JP2009220410A - Patch transfer medium and forgery preventing medium using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a patch transfer medium which can easily transfer a patch to a transfer object, is excellent in security properties to a transferred medium and durable when used, and has a fluorescence emitting fluorescence layer excellent in heat resistance and light resistance in addition to abrasion resistance, solvent resistance, etc., for protecting the surface of the medium and a forgery preventing medium using it. <P>SOLUTION: The patch transfer medium comprises a transfer material 10 (1) composed of a transparent substrate 11, a fluorescence layer 15, and an adhesive layer 19 and a support material 30 (2) in which a peelable resin layer 33 is attached to a support substrate 31. The transfer part of the transfer material 10 is subjected to half cut treatment to make a patch 21, and the patch 21 is laminated peelably on the peelable resin layer 33 surface of the support material 30. The fluorescence layer contains an ionizing radiation curing resin and a fluorescence emitting rare earth complex, and the absorption wavelength range of the ionizing radiation curing resin is different from the absorption wavelength range of the fluorescence emitting rare earth complex. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a patch transfer medium. More specifically, after transfer, in addition to scratch resistance and solvent resistance, the present invention has fluorescence excellent in heat resistance and light resistance, and fluorescent light emission excellent in design and security. The present invention relates to a patch transfer medium that can transfer a patch having a fluorescent layer with good transferability, and an anti-counterfeit medium using the same.

  In the present specification, “ratio”, “part”, “%” and the like indicating the composition are based on mass unless otherwise specified, and the “/” mark indicates that they are integrally laminated. “PET” is an abbreviation, synonym, functional expression, common name, or industry term for “polyethylene terephthalate”, “extrusion coating” for “EC”, and “printing” for “printing”. The “fluorescent layer” includes “a fluorescent layer and a layer having a light diffractive function such as a diffraction grating”.

  (Main applications) The main applications of the anti-counterfeit medium, in which patches are transferred using the patch transfer medium of the present invention, are ID cards such as employee cards, membership cards and student cards, gift certificates, admission cards, pass cards, and services. Media that proves the right or qualification (called prepaid) such as points can be applied, and in particular, a medium on which an image is formed on a transfer target and a patch (protective layer) is formed on the image Is preferred. However, it is possible to transfer a fluorescent layer excellent in unique design and security with good transferability, and after transfer, in addition to scratch resistance and solvent resistance, etc., if the application has fluorescence excellent in heat resistance and light resistance, It is not particularly limited.

  (Background Art) Conventionally, a medium for the above-mentioned use, for example, a medium for certifying a right or qualification for which a predetermined amount has been paid (called prepaid) is increasing. Since the medium has a certain economic value and effect, individual information such as the validity period, section, name, and age is falsified, and it is constantly falsified, altered, and illegally used. It has been proposed to improve security. It is known to transfer a fluorescent layer to a medium by using a fluorescent layer transfer foil having excellent aesthetics and design as well as high security. The fluorescent layer transfer foil is basically provided with a release layer or a release layer and a protective layer, a fluorescent layer forming layer, a fluorescent layer effect layer, and an adhesive layer on a base film to transfer a transfer material such as a card. Adhering to the region, the substrate film is peeled off after adhesion, and the fluorescent layer is transferred onto the surface of a transfer material such as a card. Since the phosphor layer transfer foil is difficult to counterfeit or counterfeit the phosphor layer, forgery and alteration of the article to be transferred are effectively prevented. Prevention property and alteration prevention property have been required. In order to meet these demands, images of fluorescent latent images composed of fluorescent pigments that generate fluorescence in the visible region under infrared or ultraviolet irradiation are formed on the surface of cards etc. It is possible to do. However, the above-mentioned fluorescent pigment image can be easily rewritten, and identification cards and cash cards are frequently used, and a lot of frictional force is applied to the surface by a card reader. There is a problem that the layer easily peels off. As a method for forming fluorescence, a simple thermal transfer method is widely used because various images can be easily formed. The fluorescent image can be recorded on a transfer medium such as a card by a thermal head or a heating means such as a laser using a thermal transfer foil containing a fluorescent agent in the thermal transfer layer. Conventionally, fluorescent images have used fluorescent dyes or fluorescent brighteners, and have the disadvantage of lacking durability such as heat resistance, light resistance, and weather resistance.

On the other hand, in a medium for the above-mentioned use, for example, an ID card, images such as letters, numbers, and facial photographs are formed on the medium surface. In recent years, these images are often formed by a transfer method by thermal transfer or sublimation transfer using a so-called melt transfer type or sublimation transfer type ink ribbon. The transfer method is a thermal transfer sheet in which a colored transfer layer is formed on a base sheet, and is heated in an image form from the back by a thermal head or the like, and the above-described colored transfer layer is thermally transferred to the surface of the thermal transfer image receiving sheet. An image is formed. This thermal transfer method is roughly classified into a sublimation transfer type and a thermal melt transfer type depending on the configuration of the colored transfer layer. Both types can form full-color images.For example, yellow, magenta, and cyan, if necessary, black or three-color thermal transfer sheets are prepared, and the surface of the same thermal transfer image-receiving sheet has each color. The images are superimposed and thermally transferred to form a full color image. With the development of various hardware and software related to multimedia, this thermal transfer method has become a full-color hard copy system for analog images such as digital images and video such as still images by computer graphics, satellite communications, and CDROM and others. That market is expanding. The specific application of the thermal transfer image receiving sheet by this thermal transfer method is diverse. Typical examples include printing proofs, image output, CAD / CAM design and design output, various medical analytical instruments such as CT scans and endoscopic cameras, measuring instrument output applications and instant As an alternative to photos, output of ID cards, ID cards, credit cards, other face photos on cards, etc., as well as composite photos and amusement photos at amusement facilities such as amusement parks, game centers, museums, and aquariums Etc. In particular, when an image is formed with a sublimation transfer type thermal transfer sheet, a gradation image such as a facial photograph can be accurately formed, but unlike an image with a normal printing ink, weather resistance, friction resistance, There are weaknesses that lack durability such as chemical properties. As a solution, a protective layer thermal transfer film having a thermal transfer resin layer is superimposed on the thermal transfer image, and the thermal transfer resin layer having transparency is transferred using a thermal head, a heating roll, or the like, and the protective layer is formed on the image. Has been made to form. Since the protective layer described above needs to be partially transferred at the time of transfer by a thermal head or a heat roll, it needs to have a foil cutting property. In this case, since the protective layer has to be a resin film having a thickness of about several microns, durability such as tough scratch resistance and chemical resistance cannot be provided. In addition, the protective layer formed on the intermediate transfer recording medium cannot be provided with sufficient durability such as scratch resistance and chemical resistance from the viewpoint of foil breakage.
Therefore, an image is formed on a medium such as a card (transfer object), particularly a transfer object, and a highly durable patch (a protective layer) is formed on the image. In addition, the patch can be easily transferred onto the image with high accuracy, and the transferred medium has excellent security and durability during use, that is, hard. A patch transfer medium having a fluorescent light-emitting fluorescent layer having a coating property and having excellent heat resistance and light resistance in addition to scratch resistance and solvent resistance to protect the surface of the medium even after repeated use many times, There is also a need for an anti-counterfeit medium using the same.

