JP2009078429A - Information recording body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information recording body excellent in security against falsification, alteration or forgery. <P>SOLUTION: The information recording body 1 includes an intermediate transfer medium 2 and a transferred medium. The intermediate transfer medium 2 includes at least strippable protective layer 2B and an image-receiving adhesive layer 2D sequentially formed on a support and has image information recorded on the image-receiving adhesive layer. The transferred medium has an easy-to-adhere layer disposed on a base material. The information recording body 1 is configured in such a way that the image-receiving adhesive layer of the intermediate transfer medium is abutted on the easy-to-adhere layer of the transferred medium and a part other than the support of the intermediate transfer medium is transferred onto the transferred medium and integrated therewith. A phosphor excited by an infrared ray or visible light to emit fluorescence of a wavelength region of the infrared ray or visible light is included in the easy-to-adhere layer so that predetermined image information is displayed, and the phosphor is irradiated with the infrared ray or visible light to emit fluorescence, whereby the predetermined image information is made visible. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention uses plastic record carriers (credit cards, IC cards, employee cards, license cards, etc. as various representative cards) and paper-made record carriers (passbooks, passports, licenses, etc.) as representative examples. The present invention relates to an information recording body comprising a so-called intermediate transfer recording medium, which is used as one of recording means when recording individual information or the like in a booklet or the like, and is particularly excellent in preventing forgery and alteration. It relates to an information recording body.

  Various certificates such as licenses, passports, etc., in which the outer shape is a card shape or a booklet shape, and image information such as pictures and characters are written on them, are pre-determined on these information recording bodies. As a means for recording image information such as pictures and characters, a transfer recording method using an intermediate transfer recording medium carrying image information such as pictures and characters is often used.

  As such an intermediate transfer recording medium used for recording an information recording medium, for example, there is an intermediate transfer recording medium capable of recording by thermal transfer. In this, a peelable protective layer, an intermediate layer, an image receiving / adhesive layer and the like are sequentially provided on a support. The image receiving / adhesive layer of the intermediate transfer recording medium having such a structure can form image information such as patterns and characters with a heat transfer material, and is an adhesive layer. Alternatively, it is a portion for providing predetermined image information in advance with a pigment. The intermediate layer is a layer such as a pattern layer or an OVD layer.

  The image information is formed on the image receiving / adhesive layer, for example, by transferring the intermediate transfer recording medium having the above-described configuration to a transfer device that includes a drum and a thermal head, and transferring the heat as a color material. The heat transfer element group of the thermal head based on the image data while bringing the color material layer of the transfer ribbon using the photosensitive material into contact with the image receiving / adhesive layer of the intermediate transfer recording medium and pressing the thermal head from the transfer ribbon side Is carried out by appropriately generating heat. When the image data includes multicolor information, a transfer ribbon having a different color tone or a transfer ribbon having a color material layer having a different color tone is used. Multi-color image information is formed in the layer.

  The OVD layer serving as the intermediate layer described above is a layer provided for the purpose of imparting decorativeness and preventing forgery, for example, a layer on which a relief hologram composed of a fine uneven pattern is formed. The transmissive thin film layer is formed along a fine uneven surface of this layer and made of a material having a refractive index larger than that of the hologram forming portion. Intermediate transfer recording media having an intermediate layer using a relief hologram are currently being actively used because relief holograms can be manufactured in large quantities at low cost by the embossing replication method, and dead copying is difficult.

  As described above, an information recording body obtained using a conventional intermediate transfer recording medium has an effect of preventing falsification by itself as shown in Patent Document 1, for example, but ultraviolet fluorescent ink or red The effect of preventing falsification is improved by further providing a pattern made of special ink such as external fluorescent ink (for example, see Patent Document 2) on the base material.

However, when an information recording medium is produced on the substrate by printing a picture or the like with special ink and further using the intermediate transfer recording medium as described above, a chemical or heat is used. For example, the intermediate transfer recording medium may be peeled off by softening only the easy-adhesion layer, or a part of the medium may be destroyed to illegally regenerate the base material on which the special ink is formed. There is a problem that it is easy to be performed. In addition, in order to perform printing with these special inks, there is a problem that a dedicated printing machine or printing plate must be used.

