JP2014100877A - Colored sheet, colored label, and colored transfer sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a colored sheet with a brand pattern or the like to be attached to an adherend for proving authenticity of the adherend, capable of maintaining the proof by excluding the possibility of use of a similar counterfeit pattern printed on a sheet to be attached to an other unauthentic adherend.SOLUTION: Patterns having a slight difference in visibility are formed on the upper and lower sides of a transparent resin substrate to constitute a colored sheet, and a reflective magnetic thin film is arranged at the back thereof, so that the patterns are visually recognized as if formed of one pattern. In authenticity determination of the colored sheet, in addition to determination by reading a magnetic recording, the slight difference in visibility is determined to achieve easy determination of authenticity.

Description

  The present invention relates to a colored sheet, a colored label, and a colored transfer sheet (hereinafter also referred to as a colored sheet or the like). Specifically, two types of colored patterns having different visibility can be recognized as one pattern. The present invention relates to a forgery-preventing colored sheet, a colored label, and a colored transfer sheet that have high anti-counterfeiting properties and can easily determine their authenticity.

  Here, visibility refers to “representing whether or not visual characters or figures can be clearly recognized”, and it is easy to see the characters and figures when visually confirmed. This is an indication. In other words, it can be said to be one of optical characteristics such as letters and figures formed by some means.

  In the present specification, “parts” indicating blending are based on mass unless otherwise specified.

Furthermore, the surface of a certain colored pattern layer provided on the transparent resin substrate that is not in contact with the transparent resin substrate is “an inclined surface of a predetermined angle”. It means that it is inclined at a predetermined angle with respect to the surface. This also includes forming a substantially inclined plane. (Here, the term “substantially flat” means a “surface” that is so small that the unevenness and the degree of bending of the flat surface cannot be discerned by visual observation and are recognized as “planar” in visual observation.)
Further, “haze (also referred to as haze value)” is obtained according to JIS K 7136 “Plastic—How to Obtain Haze of Transparent Material”, and “of the transmitted light transmitted through the test piece, "Percentage of transmitted light deviated by 2.5 degrees or more from incident light due to forward scattering", which is defined as "ratio of diffuse transmittance to total light transmittance (parallel transmittance + diffuse transmittance)".

(Main use) The main use of the colored sheet of the present invention is a field used in the field of anti-counterfeiting, design use, etc., and specifically, used in the following (1) to (4) There is a field to be.
(1) Various product fields, such as genuine products manufactured by manufacturers, where certification of genuine products is significant, such as electronic equipment, electrical equipment, computer-related products, and their components, computer-related software, genuine equipment (paper Consumables such as printers and toner etc.) Drugs, quasi drugs or chemicals.
(2) Fields where consumers are strongly required that the product itself is a genuine product, or by adding a sheet, etc., to improve designability, to show that the product is expensive, and to add value to the product Such as books, documents, lectures, plays, movies, photographs, paintings, sculptures, prints, drawings, models, etc., or edits thereof, or those recorded on a recording medium (video cassettes, compact discs, Copyrighted materials such as digital video discs, etc., ROM boards that have been set and prevented from being changed (used for computer equipment, game machines, game machines, etc., including stickers across ROMs and boards). Watches, neckties, mufflers, clothing and other clothing, handkerchiefs, neckerchiefs, bags, bags, belts, wallets, accessory cases, jewelry, jewelry and other jewelry, sports Supplies, cosmetics, tableware, commemorative cup, key chains, figurines, vases, pottery, dolls, furniture, joinery, umbrellas, walking sticks, food containers, cigarettes, cigars, etc., and their luxury brands Hinto.
(3) Identification means (ID card) field, such as passport, driver's license, insurance card, membership card, identification card, resident registration card, hospital card, or library card.
(4) Fields that are required to be genuine in order to maintain the economic order, such as gift certificates such as gift certificates and gift certificates, or cards such as prepaid cards, credit cards, and cash cards.

In addition, in the field of packaging these items and sealing the packaging, for example, for storage or in the envelope as mail or small parcels, for delivery or delivery in packages, packaging products In order to prove its authenticity in the field to be sold in the field, the field to be simply packaged, the field to be used as a sealing seal for them, the identification and the generic drug, etc. Fields to be affixed, or those provided for services that provide these, such as proof of providing various services, proof of loaned goods, and proof of being able to receive various services, in particular , On the colored sheets, etc., depending on the printed pattern, etc., manufacturer, publisher, author, game machine operator, luxury brand, certificate issuer, card security Names of companies, gold vouchers, etc., issuers, delivery or delivery companies, sales companies, other related organizations, etc., logos, seals, and other characters, figures, symbols, etc. that are distinguishable from other companies, that is, brand logos It includes indications and authenticity characters and symbols, etc., and the logo, characters, graphics, symbols, etc. enhance (add proof) the reliability of the added value and quality assurance of the product. Suitable for some fields.
(Prior Art) In recent years, development of a hologram capable of reproducing a three-dimensional image (3D image) using light interference has progressed, and this hologram requires advanced manufacturing technology and has various forms such as labels, seals, or Since it can be formed in a foil shape, it is applied and used as a forgery prevention means by sticking it to a part of various things including the above field.

  This hologram has been widely used since it can be seen at a glance whether it is genuine or not and is difficult to manufacture as described above.

  In other words, as a means of preventing counterfeiting, it is provided on a part of a certificate such as a credit card such as a credit card, or it is provided on various articles such as a book cover, a pamphlet, a record jacket, a package, and clothing for the novelty of the appearance. It has been tried.

  In order to enhance the decorativeness and anti-counterfeiting property of such a hologram, a predetermined “picture” is imparted to the hologram. That is, an attempt has been made to provide a “picture” on the surface of a hologram-attached label attached to an article by printing or the like.

  Conventionally, the present applicant, for a label with a hologram with a pattern, a support and a transparent resin, a reflective thin film layer, an adhesive layer, and a release sheet as necessary are sequentially laminated on the support, An “adherent” having at least one “pattern” layer between any of the above-mentioned layers, in which the “picture” and the hologram reproduction image are integrated in harmony, and a label with a hologram with a pattern is attached. It is beautiful in harmony with the design, color, and color tone, and is useful as a `` hologram sticker '', and exhibits high anti-counterfeiting properties when affixed to credit cards and other high-end products. We provide labels with holographic images.

  In particular, when an “image” layer is provided adjacent to (attached to) the reflective thin film layer and an attempt is made to rewrite the “image”, the reflective thin film layer is damaged and the rewritten “image” It is disclosed that it is possible to easily determine whether or not there is, and to prevent counterfeiting (see Patent Document 1).

  In addition, the support on the surface of the colored label is a resin film, and the durability of the attached pattern such as the scratch resistance is insufficient with the resin film alone. Also disclosed is a label with a hologram that improves the durability, the back side is not transparent, and has an excellent texture, and a method for manufacturing the same (see Patent Document 2).

  However, the “pattern” layer and “printing” layer added to these colored labels are formed by selecting pigments and dyes suitable for each printing method by a general coating method or a general printing method. However, if you try to rewrite the "pattern" layer, it will physically damage the "reflective thin film layer" that is in contact with the "pattern" layer, and physically rewrite only the "pattern" layer. Therefore, it is intended to prevent counterfeiting.

  Also in Patent Document 2, the “printing” layer is only described as “printing by known screen printing or gravure printing using a known ink without being particularly limited by a known printing method”. However, “similar visibility” to a genuine hologram (although it does not form a specific “image” like a hologram reproduction image when visually observed, it reflects light partially or partially. It is possible to create a counterfeit product by applying a “printing” layer with exactly the same color tone to a label that has been given a “similar optical effect”. it was thought.

  In order to solve this problem, in order to develop the hologram effect also on the “printing” layer formation region, the present applicant provides a transparent reflective thin film layer on the hologram relief, and the transparent reflective thin film layer on the transparent reflective thin film layer. A technique is disclosed in which a “printing” layer is provided in part and a total reflection thin film layer is provided so as to cover the entire layer (see Patent Document 3).

  However, these techniques require a very complicated process of manufacturing a hologram, which not only makes the sheet and the like very expensive, but the “printing” layer is a general one, "The layer itself does not have any anti-counterfeiting properties, so it is still impossible to prevent forgery as described above, and the" printing "layer itself has a more advanced anti-counterfeit function. Therefore, it is impossible to provide an inexpensive anti-counterfeit effect.

Japanese Utility Model Publication No. 5-18779 JP 2007-86251 A Japanese Patent Application Laid-Open No. 7-129069

  In the present invention, by providing two types of colored pattern layers (for example, “printing” layers) on the upper and lower sides of the transparent resin substrate, it is observed as if one colored pattern layer is formed. However, depending on a predetermined observation method, the two kinds of colored pattern layers can be easily discriminated visually, and discrimination by magnetic recording and magnetic reading on the reflective magnetic thin film layer is also possible. The present invention provides a colored sheet, a colored label, and a colored transfer sheet that are inexpensive, excellent in anti-counterfeiting properties, and easy to determine authenticity.

To solve the above problem,
The first aspect of the colored sheet of the present invention is:
A colored pattern layer A is provided on a part of one surface of the transparent resin substrate, a colored pattern layer B is provided on a part of the other surface of the transparent resin substrate, and the other of the transparent resin substrate. And a colored sheet provided with a reflective magnetic thin film layer so as to follow the colored pattern layer B, the surface of the colored pattern layer B not in contact with the transparent resin substrate is the transparent resin group. A slope having a predetermined angle is formed with respect to the other surface of the material.

According to the colored sheet of the first aspect,
A colored pattern layer A is provided on a part of one surface of the transparent resin substrate, a colored pattern layer B is provided on a part of the other surface of the transparent resin substrate, and the other of the transparent resin substrate. And a colored sheet provided with a reflective magnetic thin film layer so as to follow the colored pattern layer B, the surface of the colored pattern layer B not in contact with the transparent resin substrate is the transparent resin group. It is possible to provide a colored sheet characterized by having a slope of a predetermined angle with respect to the other surface of the material, and the colored pattern observed as if formed as one pattern is actually It is composed of two kinds of colored patterns with different visibility and is provided with a reflective magnetic thin film layer capable of recording and reading predetermined information by a predetermined magnetic recording / reading system. High Easy to determine the authenticity, it is possible to provide a colored sheet.

