MXPA06005450A - Image, recording method, information recognition method, and information recognition system - Google Patents

Abstract

It is possible to easily record a plenty of information without using a layered structure of color material layers and to provide an image or the like which cannot be easily forged/altered. In an image formed by superimposing a plurality of inks, a first ink layer is formed by a first ink having a fluorescent light emitting characteristic on a recording material and a second ink layer is formed by a second ink on the first ink layer, wherein the first ink layer is partially exposed to the second ink layer.

Description

IMAGE, METHOD OF RECORDING, METHOD OF RECOGNITION OF INFORMATION AND SYSTEM OF RECOGNITION OF INFORMATION TECHNICAL FIELD The present invention relates to an image, a recording method, an information recognition method, and an information recognition system. More specifically, the present invention relates to an image, to a recording method, to an information recognition method, and to an information recognition system that allows to easily establish an authenticity assessment of a genuine product in relation to a product. manufactured by means of falsification, alteration or through a fraudulent method. BACKGROUND OF THE TECHNIQUE Several proposals have been made in recent years in order to avoid the imitation, copying, and the like of several prints and printed documents of which company actions and cards are some examples. For example, Patent Documents 1 to 4 each propose an impression using ink containing a colorless pigment that can not be observed under ordinary light and is excited with ultraviolet light to emit visible light. Patent Document 5 proposes a composition which is excited with infrared light to emit infrared light. The Patent Documents 6 and 7 each propose an impression and a display body of images each using a fluorescent agent that emits visible light with infrared rays. In each of these proposals, information is created by sequentially laminating dye layers for respective colors on recording paper or on a recording medium. When trying to record a large amount of information according to such a mode, the number of laminated dye layers is raised in such a way that the recording of the recording medium has a greater thickness. Furthermore, in the recording medium or in the printing in which the information consists of a lamination of dye layers, the respective dyes constituting the information are independent of each other. Accordingly, colorants in the dye layers can be identified by a person attempting to falsify or alter. - Patent Document 1: Japanese Patent Application Number H10-297075 - Patent Document 2: Japanese Patent Application Number H07-125403 Patent Document 3: Japanese Utility Model Examined Publication Number H07-83987 Patent Document 4: Japanese Utility Model Open Application Number Sho 60-187085 Patent Document 5: Japanese Patent Application Number H008-151545 Patent Document 6: Japanese Patent Application Number H10-129107 - Patent Document 7: Japanese Patent Application Number H09-240136 DISCLOSURE OF THE INVENTION A clear interface it generally exists between laminated layers in a laminated configuration of the prior art. Several light beams are refracted at the time of incidence / reflection of light at the interface. It can be difficult to read a large amount of information accurately if refraction is not taken into account. In addition, the laminated ink layers can be detached due to the interface. On the other hand, in the case in which an ink layer capable of emitting fluorescence in a region of visible light is used (hereinafter referred to as "Xlayer of fluorescent ink"), the fluorescent emission can not be observed if places a layer of black ink that absorbs all wavelengths in the region of visible light, of carbon black or the like, as the top layer, so in this case, a layer of fluorescent ink is placed in the ink layer black to clarify its presence, or an image in the black ink layer is disturbed.In another method, to avoid such a configuration In the case of lamination, a regional separation of the respective ink layers can be effected on the surface of the recording medium and a silk-screen printing must be carried out. Therefore, a first object of the present invention is to obtain an image and a method of evaluation in each of which, in the case in which a fluorescent ink layer is used, its fluorescence emission property is used as a means of evaluation , the layer can ensure its fluorescence emission property even when a fluorescence emission wavelength splices the absorption wavelength of a dye in a layer of laminated ink. Another object of the present invention is to maintain a recording density of the upper or constant constant ink layer in such a manner that the presence of the fluorescent ink layer can not be observed, preferably to allow an image of an ink layer top is clear at this time. In addition, a second object of the present invention is to offer a novel system that can not be obtained conventionally, and an image, a recording method, a valuation method,. or a method of recognition of information used for the system by conducting full investigations on the relationship between a fluorescent ink layer and a layer of ink to be laminated to provide a novel image and a method of evaluation novel each using fluorescence property as well as a recording method and an ink used there. Furthermore, a third object of the present invention is to offer an image, a recording method, an information recognition method, and an information recognition system capable of providing an impression or the like that can easily record a large amount of information without Laminate a large number of layers of ink, and that makes forgery, alteration or the like difficult. A fourth object of the present invention is to provide a novel image, a novel recording method, a novel evaluation method, or a novel information recognition method capable of displaying different images with visual recognition and recognition through optical amplification as image evaluation paying attention to a relative positional relationship between a layer of fluorescent ink or a fluorescent particle in it and a layer of ink to be laminated or a dye applied there. Other objects of the present invention will be understood from the following description. The present invention is contemplated to achieve each and every one of the aforementioned objects and is shown, by way of example, through the following configurations. According to a first aspect of the present invention, an image is provided which has a laminated portion where Multiple types of ink layers are laminated in a recording material, characterized in that: the laminated portion has a second layer of color ink laminated in a first ink layer having a fluorescence emission property; and part of the first ink layer is exposed in the form of dots in relation to the second ink layer. With this configuration, the presence of a portion of fluorescence emission is hardly observed, and a density fluctuation in the color ink layer is avoided, so that the conventional drawback does not occur in an image. According to a second aspect of the present invention, there is provided an image in accordance with the first aspect of the present invention, characterized in that: the fluorescence emission property is obtained through a fluorescence scattering element in a first ink to form the first ink layer; and the average particle size of the fluorescence scattering element is greater than an average particle size of a dye in a second ink to form the second ink layer. According to a third aspect of the present invention, there is provided an image in accordance with the first aspect of the present invention, characterized in that the thickness of the first dye layer is greater than the thickness of the second ink layer. The exhibition in form of points described above can be formed more effectively by using one of these characteristics or by combining two or more of them. Examples of a component that makes the effects of the