JP6225481B2 - Scratch card - Google Patents

Description

  The present invention is a scratch card provided with a scratch concealment layer for concealing the secret information display part on the card base material, and the scratch concealment layer is provided so as to cover the secret information display part on the card base material. Therefore, the present invention relates to a scratch card that can conceal the secret information, and when the scratch concealment layer is scraped off by scratch, the secret information becomes visible.

  In particular, when the scratch concealment layer is scraped off, a clear hologram reproduction image appears in a form overlapping with the confidential information, and the design is excellent, and at the same time, it is easy to determine the authenticity of a counterfeit product or a modified product, and The present invention relates to a scratch card that can make forgery and alteration very difficult.

  In the present invention, the “card base material” means a plastic card itself that can be provided with a secret information display section, or a sheet having various sheets, cards, and other shapes capable of recording secret information. The material may be a plastic material, a metal material, or any other material, but at least as the scratch card of the present invention, the secret information can be formed and concealed, and the scratch concealment layer Can be embedded in the card substrate.

  Further, in the present invention, “secret information” means “information that should be disclosed only to rightful owners who can know the secret information”, and means for providing the “secret information” on the card base is , An appropriate printing method, a method using an ink jet method capable of forming individual information, and laser printing, etc., as well as any “information” that can be recognized at least visually, such as characters, figures, symbols, etc. Can be used.

  Of course, the “secret information” on the card base and another “information” carried by the scratch card (which may be confidential or disclosed), or those “information” The information may be synthesized by various information synthesizing means or the like (including encryption processing) to “form information disclosed to the right holder”.

  The portion where the “secret information” is provided on the card base is appropriately expressed as a “secret information” display unit, a “secret information” printing unit, or a “secret information” forming unit.

Further, in the present invention, “scratch” means an act of scraping the “target layer” with a coin, a nail, etc., and an act of partially or completely removing the “target layer”. To do. In particular, since the purpose is to visually recognize what is behind the “target layer”, even if “partial scraping” is used, all “target layers” in the “scored area” Is removed without leaving any shavings. (Hereinafter, this scratch operation is also referred to as “scratch-off”.)
In the present invention, the “high refractive index transparent resin layer” means “a transparent resin layer having a high refractive index”, and here, a transparent resin layer having a refractive index n of more than 1.7. .

Refractive index n is (more precisely phase velocity) true air speed of light medium speed of light (c) of (v) is represented by a value obtained by dividing, unless otherwise specified, the values of refractive index, sodium This is for light having a D-line wavelength of 589.3 nm.

  Furthermore, “providing so as to cover” that “the scratch concealment layer is provided so as to cover the relief hologram forming layer” of the present invention means “covering the secret information display part on the card substrate”. This is almost synonymous with “providing so as to cover” in the case of “providing a scratch concealment layer”, but “secret information” is completely visible to the “secret information” from the appearance of the scratch card. Scratch concealment layer will be provided so that it is not possible, but for relief hologram forming layer, it is only necessary to provide a scratch concealment layer on the relief hologram formation layer and embed these layers in the card substrate Of course, the scratch concealment layer is naturally not visible from the surface of the scratch concealment layer, but from the "detailed observation of the embedded cross-section", the scratch concealment layer Corresponding to the fact that some “layer” can be inferred behind, “scratch the cross section of this relief hologram forming layer so that it can be concealed. This means that the concealing layer is provided so as to wrap around to its cross section and then embedded in the card substrate.

  Therefore, it means that the scratch concealment layer is provided in a size that is at least one size larger than the area of the relief hologram formation layer, for example, about 0.5 mm to several mm so that the cross section of the relief hologram formation layer is hidden. In order to conceal the position of the relief hologram forming layer, it is not excluded to provide a scratch concealing layer that is twice to 10 times the size of the relief hologram forming layer.

  In the present specification, “parts” indicating blending are based on mass unless otherwise specified. The “hologram” includes those having a light diffractive function such as a diffraction grating.

(Main applications) In addition to the spread of communication networks and computer networks, the spread of computer terminals that transmit and receive data and their portability have progressed, and the proportion of tertiary industries in Japan has also grown rapidly, Furthermore, various services are also provided by public institutions.

  Tertiary industries include information and communications, transportation, postal, wholesale, retail, finance, insurance, real estate, goods rental, academic research or specialized technical services, lodging, food and beverage services , Life-related service industry, entertainment industry, education or learning support industry, medical or welfare-related business, electricity business, gas business, heat supply business, water service business, public service, barber beauty related business, complex service business, leisure service, rental service, outsourcing Services, transportation services, restaurant services, energy, entertainment, consulting, and other service industries are positioned as traders and public institutions involved in such tertiary industries, not only selling goods but also providing specific services. Since the company is also paying for it, the service to customers and consumers is different even when the goods are sold differently. To provide, or, customers and consumers (hereinafter, also referred to as customers, etc..) Fees and compensation from the (hereinafter also referred to as a fee, and the like.) Is often doing the recovery of.

  For example, as a method of collecting charges and consideration, a method of automatically deducting consideration corresponding to the service used from a bank account of a customer or the like, or a credit contract with a credit sales company in advance, The method of settlement of usage fees is a general form of collection of charges, etc., and is used for settlement of charges for public services such as electricity charges, gas charges, water charges, and various information provision services. Widely used as a method. In addition, the prepaid card sales form is also a popular way to collect charges for services that should be provided in the future. Collection of charges, fares, and other considerations Widely used.

  Furthermore, the “articles” to be sold are data terminal devices, personal computers, desktop PCs, online game machines, telephone line equipment, data line terminators such as facsimiles and modems, radio receivers, television receivers, etc. Devices (information devices), in particular portable communication devices (terminals) that are communication devices that can be carried and used, and portable information devices (terminals) that are portable and usable information devices, that is, portable music players, IC recorders , Portable DVD player, pocket computer, smart book, tablet PC, PDA, calculator, portable game console, digital camera, video camera, laptop computer, laptop computer, handheld computer, portable printer, portable scanner, portable modem, electronic dictionary, Electronic notebook, electronic book , Portable data terminal, mobile phone terminal, PHS terminal, pager terminal, portable radio, mobile TV, One Seg, wristwatch, pocket watch, hearing aid, handheld GPS, security buzzer, video phone, GPS receiver, car navigation terminal, remote control terminal , Electronic money, digital keys, digital locks, IC cards for digital cards, point cards, etc., which will be delivered to customers, such as music, movies, game software, etc. , Multimedia related content such as Web animation, etc. as these “articles”, download sales, cloud computing, music distribution, IP broadcasting, Internet broadcasting, Internet TV, Internet broadcasting network, Internet radio, podcast, Deo-on-demand, it is also widely used method of delivering using means such as a video sharing service.

  And, the “goods” that are the subject of these added values, and those that give customers “qualifications” and “rights” that can receive various “services” as described above, that is, their added value. Various types of cards are widely used as a medium for determining whether a person requesting receipt or use of a cardholder is a person who has a valid "qualification" or "right". It is used for.

  These cards are used in many fields as ID cards, membership cards, cash cards with a monetary value, credit cards, prepaid cards, commuter passes, coupon tickets, etc. Is steadily increasing. Among these, prepaid vouchers for providing services using the prepaid method, so-called prepaid cards, have a particularly high quantitative increase rate, and are widely used as prepaid amounts for a certain unit and value information for that amount can be used. It is popular.

  And on the card, value information and identification information are recorded as pattern or character information printed or printed on the card substrate, and a magnetic recording unit or optical recording unit provided on the card substrate, In some cases, it is recorded on the IC chip as machine-readable information, and various information corresponding to the application is held, and the information can be used in various situations.

  In a telephone card that can be said to be a representative of the prepaid card, value information and identification information are recorded on the telephone card itself, and each time the telephone card is used at a telephone terminal, the call charge is reduced from the value information recorded on the telephone card. However, after that, the balance was recorded again on the telephone card. After that, as a method for dealing with telephone card counterfeiting and alteration, only a random “number” was printed on the telephone card. The telephone card is assigned to the host computer that manages the issuance, registration, sale, use, deduction processing, deregistration, etc. of the telephone card. The so-called “scratch-off” that you can make a call for the amount of money used when accessing System telephone cards ", ie, a method of using the format telephone cards to be delivered the confidentiality of the permitted number (secret information.) Have been put into practical use, increasingly also the card issuing quantity.

  In this system, if a license number is leaked at the distribution stage, it will only cause troubles such as illegal service receipt by a person who obtained the license number illegally, and the inability to provide legitimate use to authorized buyers. In addition, there is no longer any means to determine whether the “actual use of the authorization number” is an act of an authorized purchaser or an act of an unauthorized person, and the fraudulent act cannot be specified. Therefore, it becomes impossible to specify the amount of damage and claim damages based on the specification.

  For this reason, after the permission number is printed on the telephone card, the permission number is temporarily covered with a concealable layer that can be scraped (scratched) in order to prevent the permission number from being easily stolen by a third party. This is a system in which a telephone card purchaser (authorized purchaser) scratches and removes the concealment layer, reads the concealment number concealed beneath it, and uses the concession number. Adoption of “off method” is indispensable.

  For example, as an access method for international calls, a contract is made with a telephone company (referred to as a relay company) that serves as a relay base, and by paying a predetermined amount (for example, 1,000 yen), the number unique to the contractor is described. When you make an international call, enter the access number displayed on the card (toll-free. This is secret information) to access the relay company, and then give it to the individual subscriber A system that allows you to make a call by entering the other party's phone number after entering your personal number, making an international call at a low charge, and sending a commercial for a specified time when you access a relay company As a method that can be used as a device, it is becoming widespread.

  When this system is joined, the personal number given to the individual is processed so that it is completely invisible from the outside by scratch processing (meaning concealment processing that can be scratched). The personal number appears for the first time by peeling.

  Conventionally, in event lotteries, game cards, etc., it is a hidden layer that can be used to scratch the result of lottery such as pictures, characters, numbers, etc. After being concealed, the concealment layer capable of scratching can be seen by rubbing the concealment layer capable of scratching with a nail or a coin so that the contents of the secret information displayed under the concealment layer can be seen. Printed prints are known. These prints are generally provided with a concealable layer that can be scratched at multiple locations, and one concealed layer that appears to be a “hit” is scraped off with coins, etc. The information display is visually confirmed. If two or more concealment layers are scraped off, the rule is often invalid.

In addition, tickets used for services in speed lotteries and fast food restaurants, etc., are printed with numbers and letters (secret information) on the card substrate, and then a concealable layer that can be scratched is printed on it. If the purchaser of the lottery or the person who received the ticket scrapes off the concealment layer using a nail or a coin, the numbers and letters printed on the base are not displayed. Appear. A system in which this number or character that appears is compared with a predetermined number or character, and if it matches, the winning is determined (the secret information is encrypted in a certain sense, it is encrypted information, and other information In other words, it is a mechanism in which “winning” is determined by collation, in other words, deciphering.) In addition, an instant lottery game card or instant lottery with secret individual data such as a lottery code hidden by a concealable layer that can be scratched In merchandise, etc., confidential individual data can be used for complex games, and when the concealment layer is scraped off, a message such as a letter of “around” or a prize number will appear. In addition, the “scratch method” is also used as a “simple lottery”, and it can be used for various lotteries such as lottery tickets and when purchasing products. There are means for providing free gifts, teaching tools, and game cards, but more specifically, at the mobile phone shop, there are 11 scratch frames, and only 5 of them are rubbed and your mobile phone number The number of prizes that can be matched is decided, and on the back side, special discount coupons for new contracts are attached, and used for scratches such as 5 times points for acquiring point card members at major drug stores Things to do, those that can be used as coupons from the day of membership registration, those that provide a coupon usage period, sealed in egg packs to major supermarkets at major egg makers, If you apply the ticket on a postcard and apply to the address listed on the back, you will receive a gift certificate that you can use at the place of purchase, a housing exhibition hall, a fast food shop , Amusement parks, sightseeing spots, sports watching, etc., food industry, fashion industry, beauty industry, medical industry, etc. A winning pattern is scratch-printed, and a lottery layer such as an instant lottery or a scratch lottery is formed by scratching the scratch pattern. When the mark can be put out, it is determined as “winning”, the number of times until the mark is put out, the level of “winning” (for example, product price) determined by the trajectory cut, the pattern is vertical and horizontal There are some which are provided in a grid and determine the level of “hit” depending on where the mark is located in the grid.

Also, for lottery items such as scratch triangle lottery and fortune lottery, character lottery, toy lottery, food lottery such as confectionery, lottery for daily necessities, etc. Shooting prize set, toy fishing and thousand fishing prize set, holed treasure box prize set, gacha gacha and capsule prize set, easy-to-grid prize prize set, all-you-can-fill and ball case play prize set, seasonal lottery set and prize lottery set, For event prize sets such as summer fireworks prize set, summer festival gift lottery set, summer summer goods lottery set, Christmas prize lottery set, New Year prize lottery set, year-end and New Year prize lottery set, etc.
Furthermore, business card size and postcard size used for store events, such as shopping coupons and discount coupons to promote store visits, items that use scratches for direct mail of event guidance, postcards for guidance to stores In addition to scratch printing on crimped postcard DM such as V-fold and Z-fold, etc., scratching dozens of times once a day, depending on the number of times, at gift shops, furniture and clothes stores There are items that you can get for sale, items that are decided at the four corners of the scratch card, and those that are structured so that you can efficiently collect the items you want by referring to this .

With the spread of such “scratch method”, as “secret information”, not only simple “around” or “out of” characters, serial numbers and other numbers, but also barcodes, two-dimensional barcodes, etc. Machine recognition codes, customer data, messages, etc. All words / symbols, or specific marks, etc. are constructed in a fixed or variable form. Furthermore, these “information” uses a coloring mechanism or decoloring mechanism. Proposals have also been made of things that can be read out and those that can read the "secret information" only with a specific light source.
(Prior art) As mentioned above, automatic debits from bank accounts and payments through credit sales companies are very solid methods, but the prior procedures are cumbersome and until the service starts. However, for services that are indispensable to use such as public charges, even if it is an effective fee collection method, it is not always appropriate as a fee collection method for arbitrary services for customers. If the procedure for paying the fee is cumbersome, or if the user waits for several days before the service can actually be used, the customer is forced to use the service.

  For this reason, the fee collection method using a prepaid card is a very convenient method and is very effective depending on the service, i.e., in the same form as when purchasing ordinary goods, However, the so-called “prepaid card method” has been expanded since the prepaid card can be used from the time of purchasing the prepaid card, but on the other hand, the problem of forgery or alteration of the prepaid card In other words, since a general prepaid card uses a method of recording the remaining compensation magnetically, illegal use by the method of tampering with the magnetic recording has become widespread. Recognizing that the "prepaid card method" using records is a minor problem in terms of safety I wanted.

  For this reason, the card itself does not keep a record of the amount of money, only the “authentication number etc.” is kept as “secret information”, and the person who purchased the card gives the “number etc.” A new “prepaid card service” in which various services can be received by “declaring” has become widespread. Since this “number etc.” is concealed as “secret information” by a concealment layer that can be scratched, it is also called a number-type prepaid card compared to a conventional magnetic prepaid card.

  This number-type prepaid card includes communication systems such as public telephone cards, mobile phone cards, international telephone cards, payment systems such as game software, music software, and other paid software payment cards, shopping cards, gift cards, An article purchasing system such as a coin card has been put into practical use.

  The scratch card of the present invention is such a “card base material” such as a card provided with “secret information” with added value, that is, a “card base material” constituting the card or the like. For those with “secret information” on it, a scratch concealment layer is provided so as to cover the “secret information”, and the “secret information” is concealed from a third party. Only a person who has a legitimate right to receive the disclosure of “secret information” can confirm the “secret information” only after scratching the scratch concealment layer of the scratch card.

  As a technique for achieving this object, Patent Document 1 discloses that a person who purchases a card does not keep a record of the amount of money in the card itself but keeps only “authentication number etc.” as confidential information. A variety of services can be received by "declaring" the "number" etc. As a prepaid card service, a concealment layer etc. that can be scratched to conceal this "number etc." as confidential information A technique for concealing is disclosed.

  Also, scratches that are destroyed by printing information that you want to keep secret temporarily on a sheet with a printer, etc., and scratching on the upper layer of those secret information display parts, such as instant lottery tickets, secret information transmission cards, quiz cards, etc. “Scratch cards” formed by forming a possible concealing layer are already widely used, but since these concealable concealing layers can be formed from materials that are relatively easily available, It is easy to carry out alteration.

For example, at the pre-sales stage, a sales representative scratches and peels off the scratchable concealment layer of an instant lottery ticket such as a lottery ticket, and checks the lottery number and the winning lottery ticket in advance by looking at the lottery number. By re-creating a concealable concealment layer on the lottery number display area again, the camouflage can be seen so that it is restored to its original state and the fraud is not noticed. However, since it is also physically possible to engage in fraudulent activities such as making a specific customer make money by selling a winning lottery ticket to an acquaintance, as a countermeasure against this, A method has been proposed in which a capsule is inserted to determine authenticity. However, with this method, when a legitimate user scratches, it can be expected to have a promotional effect that appeals to the sense of smell such as the smell of roses, but after an unauthorized person scratches once, it can be scratched again containing the same fragrance. Even if a concealing layer is provided, it has been difficult for a legitimate user who has subsequently obtained to leave an improper trace that can be easily read visually. (For example, see Patent Document 2.)
As described above, as a method for directly preventing the camouflage action, a hologram layer on which a hologram image is formed is provided on the concealable concealing layer or across the concealable concealing layer and the card substrate, A technique has also been developed in which a person trying to cheat recognizes the existence of a hologram image and prevents cheating with the difficulty of forming a “hologram layer”. (For example, refer to Patent Document 3 or 4.)
However, since these technologies have disclosed the existence of the hologram layer and the hologram design to a third party in advance, the technology having an optical effect similar to that of the hologram reproduction image is forged over a sufficient amount of time. Originally, this configuration itself is designed to scrape the hologram layer and the scratchable concealing layer at the same time. While bringing in a modified product that does not have any layers, it has the disadvantage that it cannot prevent fraud such as acting as if it were a genuine product.

