JP6136643B2 - Scratch card - Google Patents

Description

  The present invention relates to a scratch card provided with a scratch concealment layer and a hologram layer for concealing a secret information display part on a card base material, the scratch concealment layer covering the secret information display part on the card base material Further, the present invention relates to a scratch card in which the secret information can be concealed by providing the hologram layer, and when the scratch concealment layer and the hologram layer are scraped off, the secret information can be visually recognized.

  In particular, since the scratch concealment layer is partially formed and embedded in the card substrate, and the hologram layer covering the entire card is provided thereon, a third party who cannot know the proper arrangement Even if you try to peel off the hologram layer or scratch concealment layer with the intention of looking into the secret information behind it, it is difficult to identify the position of the scratch concealment layer in the first place. I have to cut it.

  Moreover, since the scratch concealment layer is embedded in the card base material, it is not possible to put a nail in the cross section, and eventually there is no means other than scraping out the scratch concealment layer, and once scraped, The present invention relates to a scratch card in which it is very difficult to restore the scratch concealment layer in the concave portion, and the alteration such as reattachment or the forgery is physically impossible.

  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.

In the present invention, the “hologram relief forming surface on both the surface of the card substrate in contact with the hologram relief forming surface of the relief hologram forming layer and the surface of the scratch concealing layer covering a part of the surface of the card substrate. The relief shape corresponding to the relief shape is provided in a planar shape as one continuous relief shape.
The “hologram relief provided on the relief hologram forming layer” itself is positioned as “one continuous relief shape”, and this “one continuous relief shape” is in contact with the hologram relief forming surface. And the surface of the scratch concealing layer are so-called “transfer-formed”, and the “surface of the card substrate and the surface of the scratch concealing layer” has the “one continuous relief shape”. The state is also provided in one “plane”.

  As a representative example, “the scratch concealment layer is embedded in the card base, and one side of the scratch concealment layer and the card base is“ coplanar ”. “There is a state where the hologram relief is provided on both surfaces (meaning both surfaces of both layers)”. Hereinafter, this representative example will be described in detail.

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, “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, the curved surface is a “smooth surface” that does not have irregular irregularities that deviate from the desired curved surface, and “a microscopic surface in the three-dimensional curved surface The value of the average surface roughness Ra in a very small area that can be approximated to a plane within the area is 0.01 μm to 0.1 μm in any microscopic area ”.

  Then, on the “certain layer” having the “optical mirror surface” on the surface thereof, the surface smoothness is maintained (meaning that the surface shape is not changed at all). When another layer is stacked, the interface between this “one layer” and “another layer” is an “optical mirror surface”.

  In the present invention, the “high refractive index layer” means a “resin layer having a high refractive index”, and here, it means a resin layer having a refractive index n exceeding 2.3.

  The refractive index n is represented by a value obtained by dividing the light velocity (c) in vacuum by the light velocity (v) in the medium (more precisely, the phase velocity). Unless otherwise specified, the refractive index value is This is for light having a D-line wavelength of 589.3 nm of sodium. The refractive index n for “a layer that does not transmit this light” is defined by the nature of the reflected light of the light on the surface of the “non-transmitted layer” in vacuum.

  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 with no layer at all, it had the disadvantage of not preventing 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

  In the present invention, the scratch concealment layer is embedded in the card base material, and the hologram layer is provided so as to cover the entire one surface of the card base material including the embedded portion. Scratch card that prevents alteration such as carefully peeling off and makes it difficult to counterfeit because the hologram reproduction image is visually recognized by reflected light from the interface between the hologram layer and the scratch concealment layer I will provide a.

  In particular, the interface between the hologram layer and the scratch concealment layer is an “optical mirror surface”, and the scratch concealment layer is a “high refractive index layer” to ensure the clarity of the hologram reproduction image. It is very difficult to counterfeit, and furthermore, when a card having a different average particle diameter is arranged in the scratch concealing layer and the card is bent for an improper purpose, the peeling mark is generated, Provided is a scratch card capable of remarkably enhancing the anti-counterfeiting property as a structure in which the peeling trace cannot be repaired.

To achieve the above objective,
The first aspect of the scratch card of the present invention is:
A scratch card that conceals confidential information provided on one surface of a card substrate,
A scratch concealment layer is provided on a part of the surface of the card base so as to cover the secret information, and a relief hologram forming layer is provided on the entire one surface of the card base so as to cover the scratch concealment layer. Are provided in this order, and both of the surface of the card substrate that contacts the hologram relief forming surface of the relief hologram forming layer and the surface of the scratch concealing layer that covers a part of the surface of the card substrate In addition, a relief shape corresponding to the relief shape of the hologram relief forming surface is provided in a planar shape as one continuous relief shape, and by removing the relief hologram forming layer and the scratch concealment layer by scratching, The secret information is visible.

According to the scratch card of the first aspect,
A scratch card that conceals confidential information provided on one surface of a card substrate,
A scratch concealment layer is provided on a part of the surface of the card base so as to cover the secret information, and a relief hologram forming layer is provided on the entire one surface of the card base so as to cover the scratch concealment layer. Are provided in this order, and both of the surface of the card substrate that contacts the hologram relief forming surface of the relief hologram forming layer and the surface of the scratch concealing layer that covers a part of the surface of the card substrate In addition, a relief shape corresponding to the relief shape of the hologram relief forming surface is provided in a planar shape as one continuous relief shape, and by removing the relief hologram forming layer and the scratch concealment layer by scratching, It is possible to provide a scratch card characterized in that the secret information becomes visible, Peep or of "secret information", it is possible to provide a scratch card that was difficult to counterfeiting and alteration.

The second aspect of the scratch card of the present invention is:
The interface between the scratch concealing layer and the relief hologram forming layer is an “optical mirror surface”.

According to the scratch card of the second aspect,
The scratch card according to the first aspect is characterized in that the interface between the scratch masking layer and the relief hologram forming layer is an “optical mirror surface”, and a clearer hologram reproduction image appears. It is possible to provide a scratch card that is capable of improving the anti-counterfeiting property and the design property.

The third aspect of the scratch card of the present invention is:
The scratch concealing layer is a high refractive index layer, and the refractive index of the scratch concealing layer is 1.0 or more larger than the refractive index of the relief hologram forming layer.

According to the scratch card of the third aspect,
The scratch masking layer is a high refractive index layer, and the refractive index of the scratch masking layer is 1.0 or more larger than the refractive index of the relief hologram forming layer. The scratch card of the aspect can be provided, and a clearer hologram reproduction image can appear, and the scratch card with improved forgery prevention and design can be provided.

The fourth aspect of the scratch card of the present invention is:
The scratch concealing layer contains a pigment having an average particle diameter of 1.0 μm to 10 μm and a fine pigment having an average particle diameter of 0.01 μm to 0.1 μm.

According to the scratch card of the fourth aspect,
The scratch card according to the first to third aspects, wherein the scratch masking layer contains a pigment having an average particle diameter of 1.0 μm to 10 μm and a fine pigment having an average particle diameter of 0.01 μm to 0.1 μm. Can be provided, and a scratch card with significantly improved forgery prevention can be provided.

  As the card substrate used in the scratch card of the present invention, a secret information display portion can be provided, and a scratch concealing layer can be embedded in the card substrate, and a relief hologram forming layer and Any material having an adhesive property as described above, that is, a plastic material, a metal material, a ceramic material, a biomaterial, a composite material thereof, or a material having a multilayer structure thereof can be used.

  Here, “embed the scratch concealment layer in the card substrate” means that “the outermost surface of the scratch concealment layer, which is the interface between the relief hologram forming layer and the scratch concealment layer, is the surface of the card substrate. "It ’s all the same.”

  As an example, “scratch concealment with a thickness of 10 μm and a width of 10 mm × a length of 30 mm so that the hologram relief is embedded in a part of the hologram relief surface of a relief hologram forming layer having a credit card size area with a thickness of 10 μm. A two-layer laminate in which layers are partially laminated (the interface between the relief hologram forming layer and the scratch masking layer is a part of the “hologram relief”), and a laminated sheet (card A cuboidal piece of width 10mm x length 30mm x height 20μm on a very thin cuboid sheet with a thickness of 10μm and a credit card size of 760μm thick soft The scratch concealing layer of the two-layer laminate is sandwiched between the surfaces of the card base made of a vinyl chloride sheet, and the The layer is covered so that the mask concealing layer is arranged at the center of the card base material, and this laminate is subjected to a heating cycle of normal temperature → 150 degrees → normal temperature (one cycle 30 minutes to 90 minutes) and the surface. With the flat plate sandwiched between the mirror-finished stainless steel plates, applying a pressure of 1.0 MPa (megapascals, N / square millimeter), the total thickness of the scratch concealment layer is within the 760 μm soft vinyl chloride sheet. Means embedding.

  As a result, the relief hologram forming layer is formed on the entire surface of the card substrate.

