JP2001266335A - Transfer type magnetic tape and magnetic card - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic card rich in aesthetic and designing characteristics even when the magnetic card formed by using a transparent or translucent card base material is viewed by eyes from a surface on a side opposite to the side on which a magnetic stripe is provided for the magnetic card and to provide a transfer type magnetic tape for manufacturing the magnetic card. SOLUTION: A coloring layer, and a hiding layer or printing layer as the peed arises, are provided the both sides of a magnetic recording layer to solve the problem above.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a transfer type magnetic tape,
More particularly, the present invention relates to a transfer type magnetic tape for imparting high aesthetics to a magnetic card, and a magnetic card having high aesthetics.

[0002]

2. Description of the Related Art In the production of magnetic cards such as credit cards, bank cards, ID cards and the like having a magnetic stripe as a part thereof, a transfer type magnetic tape is used to provide a magnetic stripe portion to the magnetic card. That is already known. Generally, a transfer type magnetic tape is a protective layer having a releasability from a temporary support film on a temporary support film, and having a surface protection function as the outermost layer of the card after carding, a magnetic recording layer. The adhesive layer is provided in this order, and in the step of manufacturing the magnetic card, the adhesive layer of the transfer type magnetic tape and the card base are overlapped face to face, heated, and pressed, and then The temporary support film is peeled and removed, and the transfer of the protective layer, the magnetic recording layer, and the adhesive layer to the card base is completed. Thereafter, if necessary, the magnetic card to which the magnetic stripe has been transferred is hot-pressed, and a layer including a magnetic recording layer is embedded in the card base material, thereby completing the magnetic card.

Therefore, in the magnetic stripe portion of the magnetic card manufactured in the above process, it is unavoidable that the color of the magnetic recording layer appears on the surface through the transparent protective layer. Darker colored stripes appeared on the card surface, limiting the aesthetics of the magnetic card.

In order to solve this problem, a transfer type magnetic tape provided with a colored layer between a protective layer and a magnetic recording layer has been proposed. This transfer type magnetic tape is obtained by laminating a protective layer, a coloring layer, a magnetic recording layer, and an adhesive layer having a releasability from the temporary support film on a temporary support film in this order, and manufacturing a magnetic card. In this step, the transfer type magnetic tape having no colored layer is used in the same manner as described above. As a result, in the manufactured magnetic card, an arbitrary color of the colored layer appears visually on the stripe portion through the protective layer, and the dark color of the magnetic recording layer is concealed. .

In addition, there has been proposed a transfer type magnetic tape provided with the above-mentioned colored layer, in which a pattern layer print in which a pattern print such as a character or a picture is arranged between the protective layer and the colored layer is provided. This pattern printing layer is provided by printing an arbitrary pattern on the protective layer provided on the temporary support by gravure printing, offset printing, flexographic printing, etc., and the transfer type magnetic tape provided with this pattern printing layer In a magnetic card manufactured by using, a pattern such as a character or a picture appears visually on a stripe portion on the magnetic card, and the design is improved.

On the other hand, an opaque material has been generally used as a card base material, and it is difficult for the magnetic stripe to visually appear on the surface of the magnetic card opposite to the surface on which the magnetic stripe is provided. Since there is no transfer tape, no special consideration has been given to the surface on the adhesive layer side of the transfer type magnetic tape.

However, in recent years, card designs have been diversified, and card base materials of various materials have been used in order to differentiate the card from other cards. In particular, transparent or translucent card substrates have attracted attention because they can form new images as compared with conventional magnetic cards using opaque card substrates.

However, when such a transparent or translucent card substrate is used, a transfer type magnetic tape provided with a colored layer or a pattern printed layer between the protective layer and the magnetic recording layer is used. Even if you manufacture magnetic cards,
The surface of the magnetic card on which the magnetic stripe is provided, when the colored layer and the pattern layer appear visibly to improve aesthetics and design, but when viewed from the surface opposite to the side on which the magnetic stripe is provided. Since no special consideration is given to the surface of the transfer type magnetic tape on the adhesive layer side, it is possible to prevent the dark color of the magnetic recording layer from being visible through a transparent or translucent card substrate. However, it was an obstacle in the aesthetics and design of the magnetic card.