JP-A-10-214320 JP 2001-47777 A JP-A-11-34565 JP 2005-305844 A

  The present invention provides a hologram layer behind the scratch concealment layer so that the existence of the hologram and the hologram design can be concealed from a third party. High anti-counterfeiting property that can be confirmed, high design property that the concealed secret information and its clear hologram design can be visually recognized after scratching, and further, whether or not the hologram exists is determined visually. A scratch card that also has the simplicity of authenticity determination is provided.

  The scratch card of the present invention covers the “secret information” provided on the card substrate such as the above-described, so-called “scratch card”, so that the hologram layer and the scratch concealment layer are formed on them. By providing and embedding on the card base material, it is possible to obtain a “scratch card etc. in which secret information is concealed”.

  In the scratch card of the present invention, since the hologram design is not disclosed to a third party, an unauthorized person can obtain, for example, a plurality of scratch cards of the present invention and know the structure and existence of the hologram. However, know whether the hologram design is the only unified design, multiple designs arbitrarily arranged, or a specific hologram design corresponding to specific confidential information According to this principle, it is possible to provide a scratch card that makes it virtually impossible to make a “counterfeit product” for a scratch card having confidential information other than the obtained scratch card.

  Furthermore, assuming that the hologram layer has a high scratch resistance, as a configuration in which a scratch concealment layer is provided along the unevenness of the hologram relief surface, it is possible to suppress deterioration of the sharpness of the hologram reproduction image due to scratch, and Increase the refractive index of the hologram layer and adhesive layer to make the reproduced hologram image clearer, or arrange pigments with different average particle diameters in the scratch concealment layer to bend the sheet for illegal purposes. In addition, it is possible to leave a structure that can leave the peeling marks, and in addition, a scratch concealment layer can be formed to conceal the hologram layer, further concealing the presence of the hologram and making it possible to remarkably enhance its anti-counterfeiting property. Provided scratch cards.

To achieve the above objective,
The first aspect of the scratch card of the present invention is:
A scratch card for concealing secret information provided on a card substrate, wherein a relief hologram forming layer and a scratch concealment layer are provided in this order so as to cover the secret information, and the relief hologram forming layer and The scratch masking layer is embedded in the card base material, and the outermost surface of the scratch masking layer is flush with the surface of the card base material or at a position recessed from the surface of the card base material. By removing the concealing layer by scratching, the secret information and the relief hologram reproduced image reproduced from the relief hologram forming layer can be visually recognized.

According to the scratch card of the first aspect,
A scratch card for concealing secret information provided on a card substrate, wherein a relief hologram forming layer and a scratch concealment layer are provided in this order so as to cover the secret information, and the relief hologram forming layer and The scratch masking layer is embedded in the card base material, and the outermost surface of the scratch masking layer is flush with the surface of the card base material or at a position recessed from the surface of the card base material. By removing the concealing layer by scratching, it is possible to provide a scratch card characterized in that the secret information and the relief hologram reproduced image reproduced from the relief hologram forming layer can be visually recognized. The presence of the hologram and its hologram design can be concealed, and a scratch concealment layer is provided. High anti-counterfeiting ability that the existence of the hologram can be confirmed only after clutching, high designability that the hidden secret information and its clear hologram design can be visually recognized after scratching, and the existence of the hologram It is possible to provide a scratch card that also has the simplicity of authenticity determination by visually determining whether or not to do so.

The second aspect of the scratch card of the present invention is:
A reflective thin film layer is provided in contact with the hologram relief surface of the relief hologram forming layer so as to follow the hologram relief.

According to the scratch card of the second aspect,
The scratch card according to the first aspect, characterized in that a reflective thin film layer is provided in contact with the hologram relief surface of the relief hologram forming layer so as to follow the hologram relief, can be provided. It is possible to provide a scratch card in which a clear hologram reproduction image can appear and its unexpectedness and design are enhanced.

The third aspect of the scratch card of the present invention is:
A copy-forgery-inhibited pattern printing is performed on the surface of the scratch concealing layer opposite to the surface in contact with the relief hologram forming layer.

According to the scratch card of the third aspect,
To provide a scratch card according to the first aspect or the second aspect, wherein a copy-forgery-inhibited pattern printing is performed on a surface of the scratch concealing layer opposite to a surface in contact with the relief hologram forming layer. Therefore, it is possible to provide a scratch card that prevents the scratch concealment layer from being altered and has improved anti-counterfeiting properties.

The fourth aspect of the scratch card of the present invention is:
The relief hologram forming layer is a high refractive index transparent resin layer, and the refractive index of the relief hologram forming layer is greater than 1.7.

According to the scratch card of the fourth aspect,
To provide a scratch card according to the first to third aspects, wherein the relief hologram forming layer is a high refractive index transparent resin layer, and the refractive index of the relief hologram forming layer is larger than 1.7. Thus, it is possible to provide a scratch card in which a clear hologram reproduction image can appear and its unexpectedness and design are enhanced.

The fifth aspect of the scratch card of the present invention is:
An adhesive layer is provided between the card substrate and the relief hologram forming layer.

According to the scratch card of the fifth aspect,
An adhesive layer is provided between the card substrate and the relief hologram forming layer, so that the scratch card according to the first to fourth aspects can be provided, and more stable scratches are possible. A scratch card can be provided.

  As a card substrate used in the scratch card of the present invention, as long as it can provide a secret information display portion and can embed a scratch concealing layer and a relief hologram forming layer in the card substrate, Any material, that is, a plastic material, a metal material, a ceramic material, a biomaterial, a composite material thereof, or a multi-layer structure thereof can be used.

  Here, “embed the scratch concealment layer and the relief hologram forming layer in the card substrate” means that “the outermost surface of the scratch concealment layer located on the relief hologram formation layer is the surface of the card substrate. It is flush with the surface of the card substrate or is recessed from the surface of the card substrate.

  As an example, “a two-layer laminate of a relief hologram forming layer having a thickness of 10 μm and a scratch concealing layer having a thickness of 10 μm” has a total thickness of 20 μm, a width of 10 mm, and a length of 30 mm (meaning “small piece”). A very thin rectangular parallelepiped having a width of 10 mm, a length of 30 mm and a height of 20 μm.) Is placed in the center of the surface of a card substrate made of a soft vinyl chloride sheet having a thickness of 760 μm in the size of a credit card. 1.0 MPa (megapascals. N / square) in a flat plate pressure state in which the material is heated between room temperature → 150 ° C. and room temperature (1 cycle 30 minutes to 90 minutes) and sandwiched between surface mirror-finished stainless steel plates. The total thickness of the strip is embedded in the 760 μm soft vinyl chloride sheet, with continued application of millimeters).

  At this time, the surface of the card base is measured using a stylus type surface roughness meter, and the boundary area of the embedded portion is measured, and the state where the step at the boundary is 1.0 μm or less is “flat”. It is in a state.

Further, the above strips, further the 10μm thick 3-layer laminate with a polyethylene terephthalate, in the same manner as described above, after I embed in the card substrate, by peeling the polyethylene terephthalate, The outermost surface of the scratch concealment layer can be made “dented” by a depth of 10 μm from the surface of the card substrate. That is, using the above-mentioned stylus type surface roughness meter, the step of the recessed portion is measured, and the state where the step is 10 μm is the state “10 μm recessed from the card substrate surface”.

  This “dent” is desirably 1.0 μm to 30 μm in a credit card-shaped card substrate. If the dent is less than 1.0 μm, the effect of the dent will be lost, and if it exceeds 30 μm, the catching of the step will hinder the handling of the scratch card.

  This dent is 1/10 or less, preferably 1/20 or less of the card substrate thickness. In addition, when the size of the strip is smaller than the size of the dent, a “gap” is formed between the dent and the strip. This “gap width” takes into account the anti-counterfeiting property and a toe or a metal spatula. The size is difficult to insert, that is, 5.0 mm width or less, preferably 1.0 mm or less.

  Further, in order to “embed the scratch concealing layer and the relief hologram forming layer in the card substrate”, a recess having a depth of 25 μm, a width of 11 mm, and a length of 31 mm is provided in advance on the surface of the card substrate (plastic or the like). In that case, a “dent” may be provided during the molding process, or the card base surface may be cut by cutting or the like to provide a recess.) The above-described strip is put in the recess. Fixing is also preferable because of its production stability. In this case, since there is no need for high-temperature heating or high-pressure pressing as described above, there is an advantage that deformation and distortion of the scratch concealing layer and the relief hologram forming layer hardly occur.

  However, from the viewpoint of preventing forgery and alteration, a method of embedding in a card substrate by heating and pressing is desirable.

  Also, the shape of the card substrate can be any shape, that is, a sheet shape, a film shape, a plate shape, a cube shape, a rectangular parallelepiped shape, a card shape, a postcard shape, a slip shape, an envelope shape, a disk shape, an ellipsoid shape, a sphere shape. , Rods, and combinations thereof, or those obtained by subjecting them to processing such as deformation, cutting, drilling, and adhesion can be employed.

  The thickness is not particularly limited as long as it can support the secret information display unit and can be handled, and is usually 3.0 μm to 3.0 mm. Of course, if it is an envelope shape or a box shape, the dimension of the three-dimensional shape is suitable for each application, and it is not necessary to be within this range.

  However, the secret information provided on these card base materials is concealed by the scratch concealment layer, but the strength is high with respect to the card base material from the side opposite to the side provided with the scratch concealment layer. Irradiation with visible rays, infrared rays, ultraviolet rays, X-rays, etc., and particle beams such as electron beams (collectively referred to as “light rays”), the “transmission“ light rays ”” and “reflection” In order to counter the attempt to read the secret information from the light rays ", and characteristic X-rays, etc., as a property of the card substrate, these" light rays "are" shielded "," reflected ", Alternatively, it is desirable to have the property of “scattering”.

  As typical examples of these card base materials, card base materials and shapes used as so-called “prepaid cards”, card base materials and shapes used as “plastic cards”, particularly, JIS standards and ISO standards. There is something that is stipulated. In other words, from the “embedding suitability” and “general versatility” (including processing versatility), “card base material and shape used as“ plastic card ”defined in JIS standard and ISO standard” is desirable. .

  These are already widely distributed and popular all over the world, so there is no resistance to handling and holding them, and peripheral devices when carrying or using them, Since related goods and the like are already popular, application to these items is also smooth and suitable.

  The “secret information” concealed by the scratch card of the present invention includes a personal identification number, personal authentication number, account number, other individual-specific number or symbol, lottery number or symbol, management number or symbol, or simply continuous Numbers and symbols that are effective when registered, the same number as a common key number that is an encryption key number, or a completely random number that is used as a scratch card base material. A person who is allowed to know such as a number that is generated when making it so that no one including the creator knows the contents of the number (meaning a regular purchaser etc. Of course, the system designer of the scratch card, , A scratch card issuer, etc.). Numbers or symbols that can only be seen by others and cannot be physically seen by others There is.

  Further, depending on the use of the scratch card, not only numbers or symbols but also characters, figures, marks, and others that can be commonly recognized by the individual and the supplier of the scratch card (this object is all so-called “information”). ) Can be used. The recognition method also has a recognizable method other than visual, for example, an optical reading method, a magnetic reading method, or any other physical or chemical reading method while having at least information that can be recognized by visual confirmation. In order to increase the anti-counterfeiting, it is also possible to include an optical reading method using the hologram reproduction principle in the relief hologram reproduction image that can be viewed with overlapping the secret information.

  As a method of providing this "secret information" on the card substrate of the scratch card, as a method for forming variable information, a thermal melt transfer method, a sublimation transfer method, an optical or physical direct drawing method, an electrophotographic method, and Examples of the method for forming fixed information include an ink jet method, a gravure printing method, an offset printing method, a letterpress printing method, an intaglio printing method, and a screen printing method.

  Alternatively, a method may be used in which the card base itself is made of a coloring material or a decoloring material, and variable information or fixed information is recorded using the coloring principle or decoloring principle.

  That is, an electron-donating leuco dye and an electron-accepting developer are formed on a card substrate made of a thermosensitive coloring material containing an electron-donating leuco dye and an electron-accepting developer, or on a paper material or film material that becomes a base paper. A card substrate in which a heat-sensitive color-developing layer containing a colorant is provided, and also in which a pressure-sensitive color-developing layer composed of a colorant and a developer contained in a capsule are provided on the base paper, are used. be able to.

  In addition, it is also possible to provide a thermal rewritable layer using a temperature sensitive material that can be operated repeatedly by coloring and decoloring, and a photo-rewritable layer using a photochromic material such as a fulgide type or spiropyran type. Increased properties are preferable.

  In particular, when these “rewritable layers” are provided and “secret information” is displayed, “secret information” appears only when the authorized purchaser confirms the “secret information”, and “hidden” otherwise. ”Can prevent the viewing of“ secret information ”by an unnecessary third party.

  As the thermosensitive coloring material, a system comprising a color former, a developer, and a sensitizer can be used. As the color developer, a phthalide compound such as benzoylleucomethylene blue, crystal violet lactone, etc., as a developer. 4-benzyl biphenyl, fluorene, etc. are used as sensitizers, and acids such as 4-4 ′ biphenol and 1-naphthol.

  Thermal recording is a mechanism in which a color former and a developer dispersed in a layer on a base paper are melted by heat and brought into contact with each other to cause color development. A sensitizer with a low melting point is added to increase the sensitivity. By combining various acid generation methods and this color development mechanism, rewritable thermal recording capable of repeated writing and erasing can be realized. . For example, by stacking a red thermosensitive recording layer that develops color with low thermal energy and a black thermosensitive recording layer that develops color with high thermal energy, it is possible to record in two colors of red / black by using different applied energy. A two-color color thermosensitive recording material may be used.

  These leuco-based thermochromic materials and photochromic photochromic materials change their color development mechanism from “ultraviolet region or infrared region to visible region” and “change from visible region to ultraviolet region or infrared region”. The material can be used as an erasable recording material by selecting the material.

  When such a decoloring mechanism is used, after the authorized purchaser confirms the “secret information”, it is possible to erase the “secret information” promptly or at an appropriate timing according to the decision of the authorized purchaser ( It is possible to improve the anti-counterfeiting property.

In addition, there is no particular restriction on the position or arrangement of the “secret information” on the card substrate.
When using a thin and tough material, such as a prepaid card, the card base can be easily bent, so avoid providing it at the center of the card base, its right end, or It is desirable to provide at the left end, further at the upper end or at the lower end. (This means that the deformation is not applied to the scratch concealment layer when it is bent.) Or, it is distributed in two or more places in a relatively unbent part when bent. May be.

  Also, the so-called “prohibited area” in the magnetic card specifications and IC card specifications (areas that prohibit printing, embossing, etc., such as magnetic area and IC area). It is an area that is prohibited from being provided.) Further, various processing processes applied to the card, such as embossing process, magnetic recording process, contact type IC chip processing process, non-contact type In the processing of IC chips and antennas, the sign panel processing, and the hologram processing, they are provided at positions where no problems occur.

  In addition to providing “secret information” at one position (meaning that something that can be read as one piece of information is solidified in one place), a plurality of positions are distributed on the card substrate. It is also preferable that it is provided on the front or back of the card base material because of its improved secrecy. Of course, in that case, it goes without saying that each scratch concealment layer is provided at each position.

  The “secret information” is formed on the card substrate of the scratch card by the method or method described above, and the relief hologram forming layer and the scratch concealing layer, or the adhesive layer, the relief hologram forming layer, and the scratch are formed. After concealing the concealing layer in this order, and further by embedding the reflective thin film layer and the tint block print in an appropriate position so as to cover the "secret information", the scratch concealing layer is removed by scratching. By creating a scratch card that makes it possible to visually recognize the “secret information” and the relief hologram reproduction image reproduced from the relief hologram forming layer, the “secret information” can be visually read by a third party or an unauthorized person The legitimate user scratches the scratch concealment layer, and the "secret information" It is possible to configure a scratch card that can be read.

  Here, on the other hand, the hologram means that a “three-dimensional object” to be reproduced as a hologram reproduction image is irradiated (illuminated) with a laser beam that is temporally and spatially coherent. Reflected and scattered (diffracted) “light” (which is called “object light”) on the surface of the “three-dimensional object” is incident on the photosensitive material at a predetermined angle, and on the other hand, the laser light itself ( This is called “reference light.”) Is incident on the photosensitive material at an angle different from the incident angle of the “object light” and interferes with the “object light” and the “reference light”. The “interference fringes” generated by the interference are recorded on the photosensitive material.

  This hologram forming method is one of the hologram forming methods by the photographing method, and is also called “two-beam bundle interferometry”.

  Since the “object light” and the “reference light” are coherent with each other, a clear interference fringe is generated in the photosensitive material, and the interference fringe is recorded.

  First, as a simple case, considering the case where the reference light and the object light are at an angle and both are parallel light, the difference in the length of the path (light path) to the photosensitive material surface of the two lights, Therefore, due to the difference in phase of the two light beams, they strengthen each other at one position on the surface of the photosensitive material and weaken at another position. As a result, the photosensitive material has an equal interval determined by the angle between the reference light and the object light. Interference fringes extending in the direction perpendicular to the surface of the photosensitive material are recorded.

  The contrast of the interference fringes is greatest when the amplitudes of the reference light and the object light are equal, and decreases as there is a difference. Since the object light is light that changes depending on the three-dimensional shape of the “three-dimensional object” and is not parallel light, the interference fringes are disturbed.

