JPS6213394A - Card - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Purpose of the Invention [Industrial Field of Application] The present invention provides a card having an infrared recording part, which is difficult to forge and easy to distinguish between genuine and false, especially a magnetic recording part. Concerning a card with an infrared recording section.

[Prior art] In recent years, cards with magnetic recording media have become extremely popular.
．． D. Cards, cash cards, bank passbooks, etc.
It is used in a wide range of ways, including credit cards, train tickets, coupon tickets, and commuter passes.

As magnetic cards become more widespread, there are people who misuse them by forging or copying them, and there is a need for technology to prevent this and to accurately determine the authenticity of cards.

[Problems to be Solved by the Invention] The purpose of the present invention is to meet the above-mentioned requirements, to effectively prevent forgery, and to easily determine the authenticity even if a forgery is made.
The purpose is to provide cards that can eliminate fake cards.

[Means for solving the problem] If explained with reference to the drawings, typical in the present invention,
As shown in FIGS. 1 and 2, a card having a magnetic recording section is provided with a magnetic recording section 2 and an infrared recording section 3 on a card base material 1, so that necessary items for the card can be visually checked. The infrared recording section 3 is characterized by comprising an infrared reflective layer 31 and an infrared absorbing layer 32 thereon.

The card of the present invention has various aspects as described below, which will be explained with reference to the drawings.

In a preferred embodiment, one or more of a hiding layer, a printing layer, and a protective layer are provided outside the infrared absorbing layer.
If there are more than one species, provide them in this order.

The example shown in FIG. 2 has all three types.

The embodiment shown in FIG. 3 is a specific example that can be implemented using current card manufacturing technology. A polyvinyl chloride oversheet 7 provided with an infrared recording portion 3 and a polyvinyl chloride oversheet 7 on the other side are laminated by hot pressing, respectively.

In the illustrated example, a milky white polyvinyl chloride center core 8 also serves as an infrared reflective layer 31. Although the magnetic recording section 2 and the infrared recording section 3 are on the same side of the card, they may be on different sides.

The embodiment shown in FIG. 4 is also a specific example that is easy to implement. A polyvinyl chloride oversheet 7 is laminated on one side, and a polyvinyl chloride oversheet 7' having a magnetic recording section 2 on the other side is laminated by hot pressing. In this illustrated example as well, the center core 8 made of milky white polyvinyl chloride also serves as an infrared reflective layer. Although the magnetic recording section 2 and the infrared recording section 3 are on different sides of the card, they may of course be on the same side.

The card base material is sheet-like or plate-like, and its materials include plastics such as polyvinyl chloride, nylon, cellulose diacetate, cellulose triacetate, polystyrene, polyethylene, polypropylene, polyester, polyimide, polycarbonate, and copper. , metals such as aluminum, paper, impregnated paper, etc. can be used alone or in composites. A preferable material may be selected from the above-mentioned materials in consideration of the physical properties required of the base material, such as strength, rigidity, hiding power, and light opacity. The thickness of the base material is about 0.005 to 5#. When it also serves as an infrared reflective layer, milky white polyvinyl chloride is preferred.

The magnetic recording part is 7'-Fe 203 , Co-adhered -F
e203, Fe3O4, Cro2, Fe, Fe-cr
, Fe-CO, Co-cr, co-Nt
.

Known magnetic fine particles such as MnAl5Ba ferrite and 3r ferrite dispersed in a suitable resin or ink vehicle can be formed on a substrate by a coating method such as a gravure method, a roll method, or a knife method.

The magnetic recording section also includes Fe SFe-Cr, Fe
A metal or alloy such as -Co or Co-0r can also be formed as a thin film on a substrate by vacuum evaporation, sputtering, plating, or the like.

When forming a magnetic recording part by coating, the film thickness is 1
-100u, preferably about 5-10μ. When forming the magnetic recording portion by vacuum evaporation, sputtering, or plating, the film thickness is 100 μm to 1 μm, preferably 500 μm.
~1000 people.

'? Examples of the resin or ink vehicle for dispersing magnetic fine particles such as Fe2O3 include butyral resin, vinyl chloride-vinyl acetate copolymer resin, urethane resin, polyester resin,
Cellulose resin, acrylic resin, styrene-maleic acid copolymer resin, etc. are used, and if necessary, rubber resin such as nitrile rubber, urethane elastomer, etc. are added.

Anti-infrared! ) The first layer is formed using a paint or ink obtained by dispersing a pigment with high infrared reflectance in a binder. The binder is a cellulose derivative such as ethylcellulose, ethylhydroxyethylcellulose, cellulose acetate propionate, cellulose acetate,
Styrenic resins such as polystyrene and poly-α-methylstyrene, acrylic or methacrylic resins such as polymethyl methacrylate, polyethyl methacrylate, polyethyl acrylate, and polybutyl acrylate, rosin, rosin-modified maleic acid resin, rosin Select from modified phenolic resins, polymerized rosin resins, polyvinyl acetate resins, coumaron resins, vinyl toluene resins, vinyl chloride resins, polyester resins, polyurethane resins, butyral resins, etc. A plasticizer and other various additives are used as necessary. The layer may be formed by a conventional coating or printing method such as a gravure method, a roll method, a knife method, or an offset method.