(Prior Art) Conventionally, a card in which a fluorescent dye or a fluorescent brightening agent is formed or transferred is known (for example, see Patent Documents 1 and 2). However, conventional fluorescent dyes or optical brighteners have the drawback of lacking durability such as heat resistance, light resistance and weather resistance.
In addition, the applicant of the present invention, on the base film, in the release layer or the release layer and the protective layer, the fluorescent layer forming layer, the fluorescent layer effect layer and the adhesive layer, the release layer or release layer. A fluorescent pigment printing layer containing a colorless or white fluorescent pigment is provided between the mold layer, the protective layer, and the fluorescent layer forming layer, or between the fluorescent layer effect layer and the adhesive layer. A fluorescent layer transfer foil is disclosed (for example, see Patent Document 3). However, conventional fluorescent pigments have problems such as lack of durability such as light resistance and weather resistance, and two layers of a fluorescent layer effect layer and a fluorescent pigment printing layer, which are complicated and expensive to manufacture. is there.
Further, as an identification mark that can be formed on various articles by a transfer foil or a label, an identification mark having a fluorescent light emitting layer containing an optically active rare earth complex, the rare earth complex having diastereoselectivity. Has a ligand. Since the fluorescent light-emitting layer containing the optically active rare earth complex emits circularly polarized fluorescence in a specific wavelength region, the authenticity determination may be performed by measuring the difference in the intensity of left and right circularly polarized light or the g value. An identification mark that can be used is known (see, for example, Patent Document 4). However, it is a transfer foil characterized in that a fluorescent light emitting layer (identification mark) containing an optically active rare earth complex and an adhesive layer are laminated in this order on a temporary support film, which is transferred to the surface of a medium. If it is used as the outermost surface and is repeatedly used many times, it has a defect that it lacks scratch resistance and solvent resistance and lacks durability.
Furthermore, the applicant has laminated a sheet base material provided with a resin layer, a transparent sheet provided with a hologram forming layer and a receiving layer, and half-cut treatment is performed on the transparent sheet portion including the fluorescent layer forming layer and the receiving layer. An intermediate transfer recording medium that is applied and peels between the resin layer and the transparent sheet is disclosed (for example, see Patent Documents 5 to 6). However, there is a disadvantage that only the fluorescent layer is absent, the fluorescent light emitting layer is absent, and the security is lacking.

Japanese Patent Application Laid-Open No. 3-159796 Japanese Patent Laid-Open No. 3-159795 JP 2006-1212 A JP 2005-111704 A JP 2002-274060 A JP 2004-284096 A

  Accordingly, the present invention has been made to solve such problems. The purpose is to form an image on a medium such as a card (transfer object), particularly a transfer object, and to form a highly durable patch (to be a protective layer) on the image, even under severe use conditions. Excellent durability for thermal transfer images. In addition, patches (protective layers) can be easily and accurately transferred onto images, and the transferred media have excellent security and durability when used. In other words, it has a hard coat property, and has a fluorescent light-emitting fluorescent layer with excellent heat resistance and light resistance in addition to scratch resistance and solvent resistance to protect the surface of the medium even after repeated use. A medium and an anti-counterfeit medium using the same are provided.

In order to solve the above-mentioned problems, a patch transfer medium according to the invention of claim 1 includes: (1) a transparent substrate, a transfer material comprising a fluorescent layer and an adhesive layer on one surface of the transparent substrate, and (2 ) It consists of a support material provided with a peelable resin layer on a support base material, and the transfer part of the transfer material is subjected to a half-cut treatment to form a patch, and the patch is laminated so as to be peelable to the peelable resin layer surface of the support material In the patch transfer medium, the fluorescent layer includes an ionizing radiation curable resin and a fluorescent light-emitting rare earth complex, and the absorption wavelength region of the ionizing radiation curable resin is different from the absorption wavelength region of the fluorescent light-emitting rare earth complex. As it is.
The patch transfer medium according to the invention of claim 2 is such that the adhesive layer is an adhesive adhesive layer having adhesiveness.
An anti-counterfeit medium according to a third aspect of the present invention is the anti-counterfeit medium in which the patch of the patch transfer medium according to any one of the first and second aspects is transferred to a transfer object, wherein the patch of the transfer material is transferred. An anti-counterfeit medium characterized in that information is printed on the formed part by any one of a hot melt transfer method, a heat sublimation transfer method, and an ink jet method. As you can see.