present invention more remarkable include the following configurations: (1) the first ink layer employs a wavelength outside the visible wavelength region of light as excitation energy for emitting fluorescence of a specific color in the wavelength region of visible light, (2) the wavelength region of an emission spectrum of the first ink layer is in the wavelength region of a spectrum of absorption of the second ink layer, (3) the first ink layer contains multiple lanthanoids, and uses an infrared wavelength light as excitation energy to emit fluorescence in the wavelength region of visible light, (4) the second layer of ink is a layer of a color based on black containing black smoke, (5) the image has the first layer of ink in which the second layer of ink is not laminated in a portion n adjacent to the laminated portion, (6) the image has a portion of the second ink layer that does not have the first ink layer in a portion adjacent to the laminated portion, and forms information resulting from the second ink layer, (7) the recording material has a transparent layer at least in the second layer of ink in the laminated portion and in the dotted portion of the first ink layer, and (8) a thickness of the transparent layer is greater than the total thickness of the layers of ink formed in the recording material. According to a fourth aspect of the present invention, there is provided an image having a laminated portion in which multiple types of ink layers are laminated in a recording material, characterized in that: the laminated portion has a second layer of color ink laminated in a first ink layer having a fluorescence emission property; a part of the first ink layer is exposed in dotted form relative to the second ink layer; the thickness of the first ink layer is greater than the thickness of the second ink layer; and the wavelength region of an emission spectrum of the first ink layer is in the wavelength region of an absorption spectrum of the second ink layer. In addition, the recording material has a transparent layer at least in the second ink layer in the laminated portion and in the dotted exposure portion of the first ink layer. The transparent layer has an effect of providing refraction in such a way that the emission of the dotted exposure portion causing a dotted light emission can be observed as surface emission or an effect of smoothing the surface of the image.

According to a fifth aspect of the present invention, a recording method is provided, which includes the steps of: forming a first ink layer of a first ink having a fluorescence scattering element in a recording material; and forming a second ink layer of a second ink having a colorant such that a portion of the first ink layer is exposed in dotted form relative to the second ink layer. According to a sixth aspect of the present invention, a recording method is provided which includes the steps of: forming a first ink layer of a first ink having a fluorescent dispersion element in a recording material; and forming a second ink layer of a second ink having a colorant in the first ink layer, which is characterized in that the average particle size of the dispersion element dispersed in the first ink is greater than the average particle size of an ink. dispersion element dispersed in the second ink to the extent that a portion of the first ink layer is exposed in dotted form relative to the second ink layer. According to a seventh aspect of the present invention, a recording method is provided which includes the steps of: forming a first ink layer of a first ink having a fluorescent dispersion element in a recording material; and form a second ink layer of a second ink having a dye in the first ink layer, characterized in that the applied thickness of the first ink in the recording material is greater than an applied thickness of the second ink to such a degree that a part of the first ink layer Ink is exposed in dotted form relative to the second ink layer. According to any of these methods, the image of the present invention can be obtained with certainty. Preferred examples of specific conditions for these methods include: (1) each of the first ink and the second ink is a photoetched type printing ink containing an aqueous liquid or an oil-based liquid and a film material; (2) each of the first ink and the second ink is an ink for offset printing, letterpress printing, or silk screen printing containing a solvent and an oxidation polymerizable film-forming material; and (3) each of the first ink and the second ink is an ultraviolet light curing printing ink containing a solvent and an oxidation polymerizable film forming material. According to an eighth aspect of the present invention, there is provided an information recognition method, which includes irradiating an image having a first layer of ink laminated to a recording material and having a fluorescence emission property for to emit fluorescence of a specific color in the wavelength region of visible light by using a wavelength outside the region of wavelength of light visible as excitation energy and a second layer of color ink laminated on the first layer of ink, and wherein a part of the first layer of ink is exposed in dotted form relative to the second layer of ink, with a wavelength outside the visible wavelength region of light, to observe emission of Fluorescence of the first layer of ink due to dotted exposure. According to a ninth aspect of the present invention, there is provided an information recognition system for carrying out an authenticity assessment of a first product having an image, having a first layer of ink laminated on a recording material and having a property of fluorescence emission to emit fluorescence of a specific color in the wavelength region of visible light by using a wavelength outside the region of wavelength of light visible as excitation energy and a second layer of ink color laminated in the first ink layer, and wherein a part of the first ink layer is exposed in dotted form relative to the second ink layer, relative to a second product that does not have the image, by irradiation of the image with a wavelength outside the wavelength region of visible light to assess whether the first product is a genuine product based on the presence of the fluorescence emission of the first ink layer. According to a tenth aspect of the present invention, an ink is provided to form a first layer of ink having a fluorescence emission property, onto which a second layer of color ink is laminated and a part of which is exposed in color. dotted shape relative to the second ink layer, which contains colorant containing multiple lanthanoids. In addition to the tenth aspect of the present invention, it is preferable that: (1) the ink containing the dye containing the lanthanum manifolds has a fluorescence emission property to emit fluorescence of a specific color in the wavelength region of light visible by using a wavelength outside the region of visible wavelength of light as excitation energy; (2) the ink containing the colorant containing the multiple lanthanoids is an ultraviolet light curing ink; or (3) the ink containing the colorant containing the multiple lanthanoids is an oil-based ink. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a drawing of an image in accordance with the present invention as seen from the surface of the image; Figure 2 is a cross-sectional drawing of the image of Figure 1; Figure 3 is a drawing showing a state wherein a dye used for the first ink layer is fixed in the recording material; and Figure 4 is a drawing showing a state in which a transparent coating layer is placed on a more external surface. PREFERRED MODALITY OF THE INVENTION Now, the present invention will be described in more detail through preferred embodiments. An image of the present invention is an image formed by splicing multiple layers of ink, characterized in that: a first layer of ink is formed in a recording material through a first ink having fluorescence emission property; a second layer is formed in the first ink layer through a second ink; the first ink layer is exposed in dotted form in the second ink layer; and the image is formed by at least one of the first ink layer. With this feature, the optical density of the second ink layer is comparable to the optical density of a composite image of the second ink layer alone, and is sufficient for an image, and the first ink layer can not be observed. In addition, the emission can to be observed in the form of a dotted emitter portion when the image is optically amplified at an amplification of 5 to 10 such that the emission can be observed in the form of a emitting portion having a line shape or a plane shape (the following examples without explanations meet this condition and offer this effect). Figure 1 shows an image of the present invention when viewed from a printed surface. In the figure, a portion 1 corresponds to a part of an ink layer formed through a first ink. A portion 2 corresponds to an ink layer portion formed through a second ink. The part 1 of the first ink layer is exposed in dotted form in the second layer of ink 2. The dotted exposure defines a relative positional relationship between a layer of fluorescent ink or a fluorescent particle therein and a layer of ink to be laminated or a dye applied to it. Even if the ink layer is laminated, the emission of fluorescence can be observed in the form of a dotted emitting portion through titration according to the amplification through a lens or the like. At the same time, the fluorescence emission may be observed in the form of a emitting portion having a line shape or a plane shape. In addition, Figure 2 is a cross-sectional view of the image of Figure 1. In the figure, portion 1 corresponds to to the first ink layer portion, the portion 2 corresponds to the second ink layer portion. In addition, interrupted lines indicate the thickness of the second ink layer (thickness of a printed coating). Since the thickness of the second ink layer is less than the thickness of the first ink layer, the second ink layer is fixed on each space between protrusions of the first ink layer. Accordingly, the optical density of the second ink layer (e.g., 1.40) is almost equal to the optical density of the second ink layer alone (e.g. 1.43).

In the description above, when the first ink layer is formed through an ink that uses an infrared wavelength light as excitation energy to emit fluorescence, the image can be used in a larger number of security applications. In addition, when the first ink layer is formed through an ink that uses an infrared wavelength light as excitation energy to emit fluorescence in the wavelength region of visible light, the image can be easily recognized. Further, when the wavelength region of an emission spectrum of the first ink layer is in the wavelength region of an absorption spectrum of the second ink layer, it becomes possible to exploit the characteristics of the image. of the present invention. That is, the image that is difficult to recognize visually in Ordinary cases due to a large printed area of the second ink layer, can be observed under a microscope or through irradiation with infrared wavelength light when the first ink layer is formed through the ink above. When a dye of the first ink forming the first ink layer is a pigment, the first ink can be easily exposed in dotted form to the second ink layer. The colorant of the first ink is especially preferably an inorganic pigment. The dye of the first ink is also particularly preferably a dye containing multiple lanthanoids. When a dye of the second ink forming the second ink layer is a non-fluorescent dye, the fluorescent property of the first ink layer can easily be observed. The colorant of the second ink is preferably a pigment, particularly preferably an inorganic pigment. Further, when the dye of the second ink layer is carbon black, the first ink layer can be easily recognized since the second ink layer absorbs most of the visible light. The method of recording the first invention is a method of recording to form an image by splicing multiple layers of ink, the method includes: forming a first ink layer of a first ink having fluorescence emission property in a recording material; and forming a second ink layer of a second ink in the first ink layer to have a space. The recording method of the present invention is a recording method for forming an image by splicing multiple layers of ink, the method includes: forming a first ink layer of a first ink having fluorescence emission property in a recording material; and forming a second ink layer of a second ink in the first ink layer, wherein the average particle size of a dispersion element dispersed in the first ink is greater than the average particle size of a dispersion element dispersed in the ink. the second ink. The difference in average particle size is preferably such that the fluorescent particles have an average particle size of 0.5 μm or more to about 3 μm (preferably 1 μm or more to 2 μm or less, and, is very especially preferable that the particles having an average particle size within this range represent 40% or more of the first ink), while a colored dye has an average particle size of the order of 10 ~ 9 m (nm). Specifically, the fluorescent particles are preferably inorganic pigment particles, and the colored dye is preferably an organic dye or an organic pigment. The recording method of the present invention is a method of recording to form an image by splicing several layers of ink, the method includes: forming a first ink layer of a first ink having fluorescence emission property in a recording material; and forming a second ink layer of a second ink in the first ink layer, wherein the thickness of the first ink layer formed in the recording material (thickness of a printed coating) is greater than the thickness of the second layer of ink. The ink used for imaging contains a dye such as pigment, and a dispersing agent to maintain the dispersion state of the dye in a liquid, or a film or binder material to fix the dye on the printing paper (hereinafter, the term "printing paper" also refers to a recording medium), after the application of the inks for recording information. Examples of the recording medium include: usual commercially available recording media such as pulp, fibers, resins, aives, and corrugated cardboard, and those obtained by subjecting the aforementioned recording means to a coating process for the color. The image of the present invention is formed in accordance with any of the various printing modes. For example, as conventionally known, a liquid medium for ink when the image is formed in accordance with the ink jet method is mainly water or a mixture of water and a water soluble organic solvent. Examples of liquid water soluble medium include: water soluble alcohols; and water-soluble polyhydric alcohols such as ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, and glycerin. In addition, to maintain the dispersibility of a pigment in an aqueous medium, the liquid medium contains any of the pigment dispersants such as, for example, various surfactants and water-soluble resins. Representative examples of the water-soluble resins include acrylic resins having a water-soluble group such as, for example, carboxyl group or a quaternary ammonium group. Further, when the image of the present invention is formed through a gravure ink, for example, an aqueous gravure ink, an emulsion consisting of water containing an organic solvent solvent in water is used for the ink as for example alcohol and a water-soluble resin or a water-insoluble resin, or the like. Examples of resins include acrylic resins, vinyl chloride-vinyl acetate copolymer resins, vinyl ethylene actetate copolymer resins, polyester resins, polyamide resins, cellulose-based resins, polyurethane resins and chlorinated polypropylene resins. The ink also contains a crosslinking agent or the like as required. Examples of an organic solvent when the image is formed through an oil-based photogravure ink include methyl ethyl ketone, toluene, xylene, cyclohexanone, cyclohexane, and alkyl substituted cyclohexane. Examples of a material formed of film (binder) for