  However, the disturbance is caused by a change in the phase of the object light with respect to the reference light as a lateral shift of the interference fringe, and a change in the amplitude as a change in contrast. The photosensitive material records all the information on the phase and amplitude of the object light. Is done. A hologram obtained by developing the photosensitive material thus exposed becomes a hologram.

  In this hologram, the image of the object does not appear like a photograph taken with an ordinary camera, but it appears to be uniformly clouded (recorded as a refractive index distribution), Object information is completely recorded with fineness close to the wavelength of light.

  As this photosensitive material, a photoresist is used, and the photoresist surface is provided with irregularities of a desired depth by managing the development time of the photoresist. This is a relief hologram, and the irregularities are the same as described above. The depth and period are disturbed, and the disturbance includes information on the phase and amplitude of the object light.

  The uneven surface is a hologram relief surface, and the “photosensitive material layer having an uneven surface” at this time corresponds to the “relief hologram forming layer”.

  When a hologram in which interference fringes are recorded is illuminated with, for example, the same laser light as the reference light described above, the interference fringes recorded in the photosensitive material act as a diffraction grating that changes the traveling direction of the light.

  When light is incident on the diffraction grating, in addition to the directly transmitted light (zero-order diffracted light) that is transmitted as it is, plus the first order and minus the first order in the direction determined by the spacing of the grating, in this case, the spacing of the interference fringes. Produces diffracted light.

  When parallel light having a predetermined angle is used as object light and reference light at the time of hologram creation, the positive and negative first-order diffracted light when the hologram is illuminated are both parallel light. Advances in the direction in which the original object light passes through the photosensitive material.

  Since the actual interference fringes are disturbed by the phase and amplitude of the object light, the plus first-order diffracted light is disturbed so as to correspond to it, and the original object light is reproduced as it is. When observed through the hologram, the object image is three-dimensionally reproduced at the original position without being disturbed by the zero-order or minus first-order diffracted light. This image is called a direct image, and it becomes a virtual image because it looks like divergent light as if light came from an object. In addition, the minus first-order diffracted light reproduces an image that is reversed from the original object on the right side of the hologram. This is called a conjugate image and becomes a real image because the light is actually focused.

  When the direct image is observed by changing the viewing position, it can be confirmed that the relative positions of the three-dimensional object before and after are changed and reproduced three-dimensionally.

  This situation is the same also in the relief hologram, and when the hologram relief surface of the relief hologram forming layer described above is illuminated with a predetermined “reference light”, a direct image (hologram reproduction image) appears at a predetermined angle.

  When the reflective thin film layer is provided so as to follow the hologram relief surface, the outermost surface of the reflective thin film layer (a relief uneven surface) or a relief hologram is provided. The interface between the forming layer and the reflective thin film layer is the “hologram relief surface itself”, and these surfaces are positioned as “reflection surfaces”, and the “reflected light” on the “hologram relief surface” The direct image appears in a reflection direction determined by a predetermined angle. The real image which is the conjugate image is the same.

  These “hologram relief surfaces” have a depth of about 0.01 μm, and pitches (meaning the period of irregularities) are arranged so that irregularities with a pitch of around 1.0 μm are spread in a predetermined area without any gaps. Each of these uneven shapes generates “individual reflected diffracted light” every 1.0 μm, and the “individual reflected diffracted light” causes an optical interference phenomenon with each other. Finally, it is visually recognized as one combined relief hologram reproduction image.

  Therefore, for example, when one of the 1.0 μm irregular shapes is regarded as a smooth small three-dimensional curved surface (the sectional shape of the hologram relief irregularities often repeats monotonic increase and decrease like a trigonometric curve. An example of this is a curved line.) On the three-dimensional curved surface, a fine dent or protrusion of the order of 0.001 μm is generated, or the curved surface itself is a curved surface deformed in the order of 0.001 μm. Mean deformation (meaning that the depth of the recess becomes 0.001 μm deeper or shallower, or its diameter increases by about 0.1 μm. Such changes are considered to be extremely fine. Although it tends to be, it is still a big change of “10% change”.) That is, “Slight deformation of hologram relief surface shape” occurs. As a result, the sharpness of the relief hologram reproduced image is greatly affected, and the sharpness is lowered.

  In particular, when such deformation is unevenly distributed in the hologram recording area, it also causes deformation of the relief hologram reproduced image itself.

  The scratch card of the present invention is provided with “secret information” on the card base of the scratch card, and a relief hologram forming layer, a scratch concealing layer, an adhesive layer, a relief hologram so as to cover the “secret information”. A formation layer, a scratch concealment layer, or a structure in which a copy-forgery-inhibited pattern printing is further provided on the scratch concealment layer, and a reflection thin film layer added to the hologram relief of the relief hologram formation layer. “Relief hologram forming layer and scratch concealing layer”, “Adhesion layer, relief hologram forming layer, scratch concealing layer, or a surface pattern printed on the scratch concealing layer” or “hologram relief of the relief hologram forming layer” Laminates such as those with a reflective thin film layer embedded in the card substrate It is intended.

As the transparent resin layer for constituting the relief hologram forming layer, various thermoplastic resins, thermosetting resins, or ionizing radiation curable resins can be used. (Ionizing radiation means electron beams and ultraviolet rays.)
The relief hologram forming layer uses a solvent that does not dissolve or alter the “secret information” display part, and can be used for printing methods such as offset printing method, gravure printing method, screen printing method, intaglio printing method, inkjet printing method, etc. Using a forming means such as a spin coating method, a curtain coating method, or a photoresist processing method, the thickness after drying is 1.0 μm to 50 μm, and further, a thickness of 3.0 μm to 20 μm.

  If this thickness is less than 1.0 μm, it becomes difficult to form a relief hologram. If the thickness exceeds 50 μm, the scratch concealment portion on the card base of the scratch card (the relief for concealing “secret information”) The total thickness of the hologram forming layer, the scratch concealing layer, etc.) is too large, which hinders embedding in the card substrate.

  Then, a master plate in which diffraction gratings and interference fringes prepared in advance are recorded in a concavo-convex shape on the exposed surface of the relief hologram forming layer (meaning the surface in contact with the scratch concealment layer of the relief hologram forming layer). The original plate having a predetermined hologram relief surface is pressed as a replication-type press die (also referred to as a stamper), and both are heated and pressure-bonded by appropriate means such as a heating roll. The uneven pattern can be replicated on the relief hologram forming layer. At this time, the relief hologram pattern to be formed may be a single pattern or an aggregate of a plurality of patterns.

  Or, after filling the ionized radiation curable resin between the uneven surface of the original plate and the “card substrate provided with“ secret information ”, and curing the resin with ionizing radiation, By peeling the original, a relief hologram forming layer having a more precise hologram relief surface can be formed at a predetermined position on the card substrate.

  This hologram relief surface is exposed by scratch-off of the scratch concealment layer, becomes an interface with air (refractive index n = 1.0), and a relief hologram reproduction image of the relief hologram forming layer is formed by reflected light from this interface. It is something that appears.

  In order to make the intensity of the reflected light sufficient, it is desirable that the difference in refractive index at this interface is larger. Therefore, the relief hologram forming layer is a “high refractive index transparent resin layer”.

  Here, the “high refractive index transparent resin layer” refers to a “transparent resin layer having a high refractive index” and a transparent resin layer having a refractive index n exceeding 1.7. In particular, the hologram relief surface is on the lower side of the relief hologram forming layer, that is, the surface opposite to the surface in contact with the scratch concealment layer (meaning the interface between the relief hologram forming layer and the adhesive layer). In addition, this transparency directly affects the sharpness of the relief hologram reproduced image.

  The relief hologram forming layer is composed of a “high refractive index transparent resin layer”, that is, a transparent resin layer showing a high refractive index of 1.7 to 2.3 while ensuring “transparency”. Therefore, the refractive index difference at this interface can be set to 0.7 to 1.3, particularly 1.0 to 1.3, and the intensity of the reflected light described above is very large, so that a clearer relief is obtained. A hologram reproduction image can be made to appear.

  Research on “higher refraction while maintaining the optical transparency of the resin material” has been conducted earnestly, but it does not adversely affect the observation of the hologram reproduction image (“optically transparent”). ), Through the relief hologram forming layer, maintaining “transparency” that allows the “secret information” under the relief hologram to be sufficiently and reliably visible, while maintaining the “refractive index as a“ resin layer ””. There is a limit to increasing it, and in the polymer structure of a resin with a relatively high refractive index, a “sulfur atom” with a high atomic refractive index, a “halogen component” such as a chlorine atom or a fluorine atom, Resin materials using a method of introducing an “aromatic ring group” having a high refractive index structure at the molecular level, or ultrafine particles of high refractive index metal oxide such as TiOx and ZrOx (average particle size: 0.0003 μm to 0.03 μm) To highly disperse, and more Found a material having a refractive index n = 1.9 by a method of incorporating a predetermined metal salt into the molecular structure of the polymer material, but it is still an example of metal compound fine particles (or thin films). A “transparent” resin exceeding the refractive index n = 2.3 of ZnS has not yet been found.

  However, when the hologram relief surface is on the upper side of the relief hologram forming layer, i.e., at the interface between the scratch concealing layer and the relief hologram forming layer, only the reflected light at this interface contributes to the clarity of the relief hologram reproduction image. Therefore, the relief hologram forming layer itself is not required to have optical transparency.

  However, even behind the reflecting surface, if it is colored or becomes white and has a strong light scattering property, not only the visibility of "secret information" but also the clarity of the relief hologram reproduction image Can be adversely affected, so it is possible to sacrifice the transparency relatively within the range considering the visibility of the “secret information” and the clarity of the relief hologram reproduction image. A transparent resin material having a high refractive index and a pigment having a high refractive index (a pigment having a refractive index of 2.0 or more, further 3.0 or more. If the refractive index exceeds 3.0, light scattering properties And light shielding properties are manifested), by mixing about 30 to 70%, it is possible to make a “layer having a high refractive index” although the transparency is slightly lowered.

  Then, a scratch concealment layer is provided on the relief hologram forming layer.

  The hologram relief surface of the relief hologram forming layer does not affect the hologram reproduction image due to the redundancy of the hologram, even if the concave or convex portion is locally filled or scraped, but is relatively wide. If a “slight shape change” over a range or a “slight surface alteration” over a relatively wide range occurs, the sharpness of the hologram reproduction image may be reduced or the hologram reproduction image may be distorted. .

  Therefore, as the ink composition for the scratch concealing layer, an ink composition that does not partially dissolve or swell the relief hologram forming layer or cause the above deformation or alteration is used.

  For example, in order to obtain a concealing property and scratch property, a resin selected from rubber-based natural resins, diene-based resins, acrylic resins, and vinyl-based resins. A pigment component such as 20% to 80% of the total solid content is used. Moreover, in order to improve the concealment property of a scratch concealment layer, you may contain 1-10% of pigment components with strong concealment property, such as barium sulfate and calcium carbonate. By configuring the scratch concealing layer ink composition from the above composition, both printability and scratch properties can be satisfied.

  The scratch concealing layer is obtained by diluting the ink composition with a solvent that does not partially dissolve or swell the relief hologram forming layer, or cause deformation or alteration as described above (hereinafter, including this). , "The ink composition for the scratch concealment layer") using a printing method such as an offset printing method, a gravure printing method, a screen printing method, an intaglio printing method, an ink jet printing method, It is formed on the relief hologram forming layer with a thickness of 5 μm to 50 μm, and further 10 μm to 30 μm.

  When the hologram relief surface is on the lower surface of the relief hologram forming layer, this ink composition is formed on the “flat surface” of the relief hologram forming layer. Since this “surface” is a “surface” through which light illuminating the hologram relief surface passes and reflected light from the hologram relief surface (that is, a relief hologram reproduction image) passes, It is necessary to consider the same as the “surface”.

    If the thickness of the scratch concealment layer is less than 5 μm, the “secret information” may be seen through, and if the thickness exceeds 50 μm, the total thickness of the scratch concealment portion on the card base of the scratch card is still large. It becomes too much, and the embedding to the card substrate is hindered. Furthermore, if the thickness is 10 μm or more, the concealing property of “secret information” is sufficient, and if it is 30 μm or less, the forming workability is excellent, and there is no protrusion amount when 1000 scratch cards are stacked, Suitable for self-conveying processing. Moreover, if the thickness of the scratch concealment layer is within this range, it can be easily pulverized with coins, fingers or nails.

  However, the interface between the scratch concealment layer and the relief hologram forming layer is the “hologram relief” surface itself, and the reflected light from this surface causes a relief hologram reproduction image to appear. It is necessary to say.

  When the interface between the scratch concealing layer and the relief hologram forming layer is not an “optical mirror surface” but a so-called “rough surface”, this “rough interface” is referred to as “secret information”. And when the illumination light for visually recognizing the relief hologram reproduction image is illuminated, the “light phase” is disturbed and further becomes “scattered light”. In the relief hologram reproduction image, the reproduction of the hologram generated by the interference of light with the same phase is inhibited, and the relief hologram reproduction image is confirmed. It will not even be possible.

  Such “optical mirror surface” means that the smoothness of the surface of a certain “layer” is substantially 0.01 μm to 0.1 μm in terms of average surface roughness Ra. In a three-dimensional curved surface such as a hologram relief surface, “optically mirrored” means that the curved surface is a “smooth surface” that does not have irregular irregularities that deviate from the desired curved surface. In other words, the value of the average surface roughness Ra in the microscopic area of the three-dimensional curved surface that can be approximated to a plane is approximately microscopic. Also in the region, it can be defined as “0.01 μm to 0.1 μm”.

Normally, when the scratch concealing layer is formed on the relief hologram forming layer by using the printing method as described above, the outermost surface has a “roughness” of about 1.0 μm to 30.0 μm, or more in some cases. The “roughness” makes it easy to pulverize with coins, fingers or nails, and is desirable in terms of scratch-off suitability. (Scratch-off means that the scratch concealment layer is partially removed by scratching with coins or claws.)
However, the outermost surface of the scratch concealment layer (the surface opposite to the surface in contact with the relief hologram forming layer) is exactly the surface that scratches and preferably has such roughness, but the opposite surface, That is, the surface of the scratch concealing layer in contact with the relief hologram forming layer needs to be an “optical mirror surface” as described above for the purpose of the present invention.

For this reason, after forming a scratch concealment layer on an appropriate peelable film, it has a smooth surface equal to or higher than the above-mentioned “optical mirror surface”, using a “metal plate subjected to a surface smoothing treatment” or the like, Using a flat plate press treatment that heats at 100 to 200 ° C. and pressurizes at 10 ⁷ to 10 ⁹ Pa, or “a metal roll that has been subjected to a surface smoothing treatment”, etc. The surface of the scratch concealing layer that is in contact with the relief hologram forming layer is made an “optical mirror surface” by a roll press process that applies a linear pressure of 0 kg or more, and this surface is formed with a “recess on the card base of the scratch card. And press the "secret information" and the hologram relief surface of the laminate provided with a relief hologram forming layer (hologram relief is formed on the exposed surface) so as to cover it. The program relief surface as "type", to its "optical mirror surface" of the scratch masking layer, while maintaining its specularity, it is possible to form a hologram relief. (In other words, the interface between the scratch concealing layer and the relief hologram forming layer has a hologram relief shape.) At this time, if the flat plate pressing process is performed with the peelable film attached, the scratch is only the thickness of the peelable film. The outermost surface of the concealing layer is in a state of being recessed from the surface of the card substrate.

  Or, on the card base material of the scratch card, “secret information” and an adhesive layer and a relief hologram forming layer provided so as to cover it (a hologram relief is formed at the interface between the adhesive layer and the relief hologram forming layer). Can be laminated on the “optical mirror surface” of the scratch concealing layer while maintaining its mirror surface property.

  Moreover, the “hologram relief surface” or “flat surface” of the relief hologram forming layer is formed when the scratch concealment portion of the scratch card of the present invention is pressed against the scratch concealment portion and only the scratch concealment layer is scratched off. In addition, it is necessary to maintain the above-mentioned “optical mirror surface” as much as possible even after such scratch-off, which is the surface directly hit by the coins and claws.

  For this reason, the physical characteristics of the “hologram relief surface” or “flat surface” of the relief hologram forming layer can be set as an “optical mirror surface” in such a scratch concealment layer forming step or scratch-off step. It needs to be improved to a “maintainable level”.

  For example, when a two-component curable resin or a thermosetting resin is used for the ink composition of the relief hologram forming layer, when forming a hologram relief, or when forming a “flat surface”, When the roll plate itself is heated to accelerate and complete the degree of cure near the hologram relief surface or “flat surface”, or when an ionizing radiation resin is used for the ink composition of the relief hologram forming layer After replication on the original plate or after formation of the relief hologram forming layer, ionizing radiation is further irradiated (post-cure), and the degree of crosslinking of the entire relief hologram forming layer is set to 98% or more.

  Further, the original plate, flat plate, or roll plate is produced using an ionizing radiation transmitting material (for example, resin original plate, flat plate, roll plate, etc.), and the original plate, flat plate, or roll plate is produced. While pressing against the relief hologram forming layer, sufficiently apply ionizing radiation to improve the physical properties of the hologram relief to the above-mentioned level while maintaining the surface shape and “flat surface” shape of the hologram relief with high accuracy. It is also suitable.

  Further, by including 10 to 30% of a releasing agent such as silicon resin, silicon oil, or fluororesin in the relief hologram forming layer, the scratch resistance of the surface of the relief hologram forming layer is improved, and It is possible to improve the scratch-off suitability by making it easy to slip nails, coins, etc., and easily generating a shift of the interface between the scratch concealing layer and the relief hologram forming layer.

  Particularly, when the hologram relief surface of the relief hologram forming layer is on the upper surface of the relief hologram forming layer, the requirement for optical transparency with respect to the relief hologram forming layer is relaxed, resulting in a decrease in optical transparency. It is possible to add more “releasing agent”, for example, 30% to 60%.