According to the first aspect of the present invention, when the fluorescent layer is irradiated with ionizing radiation and reacted (cured), it is not affected by the rare earth complex and can be cured with the minimum irradiation amount. A transfer object), in particular, an image is formed on the transfer object, a highly durable patch (which becomes a protective layer) is formed on the image, and it is excellent in various durability of thermal transfer images even under severe use conditions, In addition, the patch can be easily and accurately transferred onto the image (protective layer). The transferred medium has excellent security and durability in use, that is, hard coat properties. A patch transfer medium having a fluorescent light-emitting fluorescent layer excellent in heat resistance and light resistance in addition to scratch resistance and solvent resistance for protecting the surface of the medium even after repeated use is provided.
According to the second aspect of the present invention, there is provided a patch transfer medium that can be bonded firmly and efficiently by first sticking with adhesive and then bonding with a thermal bonding method that requires a large amount of heat. .
According to the third aspect of the present invention, even under severe use conditions, it is excellent in various durability for protecting an image printed by any one of the hot melt transfer system, the thermal sublimation transfer system, and the ink jet system, and has heat resistance. And an anti-counterfeit medium having a high level of security and having a fluorescent layer having a fluorescent light emission excellent in light resistance.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view of a patch transfer medium showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view of an anti-counterfeit medium showing an embodiment of the present invention transferred using the patch transfer medium of the present invention.
FIG. 3 is a cross-sectional view of an anti-counterfeit medium showing an embodiment of the present invention transferred using the patch transfer medium of the present invention.

  (Patch Transfer Medium) In the patch transfer medium 20 of the present invention, as shown in FIG. 1, the patch 21 is laminated on the surface of the peelable resin layer 33 of the support member 30 so as to be peelable. The patch 21 is a patch formed by half-cutting the transfer portion of the transfer material 10. The transfer material 10 includes (1) a transparent base material 11 and a fluorescent layer 15 and an adhesive layer 19 on one surface of the transparent base material 11, and the support material 30 is (2) a peelable resin layer to the support base material 31. 33 is provided. The fluorescent layer 15 includes a fluorescent light-emitting rare earth complex.

  (Anti-Counterfeit Medium) As shown in FIG. 2, the anti-counterfeit medium 100 of the present invention is patch-formed by half-cutting the transfer portion of the transfer material 30 using the patch transfer medium 20 of the present invention. The patch 21 is peeled off from the support material 30 and transferred to the transfer target 101. The patch 21 includes a transparent substrate 11, a fluorescent layer 15 containing a fluorescent light-emitting rare earth complex, and an adhesive layer 19.

The patch transfer medium 20 can achieve the following effects.
(1) When the patch 21 is transferred from the patch transfer medium 20 to the transfer target 101, the patch 21 is half-cut, so that it can be easily peeled off from the support material 30 and transferred with good transferability. it can.
(2) Although the conventional fluorescent light-emitting agent has large crystal particles and could not be incorporated into the fluorescent layer 15, it can be easily and uniformly dispersed by using a rare earth complex having a molecular weight of about 1500.
(3) The fluorescent layer 15 contains a fluorescent dye or a luminescent brightening agent that is inferior in heat resistance or light resistance by including a fluorescent light-emitting rare earth complex having excellent heat resistance and light resistance as a fluorescent light emitting agent. As compared with the above, fluorescence emission having remarkably excellent heat resistance and light resistance can be obtained.
(4) Further, by making the absorption wavelength region of the fluorescent light-emitting rare earth complex different from the absorption wavelength region of the ionizing radiation curable resin, curing of the ionizing radiation curable resin of the fluorescent layer 15 can be performed with a fluorescent light emitting agent. Can be cured sufficiently.

Moreover, the forgery prevention medium 100 can have the following effects.
(1) The outermost surface of the anti-counterfeit medium 100 is the transparent base material 11 of the patch 21, and the transparent base material 11 is once formed with high strength for a film. It has excellent durability such as scratch resistance and solvent resistance, and can protect the surface of the medium more firmly than a conventional protective layer made of a resin applied. The transparent substrate 11 is preferably a biaxially stretched film.
(2) In particular, the information printing layer 10 is the outermost surface of the transfer target on which an image on which information is printed by any one of the hot melt transfer method, the heat sublimation transfer method, and the ink jet method is formed. The patch 21 having a highly durable film on the surface of the information printing layer 103 protects the image of the information printing layer 103 even under harsh use conditions. Can be protected.
(3) In addition, since the patch 21 including the fluorescent layer 15 is transferred to the anti-counterfeit medium 100, the anti-counterfeit medium 100 has fluorescent light-emitting security, and has much higher heat resistance and light resistance than the conventional fluorescent layer. Expresses excellent fluorescence.

  (Transfer Material) The transfer material 10 comprises a transparent base material 11, a fluorescent layer 15 and an adhesive layer 19 on one surface of the transparent base material 11.

  (Transparent base material) The transparent base material 11 functions as a protective layer in such a form that 11 parts of the transparent base material is cut and covers at least the part including the information printing layer 103 with the half-cut portion as a boundary. . Various materials can be applied depending on the application as long as they have transparency and durability such as weather resistance, friction resistance, and chemical resistance. For example, polyester resins such as polyethylene terephthalate and polyethylene naphthalate, polyamide resins, vinyl resins such as polyvinyl chloride, acrylic resins, imide resins, engineering resins such as polyarylate, polycarbonate, cyclic polyolefin resins, cellophane Examples thereof include cellulosic films. The transparent substrate 11 may be a copolymer resin containing these resins as a main component, a mixture (including an alloy), or a laminate composed of a plurality of layers.

  The transparent substrate 11 may be a stretched or unstretched film, but a film stretched in a uniaxial direction or a biaxial direction is preferable for the purpose of improving strength. A thickness of about 2.5 to 50 μm is usually applicable, but 2.5 to 25 μm is preferable. Prior to coating, the transparent substrate 11 is subjected to easy adhesion treatment such as corona discharge treatment, plasma treatment, primer (also called an anchor coat, adhesion promoter, or easy adhesive) coating treatment, alkali treatment, etc. May be. Moreover, you may add additives, such as a filler, a plasticizer, a coloring agent, and an antistatic agent, as needed. A biaxially stretched polyethylene terephthalate film is preferably used because of its good heat resistance and mechanical strength.