  At this time, the outermost surface of the relief hologram forming layer formed on the entire surface of the card substrate is measured by using a stylus type surface roughness meter, and the boundary area of the portion where the scratch concealment layer is embedded is measured. A state in which the step is 1.0 μm or less is a state where it is “flat”.

  Furthermore, in order to “embed the scratch concealment layer in the card substrate”, a recess having a depth of 20 μm, a width of 10.2 mm, and a length of 30.2 mm is provided in advance on the surface of the card substrate (by using plastic or the like). In that case, a “dent” may be provided during the molding process, or the card substrate surface may be cut by cutting or the like to provide a recess.) The above-described scratch concealment layer enters the recess. Fixing in this way is also preferable from the standpoint of manufacturing 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. Therefore, “the relief hologram forming layer is provided on one side of the card base so as to cover the scratch concealment layer” means that the card base such as “plastic card” or “prepaid card” is used. , "The entire surface (the entire surface) of the one side", but when the above-mentioned "card base material having various shapes" is adopted, "predetermined card base material having various shapes" And a relief hologram forming layer is provided "so as to cover the scratch concealment layer (occupying a part of the area)".

  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 the card base material is concealed by the scratch concealment layer, but the side face provided with the scratch concealment layer has a strength against the card base material from the opposite side face. Irradiate large visible rays, infrared rays, ultraviolet rays, X-rays, etc., and electron beams and other particle beams (the above are collectively referred to as “light rays”), and the “transmission“ light rays ”” and “reflection” In order to counter the attempt to read the secret information itself and the position of the scratch concealment layer from “light rays” and characteristic X-rays, etc., these “light rays” are designated as “ It is desirable to have the property of “shielding”, “reflecting”, or “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 the number, etc. that was created when making it so that no one including the creator knows the contents of the number (meaning an authorized purchaser. Of course, the system designer of the scratch card) Or a scratch card issuer, etc.) that can only be seen by others, but not by others. And the like.

  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 base of the scratch card by the above-described method or method, and the “secret information” is covered with an appropriate arrangement of the scratch concealing layer and the relief hologram forming layer. The relief hologram forming layer on which the relief hologram reproduction image appears and the scratch concealment layer in a partial area behind the relief hologram forming layer are removed by scratch (relief of the relief hologram forming layer). The position of the scratch concealment layer on the back can be determined by the positional relationship with the hologram design of the relief hologram forming layer, and scratching is performed based on the positional relationship.) By creating a scratch card that can be viewed, the "secret information" can be viewed by a third party. And a legitimate user scratches the relief hologram forming layer and the scratch concealment layer to form a scratch card that can read the “secret information”. be able to.

  Here, an adhesive layer is provided between the card base material and the “secret information” forming portion and the scratch concealing layer, and the card base material, “secret information”, adhesive layer, scratch concealing layer, and relief hologram forming layer are provided. (This adhesive layer may be provided corresponding to the scratch concealing layer, or may be provided corresponding to the entire relief hologram forming layer including the position of the scratch concealing layer). Furthermore, a reflective thin film layer is provided on the hologram relief surface, or a background pattern is printed between the scratch concealment layer and the relief hologram forming layer. Of course, the background pattern is formed on the relief hologram forming layer (on the top layer). Printing is also preferable because it has the effect of enhancing the anti-counterfeiting property and improving the design.

  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 the scratch concealment layer, the relief hologram forming layer, or the adhesive layer, scratch concealment so as to cover the “secret information”. Reflected on the layer, relief hologram forming layer, or on the scratch concealing layer, or on the relief hologram forming layer with a copy-forgery-inhibited pattern printed, on the relief hologram forming layer, or on the hologram relief on the scratch concealing layer In addition, the “scratch hiding layer and relief hologram forming layer”, “adhesive layer, scratch hiding layer, relief hologram forming layer, and a copy-forgery-inhibited pattern printing are provided on the scratch hiding layer. Or between the scratch concealing layer and the relief hologram forming layer In addition, the scratch concealment layer portion of the laminate such as “with a copy-forgery-inhibited pattern printing” or “a hologram relief of the scratch concealment layer or a hologram relief of the relief hologram forming layer added with a reflective thin film layer” Is embedded in the card base material, and the relief hologram forming layer is formed on the entire surface of the card base material so as to cover the portion.

  Accordingly, the “reflective thin film layer” may be formed corresponding to the entire area of the relief hologram forming layer, or at least the scratch concealment layer is covered, and the other portions are formed as “thin film patterning”. You may form as what is called a "pattern shape" which processed.

  It goes without saying that the “adhesive layer” can be formed in the same manner with respect to the formation position and pattern of the “adhesive layer”.

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 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, or spin coating using a solvent that does not dissolve or alter the scratch concealment layer. Using a forming means such as a 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.

  Alternatively, a procedure can be used in which a relief hologram forming layer is provided in advance on the appropriate peelable film with the above thickness, and a hologram relief is formed on the exposed surface of the relief hologram forming layer. However, also in this case, the above forming means can be used as appropriate.

  If the thickness is less than 1.0 μm, it becomes difficult to form a hologram relief. If the thickness exceeds 50 μm, the balance with the thickness of the scratch concealment layer partially provided on the relief hologram forming layer deteriorates. , Hindering the embedding of the scratch concealment layer into the card substrate (meaning that the embedding pressure does not concentrate on the scratch concealment layer portion and is dispersed), or the card of the scratch card The total thickness of the scratch concealment portion on the substrate (referred to as a laminated portion such as a relief hologram forming layer and a scratch concealment layer for concealing “secret information”) becomes too large, and the scratch suitability is lowered.

  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.

  Alternatively, by using the above original plate, the hologram relief is duplicated on the exposed surface of the scratch concealment layer provided on the “card substrate provided with“ secret information ”, and the hologram relief surface of the scratch concealment layer is buried. By providing a relief hologram forming layer, a hologram relief can be provided on the relief hologram forming layer.

  Of course, in this case, a scratch concealment layer having a predetermined thickness is embedded in the card base in advance, and not only the exposed surface of the embedded scratch concealment layer but also the “card base” that is “same”. It is preferable to provide a hologram relief on the “material” surface at the same time, and the “continuity” of the hologram relief (“hologram relief on the surface of the scratch concealment layer” and “hologram relief on the card substrate surface” is “continuous”. It is also preferable to have a proof of authenticity.

  Alternatively, an ionizing radiation curable resin is filled between the card substrate surface and the hologram relief surface of the scratch concealing layer and an appropriate transparent film having a mirror-finished surface, and the resin is cured with ionizing radiation. After that, the film is peeled to form a laminate of the scratch concealment layer and the relief hologram forming layer having a more precise hologram relief interface on the card substrate.

  In this hologram relief surface, light incident from the relief hologram forming layer is reflected by the hologram relief surface of the card substrate surface and the scratch concealment layer, and returns including the phase difference of the hologram relief, thereby reproducing the relief hologram. An image 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 scratch concealment layer is a “high refractive index layer”.

  However, in order to “conceal” the position of the scratch concealment layer behind it as viewed from the relief hologram forming layer side, “camouflage” the position with “hologram design provided on the relief hologram forming layer”. (E.g., placing a high-luminance area of the hologram reproduction image in the area of the scratch concealment layer), or making the color tone of the card base surface and the scratch concealment layer substantially the same, or changing their "refractive index" “High refractive index” (meaning that the reflectance on the hologram relief surface is increased so that it is difficult to visually recognize the back), and substantially the same (the difference in refractive index is It means 0.1 or less.)

  Of course, it is needless to say that providing a reflective thin film layer is most suitable for the “hiding”.

  Here, the “high refractive index layer” is a “resin layer having a high refractive index”, and means a resin layer having a refractive index n exceeding 2.3. As the scratch concealing layer, a “high refractive index layer”, that is, a resin material having a high refractive index n of 1.7 to 2.3 is used, and pigments and fine particles having a higher refractive index are used for the resin material. By including a pigment, the refractive index difference at the interface between the relief hologram forming layer and the scratch concealing layer can be made 1.0 or more, and the intensity of the reflected light described above is very large, so that a clearer relief hologram can be obtained. It is possible to make a reproduced image 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, since the hologram relief surface is below the relief hologram forming layer, that is, at the interface between the relief hologram forming layer and the scratch concealing layer, only the reflected light at this interface affects the definition of the relief hologram reproduction image. Therefore, the scratch concealment layer itself does not require optical transparency, but rather “opacity (concealment)” for concealing “secret information” is required.

  However, even if it is behind the reflecting surface, it becomes colored or becomes white and has a strong light scattering property, which adversely affects the clarity of the relief hologram reproduction image. In order to make the image clearer, the hologram relief surface of the scratch masking layer is set as an “optical mirror surface” (that is, the interface between the relief hologram forming layer and the scratch masking layer becomes an “optical mirror surface”).

  This is because a transparent resin material having a relatively high refractive index and a pigment having a high refractive index (a pigment having a refractive index of 2.5 or more, more preferably 3.0 or more. The refractive index exceeds 3.0. However, although the transparency is slightly reduced by mixing about 30 to 70%, a “resin layer having a high refractive index”, that is, “high refractive index”. Layer ".