  In addition to the printing method described above, it is also suitable for the above purpose to use a roll coating method or a resist processing method.

  Or, after forming the scratch masking layer on the hologram relief surface of the relief hologram forming layer with a predetermined thickness, the ink composition for scratch masking layer used for the scratch masking layer in the “drying and further curing stage” In order to sufficiently move the pigment component and the resin component in the resin, the “drying condition and curing condition” may be set to a treatment time 2 to 10 times the normal treatment time. The hardened interface itself is finished as an “optical mirror surface” (meaning that pigments with a small particle diameter gather near the interface, or the resin component is sufficiently filled in the gap between the pigments). "Hologram relief surface of relief hologram forming layer with pigment having large particle size in scratch concealment layer" generated when scratching off scratch concealment layer, Ku is preferably able to alleviate scratching and deformation pressure to the "flat surface".

  Of course, a scratch concealment layer is temporarily formed on the original plate or “appropriate film having a“ flat surface ”” in advance and in contact with the original plate or “flat surface” of the scratch concealment layer. This surface is called an “optical mirror surface”, and this is temporarily transferred (transferred) onto an appropriate temporary transfer film to expose the hologram relief surface or “flat surface”. As a new “original plate, flat plate, or roll plate”, it is pressed against the relief hologram forming layer and simultaneously transferred from the appropriate temporary transfer film (transfer of the scratch concealment layer). It is also possible to make a laminate of a relief hologram forming layer and a scratch concealment layer in a state where the “hologram relief surface” of the scratch concealment layer or the specularity in the vicinity of the “flat surface” is enhanced. The relief hologram forming layer side of the layer body is pressed against “secret information” on the card substrate, or laminated on the card substrate so as to cover the “secret information” via an adhesive layer. This is preferable as a means capable of reliably obtaining an “optical mirror surface” with high accuracy.

  When the relief hologram forming layer is provided so as to cover “secret information” on the card base of the scratch card, an adhesive layer is provided between the card base (and “secret information”) and the relief hologram forming layer. be able to.

  By providing an adhesive layer, it is possible to increase the adhesive strength between the card substrate and “secret information” and the relief hologram forming layer, and when scratching off or when trying to remove the relief hologram forming layer illegally Unnecessary peeling of the relief hologram forming layer can be prevented, and alteration or alteration of “secret information” can be prevented.

  In addition, a “laminate” composed of a scratch concealing layer and a relief hologram forming layer is prepared in advance, and then the “laminate” is heated and applied to the card substrate and “secret information” via this adhesive layer. It is also possible to adopt a procedure for embedding and fixing at the same time by pressure pressing, and the degree of freedom of the creation procedure can be increased.

  Furthermore, the above-described hologram relief can be provided on the exposed surface of the adhesive layer, and a relief hologram forming layer and a scratch concealing layer can be sequentially laminated on the hologram relief surface.

  The adhesive layer is formed with a thickness of 1.0 μm to 30 μm as a thickness after drying.

  As the ink composition for the adhesive layer, an ink composition that does not partially dissolve, swell, or cause deformation or alteration of the card substrate and “secret information” is used.

  As the ink composition, any of solvent-based and water-based adhesives can be used. For example, vinyl acetate resin, acrylic resin, vinyl acetate-acrylic copolymer, rubber resin such as natural rubber, etc. Can be mentioned. Further, in order to obtain a material configuration that is naturally friendly, it is particularly preferable to use a material made from a natural material such as latex mainly composed of natural rubber.

  When the adhesive layer is less than 1.0 μm, the card base material of the scratch card and the adhesive property with “secret information” (the adhesive property with “secret information” means the “secret information” forming part If it exceeds 30 μm, it will hinder embedding in the card substrate. Of course, if the card base is provided with a recess in advance, if the recess is deepened, these thicknesses can be set thicker, but the deeper the recess provided in a part of the card base, Since the physical strength of the card base material is impaired, it is not preferable as an anti-counterfeit medium.

  However, when the “secret information” is provided on the card substrate by the ink jet method, the height of the “secret information” printing portion (which means the rising of the printing portion) is as high as 5.0 μm to 20 μm. In this case, when a relief hologram forming layer or a scratch concealment layer is provided on the “secret information”, the adhesive layer is appropriately deformed so as to softly wrap the “high” printed portion. By absorbing the “height”, it is possible to prevent the rising pattern of the “secret information” printing portion from being connected to the rising of the relief hologram forming layer or the scratch concealing layer. For this purpose, the thickness of the adhesive layer is set to the height of the “secret information” raised by the ink jet method (meaning the distance from the card substrate surface of the printing unit to the surface of the printing unit). It is preferable to set it to 0 times to 5.0 times, and it is inevitable that the upper limit of the above-described thickness is exceeded.

  If this thickness is less than 2.0 times the raised height, the absorbency becomes insufficient, and if it exceeds 5.0 times, it becomes an unnecessary thickness, and it is embedded in the card substrate. Or the physical strength of the card substrate itself is lowered.

  As a method for forming the adhesive layer, it can be applied and dried by a method such as gravure coating, roll coating, comma coating or screen printing.

  The adhesive strength of the adhesive layer is determined by the 180 ° peeling method according to JIS Z0237 as the adhesive strength with the card base of the scratch card and the “secret information” forming portion, and the peeling strength at the interface with the relief hologram forming layer. In the range of 1.0 to 3.0 kg / 25 mm width. Of course, even higher peel strengths are suitable for the purposes of the present invention. In particular, the adhesive strength between the card substrate and the “secret information” forming portion on the card substrate is determined from the object of the present invention by using the scratch card of the present invention as the “secret information” forming portion on the card substrate and the card substrate. The adhesive layer and the relief should be larger than the peel strength at the interface between the adhesive layer and the card substrate and the “secret information” forming part on the card substrate. The peel strength at the interface with the hologram forming layer is designed to be larger.

  Thus, the scratch card of the present invention comprising the relief hologram forming layer and the scratch concealing layer provided to cover the card base of the scratch card, the “secret information” provided thereon, and the “secret information”. Get.

  Or, the scratch card of the present invention comprising a card base of the scratch card, “secret information” provided thereon, and an adhesive layer, a relief hologram forming layer and a scratch concealment layer provided so as to cover the “secret information”. Get.

  The hologram relief surface of the relief hologram forming layer is formed on the interface between the relief hologram forming layer and the scratch concealing layer, or on the opposite surface.

Of course, the same hologram relief or different hologram reliefs may be provided on both surfaces of the relief hologram forming layer, and the arrangement of the relief holograms is entirely overlapped when observing the relief hologram reproduction image. It is good also as what overlaps partially. Furthermore, they may be arranged so as not to overlap with each other, and the hologram reliefs are formed in a dispersed manner so that the arrangement is complex, not only improving its design but also improving forgery prevention Suitable in terms. (At the time of observing the hologram reproduction image, “dispersed” or “they overlap” means that each “hologram relief forming area” where each hologram reproduction image appears is a sheet of the scratch card of the present invention. as viewed from the observer to observed from vertically upward to the surface, it means either "a gap state between its these regions" or "state in which those areas are overlapped.")
For the purpose described above, when the scratch concealing layer is temporarily provided on the peelable film, the surface of the peelable film has an average surface roughness Ra of 1.0 μm to 30 μm or more. Setting the “rough surface” to the roughness can also make the breakability at the time of scratching uniform and easy, and contributes to the improvement of the appropriate scratch-off.

  Of course, when the scratch concealing layer is provided on the relief hologram forming layer, the above-described “rough surface” may be provided in advance on the printing plate. Furthermore, after the scratch concealing layer is formed, the above “rough surface” may be provided. It is also preferable that the outermost surface of the scratch concealment layer is made a predetermined “rough surface” by heating and pressing using a flat plate or a roll plate having “

  In the configuration in which the interface between the adhesive layer and the relief hologram forming layer is the hologram relief surface of the relief hologram forming layer, the difference between the refractive index of the adhesive layer and the refractive index of the relief hologram forming layer is 0. The intensity of reflected light at the interface between the two layers, that is, the hologram relief surface, is ensured, and the relief hologram reproduction image by the relief hologram forming layer reproduced by the reflected light is made clear. is necessary.

  If the difference in refractive index between the two layers is less than 0.1, the intensity of the reflected light described above becomes small, and the relief hologram reproduced image can hardly be visually recognized by visual observation.

  The adhesive layer in this configuration has a great effect on the reproduction of the relief hologram reconstructed image at the interface between the two layers, but since it is behind the interface, it does not directly affect the reflected light itself. Transparency can be sacrificed (a level of transparency where “secret information” is visible is necessary), and a transparent resin material having a relatively high refractive index is combined with a pigment (pigment having a high refractive index). With a refractive index of 2.0 or more, further 3.0 or more, etc. When the refractive index exceeds 3.0, light scattering and light shielding properties are exhibited. By doing so, although the transparency is slightly lowered, a layer having a high refractive index can be obtained.

  However, even behind this reflecting surface, if it is colored or becomes white and has a strong light scattering property, not only the visibility of "secret information" but also the clarity of the relief hologram reproduction image In the adhesive layer, the same resin as the “high refractive index transparent resin layer” that can be used for the relief hologram forming layer can be used. Depending on the balance with the resin used, the refractive index of the adhesive layer can be made 0.3 or more larger than the refractive index of the relief hologram forming layer, and the reflected light intensity at the interface (reflection surface) is very large. A clearer relief hologram reproduction image can be made to appear.

  In particular, when providing hologram reliefs on both the upper and lower surfaces of the relief hologram forming layer, the upper and lower surfaces of the relief hologram forming layer are the reflection surfaces of the respective hologram reliefs, and after scratching off, on the upper surface of the relief hologram forming layer. , “Difference between air (n = 1.0) and refractive index nH of relief hologram forming layer”, and “refraction index nH of relief hologram forming layer and refraction of adhesive layer on lower surface of relief hologram forming layer” The “difference from the rate nA” is designed to be large.

  For example, by increasing the air n = 1.0, the refractive index nH = 1.5 of the relief hologram forming layer, and the refractive index nA = 2.0 of the adhesive layer from each interface, A clear hologram reproduction image can appear.

  Further, the balance of the size is adjusted, and the combinations of [n, nH, nA] are changed to [n <nH <nA], [n << nH <nA], [n <nH << nA], [n By providing << nH << nA], [n <nH> nA], [n << nH> nA], [n <nH >> nA], [n << nH >> nA], etc. It is possible to adjust the intensity of the relief hologram reproduction image regenerated from the upper or lower interface of the hologram forming layer (meaning the brightness of the image).

  Here, [<] or [>] means that the difference is 0.1 or more, and [<<] or [>>] means that the difference is 0.3 or more. Means 0.5 or more.

  As an example, when the refractive index of “water”, which is close to the refractive index n = 1.33 and the lowest “resin” is used for the relief hologram forming layer, the refractive index of the resin used for the adhesive layer is A refractive index difference of 0.5 can be realized at n = 1.83, and an acrylic resin (refractive index n = 1.47) that is often used as a relief hologram forming layer is made of a resin having a refractive index n = 1.97. It can be realized as a fat layer used for the adhesive layer. However, there is no method for realizing a combination of resins having a refractive index difference exceeding 1.0, except that the transparency of the adhesive layer is sacrificed to some extent.

  Further, by providing a reflective thin film layer in contact with the hologram relief surface of the relief hologram forming layer so as to follow the hologram relief, the reflective thin film layer itself is formed into a hologram relief shape and reflected from the reflective thin film layer. The intensity of the light (this reflected light includes the phase of the hologram relief) is made stronger and larger, so that a clearer relief hologram reproduced image can appear.

  The reflective thin film layer may be either a metallic glossy reflective layer such as a metal thin film formed by a vacuum thin film method or a transparent reflective layer, but if a metallic glossy reflective layer is used, the reflective thin film layer However, when the metal glossy reflective layer is “entirely formed”, the “secret information” behind it is completely shielded. Therefore, in order to make “secret information” visible, it is necessary to make “partial formation” with an area corresponding to “secret information” of the metallic glossy reflective layer as an opening. When a transparent reflective layer is provided, even if “entire formation” is performed, “secret information” behind it can be visually recognized. Of course, in order to obtain a design effect, it is also preferable that the transparent reflection layer be “partially formed”.

  For forming these reflective thin film layers, a physical thin film forming method such as a vacuum thin film method or a chemical thin film forming method such as plating can be used, and the thickness thereof is about 10 to 2000 nm, preferably 20 It can be provided to a thickness of ˜1000 nm.

  Furthermore, the surface of the scratch concealment layer opposite to the surface on which the relief hologram forming layer is formed is printed with a background pattern, which not only improves anti-counterfeiting due to the presence of the “background pattern” but also illegally scratches. In doing so, the “background pattern” is also scraped off at the same time, thereby enhancing the effect of preventing forgery and alteration.

  However, when the background pattern printing is provided on the scratch concealment layer, this “background surface print outermost surface” is not flush with the surface of the card base or the surface of the card base instead of the outermost surface of the scratch concealment layer. It is also suitable for the reason described above to be recessed.

  In addition, the background pattern printing may be uniformly applied to the surface of the scratch concealment layer embedded in the card base material and the surface of the card base material. Further, the design of the background pattern printing is not limited to the scratch concealment layer and the card base material. It is suitable for the anti-counterfeiting property to be set so that the part straddling the boundary is broken when it is intended to peel off the scratch concealment layer. .

  This tint block printing is a light-colored pattern or coloring print that is the background of the main design pattern, and you can use a single color printing ink, but in order to improve anti-counterfeiting, It is also preferable to use the printing ink. For this multi-color tint block printing, offset printing or gravure printing is also used, but special printing methods such as Orlov printing and Simultan printing are also suitable because of their high anti-counterfeiting properties.

  Orlov printing is letterpress multicolor collective printing, in which each color ink transferred to a partial plate (pattern roller) corresponding to each color ink is gathered on an intermediate roller, and then the ink from the collective roller. The inks are simultaneously applied to two letterpress plates. There are two methods: printing directly from the letterpress surface (Orlov printing) and printing after transferring ink to a rubber cylinder (blanket cylinder) (offset zummel). Although there is only one printing plate, the color can be changed to some color from the middle of one drawing line.

  Simultan printing is a method in which a plurality of printing plates (lithographic printing plates, resin printing plates, or relief printing plates such as metal printing plates) are arranged around a single rubber cylinder (bran cylinder), and ink from each printing plate is collected on the rubber cylinder. Then print. The printing position accuracy is almost determined by the mounting accuracy of the plate surface to the plate cylinder, and since there is little influence of expansion and contraction of the card base, high registration can be stably performed.

  The design for this background pattern printing is a figure that is used for decorative effects, such as "patterns" that are repeated regularly, "patterns" that include patterns with a crest, and other "patterns" that are used for dyeing and weaving. Designs repeated as “can be used.

  In particular, for the purpose of easily destroying the design due to scratches, it is also preferable to make the width of the image line very narrow and make it a “thin line” or “fine pattern” of about 30 to 100 μm. It is.

  The formation thickness of the “background pattern” in the background pattern printing is set to 1.0 to 10.0 μm.

  However, since the surface of the scratch concealment layer is a “rough” surface, the tint block printing can be performed using an ink jet method capable of printing following this unevenness, a thermal transfer method that is not easily affected by this unevenness, or a sublimation transfer method You may go. Furthermore, it is also preferable to use such a transfer method to perform printing only on the concave and convex portions of the scratch concealment layer so that the tint block printing can be destroyed very easily due to unauthorized scratches.

  In particular, the sublimation transfer method is preferable because it penetrates only into the resin layer constituting the scratch concealment layer to create a unique texture and it is difficult to counterfeit the same.

  In addition, when this copy-forgery-inhibited pattern printing is provided between the scratch concealing layer and the relief hologram forming layer, and the design and formation position are the same above and below the scratch concealing layer, the scratch concealing layer is scraped. In addition, making the tint block design visible as a continuous design is also preferable in order to enhance its unexpectedness and anti-counterfeiting.

  When the scratch concealing layer of the scratch card of the present invention contains both a pigment having an average particle diameter of 1.0 μm to 10 μm and a fine particle pigment having an average particle diameter of 0.01 μm to 0.1 μm, It is possible to leave a so-called “peel mark” on the scratch concealment layer when it is bent or bent for an unauthorized purpose, or when the scratch concealment layer portion itself is peeled off. The anti-counterfeiting property can be remarkably enhanced.

  As described above, the pigment component included in the ink composition for the scratch concealing layer is 20 pigment components such as metal fine powder and oxide fine powder thereof (of course, nitride or other compound fine powder may be used). A pigment group containing ˜80% is used, but as this pigment component, a pigment group having an average particle size of 1.0 μm to 10 μm and a relatively large particle size (“group” means that a plurality of pigments are mixed). ) And a fine particle pigment group having an average particle size of 0.01 μm to 0.1 μm, and by using these mixed systems, the fine particle pigment group enters a gap between the large particle size pigment group, and a scratch concealing layer When subjected to extreme deformation, the fine pigment group acts as a slipping agent between pigments having a large particle size, making the movement of the pigment having a large particle size easy and irreversible (causing plastic deformation) This I mean.). Further, it is also preferable to add 1% to 5% of a slipperiness imparting agent such as silicone oil or talc in order to promote this “slip” effect.

  If the scratch card is "bently deformed" from 90 degrees to 180 degrees for an illegal purpose, the scratch concealment layer itself is subjected to the same deformation, and one surface of the scratch concealment layer is a card base or a smooth layer. Since it is in a state in which it does not easily cause displacement deformation, its deformation pressure concentrates on the other surface of the scratch concealment layer, increasing the plastic deformation described above, and imposing on the other surface of the scratch concealment layer. Regular irregularities and irregular tears are generated, and the irregular irregularities and irregular tears are visually recognized as “peel marks”.