Prior art documents are shown below.
JP 2000-6555 A Japanese Patent Laid-Open No. 4-292669

  The present invention has been made to solve such problems of the prior art. At least a peelable protective layer and an image receiving / adhesive layer are sequentially provided on a support, and the image receiving / adhesive layer is provided on the support. The intermediate transfer medium on which image information is recorded is brought into contact with the easy-adhesion layer of the transfer medium provided with the easy-adhesion layer on the substrate, and the intermediate transfer medium is placed on the transfer medium. It is an object of the present invention to provide an information recording body obtained by transferring and integrating portions other than the support of the transfer medium, and having good security against forgery / tampering or alteration.

  The present invention has been made to solve the above-mentioned problems. The invention according to claim 1 is characterized in that at least a peelable protective layer and an image receiving / adhesive layer are sequentially provided on a support, and the image receiving / adhesive layer is provided. In this case, the intermediate transfer medium on which the image information is recorded is brought into contact with the easy-adhesion layer of the transfer medium in which the easy-adhesion layer is provided on the substrate, and the image-receiving and adhesive layer is brought into contact with the transfer medium. An information recording medium in which a portion other than the support of the intermediate transfer medium is transferred and integrated, and the easy-adhesion layer is excited by infrared light or visible light and has a wavelength region of infrared light or visible light. Fluorescent material that emits fluorescence is contained so as to display predetermined image information, and fluorescence is emitted by irradiation with infrared light or visible light, so that predetermined image information is manifested. An information recording body characterized by the above.

  The invention according to claim 2 is the information recording body according to claim 1, wherein the easy-adhesion layer is formed by arranging halftone dot groups having various halftone dot area ratios, Image information displayed by density gradation formed by a halftone dot group is made visible by emitting fluorescence when irradiated with infrared light or visible light.

  Furthermore, the invention according to claim 3 is the information recording body according to claim 1 or 2, wherein the easy-adhesion layer is excited by irradiation with excitation light of either infrared light or visible light. It emits fluorescence in a wavelength region longer than the wavelength.

  Furthermore, the invention according to claim 4 is the information recording body according to any one of claims 1 to 3, wherein the diffraction grating structure is provided between the peelable protective layer and the adhesive / image receiving layer of the intermediate transfer medium. An OVD (Optical Variable Device) forming layer is formed as an intermediate layer.

  The information recording body according to the present invention includes an intermediate transfer medium in which at least a peelable protective layer and an image receiving / adhesive layer are sequentially provided on a support, and image information is recorded on the image receiving / adhesive layer. The image-receiving / adhesive layer is brought into contact with the easy-adhesion layer of the transfer medium provided with the easy-adhesion layer on the substrate, and the parts other than the intermediate transfer medium support are transferred and integrated on the transfer medium. A phosphor that emits fluorescence in a wavelength region of infrared light or visible light when excited by infrared light or visible light displays predetermined image information on the easy-adhesion layer. In this way, fluorescence is emitted by irradiation with infrared light or visible light, and predetermined image information is revealed, so that security is good and tampering can be made difficult. .

In addition, the information recording body according to the present invention is difficult to visually confirm the image information provided in the easy-adhesion layer, but is internalized in the easy-adhesion layer by irradiating infrared light or visible light. Since the image information that has been emitted emits light, the image information that has been internalized by visual observation or by the apparatus can be clearly recognized, so that authenticity can be reliably determined. The easy adhesion layer can record a pattern having a density gradation such as a crest, information such as a two-dimensional code, and arbitrary image information such as a character string. Since the easy-adhesion layer on which these image information is formed is integrated with the base material and the intermediate transfer medium, it is difficult to tamper without destroying these image information, and in particular, the effect of preventing alteration Is expensive.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a schematic sectional configuration of an information recording body according to the present invention. FIG. 2 is an explanatory diagram showing a state when the information recording body shown in FIG. 1 is manufactured using an intermediate transfer recording medium and a transfer medium.