  The scratch concealment layer is provided on the card base and on the “secret information” forming part on the card base so as to cover the “secret information”, and then a hologram relief is formed on the exposed surface. (Meaning to duplicate the hologram relief).

  Alternatively, a scratch concealment layer is formed so as to fill a part of the hologram relief provided on the relief hologram forming layer to form a two-layer laminate, and the two-layer laminate is then converted to “secret information on the card substrate. After the scratch concealing layer forming part covers the “secret information” on the forming part, the scratch concealing layer part is embedded in the card base, and the entire relief hologram forming layer is laminated on the card base. Can be obtained.

  Furthermore, a scratch concealment layer is once formed on the hologram relief surface of the original for hologram relief duplication, and the hologram relief surface of the scratch concealment layer is obtained with high accuracy as “the hologram relief surface of the original for hologram relief duplication”. After making it the same, the scratch concealment layer can also be obtained by transferring and forming on the card base material so as to fill the “secret information” forming portion thereon.

  The hologram relief surface has no effect on the hologram reproduction image due to the redundancy of the hologram, even if the concave and convex portions are locally filled or scraped. If a "slight shape change" or a "slight surface alteration" over a relatively wide range occurs, the sharpness of the hologram reproduction image decreases or the hologram reproduction image is distorted.

  Therefore, after forming the scratch concealing layer, the exposed surface is set as an “optical mirror surface”, and the hologram relief is formed on the exposed surface, and the ink composition of the relief hologram forming layer provided thereon is A scratch concealing layer that does not partially dissolve or swell or cause the above deformation or alteration is used.

  As the ink composition for the scratch concealment layer, for example, a resin component selected from rubber-based natural resins, diene resins, acrylic resins, and vinyl resins, in order to obtain concealability and scratch properties, What contains pigment components, such as a metal type fine powder and those oxidation fine powders, in the ratio of 20 to 80% of the whole 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 this ink composition with a solvent that does not cause partial dissolution or swelling of the base material, and further, the "secret information" forming part, or the above deformation or alteration. (Hereinafter referred to as “ink composition for scratch concealment layer”) using printing methods such as offset printing method, gravure printing method, screen printing method, intaglio printing method, inkjet printing method, etc. The thickness after drying is 5 μm to 50 μm, further 10 μm to 30 μm, on the substrate (on the “secret information” forming part), on the relief hologram forming layer, and further for hologram relief replication Form on the original.

  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, It is 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”. When the illumination light for visually recognizing the relief hologram reproduction image is illuminated, the “phase of the light” is disturbed and further becomes “scattered light”. The reproduction of the hologram itself caused by the interference of the aligned light is hindered, and the relief hologram reproduction image cannot even be confirmed.

  Such “optical mirror surface” means that the smoothness of the surface of the scratch concealing layer or the relief hologram forming layer is substantially 0.01 μm to 0.1 μm in average surface roughness Ra. "In a three-dimensional curved surface such as a hologram relief surface, the surface is an optical mirror surface" means that the curved surface does not have irregular irregularities that deviate from the desired curved surface. If it is defined as “smooth surface”, it is defined as “average surface roughness Ra in a very small surface region that is a microscopic region in the three-dimensional curved surface and can be approximated to a substantially flat surface in the region. Can be defined to be 0.01 μm to 0.1 μm in any microscopic region ”.

  Therefore, when a hologram relief is formed on the relief hologram forming layer, a duplicate surface of the relief hologram forming layer, or when a hologram relief is formed on the scratch masking layer, the replica surface of the scratch masking layer is the replica Before finishing, once finish as an "optical mirror surface" as a flat surface, then foam the resin layer, dissolve the resin layer, or dissolve the resin layer against the "optical mirror surface" A hologram relief shape can be obtained very precisely by finishing the hologram relief shape without causing unnecessary wrinkles, unnecessary dents or deformation due to the occurrence of heat shrinkage or the like.

Usually, the scratch concealment layer is formed on the forming layer on the base material (on the “secret information” forming part), on the relief hologram forming layer, or on the original plate for hologram relief duplication using the printing method as described above. Then, the outermost surface (exposed surface immediately after the formation) has a “roughness” of about 1.0 μm to 30.0 μm or more in some cases, and the “roughness” is determined by coins, fingers or nails. It is easy to grind 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, since the surface of the scratch concealing layer that is 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, the scratch concealment is formed on an appropriate peelable film. After forming the layer, using a “surface-smoothed metal plate” or the like having a smooth surface equal to or greater than the “optical mirror surface” described above, heating at 100 to 200 ° C., and 10 ⁷ to 10 ^By pressing the plate at ⁹ Pa or by pressing the plate with a roll pressure of 1.0 kg or more against a roll width of 1 cm using a “metal roll that has been subjected to surface smoothing” or the like. The surface of the scratch concealing layer that is in contact with the relief hologram forming layer is an “optical mirror surface”, and this surface is subjected to higher heating and pressurization under the same heating and pressurizing conditions, thereby producing a hologram relief. After duplicating and providing a relief hologram forming layer so as to fill the hologram relief surface and forming a two-layer laminate, the appropriate peelable film is peeled off and a predetermined position on the card base of the scratch card It is also preferable to adopt a procedure of embedding in the card substrate after the arrangement.

  At this time, before the relief hologram forming layer is provided on the scratch concealing layer, the reflective thin film layer may be provided on the hologram concealing surface of the scratch concealing layer. It is good also as a procedure which forms a reflective thin film layer after making it "mirror surface", and forms a hologram relief after that.

  Further, a scratch concealment layer is provided on the card base of the scratch card so as to cover the “secret information” provided on the base, and the exposed surface of the scratch concealment layer is set to “optical” in the same manner as described above. After that, the hologram relief-forming original plate is heated and pressed within the above-mentioned heating and pressurizing conditions to the exposed surface of the scratch concealing layer. The procedure may be to provide a hologram relief surface that forms an “optical mirror surface”. Furthermore, the hologram relief of the relief hologram forming layer that already has a hologram relief surface in the “optical mirror surface” portion of the scratch concealment layer. The surface (which may itself be an “optical mirror surface”) is pressed against the scratch concealing layer and the relief hologram under the same heating and pressing conditions. The formation layer is made into a single layer (two layers become one laminate, and the interface becomes a hologram relief surface). Finally, a flat plate pressing process is performed on the entire substrate, and a scratch concealment layer is formed. Is embedded in the base material, and the relief hologram forming layer and the card base material are integrated.

  Of course, a relief hologram forming layer (having a hologram relief surface which is an “optical mirror surface”) on an appropriate peelable film, and a scratch concealing layer provided on a part of the relief hologram forming layer are prepared, and a scratch card is prepared. The same state can be obtained by placing the “secret information” forming part on the base material of the base material so that it is covered with the scratch concealment layer and carrying out the flat plate pressing process with the base material while having the peelable film. be able to.

  Further, in the recess having a predetermined depth provided on the card base of the scratch card, the scratch concealing layer is provided at a predetermined height as described above, and the height is flush with the surface of the base. A procedure may be adopted in which a relief hologram forming layer is provided so as to cover the entire surface of the “same surface”.

  For this reason, the physical characteristics of the “hologram relief surface” or “flat surface” of the scratch concealment layer, or the “hologram relief surface” or “flat surface” of the relief hologram forming layer, are applied to such a relief. In the hologram forming layer forming step and the scratch concealing layer forming step, it is necessary to improve the surface to “a level that can be maintained as an optical mirror surface”.

  For example, when a two-component curable resin or a thermosetting resin is used for the ink composition of the scratch concealing layer or the relief hologram forming layer, when the hologram relief is formed or the “flat surface” is formed, The flat plate or roll plate itself is heated to accelerate and complete the degree of cure in the vicinity of the hologram relief surface or “flat surface”, or an ionizing radiation resin is used for the ink composition of the relief hologram forming layer. In this case, after duplication on the original plate, or after formation of the scratch concealing layer or relief hologram forming layer, further irradiation with ionizing radiation (post cure) is performed to crosslink the entire scratch concealing layer or relief hologram forming layer. The degree is 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.

  In any layer, not only the above printing method but also a roll coating method or a resist processing method is suitable for the above purpose.

  Alternatively, after the scratch concealing layer is formed on the hologram relief surface of the relief hologram forming layer or on the original plate for replicating the hologram relief with a predetermined thickness, the scratch is applied in the “drying and further curing” step. In order to sufficiently move the pigment component and the resin component in the scratch masking layer ink composition used for the masking layer, the “drying conditions and curing conditions” are 2 to 10 times the normal processing time. It is also preferable that the solidified interface itself of the scratch concealing layer can be finished as an “optical mirror surface” (pigments with small particle diameters gather near this interface, Is fully filled with the resin component.)

  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 scratch concealment layer forming layer side of the layer body is pressed against the “secret information” forming portion on the card base material, or laminated on the card base material so as to cover the “secret information” via the adhesive layer. The method is also preferable as a means for reliably obtaining an “optical mirror surface” with high accuracy.

