JP2840825B2 - Copy protection media - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] FIELD OF THE INVENTION The present invention prevents unwanted copying
A possible copy protection medium. [0002] 2. Description of the Related Art In recent years, the copying performance of copying machines has been remarkably improved.
Mostly different compared to the original copy
Quickly and easily obtain high-quality copies that are difficult to identify
And it became possible. As a result, important documents, vouchers, etc.
New social questions such as copying photocopies and abusing the photocopies
Titles are increasing. This prevents unwanted copying.
Conventionally, as disclosed in JP-A-53-142237,
Mark on paper base material, such as "VOID"
Is provided using a fine screen, and the mark is
Is larger than the above screen to make it invisible
Place the tone screen over the paper base from above the mark
Using the formed copy-prevention printing base paper, the information is printed on the base paper.
If the object to be copied provided with a report
Warning mark in addition to the copy image corresponding to the display section on the object
Prevent copying by displaying "VOID" as a copied image
Is known, and usually a table located below
It is impossible to see the indicator and it was irradiated with ultraviolet light
In some cases, a black sea with a function that allows the display
Is pasted on the display that is the specific information,
A method of preventing copying by disabling copying is known.
ing. [0003] However, the above copying
In the prevention method, in the former method, a warning mark
Uses paper base that has been subjected to copy protection processing as printing base paper
After that, important information such as important documents and vouchers are stamped on the base paper.
Because it is applied by printing, printing, etc., identification of confidential at the time of copying
All information including information is copied and reproduced,
The display of specific information that requires copy protection is indicated by a warning mark.
Because it is difficult to select and position
It is impossible to remove the display part
If there is too much information to display, a warning mark appears when copying
Effective copying due to disadvantages such as difficulty in identifying
It is not sufficient as a prevention method. In the latter method,
Simply attach a black seal on the display of the fixed information.
It is possible to simply prevent copying, but stick a sticker
After that, to confirm the specific information of the original again, UV irradiation
The inconvenience of not being able to see without using equipment etc.
Have According to the present invention, information on a display unit for displaying specific information is provided.
Information is not copied and the information on the display is usually
It is an object of the present invention to provide a copy prevention medium that can be checked. [0005] Means for Solving the Problems The present inventors have solved the above problems.
As a result of intensive research, specific information usually found on the
It is possible to view the display part of the report
If this is the case, the difference between the original and the copy must be clearly identified.
Can be placed at any position on the display
See a copy protection method that can easily perform copy protection processing.
And completed the present invention. According to the present invention, (1) displaying information on a substrate
Of the object to be copied on which the display section is formed,
Is a copy protection medium partially provided with an optically transparent conversion medium
Wherein the optically transparent conversion medium is a lower copy medium.
It has transparency that allows the display section to be viewed, and has a different refractive index of light.
From a non-homogeneous density bodyThe non-homogeneous density body
Is composed of a hologram or diffraction grating.
Copy protection media,It is the gist. [0007] Embodiments of the present invention will be described below with reference to the drawings.
It will be explained. For example, as shown in FIG.
The stopping medium 1 includes a base material 2 made of paper, synthetic resin, or the like;
A display unit 3 for displaying general information formed on the display unit 2;
Display specific information that is inconvenient for
And a display unit 4. Copy protection medium of the present invention
Reference numeral 1 denotes at least specific information of a copy body having the above-described configuration.
Optically transparent conversion to the whole or part of the display unit 4
A medium 5 is provided. The optically transparent conversion medium 5 is a non-homogeneous density medium.
Must have transparent or translucent transparency
For this reason, the user normally looks at the display unit 4 located below the medium 5.
It is possible. The optically transparent conversion medium 5 is a holographic
It is preferable to use a diffraction grating or a grating. Copy protection medium
Body 1 is placed on the platen of a copier and copied.
Have the following three functions. [0009] As shown in FIG.
Has a light scattering surface, and transmits illumination light 7 from the light source unit 6 to the medium 5.
When reflected on the light scattering surface, scattered light 8 is generated,
It has a function that a part of the scattered light enters the light receiving unit 9
It is. Generally, in a normal black and white copier,
The copied image is received by the light-receiving part in a positive-positive relationship.
The higher the light intensity, the whiter the image becomes.
The result is a black image. Therefore, formation of the light scattering surface of the medium 5
The copied image of the shaded part becomes a solid white image and is whitened.