  In particular, the colored pattern layer A constitutes, for example, “pattern a”, which is “certain character information etc.”, and the colored pattern layer B is “pattern b,” which is “character information etc. different from“ pattern a ””. The colored sheet was observed from the front in front of the transparent resin substrate (meaning that it was observed from above vertically on the other surface of the transparent resin substrate). In this case, the colored pattern layer A and the colored pattern layer B exhibit the same “color”, and there is no distinction between “pattern a” and “pattern b”. b ”is visually recognized as a“ synthesized pattern ”, ie,“ one pattern c ”(one synthesized character information, etc.), and the colored sheet is predetermined on the transparent resin substrate side. Is diagonally above the angle? When observed, the colored pattern layer A and the colored pattern layer B exhibit different “colors”, and a distinction between “pattern a” and “pattern b” appears. “Pattern b” is observed as separate character information or the like, that is, “some character information or the like” and “different character information or the like (meaning different character information or the like from“ some character information ”)”. A colored sheet characterized by the above can be provided.

  This means that at a glance, a pattern observed when presenting “one pattern c”, ie, “one character information etc.” expressed by one “color”, at a predetermined observation angle, It means that “pattern a” and “pattern b” are observed as “character information and the like divided into two parts” having different “colors”.

The second aspect of the colored sheet of the present invention is:
The transparent resin base material has a haze of 10% or less.

According to the colored sheet of the second aspect,
It is possible to provide the colored sheet of the first aspect characterized in that the haze of the transparent resin substrate is 10% or less, and the visibility of the colored pattern layer B is made clearer to prevent forgery thereof. A colored sheet having further improved properties can be provided.

The third aspect of the colored sheet of the present invention is:
The refractive index of the transparent resin substrate and the refractive index of the colored pattern layer B are the same or the difference in refractive index is 0.1 or less.

According to the colored sheet of the third aspect,
The coloring according to the first aspect or the second aspect, wherein the refractive index of the transparent resin substrate and the refractive index of the colored pattern layer B are the same or the difference in refractive index is 0.1 or less. The sheet can be provided, and the effect of eliminating the reflected light at the interface between the transparent resin base material and the colored pattern layer B can be made clearer, and a colored sheet with further improved forgery prevention can be provided. .

The colored label which is the fourth aspect of the present invention is
An adhesive layer is provided on the reflective magnetic thin film layer of the colored sheet of the first to third aspects.

According to the colored label of the above aspect,
A colored label characterized in that an adhesive layer is provided on the reflective magnetic thin film layer of the colored sheet of the first to third aspects, and can be applied to an adherend. Thus, a colored label can be provided.

The colored transfer sheet according to the fifth aspect of the present invention is
An adhesive layer is provided on the reflective magnetic thin film layer of the colored sheet of the first to third aspects, and a transfer base material covers the transparent resin base material and the colored pattern layer A. It is provided so that peeling is possible.

According to the colored transfer sheet of the above aspect,
An adhesive layer is provided on the reflective magnetic thin film layer of the colored sheet of the first to third aspects, and a transfer base material covers the transparent resin base material and the colored pattern layer A. It is possible to provide a colored transfer sheet characterized in that it is provided so as to be peelable, and can be easily applied to an object imparting anti-counterfeiting properties. Thus, it is possible to provide a colored transfer sheet capable of enhancing the anti-counterfeiting property.

  In the colored sheet or the like of the present invention, the colored pattern layer A is formed on a part of one surface of the transparent resin base material, and the “pattern” represented by the colored pattern layer A (referred to as “pattern a”). .) Is visually recognized as a “pattern” (pattern a) of “same color (one color)”.

  Furthermore, in the colored sheet or the like of the present invention, the colored pattern layer B is provided on a part of the other surface of the transparent resin base material, and is not in contact with the transparent resin base material of the colored pattern layer B. The surface is a slope, and the “pattern” (referred to as pattern b) represented by the colored pattern layer B is “pattern” (pattern b) of “same color (one color)”. Visible.

  The “pattern a” that is the formation region of the colored pattern layer A and the “pattern b” that is the formation region of the colored pattern layer B are “one pattern having one color” within a specific observation angle range. (Referred to as “pattern c”). Therefore, due to the identity of this “color”, the colored sheet or the like of the present invention has one “pattern c” within that range. Observed as formed.

In the first place, "color" is "information" that is recognized by visually recognizing reflected light from an "object" with three elements of hue (hue), saturation (brightness), and lightness (brightness). . (The three elements are also called “three attributes of color”.)
The term “color tone”, which is commonly used, means a blend of colors, color shades and strengths, and in the same way as above, “hue”, “saturation” and “lightness” are combined. Although it is a concept, in this specification, those three elements are unified by the word “color”.

  Therefore, “two or more objects of the same color” here means that those “objects” “present the same color”, and they are “the same hue”, “the same color” It means that they have “saturation” and “same brightness”, and they are recognized as “the same color” when they are visually recognized.

  In other words, the colored pattern layer A and the colored pattern layer B are prepared by dispersing and dissolving a dye or pigment in a resin having transparency, but the type of the dye or pigment, its dispersibility, solubility, Depending on the size, shape, surface condition, other additives of pigment particles, and the forming method, drying and curing conditions at the time of formation, as well as the thickness and interface conditions, hue, saturation, and brightness Will be decided, and "color" will be decided.

  Furthermore, since the formation thickness of the colored pattern layer B of the colored sheet or the like of the present invention is inclined (because one surface of the colored pattern layer B is in contact with the transparent resin substrate and the other surface is an inclined surface). The thickness gradually increases monotonously from the thinner to the thicker.) When using only one composition of ink when forming the colored pattern layer B, the colored pattern layer There is a possibility that a slight “color” difference is visually recognized in the formation region of B.

  The inclination angle of the colored pattern layer B (the angle formed by the “other surface” and the “inclined surface” of the transparent resin base material) is the point (observer's eye position) for observing the colored sheet or the like of the present invention. )), It is possible to set the angle to 5 degrees to 40 degrees in consideration of the determination of its authenticity by a distance of about 30 cm. Among these, it is suitable to set it as 10 to 30 degrees.

  When judging authenticity, for example, when observing the colored sheet or the like of the present invention separated by a distance of 30 cm, “light reflected by the slope of the colored pattern layer B” must be concealed originally. When the angle is less than 5 degrees, the reflection angle of the “light reflected by the inclined surface of the colored pattern layer B” returns to the direction perpendicular to the “other surface” of the transparent resin substrate (observation direction) The light is less than 10 degrees, and the two lights are simultaneously recognized, and the confidentiality of the “light reflected by the slope of the colored pattern layer B” is significantly reduced.

  If the tilt angle exceeds 40 degrees, the angle between the reflected light and the light returning in the vertical direction exceeds 80 degrees, and at the same time, it becomes difficult to visually recognize when judging authenticity. The reproducibility of determination, that is, the reliability of determination is lowered.

  Therefore, in order to make confidentiality and the reliability of determination higher, the inclination angle of the colored pattern layer B is set to 5 degrees to 40 degrees, and further, 10 degrees to 30 degrees.

  Furthermore, in order to ensure that the “light reflected by the slope of the colored pattern layer B” that is concealed can be reliably recognized when determining its authenticity, the slope of the colored pattern layer B must be a flat surface. Most desirably, it should be at least substantially planar. In other words, if the slope is flat, the blur width of the reflection angle of the reflected light can be made very narrow and may be discovered by a third party who does not know that such light exists. Can be made as small as possible. In addition, even if the inclined surface is substantially flat, if the unevenness is small enough not to cause an unnecessary diffraction phenomenon, or if the uneven surface changes monotonously, the same as above The blur width of the reflected light can be made relatively narrow. Further, when the colored pattern layer B is formed discretely, it is desirable that the respective inclination angles in the respective formation portions are the same, and even if they are different, the difference is less than 5 degrees, More desirably, it is less than 1 degree.

  However, if the formation area “pattern b” of the colored pattern layer B is a relatively large area, for example, a square area of 5 mm in length × 5 mm in width, one slope with an inclination angle of 30 degrees is formed in this area. If the thickness of one end is 0.03 mm, the thickness of the other end must be (0.03 mm + 2.8 mm), and a colored layer having such a thickness is formed. Although it is possible to do so by an intaglio printing method, a molding method, etc., it is difficult to maintain its formation accuracy high.

  Therefore, this 5 mm long × 5 mm wide region is divided into 50 μm long × 50 μm wide regions, and slopes with an inclination angle of 30 degrees are formed for each small region, thereby increasing the formation accuracy. It is also suitable.

  In this way, when the thickness of the colored layer at one end of the region of 50 μm in length × 50 μm in width is 10 μm, the thickness of the colored layer at the other end is set to 38 μm, so that the slope with an inclination angle of 30 degrees is obtained. Can be formed with good reproducibility.

  Furthermore, after dividing the 5 mm long × 5 mm wide region into 50 μm long × 50 μm wide regions, a colored layer may be formed only at the jumping position, or an aggregate of halftone dot regions having a diameter of 50 μm. Its formation is easy and suitable.

  When the reflective magnetic thin film layer is provided on the back surface (including the meaning of the back) of the colored pattern layer A or the colored pattern layer B to reflect light, the above-described tendency appears more remarkably. Depending on the wavelength distribution and intensity distribution of the light to be referred to, the three elements of the reflected light change, and as a result, the visually recognized “color” may be different.

  Therefore, in order to realize the “same color” in the present invention, the final adjustment is made based on the behavior of light transmitted or reflected through the colored sheet or the like when referring to the colored sheet or the like of the present invention. In particular, the “color” observed in a specific range needs to be the same.

  That is, when the “color” visually recognized in the colored pattern layer A is observed vertically above, not only the light reflected on the uppermost surface of the colored pattern layer A but also the colored pattern layer A and the transparent It is necessary to take into account light (also referred to as return light) that passes through the resin base material, is reflected in the vertical direction by the reflective magnetic thin film layer, and returns through the transparent resin base material and the colored pattern layer A again. .

  Further, when the “color” visually recognized in the colored pattern layer B is observed vertically above, not only light simply reflected at the interface between the colored pattern layer B and the transparent resin base material, but also transparent resin It is necessary to consider the transparency of the substrate, the thickness of the colored pattern layer B, and the degree of change thereof.

Furthermore, when observing the “color” visually recognized in the colored pattern layer B in the reflection direction of the inclined surface, it is transmitted through the transparent resin substrate and the colored pattern layer B and regularly reflected by the reflective magnetic thin film layer. Again, it is necessary to take into account the light transmitted through the colored pattern layer B and the transparent resin substrate. (Here, regular reflection refers to reflection in which the incident angle and the outgoing angle of light are equal to a certain reflecting surface.)
Here, the “color” of the colored pattern layer A and the colored pattern layer B naturally penetrates not only to the reflected light on the surface but also into the layers of the colored pattern layer A and the colored pattern layer B. Including light reflected by a certain color pigment or the like, but for the sake of simplicity, in the following description, it is referred to as “reflection on the surface of the colored pattern layer A or reflection on the surface of the colored pattern layer B”. Unify into expression.