  When the scratch concealment layer is provided so as to cover “secret information” on the card base of the scratch card, an adhesive layer may be provided between the card base (and “secret information”) and the scratch concealment layer. it can. Alternatively, an adhesive layer can be provided between the card substrate (and “secret information”) and “scratch hiding layer and relief hologram forming layer” or “scratch hiding layer and reflective thin film layer”. .

  By providing an adhesive layer, the adhesive strength between the card substrate and the “secret information” and the scratch concealing layer, the relief hologram forming layer, or the reflective thin film layer can be increased. When the formation layer is illegally peeled off, it is possible to prevent the unnecessary scratch concealment layer and relief hologram formation layer from peeling off, and to prevent alteration or modification of the “secret information”.

  In addition, after a “laminate” composed of a relief hologram forming layer and a scratch concealment layer is prepared in advance, the “laminate” is heated and applied to the card substrate and “secret information” via this adhesive layer. The press pressing process may be a procedure for fixing the scratch concealment layer portion at the same time as the embedding of the scratch concealment layer portion, and the degree of freedom of the creation procedure can be increased.

  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. Of course, when the ink composition for the adhesive layer is to be provided on the scratch concealing layer, the relief hologram forming layer, or the reflective thin film layer, these layers may be partially dissolved or swollen. Use one that does not cause deformation or alteration.

  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 also 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 part, and the peel strength at the interface with the scratch concealment layer. , 1.0 to 3.0 kg / 25 mm width is desirable. Of course, even higher peel strengths are suitable for the purposes of the present invention. In particular, the adhesive strength between the card base and the “secret information” forming portion on the card base is determined by the “secret information” on the card base and the card base for the purpose of the present invention. "It is necessary to make it large enough to make it difficult to peel off from the forming part, but it is more adhesive than the peel strength at the interface between the adhesive layer and the card base and the" secret information "forming part on the card base. The peel strength at the interface between the layer and the relief hologram forming layer is designed to be larger.

  In this way, the card base of the scratch card, the “secret information” provided thereon, the scratch concealment layer provided so as to cover the “secret information”, and further provided to cover those layers A scratch card of the present invention comprising a relief hologram forming layer is obtained.

  Alternatively, the card base of the scratch card, the “secret information” provided thereon, the adhesive layer, the scratch concealment layer, and the relief hologram forming layer (and the reflective thin film layer provided so as to cover the “secret information”). In some cases, the scratch card of the present invention is obtained.

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

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. (It means “a state where there is a gap between each region” or “a state where these regions overlap” as viewed from an observer who observes the surface vertically from above.)
The relief hologram reproduction image from the hologram relief surface at the interface between the relief hologram forming layer and the scratch concealment layer is obtained by comparing the refractive index difference between the relief hologram forming layer and the scratch concealment layer, and between the relief hologram formation layer and the card substrate. The sharpness is determined by the refractive index difference, and the relief hologram reproduction image from the hologram relief surface on the opposite surface of the relief hologram forming layer has the sharpness by the refractive index difference between the relief hologram forming layer and air. Therefore, it is necessary to control the definition of each of them according to the application of the scratch card of the present invention.

  For the purpose described above, when this relief hologram forming layer is once provided on the peelable film, a part of the surface of the peelable film (“scratch position that only authorized buyers can know” is displayed. Such as a “pattern” shape, or a bar code shape, a dot shape, or a checkered pattern shape) with an average surface roughness Ra of 1.0 μm to 30 μm or more. “Rough surface” (the relief hologram reconstructed image cannot be visually recognized from this “rough surface” portion) can be made uniform and easy to destroy when scratching, and the scratch-off can be made appropriate. Contributes to improvement.

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

  Furthermore, even when such a “rough surface” portion is introduced at the interface between the relief hologram forming layer and the scratch concealing layer, it is suitable for improving the scratching suitability and design.

  Moreover, the reflective thin film layer itself is made into a hologram relief shape by providing the reflective thin film layer in contact with the hologram relief surface of the scratch concealing layer and the hologram relief surface of the relief hologram forming layer so as to follow the hologram relief. The intensity of the reflected light from the reflective thin film layer (this reflected light includes the phase of the hologram relief) is made stronger and larger, and a clearer relief hologram reproduction image can be made to 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 relief hologram forming layer opposite to the surface on which the scratch concealing layer is formed, or the interface between the relief hologram forming layer and the scratch concealing layer, and further flush with the scratch concealing layer. In addition to improving anti-counterfeiting due to the presence of the `` background pattern '' on the card base surface, the `` background pattern '' is also scraped at the same time when it is illegally scratched. The effect of preventing forgery and alteration can be enhanced.

  Also, the design of the tint block printing is set to straddle the boundary between the scratch concealing layer and the surface of the card substrate, and when the scratch concealing layer is peeled off, the portion straddling the boundary is set to be broken. It is also preferable to improve the anti-counterfeiting property.

  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.

  Here, since the surface of the relief hologram forming layer is relatively smooth, various methods can be selected for the tint block printing on the surface, but the surface of the scratch concealment layer is a “rough” surface. Therefore, the tint block printing may be performed using 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 method. 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.

  It is also preferable to make the design of the tint block printing and the formation position the same on the upper and lower sides of the relief hologram forming layer in order to enhance the unexpectedness and the anti-counterfeiting property.

  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. Moreover, since this “peeling trace” is generated at the interface between the relief hologram forming layer and the scratch concealing layer, it can be clearly discriminated through the relief hologram forming layer. Since there is no means for repairing, the forgery prevention property is 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 similarly deformed, and one surface of the scratch concealment layer adheres to the card substrate and deforms. Since the deformation pressure is concentrated on the other surface of the scratch concealing layer, the above-mentioned plastic deformation is increased, irregular irregularities on the other surface of the scratch concealing layer, Irregular tears are generated, and the irregular irregularities and the 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.

  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.)
Further, in a region other than the region where the scratch concealing layer of the relief hologram forming layer is laminated, the adhesive strength between the relief hologram forming layer and the card substrate changes in a “predetermined pattern” (for example, the material of the laminated layer is changed). Or “a weakly laminated portion” and a strength ratio of 2/1 to 5/1.) Or “of the scratch concealing layer”. In areas other than the “confidential information” forming part, the scratch concealment layer is partially formed as a layer that is difficult to scratch, for example, in a letter form, that is, the scratch concealment layer in a letter form such as “illegal” or “disclosure” This is used as a restraint to the act of trying to scratch off the relief hologram forming layer or to scratch off the scratch concealment layer from corner to corner. It is also preferred.

  In this case, for example, the scratch concealment layer has a two-layer structure of an upper layer and a lower layer, and when the lower layer of the scratch concealment layer is provided, it is fixed to the card base surface of the scratch card in advance, and depending on the nail or the like Using a resin layer that has a strength (hardness) that cannot be peeled off, print a "character pattern". Except for this pattern part, provide a lower layer of a normal scratch concealment layer, and cover them all. It is necessary to devise such as providing an upper layer of the scratch concealing layer.

  When the scratch card of the present invention obtained in this way was observed from its appearance, it was impossible to visually recognize the “secret information” covered with the relief hologram forming layer and the scratch concealment layer. By partially scraping the relief hologram forming layer and the scratch concealing layer of the scratch card with a coin, it was possible to visually recognize the “secret information” from the scraped area.

  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 you try to expose the cross section of the scratch masking layer somehow, `` peeling marks '' will occur on the surface of the scratch masking layer, leaving the scratch masking layer in its original state without leaving any traces that tried to act illegally, It seemed difficult to try to modify the scratch card.

  Furthermore, when the scratch concealment layer of the scratch card of the present invention is partially scratched off without knowing the position of the “secret information” forming portion therebelow, “secret information” does not appear in that area. It was obvious that all scratch masking layers were peeled off, and 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”.

  According to the present invention, the scratch concealment layer is embedded in the card base, and the hologram layer is provided so as to cover the entire surface of one side of the card base including the embedded portion. Since it has a structure that prevents alteration such as careful peeling, and a clear hologram reproduction image can be visually recognized by reflected light from the interface between the hologram layer and the scratch concealment layer, it is difficult to forge it. The scratch card can be provided.

  In particular, according to the present invention, the interface between the hologram layer and the scratch concealment layer is an “optical mirror surface”, and the scratch concealment layer is a “high refractive index layer”, so that the clarity of the hologram reproduction image is improved. It is very difficult to counterfeit this, and furthermore, when a card with a different average particle diameter is arranged in the scratch concealment layer and the card is bent for an illegal purpose, the peeling mark is removed. As a structure that can no longer be repaired, it is possible to provide a scratch card that can remarkably enhance its anti-counterfeiting property.

  Therefore, the present invention makes it possible to provide a new scratch card that is extremely difficult to counterfeit or alter, and prove that the card holder has a legitimate right in the tertiary industry, This is useful not only for applications such as “scratch lottery”, but also for applications that play the role of so-called “keys” in systems that provide high-priced products and services.