The display unit 4 at a position corresponding to the light scattering surface of the medium 5.
All or part of the copied image is missing. [0010] As shown in FIG.
Has a regular reflection surface, and transmits illumination light 7 from the light source unit 6 to the medium 5.
Specular reflection at the specular reflection surface (reflected at the same angle as the incident angle
The specular reflection light 10 does not enter the light receiving unit 9
It has such a function. Generally for copier structure
The light receiving part should be positioned almost vertically below the platen surface.
The light that has been specularly reflected will not
No. Therefore, the portion of the medium 5 where the regular reflection surface is formed
The copied image of the medium becomes a solid black image and is blackened.
The copy image of the display unit 4 at the position corresponding to the specular reflection surface of
Missing. [0011] As shown in FIG.
Indicates that the illumination light 7 from the light source 6 is
Partially reflected (scattered) and partially transmitted through the medium 5
It has a function. The light transmitted through the medium is
The light reaching the display unit 4 and reflected by the display unit 4 again
Part and is scattered outside the medium. Therefore, in the above process
When the amount of the scattered light 8 incident on the light receiving unit 9 is large,
A white solid image is obtained as the copy image, which corresponds to the display unit 4.
The copy image is missing or the copy corresponding to the display
The photographed image is obtained as a distorted image. Conversely, the light receiving section 9
When the amount of incident light is small, the copied image is a solid black image.
Is obtained and the corresponding copy image is missing or
Or the copied image corresponding to the display is distorted.
Can be Optically transparent conversion having the above functions
Medium 5 is, Non-homogeneous density body, or this and plane laminate,
A composite with an uneven surface forming body or the like can be given.The complex is
For example, on the whole or part of the non-homogeneous density body
And the like formed with an uneven surface. the above~
The function ofNon-homogeneous density bodyBetter than planar laminates.
For example, in the case of a planar laminate,
If you adjust the density of the copier, the image on the
Even if it is, there is a possibility that it is reproduced uniformly. This is a plane lamination
In the case of the body, since it is a uniform layer as a whole,
The effect as a mounted optically transparent conversion medium is also uniformly exhibited
That's because. In contrastNon-homogeneous density bodyIn the case of
Phase and amplitude changes in the reflected light of the illumination light due to the structure
And uniform scattering and reflection occur over the entire
I can't. ThereforeNon-homogeneous density bodyWith an optically transparent conversion medium
Display, the display will not change even if the image density of the copier is adjusted.
Is not uniformly copied, so the display section
There is no danger of being revealed. The uneven surface forming body scatters illumination light.
It has an uneven surface (light scattering surface), and the uneven surface is a medium.
Even if it is located on the surface of the body,
Is also good. In addition, the uneven surface is not only on the entire surface of the medium but also on a part thereof.
It may be formed. Further, the formed body is
Even if it is formed or has a multilayer structure.
May be formed. FIG. 5 shows the uneven surface 11
Medium 5 comprising uneven surface forming body layer 12 when positioned
Is shown. A hologram and a hologram
A folded grating and a relief structure are used as a hologram
Is Fresnel hologram, Fraunhofer holograph
Hologram, lensless Fourier transform hologram, image holo
Gram, rainbow hologram color hologram, con
Pewter hologram, hologram display,
Chipplex holograms are holograms as diffraction gratings
Rough diffraction gratings, diffraction decorations, etc.
As semi-cylindrical, hemispherical, conical, polygonal pyramid, polygonal column, polygonal
Regular geometric patterns such as trapezoids are formed continuously or intermittently
Lenticular lens, compound eye lens, etc.
Cal etched surface, sand matte processed surface, hair line
With irregular rough surface such as machined surface, metal brush machined surface
And the like. As a method for obtaining the above-mentioned uneven surface formed body,
Uneven surface using photoresist, thermoplastic, etc.
A method of forming, a method of forming an uneven surface by partial vapor deposition,
Uneven surface by molding, heat embossing, embossing printing, engraving, etc.
How to form, letterpress, offset, gravure, screen
Coatings for printing, flexo, engraved intaglio, embossing, etc.
Method of forming uneven surface by machining method, machining and chemical
An uneven surface forming method by processing or the like can be given. Uneven surface formation
If the body is a hologram, the hologram is
Can be obtained. For example, hologram
Is a relief hologram, the interference fringes are uneven
The recorded hologram master is used as a press mold.