[0009]

The problem to be solved by the present invention is that even when a magnetic card is produced using a transparent or translucent card base material, the magnetic card is not provided with a magnetic stripe. To provide a transfer-type magnetic tape capable of manufacturing a magnetic card with aesthetic and design features when viewed from the opposite side, and the side of the magnetic card opposite to the side on which the magnetic stripe is provided. Another object of the present invention is to provide a magnetic card which is rich in aesthetics and design when viewed from the viewpoint of (1).

[0010]

Means for Solving the Problems The present inventors, as a transfer type magnetic tape used in the manufacture of a magnetic card, provided at least a temporary support film on a temporary support film from the side close to the temporary support film. A protective layer having releasability from the
By preparing a transfer type magnetic tape in which the coloring layer 1, the magnetic recording layer, and the coloring layer 2 are laminated, and using this to transfer the laminated structure to a transparent or translucent card substrate,
We have found that the above tasks are achieved.

In the transfer type magnetic tape, by providing a pattern printing layer on the surface of the colored layer 2 opposite to the magnetic recording layer side, a magnetic card having both aesthetic and design features can be obtained.

The transfer type magnetic tape according to the present invention includes those in which the colored layer 2 has a heat-sensitive adhesive property to the card substrate. In this case, the coloring layer 2 has both functions of the coloring layer and the adhesive layer, and there is no need to provide an adhesive layer again. However, when providing a pattern printing layer on the surface of the coloring layer 2 opposite to the magnetic recording layer side, it is necessary to provide an adhesive layer on the pattern printing layer.

The above-mentioned "colored layer having heat-sensitive adhesiveness to the card substrate" is referred to as "adhesive layer containing a colorant".
It goes without saying that both are synonymous.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a transfer type magnetic tape and a magnetic card of the present invention will be described in detail.

The transfer type magnetic tape of the present invention has a temporary support film, a releasability from the temporary support film, and a protective layer for protecting the surface as the outermost layer of the magnetic card after being transferred to the card. The coloring layer 1 provided on the protective layer, the magnetic recording layer provided on the coloring layer 1, and the coloring layer 2 provided on the magnetic recording layer are essential. Further, a concealing layer may be provided between the coloring layer 2 and the magnetic recording layer and / or between the coloring layer 1 and the magnetic recording layer. Further, an adhesive layer can be provided on the surface of the colored layer 2 opposite to the magnetic recording layer. However, if the colored layer 2 has thermal adhesiveness to the card substrate, an additional adhesive layer is provided. No need. A pattern printing layer may be provided on the surface of the coloring layer 2 opposite to the magnetic recording layer and / or between the coloring layer 1 and the protective layer. When a pattern printing layer is provided on the surface of the coloring layer 2 opposite to the magnetic recording layer, it is necessary to provide an adhesive layer thereon.

In the present invention, any known film can be used as the temporary support film. Examples thereof include polyesters such as polyethylene terephthalate and polyethylene-2, 6-naphthalate, polyolefins such as polypropylene, cellulose derivatives such as cellulose triacetate and cellulose diacetate, and plastics such as polyamide and polycarbonate. Among them, polyethylene terephthalate having both tensile strength and heat resistance is preferable. This temporary support film is peeled off at the later-described magnetic card manufacturing stage.

The thickness of the temporary support film is not particularly limited, but is usually 3 to 100 μm, preferably 5 to 50 μm.

The protective layer in the present invention is a layer which easily peels off from the temporary support film together with other layers at the time of transfer, and also has a surface protection function as the outermost layer of each layer after the transfer.

Examples of the resin binder constituting the protective layer include homopolymers and copolymers of cellulose resin, polyvinyl butyral resin, epoxy resin, phenol resin, polyester resin, polyurethane resin, acrylic resin, methyl methacrylate, and melamine. Resin, etc.
And mixtures of these resins.