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. A scratch concealment layer 3 (“rectangular” in the figure) is formed at a predetermined position of the card base 1 of the scratch card 9 of the present invention so as to cover the “secret information” 2, and the card base 1 is a diagram in which a hologram relief 4 and a relief hologram forming layer 5 are formed on the entire surface of the card base 1 so as to be embedded in the “surface” 1 and to cover the scratch concealment layer 3. (In the drawing, the unevenness of the hologram relief 4 is not shown.) Here, (a) is a view of the scratch card 9 as viewed from above, and (b) is an AA cross-sectional view thereof. The figure which printed "secret information: 12345678" 2 on the card | curd base material 1 of the scratch card 9 (The frame surrounding "secret information" is described only for convenience.) An adhesive layer 7, a scratch hiding layer 3, a hologram relief 4, a relief hologram forming layer 5, and a reflective thin film layer 6 are formed at predetermined positions on the card substrate 1 so as to cover the “secret information” 2. The adhesive layer 7 and the scratch concealing layer 3 are embedded in the card substrate 1 (“rectangular” in the drawing), and the scratch card 9 of the present invention has a position corresponding to the scratch concealing layer 3 (the uppermost layer). FIG. 9 is a diagram in which a background pattern printing 8 is further provided. (In the figure, only the tint block print 8 is highlighted and shown.)

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 base 1 used in the scratch cards H1 to H3 and 9 of the present invention, a “secret information” 2 display section can be provided, and at least the scratch concealment layer 3 is embedded in the card base 1. Any material that can be used, that is, a plastic material, a metal material, a ceramic material, a biomaterial, a composite material thereof, or a multi-layer structure or a more complicated combination thereof is used. be able to. In addition, an appropriate display by means such as printing according to the use of the scratch cards H1 to H3 and 9 of the present invention may be provided on the front and back surfaces. (See FIGS. 1 to 6. In FIGS. 4 to 6, “☆ scratch card ☆” or the like is printed on the surface of the card substrate 1. This “print design” is applied to the relief hologram forming layer 5. Alternatively, the “print design” may be recorded on the relief hologram forming layer 5 as a “hologram design” for recording on the relief hologram forming layer 5.
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 1 is concealed by the scratch concealment layer 3, but the card base is provided from the side where the scratch concealment layer 3 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” and “position and shape of the scratch concealment layer 3”, as a property of the card substrate 1, these “light rays” can be “shielded” or “ Reflection " Or, it is possible to adopt the one that held the property of "scattering".

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 suitable” (adhesive layer 7, scratch concealing layer 3, or laminate thereof can be stably embedded in the card substrate 1, and the outermost surface of the scratch concealing layer 3 and the card And “general versatility” (including versatility of processing. This “general versatility of processing” means “protective layer / magnetic”. It means that a manufacturing line and manufacturing conditions such as embedding a magnetic stripe consisting of “layer / adhesive layer” in a card base material, or using a card base material as a laminate, etc.) have been established. The “card base material and shape used as“ plastic card ”defined in the 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 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.

And at least the scratch concealing layer 3 is 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 / square meter). Preferably, a material that can be embedded “on the same surface” under a condition of 10 ⁶ Pa to 10 ⁸ Pa is used.

  The thickness of the card base 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 the proper processing and handling as the scratch cards H1 to H3. Is desirable.

If the thickness is less than 3.0 μm, the processing efficiency in providing the scratch concealing layer 3 or the relief hologram forming layer 5 on the card substrate 1 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. 1-6.)
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.

As a card substrate 1, a 100 μm soft vinyl chloride sheet is used and a 25 μm-thick scratch concealment layer 3 (a strip shape having a width of 10 mm. The thickness of the card substrate 1 is about ¼ of the thickness). Heating and cooling cycle of “normal temperature → heating → 150 ° C. → cooling → normal temperature” by sandwiching with a stainless steel plate with a mirror finish of 3 mm thickness at a heating of 150 ° C. and a pressure of 10 ⁶ Pa (1 When the cycle is 30 minutes to 90 minutes), the scratch concealment layer 3 is entirely embedded in the card substrate 1, and the outermost surface of the scratch concealment layer 3 and the surface of the card substrate 1 are flush with each other. It was.

  Under the same conditions, the scratch concealment layer 3 having a thickness of 5 μm to 50 μm can be “same” with respect to the thickness of the card substrate 1 of 100 μm, but the scratch concealment layer 3 having a thickness exceeding 50 μm. In contrast, the step at the boundary exceeds 1.0 μm, and it is necessary to set the conditions at a higher temperature and a higher pressure in order to be “level”.

  However, setting the above conditions to more severe conditions causes large deformation and alteration of the card base 1, and is unsuitable for use as a scratch card 9. The “embedding 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 it means “embedded piece (embedded target layer or target object). In the case where the entire “small piece” is uniformly embedded depending on the size of “the strip-shaped material etc.” (the thickness of the card substrate 1 including the “small piece” is a portion where the “small piece” exists, The same in other locations), or when the embedding amount of the “small piece” is biased (the embedding amount in the center of the “small piece” relative to the end of the “small piece” (the portion close to the boundary) In addition, the case where the material of the card substrate 1 flows so as to cover the cross section of the “small piece” is included, and as a result, the “small piece” is embedded flush. It means becoming in a state.

  On the outermost surfaces of the card substrate 1 and the scratch concealment layer 3 that are “same”, the hologram relief 4 is “the entire surface of the card substrate 1” or “a card including at least the scratch concealment layer 3”. The relief hologram forming layer 5 is formed so as to cover the hologram formation 4 formed on a “partial region of the substrate 1”, or the hologram relief is previously formed on the outermost surfaces of the card substrate 1 and the scratch concealment layer 3. 4 is laminated on the “entire surface of the card substrate 1” or “a partial region of the card substrate 1 including at least the scratch concealing layer 3”. At this time, instead of “the relief hologram forming layer 5 provided with the hologram relief 4 in advance”, “the hologram relief 4 is provided in advance, and the reflective thin film layer 6 is provided so as to cover the hologram relief 4. Of course, the relief hologram forming layer 5 "may be used.

  Furthermore, darely changing from the “flat” state to the “depressed state” is effective in improving the anti-counterfeiting property and improving the convenience of the scratch card 9. The two-layer laminate of “peelable peelable film (10 μm) / scratch concealing layer 3 (15 μm)” is embedded in the card substrate 1 under the same conditions, and the peelable film is peeled off, whereby the scratch concealing layer 3 The outermost surface can be recessed by 10 μm from the surface of the card substrate 1.

  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 3, it is left until the relief hologram forming layer 5 is provided on the scratch concealment layer 5 during the manufacturing process. 3 can prevent occurrence of dirt and scratches on the outermost surface.

  As described above, when the relief hologram forming layer 5 is laminated so as to cover the entire surface of the card substrate 1, this recess becomes a recess of the relief hologram forming layer 5, and such a recess is scratched. The card 9 can be observed even when the card 9 is seen, and can be used as a means for suggesting a scratch location when the authorized purchaser scratches.

Furthermore, it is also suitable to camouflage the “true” position of the “secret information” 2 forming portion by providing such a dent at other locations on the card base 1 surface. (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 H3 and 9 of the present invention includes a character, a figure, a symbol, a pattern, a mark, a shape, a solid, or a combination thereof, or a combination of these and a color. 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. 1-6.)
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.

  Further, only those who manage the operation of the scratch cards H1 to H3 and 9 by including hidden information or encryption information that cannot be discriminated by simple information reading means such as visual observation 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 H3 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 H3 and 9 and the issuers of the scratch cards H1 to H3 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 H3 and 9, not only the above-mentioned numbers, but also characters, figures, marks, etc., individuals and suppliers of the scratch cards H1 to H3 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 H3 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. 1-6.)
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 5 is provided on the card base 1 so as to cover the “secret information” 2 forming part. (See FIGS. 1-4)
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.
(Scratch hiding layer)
The “secret information” 2 forming portion is provided on the card base 1 of the scratch cards H1 to H3 and 9 of the present invention, and the scratch concealment layer 3 is provided on the card base 1 so as to cover the “secret information” 2 forming portion. It is provided on the material 1 and the scratch concealing layer 3 is embedded in the card substrate 1 so that the outermost surface thereof is “same” with the surface of the card substrate 1. (See FIGS. 1-4)
At this time, it is also preferable that the outermost surface of the scratch concealment layer 3 is recessed by a predetermined depth from the outermost surface of the card substrate 1. (Not shown)
As the ink composition used for the scratch concealment layer 3 of the scratch cards H1 to H3 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 as long as the scratch-off property is satisfied to prevent unnecessary peeling or peeling of the surface of the scratch concealment layer 3 due to rubbing or the like. (See FIGS. 1-4)
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 3 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 3, in order to provide concealability and scratch properties to the entire solid content including these resin components, a metal 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.

  Further, in order to further improve the concealing property of the scratch concealing layer 3, 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 concealing layer 3 from the above composition, both the printability and the scratch property can be satisfied.