Place a hologram-forming resin sheet on the hologram master
And heat-pressing them together by means such as a heating roll,
The concave of the hologram master is formed on the surface of the hologram forming resin sheet.
Obtain a hologram forming layer by duplicating the convex pattern
be able to. [0016] The material of the uneven surface forming body may be polysalt.
Vinyl chloride, thermoplastic polyester, poly (meth) acrylic
Rate, polyvinyl acetate, polyethylene, polypropylene
, Polystyrene, polyvinylidene chloride, polyacrylate
Lonitrile, polycarbonate, cellulosic resin,
Thermoplastic resin such as urethane; phenolic resin, urea tree
Fat, melamine resin, ethoxy resin, alkyd resin,
Saturated polyester, polyester (meth) acrylate
G, urethane (meth) acrylate, epoxy (meth)
Acrylate, polyether (meth) acrylate,
Riol (meth) acrylate, melamine (meth) ac
Thermosetting resin such as acrylate and triazine acrylate
Cured; or thermosetting with the above thermoplastic resin
Mixtures of copolymers, copolymers, and the like can be used. Further, as the above material, a radical polymerizable unsaturated
Thermoformable materials having a sum radical can be used, including
There are the following two types (1) and (2). (1) A polymer having a glass transition point of 0 to 250 ° C.
Those having a cal polymerizable unsaturated group. More specifically,
The following compounds (a) to (h) are polymerized as polymers.
Or the copolymerized one, and the method (a) to
The radical polymerizable unsaturated group introduced by (d)
Can be used. (A) Monomer having hydroxyl group: N-methylol acryl
Amide, 2-hydroxyethyl acrylate, 2-hydr
Roxyethyl methacrylate, 2-hydroxypropyl
Acrylate, 2-hydroxypropyl metaacrylate
G, 2-hydroxybutyl acrylate, 2-hydroxy
Cybutyl methacrylate, 2-hydroxy-3-pheno
Xypropyl methacrylate, 2-hydroxy-3-f
Enoxypropyl acrylate and the like. (B) a monomer having a carboxyl group: acrylic acid,
Tacrylic acid, acryloyloxyethyl monosuccinate
And so on. (C) a monomer having an epoxy group: glycidyl methacrylate
Rate and so on. (D) Monomer having an aziridinyl group: 2-aziridini
Ruethyl methacrylate, 2-aziridinylpropion
Allyl acid and the like. (E) Monomer having amino group: acrylamide, meta
Acrylamide, diacetone acrylamide, dimethyl
Aminoethyl methacrylate, diethylaminoethyl
Taclylate etc. (F) Monomer having sulfone group: 2-acrylamido
Do-2-methylpropanesulfonic acid and the like. (G) Monomer having isocyanate group: 2,4-tolu
Endiisocyanate and 2-hydroxyethyl acryle
Diisocyanates such as 1 mole to 1 mole adduct of
Adducts of radical polymerizable monomers having active hydrogen. (H) further adjusting the glass transition point of the above copolymer;
Or to adjust the physical properties of the cured film,
And the following monomers copolymerizable with this compound:
Can also be copolymerized. Such copolymerizable
As the monomer, for example, methyl acrylate, methyl
Methacrylate, ethyl acrylate, ethyl methacrylate
Rate, propyl acrylate, propyl methacrylate
Butyl acrylate, butyl methacrylate, iso
Butyl acrylate, isobutyl methacrylate, t-
Butyl acrylate, t-butyl methacrylate, isobutyl
Amyl acrylate, isoamyl methacrylate, shik
Rohexyl acrylate, cyclohexyl methacrylate
G, 2-ethylhexyl acrylate, 2-ethylhexyl
Sil methacrylate and the like. Next, the polymer obtained as described above is
React by the methods (a) to (d) described below,
Hologram by introducing polymerizable unsaturated groups
A forming resin can be obtained. (A) of a polymer or copolymer of a monomer having a hydroxyl group
Carboxy such as acrylic acid and methacrylic acid
A monomer having a group is subjected to a condensation reaction. (B) of a monomer having a carboxyl group or a sulfone group
In the case of a polymer or a copolymer, it has the above-mentioned hydroxyl group
The monomer is allowed to undergo a condensation reaction. (C) Epoxy group, isocyanate group or aziridi
In the case of a polymer or copolymer of a monomer having a phenyl group
Is a monomer having a hydroxyl group as described above or a carboxyl group
Is subjected to an addition reaction. (D) of a monomer having a hydroxyl group or a carboxyl group
In the case of a polymer or copolymer, a unit having an epoxy group
Monomer or dimer having an aziridinyl group
Isocyanate compounds and hydroxyl-containing acrylates
One to one mole of the adduct of the monomer is subjected to an addition reaction. In order to carry out the above-mentioned reactions (a) to (d),
Add a small amount of polymerization inhibitor such as hydroquinone and dry
It is preferable to do this while sending air. (2) a radical having a melting point of 0 to 250 ° C.