The protective layer is formed, for example, by dissolving the above resin binder in a solvent to form a coating liquid for the protective layer, and applying this to a temporary support film by a known method such as a reverse method, a gravure method, or a die coat method. Form.

The solvent used for the coating solution for the protective layer includes:
For example, ketone solvents such as acetone, methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK) and cyclohexanone; ester solvents such as methyl acetate, ethyl acetate and butyl acetate; alcohol solvents such as methanol, ethanol and propanol; hexane and benzene , Toluene, hydrocarbons such as xylene, glycol dimethyl ether, glycol monoethyl ether, dioxane,
Ether solvents such as tetrahydrofuran can be mentioned, and these solvents can be used as a mixture of two or more kinds.

Further, soybean lecithin, phthalic acid-based plasticizer, microsilica, wax or the like can be added to the protective layer, if necessary, as a film modifier. Further, it is preferable to add a curing agent such as a polyisocyanate compound to crosslink between resin binder molecules in order to improve the durability of the protective layer.

The dry coating thickness of the protective layer is 0.3-5 μm,
Preferably it is 0.5 to 2 μm.

The colored layers 1 and 2 of the present invention contain a resin binder and a colorant as essential components. Specifically, a colorant such as a pigment or a dye is used alone or in a mixture of two or more kinds in a resin binder and a solvent in which the resin binder is dissolved, and dispersed by a known method. A coating solution for the layer 2 is prepared, applied and dried by a known method such as a reverse method, a gravure coating method, or a die coating method to obtain the colored layers 1 and 2.

The pigment used for the colored layers 1 and 2 is as follows:
As inorganic pigments, alumina, titanium oxide, chromium oxide, iron oxide, zinc oxide, barium sulfate, etc., and as organic pigments, azo pigments, phthalocyanine pigments, quinacridone pigments, perylene pigments, anthraquinone pigments,
There are many thioindigo-based pigments and indanthrene-based pigments, but there is no particular limitation. Pigment alone or mixed with two or more kinds in the binder resin, two-roll mill,
It is dispersed by a known method such as a three-roll mill, a ball mill, a sand mill, and a disper to prepare a coating solution for the coloring layer 1 and a coating solution for the coloring layer 2.

Further, dyes such as phthalocyanine dyes, azo dyes, nitro dyes, quinoline dyes, methine dyes, azine dyes and fatalein dyes can be used instead of or in combination with the above pigments.

As the binder resin used in the coating solution for the colored layer 1 and the coating solution for the colored layer 2, a known and commonly used binder resin can be used. For example, butyral resin, vinyl chloride-vinyl acetate copolymer resin, urethane resin, polyester resin, cellulose resin, acrylic resin, styrene-maleic acid copolymer resin, and the like.To these resins, if necessary A rubber-based resin such as a nitrile rubber or a urethane elastomer can also be added. Further, heat curing can also be performed using an isocyanate compound.

Examples of the solvent used for the coating solution for the colored layer 1 and the coating solution for the colored layer 2 include acetone, methyl ethyl ketone (MEK), and methyl isobutyl ketone (MIB).
K), ketone solvents such as cyclohexanone, ester solvents such as methyl acetate, ethyl acetate and butyl acetate, alcohol solvents such as methanol, ethanol and propanol, hydrocarbons such as hexane, benzene, toluene and xylene, glycol dimethyl ether, Examples thereof include ether solvents such as glycol monoethyl ether, dioxane, and tetrahydrofuran.
More than one kind can be mixed and used.

The coating liquid for the colored layer 1 and the coating liquid for the colored layer 2 used for forming the colored layers 1 and 2 may be the same, or different coating liquids having different color tones.

The coloring layer 1 is located closer to the surface of the card than the magnetic recording layer when the card is formed. For that reason,
If the thickness of the colored layer 1 is too large, the distance between the recording / reproducing head and the magnetic recording layer becomes large during magnetic recording / reproducing, and the reproducing output is reduced. The necessary recording / reproducing characteristics as a recording medium cannot be maintained.

Therefore, by increasing the thickness of the magnetic recording layer,
It is necessary to compensate for a decrease in reproduction output due to an increase in output loss due to spacing.