The infrared absorbing layer is formed at a desired position by coating or printing a material in which quinocyanines, thiacyanins, and the like having high infrared absorbance are dispersed in a binder similar to that used for the infrared reflective layer.

The hiding layer is formed by applying or printing the same binder as above and adding various pigments that transmit infrared rays but not visible light to form a paint or ink.

The printing layer is provided by printing a desired pattern using a known ink and printing method. Like the hiding layer, it is preferable to use an ink that reflects or absorbs visible light and transmits infrared rays.

The protective layer can be formed by laminating a synthetic resin film, extrusion coating, or applying a synthetic resin paint. The synthetic resin constituting the protective layer may be the same as the synthetic resin used to form the reflective layer, taking into consideration the intended use and adhesion with other layers.

The use of a thermosetting synthetic resin is advantageous in terms of surface hardness and prevention of contamination, and it is particularly preferable to use a paint containing an ultraviolet curable synthetic resin because it can be cured instantly after application.

The magnetic recording section and the infrared recording section may be formed on a transfer sheet or a bonding sheet separately from the card base material, and then provided by adhering them onto the card base material.

[Function] When the card of the present invention is irradiated with infrared rays, as shown in FIG. 2, the portion of the infrared recording section 3 where the infrared absorbing layer 32 is present hardly reflects the infrared rays, while the portion where the infrared absorbing layer 32 is not reflected reflects the infrared rays. Since the infrared reflective layer 31 is provided inside, the infrared rays are reflected at a high rate.

Based on this difference in reflectance, characters and patterns can be read and authenticated. Since the difference in reflectance is large, misreading is virtually zero.

In a preferred embodiment in which a concealing layer 4 that transmits infrared rays is provided on the infrared absorbing layer 32, the presence of the infrared absorbing layer 32 is not even detected, so that characters and patterns cannot be visually distinguished. If a printed layer 5 of background patterns, patterns, characters, etc. is provided thereon, the effect will be further enhanced.

[Example 1] A magnetic paint having the following composition was prepared. (All "parts" are parts by weight.) T Fe2O3r7 MRDJ (Titan Kogyo) 75 parts Partially saponified vinyl chloride vinyl acetate copolymer resin "Vinyrite VAGHJ (LICC) 10 parts Polyurethane elastomer resin Sunbrene 1B11
4BJ (Sanyo Chemical Industries) 25 parts Linear saturated polyester resin "Vylon RV53SSJ (Toyobo> 10 parts isopropyl alcohol 50 parts methyl ethyl ketone 50 parts toluene
50 parts Isocyanate curing agent FAT Mytic NY-220AJ (Mitsubishi Kasei)
- A total of 273 parts of a 100μ thick polyvinyl chloride sheet were gravure coated with this magnetic paint at the positions shown in Figure 1.
A magnetic recording portion of 0μ was formed.

A paint for an infrared reflective layer having the following formulation was prepared.

Partially saline raw salt vinyl vinyl acetate copolymer resin "Vinylite VAGHJ" 20 parts White pigment 10 parts Isocyanate curing agent "Takenate D11ONJ (Narita Pharmaceutical Industries) 3 parts Methyl ethyl ketone 30 parts Toluene
30 parts total 93 parts Thickness of this infrared reflective paint used for card base material: 100
Gravure coating was applied to different positions on the same surface as the magnetic recording portion shown in FIG. 1 of a polyvinyl chloride sheet having a thickness of 2 μm to form an infrared reflective layer having a thickness of 2 μm.

A paint for an infrared absorbing layer having the following formulation was prepared.

Partially saline raw salt vinyl vinyl acetate copolymer resin [Vinyrite VAGHJ 20 parts Pigment rlR750J (Nippon Herbal Medicine) 10 parts Isocyanate hardening agent "Takenate DIIONJ (Narita Pharmaceutical Co., Ltd.) 3 parts Methyl ethyl ketone 30 parts Toluene
30 parts, 93 parts in total This paint for an infrared absorbing layer was coated in a barcode pattern on the infrared reflective layer by gravure printing to form an infrared absorbing layer with a thickness of 2 μm.

A coating for a concealing layer was prepared with the following formulation.

Partially saline raw salt vinyl vinyl acetate copolymer resin [Vinyrite VAGHJ 20 parts Pigment 10 parts Isocyanate curing agent "Takenate D11ONJ (Narita Pharmaceutical Industries) 3 parts Methyl ethyl ketone 30 parts Toluene
30 parts in total, 93 parts This coating material for the hiding layer was gravure coated on the infrared adsorption layer to form a hiding layer with a thickness of 1 μm.

A printing layer paint having the following formulation was prepared.

Partially carbonated raw vinyl chloride vinyl acetate copolymer resin “Vinilite vAGH” 20 parts pigment
10 parts isocyanate curing agent [Takenate D11ONJ (Narita Pharmaceutical Co., Ltd.) 3 parts methyl ethyl 1 to 30 parts toluene 30 parts Total 93 parts Gravure printing was carried out on the concealing layer using this printing layer paint,
A printed layer with a thickness of 1 μm was formed.