The scratch concealment layer 3 is obtained by diluting this composition with an appropriate solvent, on the card substrate 1 so as to cover the “secret information” 2 formation part, an offset printing method, a gravure printing method, a screen printing method, Using a printing method such as an intaglio printing method or an inkjet printing method, the thickness after drying is 5 μm to 50 μm, and further, a thickness of 10 μm to 30 μm. (See FIGS. 1-4)
Furthermore, as the ink composition for the scratch concealment layer 3, 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, and in particular, on the relief hologram forming layer 5 When the scratch concealing layer 3 is provided, it is preferable because the surface of the relief hologram forming layer 5 is not subjected to unnecessary deformation or alteration.

  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 3 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 3 is obtained by dissolving a brittle resin that easily cohesively breaks in the solvent in a solvent, and aluminum pigment (silver), brass powder (gold), copper as a concealable pigment. 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 the scratch masking layer 3, organic pigments such as quinacridone red magenta, anthraquinone red yellow, polyazo yellow, benzimidazolone yellow orange, and 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.

  Of course, the ink composition for the scratch concealment layer 3 is selected in consideration of the adhesiveness between the card substrate 1 and the “secret information” 2 forming portion provided on the card substrate 1.

  Further, since the “extruding portion” of the “secret information” 2 forming portion of the scratch concealment layer 3 does not need to have a proper scratch-off property, the scratch concealment of the scratch concealment layer 3 is firmly adhered to the card substrate 1. In this case, it may be designed as a portion remaining on the card substrate 1.

  Then, the remaining part of the fixed portion is replaced with “predetermined pattern”, that is, “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 3 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 3 is divided into two stages. In the ink composition for scratch concealment layer 3 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 3 is covered by the remaining thickness so as to cover the “predetermined pattern” portion (fill the other portion). A method of adding objects may be used.

The conditions for embedding at least the scratch concealment layer 3 in the card substrate 1 at least “on the same plane” are the heating temperature of 60 ° C. to 200 ° C., preferably 80 ° C. to 150 ° C., and the press pressure of 10 ^4. Pa to ^{10 10} Pa (N / square meter), preferably 10 ⁶ Pa to 10 ⁸ Pa.

  Further, by making the scratch concealment layer 3 “resin layer having a high refractive index”, that is, “high refractive index layer”, the reflectance at the interface between the scratch concealment layer 3 and the relief hologram forming layer 5 is increased, This interface, that is, a relief hologram reproduction image reproduced from the hologram relief 4 can be made brighter and clearer.

  In the ink composition for the scratch concealment layer 3, using the resin and pigment described above, while maintaining its “scratch off suitability”, a resin having a relatively high refractive index is substituted as the resin component, In addition, a pigment having an extremely high refractive index of 2.5 or more, further including 3.0 or more, including a complex refractive index, is added in an amount of about 30 to 70%, so that transparency is slightly increased. Although it decreases, a “resin layer having a high refractive index”, that is, a “high refractive index layer” can be formed.

  Such resins having a high refractive index include acrylic resins, polyester resins, polyurethane resins, vinyl chloride resins, vinyl acetate resins, vinyl chloride-vinyl acetate copolymer resins, polyamide resins, and melamine resins. And phenol resin.

  The refractive index of the resin used is an acrylic ester resin (refractive index n = 1.47), an acrylamide resin (n = 1.50), a nitrocellulose resin (n = 1.54), or a vinyl acetate resin. (N = 1.47), polystyrene resin (n = 1.60) or the like, and as the 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), phenol resin (n = 1.60), etc. It is.

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

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

  As a resin material having a high refractive index n of 1.7 to 2.3, a resin structure having a relatively high refractive index, a “sulfur atom” having a high atomic refractive index, A method of introducing a “halogen component” such as a chlorine atom or a fluorine atom, or an “aromatic ring group” having a high refractive index structure at a molecular level, and a predetermined metal in the molecular structure of the polymer material Some have found a material having a refractive index of n = 1.9 or more depending on a method of incorporating a salt.

Examples of the pigment having a high refractive index include a complex refractive index, for example, titanium dioxide (rutile) (n = 2.62 to 2.90), hematite (n = 2.94), zinc (complex refraction). Rate n = 2.4-5.5i), lead titanate (n = 2.7), zinc telluride (n = 2.92), chromium oxide (n = 2.5), cadmium sulfide (cadmium red: n = 2.6), tungsten (complex refractive index n = 2.76-1.0i), iron (n = 2.36), ferric oxide (n = 3.0), ferric trioxide ( n = 3.1), copper oxide (2.71), antimony (complex refractive index n = 3.2-5.0i), nickel (complex refractive index n = 1.8-3.6i), platinum (complex Refractive index n = 2.9-4.5i) or the like can be used.
(Relief hologram forming layer and hologram relief)
The “secret information” 2 forming portion is provided on the card base 1 of the scratch cards H1 to H3 and 9 of the present invention, and the “secret information” 2 forming portion is covered so as to cover the embedded scratch concealment layer 3. In addition, the relief hologram forming layer 5 is provided on the entire surface of the card substrate 1 or on a part thereof. (See FIGS. 1 to 4. In the figure, only the case where the card base 1 is provided on the entire surface is displayed.)
At this time, the hologram relief 4 is provided in advance on the surface of the scratch concealment layer 3 or the surface of the card substrate 1, and the procedure of providing the relief hologram forming layer 5 so as to cover the hologram relief 4, A procedure for laminating the relief hologram forming layer 5 provided with the hologram relief 4 on the card substrate 1 and the scratch concealing layer 3, and further, the relief concealing layer 3 is formed in advance after the hologram relief 4 is formed. 5 is partially formed so as to cover and fill a part of the hologram relief 4, and the side of the relief hologram forming layer 5 on which the scratch concealing layer 3 and the hologram relief 4 are provided is connected to the “secret” of the card substrate 1. The “secret information” 2 forming unit is in contact with a certain side of the “information” 2 forming unit, and the position of the “secret information” 2 forming unit and its scrap After the masking layer 3 is superposed to face the laminate ( "integrated", i.e., meaning that the laminate.) To be provided by the steps or the like. (See FIGS. 1 to 4. In FIG. 4, the unevenness of the hologram relief 4 is not displayed.)
As the resin material used for the transparent resin layer for constituting the relief hologram forming layer 5 of the scratch cards H1 to H3 and 9 of the present invention, various thermoplastic resins, thermosetting resins, or ionizing radiation curable resins Can be used.

  In particular, thermosetting resins and ionizing radiation curable resins that are not easily deformed and have excellent heat resistance under the conditions such as laminating on the card base 1 described above are 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. 1-4)
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 5 using the above resin material, the relief hologram forming layer 5 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. 1-4)
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 into a pattern by a similar method can also be used as the light diffraction structure (that is, the hologram relief 4 of the relief hologram forming layer 5).

  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 called 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), and on the relief hologram forming layer 5. 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 5 is pressed along this duplication cylinder, and duplication is carried out at the above pressure with a metal cylinder from the back side. In order to minimize distortion and deformation such as thermal shrinkage after replication, the entire relief hologram forming layer 5 is not heated, but only a portion of the relief hologram forming layer 5 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.

On these relief hologram forming layer 5 and / or scratch concealment layer 3, offset printing or gravure printing is performed by a print design or hologram design according to the use of scratch cards H1 to H3 and 9 of the present invention. The tint block printing 8 is performed with a thickness of 1.0 to 10.0 μm. (Refer to FIG. 6. A geometrical pattern print 8 is applied on the relief hologram forming layer 5.)
Needless to say, the design of the relief hologram forming layer 5 and / or the scratch concealment layer 3 can be improved by printing a normal design (main design pattern or the like) other than the tint block printing 8.

Further, on the relief hologram forming layer 5 or on the relief hologram forming layer 5 and the tint block printing 8, a cellulose resin, a polyester resin, a vinyl resin, an epoxy resin, an acrylic resin, and a combination of these A protective layer such as coalescence or ionizing radiation curable resin may be formed to a thickness of 1 to 3 μm by a thermal melting transfer method, a sublimation transfer method, or an ink jet method to further enhance the concealment of “secret information” 2. . (Not shown)
However, when a part of the surface of the relief hologram forming layer 5 is a portion where a “rough” surface is intentionally provided as described above, an ink jet method capable of printing following this unevenness, The copy-forgery-inhibited pattern printing 8 may be performed using a thermal transfer system that is not easily affected by unevenness or a sublimation transfer system. Further, by using such a thermal transfer method or a sublimation transfer method, printing can be performed only on the convex and concave portions of the unevenness, and the tint block print 8 can be destroyed very easily by an unauthorized scratch. .

  In particular, the sublimation transfer method can penetrate into the resin layer constituting the relief hologram forming layer 5 and create a unique texture.