the ink include the water-insoluble resins above. The oil-lowered ink also contains a crosslinking agent as required. Further, when the image of the present invention is formed through offset printing, letterpress or screen printing, a liquid medium for ink used for each print contains a petroleum-based solvent and a film-forming material having a double bond. polymerized by oxidation such as for example semi-drying oil, drying oil, a phenol resin denatured with rosin, a petroleum resin, or an alkyd resin. Any of the liquid media mentioned above (varnish and vehicle) for ink is conventionally known and any of the other liquid media conventionally known can be used for an ink for the formation of the image of the present invention. Even though the liquid ink medium used for representative printing modes has been presented by way of example above, liquid ink media used for other printing methods are also applicable. The main feature of the present invention is that a fluorescent dye is used for the first ink as an ink dye for any of the conventionally known printing modes mentioned above. The term "fluorescent dye" refers to a dye that uses light having a certain wavelength as the excitation energy to emit light in a different wavelength region that does not include the wavelength for excitation. Among these dyes, a pigment having a high strength property is preferred. A dye can be used in combination according to the applications and the purposes. Within the framework of the present invention, a fluorescent dye having a fluorescent emission property and used for ink can be used, which generates a spectrum when excited by ultraviolet light and then returns to a lower energy level. In addition, a peak spectrum is found in the wavelength region of blue, green, red, or the like. The dye is obtained by the addition a small amount of metal (such as copper, silver, manganese, bismuth or lead) as an activator to intensify the emission to a high purity fluorescent material such as zinc sulphide or an alkaline earth metal sulfide; and sintering the mixture at an elevated temperature. The hue, brightness, and degree of color attenuation of an ultraviolet fluorescent pigment can be adjusted according to a combination of a host crystal and an activator. Specific examples of the fluorescent dye include Ca2B509Cl: Eu2 +, CaW04, ZnO: Zn, Zn2Si04: Mn, Y202S: Eu, ZnS: Ag, YV04: Eu, Gd202S: Tb, La202S: Tb, Y3Al50? 2: Ce, Sr5 (P04) 3 Cl: Eu, 3 (Ba, Mg) 0-8Al203: Eu. Zn2Ge0: Mn, Y (P, V) 04: Eu, 0.5MgF2-3.5MgO-GeO2: Mn, ZnS: Cu, and ZnS: Mn. Each of them is used alone, or several types of them are arbitrarily selected and mixed before use. Fluorescent spectra of these fluorescent dyes have peaks outside the wavelength region of blue, green, red, or the like, and can be appropriately selected according to a desired fluorescent spectrum. An infrared fluorescent pigment to be used in the present invention is a pigment excited with infrared light (from about 800 to about 1,200 nm) to emit visible light (from about 400 to about 800 nm). The infrared fluorescent pigment is a material fluorescent that has an extremely special excitation mechanism. Specifically, multiple photons of infrared light that have a small energy are used to excite a visible light emission. The excitation mechanism is classified into two types. One of them, observed in many host crystals that use Er3 +, Ho3 +, (rare earth) and the like as activators, is such that the excitation is carried out through a multiple stage excitation in activator ions. The other type is such that Er3 +, Tm3 +, Ho3 +, or similar as emission center is excited at a higher level through multiple times of resonance energy transfer from a sensitizer, ie, an energy transfer in multiple stages that results from the absorption of infrared light rays by a Yb3 + sensitizer. Specific examples of the sensitizer include YF3: Yb + Er, YF3: Yb + Tm, and BaFCl: Yb + Er. The non-fluorescent dye to be used in the present invention is preferably a pigment. Examples of an ordinary pigment include: inorganic pigments such as titanium oxide, zinc white, ultramarine blue, iron blue, chromium oxide, and iron oxide; insoluble azo pigments such as arylides, disazo pigments of acetylacetic acid arylide, and azo pyrazolone pigments; soluble azo pigments such as lake red C and brilliant carmine 6B; organic pigments such as copper phthalocyanines, quinacridones, indigo pigments * thioindigo, indantrones, and perinone-pyrilenene pigments; and various pigments used for conventional printing ink such as carbon black. In each combination of pigments, the ordinary pigment to be used is preferably a pigment having a slight absorption or no absorption in the infrared portion and in the ultraviolet portion. For example, when a black pigment absorbing light in an entire wavelength region is used, it is preferably used in a low concentration (less than 1% by mass). In addition, any of the pigments mentioned above is preferably used in combination with a pigment that reflects light in a region of full wavelength such as for example a white pigment. The use of the white pigment efficiently improves the emission of the ultraviolet fluorescent pigment and / or the ultraviolet fluorescent pigment without allowing the ultraviolet light and / or the infrared light with which the printed layer is irradiated to pass through the recording paper. In addition, an ordinary color pigment to be used is preferably a pigment having a hue difference from the emission wavelength of the ultraviolet fluorescent pigment and / or the infrared fluorescent pigment. In a combination of this type, irradiation of a print with ultraviolet light and / or infrared light provides an observer with a significantly different visual appreciation. As a result, a large amount of information can be recorded, falsification, alteration and modification of the information becomes difficult and a false product can be easily detected. The ink to be used within the framework of the present invention can be obtained by mixing required components and dispersing a pigment in the liquid medium according to a production method adapted to its printing mode. The ultraviolet fluorescent pigment and the infrared fluorescent pigment settle easily in the ink due to their high specific gravity. Accordingly, they are preferably subjected to a redistribution treatment before use. Even though a method of printing through the ink to be used of the present invention is not particularly limited, specifically, the ink is suitable for inkjet, gravure, offset type printing, letterpress printing, silk screen printing, or the like. Examples of the paper for printing (recording medium) include: values, bonuses, gift certificates, cards, train tickets, admission tickets, and the like; synthetic paper; and plastic films. The examples also include an easily imitated product itself, and a case or Corrugated cardboard box for the product, in such a way that the printing paper is not particularly limited. The printing on the recording paper (recording medium) may be such that several images (information) are recorded through the ink above alone, or it may be such that a specific image is formed in part from an ordinary printing according to the method of the present invention. For example, values can be formed by means of the ordinary printing ink, and only a part of its image can be formed according to the method of the present invention. A fluorescent pigment is relatively expensive. A problem associated with cost can be avoided by printing a part of the image, for example a part of a large number of letters to be printed with the method of the present invention. Next, an example of a recording method of the present invention will be described with reference to the drawings. Figure 1 shows an image of the present invention when viewed from its surface. In the figure, a portion 1 corresponds to a portion in which a first ink layer is formed. A portion 2 corresponds to a portion in which a second layer of ink is formed. A part of the first ink layer is exposed in dotted form on the surface of the second ink layer.