  (Fluorescent layer) The fluorescent layer 15 may include a fluorescent light-emitting rare earth complex, and the binder resin may include an ionizing radiation curable resin as a main component, and may include additives such as silicone and filler as necessary. Good.

(Rare earth complex) A fluorescent light-emitting rare earth complex is an optically active rare earth complex that emits fluorescence, which is a rare earth complex having an optically active site, and a rare earth complex in which a ligand having an optically active site is coordinated. Or, one of the two stereoisomers (Δ-form, Λ-form) existing in the absolute configuration around the rare earth metal atom of the tetragonal prismatic coordination structure of the rare earth complex is excessively contained. The rare earth complex in the state of being. The rare earth complex having such a structure has excellent emission characteristics and a sharp emission spectrum with a narrow half-value width. In particular, rare earth complexes in which the rare earth ion Ln ³⁺ is any one of Eu ³⁺ , Tb ³⁺ , Yb ³⁺ , Nd ³⁺ , Er ³⁺ , Sm ³⁺ , Dy ³⁺ , and Ce ³⁺ are weakly excited. It is a strong light-emitting rare earth complex that emits strong light even with light, and is preferably used. For example, there are general formula (1), general formula (2), general formula (3), and general formula (4). The rare earth complex preferably contains a <—C _n F _{2n + 1} (n is an integer of 1 to 22)> group from the viewpoint of heat resistance and stability. Specific examples include Lumisys (registered trademark, total distributor: Central Techno Co., Ltd., manufacturer: Nissei Chemical Industry Co., Ltd.) R-600, G-900, YB-1200, and the like. Details are described in WO2005 / 044770, JP2006-249075A, and JP2005-97240A.

（式中、Ｄは重水素原子、ハロゲン原子又は水素原子を含まないＣ１〜Ｃ２２の脂肪族基を示す）

(Wherein D represents a C1-C22 aliphatic group containing no deuterium atom, halogen atom or hydrogen atom)

(Wherein X represents C—R or N, and R represents a hydrogen atom or a substituent)

  By using a rare earth complex having a high luminous efficiency, the proportion of the fluorescent light emitting rare earth complex contained in the ionizing radiation curable resin that is the binder resin is about 0.01 to 10%, preferably 0.1. ~ 5%. If it is less than this range, the intensity of the fluorescence emission is small, and if it exceeds this range, the intensity of the fluorescence emission is too high, resulting in a high cost.

  (Wavelength region) Further, as the ionizing radiation curable resin which is a binder resin, among the resin systems, there is no absorption or small absorption in the absorption wavelength region of the fluorescent luminescent rare earth complex and the fluorescent emission wavelength region. Is preferred. When absorption occurs in the absorption wavelength region of the fluorescent light-emitting rare earth complex, when the ionizing radiation curable resin is irradiated with ionizing radiation and reacted (cured) to form the fluorescent layer 15, the rare earth complex is ionizing radiation 1. Part of the water is absorbed, resulting in poor reaction (curing) and insufficient durability, or a large amount of irradiation is required, resulting in high cost. In this respect, an ionizing radiation curable resin system containing the urethane (meth) acrylate oligomer is preferable, and the resin system can be cured by irradiation in an ultraviolet region having a wavelength of 250 nm or less. In addition, when there is absorption in the fluorescence emission wavelength region of the fluorescent light-emitting rare earth complex, ionizing radiation is emitted when, for example, ultraviolet rays are irradiated to fluoresce the medium on which the fluorescent layer 15 / adhesive layer 19 is transferred. The curable resin absorbs part of the ultraviolet rays, resulting in poor light emission and insufficient fluorescence brightness, or requiring a large amount of irradiation, resulting in an increase in size and cost due to the high output of the fluorescent light emitting device. It is. The absorption wavelength region of the ionizing radiation curable resin before curing and the ionizing radiation curable resin after curing are the same.

  The ionizing radiation curable resin is preferably (1) an isocyanate having three or more isocyanate groups in the molecule, and (2) at least one hydroxyl group and at least two (meth) acryloyloxy groups in the molecule. Preferably using an ionizing radiation curable resin containing a polyfunctional (meth) acrylate having, or (3) a urethane (meth) acrylate oligomer which is a reaction product of a polyhydric alcohol having at least two hydroxyl groups in the molecule. May contain polyethylene wax, applied, dried, and cured with ionizing radiation to form an ionizing radiation curable resin.

  The ionizing radiation curable resin containing the urethane (meth) acrylate oligomer (referred to herein as the ionizing radiation curable resin composition M) is a cured ionizing radiation curable resin containing the urethane (meth) acrylate oligomer. Examples thereof include photocurable resins disclosed in Japanese Patent Application Laid-Open No. 2001-329031. Specific examples include MHX405 varnish (made by The Inktec Co., Ltd., ionizing radiation curable resin product name) and Iupimer UV · V3031 (manufactured by Mitsubishi Chemical Co., Ltd., product name of ionizing radiation curable resin).

  (Formation of fluorescent layer) The fluorescent layer 15 is formed by using the above-mentioned ionizing radiation curable resin, fluorescent light-emitting rare earth complex, filler, photopolymerization initiator, plasticizer, stabilizer, surfactant, etc. as necessary. In addition, it may be dispersed or dissolved in a solvent, applied by a known coating method such as roll coating, gravure coating, comma coating, or die coating, dried, and reacted (cured) with ionizing radiation after shaping the fluorescent layer. . The thickness of the fluorescent layer 15 is usually about 1 to 10 μm, preferably 2 to 5 μm.