The tint block printing 8 is also provided between the scratch concealing layer 3 and the relief hologram forming layer 5 (in this case, the tint block printing 8 is provided on the hologram relief 4 of the scratch concealing layer 3 and the relief is formed thereon. Before the hologram forming layer 5 is provided or the hologram relief 4 is formed on the scratch concealing layer 3, the tint block printing 8 is provided on the scratch concealing layer 3, and then the scratch concealing layer 3 and the tint block printing 8 are formed thereon. It is a procedure such as forming the hologram reliefs 4 on both sides.) It is also surprising that the design and the formation position of the relief relief forming layer 5 may be different or the same on the upper and lower sides of the relief hologram forming layer 5. And for increasing the anti-counterfeiting property. (Not shown)
(Reflective thin film layer)
The reflective thin film layer 6 can be formed so as to contact and follow the hologram relief 4 of the scratch card H2 of the present invention. The reflective thin film layer 6 is not particularly limited as long as it is a thin film layer having a higher refractive index than the relief hologram forming layer 5 because it is necessary to reflect incident light. (See Figure 2.)
Alternatively, after providing the hologram relief 4 on the surface of the card substrate 1 and the scratch concealment layer 3 embedded in the card substrate 1, the reflective thin film layer 6 is formed so as to follow the hologram relief 4. You can also. (Not shown)
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 5, 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, examples of the thin film layer having a higher refractive index than the relief hologram forming layer 5 include ZnS, TiO ₂ , Al ₂ O ₃ , Sb ₂ S ₃ , SiO, SnO ₂ , and 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 5. 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)
As the adhesive layer 7 used in the scratch card H3 of the present invention, any of conventionally known solvent-based and water-based adhesives such as vinyl acetate resin, acrylic resin, vinyl acetate-acrylic copolymer, vinyl acetate-vinyl chloride Examples thereof include polymers, ethylene-vinyl acetate copolymers, polyurethane resins, and rubber resins such as natural rubber and chloroprene rubber. Natural latex such as natural rubber latex, natural rubber latex obtained by graft polymerization of natural rubber with styrene, especially methacrylic acid methyl, in particular, to make natural material composition You may use what was produced from the raw material. (See Figure 3.)
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 (cyclohexane, etc.), esters (ethyl acetate, butyl acetate, isobutyl acetate, propylene glycol monomethyl ether acetate, cellosolve acetate, ethyl-3-ethoxypropionate, etc.), 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. 1-4)
Alternatively, before embedding the scratch concealment layer 3 on the card base material 1, the adhesive layer 7 is provided on the card base material 1 side of the scratch concealment layer 3 and is embedded in the card base material 1 together with the scratch concealment layer 3. Furthermore, it includes the exposed surface of the scratch concealment layer 3 provided so as to fill a part of the hologram relief 4 of the relief hologram forming layer 5 (the reflective thin film layer 6 may be provided on the hologram relief 4). Then, the adhesive layer 7 is provided on the entire relief hologram forming layer 5 or a part thereof, and the scratch concealing layer 3 is embedded in the card substrate 1 and at the same time, the relief hologram forming layer 5 and the card substrate 1 are integrated. In the steps of converting, the same formation method can be used to obtain the same thickness.

  The adhesive strength of the adhesive layer 7 is the peel strength at the interface between the card substrate 1 and the “secret information” 2 and the adhesive layer 7, and at least the peel at the interface between the scratch concealment layer 3 and the adhesive layer 7. The strength is preferably in the range of 1.0 to 3.0 kg / 25 mm width in the peeling method at 180 ° in accordance with JIS Z0237. 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 purpose of the present invention, and the card base 1 and the card of the scratch cards H1 to H3 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 scratch concealment layer 3 is designed to be greater than the peel strength at the interface with the forming portion.

  To the adhesive layer 7, a fine particle transparent pigment or an ultrafine particle pigment can be added for the purpose of adjusting its adhesive strength, its hardness (meaning fastness as a layer) and heat resistance.

  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.

  As a specific example, when ultrafine titanium oxide (Ishihara Sangyo Co., Ltd. TTO-55N: refractive index n = 2.4) is dispersed in an appropriate resin, the refractive index is 1.9 to 2.0. In addition, when ultrafine zirconium oxide (average particle diameter 0.0001 μm to 0.05 μm in dynamic light scattering method) is dispersed in an appropriate resin, the refractive index as “layer” is 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.

  Thus, if the adhesive layer 7 also has a high refractive index, the reflectance at the interface where the adhesive layer 7 and the relief hologram forming layer 5 are in direct contact with each other through the hologram relief 4 can be increased. This is preferable because a hologram reproduction image reproduced from this interface can be made clearer.

When the scratch cards H1 to H3 and 9 of the present invention thus formed were observed under ordinary illumination light, it was determined that they were “scratch cards with holograms”. The “secret information” 2 that is estimated to be hidden under the sash was not visible at all. (See FIGS. 1-4)
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. 5. In FIG. 5, a frame indicating the predetermined position is for convenience. The embedded scratch concealment layer 3 and relief hologram forming layer 5 are provided so as to cover the “secret information” 2. (See FIGS. 1-4)
Further, a tint block print 8 made of a geometric pattern was applied on the relief hologram forming layer 5 of the scratch card 9 of the present invention. (See Figure 6.)
In any case, the “secret information” 2 covered with the relief hologram forming layer 5 and the scratch concealment layer 3 cannot be visually confirmed, and the scratch concealment layer 3 is not attached to the card substrate 1. Since it was embedded inside, it seemed impossible to peel off this layer cleanly without breaking with a nail or the like.

  Then, the relief hologram forming layer 5 and the scratch concealing layer 3 of the scratch cards H1 to H3 and 9 of the present invention, or the copy-forgery-inhibited pattern printing 8, the relief hologram forming layer 5 and the scratch concealing layer 3 are partially formed using coins. When scraped off, the “secret information” 2 hidden under the scraped area could be visually recognized, but at the same time, it is very difficult to forge such scratch cards H1 to H3 and 9. It seemed.

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. 4. The lamination state of the card base 1 is not shown.)
A number “12345678” (4 mm height, 2 mm width, 1 mm character spacing) was printed as “secret information” 2 in a predetermined area of the card base 1 using an inkjet printer. (See FIG. 1 and FIG. 7.)
An ink composition for scratch concealment layer 3 having the following composition is formed by a stainless screen printing method so as to cover the “secret information” 2 at a predetermined position on the card substrate 1, and after drying As a thickness, a laminate in which the scratch concealment layer 3 is formed to a thickness of 15 μm is sandwiched between stainless steel plates having a mirror-finished surface, and subjected to heating, pressurization, and cooling treatment at 120 ° C., 106 Pa, and 60 minutes. Thus, the outermost surface of the scratch concealment layer 3 and the surface of the card substrate 1 were “equal”. (See FIG. 1. FIG. 1 shows a state in which the hologram relief 4 has already been formed.)
<Ink composition for scratch concealment layer 3>
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 Here A Ni original plate having a highly designed hologram (relief hologram) photographed using a laser optical system is prepared, and the relief of the Ni original plate is provided on the surface of the card substrate 1 in which the scratch concealing layer 3 is embedded. Combine the surfaces, with a rotary relief hologram forming apparatus (original cylinder diameter 1.0 m, original surface temperature 100 ° C., pressurized cylinder diameter 0.3 m, water-cooled, pressure 2000 kg / m, replication speed 10 m / min), Hologram relief 4 (relief shape of Ni original) Including a scratch concealing layer 3 above, it was formed on the whole of the card substrate 1 of the surface ( "entire surface" in the one surface of the card substrate 1). (See Figure 1)
Next, an ink composition for a relief hologram forming layer 5 having the following composition is formed on the entire surface of the card substrate 1 by a stainless screen printing method so as to fill the hologram relief 4 on the card substrate 1. As a thickness after drying, the relief hologram forming layer 5 was formed to a thickness of 5.0 μm, and the scratch card H1 or 9 of Example 1 was obtained. (See FIGS. 1 and 4)
<Ink composition for relief hologram forming layer 5>
Melamine resin 30 parts Toluene 10 parts Methyl alcohol 10 parts Isopropyl alcohol 20 parts Ethyl cellosolve 20 parts Butyl cellosolve 10 parts
When the scratch card H1 or 9 of Example 1 was observed under a normal fluorescent lamp, “a relief hologram reproduction image having a high design property and embedded over the entire card surface was embedded on the scratch card H1 or 9. It was only possible to observe the “silver printed layer”, and it was impossible to know the existence of the “secret information” 2 formed thereunder. (See FIGS. 1 and 4)
Next, the “embedded silver print layer on which a high-design relief hologram reproduction image can be observed” is scratched with a coin on the scratch card H1 or 9 (“relief hologram forming layer 5, hologram relief 4 and scratch concealment”). A part of the area where the layer 3 ”is laminated is removed by scratching), the relief hologram forming layer 5 and the scratch concealment layer 3 are partially scraped, and a part of the“ secret information ”2 is removed from the scraped part. It was considered difficult to counterfeit this scratch card H1 or 9 containing such an embedded special print layer. (Not shown)
(Example 2)
In Example 1, the scratch concealment layer 3 was once formed on a suitable peelable film (surface release-treated polyethylene terephthalate film having a thickness of 38 μm), and the exposed surface and the peelable film were 3 mm thick. Sandwiched between two stainless steel plates (resin-coated on the surface and finished to an “optical mirror surface” with an average surface roughness Ra of 0.1 μm), and 200 ° C. from both sides A flat plate pressing process is performed to pressurize at 10 ⁹ Pa so that the exposed surface of the scratch masking layer 3 is an “optical mirror surface”, and a rotary relief hologram forming apparatus (original plate) is applied to the exposed surface. Hologram relief 4 (Ni original plate) with cylinder diameter of 1.0 m, original plate surface temperature of 150 ° C., pressurized cylinder diameter of 0.3 m, water-cooled type, pressure of 10,000 kg / m, replication speed of 2.0 m / min) And the scratch concealing layer 3 provided with the hologram relief 4 is peeled from the appropriate peelable film and temporarily bonded to a predetermined position of the card substrate 1. Is sandwiched between a stainless steel plate having a mirror-finished surface and subjected to heating, pressurizing, and cooling treatment at 120 ° C., 106 Pa, and 60 minutes, and the highest portion of the hologram relief 4 of the scratch concealing layer 3 and the card substrate. The surface of FIG. 1 is “same” (see FIG. 1. In FIG. 1, the hologram relief 4 is not formed on the entire surface of the card substrate 1 but only on the surface of the scratch concealment layer 3). .