Figure 2 is a cross-sectional drawing of the image of Figure 1. In the figure, a region 1 corresponds to the portion in which the first ink layer is formed. A region 2 corresponds to the portion in which the second ink layer is formed. In addition, interrupted lines indicate the thickness of the second ink layer (the thickness of a printed coating). Since the thickness of the second ink layer is less than the thickness of the first ink layer, the second ink layer is fixed on each space between protrusions of the first ink layer. Figure 3 shows a state in which a dye used for the first ink layer is fixed in a recording material. In the figure, a portion 1 corresponds to the first ink layer portion. A portion 2 corresponds to a second portion of the ink layer. In addition, interrupted lines indicate the thickness of the second ink layer. The second ink layer is fixed on each space between projections of the first ink layer. Figure 4 shows a state in which a transparent coating layer 3 is placed on a more external surface. When the transparent coating layer is placed on the outermost surface, irregularities in the surface of the image are eliminated, so that the quality of the printing of the quality of the image is. it becomes satisfactory. In this case, when uses a film-like layer as the transparent coating layer, a large number of small air bubbles that normally can not be observed, can be generated between the surface of the image and the film. As a result, it becomes difficult to assess the state of a printed portion from the surface of the image, which is preferable when an image with security is required. In addition, the use of the recording method above results in the formation of a good image, wherein a second layer of ink is formed through a second ink in a first layer of ink formed through a first ink having a property. of fluorescence emission in a recording material with the second ink layer being exposed in dotted form on the first ink layer. The present invention also offers a method of recognition of information that is characterized in that it includes the irradiation of the image described above with ultraviolet light and / or infrared light to recognize the information and an information recognition system characterized in that it includes the image described above, a light source for irradiating the image with ultraviolet light and / or infrared light, and a means for recognizing a nuance generated by irradiation using the light source. The present invention offers an image formed by splicing multiple layers of ink, comprising a first ink layer formed in a recording material through a first ink having fluorescent emission property and a second ink layer formed in the first ink layer through a second ink wherein the first ink layer is exposed in dotted form on the second ink layer, and the image is formed through at least one of the first ink layer and second ink layer. In addition, the present invention provides an image formed by splicing multiple layers of ink, comprising a first ink layer formed in a recording material through a first ink having a fluorescent emission property and a second ink layer formed in the ink. First layer of ink through a second ink, wherein the first layer of ink is exposed in dotted form in the second layer of ink, the image is formed through at least one of the first layer of ink and second layer of ink, and the thickness of the first image in the recording material is greater than the thickness of the second image. In addition, the present invention provides an image formed by splicing multiple layers of ink, comprising a first ink layer formed in a recording material through a first ink having a fluorescent emission property and a second ink layer formed in the ink. first layer of ink by means of a second ink, in where the first ink layer is exposed in dotted form in the second ink layer, the image is formed through at least one of the first ink layer and second ink layer, and a transparent layer is formed on the surface outermost of the image formed by splicing the multiple layers of ink in the recording material. In addition, the present invention provides a recording method for forming an image by splicing multiple layers of ink, the method includes the steps of forming a first ink layer of a first ink having a fluorescent emission property in a material of recording and forming a second ink layer of a second ink in the first ink layer, wherein the image is formed by at least one of the first ink layer and second ink layer, and the second ink layer is formed in such a way that it has a space. In addition, the present invention provides a recording method for forming an image by splicing multiple layers of ink, said method comprising the steps of forming a first ink layer of a first ink having fluorescent emission property in a recording material. and forming a second ink layer of a second ink in the first ink layer, wherein the image is formed through at least one of the first ink layer and second ink layer, and the The average particle size of dispersion elements dispersed in the first ink is greater than the average particle size of dispersion elements dispersed in the second ink. In addition, the present invention provides a recording method for forming an image by splicing multiple layers of ink, the method comprising the steps of forming a first ink layer of a first ink having fluorescent emission property in a recording material. and forming a second ink layer of a second ink in the first ink layer, wherein the image is formed by at least one of the first ink layer and second ink layer, and the applied thickness of the first ink on the ink layer. Recording material is greater than the applied thickness of the second ink. In addition, the present invention offers a method of information recognition that includes the irradiation of an image formed by the fact of splicing multiple layers of ink with ultraviolet light and / or infrared light to recognize the image information, the image, has a first ink layer formed by means of the first ink having fluorescent emission property in a recording material and a second ink layer formed by means of a second ink in the first ink layer, wherein the first ink layer is exposed in dotted form on the second layer of ink, and the image is formed by minus one of the first ink layer and second ink layer. In addition, the present invention provides an information recognition system comprising an image formed by splicing multiple layers of ink, the image having a first ink layer formed by means of a first ink having fluorescent emission property in a recording material of a second ink layer formed by means of a second ink in the first ink layer, the first ink layer is exposed in dotted form in the second ink layer, the image is formed by at least one of the first ink layer and second ink layer; a light source for irradiating the image with ultraviolet light and / or infrared light; and a means to recognize a nuance generated by irradiation using the light source. EXAMPLES Below, the present invention will be described in greater detail through examples. Unless otherwise indicated, the terms "part" and "%" in the following description