A compound having a polymerizable unsaturated group. Specifically, stearyl
Acrylate, stearyl methacrylate, triacrylate
Luisocyanurate, cyclohexanediol diacrylate
Rate, cyclohexanediol dimethacrylate,
Pyroglycol diacrylate, spiroglycol dime
Tacrylate and the like. Further, the above (1) and (2) are mixed and used.
And furthermore, radical polymerization on them
An unsaturated monomer may be added. This radical weight
The compatible unsaturated monomer increases the crosslink density when irradiated with ionizing radiation.
To improve the heat resistance.
Ethylene glycol diacrylate, ethylene
Glycol dimethacrylate, polyethylene glycol
Diacrylate, polyethylene glycol dimethacrylate
Hexane, hexanediol diacrylate, hexane geo
Oledimethacrylate, trimethylolpropantria
Acrylate, trimethylolpropane trimethacrylate
G, trimethylolpropane diacrylate, trimethyl
Roll propane dimethacrylate, pentaerythritol
Letetraacrylate, pentaerythritol tetrame
Tacrylate, pentaerythritol triac relay
G, pentaerythritol trimethacrylate, dipen
Taerythritol hexaacrylate, dipentaerythr
Litol hexamethacrylate, ethylene glycol di
Glycidyl ether diacrylate, ethylene glycol
Rudiglycidyl ether dimethacrylate, polyethylene
Glycol diglycidyl ether diacrylate,
Polyethylene glycol diglycidyl ether dimethacrylate
Rate, propylene glycol diglycidyl ether di
Acrylate, propylene glycol diglycidyl A
Terdi methacrylate, polypropylene glycol jig
Risidyl ether diacrylate, polypropylene grease
Chole diglycidyl ether dimethacrylate, sorby
Tall tetraglycidyl ether tetraacrylate,
Sorbitol tetraglycidyl ether tetramethacrylate
Rate etc. can be used, and the above-described copolymer mixture
0.1 to 100 parts by weight based on 100 parts by weight of solid content
It is preferable to use them. In addition, the above is
Although it can be cured sufficiently, it can be cured by UV irradiation.
Benzoquinone, benzoin, ben
Benzoin ethers such as zoin methyl ether;
UV light such as logenated acetophenones and biacetyls
Those that generate radicals by irradiation can also be used
You. In the uneven surface formed body as described above,
Even if a transparent thin film layer is provided to enhance the light reflection effect on the surface
Good. The thin film layer may be provided on a plane opposite to the uneven surface.
No. When a transparent thin film layer is provided, the following may be used as the layer.
Can be. (A) Transparent continuous having a higher refractive index than the uneven surface layer
film. This includes those that are transparent in the visible range, and those that are infrared or ultraviolet.
Some areas are transparent. The former is shown in Table 1 and the latter is shown in Table 2.
Shown respectively. In the table, n indicates a refractive index [hereinafter, (B)
-E). [0023] [Table 1][0024] [Table 2] (B) The refractive index is higher than that of the uneven surface layer.
Transparent ferroelectric. It is shown in Table 3. [Table 3] (C) The refractive index is smaller than that of the uneven surface layer.
Transparent continuous thin film. It is shown in Table 4. [Table 4] (D) a reflective metal thin film having a thickness of 200 mm or less
Film: The reflective metal thin film has a complex refractive index,
The rate: n * is represented by n * = n-iK. n is the refractive index, K
Indicates an absorption coefficient. Table 5 shows the material of the reflective metal thin film.
And the above n and K are also shown in the same table. [Table 5]Other materials such as Sn, In, Te,
Ti, Fe, Co, Zn, Ge, Pb, Cd, Bi, S
e, Ge, Rb, etc. can be used. Also listed above
Metal oxides, nitrides, etc. can also be used.