Other than that was carried out similarly to Example 1, and obtained the scratch card | curd H1 of Example 2, or 9. (See FIG. 1 and FIG. 4. In FIG. 1, the hologram relief 4 is formed only on the surface of the scratch concealment layer 3).
When this scratch card H1 or 9 was evaluated in the same manner as in Example 1, the relief hologram reproduction image “hologram with high designability” by the hologram relief 4 on the scratch concealment layer 3 can be observed more clearly (FIG. Not shown.), And good results similar to Example 1 were obtained except that it was more difficult to counterfeit this sheet.

(Example 3)
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 3 was obtained in the same manner as in Example 1 except that the relief hologram forming layer 5 was provided thereon. (See FIG. 2 and FIG. 4. In FIG. 4, the layer covering “secret information” 2 is not “3 and 4 to 5”, but “3 and 4 to 6”.)
When this scratch card H2 or 9 was evaluated in the same manner as in Example 1, the relief hologram reproduction image “highly designed hologram” by the hologram relief 4 of the relief hologram forming layer 5 can be observed more clearly (not shown). ), And forged this sheet, good results similar to Example 1 were obtained except that it seemed more difficult.

Example 4
On the surface opposite to the surface in contact with the scratch concealment layer 3 of the relief hologram forming layer 5 of Example 1 (the surface on which the relief hologram forming layer 5 is exposed), a geometric pattern is formed by a sublimation transfer printer. A scratch card H1 or 9 of Example 4 was obtained in the same manner as Example 1 except that yellow tint block printing 8 was performed. (See FIG. 1, FIG. 4 and FIG. 6. In FIG. 1, the tint block printing 8 is not shown. In FIG. 4, the layer covering the “secret information” 2 is not “3 and 4-5” but “3”. 4-5, and 8 ".) At this time, the printing portion of the sublimation transfer printer, that is, the portion of the tint block printing 8 penetrates into the relief hologram forming layer 5, and the outermost surface of the relief hologram forming layer 5 And the surface of the tint block printing 8 forms the same surface.

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 coins, the tint block print 8 and relief hologram formation The same good results as in Example 1 were obtained except that the layer 5 and the scratch concealment layer 3 were scraped at the same time, and it was considered that the scratch card H1 or 9 was more difficult to forge. (Not shown)
(Example 5)
In Example 1, an ink composition for scratch concealment layer 3 having the following composition was used for scratch concealment layer 3 to be a “high refractive index layer”, and ink for relief hologram formation layer 5 having the following composition was used for relief hologram formation layer 5. Except having formed using the composition, it carried out similarly to Example 1, and obtained the scratch card | curd H1 or 9 of Example 5. (See FIGS. 1 and 4)
<Ink composition for scratch concealment layer 3: refractive index n = 2.50>
Urethane resin (refractive index n = 1.63) 5 parts ultrafine zirconium oxide (average particle size: 0.001 μm, refractive index n = 2.30)
30 parts Pigment non-leafing aluminum paste Aluminum fine powder (n = 3.50) 15 parts Toluene 5 parts Isopropyl alcohol 15 parts Butyl cellosolve 25 parts <Ink composition for relief hologram forming layer 5>
Polybutyl acrylate (n = 1.44) 30 parts Toluene 10 parts Methyl alcohol 10 parts Isopropyl alcohol 20 parts Ethyl cellosolve 20 parts The scratch card H1 or 9 of Example 5 was evaluated in the same manner as in Example 1. However, a relief hologram reproduction image “hologram with high designability” by the hologram relief 4 of the scratch concealment layer 3 can be observed more clearly, except that it was more difficult to forge the scratch card H1 or 9. The same good results as in Example 1 were obtained. (Not shown)
(Example 6)
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, the adhesive layer 7 was formed to a thickness of 3.0 μm (see FIG. 3), and the scratch concealing layer 3 was provided thereon. Card H3 or 9 was obtained. (See FIG. 3 and FIG. 4. In FIG. 4, the layer covering “secret information” 2 is not “3 and 4 to 5”, but “3, 4 to 5 and 7”.)
When this scratch card H3 or 9 was evaluated in the same manner as in Example 1, the scratch concealment layer 3 was firmly fixed to the card base 1 or more with the adhesive layer 7, and the forgery of the scratch card H3 or 9 was prevented. Good results similar to those of Example 1 were obtained except that the reliability as a card was considered to be high. (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 7)
In Example 1, using the ink composition for scratch concealment layer 3 having the following composition, the same procedure as in Example 1 was carried out except that the scratch concealment layer 3 was formed in the same manner and with the same thickness. The scratch card H1 or 9 of Example 7 was obtained. (See FIGS. 1 and 4)
<Ink composition for scratch concealment layer 3>
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 part This scratch card H1 or 9 is evaluated in the same manner as in Example 1, and the scratch concealment layer 3 is tried to peel off the “entire layer” and the card substrate 1 is close to 90 degrees. When bent, in addition to the same good results as in Example 1, wrinkles in the form of “peeling marks” occurred in the scratch concealment layer 3 where no scratch-off occurred, and the wrinkles flattened the card substrate 1 again. Even if it returns to a proper state, it does not disappear (on the contrary, a part of the wrinkle is generated up to a tear) and it has been fixed. Et al., Except that the forgery of the scratch card H1 or 9, appeared to be very difficult to obtain good results same as in Example 1. (Not shown)
(Comparative example)
Example 1 is the same as Example 1 except that the hologram relief 4 and the relief hologram forming layer 5 are not provided, and the scratch concealing layer 3 is not embedded in the card substrate 1 and a scratch card is formed. Similarly, a scratch card of a comparative example was obtained.

  When this scratch card was evaluated in the same manner as in Example 1, it was possible to visually recognize the “secret information” 2 by scratching off, but the scratch concealment layer 3 protruding on the card base 1 was nail in the cross section. It was estimated that the “entire layer” could be peeled off and there was no hologram reproduction image, so it was presumed that this scratch card could be easily forged or altered.

H1 to H3, 9 Scratch card 1 Card base 2 “Secret information” (“12345678” is formed as “secret information” 2 and is schematically shown)
3 Scratch concealment layer 4 Hologram relief 5 Relief hologram forming layer 6 Reflective thin film layer 7 Adhesive layer 8 Copy-forgery-inhibited pattern printing

Claims (4)

A scratch card that conceals confidential information provided on one surface of a card substrate,
A scratch concealment layer is provided on a part of the surface of the card base so as to cover the secret information, and a relief hologram forming layer is provided on the entire one surface of the card base so as to cover the scratch concealment layer. Are provided in this order, and both of the surface of the card substrate that contacts the hologram relief forming surface of the relief hologram forming layer and the surface of the scratch concealing layer that covers a part of the surface of the card substrate In addition, a relief shape corresponding to the relief shape of the hologram relief forming surface is provided in a planar shape as one continuous relief shape, and by removing the relief hologram forming layer and the scratch concealment layer by scratching, A scratch card characterized in that the secret information is visible.
The scratch card according to claim 1, wherein an interface between the scratch concealing layer and the relief hologram forming layer is an “optical mirror surface”.
The said scratch concealment layer is a high refractive index layer, The refractive index of the said scratch concealment layer is 1.0 or more larger than the refractive index of the said relief hologram formation layer, The Claim 1 or 2 characterized by the above-mentioned. Scratch card.
  The said scratch concealment layer contains the pigment with an average particle diameter of 1.0 micrometer-10 micrometers, and the fine particle pigment with an average particle diameter of 0.01 micrometer-0.1 micrometer, The said any one of Claim 1 to 3 characterized by the above-mentioned. Scratch card.

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