  As shown in FIG. 1, the information recording medium of the present invention has at least a peelable protective layer (2B) and an adhesion / image receiving layer (2D) sequentially provided on a support (2A), and an adhesion / image receiving layer. The intermediate transfer medium (2) in which image information is recorded with a color material is placed on (2D), and the transfer medium (3) in which the easy adhesion layer (1B) is provided on the substrate (1A). By transferring the adhesion and image receiving layer (2D) in contact with the adhesive layer (1B), a portion other than the support (2A) of the intermediate transfer medium (2) on the transfer medium (3), that is, An information recording body in which a peelable protective layer (2B), an intermediate layer (2C), and an adhesion / image receiving layer (2D) are transferred and integrated, and a part or the entire surface of the easy adhesion layer (1B) Contains a phosphor that emits fluorescence in the wavelength region of infrared light or visible light when excited with infrared light or visible light. Has, in its phosphor by irradiation of infrared light or visible light fluorescence emitted, predetermined image information is adapted to be materialize.

  Hereinafter, the intermediate transfer recording medium and the medium to be transferred constituting the information recording body of the present invention, and the method for producing the information recording body using them will be described.

  Examples of the substrate (1A) constituting the transfer medium (3) include a film made of synthetic resin such as paper, polyethylene terephthalate, polyethylene naphthalate, polyvinyl chloride, polyester, polycarbonate, polymethyl methacrylate, polystyrene, and the like. These can be used alone, or a composite formed by appropriately laminating them.

  The easy adhesion layer (1B) provided on the base material (1A) is a portion that adheres and matches an image receiving / adhesion layer (2D) of the intermediate transfer recording medium (2) described later. Thus, it is a layer made of a resin having good compatibility with the image receiving / adhesive layer (2D), for example, a layer formed of a resin such as urethane, acrylic, vinyl chloroacetate, polyamide, or the like alone or in combination. And this easily bonding layer (1B) contains the fluorescent substance which is excited by infrared light or visible light, and light-emits fluorescence of an infrared wavelength range or a visible wavelength range. These phosphors are preferably those that are excited by irradiation with excitation light of either infrared light or visible light and emit fluorescence in a wavelength region longer than the wavelength of the excitation light.

  What is necessary is just to provide an easily bonding layer (1B) on the above-mentioned base material (1A) by printing means, such as screen printing. The information recording medium of the present invention is produced by integrating the image receiving / adhesive layer (2D) of the intermediate transfer recording medium (2), which will be described later, and the easy-adhesive layer (1B) by applying heat and pressure. The easy-adhesion layer (1B) is formed of a resin material exhibiting plasticity against heat as described above. This easy-adhesion layer (1B) is provided by printing such that halftone dot groups with various dot area ratios are arranged in layers, or halftone dot groups with various film thicknesses are arranged in layers.

  The easy-adhesion layer printed by combining dots of various dot area ratios, or the easy-adhesion layer printed by combining dots of various film thicknesses Predetermined image information is displayed as a table.

  In other words, a region with a halftone dot with a high halftone dot area ratio or a region with a thick halftone dot has a higher proportion of phosphors present there, so it was irradiated with infrared light or visible light. Sometimes the intensity of the emitted fluorescence becomes strong, and conversely, the area with a halftone dot with a low halftone dot area ratio or the area with a thick halftone dot has a small proportion of the phosphor present there. The intensity of the fluorescence emitted when irradiated with infrared light or visible light is weakened, and as a result, a predetermined gradation expression is made with these combinations, and predetermined image information becomes apparent.

  Therefore, when the information recording body manufactured in this way is irradiated with infrared light or visible light to emit fluorescence, desired image information is displayed depending on the degree of light emission, which is visually or using a verification machine. It is possible to make a true / false judgment.

  On the other hand, the support (2A) of the intermediate transfer recording medium (2) is a material having a higher melting or softening temperature than the material used for the image receiving and adhesive layer (2D), such as polyethylene terephthalate, polyethylene naphthalate, A film made of a synthetic resin such as polyvinyl chloride, polyester, polycarbonate, polymethyl methacrylate, or polystyrene, or a composite made of paper, synthetic paper or the like alone or in combination thereof can be used.