Its oxides and nitrides are used alone,
These can be used in combination of two or more. (E) Trees having different refractive indices from the uneven surface forming layer
Fat. Even if the refractive index is large relative to the uneven surface layer
It may be a small one. Table 6 shows these examples. [Table 6] In addition to the above, general synthetic resins can be used.
However, there is a resin with a large difference in refractive index from the uneven surface formed body.
preferable. (F) The above materials (A) to (E) are appropriately assembled
Combined laminated body: set of materials (A) to (E) above
The alignment is optional, and the vertical position of each layer in the layer configuration
The relationship is also arbitrarily selected. (A) to (F)
Of the film layers, the thickness of the thin film layer (D) is 200 mm or less.
However, the thin film layers of (A) to (C) and (E) and (F)
The thickness may be a transparent region of the material forming the thin film.
Generally, 10 to 10000 ° is preferable, and more preferable.
Is 100 to 5000 °. The thin film layers (A) to (F) described above are formed on an uneven surface.
By providing on the uneven surface of the formed body, the upper surface of the thin film layer and the
And reflectivity on the bottom surface increase, and irregular reflection due to uneven surface
The effect increases. This effect is due to the above thin film layer
Depends on the refractive index difference from the adult layer, the refractive index difference is 0.3 or more
And more preferably 0.5 or more.
You. Method for forming the above-mentioned thin film layer on the uneven surface formed body
When the thin film layer is made of the above materials (A) to (D)
Means vacuum deposition, sputtering, reactive sputtering
Plating, ion plating, electroplating, etc.
General thin film forming means can be used.
In the case of the material of (E) above, a general coating
A method or the like can be used. The thin film layer is the material of the above (F)
If it is a quality (laminate), use the above means, methods, etc.
They are used in an appropriate combination. In the case of the material (E), a transparent material is used.
It does not have to be a thin film as long as it has a thickness greater than a thin film
A resin layer may be provided on the uneven surface layer. Uneven surface forming body
Air consists of only holograms,
As a reflective hologram due to the refractive index difference from the
It is possible to configure. In addition, the above uneven surface formed body
Protective layer may be provided on the uneven surface
Even on an uneven surface formed body provided with a thin film layer,
May be provided with a protective layer. As the planar laminate, an adhesive layer, a transparent thin film
Layer and a transparent resin layer are sequentially formed.
In the case of, at the interface (specular reflection surface) between the transparent thin film layer and the adhesive layer
Specular reflection of light occurs. The above thin film layer is only on the entire surface of the adhesive layer
However, it may be formed partially. Of the above adhesive layer
The material is heat-sensitive adhesive, pressure-sensitive adhesive, etc.
The material of the transparent material provided in the uneven surface forming body is
The same material as the material of the bright thin film layer is used as the material of the transparent resin layer.
The same material as the material of the uneven surface forming body
No. The above-mentioned non-homogeneous density body has a different density in the layer.
Part, that is, a plane body including a part with different refractive index of light
Good, even if the parts with different densities are evenly dispersed in the layer
Or it may be biased. As a non-homogeneous density body, silver salt
Photosensitive materials, photopolymers, photochromic materials,
Lucogenides, photodielectric materials, electro-optic materials, etc.
It is. The silver halide photosensitive material is specifically described as a silver halide photosensitive material.
Volume formed by bleaching after taking a hologram
There are holograms, etc. that are used for exposure, development, fixing, and bleaching.
Refractive index of photosensitive layer in silver halide photosensitive material by a series of processing
Is changed. As the above photopolymer
PMMA, photopolymer film (Dupont)
And spiroran as photochromic material
, Na-doped CaF_Two, Ni-doped CaTiO_Three, N
a-doped KCl and the like, and chalcogenides such as TeA
sGe crystals and the like. Also, as a photodielectric material
PLZT (Pb-La-Zr-Ti), Bi_FourTi_ThreeO
₁₂LiNbO is used as an electro-optical material._Three: BaTi
O_ThreeAnd the like. The electro-optic material is used for
Electrons excited inside the ferroelectric crystal due to irradiation are lattice defects
Caused by space charge electrolysis trapped by
It causes a rate change. Optically transparent conversion having the above functions
A medium 5 is provided on a base material 2 having a display section 4 for specific information.
To prevent this, it is necessary to prevent the
By coating, laminating, etc. on required parts
It can be provided by directly forming or by forming a media transfer foil.