  In any case, in the colored sheet or the like of the present invention, it is essential that the “color” of the colored pattern layer A and the colored pattern layer B exhibits “the same color” when observed from the vertical upper side. In addition, it is required that the colored pattern layer A and the colored pattern layer B exhibit different “colors” in the observation in the reflection direction of the inclined surface.

  Of course, in the observation in the reflection direction of the inclined surface, the “color” of the colored pattern layer A and the colored pattern layer B may exhibit a clearly different “color” (meaning that “color difference” is large). Furthermore, in order to improve the reliability of authenticity determination, that is, anti-counterfeiting, to make the observation angle at which such a difference appears (meaning an angle range that can be determined) to be very narrow, preferable.

The “color difference” here is, for example, ΔE {= (Δa ² + Δb ² + ΔL ² ) ^1/2 )} in the L * a * b * chromaticity diagram (LAB color system). The “color difference” represented by “same color” means that the “color difference” is 0.5 or less.

  Other color systems proposed by the International Commission on Illumination (CIE) include RGB, XYZ (Yxy), UVW (Luv), etc., but these are correlated and can be converted easily. It is possible and the conversion value can also be used.

  The change in “color” is recognized as “difference” when ΔE exceeds 0.5 (SLIGHT: the difference is felt slightly), and clearly exceeds “1.5” when ΔE exceeds 1.5. “Difference” can be visually recognized (NOTICEABLE: the difference is felt considerably).

  In the first place, the general environment for observing the colored sheet or the like of the present invention is an environment where an article or the like to which the colored sheet or the like is applied is used in the various applications described above, and when wearing or carrying it. When it is applied to an outdoor environment or an indoor environment such as a department store or a shopping mall outside the home, and it is applied to a device installed in a home, it becomes the home environment.

  In an outdoor environment, sunlight or light reflected by a building or the like becomes incident light. In an indoor environment, a department store, a shopping mall, or a fluorescent lamp that is used for general household illumination. Becomes the light source, and the light emitted from the fluorescent lamp or the like becomes the incident light. Therefore, the angle is plural and various, and the specular reflection light is expressed by the many incident light.

  Therefore, the area of the “pattern b” of the colored pattern layer B is in a very limited predetermined angular direction (the regular reflection angle direction of the reflective magnetic thin film layer) except when an illumination light source happens to exist. One “color” will always be presented. Moreover, even if there is an illumination light source at a predetermined angle due to such a coincidence, the amount of illumination light from one or two illumination light sources can be ignored compared with the amount of illumination light from the illumination light source in the entire room. .

This is because the predetermined angle is set to be very narrow, and those that deviate from the left and right from the line connecting the observer and the colored sheet are excluded, so the “color” of the colored pattern layer B is affected. This is because the angle range considered to be limited to a very narrow range. (For example, when assuming a dome-shaped hemispherical curved surface centered on a colored sheet or the like, the corresponding range on the curved surface is less than 1/100 compared to the entire area of the curved surface. Meaning.)
Therefore, the observer can arrange the illumination light source only within an angle range that affects the “color” of the colored pattern layer B (meaning that light sources around the light source other than the light source are shielded. This is an example of the method.) Unless the method is taken, the change in the “color” of the colored pattern layer B is not noticed.

  Thus, the fact that the “pattern b” exhibits a “constant” color other than the very limited optical environmental condition is a slight amount in the limited optical environmental condition based on the “color”. It is possible to “contrast” the moment when the color changes, and by this “contrast”, reliable authenticity determination is realized.

  Furthermore, the colored pattern layer A and the colored pattern layer B are relatively highly concealed, for example, 10% to 30% in terms of visible light transmittance (the light returning back and forth within the layer is 1% to 9%) If the specular reflection light on the slope is slight, the above-mentioned “difference in visibility” can be made “unrecognizable” only by glanced at the colored sheet. Only those who can know that there is a “difference in visibility” (meaning a person with a legitimate right) can interpret and interpret the “difference” to determine authenticity. It is also preferable to do so.

  In addition, when the “pattern a” is observed from vertically above, it receives uniform reflected light from the reflective magnetic thin film layer behind it, and uniform brightness is added to every corner of the region. Also, they are observed as the same “color”.

  The intensity of the reflected light is uniform, and the reflection angle is in the vertical direction.

  When the “pattern b” is observed from vertically above, the “slope” under the colored pattern layer B and the “regular reflected light” from the reflective magnetic thin film layer formed following the surface. Does not return to the viewer, so no brightness from behind is added.

  Therefore, in order to make such “pattern a” and “pattern b” have the same “color”, at least the “brightness” of the colored pattern layer B is higher than that of the colored pattern layer A, or the colored pattern layer B It is necessary to make the thickness of the layer A thicker than that of the colored pattern layer B to reduce the light transmittance.

Such adjustment makes the “color” of “pattern a” and “pattern b” the same under desired conditions. (It is needless to say that “the same color” here means “the same color” when the return light is optically measured by a color difference meter or the like).
For example, when the ratio of the light returning from “pattern b” to the light returning from “pattern a” is (1.5) vs. (1) for the observer, The same transparent resin and the same dye or pigment are used for the colored pattern layer A, and the thickness ratio is adjusted to (1.5) vs. (1).

  Alternatively, it is also preferable to add transparent fine particles such as silicon resin having an effect of scattering the transmitted light while maintaining transparency to the colored pattern layer B because the adjustment is easy.

  Also, if the transparency of the colored pattern layer A is high, strong light is reflected from the reflective magnetic thin film layer, so that the entire area of the colored sheet or the like becomes brighter, and the “pattern a” of the colored pattern layer A The contrast (brightness difference) between the area and the peripheral area of the area is reduced, and it is visually recognized as if the “pattern a” has disappeared. In order to increase the anti-counterfeiting property, it is suitable.

  In addition, if both the colored pattern layer A and the colored pattern layer B are highly transparent, in “pattern a”, the reflected light from the reflective magnetic thin film layer is strongly reflected as specularly reflected light. By increasing the “brightness” of the colored pattern layer B used for the “pattern b” as a region having “color”, the “difference in visibility” becomes slight. In the case where the reflectance of the reflective magnetic thin film layer itself is high (when the reflectance of visible light serving as illumination light is 70% or more), it appears remarkably.

  On the contrary, when the colored pattern layer A and the colored pattern layer B are made highly concealed, the reflectance of the reflective magnetic thin film layer itself is low (the reflectance of visible light serving as illumination light is 30% or less) In the case of (.), It will appear more remarkably.

  As described above, the formation shapes of the upper and lower surfaces of the colored pattern layer A and the lower surface of the colored pattern layer B have no scattering property with respect to transmitted or reflected light, and are “flat surfaces”. ”(Meaning something close to“ mirror surface ”), using a stainless screen printing method, an intaglio method, a resist processing method, and a colored layer transfer method. Add a highly soluble dye to the resin, or mix a pigment with a small particle diameter into a transparent resin, and use a ball mill, kneader, etc. to prevent the pigment from agglomerating. It is preferable to use a material sufficiently dispersed in the resin.

  In addition, when using the offset printing method, gravure printing method, silk screen method, it is necessary to realize the above "flat surface" by adjusting the viscosity of the ink at the time of formation and managing the drying conditions. is there.

  The thickness of the colored pattern layer A is 2.0 μm to 20 μm, and its flatness is expressed by the surface roughness Ra, which is not more than the wavelength of visible light, that is, 0.1 μm to 0.5 μm.

  If it is less than 2.0 μm, a stable “color” cannot be exhibited, and if it exceeds 20 μm, the step becomes visible, which is inconvenient.

  As for the flatness, when Ra exceeds 0.5 μm, the light scattering property is increased, the reflection of light at the interface increases, and the visibility of the interface and the visibility of the colored pattern layer B interface are increased. This is inconvenient because it causes a large difference between the two. Of course, it is preferable that the flatness is less than 0.1 μm, but when it is formed by a printing method, a resist processing method or the like, it is accompanied by physical difficulty.

  The thickness of the colored pattern layer B is determined in accordance with the thickness of the colored pattern layer A. However, at least one surface needs to be thick enough to be a “slope”, and the colored pattern layer B When the cross-sectional shape is compared with a trapezoid, first, the thickness of the base portion is set to 2.0 μm to 10 μm.

  The shape of the right triangle on the base (the trapezoid is the shape in which the right triangle is placed on the base rectangle) is determined by the inclination angle of the “slope”. .

  When the size of the region of “pattern b” that is the formation region of the colored pattern layer B is, for example, 100 μm × 100 μm, when the inclination angle is 5 degrees, the shape of the right triangle is The end is 0 μm and the other end is 8.7 μm. When the inclination angle is 40 degrees, one end is set to 0 μm and the other end is set to 62.8 μm.

  At this time, the region of 100 μm × 100 μm is subdivided into 10 μm × 10 μm, and a small right triangle is put on each small region of 10 μm × 10 μm, and 0 μm is added to one end and 6.3 μm is added to the other end. It is also possible to obtain a slope with an inclination angle of 40 degrees.

  And the flatness of the inclined surface shall be 0.1 micrometer-1.0 micrometer.

  The thickness of the base portion is set to 2.0 μm or more, and is set to 10 μm or less to make the step inconspicuous. As for the flatness, since the surface is not conspicuous under the colored pattern layer B, even if it is slightly rougher than the colored pattern layer A, the visibility is not affected.

  However, the trapezoidal cross-sectional shape of the colored pattern layer B means that the colored layer is thick and thin, and the above-mentioned size is 100 μm × 100 μm and the inclination angle is 5 degrees, on the base 2.0 μm, In order to add 0 μm at one end and 8.7 μm at the other end, the thickness is 2.0 μm at the thin part and 10.7 μm at the thick part.

  Therefore, when the colored pattern layer B is formed with ink of one composition, a large “color” difference occurs between one end and the other end. Therefore, a method of dividing the region of 100 μm × 100 μm into 10 in the tilt direction and gradually decreasing the pigment or dye concentration as the thickness increases is used.

  Further, as described above, when the slope is formed by subdividing the 100 μm × 100 μm region into 10 μm × 10 μm, the “color” gradually increases from thin to thick within each small region. Although it is changing, a uniform “color” can be exhibited in the entire region of 100 μm × 100 μm.