  In order to generate such “peeling marks” more reliably, the ratio of the pigment group having a large particle diameter to the fine particle pigment group is set to 10: 1 to 10:30, particularly 10: 5 to 10:10. It is preferable that

  If the ratio of the fine particle pigment group is less than 1 with respect to the pigment group 10 having a large particle diameter, it becomes difficult for “scratch marks” to occur in the scratch concealment layer. “Peeling marks” are less likely to occur.

  Furthermore, the use of a fragile resin that is prone to cohesive failure as the resin used in the ink composition for the scratch concealment layer also ensures the generation of this “peeling mark”. This means that the scratch concealment layer is partially removed by scratching with coins or claws.

  Furthermore, by providing a transparent substrate between the scratch concealing layer and the relief hologram forming layer, coins and nails can be prevented from scraping the surface of the relief hologram forming layer directly at the time of scratch-off, thereby forming a relief hologram. It is possible to prevent adverse effects on the “optical mirror surface” of the surface of the layer, and to remove the scratch concealment layer stably and surely without residue (meaning uncut residue). Can be.

  In particular, it is preferable to use a transparent substrate that has high scratch resistance and is not easily deformed by pressing with a nail or the like. For example, a material having a strong surface strength such as a three-dimensional crosslinked film, or a fluororesin If a card having such releasability and slipping nails or the like is used, a scratch card excellent in these effects can be obtained.

  About the others, the scratch card | curd of this invention can be similarly formed using the already demonstrated method.

  Further, in the above-described procedure, when the hologram relief is directly copied to the scratch concealment layer, the surface of the scratch concealment layer is rough, so the original plate is pressed against the surface and heated and pressurized. If a hologram relief surface is to be formed, very high heating and a large pressure are required, and the duplication accuracy is not uniform.

For this reason, it is easy to plastically deform the scratch concealing layer by blending the ink composition with a ratio of the pigment group having a large particle diameter and the fine pigment group as 10: 1 to 10: 5. Such a procedure is also preferable. Then, after making the outermost surface of the scratch concealment layer an “optical mirror surface” by using the flat pressure press or roll press as described above, the hologram relief is formed on the scratch concealment layer by replicating the hologram relief. It is more preferable to leave the state in a “mirror surface” state. (Since the hologram relief surface is a three-dimensional curved surface, the expression “mirror surface” used for “plane” is not appropriate, but the state of the three-dimensional curved surface is smooth like “mirror surface”. (In other words, the state of the mirror surface.)
Furthermore, after providing "secret information" on the card base material of the scratch card and providing the relief hologram forming layer so as to cover the "secret information", when providing the scratch concealment layer thereon, A scratch concealing layer is provided so as to cover the relief hologram forming layer to further conceal the presence of the relief hologram forming layer.

  In the first place, when a scratch concealing layer is provided on the relief hologram forming layer, a scratch concealing layer of the same size (and the same position) is provided on the relief hologram forming layer to expose the relief hologram forming layer. However, at this time, the cross section of the relief hologram forming layer is exposed (for example, even if the cross section is embedded in the card base, the card base itself has transparency). If this is the case, it means that the cross section of the card substrate can be discriminated by the same level.) By carefully observing the cross section, that is, by observing its gloss or applying illumination light. By observing the reflected light, there is a “some optically transparent layer” under the scratch concealment layer, and the “layer” is an “anti-counterfeiting optical It is ", just maybe, can not deny the possibility that led to the speculation that there may be a" hologram layer ".

  Alternatively, when the size of the scratch concealing layer is smaller than the size of the relief hologram forming layer, the possibility is made larger. In this case, only the hologram relief surface of the relief hologram forming layer is provided so as to be covered with the scratch concealment layer, or “hologram relief for design purposes” different from “hologram relief to be concealed” is provided. , So that a third party can see.

  In order not to make such a guess at all, under the scratch concealment layer, as if it were only the card substrate of the scratch card, so as to cover the relief hologram formation layer itself, from the area of the relief hologram formation layer, The scratch concealment layer is provided at least one size larger, for example, about 0.5 mm to several mm larger.

  In particular, there is a difference in the formation height of the scratch concealment layer between “the region where the relief hologram forming layer is present under the scratch concealment layer” and “the region where no relief hologram formation layer is present under the scratch concealment layer”. (Meaning that a step appears on the surface of the scratch concealment layer), and again, it is assumed that some layer exists under the scratch concealment layer. Therefore, the size is almost the same as that of the relief hologram forming layer. When the ink composition of the masking layer wraps around the cross section, that is, when making the scratch masking layer for printing, printing is performed using a plate whose size is increased by about 0.05 to 0.2 mm.

  Alternatively, in order not to cause such a step, the scratch concealment layer is formed in two stages. In the first step, the relief hologram forming layer part is included in the area, and the area excluding the part (card base material) For example, a scratch concealing layer (lower layer) having a size that is 2 to 10 times the size of the relief hologram forming layer is provided with a thickness (higher) that is substantially the same as the thickness of the relief hologram forming layer. In this case, the scratch concealing layer (upper layer) of the entire size including the portion of the relief hologram forming layer is formed, and the thickness of the lower layer is 1/10 to 30/10 times the thickness of the lower layer. Provided.

  Thus, when the formation size of the relief hologram forming layer is different from the formation size of the scratch concealment layer, the formation position of the hologram relief to be concealed in the relief hologram formation layer and the position of the “secret information” formation portion May overlap entirely or partially overlap.

  Such a complicated positional relationship is suitable as a restraint for a person who attempts to forge the scratch card of the present invention.

  Furthermore, in areas other than the area where the relief hologram layer is formed, the scratch concealment layer is a layer that is not easily scratched.For example, characters such as “illegal” and “disclosure” are fixed on the card base, It is also preferable to check against the act of trying to scratch off.

  In this case, when the lower layer of the scratch concealing layer described above is provided, a resin layer that is fixed in advance to the card base surface of the scratch card and has a strength (hardness) that cannot be removed by a nail or the like. The above-mentioned character pattern is printed, the pattern portion and the relief hologram forming layer portion are excluded, a lower layer of the scratch concealment layer is provided, and an upper layer of the scratch concealment layer is provided so as to cover them all. Need to be devised.

  When the scratch card of the present invention thus obtained is observed from its appearance, the “secret information” covered by the scratch concealment layer cannot be visually recognized, and the scratch card is I couldn't imagine that a hologram was embedded in it, but by scraping part of the scratch concealment layer of the scratch card with a coin, I could get "secret information" and a clear relief hologram playback image from the scraped area. It was possible to see at the same time.

  In addition, the scratch concealing layer curves the card substrate of the scratch card of the present invention containing a pigment having an average particle diameter of 1.0 μm to 10 μm and a fine particle pigment having an average particle diameter of 0.01 μm to 0.1 μm, If the cross section of the scratch concealment layer is exposed and a nail is applied to the cross section to try to peel off the scratch concealment layer, a “peel mark” is generated on the surface of the scratch concealment layer simply by curving the card substrate. However, it seems difficult not only to return the scratch concealment layer to its original state without leaving a trace of fraud, but also to make any alteration to the scratch card.

  Furthermore, the scratch concealment layer of the scratch card of the present invention in which the scratch concealment layer is provided so as to cover the relief hologram formation layer is partly scratched off without knowing the position of the “secret information” formation portion therebelow. As a result, “secret information” did not appear in the area, and eventually, all the scratch concealment layers were peeled off, and it became obvious at a glance that it was not a scratch-off by an authorized purchaser. This seemed to have a restraining effect against a person who was not a regular purchaser of a scratch card practicing fraud such as peeping at “secret information”.

It is sectional drawing of the scratch card | curd H1 which shows one Example of this invention. It is sectional drawing of the scratch card H2 which shows the other Example of this invention. It is sectional drawing of the scratch card | curd H3 which shows the further another Example of this invention. It is sectional drawing of the scratch card | curd H4 which shows the further another Example of this invention. It is sectional drawing of the scratch card | curd H5 which shows the further another Example of this invention. (A) is an example of a scratch card of the present invention, is a diagram embedded scratch concealing layer 5 on card substrate 1. FIG. 2B is a cross-sectional view taken along line AA in FIG. (In the figure, detailed structure of the "3-7" is omitted.) It is a diagram of printing the secret Mitsujo paper 2 on the scratch card in the card base member 1 of the present invention. A diagram showing another example of a scratch card of the present invention, the covering secret information 2, contact adhesive layer 7, relief hologram forming layer 3, the hologram relief 4, reflection thin film layer 6, and scratches concealing layer 5, a diagram in which a ground crest print 8. (In the figure, it is shown to emphasize only the tint block printing 8.)

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(Card base material and “secret information” forming part)
As the card substrate 1 used in the scratch cards H1 to H5 and 9 of the present invention, the “secret information” 2 display section can be provided, and at least the relief hologram forming layer 3 and the scratch concealment layer 5 are provided on the card. Any material that can be embedded in the substrate 1, that is, a plastic material, a metal material, a ceramic material, a biomaterial, a composite material thereof, a multilayer structure, or a more complicated combination thereof Or the like can be used. Moreover, an appropriate display by means of printing or the like according to the use of the scratch cards H1 to H5 and 9 of the present invention may be provided on the front and back surfaces. (See FIGS. 1 to 8. In FIGS. 6 to 8, printing such as “☆ scratch card ☆” is performed on the surface of the card base 1).
The shape can be any shape, that is, sheet, film, plate, cube, rectangular parallelepiped, card shape (magnetic card, IC card, non-contact IC card, post card, greeting card, business card, point card, license. Card, play card, etc.), postcard shape, leaf shape, form shape, slip shape, S-mail shape, label shape, seal shape, securities shape, passbook shape, passport shape, postal shape, delivery shape , Envelope shape, bag shape, box shape, case shape, disk shape, disk shape, ellipsoid shape, sphere shape, curved surface shape, rod shape, and combinations thereof, and processing such as deformation, cutting, drilling, adhesion, etc. The thing which gave can be adopted. Furthermore, any industrial product or any product such as an electronic terminal or a portable terminal can be used as the card substrate 1.

  The thickness thereof is not particularly limited as long as it can support the “secret information” 2 display section and can be handled, and is usually 3.0 μm to 3.0 mm. Of course, if it is an envelope shape or a box shape, the dimension of the three-dimensional shape is suitable for each application, and it is not necessary to be within this range.

  However, the “secret information” 2 provided on the card base material 1 is concealed by the scratch concealment layer 5, but the card base material is provided from the side where the scratch concealment layer 5 is provided or from the opposite side. 1, visible light irradiation with a large intensity exceeding 1000 lux, infrared irradiation of 0.5 W / square centimeter or more, ultraviolet irradiation of 0.1 W / square centimeter or more, X-ray irradiation of 1 gil / minute or more, etc. Irradiate a particle beam such as an electron beam of 100 kV or higher (generally referred to as “light beam”), and “transmission“ light beam ”” or “reflection“ light beam ”, and further, characteristic X-rays, etc. Therefore, in order to counter the attempt to read the secret information, the card substrate 1 has the property of “shielding”, “reflecting”, or “scattering” these “light rays”. It can be employed for.

That is, for visible light irradiation, a highly concealable pigment that blocks or scatters visible light, a scale-like metal material, or a metal plate itself may be mixed in the card base 1. The base paper used for the card substrate 1 is coated, laminated, or combined (the above are collectively referred to as “mixed”). (Not shown)
For infrared irradiation, an infrared absorber or the like is further applied. For ultraviolet irradiation, an ultraviolet absorber or the like is further applied. For X-ray irradiation, a lead material or the like among metal plates is used. For radiation, the effect can be increased by mixing materials that absorb these particle beams.

Further, as representative examples of these card base materials 1, materials and shapes used as so-called “prepaid cards”, materials and shapes used as “plastic cards”, particularly JIS standards (“prepaid card JIS X 6310 series ", JIS X 6301, JIS X 6300 series, JIS X 6320 series, JIS X 6330 series, etc.) and ISO standards (ISO / IEC 7810 series, ISO / IEC 7816 series, ISO / IEC 14443 series, ISO / IEC 15457 series, etc.) )). (Not shown)
Among them, the “embedding suitability” (a laminate of the relief hologram forming layer 3 and the scratch masking layer 5 can be stably embedded in the card substrate 1, and the outermost surface of the scratch masking layer 5 and the card base And “general versatility” (including processing versatility. “Processing versatility” means “protective layer / magnetic layer”). This means that the manufacturing line and manufacturing conditions for embedding the magnetic stripe consisting of “/ adhesive layer” in the card card base have been established.) “Used as“ plastic card ”as defined by JIS and ISO standards Card base and shape "are desirable.

  These are already widely distributed and popular all over the world, so there is no resistance to handling and holding them, and peripheral devices when carrying and using them (Means gate terminals for entrance / exit, station gate terminals, credit card terminals and other card-using devices) and related goods (means card holders for carrying cards, ornaments for cards, etc.) Etc. are already prevalent, and the application to these is smooth and suitable.

  In particular, an opaque film-like or sheet-like plastic is preferable in terms of its processing suitability and cost, and it is possible to reduce the thickness, and it also has mechanical strength, solvent resistance and heat resistance. It is done. For example, polyethylene terephthalate (PET), polycarbonate, polyvinyl alcohol, polysulfone, polyethylene, polypropylene, polystyrene, polyarylate, triacetyl cellulose (TAC), diacetyl cellulose, polyethylene / vinyl alcohol, polyvinyl chloride, polyvinylidene chloride And various plastic film materials. When these plastics are transparent, an opaque material such as titanium dioxide or calcium carbonate is added for the purpose of opacification. Moreover, a film-like or sheet-like plastic can be exemplified.

  Furthermore, a plastic film in which fluorine resin powder, silicon resin powder, or the like is mixed with these materials is preferable because of extremely high scratch resistance.

Then, at least the relief hologram forming layer 3 and the scratch concealment layer 5 are placed in the card substrate 1 at a heating temperature of 60 ° C. to 200 ° C., preferably 80 ° C. to 150 ° C., and a press pressure of 10 ⁴ Pa to ^{10 10.} Pa (N / sq. Meter), preferably 10 ⁶ Pa to 10 ⁸ Pa, can be used that can be embedded “on the same surface”.

  The thickness of the card substrate 1 made of a plastic material in the form of a film or a sheet is usually 3.0 μm to 1.0 mm, but it is 50 to 300 μm because of proper processing and handling as scratch cards H1 to H5. Is desirable.

If the thickness is less than 3.0 μm, the processing efficiency when the scratch concealing layer 5 is provided on the card substrate 1 or the relief hologram forming layer 3 is provided is inferior. If the thickness exceeds 1.0 mm, it will be difficult to handle in sheet processing and winding processing, which is not preferable. (See FIGS. 1-8.)
Specifically, a soft vinyl chloride sheet or a hard vinyl chloride sheet having a thickness of 50 μm to 1000 μm, or a combination thereof (meaning a laminate) is preferable.

A 100 μm soft vinyl chloride sheet is used as the card substrate 1, and a relief hologram forming layer 3 (5 μm) and a scratch concealment layer 5 (25 μm) laminated body having a total thickness of 30 μm (a strip shape having a width of 10 mm. Is sandwiched between 3 mm thick surface-finished stainless steel plates at a temperature of 150 ° C. and a pressure of 10 ⁶ Pa. → 150 ° C. → cooling → normal temperature ”heating and cooling cycle (1 cycle 30 minutes to 90 minutes), all the laminates are embedded in the card substrate 1 and the scratch concealment layer 5 The surface and the surface of the card substrate 1 were flush with each other.

  Under the same conditions, a laminate of 5 μm to 50 μm can be “same” with respect to a thickness of 100 μm of the card substrate 1, but for a laminate having a thickness exceeding 50 μm. The step at the boundary exceeds 1.0 μm, and it is necessary to set the conditions at higher temperature and higher pressure in order to be “level”.

  However, setting the above conditions to harsher conditions leads to large deformation and alteration of the card base 1, and is unsuitable for use as a scratch card 9, and is embedded in the thickness of the card base 1. The depth is “1/20 to 1/2 of the thickness of the card base 1”.

  Further, as described above, the “level” state means a state in which the step at the boundary is 1.0 μm or less, but “a small piece to be embedded (meaning the above-described stripe or the like)”. Depending on the size, the entire “small piece” is uniformly embedded (the thickness of the card substrate 1 including the “small piece” is the same at a place where the “small piece” is present or at other places). If there is a bias in the embedding amount of the “small piece” (the embedding amount of the central portion of the “small piece” is smaller than the end portion of the “small piece” (the portion close to the boundary)), the card base This includes the case where the material of the material 1 flows so as to cover the cross section of the “small piece”, and as a result, the “small piece” is embedded in the same plane.

  Further, in order to change from the “flat” state to the “recessed state”, a “heat-resistant peelable film (10 μm) / scratch concealing layer 5 (15 μm) is used instead of the above-mentioned laminate having a total thickness of 30 μm. ) / Relief hologram forming layer 3 (5 μm) ”is embedded in the card substrate 1 under the same conditions, and the peelable film is peeled off so that the outermost surface of the scratch concealment layer 5 is the card base. The surface of the material 1 can be recessed by 10 μm.

  That is, the thickness of the “peelable film” in the laminate can be recessed from the surface of the card substrate 1.

  The “dent” is 1/10 or less, preferably 1/20 or less of the thickness of the card base 1.