  Further, as the peelable protective layer (2B) constituting the intermediate transfer recording medium, the image receiving / adhesive layer (2D) is more effectively transferred to the transferred material, and the transferred image receiving / adhesive layer (2D) is used. It is necessary to have a function of a protective film for protecting against the influence of chemical or mechanical action or stimulus from the outside. Constituent materials that can ensure such functions include thermoplastic acrylic resin, chlorinated rubber resin, epoxy resin, vinyl chloride vinyl acetate copolymer resin, cellulose resin, chlorinated polypropylene resin, and Teflon (registered trademark). ) Powder, polyethylene powder, animal wax, plant wax, mineral wax, petroleum wax and other natural wax, synthetic hydrocarbon wax, aliphatic alcohol and acid wax, fatty acid ester and glycerite wax, hydrogenated wax , Synthetic ketone wax, amine and amide wax, chlorinated hydrocarbon wax, synthetic animal wax, synthetic wax such as alpha-olefin wax, and metal salt of higher fatty acid such as zinc stearate What added the agent is mentioned. Moreover, you may use an inorganic substance.

  Between the peelable protective layer (2B) and the adhesion and image receiving layer (2D), an image layer (not shown), an OVD layer (not shown), etc. are provided as an intermediate layer (2C) as necessary. Can be provided. The pattern layer may be formed by a normal printing method such as gravure printing.

  The OVD layer is composed of a hologram forming layer and a transmissive thin film layer, and the hologram forming layer is a layer in which a fine uneven pattern is provided on the surface of a hologram forming resin layer constituting a part thereof. As the resin constituting the hologram-forming resin layer, the embossing formability is good, press unevenness hardly occurs, a bright reproduced image is obtained, and the adhesiveness to the peelable protective layer (2B) and the transparent thin film layer is good. Select and use the correct one.

Specifically, thermoplastic resins such as polycarbonate resin, polystyrene resin, polyvinyl chloride resin, unsaturated polyester resin, melamine resin, epoxy resin, urethane (meth) acrylate, polyester (meth) acrylate, epoxy (meth) acrylate, Examples thereof include thermosetting resins such as polyol (meth) acrylate, melamine (meth) acrylate, and triazine (meth) acrylate, or mixtures thereof, and thermoformable materials having radically polymerizable unsaturated groups. In addition, materials other than those described above can be used as long as they can form a fine concavo-convex pattern of a hologram. Further, the transmissive thin film layer has transparency that allows the information of the hologram forming layer to pass therethrough, and is made of a material having a refractive index higher than that of the hologram forming layer (refractive index n = 1.3 to 1.5). It can be said that it is preferable from the viewpoint of improving decorativeness. Further, the permeable thin film layer may be formed by overlapping a plurality of layers. For example, a combination of layers having different refractive indexes, or a multilayer film in which high refractive index layers and low refractive index layers are alternately stacked may be used. Moreover, as a method of forming such a thin film layer, thin film forming means such as a sputtering method and an ion plating method can be applied in addition to the vacuum evaporation method, and the film thickness is within a range of 10 nm to 1000 nm. Preferably there is. The hologram formed in the hologram forming layer may be a volume phase hologram such as a Lippmann hologram other than the so-called relief hologram.

  Further, the image receiving / adhesive layer (2D) constituting the intermediate transfer recording medium is a layer for providing predetermined image information in advance before transfer recording is performed, and the intermediate transfer recording medium, the transfer target medium, and the like. It is also a layer for adhering and integrating. Specifically, the resin is mainly composed of a thermoplastic resin such as vinyl chloride such as vinyl chloride or vinyl acetate copolymer, polyester such as linear saturated polyester or polyester polyamide, or acrylic.

  Hereinafter, the information recording medium according to the present invention will be described in more detail with specific examples, but the present invention is not limited thereto.

  First, an easy-adhesion ink and a transfer medium were prepared and manufactured as follows.

<Adjustment of easy adhesion ink>
Infrared fluorescent pigment was dispersed in a water-based urethane emulsion at a ratio of 3.0% by weight to prepare an easy-adhesion ink constituting an easy-adhesion layer.