  That is, the 10 μm × 10 μm “color” at one end of 100 μm × 100 μm (the “color” in the region changes) and the “color” at the other end of 10 μm × 10 μm (this region is also in the region) "Color" has changed), the change state of "color" inside is the same, and as a result, the "color" of these two regions can be said to be exactly the same. Since this division is fine, the observer can recognize that the entire “pattern b” exhibits one “color”.

  As “Pattern a”, “Pattern b”, and “Pattern c” in which they are combined, characters, figures, symbols, and combinations thereof can be used.

  In particular, it is suitable to be composed of a plurality of characters that are separated from each other (meaning that they are not in contact with each other), such as a “logo” used by brands and manufacturers. The colored pattern layer A and the colored pattern layer B may be alternately changed, or only “one character” of a plurality of characters is used as the colored pattern layer B, and all the remaining characters are used as the colored pattern layer A. May be.

  This is true if the difference in “visibility” occurs only in one part of “one character” (colored pattern layer A) and the other part does not change (colored pattern layer B). When judging the “change”, it is difficult for the person who determines the property to determine whether it is “intentionally provided to prevent forgery” or “simple printing unevenness”. This is because the reliability of the determination is ensured by determining whether the entire “one character” “changes uniformly” or “does not change uniformly”.

  Further, when the colored pattern layer A (“pattern a”) and the colored pattern layer B (“pattern b”) are formed in contact with each other and the combined pattern is “pattern c”, the “pattern c” The boundary line is generated, making it possible to compare the two areas on the boundary line, and to easily notice that there is some difference between the two areas.

  Moreover, when the colored pattern layer A and the colored pattern layer B partially overlap in the boundary line area, the boundary line area exhibits another “color”, and the reliability of the determination is greatly reduced. Will be allowed to.

  Furthermore, the size of the region occupied by the colored pattern layer A (“pattern a”) and the colored pattern layer B (“pattern b”) is the size of the above-mentioned “logo” (for example, a line representing a logo) The width is 2 mm.) Is sufficient, but in order to sufficiently bring out the effects of the respective layers described above, it is necessary to have a line width of at least 100 μm.

  This line width means, for example, “the width of one of the lines representing characters”, and if it is less than 100 μm, it is buried in the reflected light from the reflective magnetic thin film layer. It becomes difficult to interpret the change in color.

  As the transparent resin substrate, various thermoplastic resins, thermosetting resins, or ionizing radiation curable resins formed into a film shape or a sheet shape by an appropriate means can be used.

  The colored pattern layer A and the colored pattern layer B are respectively formed on one surface and the other surface of the transparent resin substrate as described above, and further, the colored pattern layer B and the colored pattern layer B are formed. A reflective magnetic thin film layer is formed on a region where the transparent resin base material is exposed but not formed so as to follow the surface shape thereof.

  As the reflective magnetic thin film layer, a single element thin film of Fe, Co, and Ni, an alloy thin film, a ferromagnetic metal thin film made of a compound thin film into which oxygen is introduced, or a ferromagnetic metal compound thin film can be used. .

  Further, a thin film for perpendicular magnetic recording using a Co—M—Pt alloy thin film (M is a single element or a plurality of elements other than Co or Pt) or a Co—Ni—Pt alloy thin film can also be used.

  Furthermore, a magneto-optical recording thin film made of an amorphous Tb—Fe—Co thin film or the like can be used.

  These reflective magnetic thin-film layers are formed by chemical methods such as vacuum deposition, electron beam superheated vacuum deposition, sputtering, plasma induction sputtering, physical plating methods such as ion plating, and CVD (chemical vapor deposition). Further, a wet method such as a plating method or an electroless plating method can be used as appropriate, and the thickness is 0.1 μm to 3.0 μm, preferably 0.1 μm to 0.5 μm. .

  If the thickness is less than 0.1 μm, it is difficult to obtain a sufficient reflectance, and if it exceeds 0.5 μm, the manufacturing cost increases.

  In particular, in the case of using a magneto-optical recording thin film, a so-called magnetic head (meaning a ring type magnetic head in a normal time recording system) is used for the colored pattern layer A or the colored pattern layer at the time of magnetic recording reading. Since it is not a magnetic recording reading method that contacts B, but a non-contact method, a level difference caused by the colored pattern layer A or the colored pattern layer B (for example, the surface of the transparent resin substrate and the surface of the colored pattern A) The magnetic recording and the magnetic reading can be performed at any position on the colored sheet and can be read and recorded without being influenced by the gap (meaning non-contact with the colored sheet itself). Is very stable and suitable. When performing magnetic recording and magnetic reading on the reflective magnetic thin film layer on the slope of the colored pattern layer B, the magnetic recording and magnetic reading optical system is not used for vertical writing & vertical reading, but vertical writing & oblique reading. Since it is possible to perform side reading or oblique writing & vertical reading, not only the design of the optical system can be facilitated but also the anti-counterfeiting property can be enhanced.

  When this reflective magnetic thin film layer is formed, the “step” present at the end of the colored pattern layer B (if it is formed with a thickness of 10 μm, it becomes a 10 μm step) is uneven adhesion of the reflective magnetic thin film layer. Further, due to the alteration of the material for the reflective magnetic thin film layer, the light reflectivity is uneven (noticeable), and the “clear difference (visibility difference)” is given to the step of the colored pattern layer A. In order to eliminate the occurrence, “gradation” is provided at 5 μm to 20 μm at the end (boundary region) of the “pattern b” region, and the same “gradation” is set to “pattern a”. It is also preferable to devise such as providing at the end portion in order to increase the anti-counterfeiting property. This “gradation” region is not considered as a region forming the above “slope”, but is positioned as a “peripheral region” surrounding the “slope”.

  As a method of applying the “gradation”, the thickness is gradually reduced to 10 μm, 5 μm, and 1 μm, or the region is set as a halftone dot region having an appropriate size of 1 μm in thickness. A method of suppressing visibility is preferable.

  Furthermore, when the reflective magnetic thin film layer is formed in a thin film toward the larger step of the colored pattern layer B using the oblique vapor deposition method, this “step” can be made less noticeable and more preferable. .

  In addition, when the observer visually recognizes the color of the “pattern a” region and the color of the “pattern b” region, simply “light reflected by the colored pattern layer A” and “once a transparent resin substrate , Light reflected by the colored pattern layer B, and again returning through the transparent resin substrate ”(in particular, the concealment of the colored pattern layer A and the colored pattern layer B is In order to reduce the color difference, it is desirable that the transparency of the transparent resin substrate is high, and the “haze”, which is an indicator of the transparency, is 10% or less. Furthermore, the “haze” is more preferably 1% or less.

  When the “haze” exceeds 10%, the visibility of the colored pattern layer B is reduced, and “color mist” is an element different from the three elements of “color” when determining “color”. This makes it difficult to make the “color” of “pattern a” and “pattern b” the same.

To keep the “haze” below 10%,
As the transparent resin base material, a transparent resin having a “haze” of 10% or less is used from the above-mentioned resins, and a dye added with 1% to 10% of a dye compatible with the resin is used. A transparent resin of 2% or less is used, and a resin obtained by adding 1% to 5% of a fine particle organic pigment or a fine particle inorganic pigment having good dispersibility to the resin is used.

  Further, the colored pattern layer B is formed on a part of the transparent resin base material, but an “interface” formed by the transparent resin base material and the colored pattern layer B is incident on the colored sheet or the like. When “light” passes (transmits), it is desirable that the “light” does not receive unnecessary reflection.

  In particular, when the colored pattern layer B is transparent, a relatively large amount of “light” incident on the colored sheet or the like passes (transmits) through the “interface”, so that the “light” passing therethrough is unnecessary reflection. It is important not to receive it. This is because not only light that reaches the colored pattern layer B is reduced by relatively reflecting "light" incident on the colored sheet and the like at this interface, but also passes through the colored pattern layer B, The reflected light reflected by the slope again blocks the light that passes through the colored pattern layer B and returns to the transparent resin substrate side (means that it is reflected at this interface and does not pass through the interface). This is because the certainty of authenticity determination is lowered. Therefore, the refractive index of a transparent resin base material and the refractive index of the colored pattern layer B are made the same, or the refractive index difference shall be 0.1 or less.

  When the refractive index difference is “0”, “light” is transmitted so that the “interface” itself does not exist, and even if there is a refractive index difference, the refractive index difference is “0.1”. In the case of “below”, unnecessary reflection on the “light” can be sufficiently suppressed, and the anti-counterfeiting property can be further enhanced.

  Moreover, it is set as a colored label by providing a solvent-type or water-type adhesive on the above-mentioned reflective magnetic thin film layer.

  Thereby, the application to a to-be-adhered body in various uses can be made easy.

  In order to suppress the influence on the colored pattern layer B under the reflective magnetic thin film layer, it is preferable to use an aqueous adhesive.

  Further, a solvent-based or water-based adhesive layer is provided on the reflective magnetic thin film layer of the colored sheet, and the colored pattern layer A is covered in the region of the colored pattern layer A, and the colored pattern layer A In a region where no transparent resin substrate is exposed, a transfer substrate covering the region where the transparent resin substrate is exposed is provided to obtain a colored transfer sheet.

  At this time, a substrate that can be easily peeled off from the transparent resin substrate or the colored pattern layer A is used as the transfer substrate.

  As a result, it can be easily applied to an object imparting anti-counterfeiting properties, and when the transfer substrate is peeled off after application, the remaining layer is very thin, so that the remaining layer is no longer peeled off. It can be physically difficult and can have high anti-counterfeiting properties.

  The order of forming each layer at this time is, for example, providing a colored pattern layer A on a transfer substrate, providing a transparent resin substrate so as to cover the colored pattern layer A, and forming a colored pattern thereon. After providing the layer B and providing the reflective magnetic thin film layer so as to cover them, the order of providing the adhesive layer on the reflective magnetic thin film layer can be adopted.

  In this case, it is also preferable to add a “peeling layer” having releasability from the transfer substrate on the transfer substrate.

  Further, when provided in this order, since the colored pattern layer A is embedded in the transparent resin base material, the transfer base material is peeled off after being transferred to the object imparting anti-counterfeit properties. Therefore, since the peeled surface is flush (meaning that the colored pattern layer A does not protrude), the anti-counterfeiting property is further improved.

  Furthermore, when performing magnetic recording and reading on the embedded surface while the magnetic head is in contact, it can run parallel to the surface of the transparent resin substrate, so that stable magnetic recording and reading are possible. This is preferable.