  By using a rare earth complex having a high luminous efficiency, the proportion of the fluorescent light emitting rare earth complex contained in the ionizing radiation curable resin that is the binder resin is about 0.01 to 10%, preferably 0.1. ~ 5%. If it is less than this range, the intensity of the fluorescence emission is small, and if it exceeds this range, the intensity of the fluorescence emission is too high, resulting in a high cost.

  (Adhesive layer) As the adhesive layer 19, a heat-sensitive adhesive that melts or softens when heated and exhibits an adhesive effect can be applied. Specifically, a vinyl chloride resin, a vinyl acetate resin, or vinyl chloride. Examples thereof include vinyl acetate copolymer resins, acrylic resins, and polyester resins.

  (Adhesive adhesive layer) The adhesive layer 19 is preferably an adhesive adhesive layer having both adhesiveness and thermal adhesiveness. As the adhesive adhesive layer, an acrylic resin or rubber resin having adhesiveness and thermal adhesiveness, or a mixture of an adhesive resin and a thermal adhesive resin can be applied.

  The material resin is dissolved or dispersed in a solvent, an additive such as a pigment is added as appropriate, and the layer is applied and dried by a known method such as roll coating, gravure coating, or comma coating, and a layer having a thickness of 1 to 30 μm Get.

  (Support Material) The support material 30 is provided with a peelable resin layer 33 on a support base material 31.

  (Supporting base material) The supporting base material 31 is not particularly limited. For example, condenser paper, glassine paper, sulfuric acid paper, high-size paper, synthetic paper (polyolefin-based, polystyrene-based), high-quality paper, coated paper , Synthetic resin or emulsion-impregnated paper, polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyamide resins, vinyl resins such as polyvinyl chloride, acrylic resins, imide resins, polyarylate, etc. Examples include engineering resins, polycarbonates, cyclic polyolefin resins, and cellulose films such as cellophane. When the peelable resin layer 33 described later is provided on the support base 31, the surface of the support base 31 may be subjected to corona discharge treatment or a primer layer may be provided in order to improve adhesion.

  The support material 30 preferably has a thickness of 10 μm to 100 μm. If the sheet base material is too thin, the so-called stiffness of the obtained patch transfer medium 20 is lost, and it cannot be conveyed by a thermal transfer printer, or the patch transfer medium 20 is curled or wrinkled. Occur. On the other hand, if the support material 30 is too thick, the resulting patch transfer medium 20 becomes too thick, and the force to drive and drive the thermal transfer printer becomes too great, causing the thermal transfer printer to fail or not be transported normally.

  (Peelable resin layer) The peelable resin layer 33 is formed of a pressure-sensitive adhesive layer, a simple adhesive layer, or an extrusion coating (EC) layer.

The pressure-sensitive adhesive layer is a conventionally known solvent-based or water-based pressure-sensitive adhesive, such as vinyl acetate resin, acrylic resin, vinyl acetate-acrylic copolymer, vinyl acetate-vinyl chloride copolymer, ethylene-vinyl acetate copolymer. Examples thereof include rubber resins such as coalescence, polyurethane resin, natural rubber, and chloroprene rubber. The coating amount of the pressure-sensitive adhesive layer is generally about 8 to 30 g / m ² (solid content), and is applied and dried by a conventionally known method such as gravure coating, roll coating, comma coating, and the like. To form an adhesive layer. Further, the adhesive strength of the pressure-sensitive adhesive layer is the peel strength between the transparent substrate 11 and the pressure-sensitive adhesive layer, and is desirably in the range of about 5 to 1,000 g in a 180 ° peeling method in accordance with JIS Z0237. It is preferable to select and use the kind of adhesive and the coating amount as described above so that the peel strength is within the above range when the adhesive layer is formed on the support substrate 31. Moreover, in order to provide an adhesive layer on the support base material 31 and to laminate the transparent base material 11 and the adhesive layer, methods such as dry lamination and hot melt lamination of the adhesive layer can be employed.

  For the simple adhesive layer, latex of acrylic resin such as styrene-butadiene copolymer rubber (SBR), acrylonitrile-butadiene copolymer rubber (NBR) or polyacrylate, rubber resin, waxes and a mixture thereof are used. Then, it may be formed on the support substrate 31 by a conventionally known coating method, and the transparent substrate 11 and the simple adhesive layer may be laminated by dry lamination while heating. And the simple adhesive layer after peeling the transparent base material 11 and the support base material 31 falls in adhesiveness, and the transparent base material 11 and the support base material 31 cannot be bonded together again. When such a simple adhesive layer is used, a primer layer may be provided between the support base 31 and the simple adhesive layer.

  Further, as the peelable resin layer 33, an EC layer may be provided on the support base 31. The thermoplastic resin forming the EC layer does not essentially adhere to the transparent substrate 11 and is not particularly limited as long as the resin has EC processing characteristics. On the other hand, a polyolefin-based resin having no essential adhesiveness and excellent workability is particularly preferable. Specifically, LDPE, MDPE, HDPE, PP resin, etc. can be used. Using a mat roll as the cooling roll for EC processing of these resins, the mat surface is transferred to the surface of the EC layer to make the irregular shape opaque, and the polyolefin resin is calcium carbonate, titanium oxide, etc. The white pigment may be kneaded and made opaque. The EC layer may be a single layer or a plurality of layers. The peel strength from the transparent substrate 11 can be adjusted by the processing temperature and the resin type during EC processing. In this way, the EC layer is formed on the support substrate 31 simultaneously with EC processing, and the support substrate 31 and the transparent substrate 11 may be laminated via the EC layer by so-called EC lamination.

  (Heat resistant slipping layer) In the patch transfer medium 20, a heat resistant slipping layer may be provided on the surface opposite to the peelable resin layer 33 surface of the support base 31 as required. Since retransfer to the transfer target 101 using the patch transfer medium 20 is performed by a thermal transfer printer such as a thermal head or a heat roll, a heat resistant slipping layer may be provided to prevent adverse effects such as sticking and wrinkles due to the heat. Good. The resin for forming the heat-resistant slipping layer may be any conventionally known resin such as polyvinyl butyral resin, polyvinyl acetoacetal resin, acrylic resin, cellulose resin, aromatic polyamide resin, polyimide resin, polycarbonate resin, etc. Is mentioned.