However, the resolution, which is another important characteristic of magnetic recording, decreases as the output loss due to spacing increases and as the thickness of the magnetic recording layer itself increases. Also, there is a limit to increasing the thickness of the magnetic recording layer.

The effect of concealing the color of the magnetic recording layer may decrease as the thickness of the colored layer 1 decreases, and the thickness is preferably 0.5 to 10 μm, especially 1 It is preferably about 6 μm. The same applies to the case where a concealing layer described later is provided. In this case, the total thickness of the colored layer 1 and the concealing layer is 0.5 to 10 μm,
Particularly, 1 to 6 μm is a preferable value.

On the other hand, since the coloring layer 2 is located closer to the card base than the magnetic recording layer in the magnetic card, it cannot be a cause of output loss due to spacing during magnetic recording / reproduction. There is no regulation of the film thickness from this viewpoint. However, since the coloring layer 2 is applied on the magnetic recording layer, the surface state after the application of the coloring layer 2 is strongly affected by the surface state of the magnetic recording layer. In particular, since the surface of a magnetic recording layer using a ferrite-based magnetic powder such as barium ferrite tends to be rough, if the film thickness of the colored layer 2 is small, the surface of the dried colored layer 2 is also rough. And a phenomenon that the appearance is extremely deteriorated is observed. Therefore, the thickness of the colored layer 2 is preferably 0.5 μm to 10 μm, particularly preferably 1 μm to 10 μm. The same applies to the case where a concealing layer described later is provided. In this case, the total thickness of the colored layer 2 and the concealing layer is preferably 0.5 μm to 10 μm, and particularly preferably 1 μm to 10 μm. Become.

Further, as the resin binder constituting the colored layer 2, a resin binder having high heat-sensitive adhesiveness to the card substrate can be used. In this case, it is not necessary to provide an adhesive layer again. Such means reduces the number of steps by one in the production of the transfer type magnetic tape, and is a very effective means for reducing costs.

In this case, as a resin binder constituting the colored layer 2, a resin binder having a heat-sensitive adhesive property to a card base material is generally used, and this resin binder is dissolved in a solvent. The above-mentioned pigment, dye and the like are mixed and dispersed to prepare a coating solution for the coloring layer 2, and the coating solution for the coloring layer 2 is applied to the magnetic recording layer by the same method as that for the coloring layer 1 and dried. Can be

Examples of the resin exhibiting heat-sensitive adhesiveness to the card substrate include, for example, a copolymer of vinyl chloride and vinyl acetate, and a copolymer further added with vinyl alcohol, maleic anhydride or acrylic acid. Examples thereof include a vinyl chloride resin, a polyester resin, an acrylic resin, a polyimide resin, and a polyurethane resin.

In the present invention, a shielding layer may be provided between the colored layer 2 and the magnetic recording layer and / or between the colored layer 1 and the magnetic recording layer. The concealing layer is provided to conceal the color of the magnetic recording layer and to enhance the color developability of the colored layer.
This concealing layer is, for example, a metal powder such as aluminum, copper, silver, or a pigment such as titanium oxide, zinc oxide, or silica in a resin binder in a known manner such as a two-roll mill, a three-roll mill, a ball mill, a sand mill, and a disper. The coating material for the concealing layer adjusted by mixing and dispersing by the method is applied on the magnetic recording layer and / or the colored layer 1 by a known method such as a reverse method, a gravure method, or a die coat method.
Obtained by drying. The concealing layer may contain a known pigment or dye to color the concealing layer. Further, a metal thin film can be used as the concealing layer. In this case, a metal thin film layer can be formed by forming a metal such as aluminum or tin by a vacuum evaporation method, a sputtering method, or the like. The concealing layer may be composed of a plurality of layers.

When the concealing layer is provided by a coating method, the thickness is preferably 0.5 to 5 μm, and when a metal thin film is used as the concealing layer, the thickness is preferably 0.05 to 0.5 μm.