In addition, since such a “peelable film” serves as a substitute for the protective layer of the scratch concealment layer 5, it is left during the manufacturing process or in the distribution process and immediately before the authorized purchaser of the scratch card 9 scratches. By making it peel, it is possible to prevent the outermost surface of the scratch concealing layer 5 from becoming dirty or scratched. Furthermore, once the “peelable film” is peeled off, it is no longer easy to return it to the original state. Therefore, when an unauthorized person tries to restore the original state by applying an adhesive or the like, the “peelable film” In addition to impairing the peelability of the film, the “step” exceeds 1.0 μm and has the function of suggesting that fraud has been performed, so a scratch card with a “peelable film” added may be used. Is preferred. (The indented state and the state with a “peelable film” added are not shown.)
The “secret information” 2 concealed by the scratch cards H1 to H5 and 9 of the present invention includes characters, figures, symbols, patterns, marks, shapes, solids, or combinations thereof, or combinations of these and colors. In addition, any identification information such as an identification code, an identification number, and an identification character, and any other means that can be identified are not particularly limited and can be adopted. (See FIGS. 1-7.)
Examples of the identification means include visual identification, optical identification such as portable camera recognition and barcode recognition, machine identification, and other physical identification means.

  As long as they are identifiable, all of them may be the same or all of them may be individual, or may be unique to an individual, a company, or a specific industry.

  Moreover, it may be a shape, pattern or color of an article (including a part of the article), or a combination thereof that causes an aesthetic sense through vision, or a similar one, such as “design”. , Such as "trademark", a character, figure, symbol, three-dimensional shape, or a combination of these, or a combination of these and color, and used by a person who produces, proves or assigns goods as a business Or a person who provides or proves a service as a business, or may be similar to this. In addition, “title”, “trade name”, and a target to be collated in various scenes may be used.

  “Characters” include characters of all typefaces such as fonts and slave fonts, and “symbols” include special character symbols, emoticon symbols, electric character symbols, map symbols, etc. HTML symbols Symbols that are used only in limited scenes of limited industries such as, etc. are also preferred because of their particularity.

  In addition, English letters, Greek letters and other characters used in various countries, symbols, mathematical symbols, and the like are preferable because they cannot be memorized to the extent that an unauthorized person peeks at them instantaneously.

  Furthermore, only those who manage the operation of the scratch cards H1 to H5 and 9 by including hidden information that cannot be discriminated by simple information reading means such as visual observation or encryption information in these information are given to the predetermined information. It is also preferable that such hidden information and encrypted information can be read by the processing means.

  Those having such special characteristics may cause erroneous writing or erroneous input even in the case of registration or verification even by an authorized purchaser. Therefore, it is preferable to use automatic recognition means such as mobile camera recognition in combination.

  Hereinafter, these are collectively referred to as “numbers”.

  In addition, the “secret information” 2 includes a personal identification number, personal authentication number, account number, other individual-specific number, any individual number, lottery number, management number, etc., or just a serial number, etc. In addition, those that exhibit their effectiveness by registration, the same number such as a common key number that is an encryption key number, or a completely random number of scratch cards H1 to H5 and 9 Those who are allowed to know such as numbers that are generated when the card substrate 1 is produced and are designed so that no one including the creator knows the contents of the numbers (meaning regular purchasers, etc. Of course, scratches) Only the system designers of the cards H1 to H5 and 9 and the issuers of the scratch cards H1 to H5 and 9 may be included). Can not Cormorant set the number or the like can be included.

  Also, depending on the use of the scratch cards H1 to H5 and 9, not only the above-mentioned numbers, but also characters, figures, marks, etc., individuals and suppliers of the scratch cards H1 to H5 and 9 can be commonly recognized Anything can be used as long as this target is so-called “information”.

The recognition method also has a recognizable method other than visual, for example, an optical reading method, a magnetic reading method, or any other physical or chemical reading method while having at least information that can be recognized by visual confirmation. In order to increase the anti-counterfeiting, it is also possible to include an optical reading method using a hologram reproduction principle such as a machine readable hologram in a relief hologram reproduction image that can be visually recognized and overlapped with secret information. is there. (The recognition method and means are not shown.)
As a method of providing these “secret information” 2 on the card base 1 of the scratch cards H1 to H5 and 9, as a method of forming variable information, a thermal melting transfer method, a sublimation transfer method, an optical or physical method. There are a direct drawing method, an electrophotographic method, an ink jet method, and the like, and methods for forming fixed information include a gravure printing method, an offset printing method, a letterpress printing method, an intaglio printing method, a screen printing method, and the like. (See FIGS. 1-7.)
Of course, “secret information” 2 may be displayed on the display of the electronic terminal.

  Alternatively, a method may be used in which the card base 1 itself is made of a coloring material or a decoloring material, and variable information or fixed information is recorded using the coloring or decoloring principle.

  That is, on a card substrate 1 made of a heat-sensitive color developing material containing an electron donating leuco dye and an electron accepting developer, and on a paper material or a film material serving as a base paper constituting the card substrate 1, A thermosensitive color-developing layer containing a donor leuco dye and an electron-accepting developer is provided, and a pressure-sensitive color-developing layer comprising a capsule-containing color developer and a developer is provided on the base paper. Can be used as the card substrate 1.

  In addition, for the same purpose, a thermal rewritable layer using a temperature sensitive material or the like that can be operated repeatedly by color development and decoloring, or a photo rewritable layer using a photochromic material such as a fulgide type or a spiropyran type, for another purpose, It is also preferable to provide it at a position for the purpose of merely displaying information because its unexpectedness and anti-counterfeiting property are enhanced.

In particular, when these “rewritable layers” are provided and “secret information” 2 is displayed, “secret information” 2 appears only when the authorized purchaser confirms the “secret information” 2, otherwise By making it “non-display”, it is possible to prevent the “secret information” 2 from being viewed by an unnecessary third party. (Various configurations of the card base 1 are not shown.)
As the thermosensitive coloring material, a system comprising a color former, a developer, and a sensitizer can be used. As the color developer, a phthalide compound such as benzoylleucomethylene blue, crystal violet lactone, etc., as a developer. 4-benzyl biphenyl, fluorene, etc. are used as sensitizers, and acids such as 4-4 ′ biphenol and 1-naphthol.

  Thermal recording is a mechanism in which a color former and a developer dispersed in a layer on a base paper are melted by heat and brought into contact with each other to cause color development. A sensitizer with a low melting point is added to increase the sensitivity. By combining various acid generation methods and this color development mechanism, rewritable thermal recording capable of repeated writing and erasing can be realized. . For example, by stacking a red thermosensitive recording layer that develops color with low thermal energy and a black thermosensitive recording layer that develops color with high thermal energy, it is possible to record in two colors of red / black by using different applied energy. A two-color color thermosensitive recording material may be used.

  These leuco-based thermochromic materials and photochromic photochromic materials change their color development mechanism from “ultraviolet region or infrared region to visible region” and “change from visible region to ultraviolet region or infrared region”. The material can be used as an erasable recording material by selecting the material.

  Using such a decoloring mechanism, after the authorized purchaser confirms the “secret information” 2, the “secret information” 2 is erased promptly or at an appropriate timing according to the judgment of the authorized purchaser. It can be colored (erased) and its anti-counterfeiting property can be enhanced.

In this way, the “secret information” 2 forming part is provided on the card base 1, and the relief hologram forming layer 3 is provided on the card base 1 so as to cover the “secret information” 2 forming part. (See FIGS. 1-5.)
However, when these coloring or decoloring mechanisms are used, it is assumed that materials that do not show changes under the above-mentioned conditions for embedding in the card substrate 1 are used or changed under those conditions. However, a material having reversible changeability that returns to normal by returning to room temperature is used.
(Relief hologram forming layer and hologram relief)
The “secret information” 2 forming part is provided on the card base 1 of the scratch cards H1 to H5 and 9 of the present invention, and the relief hologram forming layer 3 is placed on the card base so as to cover the “secret information” 2 forming part. 1 is provided. (See FIGS. 1-5.)
As a resin material used for the transparent resin layer for constituting the relief hologram forming layer 3 of the scratch cards H1 to H5 and 9 of the present invention, various thermoplastic resins, thermosetting resins, or ionizing radiation curable resins Can be used.

  In particular, a thermosetting resin or an ionizing radiation curable resin that is not easily deformed and excellent in heat resistance under the above-described embedding conditions in the card substrate 1 is preferable.

As the thermoplastic resin, acrylic ester resin, that is, polymethyl methacrylate (refractive index n = 1.49), polymethyl acrylate (n = 1.47), polybenzyl methacrylate (n = 1.57), polybutyl acrylate (N = 1.44), polyisobutyl acrylate (n = 1.48), etc. Cellulosic resins, ie, cellulose nitrate (n = 1.54), methylcellulose (n = 1.50), cellulose acetate propio Nates (n = 1.47), vinyl resins, ie, polyvinyl acetate (n = 1.47), polyvinyl chloride / vinyl acetate (n = 1.54), acrylamide resins (n = 1.50) ), Polystyrene resin (n = 1.60) or the like, and as the thermosetting resin, unsaturated polyester resin (n = 1. 4), acrylic urethane resin (n = 1.60), epoxy-modified acrylic resin (n = 1.55), melamine resin (n = 1.56), epoxy-modified unsaturated polyester resin (n = 1.64), Alkyd resin (n = 1.54), phenol resin (n = 1.60), silicon resin (n = 1.41-1.60), or fluorinated resin (n = 1.35-1.38) Etc. (See FIGS. 1-5.)
These thermoplastic resins and thermosetting resins can be used alone or in combination of two or more. One or more of these resins may be cross-linked using various isocyanate resins, or various curing catalysts, for example, metal soap such as cobalt naphthenate or zinc naphthenate may be blended. Or peroxide such as benzoyl peroxide and methyl ethyl ketone peroxide for initiating polymerization with heat or ultraviolet light, benzophenone, acetophenone, anthraquinone, naphthoquinone, azobisisobutyronitrile, or diphenyl sulfide good.

  Examples of the ionizing radiation curable resin include epoxy acrylate, urethane acrylate, acrylic-modified polyester, etc., for the purpose of introducing a crosslinked structure into such an ionizing radiation curable resin or adjusting the viscosity, A monofunctional monomer, a polyfunctional monomer, or an oligomer may be blended and used.

In addition, a mixture of the above thermoplastic resin or thermosetting resin with a silicon resin or a fluorine-containing resin, or a silicone oil, or a thermoplastic resin or a thermosetting resin and a silicon resin or a fluorine-containing resin. And those obtained by introducing a siloxane bond [—Si (R ₁ ) (R ₂ ) —O—] or a fluorine atom [—F] into the molecule of a thermoplastic resin or thermosetting resin. Can be used.
Furthermore, the above-described thermoplastic resin or thermosetting resin in which silicon powder fine particles or fluorine powder fine particles are dispersed may be used.

  Fluorinated resins include perfluorinated fluorocarbon resins, tetrafluorinated resins, partially fluorinated resins, trifluorinated resins, polyvinylidene fluoride, polyvinyl fluoride, and fluorinated resin copolymers. Tetrafluoroethylene / hexafluoropropylene copolymer, ethylene / tetrafluoroethylene copolymer, ethylene / chlorotrifluoroethylene copolymer and the like can be used.

Furthermore, in order to form the relief hologram forming layer 3 using the above resin material, the relief hologram forming layer 3 can be directly formed by performing interference exposure of the hologram on the photosensitive resin material and developing it. Using a hologram or a replica thereof, or a plating mold thereof as a replication mold, and pressing the mold surface against a transparent resin layer created by press molding, injection molding, blow molding, or the like, Molding is performed to form four hologram relief surfaces. (See FIGS. 1 to 3 and FIG. 5.)
When thermosetting resin or ionizing radiation curable resin is used, curing is performed by heating or ionizing radiation irradiation while keeping the uncured resin in close contact with the mold surface, and then cured by peeling after curing. Relief hologram fine irregularities can be formed on one side of the transparent resin layer, and these fine irregularities become the hologram relief 4.

  A diffraction grating forming layer having a diffraction grating formed in a pattern by the same method can also be used as the light diffraction structure (that is, the hologram relief 4 of the relief hologram forming layer 3).

  The hologram is a recording of interference fringes due to the interference between the object beam and the reference beam in an uneven relief shape, for example, a laser reproduction hologram such as a Fresnel hologram, and a white light reproduction hologram such as a rainbow hologram, There are color holograms, computer generated holograms (CGH), holographic diffraction gratings, and the like using these principles. Further, as in a machine readable hologram, the reproduction light is converted into data by the light receiving unit, and transmitted as “secret information” 2 or partial configuration information of “secret information” 2, or authenticity determination is performed. It may be a thing.

  Furthermore, in order to precisely create fine irregularities (that is, hologram relief 4), not only optical methods but also electron beam drawing devices are used to create a precisely designed relief structure, making it more precise and complex. It is also possible to create a simple reproduction light. As the relief shape, the pitch or depth of the unevenness or a specific periodic shape is designed according to the light or the wavelength (range) of the light source, the reproducing direction and the intensity. The pitch (period) of the unevenness depends on the reproduction angle and is usually 0.1 μm to several μm, and the depth of the unevenness is a factor that greatly affects the reproduction strength, and is usually 0.1 μm to 2 μm.

  As in the case of a single diffraction grating, when the unevenness of exactly the same shape is repeated, as the adjacent unevenness is the same shape, the degree of interference of reflected light increases and the intensity increases, and the maximum value is reached. Converge. Diffraction in the diffraction direction is also minimized. When a single point of an image converges to a focal point, such as a stereoscopic image, the accuracy of convergence to the focal point is improved, and the reproduced image becomes clear.

  Further, if the hologram relief 4 has irregularities with a period or shape different from the irregularities of the hologram image, it becomes noise during reproduction of the hologram or diffraction grating, which causes the image to become unclear.

  The method of shaping (also referred to as replicating) the hologram relief 4 shape is performed by using an original plate on which diffraction gratings and interference fringes are recorded in a concavo-convex shape as a press die (referred to as a stamper). The concavo-convex pattern of the original plate can be duplicated by stacking and heating and press-bonding them with an appropriate means such as a heating roll. The hologram pattern to be formed may be single or plural.

  In order to accurately reproduce the above ultra-fine shape and to minimize distortion and deformation such as heat shrinkage after replication, the original plate should be made of metal and replicated at low temperature and high pressure. desirable.

  For the original plate, a metal having high hardness such as Ni is used. After a Cr or Ni thin film is formed on the surface of a glass master or the like formed by optical imaging or electron beam drawing by vacuum deposition or sputtering, 5 to 50 nm is formed, and then Ni is electrodeposited (electroplating, electroless) It can be made by peeling the metal after forming it to a thickness of 50 to 1000 μm by plating or further composite plating.

  In order to use it for high-pressure rotation type replication, it is necessary to increase the thickness accuracy of this Ni layer, and it is usually ± 10 μm, preferably ± 1 μm. For this reason, you may use the back surface grinding | polishing or the planarization method.

  Since the replication method is a high pressure, a rotary type is used instead of a flat plate type, and the linear pressure is set to 100 kg / m to 10,000 kg / m, preferably 5000 kg / m or more. If the diameter of the duplication cylinder is small, the reproducibility of the relief is lowered. Therefore, it is preferable that the duplication cylinder diameter is large. Usually, an arc having a diameter of 0.1 m to 2.0 m, preferably 1.0 m or more is used. To do.

  The relief hologram forming layer 3 is pressed along the duplicating cylinder, and duplication is performed from the back side by the metal cylinder at the above pressure. In order to minimize distortion and deformation such as heat shrinkage after replication, the entire relief hologram forming layer 3 is not heated, but only a portion of the relief hologram forming layer 3 on the hologram relief 4 surface side is heated. The method is desirable. Usually it is heated to 60 ° C to 110 ° C. Furthermore, the precision can be further improved by keeping the metal cylinder on the back surface at room temperature or cooling it.

Further, four sides hologram relief, even a scratch card H4 of the present invention work pollock can isosamples using a similar approach when at the interface between the relief hologram forming layer 3 and the adhesive layer 7, and the same A suitable effect can be acquired. (See Figure 4.)
In this case, the “secret information” 2 forming part is provided on the card base 1 of the scratch card H4 of the present invention, and the adhesive layer 7 is attached to the card base 1 so as to cover the “secret information” 2 forming part. After being provided on the relief hologram forming layer 3, the hologram relief 4 is duplicated on the exposed surface of the adhesive layer 7 using the same method as described above so as to fill the hologram relief 4. The same thickness and thickness are formed using the same material and method as described above. (See Figure 4.)
In the case of this configuration, the interface between the relief hologram forming layer 3 and the scratch concealing layer 5 provided thereon becomes a flat surface, and when the scratch concealing layer 5 is scratched off, to become a scratching coins and nails, relatively, scratch masking layer 5 is easily scraped, also, it is remaining cut the scratch card is less likely to occur, and are excellent in scratch-off properly.

This effect is further amplified when a release agent such as silicone resin or silicone oil is included in the relief hologram forming layer 3 at a ratio of 10 to 30%.
(Scratch hiding layer and tint block printing)
The “secret information” 2 forming part is provided on the card base 1 of the scratch cards H1 to H5 and 9 of the present invention, and the relief hologram forming layer 3 is placed on the card base so as to cover the “secret information” 2 forming part. After being provided on 1, a scratch concealment layer 5 is provided on the relief hologram forming layer 3 or so as to cover the relief hologram forming layer 3. (See FIGS. 1-5.)
As the ink composition used for the scratch concealment layer 5 of the scratch cards H1 to H5 of the present invention, a thermoplastic resin or a thermosetting resin can be used.

  In particular, a thermosetting resin that is not easily deformed and excellent in heat resistance under the above-described conditions for embedding in the card substrate 1 is preferable.