  When the colored sheet or the like of the present invention is observed under a fluorescent lamp, the “pattern a”, which is the region of the colored pattern layer A, is not the “colored pattern layer B” in a direction other than the “traveling direction of specularly reflected light on the slope”. The “pattern b”, which is the area of, appears to be the same “color” and can be recognized as “one pattern c” composed of one “color”.

  Furthermore, with respect to this colored sheet or the like, there is one illumination light source, the spatial arrangement of the illumination light source, colored sheet or the like and the observation position is changed, and the illumination light from the illumination light source is on the slope of the colored pattern layer B When the observation position is moved in the direction of specular reflection, the “color” changes only in “pattern b” when it exactly matches the arrangement, and the authenticity is confirmed easily and reliably. We were able to.

  In addition to this determination, the magnetic recording information recorded in advance on the reflective magnetic thin film layer by an appropriate magnetic recording method is read and determined using an appropriate magnetic reading method, thereby making it more reliable. The authenticity was confirmed. At this time, the magnetic recording information and “pattern a” or “pattern b”, and further, “pattern c” represent the same information or display related information, thereby improving forgery prevention It is also suitable to make it.

  Moreover, the same effect was able to be confirmed in the state which affixed the coloring label of this invention to the appropriate to-be-adhered body.

  Furthermore, the same effect could be confirmed even in the state transferred to an appropriate object using the colored transfer sheet of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
It is sectional drawing of the coloring sheet | seat H which shows one Example of this invention. It is sectional drawing of the coloring label H 'which shows another Example of this invention. It is sectional drawing of the coloring transfer sheet H '' which shows another Example of this invention.

(Transparent resin base material)
As a resin material used for the transparent resin substrate 1 of the colored sheet H of the present invention, various thermoplastic resins, thermosetting resins, or ionizing radiation curable resins can be used. Thermoplastic resins include acrylic ester resins, acrylamide resins, nitrocellulose resins, or polystyrene resins. Thermosetting resins include unsaturated polyester resins, acrylic urethane resins, epoxy-modified acrylic resins, and epoxy-modified unsaturated resins. A polyester resin, an alkyd resin, a phenol resin, etc. are mentioned. (See Figure 1)
These thermoplastic resins and thermosetting resins can be used alone or in combination of two or more. One or more of these resins may be cross-linked using various isocyanate resins, or various curing catalysts, for example, metal soap such as cobalt naphthenate or zinc naphthenate may be blended. Or peroxide such as benzoyl peroxide and methyl ethyl ketone peroxide for initiating polymerization with heat or ultraviolet light, benzophenone, acetophenone, anthraquinone, naphthoquinone, azobisisobutyronitrile, or diphenyl sulfide good.

Examples of the ionizing radiation curable resin include epoxy acrylate, urethane acrylate, acrylic-modified polyester, etc., for the purpose of introducing a crosslinked structure into such an ionizing radiation curable resin or adjusting the viscosity, A monofunctional monomer, a polyfunctional monomer, or an oligomer may be blended and used. (See Figure 1)
When a thermosetting resin or ionizing radiation curable resin is used, it is cured by heating or irradiation with ionizing radiation while the uncured resin is kept in close contact with the mold surface having a smooth surface, and then peeled off after curing. By this, the cured film-like or sheet-like transparent resin substrate 1 can be obtained.

  The thickness can be appropriately selected within the range of 1.0 μm to 250 μm. In particular, when magnetic recording is performed using the ring-type magnetic head while contacting the surface of the colored sheet H, the distance between the magnetic head and the reflective magnetic thin film layer 4 is taken into consideration, and is 1.0 μm to 10 μm. It is preferable to do. In particular, when the recording density is set to 420 bpi (meaning bits / inch) or more, it is necessary to set the recording density to 10 μm or less in order to realize stable magnetic recording and magnetic reading. However, this restriction does not apply when performing magnetic recording and magnetic reading using the perpendicular magnetic recording method or the magneto-optical recording method.

  Moreover, the haze of the transparent resin base material 1 can be 10% or less by selecting and using the transparent material whose haze is 10% or less from the resin material used for the above-mentioned transparent resin base material. .

(Colored pattern layer A or colored pattern layer B)
In the colored sheet H of the present invention, the “colored pattern layer A” 2 is formed on a part of one surface of the transparent resin substrate 1, and the “colored pattern layer” is formed on a part of the other surface of the transparent resin substrate 1. B "3 is formed. (See Figure 1)
As a pigment used for “colored pattern layer A” 2,
Organic pigments such as quinacridone red / magenta, anthraquinone red / yellow, polyazo yellow, benzimidazolone yellow / orange, phthalocyanine pigments such as copper phthalocyanine blue (α type, β type), copper phthalocyanine green, different types Metallic phthalocyanine blue, selenium blue, azo pigments, soluble azo pigments (carmine 6B, permanent red 2B, etc.), insoluble azo pigments (disazo, monoazo, etc.), insoluble polycyclic pigments (red: quinacridone, perylene, Diketopyrrolopyrrole, orange: perinone, perylene, diketopyrrolopyrrole, yellow: quinophthalone, isoindolinone, green: phthalocyanine, blue: phthalocyanine, indanthrene, purple: dioxazine, etc., insoluble lake pigment (red: lake red) C, Wo Chun red, etc.).

  In particular, insoluble azo pigments, insoluble polycyclic pigments, and insoluble lake pigments are suitable because they have strong coloring power, a clear hue, and high transparency.

  Examples of inorganic pigments include complex oxide pigments, fine particle complex oxide pigments, bitumen, and hybrid pigments. In addition, petals, molybdenum red, cadmium red, red lead (and above, red), and yellow lead. (Red mouth), molybdenum orange (orange), cadmium orange (orange), ultramarine blue, Prussian blue, cobalt blue, cerulean, manganese blue (above, blue), amber (brown), yellow Lead, cadmium yellow, titanium yellow, yellow iron oxide (above, yellow), chromium oxide, cobalt green, viridian, peacock (above, green), Mars purple, cobalt violet, manganese violet (above, purple.), Etc. An extender pigment, a metal powder pigment, etc. are used.

  The normal particle diameter of the pigment can be used, but in order to ensure the transparency of the “colored pattern layer A” 2, a pigment with a particle diameter of 0.01 to 0.1 μm (fine pigment) is used. To do. However, those having this particle size are liable to agglomerate and need to be redispersed. The amount to be added is determined by the balance with the thickness to be formed in the forming method to be used, but usually 1% to 20% is preferably added, and it is dissolved in an appropriate solvent or water to form a thickness of 2 to 20 μm. .

  The forming method is such that the flatness of the “colored pattern layer A” 2 is 0.1 μm to 0.5 μm in surface roughness Ra, so that a stainless screen printing method, an intaglio method, a resist processing method, and further a colored layer A transfer system is preferred.

  Furthermore, in order to suppress the “haze” of the “colored pattern layer A” 2 to 10% or less, a transparent resin having a “haze” of 2% or less is used. A fine particle inorganic pigment added at 1% to 5% is used.

  The acrylic resin (haze 2% or less), polycarbonate resin (2% or less), etc. are added with 1% to 5% of the fine particle pigment, and a solid content is obtained using a solvent system having low solubility in the transparent resin substrate 1. 30% to 50% is formed.

  At this time, a solvent system having a relatively slow drying rate (boiling point 100 ° C. or higher, preferably 130 ° C. or higher) is mixed with 10% to 20% of the solvent component. It is also suitable to promote leveling of the surface of layer A "2.

  The dyes used in the “colored pattern layer A” 2 include natural dyes and synthetic dyes, direct dyes such as Direct Red 2 and Direct Red 28 (Congo Red), acidic dyes such as Orange 2, and bases such as methylene blue. Dyes, cationic dyes, mordant dyes such as alizarin, acidic mordant dyes such as modern black 3, vat dyes such as sulfur dyes, indigo, naphthol dyes, disperse yellow 7, disperse orange 3, disperse threads 17, 1 Disperse dyes such as 1,4-diaminoanthraquinone and reactive dyes such as Reactive Red 1 can be used.

  These dyes can be dissolved in an appropriate resin to obtain an ink for the colored pattern layer A. However, by dissolving in a highly compatible transparent resin, a clearer hue and higher transparency can be obtained. be able to.

  The addition amount of the dye is 1% to 30%. In addition, when a dye system is used, the lens flatness and surface smoothness during formation are superior to that of a pigment system, so that a “flat surface” can be realized.

  The solid content and the forming method are the same as in the pigment system.

  Furthermore, in order to suppress the “haze” of the “colored pattern layer A” 2 to 10% or less, a transparent resin having a “haze” of 5% or less is used, and a dye compatible with the resin is added in an amount of 1% to 10%. % Added.

  The resin used for “colored pattern layer A” 2 is acrylic resin, polyester resin, polyurethane resin, vinyl chloride resin, vinyl acetate resin, vinyl chloride-vinyl acetate copolymer resin, polyamide resin. Examples thereof include resins, melamine resins, phenol resins, and the like, and those having good adhesion to the transparent resin substrate 1 and those having good dispersibility and compatibility with pigments and dyes can be used.

  Furthermore, in addition to these pigments and dyes, in order to adjust the “color”, transparent extender pigments such as calcium carbonate having a particle diameter of 0.1 μm to 1.0 μm, and having light scattering properties while having transparency. High refractive index transparent resin particles such as silicon powder can also be used.

  These transparent extender pigments and transparent resin particles have an effect of suppressing the light transmittance of the “colored pattern layer A” 2, and the addition amount thereof is set to a solid content ratio of 1% to 10%. If it is less than 1%, the added effect does not appear, and if it exceeds 10%, the leveling property as an ink and the dispersibility are adversely affected.

  Examples of the resin, pigment, and dye used in the “colored pattern layer B” 3 include those described above that have good adhesion to the reflective magnetic thin film layer 4 and the transparent resin substrate 1, and pigments and dyes. Those having good dispersibility and compatibility can be used, and when the same transparency as “colored pattern layer A” 2 is imparted, the blending is the same as in “colored pattern layer A” 2, but the hiding property is In the case of applying, a pigment such as titanium white or lead white having excellent concealability is used.

  In addition, the solvent system and the formation method are selected so that the shape and properties of the transparent resin substrate 1 are not affected during the formation. In particular, in the formation process, the surface of the transparent resin substrate 1 in the region other than the region for forming the “colored pattern layer B” 3 (region of “pattern b”) is physically or chemically contacted. It is desirable to have no method at all.