A protective layer paint having the following formulation was prepared.

Polyvinyl butyral resin "S-LEC BXJ (Tsukumizu Kagaku) 3 parts Moisture-curing urethane resin "Orestar M95-50Aj (Mitsui Toatsu) 3 parts methyl ethyl ketone 30 parts toluene
30 parts ethyl acetate
30 parts total 96 parts This paint for a protective layer was gravure coated on the printing layer to form a protective layer with a thickness of 0.5 μm.

The infrared recording section was formed in the above order. On the thus formed polyvinyl chloride oversheet in which the magnetic recording section and infrared recording section are on the same surface, there is a milky white polyvinyl chloride center core with a thickness of 560μ and a polyvinyl chloride center core with a thickness of 100μ.
µ polyvinyl chloride oversheet in this order, laminated by heat press at 150℃ and 25Kg/cri, finished and hammered, length 86m, width 54s.
A card having the structure shown in FIG. 3 with a thickness of 0.76 m and a thickness of 0.76 m was obtained.

Writing and reading of information into the magnetic recording section of the thus manufactured card was good, and authenticity determination by infrared rays was easy and accurate.

[Example 2] A 100 μm thick polyvinyl chloride sheet was gravure coated with the same magnetic paint as in Example 1 to form a 10 μm thick magnetic recording section.

Next, a similar infrared recording section was formed on one side of a milky white polyvinyl chloride center core having a thickness of 560 μm using the same paint as in Example 1.

Sandwiching this center core, a polyvinyl chloride oversheet with a thickness of 100μ was placed on one side, and a polyvinyl chloride sheet provided with the above-mentioned magnetic recording section was placed on the other side, and heated to 150°C.
, to 25! Laminated by heat press under the conditions of j/ctA,
After finishing and playing, a card with the structure shown in Figure 4 was obtained. Similar to the card of Example 1, this card performed well in writing and reading information into the magnetic recording section and in infrared discrimination.

λriΩIri In the card of the present invention, the existence of the magnetic recording portion is relatively easily known, and even though it may be copied, the presence of the infrared reflective layer and absorption layer of the infrared recording portion is not easily known. There is little risk of counterfeiting as it will not be detected. Therefore, even if there is a counterfeit product in which only the magnetic recording part is copied, the product cannot be affected by infrared rays, so it can be immediately recognized as a counterfeit product and can be eliminated. A conventional device can be used to write information to the magnetic recording section, and a means for determining the difference in infrared reflectance for reading only needs to be added.

In a preferred embodiment in which a hiding layer, a printed layer, and a protective layer are provided, the hiding layer makes it difficult to detect that the infrared absorbing layer is provided, and the printed layer further enhances the effect. Note that in the embodiment of FIG. 3, the protective layer protects the card entries from abrasion, and 1. D. Provides durability for items that need to be carried for long periods of time, such as cards.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an example of the card of the present invention. FIG. 2 is a schematic enlarged cross section taken along the line AA in FIG. 1. 3 and 4 are enlarged cross-sectional views showing specific examples of the structure of the card of the present invention, and FIG. 3 shows a card in which the magnetic recording section and the infrared recording section are on the same side of the card. Also the fourth
The figures show what is on different sides. 1... Card base material 2... Magnetic recording section 3... Infrared recording section 31... Infrared reflective layer 32... Infrared absorbing layer 4... Hiding layer 5... Printing layer 6. ...Protective layer 7.7'...Oversheet 8...Center core Patent applicant Dai Nippon Printing Co., Ltd. Agent Patent attorney Souo Suga No. 1r11I Figure 2 Figure 3 Figure 4

Claims (8)

[Claims] (1) A card characterized in that an infrared recording section consisting of an infrared reflective layer and an infrared absorbing layer thereon is provided on a card base material, and information necessary for the card is visually recorded. (2) The card according to claim 1, wherein the card base material also serves as an infrared reflective layer. (3) The card according to claim 1 or 2, further comprising a magnetic recording section on the card base material. (4) The card according to claim 3, wherein the magnetic recording section and the infrared recording section are on the same side of the card. (5) The card according to claim 3, wherein the magnetic recording section and the infrared recording section are on different sides of the card. (6) Sandwiching a milky-white polyvinyl chloride center core, a polyvinyl chloride oversheet with a magnetic recording section and an infrared recording section on one side, and a polyvinyl chloride oversheet on the other side. 3. The card according to claim 3, which is obtained by laminating each of the following by heat pressing. (7) A milky-white polyvinyl chloride center core with an infrared recording section on one side, a polyvinyl chloride oversheet on one side, and a magnetic recording section on the other side. The card according to claim 3, which is formed by laminating polyvinyl chloride oversheets by heat pressing. (8) Claims 1 to 7, in which one or more of a hiding layer, a printing layer, and a protective layer are provided outside the infrared absorbing layer, and in the case of two or more, in that order. any card.