refer to "parts by mass" and "% by mass", respectively. (Example 1) A styrene-acrylic acid copolymer (having a weight average molecular weight of about 7,000 and an acid value of about 200), an amount The predetermined potassium hydroxide that is required to neutralize the copolymer, and water were stirred and mixed while the temperature of the mixture was maintained at about 60 ° C, to thereby prepare a 10% aqueous solution of the styrene-acid copolymer. acrylic. The aqueous solution of the styrene-acrylic acid copolymer prepared in this way was used as a dispersing agent to prepare a pigment dispersion element with the following composition. Aqueous solution 10% styrene-acrylic acid copolymer 20 parts Infrared fluorescent pigment (YF3: Yb: Er) 3 parts C.I. Pigment Yellow 138 7 parts Glycerin 20 parts Dithylene glycol 20 parts Triethylene glycol 10 parts Water 20 parts These materials were fed in a batch-type vertical sand mill. Glass beads with a diameter of 1 mm were loaded as media in the mill, and the whole was subjected to a dispersion treatment for 3 hours while cooling with water. The resulting pigment dispersion was subjected to a first centrifugal separation treatment (10,000 rpm, 30 minutes) to remove particles thick, and then the resulting product was diluted with water by a factor of 2 to prepare an ink. In addition, the ink was subjected to a second centrifugal separation treatment (10,000 rpm, 30 minutes) to remove coarse particles, and then the resulting product was diluted with a liquid medium to provide a predetermined composition. Thus, an ink for printing with ink injection to be used within the framework of the present invention was prepared. On the other hand, an inkjet printing ink was prepared in the same manner as described above except that only a yellow pigment (7 parts) was used and no infrared fluorescent pigment was used in the ink composition above. A solid image was printed on plain paper by using ink that did not contain infrared fluorescent pigment and a BJF600 printer (manufactured by Canon Inc.). Then, the letters "AB" (preferably the brand or the logo of a manufacturer for an authenticity assessment) were printed on the solid image by using the ink containing the infrared fluorescent pigment. Even though the printed product had a uniform yellow color under daylight, the letters "AB" could be clearly seen when the printed product was irradiated with infrared light of 800 to 1,200 nm in a dark room. The letters "AB" were also clearly observed when the printed product was irradiated with infrared rays in the same way as described above under daylight. (Example 2) The following components were fed to a batch-type vertical sand mill. Glass beads with a diameter of 1 mm were loaded as a medium in the mill, and the whole was subjected to a dispersion treatment for 3 hours while it was cooling with water. Thus, ink for gravure to be used in the present invention was prepared. The ink was almost free of stain and presented a white color. White pigment (titanium oxide) 2 parts Infrared fluorescent pigment (YF3: Yb: Er) 9 parts Ultraviolet fluorescent pigment (ZnS: Cu) 9 parts Methyl ethyl ketone 50 parts Toluene 50 parts Acrylic resin 30 parts The letters "genuine product" [ authentic product] were printed on part of wood-free paper by using ink. Afterwards, a scenic image was printed on the letters using ordinary inks for four-color gravure. Even when only the scenic image was observed in the light of day, the letters "genuine product" were clearly observed when the scenic image was irradiated with infrared light of 800 to 1,200 nm in a dark room. In addition, the letters "genuine product" appeared in the scenic image when the scenic image was irradiated with infrared rays in the same way as described above under daylight. (Example 3) The following components were fed in a batch-type vertical sand mill. Glass beads with a diameter of 1 mm were loaded as medium in the mill, and the whole was subjected to a dispersion treatment for 3 hours while it was cooling with water. Thus, Ink 1 was prepared for gravure to be used within the framework of the present invention. The ink showed a red color. Composition of the Ink 1 Infrared fluorescent pigment (YF3: Yb: Er) 10 parts C.I. Pigment Red 122 10 parts Methyl ethyl ketone 50 parts Toluene 50 parts Acrylic resin 30 parts Separately, Ink 2 and Ink 3 for gravure with the following compositions were prepared in the same manner as described above.

Composition of the Ink 2 C.I. Pigment Red 122 10 parts Methyl ethyl ketone 50 parts Toluene 50 parts Acrylic resin 30 parts Composition of the Ink 3 Infrared fluorescent pigment (YF3: Yb: Er) 10 parts Methyl ethyl ketone 50 parts Toluene 50 parts Acrylic resin 30 parts A solid image 1 was formed on a polyester film by using the Ink 1 described above. Then, images 2 and 3 were formed in the polyester film by overprinting of Ink 2 and Ink 3 described above in the order of Ink 2 - > Ink 3 and Ink 3 - > Ink 2 in such a way that the pigment concentrations were the same. Images 1 to 3 were observed under daylight or while irradiated with an infrared ray of 800 to 1,200 nm under daylight. As a result, image 1 was observed very clearly in any case. (Example 4) The following components were fed in a batch-type vertical sand mill. Glass beads with a diameter of 1 mm were loaded as medium in the mill, and the whole was subjected to a dispersion treatment for 3 hours while it was cooling with water. Thus, Ink 1 was prepared for gravure to be used within the framework of the present invention. The ink showed a red color. Composition of Ink 1 Infrared fluorescent pigment (YF3: Yb: Er) 10 parts Methyl ethyl ketone 50 parts Toluene 50 parts Acrylic resin 30 parts Separately, Ink 2 and Ink 3 were prepared for gravure, which had the following compositions in the same manner as described above. Composition of Ink 2 C.I. Pigment Red 122 10 parts Methyl ethyl ketone 50 parts Toluene 50 parts Acrylic resin 30 parts Ink Composition 3 Ultraviolet fluorescent pigment (Flurol BK) 10 parts Methyl ethyl ketone 50 parts Toluene 50 parts Acrylic resin 30 parts A solid image 1 was formed on a polypropylene film by using the Ink 1 described above. Then, solid images 2 and 3 were formed on the polypropylene film by overprinting of Ink 2 and Ink 3 described above in the order of Ink 2 - > Ink 3 and Ink 3 - > Ink 2 in such a way that the pigment concentrations were the same. Images 1 to 3 were observed under daylight or while being irradiated with black light rays under daylight. As a result, image 1 was observed very clearly in any case. (Example 5) The following resin and the following oil were dissolved in the following solvent at 220 ° C under nitrogen, and the resulting solution was stirred under heating for 1 hour to prepare a varnish. Denatured phenol resin with rosin 40 parts Soybean oil 25 parts Petroleum based solvent (AF Solvent 4) 35 parts The mixture of the following pigment was added to the varnish prepared in accordance with that described above in such a way that the pigment concentration was of twenty%. Then, the mixture was milled regularly by using sand mill to prepare an offset printing ink to be used in the present invention.