Even if this is provided by the transfer method,
May be formed, and this may be provided by an adhesive method. light
The transparent conversion medium 5 is provided on the display unit 4 for specific information.
As a means, the method of forming by transfer of the medium transfer foil,
The optically transparent conversion medium can be made thinner and peeled from the substrate.
If you do so, it will be destroyed, so you can prevent replacement
The advantage is that Further, the optically transparent conversion medium 5 is used as a medium.
With the means of forming by labels, any special equipment
Can be easily copied without the need for
You. FIG. 5 shows an example of the configuration of the medium transfer foil.
You. The medium transfer foil 13 shown in FIG.
4, a release layer 15, an uneven surface forming body layer 12, a transparent thin film layer
16 and an adhesive layer 17 in this order. base
The material of the film 14 is polyethylene terephthalate.
Sheet, polyimide, polymethyl methacrylate, polystyrene
Weight of ren, polyvinyl butyral, polycarbonate, etc.
Coated film, synthetic paper, metal film such as iron, etc.
A laminate or the like is used. The release layer 15 is the base film 1
4 to give releasability between the surface layer 4 and the uneven surface layer 12
It plays a role and its material is acrylic resin, cell
Loose resin, vinyl resin, polyester resin, c
Rethane resin, olefin resin, amide resin, epoxy
Xy resin and the like, and the film thickness is 0.1 to 10
μm is preferred. The material of the adhesive layer 17 is
Resin, vinyl resin, polyester resin, urethane
Resin, amide resin, epoxy resin, rubber tree
Fats, ionomer resins, and other conventional heat-sensitive adhesives
The known ones can be widely used, and the film thickness is 1 to 1
00 μm is preferred. Using the medium transfer foil 13 configured as described above,
And a display unit comprising specific information.
4 is formed as follows. Media transfer foil
13 is provided with an adhesive layer at a position including the display portion 4 of the copy target 1.
Overlap so that they touch each other, heat and press
By peeling the film 14, the optical transparency of the medium transfer foil 13 is increased.
The light conversion medium 5 is transferred onto the display unit 4 (FIG. 5). This
Is a check, for example, as shown in FIG.
As a certification stamp for the check 2
It can be used for the display unit 4 on which printing is displayed. Consist of checks
When the object 1 is copied, the copy 18 is shown in FIG.
A copy image of a part provided with the medium 5 as shown in FIG.
Is obtained as a solid white image 19 and the medium 5 is provided.
The copy image of the part that does not exist is obtained as a normal copy image.
You. Therefore, the copy image of the check owner's certification seal is missing
Therefore, the above-mentioned certification mark, which is specific information, cannot be read.
You. FIG. 7 shows an example of the configuration of the medium label.
You. The medium label 21 shown in FIG.
In addition, the uneven surface forming body layer 12, the transparent thin film layer 16, the pressure-sensitive adhesive layer 2
3, a release paper 24, and the like. Base material
22 protects the uneven surface forming body layer 12 and
It works to increase mechanical strength, and its material is
Polyethylene terephthalate, polyvinyl chloride, polyether
Steal resin, acrylic resin, epoxy resin,
Resin, urethane resin, polycarbonate, police
Tylene or the like is used, and its film thickness is 10 to 500 μm.
It is preferred that The material of the pressure-sensitive adhesive layer 23 is acrylic,
General adhesives such as rubbers are widely used. This sticky
The agent softens the tackifier to the elastic body and makes it elastic.
And polyisoprene rubber, polyisobutyl rubber, SB
R, rubbers such as butadiene / acrylonitrile rubber,
Acrylates, polyvinyl ethers, etc.
Polyterpene resin, gum rhodi
, Rosin ester and rosin derivative, oil-soluble phenol
Resin, coumarone indene resin, petroleum hydrocarbons, etc.
I can do it. In addition to tackifiers, softeners, fillers, anti-aging
A stopper or the like may be added. The thickness of the adhesive layer 23 is 0.1 to
It is preferably 50 μm. As the release paper 24,
Silicone resin, wax, paraffin, etc.
What applied to the base material, such as a film, is used. The medium label 21 configured as described above is
Peeling off the release paper 24, on the display unit that needs copy protection
To the base material 2 by sticking the
The display section 4 on which the specific information requiring copy protection is displayed
Above, an optically transparent conversion medium can be provided. When the optically transparent conversion medium 5 is provided on a smooth surface,
The display is not limited to the above, and the characters and the like are embossed in a convex shape.