  Further, in the region where the “colored pattern layer B” 3 is provided (interface between the transparent resin substrate 1 and “colored pattern layer B” 3), the reflectance at the interface is almost “0%”. Therefore, the refractive index of the resin material used for the transparent resin substrate 1 and the refractive index of the resin used for the “colored pattern layer B” 3 are the same or the difference in refractive index is 0.1. The resin used for the “colored pattern layer B” 3 is selected as follows.

  For example, various thermoplastic resins, thermosetting resins, or ionizing radiation curable resins can be used. As the thermoplastic resins, acrylic ester resins (refractive index n = 1.47), acrylamide resins (n = 1.50), nitrocellulose resin (n = 1.54), vinyl acetate resin (n = 1.47), polystyrene resin (n = 1.60) or the like, Unsaturated polyester resin (n = 1.64), urethane resin (n = 1.60), epoxy-modified acrylic resin (n = 1.55), epoxy-modified unsaturated polyester resin (n = 1.64), alkyd resin (N = 1.54) or phenol resin (n = 1.60).

  These thermoplastic resins and thermosetting resins can be used alone or in combination of two or more, and may be crosslinked using various isocyanate resins, or various curing catalysts such as cobalt naphthenate. Or a metal soap such as zinc naphthenate, or a peroxide such as benzoyl peroxide or methyl ethyl ketone peroxide for initiating polymerization with heat or ultraviolet light, benzophenone, acetophenone, anthraquinone, naphthoquinone, azobisiso Butyronitrile or diphenyl sulfide may be blended.

  Examples of the ionizing radiation curable resin include epoxy acrylate (n = 1.55), urethane acrylate (n = 1.54), acrylic modified polyester (n = 1.64), and the like. For the purpose of introducing a crosslinked structure into the ionizing radiation curable resin or adjusting the viscosity, a monofunctional monomer, a polyfunctional monomer, an oligomer, or the like may be blended and used.

  Furthermore, in consideration of the environment, a biodegradable plastic can be used.

Of course, it is also preferable to use these resins for the “colored pattern layer A” 2 to have high durability and physical properties.
As a method of forming the slope of the “colored pattern layer B” 3, the same method as the method of forming the “colored pattern layer A” 2 can be used, but the slope angle of the slope should be 5 degrees to 40 degrees. In order to realize the surface roughness Ra of 0.1 μm to 1.0 μm, which is flatness, it is preferable to use an intaglio method, a colored layer transfer method, and a colored layer molding method.

  The intaglio printing method has a bottom surface of the intaglio as an inclined surface, can be printed in a free pattern with a thickness of about 100 μm, and has high print shape reproducibility.

  In the colored layer transfer method, a colored layer corresponding to “colored pattern layer B” 3 is provided in advance on a transfer substrate, aligned and superimposed on the transparent resin substrate 1, and heated from above the transfer substrate. In addition, pressure is applied, and only the colored layer portion is transferred (transferred) onto the transparent resin substrate 1 by utilizing the adhesive property of the colored layer itself. Since the surface that becomes the inclined surface after the transfer is a surface in which the surface on the transfer substrate is copied, high flatness and high reproducibility can be imparted.

In the colored layer molding method, a mold similar to the intaglio is prepared in advance by using a method such as adjustment of the exposure amount of a photoresist, and an ionizing radiation curable resin is embedded in the concave portion of the mold to form a transparent resin base. The “colored pattern layer B” 3 can be formed with high accuracy by overlapping the material 1 so as to be in contact with each other and irradiating ionizing radiation and then removing the mold. Here, the adjustment of the exposure amount of the photoresist is not the usual “ON / OFF exposure to determine whether or not to expose”, but subdivides one pattern, and gradually adjusts the fine area from the end of the pattern. A stepwise slope is formed after increasing the exposure amount and developing the photoresist. At this time, if the step of one step of the staircase is less than 0.1 μm, it corresponds to the “slope” of the present invention. This can be realized by, for example, an electron beam drawing method using an electron beam resist. (The forming method is not shown.)
In each method, the surface of the intaglio, the transfer substrate surface, and the bottom portion of the mold corresponds to the slope of the “colored pattern layer B” 3, and this surface has a surface roughness Ra of 0. It is essential to have a flat surface of 1 μm to 1.0 μm.

  Furthermore, these forming methods can also be suitably used when the “colored pattern layer B” 3 is formed by dividing the “pattern b” into fine regions.

  In any case, in order to stabilize magnetic recording and magnetic reading on the reflective magnetic thin film layer 4, the materials used for the "colored pattern layer A" 2 and the "colored pattern layer B" 3 are non-magnetic. Is preferred.

(Reflective magnetic thin film layer)
In the colored sheet H of the present invention, in the region where the “colored pattern layer B” 3 is provided on the transparent resin substrate 1 so as to follow and follow the transparent resin substrate 1, The reflective magnetic thin film layer 4 is formed so as to contact and follow the “colored pattern layer B” 3. (See Figure 1)
Since this reflective magnetic thin film layer 4 needs to reflect incident light, it is particularly limited as long as it is a magnetic thin film having a refractive index higher than that of the transparent resin substrate 1 and the “colored pattern layer B” 3. Not. (In general, a layer made of metal has a complex refractive index, and in this case, the value of its real part is compared.)
The reflective magnetic thin film layer 4 may be a single thin film such as Fe, Co, and Ni, or Co—Fe, Co—Ni, Fe—Ni, Co—Fe—Ni, Co—Cr, Co—Cu, Co—. Au, Co-Y, Co-La, Co-Pr, Co-Gd, Co-Sm, Co-Pt, Co-Fe-Cr, Co-Fe-Ni-Cr, Fe-Rh, Fe-Cu, Fe- A ferromagnetic alloy thin film such as Cr, Ni—Cu, Mn—Bi, Mn—Sb, Mn—Al, or the like can be used.

  Furthermore, a ferromagnetic metal thin film, a ferromagnetic metal compound thin film, or the like that is a compound thin film into which oxygen is introduced can be used. For example, Co—Ni—O or Co—O can be used.

  Further, a thin film for perpendicular magnetic recording using a Co—M—Pt alloy thin film (M is a single element or a plurality of elements other than Co or Pt) or a Co—Ni—Pt alloy thin film can also be used. For example, in Co—Ni—Pt, Co is 10 to 35%, Ni is 20 to 55%, and the rest is Pt.

  Of course, those in which these thin films are formed in multiple layers are also suitable.

  Furthermore, a magneto-optical recording thin film made of an amorphous Tb—Fe—Co thin film or the like can be used. In order to enhance the magneto-optical effect (meaning Kerr effect or Faraday effect) of this thin film, a multilayer structure with a nonmagnetic metal thin film layer is used. For example, an Mo thin film and an SiC thin film as a protective layer on an Al reflective layer The three-layer structure is also suitable.

In addition, a thin film for magneto-optical recording formed by laminating a Bi thin film, a Mn thin film, a Te thin film, and SiO ₂ as a protective layer in this order and subjected to an annealing treatment at 200 ° C. for 4 hours is also used as a car. It is suitable because the effect is large (Kerr rotation angle 0.7 degree) and the reflectance is high (40%).

  Regarding the Kerr effect as the performance of the magneto-optical recording thin film, it is preferable that the rotation angle is 0.5 degrees or more and the reflectance is 30% or more in consideration of certainty at the time of authenticity determination.

  These reflective magnetic thin film layers 4 are formed by a vacuum deposition method, an electron beam overheating method vacuum deposition method, and a physical formation method such as an oblique deposition method, a sputtering method, a plasma induction sputtering method, or an ion plating method using them. Further, chemical formation methods such as CVD (Chemical Vapor Deposition) methods, and wet methods such as plating methods and electroless plating methods can also be used as appropriate, and the thickness is 0.1 μm to 3.0 μm, Preferably, the thickness is 0.1 μm to 0.5 μm.

  If the thickness is less than 0.1 μm, it is difficult to obtain a sufficient reflectance, and if it exceeds 0.5 μm, the manufacturing cost increases.

  The magnetic properties of the reflective magnetic thin film layer 4 include a residual magnetic flux density of 0.1 T to 2.5 T (Tesla), preferably 0.1 T to 1.0 T, and a coercive force of 30 A / m to 1000 A / m, preferably Is 100 A / m to 500 A / m. In particular, the squareness ratio is 0.5 or more.

  As a magnetic recording apparatus including a magnetic head and an optical system for magnetically recording predetermined information on the reflective magnetic thin film layer 4 and magnetic reading, a generally used magnetic recording apparatus is appropriately used. Can be used.

  The magnetic recording density at that time is appropriately adopted within the range of 10 bpi to 10000 bpi. Further, the magnetic recording area (not shown; a location corresponding to the portion where the reflective magnetic thin film layer 4 is subjected to magnetic recording in the colored sheet H or the like; an area determined by the magnetic recording width and the magnetic recording length). In the colored sheet H, the colored label H ′, and the colored transfer sheet H ″ (see FIGS. 1 to 3), in a region corresponding to a portion where the “colored pattern A” 2 and the “colored pattern B” 3 are not provided. It may be provided, or may be provided in an area corresponding to a portion where they are provided. However, the state of magnetic recording and magnetic reading may be different in an area where “coloring pattern A” 2 is provided, an area where “coloring pattern B” 3 is provided, or an area where they are not provided. (For example, even if the magnetic recording method is the same, the magnetic characteristics after recording and the required magnetic reading method may be different.) It is preferable to perform reading. However, it does not exclude applying a plurality of the above-described areas in order to further improve the anti-counterfeiting property.

  In addition, in the colored label H ′ (see FIG. 2) and the colored transfer sheet H ″ (see FIG. 3), magnetic recording may be performed after the colored label H ′ and the colored transfer sheet H ″ are formed, It is also possible to appropriately make a determination by applying magnetic recording after pasting them or after forming a transfer, and then reading them magnetically.

(Adhesive layer)
As the pressure-sensitive adhesive layer 5 used in the colored label H ′ (see FIG. 2) of the present invention, any conventionally known solvent-based and water-based pressure-sensitive adhesives can be used. For example, vinyl acetate resin, acrylic resin, vinyl acetate-acrylic copolymer, vinyl acetate-vinyl chloride copolymer, ethylene-vinyl acetate copolymer, polyurethane resin, rubber resin such as natural rubber, chloroprene rubber, etc. Can be mentioned. In order to make the material composition naturally friendly, in particular, latex mainly composed of natural rubber, or modified ones thereof, especially natural rubber latex obtained by graft polymerization of styrene and methyl methacrylate on natural rubber, etc. Those made from natural materials may be used.