Thermoplastic resins include cellulose derivatives such as ethyl cellulose, cellulose nitrate, ethyl hydroxyethyl cellulose, cellulose acetate propionate, and cellulose acetate, styrene resins such as polystyrene and poly-α-methylstyrene, styrene copolymer resins, and polymethacrylic acid. Methyl, polyethyl methacrylate, polyethyl acrylate, polybutyl acrylate, and other acrylic or methacrylic acid ester homopolymers or copolymers, polyvinyl chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, polyvinyl Butylal resin, polybutadiene, styrene-butadiene copolymer, vinyl copolymer such as acrylonitrile-butadiene copolymer, rosin, rosin modified maleic acid resin, rosin ester resin such as polymerized rosin Coumarone resins, vinyltoluene resins, and polyamides, polyimides and the like. Further, a curing agent or the like may be mixed with these resins within a range satisfying the scratch-off property to prevent unnecessary peeling or peeling of the outermost surface of the scratch concealment layer 5 due to rubbing or the like. (See FIGS. 1-5.)
Examples of the thermosetting resin include silicon resin, melamine resin, polyurethane, phenol resin, rosin-modified phenol resin, epoxy resin, unsaturated polyester resin, and the like. As a silicon resin and rubber-based natural resin, natural rubber, hydrochloric acid rubber, polyisoprene, polychloroprene, and the like can be used.

  Furthermore, it is also preferable to use a biodegradable plastic as the ink composition used for the scratch concealment layer 5 in consideration of the environmental influence in the act of scratching off.

  Biodegradable plastics include lactone resins such as ε-caprolactone, polybutylene succinate resins such as polybutylene succinate-adipate, and polylactic acid such as low molecular weight aliphatic dicarboxylic acids and low molecular weight aliphatics. Polyester resins synthesized from diol, mixtures of modified polyvinyl alcohol, aliphatic polyester resins and starches, etc., or polymers obtained by adding aliphatic isocyanates to low molecular weight aliphatic polyesters, are also natural products. Suitable are animal natural substances such as gelatin, plant natural substances such as cellulose, or microorganism-producing substances such as polyhydroxybutyrate.

  As an ink composition used for the scratch concealment layer 5, in order to impart concealability and scratch properties to the entire solid content including these resin components, metal-based fine powder (aluminum powder, brass fine powder, copper fine powder) Powder, etc.), oxide fine powders thereof, fine nitride powders, and other compound fine powders containing 20 to 80% of pigment components are used.

  In order to further improve the concealing property of the scratch concealing layer 5, a pigment component having a strong concealing property such as barium sulfate or calcium carbonate may be contained in an amount of 1 to 10%. By configuring the ink composition for the scratch concealment layer 5 from the above composition, both the printability and the scratch property can be satisfied.

The scratch concealing layer 5 is obtained by diluting the composition with an appropriate solvent on the relief hologram forming layer 3 or covering the relief hologram forming layer 3, and the hologram relief 4 of the relief hologram forming layer 3. The thickness after drying is 5 μm to 50 μm, or even 10 μm to 30 μm, using a printing method such as an offset printing method, a gravure printing method, a screen printing method, an intaglio printing method, an ink jet printing method, etc. Form with thickness. (See FIGS. 1-5.)
Furthermore, as the ink composition for the scratch concealment layer 5, a metal paste, a resin material and an auxiliary agent dispersed in water and a lower alcohol to form an aqueous emulsion ink can be used. In particular, on the relief hologram forming layer 3 When the scratch concealing layer 5 is provided, it is preferable because unnecessary deformation and alteration are not given to the surface of the relief hologram forming layer 3.

  As the metal of the metal paste, bronze powder, which is an alloy of copper and zinc, or aluminum powder is used. Alternatively, an aluminum paste obtained by making aluminum fine powder and treating the surface with a fatty acid or the like into a paste with a hydrocarbon solvent having a high boiling point (mineral spirit or the like) may be used.

  In addition to the above, pigments for yellow, magenta, cyan, or black used for general printing inks, and extender pigments such as titanium white may be used as appropriate.

  As the resin material, polyurethane-based resin, polyacrylonitrile-based resin, polyacrylic acid-based resin, or the like can be used, and an aluminum paste or a color pigment is prepared by setting an emulsion of these resin materials to 25 to 50% of the ink composition. In addition, 10 to 35% of water and less than 5% of isopropyl alcohol are added and stirred to obtain an aqueous emulsion ink. An auxiliary agent such as an antifoaming agent, a surfactant, or a preservative can be added to this in an amount of 0.1 to 3%.

  For the formation of the scratch concealment layer 5 using this aqueous emulsion ink composition, a gravure printing method, a screen printing method, a flexographic printing method for printing via an anilox roller, or the like can be applied as a method suitable for full-surface printing or partial printing. .

  In addition, the ink composition for the scratch concealment layer 5 is obtained by dissolving a brittle resin that easily cohesively breaks in the solvent in a solvent, and the concealment pigment is aluminum powder (silver), brass powder (gold), copper Metal powder such as powder (red), or a mixture of white extender pigments such as talc or kaolin, or a mixture of a colored pigment or dye appropriately mixed with this can be used.

  As the resin that is easily cohesive failure, a blend resin obtained by blending different kinds of resins at an appropriate blending ratio can be used. For example, polyethylene, ethylene-vinyl acetate copolymer (EVA), polypropylene, polystyrene, styrene-based polymer, A blend resin in which any two or more of resins such as styrene-butadiene rubber, various waxes, rosin, terpene resins, and terpene polymers are blended in an appropriate ratio can be used.

  As a solvent for dissolving this resin, toluene, methyl ethyl ketone, methyl isobutyl ketone, xylene, cyclohexanol, isobutyl acetate, cyclohexane, methylcyclohexanone, glycol derivatives such as ethylene glycol monobutyl ether, or a mixed solvent thereof can be used.

  As pigments used in the ink composition for scratch concealment layer 5, organic pigments such as quinacridone red magenta, anthraquinone red yellow, polyazo yellow, benzimidazolone yellow orange, phthalocyanine pigment Copper phthalocyanine blue (α type, β type), copper phthalocyanine green, dissimilar metal phthalocyanine blue, selenium blue, azo pigments, soluble azo pigments (carmine 6B, permanent red 2B, etc.), insoluble azo pigments (disazo type, Monoazo, etc.), insoluble polycyclic pigments (red: quinacridone, perylene, diketopyrrolopyrrole, orange: perinone, perylene, diketopyrrolopyrrole, yellow: quinophthalone, isoindolinone, green: phthalocyanine, blue: phthalocyanine, in Dunslen , Purple: dioxazine, etc.), insoluble lake pigments (red: lake red C, watching red, etc.).

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

  The particle diameter of these pigments is finished as a pigment group having an average particle diameter of 1.0 μm to 10 μm or a fine particle pigment group having an average particle diameter of 0.01 μm to 0.1 μm. In particular, the fine pigment group tends to agglomerate and needs to be redispersed.

Further, when the scratch concealing layer 5 is provided on the relief hologram forming layer 3, it is provided so as to cover the relief hologram forming layer 3, thereby preventing the cross section of the relief hologram forming layer 3 from being exposed. The presence of can be further concealed. (See Figure 5.)
Of course, in the case of the configuration in which the adhesive layer 7 is provided, the scratch concealment layer 5 covers and conceals both the relief hologram forming layer 3 and the cross section of the adhesive layer 7. (Not shown)
In either case, the portion of the scratch concealing layer 5 that protrudes from the relief hologram forming layer 3 is directly bonded to the surface of the card substrate 1.

  Therefore, in this case, as the ink composition for the scratch concealment layer 5, the material should be selected in consideration of the adhesiveness with the card substrate 1 and various print display portions provided on the card substrate 1. Do.

  Further, since this “protruding portion” does not need to have particularly suitable scratch-off, it is firmly adhered to the card substrate 1 and remains on the card substrate 1 when the scratch concealment layer 5 is scratched off. May be designed as

  In particular, the remaining part of the fixed portion is marked with “predetermined pattern”, ie, “illegal”, “peeps”, “shaved”, “disclosure”, etc. The anti-counterfeiting property can be enhanced as a “pattern to be expressed”.

  For this purpose, the scratch concealment layer 5 can be formed by using the same printing method as described above.

  However, in order to provide the above-mentioned “predetermined pattern shape” fixing portion, the formation of the scratch concealment layer 5 is divided into two stages. In the ink composition for scratch concealment layer 5 to which a curing agent or the like in the resin material is added at a predetermined ratio of about 2 to 5 times, it is once provided thinner than the target thickness (for example, 1 / of the target thickness). 5-3 / 5 etc.) In the second stage, the ink composition for scratch concealment layer 5 is covered by the remaining thickness so as to cover the “predetermined pattern” portion (so as to fill other portions). A method of adding objects may be used.

On these scratch concealment layers 5, a thickness of 1.0 to 10.0 μm using offset printing, gravure printing or the like according to the design of the scratch cards H1 to H5 and 9 of the present invention. Then, the tint block printing 8 is performed. (Refer to FIG. 8. Geometric pattern tint print 8 is applied.)
Needless to say, the design of the scratch concealment layer 5 can be enhanced by printing a normal design (main design pattern or the like) other than the tint block printing 8.

Further, on the scratch concealment layer 5 or on the scratch concealment layer 5 and the tint block printing 8, a cellulose resin, a polyester resin, a vinyl resin, an epoxy resin, an acrylic resin, a copolymer thereof, May further enhance the concealment of the “secret information” 2 by forming a protective layer of ionizing radiation curable resin or the like to a thickness of 1 to 3 μm by a thermal melting transfer method, a sublimation transfer method, or an ink jet method. (Not shown)
However, since the surface of the scratch concealment layer 5 is a “rough” surface as described above, an ink jet method capable of printing following the unevenness, a thermal transfer method that is not easily affected by the unevenness, or a sublimation transfer. The tint block printing 8 may be performed using a method. Further, by using such a thermal transfer method or a sublimation transfer method, printing is performed only on the convex and concave portions of the scratch concealment layer 5, so that the tint block print 8 can be destroyed very easily by unauthorized scratches. You can also

  In particular, the sublimation transfer method can penetrate only into the resin layer constituting the scratch concealment layer 5 and create a unique texture.

The tint block printing 8 is also provided between the scratch concealing layer 5 and the relief hologram forming layer 3 (in this case, the tint block printing 8 is provided on the hologram relief 4 and the scratch concealing layer 5 is provided thereon. Or, after forming the ground pattern print 8 on the relief hologram forming layer 3 before forming the hologram relief 4, the hologram relief 4 is formed on both the relief hologram forming layer 3 and the ground pattern print 8 from above. Or, a procedure such as providing a tint block print 8 on the relief hologram forming layer 3 which is a flat surface, and then providing a scratch concealment layer 5 on the relief pattern formation layer 3) and scratch concealing the design and formation position. By making it the same on the upper and lower sides of the layer 5, when the scratch concealment layer 5 is scraped, the ground pattern design can be visually recognized as a continuous design. Both are suitable for increasing its unexpectedness and anti-counterfeit properties. (Not shown)
(Reflective thin film layer)
A reflective thin film layer 6 is formed so as to contact and follow the hologram relief 4 of the relief hologram forming layer 3 of the scratch card H3 of the present invention. Since the reflective thin film layer 6 needs to reflect incident light, it is not particularly limited as long as it is a thin film layer having a higher refractive index than the relief hologram forming layer 3. (See Figure 2.)
The reflective thin film layer 6 may be either a metallic glossy reflective layer such as a metal thin film formed by a vacuum thin film method or the like, or a transparent reflective layer. In the case of a metallic glossy reflective layer, “secret information” 2 is set. For the purpose of being visually recognizable (or capable of predetermined identification), “partial formation” is set with an area corresponding to “secret information” 2 of the metallic glossy reflective layer as an opening. In the case of a transparent reflective layer, it may be “completely formed” or “partially formed”, but it may be transparent so that “secret information” 2 can be visually recognized (or can be identified in a predetermined manner). It is essential.

  For the formation of the reflective thin film layer 6, a physical thin film forming method such as a vacuum thin film method or a chemical thin film forming method such as plating can be used, and its thickness is about 10 to 2000 nm, preferably 20 to 20 nm. It is provided to have a thickness of 1000 nm.

  The transparent reflection layer has a substantially colorless and transparent hue, and its optical refractive index is different from that of the relief hologram forming layer 3, so that it is possible to visually recognize the glitter of a hologram or the like even though there is no metallic luster. A transparent hologram can be produced.

For example, the high thin layer of refractive index than the relief hologram forming layer 3, as an _{example, ZnS, Ti O 2, Al} 2 O 3, Sb 2 S 3, SiO, and the like _Sn O 2, ITO.

  Preferably, it is a metal oxide or nitride, specifically, Be, Mg, Ca, Cr, Mn, Cu, Ag, Al, Sn, In, Te, Ti, Fe, Co, Zn, Ge, Pb. , Cd, Bi, Se, Ga, Rb, Sb, Pb, Ni, Sr, Ba, La, Ce, Au and other oxides or nitrides, etc., or a mixture of two or more thereof (transparent metal compound) Can be illustrated.

  In addition, a metal thin film having a general light reflectivity (reflection over almost the entire visible light wavelength, that is, a property close to “total reflection”) such as aluminum has transparency when the thickness is 20 nm or less. Can be used.

The transparent reflective layer (transparent metal compound layer) is formed by vapor deposition, sputtering, ion plating, CVD (chemical vapor deposition) so as to have a thickness of about 10 to 2000 nm, preferably 20 to 1000 nm, like a metal thin film. It may be provided by a vacuum thin film method or the like. In particular, the CVD method causes little thermal damage to the relief hologram forming layer 3. Even if other thin film forming methods are used, if the thin film layer to be formed is made thin, the thermal damage can be reduced. For example, in the case of an aluminum vapor deposition layer, depending on the formation conditions, a thickness of approximately 20 nm is a critical point where transparency is lost and total reflectivity appears. This thickness varies depending on the forming conditions such as the thin film material, the forming method, the metal heating temperature and the degree of vacuum.
(Adhesive layer)
Examples of the adhesive layer 7 include conventionally known solvent-based and water-based adhesives such as vinyl acetate resin, acrylic resin, vinyl acetate-acrylic copolymer, vinyl acetate-vinyl chloride copolymer, and ethylene-vinyl acetate copolymer. Examples thereof include polymers, polyurethane resins, and rubber resins such as natural rubber and chloroprene rubber. In order to environmentally friendly material composition, in particular, a latex mainly composed of natural rubber, those obtained by modifying them, natural rubber latex natural obtained especially by styrene particular graft polymerization of methyl methacrylate in a natural rubber You may use what was produced from the raw material. (See FIGS. 3 and 4.)
Solvents used for the adhesive layer 7 include solvents such as ketones (acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, diacetone alcohol, isophorone, diisobutyl ketone, etc.), alcohols (methanol, ethanol, isopropyl alcohol). , N-propyl alcohol, isobutyl alcohol, n-butyl alcohol, etc., and aqueous solutions thereof), aromatics (benzene, toluene, xylene, Solvesso No. 100, Solvesso No. 150, Cactus P-180, etc.), Cyclic hydrocarbons (such as cyclohexane), esters (such as ethyl acetate, butyl acetate, isobutyl acetate, propylene glycol monomethyl ether acetate, cellosolve acetate, ethyl-3-ethoxypropionate), ether S (tetrahydrofuran, methyl cellosolve, ethyl cellosolve, butyl cellosolve, t-butyl cellosolve.) And the like can be used.

  The formation thickness of the adhesive layer 7 is 1.0 μm to 30 μm.

The adhesive layer 7 can be formed by applying and drying on the card substrate 1 and the “secret information” 2 by a method such as gravure coating, roll coating, and comma coating. When more precise printing is required, a stainless screen printing method, a letterpress printing method, an offset printing method, a photoresist processing method, or the like can be used. (See FIGS. 1-5.)
The adhesive strength of the adhesive layer 7 is JIS Z0237 as the peel strength at the interface between the card substrate 1, “secret information” 2, the relief hologram forming layer 3, and the reflective thin film layer 6 and the adhesive layer 7. In the compliant peeling method at 180 °, it is desirable that the width is in the range of 1.0 to 3.0 kg / 25 mm. Of course, even higher peel strengths are suitable for the purposes of the present invention.

  In particular, the adhesive strength between the card base 1 and the “secret information” 2 forming portion on the card base 1 is determined from the purposes of the present invention, the card base 1 and the card of the scratch cards H1 to H5 and 9 of the present invention. The “secret information” 2 on the base material 1 needs to be large enough to be difficult to peel off from the formation part, but the “secret information” on the adhesive layer 7, the card base material 1 and the card base material 1. The peel strength at the interface between the adhesive layer 7 and the relief hologram forming layer 3 or the reflective thin film layer 6 is designed to be greater than the peel strength at the interface with the 2 forming portion.

Further, by using a resin having high refraction for the adhesive layer 7, the difference between the refractive index of the adhesive layer 7 and the refractive index of the relief hologram forming layer 3 is set to 0.3 or more. The reflected light from the interface of the adhesive layer 7, that is, the interface of the hologram relief 4 can be made larger, and the relief hologram reproduction image that appears due to this reflected light can be made clearer. (See Figure 4.)
In this case, the refractive index of the adhesive layer 7 is set to be 0.3 or more larger than the refractive index of the relief hologram forming layer 3, and further, the refractive index difference is 0.5 to 1.0. design.

  When the adhesive layer 7 is a layer having a high refractive index, a resin used for the relief hologram forming layer 3 can be appropriately selected and used, and in order to increase the refractive index, fine particle transparent pigments and ultrafine particles are used. Add pigment.

  As the fine particle transparent pigment and ultrafine particle pigment, those obtained by finely pulverizing extender pigments such as calcium carbonate, barium sulfate, aluminum hydroxide, clay, kaolin, white carbon, alumina white, diatomaceous earth, gypsum, talc, and silica powder, Uses inorganic fine particles such as microsilica, fine particle resin powders such as silicon resin and fluororesin powder, and other fine particle pigments having an average particle size of 0.1 μm to 0.01 μm, and ultrafine pigments having a particle size of 0.01 μm or less To do.