When the concealing layer is provided by a coating method, the pigment used in the concealing layer coating solution may be a metal powder such as aluminum, copper and silver; an oxide powder such as titanium oxide and zinc oxide; However, the present invention is not limited thereto.

As the binder resin used in the coating solution for the concealing layer, a known and commonly used binder resin can be used. For example, butyral resin, vinyl chloride-vinyl acetate copolymer resin, urethane resin, polyester resin, cellulose resin, acrylic resin, styrene-maleic acid copolymer resin, and the like.To these resins, if necessary A rubber-based resin such as a nitrile rubber or a urethane elastomer can also be added. Further, heat curing can also be performed using an isocyanate compound.

As the solvent used in the coating solution for the concealing layer, for example, acetone, methyl ethyl ketone (ME
K), ketone solvents such as methyl isobutyl ketone (MIBK), cyclohexanone, methyl acetate, ethyl acetate,
Examples include ester solvents such as butyl acetate, alcohol solvents such as methanol, ethanol, and propanol; hydrocarbons such as hexane, benzene, toluene, and xylene; and ether solvents such as glycol dimethyl ether, glycol monoethyl ether, dioxane, and tetrahydrofuran. These solvents can be used as a mixture of two or more kinds.

In the present invention, providing a pattern printing layer on the surface of the colored layer 2 opposite to the magnetic recording layer and / or between the colored layer 1 and the protective layer improves the design of the magnetic card. This is an effective means.

The pattern printing layer used in the present invention contains a resin binder and a colorant as essential components. In particular,
A colorant such as a pigment or a dye is used alone or in a solvent dissolving the resin binder, or a mixture of two or more, in a solvent dissolving the resin binder, and dispersed by a known method such as a two-roll mill, a three-roll mill, a ball mill, a sand mill, and a disper. Then, a printing ink for a pattern layer is prepared, printed and dried by a known printing method to obtain a pattern printing layer.

As the binder resin used for the pattern printing layer, known and commonly used binder resins can be used. For example,
Butyral resin, vinyl chloride-vinyl acetate copolymer resin, urethane resin, polyester resin, cellulosic resin, acrylic resin, styrene-maleic acid copolymer resin, etc., and these resins, if necessary, nitrile rubber And the like, a rubber-based resin or a urethane elastomer. Further, heat curing can also be performed using an isocyanate compound.

The pigments used in the pattern printing layer include inorganic pigments such as alumina, titanium oxide, chromium oxide, iron oxide, zinc oxide and barium sulfate, and organic pigments such as azo pigments, phthalocyanine pigments and quinacridone pigments. And perylene pigments, anthraquinone pigments, thioindigo pigments, and indanthrene pigments, but are not particularly limited. The printing ink for a pattern printing layer is prepared by dispersing a pigment alone or in a mixture of two or more kinds in a binder resin by a known method.

Further, dyes such as phthalocyanine dyes, azo dyes, nitro dyes, quinoline dyes, methine dyes, azine dyes and fatalein dyes can be used instead of or in combination with the above pigments.

Examples of the solvent used for the pattern printing layer include ketone solvents such as acetone, methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK) and cyclohexanone; ester solvents such as methyl acetate, ethyl acetate and butyl acetate; Examples thereof include alcohol solvents such as ethanol and propanol, hydrocarbons such as hexane, benzene, toluene, and xylene, and ether solvents such as glycol dimethyl ether, glycol monoethyl ether, dioxane, and tetrahydrofuran. The above may be used in combination.

The thickness of the pattern printing layer is not particularly limited, but may be 0.3 μm to 1 μm depending on the color developing properties of the ink.
0 μm is preferable, and particularly preferably 0.5 μm to 6 μm.

The material constituting the pattern printing ink for forming the pattern printing layer may be a material that absorbs or reflects light of a specific wavelength, a material that emits fluorescence or phosphorescence, a material having a luminous property, or any other visible or invisible light. Regardless of the above, tampering prevention and forgery prevention can be provided by using a material that can be detected by a specific method.

The printing method is not particularly limited, but known printing methods such as gravure printing, flexographic printing, offset printing, and screen printing can be used.