It may be provided on an uneven surface as in the case of providing on the part 4. In the present invention, the material of the substrate 1 is
Japanese paper, kraft paper, clupak paper, crepe paper, cardboard
Paper, high quality paper, OCR paper, MICR paper, foam
Paper, coated paper, art paper, synthetic paper, etc .; paper cloth
Cover materials such as paper, cloth cloth and leather; polyvinyl chloride, heat
Plastic polyester, polymethacrylate, polyacetate
Nyl, polyacrylate, polyethylene, polypropylene
, Polystyrene, polyvinylidene chloride, polyacryloyl
Nitrile, polycarbonate, polyamide, polyurethane
Resin, polyimide, cellulose resin, synthetic rubber resin,
Natural rubber resin, phenol resin, urea resin, melamine
Resin, epoxy resin, alkyd resin, unsaturated polyester
Tell resin, mixed resin by appropriate combination of them,
Plastics such as copolymer resins; synthetic rubber, natural rubber, etc.
Rubber; copper, iron, aluminum, tin, lead and their
Alloys with appropriate combinations of: cotton, soup, synthetic fiber, glass fiber
Fibers such as fibers and nonwovens; wood and other wood-based materials; glass;
A composite material made of an appropriate combination of the above various materials is used.
Can be The display unit 4 which displays the specific information has a visual
Refers to all things that can be appealed to
And information having a specific meaning. This
The specific information is, for example, a fingerprint,
Personal identification information; identification signs such as registered trademarks; company name stamps, registration stamps
And the like. Specific information is characters, symbols, and figures
Images of shapes, patterns, copy-forgery-inhibited patterns, etc .; barcodes, OCR, MIC
R, information such as bittader, etc .;
Is also good. The display section is provided by solid printing of an arbitrary hue.
It may be a continuous printing layer. As means for forming the display section 4, 1) printing,
2) Silver salt photograph, blueprint, diazo photograph, dichromate gelatin
Photo, photoresist, photochromy, electrophotography,
Thermomagnetic recording, thermo plastic
Recording, 3) display by hard copy means,
For example, electric discharge recording, electrolytic recording, electrostatic recording, energization recording, etc.
Sensitivity record; pressure sensitive record using carbon and non-carbon
Record; physical or chemical thermal recording, 4) laser recording,
Holography, magnetic recording, sculpture, embossing, sash
Papermaking method display, handwriting display, LCD display display, etc.
Is mentioned. The display unit 3 also has the same shape as the display unit 4.
Means is used. The copy preventing medium of the present invention is a specific example.
, Cartons, containers, bags, cassette cases, cassettes
Packages such as memory halves, floppy cases, wrapping paper, etc.
J; Stock certificates, checks, bills, securities, certificates, passbooks, boarding
Certificates such as tickets, car horse tickets, stamps, stamps, appreciation tickets, etc .;
Important documents such as transcripts, family register copies and abstracts; cash cards,
Credit card, membership card, greeting
Cards such as cards, postcards, business cards, IC cards;
Others, forms, envelopes, tags, shiori, calendars, posters
ー, pamphlets, passports, POP supplies, coasters
ー, display, nameplate, keyboard, makeup
Goods, jewelry (watches, lighters), stationery, building materials, radio
E, televisions, speakers, calculators,
Flannel, emblem, key, clothing, footwear, equipment, OA machine
Vessels and the like. The present invention provides a method for copying by a black-and-white copying machine.
It is not limited to copy protection, but for color copying machines
Is also effective. Copying copy protection media with a color copier
When three types of illumination light of different wavelengths are sequentially
Irradiation is performed for illumination light of a specific wavelength
The display section at the position corresponding to the medium
Image is missing or unclear
A copy that gives a perfect image is obtained, and the copy
Like black-and-white copying machines,
It is possible to prevent copying with advanced contents. Book
The invention is not limited to the prevention of copying by a copying machine,
It is necessary to prevent copying even when copying with a camera.
And it is possible. The copying light or the like is transmitted from the hologram or diffraction grating.
The display was illuminated through an optically transparent conversion medium
In this case, the following effects are obtained. Hologram or diffraction grating
When light is radiated to the
Diffraction angle is smaller, longer wavelength light has larger diffraction angle
And spectrally spectroscopically analyzed. For holograms,
In addition to the above spectroscopy, the diffraction
Thus, a diffraction image due to interference is generated. Therefore, optical transparency changes
When the replacement medium is irradiated with copying light,
A folded image or interference color (interference fringe) due to the diffraction grating occurs,
These diffracted images are recorded on the copy to prevent copying.