CO. Pigment Red 122 10 parts Infrared fluorescent pigment (YF3: Yb: Er) 10 parts On the other hand, an offset printing ink was prepared in the same way as described above except that only the red pigment (10 parts) was used and no infrared fluorescent pigment was used in the ink composition above. Encrypted letters were printed on plain paper by using an offset printing machine using the ink above that contained the infrared fluorescent pigment. A solid image was subsequently printed to cover all the ciphered letters by using the above ink which did not contain infrared fluorescent pigment. Even though the entire surface of the printed product had a uniform red color under daylight, only the cipher letters were clearly observed when the printed product was irradiated with infrared light of 800 to 1,200 nm in a dark room. The cipher letters were also clearly observed when the printed product was irradiated with infrared rays in the same way as described above under daylight. Offset printing ink can also be used for letterpress printing or silk screen printing. In addition, information recorded on the printed product obtained by using the ink of Example 5 it was read by employing a scanner having a device for applying a specific infrared light adapted to the infrared fluorescent pigment and a device for reading the emission information (encryption). As a result, the information was read satisfactorily. In addition, the information read on a printed product formed on the surface of a recording medium by using the ink of Example 5 by varying the thickness of an infrared light absorption portion was read by using a scanner equipped with a device for applying a specific infrared light with an excitation wavelength adapted to the infrared fluorescent pigment and a device for reading the emission information. As a result, the information corresponding to the thickness change of the infrared light absorption portion was read. (Example 6) The following components were sufficiently mixed and dispersed by the use of a three-roll machine to prepare a curing ink with ultraviolet light. Composition of Ink 1 Infrared fluorescent pigment (YF3: Yb: Er / average particle size: 2 μm) 50 parts parts polyester acrylate Hydroxyethyl methacrylate 13 parts Hydroxymethyl propiophenone 7 parts Ink composition 2 Carbon black (average particle size: 500 nm) 20 parts Polyester acrylate 45 parts Methacrylate and hydroxyethyl 25 parts Hydroxymethyl propiophenone 10 parts Letters were printed on Yupo paper by using the Ink 1 described above and were subjected to Irradiation with UV light to form an image 1. In addition, a solid image was formed sequentially by using Ink 2 in such a way that the solid image could splice a part of the image 1 and a printed thickness of ink 2 was less than a printed thickness of the Ink 1. After this, the resulting product was subjected to irradiation with UV light to form an image 2, thereby obtaining a final image 3. When the final image 3 was observed under daylight, only a solid black image was observed 2. When the When the image 3 was irradiated with infrared light from 800 to 1000 nm in a dark room, the image 1 was observed which includes the portion in which it is connected with the image 2. A transparent laminated film with a greater thickness than the total applied thickness of Ink 1 and Ink 2 was laminated on the image 3 obtained in accordance with that described above. After this, the resulting product was irradiated with infrared light of 800 to 100 nm in a dark room. As a result, the image 1 that includes the portion that connects with the image 2 was clearly observed. In particular, no differences were observed between the portion of the image 2 that splices with the image 1 and the portion of the image 2 that does not splice with the image 1 compared to the case before lamination of the transparent laminated film. (Example 7) The portion in which the image 1 and the image 2 were spliced together in the final image 3 of example 6 was observed with a microscope at an amplification e "x 10". As a result, the Ink 2 used to form the image 2 was observed dotted on the portion where image 1 was printed. In addition, the portion was irradiated with infrared light of 800 to 1000 nm in a dark room. As a result, the image 1 formed by means of the ink 1 was observed dotted on the image 2 formed by means of the ink 2. As described above, according to the present invention an image, a recording method, a recognition method, and an information recognition system with which you can easily record a large amount of information without laminating a large number of layers of dye, and that complicates counterfeiting, alteration or the like. In accordance with what has bdescribed above, according to the present invention, a relative positional relationship betwa large number of fluorescent ink layers or a fluorescent particle therein and a layer of ink to be laminated or a colored dye therein can be clarified. As a result, even if the ink layer is laminated, a fluorescent emission in the form of a dot emission portion can be observed visually by titration according to an amplification by means of lens or the like, or in the form of an emission portion having the form of line or flat form. Accordingly, an image, a recording medium, a recognition method, and an information recognition system can be provided with which a large amount of information can be easily recorded, and which makes forgery, alteration or the like difficult. This application claims the priority of Japanese Patent Application Number 2003-413563 filed on December 11, 2003, which is incorporated herein by reference.