In the transfer type magnetic tape, the total thickness of the protective layer, the pattern printing layer, the coloring layer 1 and the concealing layer existing between the temporary support film and the magnetic recording layer is determined by the magnetic recording when the card is formed. From the viewpoint of reproduction characteristics, it is necessary to reduce the size as much as possible, and the total is 0.8 to 10 μm, especially 1.
It is preferably in the range of 5 to 6 μm.

In the present invention, the magnetic recording layer contains magnetic powder and a binder resin as essential components.

For the magnetic recording layer, for example, a magnetic paint containing a magnetic powder, a resin binder and a solvent for dissolving the resin binder is applied on the temporary support film after forming the protective layer and the colored layer 1 in this order, After the orientation treatment of the magnetic powder, it can be formed by drying.

The dry thickness of the magnetic recording layer is preferably from 2 to
50 μm, more preferably 5 to 20 μm
Range.

As the magnetic powder, known magnetic powders such as γ-iron oxide, magnetite, cobalt-coated iron oxide, chromium oxide, iron-based metal magnetic powder, barium ferrite, and strontium ferrite can be used. Those having a coercive force in the range of 20 to 320 kA / m are preferable.

As the binder resin used for the magnetic recording layer, known and commonly used binder resins can be used. For example,
Butyral resin, vinyl chloride-vinyl acetate copolymer resin, urethane resin, polyester resin, cellulosic resin, acrylic resin, styrene-maleic acid copolymer resin, etc., and these resins, if necessary, nitrile rubber And the like, a rubber-based resin or a urethane elastomer. Further, heat curing can also be performed using an isocyanate compound.

Examples of the solvent used for the magnetic recording layer include ketone solvents such as acetone, methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK) and cyclohexanone; ester solvents such as methyl acetate, ethyl acetate and butyl acetate; Examples thereof include alcohol solvents such as ethanol and propanol, hydrocarbons such as hexane, benzene, toluene, and xylene, and ether solvents such as glycol dimethyl ether, glycol monoethyl ether, dioxane, and tetrahydrofuran. The above may be used in combination.

The magnetic paint can be obtained, for example, by kneading and dispersing the above magnetic powder, resin binder and solvent.

The magnetic paint may further contain, if necessary, an auxiliary agent such as a surfactant, a silane coupling agent, a plasticizer, a wax, or a silicone oil, and further, a filler such as carbon black. .

In kneading and dispersing to produce a magnetic coating material, various kneading and dispersing machines can be used. Examples of the kneading and dispersing machine include a two-roll mill, a three-roll mill, a ball mill, a pebble mill, a Henschel mixer, a cobol mill, a tron mill, a sand mill, a sand grinder, a segbar lighter, a high-speed impeller disperser, a high-speed stone mill, and a high-speed impact mill. , Dispers,
Examples include a high-speed mixer, a homogenizer, an ultrasonic disperser, an open kneader, a continuous kneader, and a pressure kneader.

The application of the magnetic paint is not particularly limited, and a known coating method may be used. After a predetermined amount of the magnetic paint is applied, the direction of easy magnetization of the magnetic powder becomes the longitudinal direction of application of the magnetic recording layer. And drying is performed. The coating method can be manufactured according to the method used for manufacturing a single-layer or multi-layer magnetic recording medium, such as a gravure method, a reverse method, an air doctor method,
A blade coater method, an air knife coater method, a squeeze coater method, an impregnation coater method, a transfer roll coater method, a kiss coater method, a cast coater method, a spray coater method, a die coater method, and the like can be used.

As the orientation method, a known method, for example, a repulsion facing permanent magnet, a solenoid type electromagnet, or the like can be used. The magnetic field strength is preferably in the range of 1000 to 6000G.

The adhesive layer used in the present invention is generally prepared by dissolving a heat-sensitive adhesive resin in a solvent, mixing and stirring to prepare an adhesive coating, and applying the adhesive coating on the magnetic recording layer. By a known method such as a reverse method, a gravure method, or a die coat method.