<Preparation of screen printing plate>
A Tetoron (registered trademark) screen cloth (150 lines / inch mesh) was applied to a screen printing frame of 650 mm x 650 mm, an emulsion was coated on it, and pattern exposure was performed using a positive film prepared separately. A printing plate was prepared. FIG. 3 shows a schematic configuration of the screen printing plate produced as described above and having an image forming portion at the center.

<Production of transfer medium>
After printing on high-quality paper having a basis weight of 180 kg using the easy-adhesion ink having the above composition and the screen printing plate, the area including the portion printed on the image forming portion of the screen printing plate is 90 mm × 55 mm in size. To obtain a medium to be transferred in which a high-quality paper is provided with an easy-adhesion layer made of easy-adhesion ink.

<Production of information recording body>
Using a commercially available card printer CP300FX (manufactured by Toppan Printing Co., Ltd.), receiving an image of a dedicated intermediate transfer film (intermediate transfer recording medium: support / peelable protective layer / intermediate layer / image receiving / adhesive layer) from a dedicated color ribbon Intermediate transfer of the image onto the cum-adhesive layer, and then use the built-in heat roll of the device to transfer the image onto the easy-adhesive layer of the transfer medium prepared in the above process, and then support the dedicated intermediate transfer film By peeling the body, an information recording body having a structure as shown in FIG. 2 was obtained.

<Preparation of verifier>
A verifier including a lighting unit for irradiating an object to be verified with infrared light and a detection unit including a CCD camera with a band-pass filter that transmits only the emission wavelength of the infrared fluorescent pigment attached to the light receiving unit was manufactured. .
<Confirmation of effect>
When the obtained information recording body was visually observed, only the image printed by the card printer was visually recognized, and the pattern of the easily adhesive layer was not visually recognized. When this information recording body was observed using a verifier manufactured as described above, an image applied to the image receiving and adhesive layer could be observed, thereby confirming the security of the information recording according to the present invention. .

It is explanatory drawing which shows the schematic cross-sectional structure of the information recording body which concerns on this invention. FIG. 2 is an explanatory diagram illustrating a state when the information recording body illustrated in FIG. 1 is manufactured using an intermediate transfer recording medium and a transfer target medium. It is explanatory drawing which shows a formation condition in the screen printing plate used in order to form in the easily bonding layer of the information recording body which concerns on this invention, and the image formation part currently formed there.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Information recording body 1A ... Base material 1B ... Easy adhesion layer 2 ... Intermediate transfer medium 2A ... Support 2B ... Removable protective layer 2C ... Intermediate layer 2D ... Image receiving and adhesion layer 3 ... Transfer media

Claims (4)

  At least a peelable protective layer and an adhesion / image receiving layer are sequentially provided on the support, and an intermediate transfer recording medium in which image information is recorded on the image receiving / adhesion layer, an easy adhesion layer is formed on the substrate. An information recording medium in which the image receiving / adhesive layer is brought into contact with the easy-adhesion layer of the transfer medium provided, and a portion other than the support of the intermediate transfer medium is transferred and integrated on the transfer medium. The easy-adhesion layer contains a phosphor that emits fluorescence in the wavelength region of infrared light or visible light when excited with infrared light or visible light so as to display predetermined image information. An information recording body characterized in that fluorescence is emitted by irradiation with external light or visible light, and predetermined image information is manifested.   The easy-adhesion layer is formed by arranging a group of halftone dots with various halftone dot area ratios, and image information displayed by density gradation formed by the halftone dots is infrared or visible. 2. The information recording body according to claim 1, wherein when the light is irradiated, fluorescence is emitted and manifested.   The said easily bonding layer is excited by irradiation of excitation light of either infrared light or visible light, and emits fluorescence in a wavelength region longer than the wavelength of excitation light. Information recording medium.   An OVD (Optical Variable Device) forming layer in which a diffraction grating structure is formed is laminated as an intermediate layer between the peelable protective layer and the adhesion / image receiving layer of the intermediate transfer medium. Item 4. The information recording body according to any one of Items 1 to 3.