  The slipperiness-imparting agent that is added to or overcoated the heat-resistant slipping layer is, for example, a layer composed of a polyalcohol polymer compound, a polyisocyanate compound, and a phosphate ester compound, and a filler may be further added. preferable. The heat resistant slipping layer is prepared by dissolving or dispersing the above-described resin, slipperiness-imparting agent, and filler with an appropriate solvent, and, for example, gravure printing or screen printing on the back surface of the support substrate 31. It may be formed by applying and drying with the like.

  (Patch) The patch transfer medium 20 has a patch 21 laminated on the surface of a support material 30 in a peelable manner. The patch 21 is patch-shaped by half-cutting the transfer portion of the transfer material 10 composed of the transparent base material 11 / fluorescent layer 15 / adhesive layer 19, and the surface of the support material 30 comprising the support base material 31 / peelable resin layer 33. It is laminated in a peelable manner.

  (Half cut) As a half-cut treatment method, a method of moving the upper die up and down by inserting the patch transfer medium 20 in a stacked state before cutting between the upper die attached with the cutter blade and the pedestal, or cylinder type There is no particular limitation as long as it is a method capable of half-cutting, such as a rotary cutter method or a heat treatment method using a laser processing means. It is not necessary to remove the patch 21 portion and the other portions. However, as shown in the cross section of the patch transfer medium 20 shown in FIG. 1, only the patch 21 portion is half-cut and the other portions are peeled off in advance. It is preferable to keep it (referring to those skilled in the art as scrap removal). When the patch 21 is transferred to the transfer target, the transparent substrate 11 is not cut at the half-cut portion and can be transferred reliably.

  In general, half-cutting is performed by continuously cutting around the patch 21 in units of one round, and by partially providing uncut (no cut) parts such as four corners or perforated parts. It is possible to prevent troubles in which the half-cut portion is peeled off during handling such as transporting a thermal transfer printer. In addition, at least one part of the support material 30 is not cut and is made continuous. If the cutting depth is too deep in the half-cut processing, the support base material 31 is cut, and the printer is cut at the half-cut processing section during printer conveyance, which easily causes a conveyance trouble.

  Although it does not specifically limit as a shape of the patch 21, For example, a rectangle, an ellipse, a round shape, a donut shape etc. can be illustrated. The half-cut patch 21 portion may be smaller than the entire size of the transfer target body, and the patch 21 portion may be partially removed from the transfer body. Furthermore, the entire width of the patch transfer medium 20 may be wider than the width of the surface to which the transfer target is transferred.

  (Patch Transfer Medium) The patch transfer medium 20 of the present invention has a transparent base material 11 / fluorescent layer 15 / adhesive layer 19 on the surface of the peelable resin layer 33 of the support material 30 comprising the support base material 31 / peelable resin layer 33. A patch 21 obtained by half-cutting the transfer portion of the transfer material 10 is laminated so as to be peelable.

  (Anti-Counterfeit Medium) As shown in FIG. 2, the anti-counterfeit medium 100 of the present invention is a patch 21 in which the transfer portion of the transfer material 30 is half-cut processed into a patch shape using the patch transfer medium 20 of the present invention. Is peeled off from the support material 30 and transferred to the transfer target 101. The patch 21 includes a transparent substrate 11, a fluorescent layer 15 containing a fluorescent light-emitting rare earth complex, and an adhesive layer 19.

  (Transfer method) As a transfer method for transferring to a transfer object, a known transfer method may be used. For example, hot stamping by hot stamping (foil stamping), transfer by a hot roll, thermal printer using a thermal head (thermal printing head). A known method such as a thermal transfer printer can be applied. Further, it may be transferred by heating in accordance with the shape of the patch 21.

  (Transfer To be Transferred) The transfer target 101 is not particularly limited, for example, natural fiber paper, coated paper, tracing paper, plastic film that is not deformed by heat during transfer, glass, metal, ceramics, wood, cloth, etc. Any one of them may be used, and it may be appropriately selected depending on the application. Further, at least a part of the medium of the transfer target 101 may be subjected to image, coloring, printing, or other decoration.

  (Information Print Layer) The image on the transfer target 101 is not particularly limited, but images such as letters, numbers, and facial photographs are formed. As a method for forming an image on the transfer target 101, an information printing layer 103 printed by any one of a hot melt transfer method, a heat sublimation transfer method, and an ink jet method is preferable. The information printing layer 103 to be an image is printed on the transfer target 101 with a thermal transfer printer or an ink jet printer, and the patch 21 is subsequently applied to the surface of the information printing layer 103 using the forgery prevention medium 100 by an in-line method in the same planter. Can be transferred. In the case where the information printing layer 103 is provided on the transfer target 101, a receiving layer may be provided as necessary in order to improve the adhesion and fixability of the print. Although the information printing layer 103 provided on the surface of the transfer target 101 lacks durability, the patch 21 is transferred, the image is protected, the durability is excellent, and the fluorescent light-emitting property is excellent in heat resistance and light resistance. It becomes the forgery prevention medium 100 which has a fluorescent layer and is excellent in security. In this way, the anti-counterfeit medium 100 using the patch transfer medium 20 forms an image on a medium such as a card (transfer object), particularly a transfer object, and a highly durable patch (protective layer) on the image. The thermal transfer image is excellent in various durability even under severe use conditions, and the patch can be easily and accurately transferred onto the image by the patch (protective layer). In addition, it has excellent security and durability during use, that is, a hard coat property, and in addition to scratch resistance and solvent resistance to protect the surface of the medium even when used repeatedly, heat resistance and It has a fluorescent layer that emits light with excellent light resistance.