  Specifically, the average particle size is adjusted for finely pulverized naturally occurring calcite, ice sheets, aragonite, limestone, marble, shells, chalk, barite, gypsum, gibbstone, etc., and their composites. In addition, as for inorganic pigments and organic pigments that are generally used, those having an average particle size of 0.01 μm or less, such as ultrafine titanium oxide and ultrafine zirconium oxide, are appropriately resinous. It is suitable because it becomes transparent when mixed with the material. In particular, the pigment itself preferably has a refractive index of 2.0 to 3.0. When the refractive index exceeds 3.0, the metallic luster starts to appear, so that the transparency thereof is insufficient.

  As a specific example, when ultrafine particle titanium oxide (TTO-55N manufactured by Ishihara Sangyo Co., Ltd .: refractive index n = 2.4) is dispersed in an appropriate resin, the refractive index as the high refractive index resin layer 3 is 1 The refractive index as a “layer” when ultrafine zirconium oxide (average particle diameter 0.0001 μm to 0.05 μm in the dynamic light scattering method) is dispersed in an appropriate resin. Becomes 1.7 to 1.9.

  However, particles having this particle size are liable to agglomerate, and need to be subjected to redispersion treatment such as repeated passage through an appropriate dispersion treatment machine such as a kneader. The addition amount is determined by the balance between the degree of improvement of the refractive index and transparency, but usually 1% to 20% addition is preferable.

  The formation method and thickness are the above-described method and thickness.

  Resins used for layers having a high refractive index are acrylic resins, polyester resins, polyurethane resins, vinyl chloride resins, vinyl acetate resins, vinyl chloride-vinyl acetate copolymer resins, polyamide resins. Resin, melamine resin, phenol resin, etc. are mentioned.

  The refractive index of the resin used is, for example, an acrylic ester resin (refractive index n = 1.47), an acrylamide resin (n = 1.50), a nitrocellulose resin (n = 1.54), as a thermoplastic resin. Vinyl acetate resin (n = 1.47), polystyrene resin (n = 1.60) or the like, and as thermosetting resin, unsaturated polyester resin (n = 1.64), urethane resin (n = 1.60), epoxy-modified acrylic resin (n = 1.55), epoxy-modified unsaturated polyester resin (n = 1.64), alkyd resin (n = 1.54), or phenol resin (n = 1. 60) etc.

  Examples of the ionizing radiation curable resin include epoxy acrylate (n = 1.55), urethane acrylate (n = 1.54), acrylic modified polyester (n = 1.64), and the like.

  Furthermore, in consideration of the environment, the same biodegradable plastic as described above can be used.

When the scratch cards H1 to H5 and 9 of the present invention thus formed were observed under normal illumination light, it was determined that they were “scratch cards”, but under the scratch concealment layer 5 The “secret information” 2 that is estimated to be hidden is not visible at all, and it is impossible to imagine that the relief hologram forming layer 3 is embedded under the scratch concealing layer 5. there were. (See FIGS. 1-6.)
At this time, consecutive numbers 1 to 8 are printed as “secret information” 2 at a predetermined position on the card substrate 1 (see FIG. 7. In FIG. 7, a frame indicating the predetermined position is for convenience. The adhesive layer 7, the relief hologram forming layer 3, the scratch concealing layer 5, and the reflective thin film layer 6 are provided so as to cover the “secret information” 2 and embedded. It becomes. (See FIGS. 1-6.)
Further, a tint block print 8 made of a geometric pattern was applied on the scratch concealment layer 5 of the scratch card 9 of the present invention. (See Figure 8.)
In any case, the “secret information” 2 covered with the scratch concealment layer 5 cannot be visually confirmed, and from the appearance, the scratch cards H1 to H5 and 9 It was very difficult to know that the relief hologram forming layer 3 was present.

  And when the scratch concealment layer 5 of the scratch cards H1 to H5 and 9 of the present invention, or the copy-forgery-inhibited pattern printing 8 and the scratch concealment layer 5 are partially scraped off using coins, from the scraped area to the bottom thereof Although the hidden “secret information” 2 was visible, at the same time, a relief hologram reproduction image reproduced from the hologram relief 4 of the relief hologram forming layer 3 appeared, and its high design was confirmed. Forging cards H1-H5 and 9 appeared to be very difficult.

EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention further in detail, it is not limited to this. In addition, except a solvent, each composition of each layer is a mass part of solid content conversion.
Example 1
As a card substrate 1 of the scratch card 9, a hard vinyl chloride sheet having a thickness of 560 μm is sandwiched between two soft vinyl chloride sheets having a thickness of 100 μm, and a three-layer laminated vinyl chloride sheet (credit card size) having a total thickness of 760 μm is used. Use.

Predetermined design printing was performed on the hard vinyl chloride sheet by offset printing, and then a three-layer laminate was formed under predetermined lamination conditions. (See FIG. 1 and FIG. 6. The lamination state of the card base 1 is not shown.)
A number “12345678” (height of each numeric character 4 mm, width 2 mm, character spacing 1 mm) was printed as “secret information” 2 in a predetermined area of the card substrate 1 by an inkjet printer. (See FIG. 1 and FIG. 7.)
In order to cover the “secret information” 2 at a predetermined position on the card substrate 1, an ink composition for a relief hologram forming layer 3 having the following composition is formed by a stainless screen printing method with a length of 10 mm × width The relief hologram forming layer 3 was formed with a thickness of 5.0 μm as a thickness after drying with a size of 30 mm. (See FIG. 1. FIG. 1 shows a state where the “embedding” processing has already been completed.)
<Ink composition for relief hologram forming layer 3>
Melamine resin 30 parts Toluene 10 parts Methyl alcohol 10 parts Isopropyl alcohol 20 parts Ethyl cellosolve 20 parts Butyl cellosolve 10 parts Here, a Ni original plate provided with a hologram (relief hologram) with high design taken using a laser optical system The relief surface of the Ni original plate is aligned with the relief hologram forming layer 3 described above, and a rotary relief hologram forming device (original cylinder diameter 1.0 m, original plate surface temperature 100 ° C., pressurized cylinder diameter 0.3 m) is prepared. The hologram relief 4 (relief shape of the Ni original plate) was formed on the relief hologram forming layer 3 with a water cooling method, a pressure of 2000 kg / m, and a replication speed of 10 m / min. (See Figure 1)
Next, an ink composition for scratch concealment layer 5 having the following composition is formed on the relief hologram forming layer 3 by a stainless screen printing method so as to fill the hologram relief 4, and the thickness after drying is scratched. The concealing layer 5 is formed to a thickness of 15 μm, and the surface is sandwiched between mirror-finished stainless steel plates, and subjected to heating, pressurizing, and cooling treatment at 120 ° C., 106 Pa, and 60 minutes to obtain the final surface of the scratch concealing layer 5. The scratch card H1 or 9 of Example 1 was obtained with the surface and the surface of the card substrate 1 being “same”. (See FIG. 1 and FIG. 6. In FIG. 6, the layer covering “secret information” 2 is “3-5”, not “3-7”.)
<Ink composition for scratch concealment layer 5>
Acrylonitrile-butadiene copolymer 20 parts Acrylic resin 5 parts Pigment non-leafing aluminum paste Aluminum fine powder 40 parts Pigment leafing aluminum paste Aluminum fine powder 10 parts Isocyanate-based curing agent 1 part Toluene 10 parts Ethyl acetate 5 parts Ethyl cell solve 9 parts This When the scratch card H1 or 9 of Example 1 was observed under a normal fluorescent lamp, only the “silver-embedded printed layer” could be observed on the scratch card H1 or 9, below that. , And the “secret information” 2 formed therein and the existence of holograms could not be known. (See FIGS. 1 and 6)
Next, when the “silver embedded printed layer” on the scratch card H1 or 9 is scratched with a coin, the scratch concealment layer 5 is partially scraped, and a part of “secret information” 2 is removed from the scraped portion. At the same time, a relief hologram reproduction image “hologram with high design” by the hologram relief 4 of the relief hologram forming layer 3 appeared, and it seemed difficult to forge this scratch card H1 or 9. . (Not shown)
(Example 2)
A TiOx thin film is formed with a thickness of 200 nm on the hologram relief 4 surface of Example 1 by using an electron beam heating vacuum deposition machine to form a reflective thin film layer 6. A scratch card H2 of Example 2 was obtained in the same manner as Example 1 except that the scratch concealment layer 5 was provided. (See FIGS. 2 and 6. In FIG. 6, the layer covering “secret information” 2 is not “3-7” but “3-6”.)
When this scratch card H2 or scratch card H2 on 9 was evaluated in the same manner as in the separation 1, the relief hologram reproduction image “hologram with high designability” by the hologram relief 4 of the relief hologram forming layer 3 appeared more clearly. However, the same good results as in Example 1 were obtained except that it was more difficult to forge this sheet.

(Example 3)
On the surface opposite to the surface in contact with the relief hologram forming layer 3 of the scratch concealing layer 5 of Example 1 (the surface where the scratch concealing layer 5 is exposed), a yellow color consisting of a geometric pattern by a sublimation transfer printer. The scratch card H1 or 9 of Example 3 was obtained in the same manner as Example 1 except that the background pattern printing 8 was performed. (See FIG. 1, FIG. 6 and FIG. 8. In FIG. 1, the tint block printing 8 is not shown. In FIG. 6, the layer covering “secret information” 2 is not “3-7” but “3-5”. At this time, the print portion of the sublimation transfer printer, that is, the portion of the tint block printing 8 penetrates into the scratch masking layer 5, and the outermost surface of the scratch masking layer 5 and the surface of the tint block printing 8 are the same surface. Is forming.

When this scratch card H1 or 9 was evaluated in the same manner as in the first embodiment, it was found that the tint block print 8 had a unique texture and was observed in gold, and when scratched with a coin, the tint block print 8 and the scratch concealment layer The same good results as in Example 1 were obtained except that 5 was scraped at the same time and it was thought that forging of this sheet was more difficult. (Not shown)
Example 4
In Example 1, except that the relief hologram forming layer 3 was formed using the ink composition for the relief hologram forming layer 3 having the following composition to obtain a high refractive index resin layer having a refractive index n = 1.71. In the same manner as in Example 1, scratch card H1 or 9 of Example 4 was obtained. (See FIG. 1 and FIG. 6. In FIG. 6, the layer covering “secret information” 2 is “3-5”, not “3-7”.)
<Ink composition for relief hologram forming layer 3>
Urethane resin (refractive index n = 1.63) 30 parts Ultrafine zirconium oxide (average particle size: 0.001 μm, refractive index n = 2.10)
5 parts Toluene 5 parts Isopropyl alcohol 34 parts Butyl cellsolve 25 parts When this scratch card H1 or 9 is evaluated in the same manner as in Example 1, the relief hologram formed by the hologram relief 4 of the relief hologram forming layer 3 when scratched with coins Good results similar to those of Example 1 were obtained except that the reproduced image appeared more clearly. (Not shown)
(Example 5)
In Example 1, an adhesive composition for the adhesive layer 7 having the following composition was formed by a stainless screen printing method so as to cover the card substrate 1 and the “secret information” 2, and the thickness after drying As in Example 1, except that the adhesive layer 7 is formed to a thickness of 3.0 μm and the relief hologram forming layer 3 is provided thereon (see FIG. 3). Scratch card H3 or 9 was obtained. (See FIG. 3 and FIG. 6. In FIG. 6, the layer covering “secret information” 2 is not “3-7” but “3-5, and 7”.)
When this scratch card H3 or 9 was evaluated in the same manner as in the implementation separation 1, the "secret information" 2 is firmly fixed to the card base 1 or more by the adhesive layer 7, and it is considered that the scratch-off is excellent. Except for this, the same good results as in Example 1 were obtained. (Not shown)
・ <Adhesive composition for adhesive layer 7>
Vinyl acetate-acrylic copolymer 30 parts Isophorone diisocyanate 0.1 part Toluene 10 parts Isopropyl alcohol 20 parts Ethyl acetate 30 parts Ethyl cellosolve 10 parts (Example 6)
The ink composition having the following composition was used as the relief hologram forming layer 2 and the adhesive layer 7 of Example 5, and further, the hologram relief 4 was not copied on the relief hologram forming layer 3 but on the adhesive layer 7. The scratch card H4 or 9 of Example 6 is the same as Example 1 except that the relief hologram forming layer 3 is formed so as to fill the hologram relief 4 on the adhesive layer 7. Got. (See FIG. 4 and FIG. 6. In FIG. 6, the layer covering “secret information” 2 is not “3-7” but “3-5, and 7”.)
<Ink composition for relief hologram forming layer 3>
Polybutyl acrylate (n = 1.44) 30 parts Toluene 10 parts Methyl alcohol 10 parts Isopropyl alcohol 20 parts Ethyl cellosolve 20 parts Butyl cellosolve 10 parts ・ <Ink composition for adhesive layer 7: Refractive index n = 1.85 Layer with high refractive index>
Urethane resin (refractive index n = 1.60) 30 parts Ultrafine zirconium oxide (average particle size: 0.001 μm, refractive index n = 2.10)
6 parts Toluene 5 parts Isopropyl alcohol 34 parts Butyl cellsolve 25 parts When this scratch card H4 or 9 was evaluated in the same manner as in Example 5, the coin was scratched on the flat surface of the relief hologram forming layer 3 when scratched with coins. The scratch concealment layer 5 is not scraped off and can be removed cleanly, and it is considered that the scratch relief is excellent, and the relief hologram reproduction image by the hologram relief 4 is clearer. Thus, the same good results as in Example 5 were obtained except that the anti-counterfeiting property seemed to be improved. (Not shown)
(Example 7)
In Example 1, using the ink composition for scratch concealment layer 5 having the following composition, the same procedure as in Example 1 was carried out except that the scratch concealment layer 5 was formed in the same manner and with the same thickness. The scratch card H1 or 9 of Example 7 was obtained. (See FIG. 1 and FIG. 6. In FIG. 6, the layer covering “secret information” 2 is “3-5”, not “3-7”.)
<Ink composition for scratch concealment layer 5>
Acrylonitrile-butadiene copolymer 20 parts Acrylic resin 5 parts Pigment aluminum paste Aluminum fine powder (average particle size 8 μm) 30 parts Fine zirconium oxide (average particle size: 0.01 μm) 20 parts Silicone oil 5 parts Toluene 10 parts Ethyl acetate 5 Part Ethyl Cellosolve 5 parts This scratch card H1 or 9 was evaluated in the same manner as in Example 1 and the card substrate 1 was bent nearly 90 degrees to peel off the scratch concealment layer 5. In addition to the same good results as above, wrinkles in the form of “peeling marks” occur in the scratch-uncovered portion of the scratch concealment layer 5 and the wrinkles do not disappear even if the card substrate 1 is returned to a flat state again. (Conversely, some of the wrinkles occurred up to the tears.) Except always that appeared to be difficult to obtain good results as in Example 1. (Not shown)
(Example 8)
In Example 1, the printing size of the scratch concealment layer 5 is a size of length 12 mm × width 32 mm, and is formed so as to protrude 1 mm from the top and the left of the relief hologram forming layer 3, and the thickness of the relief hologram forming layer 3 A scratch card H5 or 9 of Example 8 was obtained in the same manner as in Example 1 except that the thickness was 3.0 μm and the thickness of the scratch concealment layer 5 was 20 μm. (See FIGS. 5 and 6. In FIG. 6, the layer covering “secret information” 2 is not “3-7” but “3-5”.)
When this scratch card H5 or 9 was evaluated in the same manner as in Example 1, illumination light was applied obliquely from above or a magnifying glass on the scratch card H5 or 9 in order to visually recognize the cross section of the relief hologram forming layer 3. However, the cross section was not visible at all, and the same good results as in Example 1 were obtained except that the concealment of the relief hologram forming layer 3 was felt to have increased.
(Comparative example)
A scratch card of a comparative example was obtained in the same manner as in Example 1 except that the scratch hologram was formed without providing the relief hologram forming layer 3 in Example 1.

  When this scratch card was evaluated in the same manner as in Example 1, the “secret information” 2 could be visually recognized by scratch-off, but a hologram reproduction image did not appear, and it was found to be a normal scratch card. It was estimated that forgery was possible.

H1 to H5, 9 Scratch card 1 Card base 2 “Secret information” (“12345678” is formed as “secret information” 2 and is schematically shown)
3 Relief hologram forming layer 4 Hologram relief 5 Scratch concealing layer 6 Reflective thin film layer 7 Adhesive layer 8 Background pattern printing

Claims (5)

A scratch card that conceals confidential information provided on a card substrate,
A relief hologram forming layer and a scratch concealment layer are provided in this order so as to cover the secret information, and the relief hologram formation layer and the scratch concealment layer are embedded in the card substrate, and the scratch concealment layer The outermost surface is flush with the surface of the card base, or at a position recessed from the surface of the card base,
By removing the scratch concealing layer by scratching, the secret information and a relief hologram reproduction image reproduced from the relief hologram forming layer can be visually recognized.   2. The scratch card according to claim 1, wherein a reflective thin film layer is provided in contact with the hologram relief surface of the relief hologram forming layer so as to follow the hologram relief.   The scratch card according to claim 1 or 2, wherein a copy-forgery-inhibited pattern printing is performed on a surface of the scratch concealing layer opposite to a surface in contact with the relief hologram forming layer. The scratch according to any one of claims 1 to 3, wherein the relief hologram forming layer is a high refractive index transparent resin layer, and the refractive index of the relief hologram forming layer is greater than 1.7. card. The scratch card according to any one of claims 1 to 4, wherein an adhesive layer is provided between the card substrate and the relief hologram forming layer.

Images