  The coating amount of the pressure-sensitive adhesive layer 5 is generally about 8 to 30 g / square meter (solid content), and is applied and dried by a conventionally known method, that is, a gravure coat, roll coat, comma coat or the like. Thus, the pressure-sensitive adhesive layer 5 is formed. The adhesive strength of the pressure-sensitive adhesive layer 5 is the peel strength between the reflective magnetic thin film layer 4 and the pressure-sensitive adhesive layer 5, and is in the range of about 0.1 to 1 kg in the peeling method according to JIS Z0237 at 180 degrees. Is desirable. Of course, even higher peel strengths are suitable for the purposes of the present invention.

  The colored label H ′ of the present invention is attached to a desired position of an object to be counterfeited (adhered body) so that the pressure-sensitive adhesive layer 5 is in contact with the pressure layer, and is pressed onto the object easily. Can be applied.

(Transfer substrate or adhesive layer)
The transfer substrate 6 used in the colored transfer sheet H ″ (see FIG. 3) of the present invention can be made thin, and the mechanical strength and the colored transfer sheet H ″ can be manufactured. What has the solvent resistance and heat resistance suitable for the process and process at the time of carrying out, and also has peelability from the transparent resin base material 1 and "colored pattern layer A" 2 (transfer base material 6 Means that it can be easily peeled off.)

  Since it depends on the purpose of use, it is not limited, but a film-like or sheet-like plastic is preferable.

  For example, various plastic films such as polyethylene terephthalate (PET), polycarbonate, polyvinyl alcohol, polysulfone, polyethylene, polypropylene, polystyrene, polyarylate, triacetyl cellulose (TAC), diacetyl cellulose, and polyethylene / vinyl alcohol can be exemplified. .

  It is also preferable that one surface of the transfer substrate 6 is subjected to a surface inactivation treatment such as silicon treatment to suppress the peel strength of the transfer substrate 6 to a desired value.

  The thickness of the transfer substrate 6 is usually 5 to 100 μm, but is preferably 12 to 25 μm in view of proper handling as a transfer sheet.

  Of course, in consideration of environmental influences, a transparent biodegradable plastic film or sheet can also be used. As a chemical synthesis system, lactone resins: ε-caprolactone, 4-methylcaprolactone, 3, 5, 5 -Trimethylcaprolactone, 3,3,5-trimethylcaprolactone, β-propiolactone, γ-butyrolactone, δ-valerolactone, a homopolymer of enanthlactone or a copolymer of two or more of these monomers, a mixture thereof, polycaprolactone Or, polybutylene succinate resin: polybutylene succinate adipate, a mixture of polybutylene succinate and polycaprolactone, a mixture of polybutylene succinate and polybutylene succinate adipate, polybutylene succinate adipate A polyester resin synthesized from a low molecular weight aliphatic dicarboxylic acid and a low molecular weight aliphatic diol, such as succinic acid and butane A combination of diol, ethylene glycol, oxalic acid and neopentyl glycol, butanediol, ethylene glycol, or a mixture of modified polyvinyl alcohol, aliphatic polyester resin and starch, or low molecular weight aliphatic polyester A polymer obtained by adding a group isocyanate and polymerizing it is preferred.

  In addition, natural products such as animal natural materials such as gelatin, plant natural materials such as cellulose, etc., starch fatty acid esters, starch chitonan and cellulose, etc., or microorganism production systems such as polyhydroxybutyrate and polyester System, furthermore, P (3HB-CO-4HB) based on 3-hydroxypropionic acid, 4-hydroxybutyric acid or γ-butyrolactone as a carbon source, or propionic acid or valeric acid as a carbon source. P (3HB-CO-3HV) or the like is preferable.

  Further, a release layer (not shown) having peelability from the transparent resin substrate 1 and the “colored pattern layer A” 2 may be provided on the transfer substrate 6. It is desirable that it has a property of peeling from the base material 6 for use, has excellent adhesion to the transparent resin base material 1 and the “colored pattern layer A” 2 and is excellent in durability, such as an acrylic resin, a polyester resin, Select from polyurethane resin. It is also preferable to add silicon resin fine particles having transparency and durability.

Then, an adhesive layer 7 is provided on the reflective magnetic thin film layer 4. (See Figure 3.)
The adhesive used for the adhesive layer 7 is for securing adhesion to an object for preventing forgery, and therefore has good adhesiveness with the reflective magnetic thin film layer 4 and the like, and is an object to be transferred. Those that can be firmly bonded to the object are preferred. Specific examples include vinyl chloride resins, vinyl acetate resins, vinyl chloride-vinyl acetate copolymer resins, acrylic resins, polyester resins, polyurethane resins, polyamide resins, and rubber-modified products. Appropriately selected from these can be selected and used. These are used alone or in a mixed system of two or more, and further added with a hard resin, a plasticizer, or other additives as necessary. The formation thickness, the formation method, and the like are appropriately selected.

  The colored transfer sheet H ″ of the present invention is overlaid so that the adhesive layer 7 is in contact with the object, heated from 100 ° C. to 200 ° C. from the transfer substrate 6 side, and 1 g / square millimeter to 100 g / square millimeter. It can be easily applied to an object for preventing counterfeiting by adhering to the object by pressing and then peeling only the transfer substrate 6.

  EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention further in detail, it is not limited to this. In addition, except a solvent, each composition of each layer is a mass part of solid content conversion.

Example 1
As a resin material constituting the transparent resin base material 1, a transparent melamine resin having a thickness of 10 μm formed on a sheet by an extrusion method was used. (See Figure 1)
On one side of this transparent resin base material 1, “colored pattern layer A” 2 having the following composition is formed using a stainless screen method, and a red character (logo) “BR ND” having a thickness of 5.0 μm is formed. did.

The size of each character is 5 mm x 5 mm, and a design that includes a single blank and repeats a five-character length of "4 characters + 1 blank" and is placed on the top and bottom (in the top-to-bottom direction). Was provided with a 10 mm gap and a 3 mm gap in the left-right direction. The line width of the characters “BR ND” was approximately 300 μm. (This corresponds to “colored pattern layer A” 2 provided on a part of one surface of transparent resin substrate 1, and this design corresponds to “pattern a”.)
The drying conditions were moderate, and the smoothness of the character surface was improved. The flatness of the “colored pattern layer A” 2 at this time was 0.5 μm in terms of surface roughness Ra.
・ <Composition for colored pattern layer A>
Melamine resin 30 parts by mass Phthalocyanine-based dye 10 parts by mass Toluene 30 parts by mass Isopropyl alcohol 2 5 parts by mass Butyl cellosolve 5 parts by mass Further, on the other surface of the transparent resin substrate 1, “colored pattern layer B” having the following composition 3 was formed at an inclination angle of 10 degrees in the line width direction (width 300 μm) of characters using an intaglio printing method. (This inclination angle was set to 10 degrees with respect to the other surface of the transparent resin substrate.) At this time, the width of 300 μm was divided into 10 and the character line was divided into 30 μm-wide strip-like regions. An inclination with an inclination angle of 10 degrees was provided in the width direction of the strip-shaped region.
・ <Composition for colored pattern layer B>
Melamine resin 30 parts by weight Phthalocyanine dye 10 parts by weight Optical brightener 2 parts by weight Toluene 30 parts by weight Isopropyl alcohol 2 5 parts by weight Butyl cellosolve 3 parts by weight One end of the strip-like region of “Colored pattern layer B” 3 The thickness at the other end was 30 μm, and the thickness at the other end 30 μm was 9.6 μm. Therefore, the “colored pattern layer B” 3 was formed by repeatedly forming strip-shaped regions having a surface with an inclination angle of 30 degrees. (Not shown. FIGS. 1 to 3 show an example having one slope as “colored pattern layer B” 3.)
As a result, red letters (logo) “A” having an average thickness of 7.0 μm were formed.

At this time, this logo “A” is composed of four blanks and one letter, and the position of “A” is located exactly in the center of (logo) “BR ND” of “colored pattern layer A” 2. Arranged. The line width of the letter “A” was also about 300 μm. (This corresponds to the “colored pattern layer B” 3 provided on a part of the other surface of the transparent resin substrate 1, and this design corresponds to the “pattern b”.)
(See Figure 1)
Further, the degree of vacuum is 7.8 × 10 ⁻³ Pa using an electron beam heating type vacuum vapor deposition machine manufactured by ULVAC so as to follow and contact the transparent resin substrate 1 and the “colored pattern layer B” 3. In addition, a Co—Ni thin film having a thickness of 100 nm is formed using an alloy of Co / Ni = 7: 3 at an oblique incidence angle of 30 degrees, and an aluminum nitride thin film (nonmagnetic material) is formed thereon. The process of forming with a thickness of 30 nm was repeated three times to form a reflective magnetic thin film layer 4 having a multilayer structure, and a colored sheet H of Example 1 was obtained. (See FIG. 1. Multi-layer configuration not shown.)
The magnetic properties of the reflective magnetic thin film layer 4 at this time were a coercive force of 70 A / m, a residual magnetic flux of 0.8 T (Tesla), and a squareness ratio of 0.7.

  When this colored sheet H was observed from the transparent resin substrate 1 side under illumination of ten fluorescent lamps installed at equal intervals on the ceiling in the office room, the colored sheet H was observed from the front. The red letters “BR ND” (“pattern a”) receive the reflected light from the reflective magnetic thin film layer 4 from behind, and the red letters “A” (“pattern b”) Recognizing that the “color” of the red letter “BR ND” and the “color” of the red letter “A” are “identical” by providing a composition with improved brightness at a thickness of 1.4 times. It was recognized as if the letters were combined and “one logo” “BRAND” consisting of “one red color” was printed (“pattern a” and “pattern b” had the same color. Therefore, "BRAND" that is "pattern c" is integrated. Meant to be visually recognized as.).

At this time, it could be recognized that the red character line of “A”, which is “pattern b”, had a uniform “color”. (Not shown)
Then, only one of the fluorescent lamps is turned on for the colored sheet H, and the incident light from the fluorescent lamp to the colored sheet H is regularly reflected by the slope of the “colored pattern layer B” 3. When the colored sheet H was observed, only the red letters “A” (“pattern b”) became brighter, and the authenticity could be determined. (Not shown)
Further, with respect to the colored sheet H, from the transparent resin base material 1 side, a ring type magnetic head mounted magnetic recording / reading device is used, and between the “BRAND...” Character string and the “BRAND. Magnetic recording of predetermined information with a recording density of 210 bpi (bits / inch), a recording width of 2 mm, and a recording length of 12.7 mm was performed on (the area of 10 mm in the vertical direction).