  (Durability) Since it can protect the surface of the medium and protect it from mechanical and chemical damage over a long period of time even after repeated use, it can be used for gas station cards and construction site cards used in extremely harsh environments, and It can also be suitably used for an entrance / exit card that has no expiration date or that repeatedly enters and exits many security-controlled rooms such as entrance / exit cards, point cards, and financial institutions.

  Further, a fluorescent layer having a fluorescent emission property of the fluorescent layer 15 is formed, and design and security properties are exhibited. Furthermore, the fluorescence of the fluorescent layer 15 is emitted by a fluorescent light-emitting rare earth complex, and is excellent in heat resistance and light resistance. The fluorescence of the fluorescent layer 15 is not observable with normal visible light, and preferably emits visible light when irradiated with light of a specific wavelength. The light source preferably has a wavelength in the ultraviolet region, and an ultraviolet LED, black light, xenon lamp, Examples thereof include a short wavelength semiconductor laser.

  The heat resistance of the fluorescent light-emitting rare earth complex used for the fluorescent layer 15 was resistant to about 250 ° C., and even when the fluorescent layer 15 was left in a 200 ° C. environment for 1 hour, there was no significant change in emission luminance. In addition, the weather resistance test measured according to JIS-B-7753 (Sunshine carbon arc lamp type light resistance and weather resistance tester) compares the color change of the printed matter after irradiation for 500 hours with that before irradiation. As a result of visual evaluation, there was no significant change even after 500 hours. In this way, the foil can be easily transferred onto a medium such as a card (transfer object), and the transferred medium has excellent security and durability during use, and is repeated many times. Even in use, in addition to the scratch resistance and solvent resistance that protect the surface of the medium, it has a fluorescent light-emitting fluorescent layer that is excellent in heat resistance and light resistance.

  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 Using a PET film having a thickness of 25 μm as the transparent substrate 11, the following phosphor layer composition is dried on a gravure reverse coater on one surface of the substrate 11 so that the thickness after drying becomes 2 μm. The phosphor layer 15 was formed by coating, drying at 100 ° C., and curing by irradiation with ultraviolet rays using a high-pressure mercury lamp.
・ <Fluorescent layer composition>
MHX405 varnish (made by The Inktec Co., Ltd., ionizing radiation curable resin, trade name)
25 parts by weight Methacrylate oligomer (manufactured by Nippon Synthetic Chemical Co., Ltd., trade name: Purple light 6630B) 5 parts by weight Reactive silicone (trade name: X-22-2445, manufactured by Shin-Etsu Chemical Co., Ltd.) 0.15 parts by weight Lumisys R-600 (Central Techno) (Product name, red-emitting rare earth complex)
0.3 parts by mass Polyethylene wax (average particle size 5 μm) 0.6 parts by mass Photopolymerization initiator (Ciba, trade name Irgacure 184) 0.9 parts by mass Solvent (ethyl acetate: methyl isobutyl ketone = 1: 1) 70 parts by mass Next, the following adhesive layer composition is applied to the surface of the fluorescent layer 15 with a gravure coater so that the coating amount after drying is 1 μm and dried at 100 ° C. to form the adhesive layer 19 Thus, a transfer material 10 having a layer structure of transparent substrate 11 / fluorescent layer 15 / adhesive layer 19 was obtained.
・ <Adhesive layer composition>
Polymethylmethacrylate resin 30 parts Solvent (water: isopropyl alcohol = 1: 1) 70 parts Separately, a PET film having a thickness of 38 μm was used as the support 31, and the support 31 and the previously produced transfer material 10 were laminated. . The following peelable resin layer composition is applied to the surface of the support 31 so that the coating amount after drying is 3 μm, dried at 100 ° C., and then the surface of the transparent substrate 11 of the transfer material 10 is pressurized. A laminate was obtained by the dry lamination method.
・ <Peelable resin layer composition (simple adhesive layer type)>
Acrylic resin latex (manufactured by Nippon Zeon Co., Ltd., LX874) 30 parts Solvent (water: isopropyl alcohol = 1: 1) 70 parts Rectangle cutter blade with rounded corners on transfer material 10 part for the above laminate A half-cut process was performed by a press method of an upper mold and a pedestal to which a patch was attached, and scrap removal was performed to obtain a patch transfer medium 20 of Example 1 in a continuous winding shape in which patches were peeled and stacked.

  (Example 2) Instead of Lumisis R-600 in the phosphor layer composition, Lumisis G-900 (manufactured by Central Techno Co., Ltd., trade name of green-emitting rare earth complex) was used in the same manner as in Example 1. A patch transfer medium 20 of Example 2 was obtained.

(Example 3) Instead of the single fluorescent layer 15, a red light emitting fluorescent layer composition, a green light emitting fluorescent layer composition, and a blue light emitting fluorescent layer composition are used, and the face is printed by gravure printing. The photo was printed and cured by irradiating with ultraviolet rays using a high-pressure mercury lamp to form a full-color fluorescent layer 15. Other than that was carried out similarly to Example 1, and obtained the patch transfer medium 20 of Example 3. FIG.
・ <Red luminescent phosphor layer composition>
Iupimer UV / V3031 (manufactured by Mitsubishi Chemical Co., Ltd., trade name of ultraviolet curable resin) 25 parts by mass Methacrylate oligomer (manufactured by Nippon Gosei Kagaku Co., Ltd., trade name: Shiko 6630B) 5 parts by mass Lumisis R-600 (manufactured by Central Techno Co., Ltd., red light emission) Rare earth complex trade name)
0.3 parts by mass Photopolymerization initiator (product name, Irgacure 907, manufactured by Ciba) 0.9 parts by mass Solvent (ethyl acetate: methyl isobutyl ketone = 1: 1) 70 parts by mass << green light-emitting fluorescent layer composition >
MHX405 varnish (supra) 25 parts by mass methacrylate oligomer (manufactured by Nippon Synthetic Chemical Co., Ltd., trade name: Purple Light 6630B) 5 parts by mass Lumisys G-900 (manufactured by Central Techno Co., Ltd., trade name of green-emitting rare earth complex)
0.3 part by mass Photopolymerization initiator (trade name Irgacure 907, manufactured by Ciba) 0.9 part by mass Solvent (ethyl acetate: methyl isobutyl ketone = 1: 1) 70 parts by mass <Blue light emitting phosphor layer composition >
MHX405 varnish (supra) 25 parts by weight methacrylate oligomer (manufactured by Nippon Synthetic Chemical Co., Ltd., trade name: Murasaki 6630B) 5 parts by weight Lumisis YB-1200 (manufactured by Central Techno Co., Ltd., trade name of blue-emitting rare earth complex)
0.3 part by mass Photopolymerization initiator (Ciba, trade name Irgacure 907) 0.9 part by mass Solvent (ethyl acetate: methyl isobutyl ketone = 1: 1) 70 parts by mass

