commercially available ultraviolet curable ink (silver varnish, T & K TOKA) contains 20 parts by mass of titanium coating mica [Iriodin 249 (particle size: 10 to 125 μm) manufactured by Merck Japan Ltd.] A comparative ink was prepared by mixing. This ink is applied to the surface of a base material (plastic base material for cards, paper base material such as coated paper, high-quality paper, etc.) (coating thickness 50μ).
m) Then, the sheet was cured and dried by irradiating ultraviolet rays to produce a comparative sheet. The luminance and the iris were visually evaluated in the same manner as in Example 1. As a result, the luminance and the iris were 4 and 1, respectively.

[0046]

The sheet having a high-brightness pigment layer according to claim 1 of the present invention does not use an ink containing the high-brightness pigment, and the high-brightness pigment is applied to a predetermined portion of the substrate surface via an adhesive layer. Since the fixed layer is formed, light interference is not hindered by the vehicle for forming an ink, and a remarkable effect that 100% of the original optical properties of the high-brightness pigment are exhibited. . Further, since the original optical characteristics of the high-brightness pigment are expressed by 100%, a unique hue not available in a sheet using the conventional high-brightness pigment ink can be emitted, and it is not easily forged and special authenticity is obtained. Eliminates the need for a judgment device, inexpensive receipts, forms such as securities, I
It has a remarkable effect that it can be applied to C cards, magnetic cards, rewritable cards, and the like.

The sheet having the high brightness pigment layer according to the second aspect of the present invention has the same effect as the sheet according to the first aspect, since the high brightness pigment is a fine piece of the hologram film. Strong brightness and strong iris due to the interference of light peculiar to each piece are seen, and a remarkable effect that the forgery is harder to obtain is produced.

The sheet having the high-brightness pigment layer according to claim 3 of the present invention has a layer in which fine pieces of the hologram film are oriented and fixed so as to be substantially flat with respect to the substrate surface. As a result, the entire sheet has a strong luminance and a strong iris, and has a remarkable effect that it is more difficult to forge.

According to a fourth aspect of the present invention, there is provided a method for producing a sheet having a high luminance pigment layer, wherein an adhesive layer is formed on a predetermined portion of the surface of a base material, and a high luminance pigment is applied thereon. Since the pigment-fixed layer is formed, the remarkable effect that the novel sheet of the present invention can be easily produced is exhibited.

In the method for producing a sheet having a high-brightness pigment layer according to the fifth aspect of the present invention, since the high-brightness pigment is a fine piece of the hologram film, the high brightness and the strong light due to the interference of light unique to the fine piece of the hologram film. The remarkable effect that the new sheet of the present invention in which the iris is seen and which is hardly forged can be easily produced.

In the method for producing a sheet having a high-brightness pigment layer according to the sixth aspect of the present invention, the fine pieces of the hologram film are oriented so as to be substantially flat with respect to the substrate surface, so that the entire sheet is strong. It has a remarkable effect that the novel sheet of the present invention, which has brightness and a strong iris and is less likely to be forged, can be easily manufactured.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional explanatory view of one embodiment of a sheet having a high brightness pigment layer of the present invention.

FIG. 2 is a schematic cross-sectional explanatory view of another embodiment of a sheet having a high brightness pigment layer of the present invention.

[Description of Signs] 1, 1A Sheet of the present invention 2 Substrate 3 Adhesive layer 4 High brightness pigment 4A Fine hologram film piece 5 Layer with high brightness pigment fixed 5A Layer with fixed hologram film fine piece

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C005 HA01 HA06 HB10 JA01 JA26 JB08 JB11 JB28 JC02 KA37 2H049 CA05 CA08 CA22 4F100 AT00A BA02 BA03 BA06 BA07 BA10B BA10C BA22 CA13 DE05B DE05C EH46 EH462 EJ54 EJ542B90H90B90B00H

Claims (6)

[Claims] 1. A sheet having a high-brightness pigment layer, wherein a layer to which a high-brightness pigment is fixed is formed on a predetermined portion of a substrate surface via an adhesive layer. 2. The sheet having a high luminance pigment layer according to claim 1, wherein the high luminance pigment is a fine piece of a hologram film. 3. The high-brightness pigment layer according to claim 2, wherein a layer in which the fine pieces of the hologram film are oriented and fixed so as to be substantially flat with respect to the substrate surface is formed. The sheet that you have. 4. An adhesive layer is formed on a predetermined portion of the surface of the substrate,
A method for producing a sheet having a high-brightness pigment layer, wherein a layer to which the high-brightness pigment is fixed is formed by applying a high-brightness pigment thereon. 5. The method for producing a sheet having a high-brightness pigment layer according to claim 4, wherein the high-brightness pigment is a hologram film fine piece. 6. The method for producing a sheet having a high-brightness pigment layer according to claim 5, wherein the fine pieces of the hologram film are oriented so as to be substantially flat with respect to the substrate surface.