Claims (25)

1. CLAIMS 1. An image, comprising a laminated portion wherein several layers of ink are laminated to a recording material, wherein the laminated portion has a second layer of color ink laminated onto a first ink layer having emission property fluorescent, and a portion of the first ink layer is exposed in dotted form relative to the second ink layer.
2. 2. An image according to claim 1, wherein the fluorescent emission property can be obtained through a fluorescent dispersion element in the first ink to form the first ink layer, and an average particle size of the dispersion element fluorescent is greater than an average particle size of a dye in a second ink to form the second ink layer.
3. 3. An image according to claim 1 or 2, wherein a thickness of the first ink layer is greater than a thickness of the second ink layer.
4. 4. An image according to claim 1 or 2, wherein the first ink layer uses a wavelength outside a region of visible wavelength of light as excitation energy to emit fluorescence in a specific color in the region from wavelength of visible light.
5. 5. An image according to claim 4, wherein a wavelength region of an emission spectrum of the first ink layer is in a wavelength region of an absorption spectrum of the second ink layer. .
6. 6. An image according to claim 4, wherein the first ink layer contains multiple lanthanoids, and uses an infrared wavelength light as excitation energy to emit fluorescence in the wavelength region of visible light.
7. 7. An image according to claim 6, wherein the second ink layer comprises a layer of a color based on black containing carbon black.
8. 8. An image according to claim 1, wherein the image has the first ink layer wherein the second ink layer is not laminated at a portion adjacent to the laminated portion.
9. 9. An image according to claim 1 or 8, wherein the image has a portion of the second ink layer that does not have the first ink layer in a portion adjacent to the "laminated portion, and forms information resulting from the second ink layer
10. 10. An image according to claim 1 or 2, wherein the recording material has a transparent layer at least in the second ink layer in the laminated portion and in a dotted exposure portion of the first ink layer.
11. 11. An image according to claim 10, wherein a thickness of the transparent layer is greater than a total thickness of the ink layers formed in the recording material.
12. 12. An image, comprising a laminated portion in which several layers of ink are laminated to a recording material, wherein: the laminated portion has a second layer of a-color ink laminated onto a first ink layer having property of fluorescent emission; a part of the first ink layer is exposed in dotted form relative to the second ink layer; a thickness of the first ink layer is greater than a thickness of the second ink layer; and a wavelength region of an emission spectrum of the first ink layer is in a wavelength region of an absorption spectrum of the second ink layer.
13. 13. An image according to claim 12, wherein the recording material has a transparent layer at least in the second ink layer in the laminated portion and in a dotted portion of the first ink layer.
14. A recording method, comprising the steps of: forming a first ink layer of a first ink having a fluorescent dispersion element in a recording material; and forming a second ink layer of a second ink having a colorant such that a portion of the first ink layer is exposed in dotted form relative to the second ink layer.
15. A recording method, comprising the steps of: forming a first ink layer of a first ink having a fluorescent dispersion element in a recording material; and forming a second ink layer of a second ink having a colorant in the first ink layer, wherein an average particle size of the dispersion element dispersed in the first ink is greater than an average particle size of an ink element. dispersion dispersed in the second ink to the extent that a portion of the first ink layer is exposed in dotted form relative to the second ink layer.
16. 16. A recording method, comprising the steps of: forming a first ink layer of a first ink having a fluorescent scattering element in a recording material; and forming a second ink layer of a second ink having a colorant in the first ink layer, wherein an applied thickness of the first ink in the recording material is greater than an applied thickness of the second ink to such an extent that a portion of the first ink layer is exposed in dotted form relative to the second ink layer.
17. A recording method according to any of claims 14 to 17, wherein each of the first ink and second ink comprises a gravure ink containing an aqueous liquid or an oil-based liquid and a film-forming material. .
18. 18. A recording method according to any of claims 14 to 17, wherein each of the first ink and second ink comprises an ink for gravure, printing, typographic, or screen printing, containing a solvent and a forming material of polymerizable film by oxidation.
19. 19. A recording method according to any of claims 14 to 17, wherein each of the first ink and second ink comprises an ultraviolet-curable printing ink containing a solvent and an oxidation-polymerizable film-forming material.
20. 20. An information recognition method comprising irradiating an image having a first layer of ink laminated onto a recording material and having fluorescent emission property to emit fluorescence of a specific color in a region of wavelength of visible light by using a wavelength outside the region of wavelength of light visible as excitation energy and a second layer of color ink laminated on the first ink layer and wherein a part of the first layer of ink is exposed in dotted form relative to the second ink layer, with a wavelength outside the wavelength region of visible light, to observe the fluorescence emission of the first ink layer caused by a dotted exposure of the ink. the first layer of ink.
21. 21. An information recognition system for effecting an authenticity evaluation of a first product having an image having a first layer of ink laminated in a recording material and having fluorescent emission property to emit fluorescence of a specific color in a region of wavelength of visible light by using a wavelength outside the region of wavelength of light visible as excitation energy and a second layer of color ink laminated on the first ink layer and wherein a part of the first ink layer is exposed in dotted form relative to the second ink layer, relative to a second product that does not have the image, by irradiating the image with a wavelength outside the wavelength region of visible light to determine that the first product is a genuine product based on the presence of a fluorescent emission of the first ink layer.
22. 22. An ink for forming a first ink layer having fluorescent emission property wherein a second color ink layer is laminated and a portion of which is exposed in dotted form relative to the second ink layer, comprising a dye containing several lanthanoids.
23. 23. An ink according to claim 22, wherein the ink comprising the colorant containing the various lanthanoids has fluorescent emission property to emit fluorescence of a specific color in a visible wavelength region of light by the use of a length of wave out of the region of wavelength of light visible as excitation energy.
24. 24. An ink according to claim 22, wherein the ink comprising a colorant containing the various lanthanoids includes a curing ink with ultraviolet light.
25. 25. An ink according to claim 22, wherein the ink comprising the dye containing the various lanthanoids includes an oil-based ink.