Comparative Example 1 A patch transfer medium 20 of Comparative Example 1 was obtained in the same manner as in Example 1 except that the following composition was used as the fluorescent layer composition of the fluorescent layer 15.
・ <Fluorescent layer composition>
MHX405 varnish (made by The Inktec Co., Ltd., ionizing radiation curable resin, trade name)
25 parts by weight Methacrylate oligomer (manufactured by Nippon Synthetic Chemical Co., Ltd., trade name: Purple light 6630B) 5 parts by weight Reactive silicone (trade name: X-22-2445, manufactured by Shin-Etsu Chemical Co., Ltd.) 0.15 parts by weight Fluorescent whitening agent 0.3 Part by mass Photopolymerization initiator (Ciba, trade name Irgacure 184) 0.9 part by mass Solvent (ethyl acetate: methyl isobutyl ketone = 1: 1) 70 parts by mass

(Examples 4 to 6, Comparative Example 2) A polyvinyl chloride credit card specification card was used as the transfer target 101, and a sublimation thermal transfer sheet (Dai Nippon Printing Co., Ltd.) was applied to the surface of the transfer target 101. , Yellow, magenta, and cyan color standard ribbons) were printed with a 600 dpi thermal transfer printer on the face photo and name as unique information to form an image.
The adhesive layer 19 surface of the patch transfer medium 20 of the example and the comparative example is overlapped on the image surface by a card printer HDP820 manufactured by FARGO, transferred onto the entire surface of the transfer target 101, and the support material 30 is peeled off and gradually removed. Thus, the forgery prevention medium 100 of Examples 4 to 6 and Comparative Example 2 was obtained.

  (Evaluation test) Evaluation was carried out by transferring to a transfer material and evaluating the transferability, the hardness of the surface after transfer, the scratch property, and the light resistance of the fluorescent layer.

(Evaluation result) When the pencil hardness test was measured in accordance with JIS-K-5400 for the fluorescent layer surface after being cured with ultraviolet rays in Examples 1 to 3, it had a hardness of 2H or more, and to the fluorescent layer. Even when the fluorescent light-emitting rare earth complex is included, the absorption wavelength of the fluorescent light-emitting agent does not hinder the curing of the ionizing radiation-curable resin, indicating that it can be sufficiently cured.
The patch transfer media 20 of Examples 1 to 3 and Comparative Example 1 had good releasability during transfer and could be transferred normally.
As for light resistance, JIS-B-7773 (Sunshine Carbon Arc) was used using the patch transfer medium 20 of Examples 1 to 3 and Comparative Example 1 and the anti-counterfeit medium 100 of Examples 4 to 6 and Comparative Example 2. Measurement was performed according to a light-type light resistance and weather resistance tester), and the change in color of the image after irradiation for 500 hours was evaluated by visual comparison with that before irradiation. The patch transfer medium 20 of Examples 1 to 3 and the anti-counterfeit medium 100 of Examples 4 to 6 did not change significantly and had good light resistance. This is the light resistance obtained by limiting the material of the fluorescent light-emitting agent to be included in the fluorescent layer to the rare earth complex, and it was possible to improve the design and security. Furthermore, when the fluorescent layer was irradiated with ultraviolet rays with a black light having a wavelength of 365 nm, fluorescence was emitted.
However, in the patch transfer medium of Comparative Example 1 and the anti-counterfeit medium of Comparative Example 2, the fading of the fluorescence emission was remarkably poor.

It is sectional drawing of the patch transfer medium which shows one Example of this invention. It is sectional drawing of the forgery prevention medium which shows one Example of this invention transferred using the patch transfer medium of this invention. It is sectional drawing of the forgery prevention medium which shows one Example of this invention transferred using the patch transfer medium of this invention.

Explanation of symbols

10: Transfer material 11: Base material 15: Fluorescent layer 17: Reflective layer 19: Adhesive layer 20: Patch transfer medium 21: Patch 30: Support material 31: Support base material 33: Peelable resin layer 100: Anti-counterfeit medium 101: Transfer object 102: Receiving layer 103: Information printing layer

Claims (3)

(1) comprising a transparent substrate, a transfer material comprising a fluorescent layer and an adhesive layer on one surface of the transparent substrate, and (2) a support material provided with a peelable resin layer on the support substrate, wherein the transfer material In the patch transfer medium in which the transfer part is subjected to a half-cut treatment to form a patch, and the patch is laminated to the peelable resin layer surface of the support material, the fluorescent layer has a fluorescent emission property with the ionizing radiation curable resin. A patch transfer medium comprising a rare earth complex, wherein an absorption wavelength region of the ionizing radiation curable resin is different from an absorption wavelength region of the fluorescent luminescent rare earth complex. The patch transfer medium according to claim 1, wherein the adhesive layer is an adhesive adhesive layer having adhesiveness. The anti-counterfeit medium in which the patch of the patch transfer medium according to claim 1 is transferred to a transfer target, a heat melt transfer method, a heat sublimation, on a portion of the transfer material onto which the patch is transferred. An anti-counterfeit medium characterized in that information is printed by either a transfer method or an inkjet method.

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