Also, the angle of incidence of the incident light on the hologram or diffraction grating changes.
Diffraction light is generated even if the
Diffraction image is always generated even if the
No reflected light is obtained, and it is impossible to copy the display. this
When a hologram or diffraction grating is used,
Method to prevent copying by changing the angle of reflected light of the object
As a result, copying can be more reliably prevented. Obedience
Therefore, besides preventing black and white copying machines, color copying
Good for photocopiers and photocopies
A copy prevention effect is obtained. [0050] [0051] [0052] As described above, the anti-copying medium of the present invention
The body consists of a substrate with a display that displays information on a substrate.
Optically transparent conversion of the whole or part of the copy on the display
A copy protection medium provided with a medium, wherein the optical transparency is
Light conversion medium is transparent so that the display section of the copy object below can be seen
Non-homogeneous density that includes
By consisting of a degree body,Copy the copy protection medium of the present invention
IfIn the display below the optically transparent conversion medium
All or part of the illumination light is reflected incorrectly,
Copying of the photographed image is prevented. The optically transparent conversion medium is
Since it has transparency, the optically transparent
The display underneath the exchangeable medium under visible light.
Handling of copy prevention media that can be visually checked, read and confirmed
Has no problem.Further, the anti-copy media of the present invention
Hologram or diffraction grating of density body irradiated white light
The wavelength width of the diffracted light reproduced at the time is very narrow,
For black-and-white copiers.
Cannot copy effectively. Also, the irradiation angle of the copying light is defined as the reproduction irradiation angle.
When designed to match, diffraction at a specific wavelength (specific color)
Light appears strongly and the irradiation angle changes, which is different from the design irradiation angle
Then, since the complementary color of the above specific color appears strongly, the normal color
Can be copied effectively, even in the case of a color copier, etc.
Can be prevented. Thus, black and white copiers, color copiers, etc.
Applicable to various types of copy protection. The anti-copy medium of the present invention is optically transparent.
Providing conversion media selectively at any location
Ready-made information, such as certificates, can be printed.
Specific information such as a seal or a signature is later applied to the
Optical media on the seal or signature
What is necessary is just to provide a transparent conversion medium.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing different reflection states of illumination light at the time of copying due to a difference in function of an optically transparent conversion medium. FIG. 2 is a schematic diagram showing different reflection states of illumination light at the time of copying due to a difference in function of an optically transparent conversion medium. FIG. 3 is a schematic diagram showing different reflection states of illumination light at the time of copying due to a difference in function of an optically transparent conversion medium. FIG. 4 is a perspective view showing an example of a copy prevention medium, and showing an embodiment in which an optically transparent conversion medium is provided on a copy body by transfer. FIG. 5 is a vertical sectional view taken along line VV of FIG. 4; FIG. 6 is a perspective view showing a copy of the copying object of FIG. 5; FIG. 7 is a longitudinal sectional view of a medium label. [Description of Signs] 1 Copy prevention medium 2 Base material 3 Display section for displaying general information 4 Display section for displaying specific information 5 Optically transparent conversion medium 6 Light source section 7 Illumination light 8 Scattered light 9 Light receiving section 10 Regular reflection light

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-56-99358 (JP, A) JP-A-55-101922 (JP, A) JP-A-60-112481 (JP, A) JP-A 60-112481 8880 (JP, A) Japanese Utility Model Showa 55-65652 (JP, U) U.S. Pat. No. 4,315,665 (US, A) Japanese Patent Publication No. 49-7451 (JP, B1) (58) Fields investigated (Int. Cl. ⁶ , DB Name) G03G 21/00 560-562 B42D 15/10 531 B41M 3/14

Claims (1)

(57) [Claims] A copy prevention medium in which an optically transparent conversion medium is provided on an entire surface or a part of a display body on which a display unit for displaying information is formed on a base material, wherein the optically transparent medium is provided. conversion medium has a visible transparency of the display unit of the copying of the lower, and Ri refractive index of the light Do from heterogeneous density comprising different parts, non-homogeneous density body hologram or diffraction grating
Copy protection medium characterized by being composed of.