  After that, using the same device, magnetically read the information magnetically recorded from that area of the colored sheet H, compare the read information with the predetermined information to confirm that it is the same, and verify its authenticity. Judged.

  From the above, it seems that the colored sheet H of the present invention has a high anti-counterfeit property.

(Example 2)
Acrylic resin (haze 2%) is used as the resin material constituting the transparent resin substrate 1, and the ink composition having the following composition is used for the "colored pattern layer A" 2 and "colored pattern layer B" 3 Was a colored sheet H of Example 2 in the same manner as Example 1. (See Figure 1)
・ <Composition for colored pattern layer A>
Acrylic resin 30 parts by weight Relaid C fine particle organic pigment 1 part by weight Toluene 30 parts by weight Isopropyl alcohol 3 4 parts by weight Butyl cellosolve 5 parts by weight <Colored pattern layer B composition>
Melamine resin 30 parts by weight Reked C fine particle organic pigment 1 part by weight Optical brightener 2 parts by weight Toluene 30 parts by weight Isopropyl alcohol 3 4 parts by weight Butyl cellosolve 3 parts by weight This colored sheet H was evaluated in the same manner as in Example 1. However, good evaluation results similar to those of Example 1 were obtained except that the change of “color” (blue) of “colored pattern layer A” 2 was more clearly recognized.

(Example 3)
As a resin material constituting the transparent resin substrate 1, an acrylate resin (refractive index n = 1.47) is used, and "colored pattern layer A" 2 and "colored pattern layer B" 3 have the following ink composition: A colored sheet H of Example 3 was obtained in the same manner as Example 1 except that the product was used. (See Figure 1)
・ <Composition for colored pattern layer A>
Acrylic ester resin (refractive index n = 1.47) 30 parts by mass Phthalocyanine dye 10 parts by mass Toluene 30 parts by mass Isopropyl alcohol 2 5 parts by mass Butyl cellosolve 5 parts by mass <Composition for colored pattern layer B>
Acrylic ester resin (refractive index n = 1.47) 30 parts by weight Phthalocyanine dye 10 parts by weight Optical brightener 2 parts by weight Toluene 30 parts by weight Isopropyl alcohol 2 5 parts by weight Butyl cellosolve 3 parts by weight When evaluated in the same manner as in Example 1, the reflection at the interface between the “colored pattern layer B” 3 and the transparent resin substrate 1 in the region of the “colored pattern layer B” 3 disappeared (changed the observation angle). However, the same evaluation results as those in Example 1 were obtained except that the “color” did not change.

Example 4
Colored sheet H of Example 4 in the same manner as Example 3 except that the following composition was used as the ink composition for “Colored pattern layer A” 2 and “Colored pattern layer B” 3 of Example 3. Got. (See Figure 1)
・ <Composition for colored pattern layer A>
Epoxy-modified acrylic resin (n = 1.55) 30 parts by mass Phthalocyanine dye 10 parts by mass Toluene 30 parts by mass Isopropyl alcohol 2 5 parts by mass Butyl cellosolve 5 parts by mass <Composition for colored pattern layer B>
Epoxy-modified acrylic resin (n = 1.55) 30 parts by weight Phthalocyanine dye 10 parts by weight Optical brightener 2 parts by weight Toluene 30 parts by weight Isopropyl alcohol 2 5 parts by weight Butyl cellosolve 3 parts by weight When evaluated in the same manner as in Example 1, it was felt that reflection at the interface between the “colored pattern layer B” 3 and the transparent resin substrate 1 in the region of the “colored pattern layer B” 3 disappeared (transparent resin Even if the observation angle is adjusted to the regular reflection angle of the other surface of the substrate 1, the “color” does not change relatively. .

(Example 5)
On the reflective magnetic thin film layer 4 of Example 1, an adhesive layer 5 having the following composition was formed with a thickness of 30 μm by using a silk screen printing method to obtain a colored label H ′ of Example 4. (See Figure 2.)
・ <Adhesive composition>
Vinyl acetate-acrylic copolymer 30 parts by mass Toluene 20 parts by mass Vinyl acetate 20 parts by mass Isopropyl alcohol 2 5 parts by mass Butyl cellosolve 5 parts by mass Subject to impart anti-counterfeit property to the adhesive layer 5 of this colored label H ′ When placed on the surface of the object and applied with pressure, the colored label H ′ was easily attached to the surface of the object and observed from the transparent resin substrate 1 side under an indoor fluorescent lamp. Example 1 The same good evaluation results were obtained.

  Furthermore, after sticking the colored label H ′ to the surface of the object, the same magnetic recording and magnetic reading as in Example 1 are performed from the transparent resin substrate 1 side. As a result, the same good evaluation as in Example 1 is performed. The result was obtained.

(Example 6)
25 μm polyethylene terephthalate is used as the transfer substrate 6, and “colored pattern layer A” 2 of Example 1 is formed on one surface thereof using the same method. A composition having the following composition is formed to a thickness of 10 μm using a gravure coating method so as to cover the surface of A ″ 2, and the “colored pattern layer B” 3 of Example 1 is similarly formed thereon. It formed so that it might become arrangement. (See Figure 3.)
・ <Transparent resin substrate composition>
Melamine resin 30 parts by mass Toluene 40 parts by mass Isopropyl alcohol 10 0 parts by mass Ethyl acetate 20 parts by weight The reflective magnetic thin film layer 4 is formed in the same manner as in Example 1, and an adhesive having the following composition is formed thereon. The layer 7 was formed with a thickness of 10 μm using a gravure coating method to obtain a colored transfer sheet H ″ of Example 6. (See Figure 3.)
・ <Adhesive composition>
Vinyl acetate-acrylic copolymer 20 parts by mass Toluene 40 parts by mass Vinyl acetate 40 parts by mass The adhesive layer 7 surface of this colored transfer sheet H ″ is placed in contact with the surface of the object imparting anti-counterfeiting properties, After heating and pressing at 120 ° C. and 10 g / square millimeter from the transfer substrate 6 side, the transfer substrate 6 is peeled off, and a transfer portion (colored transfer sheet H ′) is formed on the object. The part from which the transfer substrate 6 was peeled off from the configuration ') was transferred. (Not shown)
The transferred portion could no longer be peeled off from the object and obtained the same good evaluation as in Example 1 except that it was considered to have high anti-counterfeiting properties.

  Further, after the colored label H ″ is transferred to the surface of the object, magnetic recording and magnetic reading similar to those in Example 1 are performed from the upper side of the transferred portion. As a result, good evaluation results similar to those in Example 1 are obtained. Got.

(Example 7)
As a resin material constituting the transparent resin base material 1, a material in which a transparent melamine resin having a thickness of 50 μm was formed on a sheet by an extrusion molding method was used. (See Figure 1)
On one side of this transparent resin base material 1, “colored pattern layer A” 2 having the following composition is formed using a stainless screen method, and a red character (logo) “BR ND” having a thickness of 5.0 μm is formed. did.

  The size of each character is 5 mm x 5 mm, and a design that includes a single blank and repeats a five-character length of "4 characters + 1 blank" and is placed on the top and bottom (in the top-to-bottom direction). Was provided with a 2 mm gap and a 1 mm gap in the left-right direction. The line width of the characters “BR ND” was approximately 300 μm.

Further, the reflective magnetic thin film layer 4 was formed by using an electron beam heating type vacuum vapor deposition machine manufactured by ULVAC, Inc., with a Bi thin film having a thickness of 80 nm, a Mn thin film having a thickness of 100 nm, a Te thin film having a thickness of 80 nm, and a protective layer. As a result, 100 nm thick SiO ₂ was laminated in this order to obtain a magneto-optical recording thin film.

  The degree of vacuum at this time was 2.5 × 10 −5 Pa, and the annealing was performed at 200 ° C. for 4 hours. Then, using the magneto-optical recording / reading apparatus, from the transparent substrate 1 side of the colored sheet H, between the “BRAND...” Character string and the “BRAND. Magnetic recording of predetermined information with a recording density of 2000 bpi (bits / inch), a recording width of 50 μm (4-row recording), and a recording length of 2.5 mm was performed. After that, using the same device, magnetically read the information magnetically recorded from that area of the colored sheet H, compare the read information with the predetermined information to confirm that it is the same, and verify its authenticity. Judged.

Except for the above, the determination was made in the same manner as in Example 1, and the same good determination result as in Example 1 was obtained.
(Comparative example)
(Comparative Example 1) “Colored pattern layer A” 2 and “colored pattern layer B” 3 are not provided, and “BRAND” “logo” is uniformly formed using the same composition as “colored pattern layer A” 2 A colored sheet of Comparative Example 1 was obtained in the same manner as in Example 1 except that an aluminum thin film having the same thickness was provided in place of the reflective magnetic thin film layer 4.

  When this colored sheet was evaluated in the same manner as in Example 1, the “BRAND” “logo” formed was visually recognizable, and the “BRAND” “logo” was placed on the colored sheet. In addition, it was thought that the same thing could be easily made by simply printing and the magnetic recording could not be read, and the anti-counterfeiting property was inferior.

H colored sheet H ′ colored label H ″ colored transfer sheet 1 transparent resin substrate 2 colored pattern layer A
3 Colored pattern layer B
4 Reflective magnetic thin film layer 5 Adhesive layer 6 Substrate for transfer 7 Adhesive layer

Claims (5)

A colored pattern layer A is provided on a part of one surface of the transparent resin substrate, a colored pattern layer B is provided on a part of the other surface of the transparent resin substrate, and the other of the transparent resin substrate. And a colored sheet provided with a reflective magnetic thin film layer so as to follow the colored pattern layer B,
The colored sheet, wherein the surface of the colored pattern layer B that is not in contact with the transparent resin substrate forms an inclined surface with a predetermined angle with respect to the other surface of the transparent resin substrate.
The colored sheet according to claim 1, wherein the haze of the transparent resin substrate is 10% or less.
The colored sheet according to claim 1 or 2, wherein the refractive index of the transparent resin substrate and the refractive index of the colored pattern layer B are the same or the difference in refractive index is 0.1 or less.
A colored label, wherein a pressure-sensitive adhesive layer is provided on the reflective magnetic thin film layer of the colored sheet according to claim 1.
  An adhesive layer is provided on the reflective magnetic thin film layer of the colored sheet according to claim 1, and a transfer base material covers the transparent resin base material and the colored pattern layer A. A colored transfer sheet which is provided so as to be peelable.

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