Examples of the resin exhibiting heat-sensitive adhesive properties include, for example,
A vinyl chloride resin such as a copolymer of vinyl chloride and vinyl acetate, or a copolymer obtained by further adding vinyl alcohol, maleic anhydride or acrylic acid, a polyester resin, an acrylic resin, a polyimide resin, a polyurethane resin, or the like. Can be mentioned.

Examples of the solvent used for the adhesive layer include ketone solvents such as acetone, methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK) and cyclohexanone; ester solvents such as methyl acetate, ethyl acetate and butyl acetate; Alcoholic solvents such as ethanol and propanol, hexane, benzene, toluene,
Hydrocarbons such as xylene, glycol dimethyl ether,
Examples thereof include ether solvents such as glycol monoethyl ether, dioxane, and tetrahydrofuran. These solvents may be used as a mixture of two or more kinds.

The thickness of the adhesive layer is preferably from 0.5 to 15 μm, particularly preferably from 0.5 to 5 μm.

The substrate of the card which is a support for the magnetic card is required to be transparent or translucent, and its material is not limited. For example, polyvinyl chloride, nylon, cellulose diacetate, polystyrene, polyethylene A plastic film made of polypropylene, polyester, polyimide, polycarbonate, etc., or a biodegradable film or sheet of polylactic acid having biodegradability can be used. Even if other than these, the strength required for each use as a magnetic recording medium can be used. Can be used without particular limitation.

The magnetic card of the present invention has
A magnetic card characterized in that at least a colored layer 2, a magnetic recording layer, a colored layer 1, and a protective layer are formed from the side close to the card substrate, and the card substrate is transparent or translucent. Further, a shielding layer may be provided between the colored layer 2 and the magnetic recording layer and / or between the colored layer 1 and the magnetic recording layer. A pattern printing layer may be provided on the surface of the coloring layer 2 opposite to the magnetic recording layer and / or between the coloring layer 1 and the protective layer. When the colored layer 2 does not have heat-sensitive adhesiveness to the card substrate, or when a pattern printing layer is provided on the surface of the colored layer 2 opposite to the magnetic recording layer, an adhesive layer is provided between the colored layer 2 and the card substrate. It is necessary to provide.

This magnetic card is usually manufactured using the transfer type magnetic tape of the present invention.

In the magnetic card of the present invention, the adhesive layer of the transfer type magnetic tape of the present invention, or when the colored layer 2 also functions as the adhesive layer, the colored layer 2 is overlaid on the card base material,
Both are obtained by thermocompression bonding, peeling off the temporary support film of the transfer type magnetic tape, and transferring the laminated structure.
Separately, the temporary support film is peeled off from the transfer type magnetic tape of the present invention, and when the adhesive layer or the colored layer 2 also serves as the adhesive layer, the colored layer 2 is laminated on the card base material. Can also be obtained by bonding the two.
Further, if necessary, the transferred laminated structure can be hot-pressed and embedded in the card base material to smooth the surface of the magnetic card.

[0072]

EXAMPLES The present invention will be described in more detail with reference to the following Examples and Comparative Examples, but the present invention is not limited to the Examples. Hereinafter, "parts" means "parts by mass". I do.

(Example 1) As a temporary support film, a polyethylene terephthalate film having a thickness of 24 µm was used, and a protective layer composition of the following a was formed on one surface of the film.
The composition for a colored layer of b, the composition for a magnetic recording layer of c, the composition for a colored layer of b, and the composition for an adhesive layer of d are all applied in this order using a reverse coater and dried. And a protective layer, a colored layer 1, a magnetic recording layer, a colored layer 2, and an adhesive layer, respectively. The thickness of each layer after drying is
The protective layer is 1 μm, the colored layer 1 is 2 μm, and the magnetic recording layer is 7 μm.
m, the colored layer 2 was 2 μm, and the adhesive layer was 1.5 μm. The film provided with each of the above layers was cut into 1/2 inch width to prepare a transfer type magnetic tape.

A Composition for Protective Layer Polyvinyl Butyral Resin 10 parts (“SREC BM-1” manufactured by Sekisui Chemical Co., Ltd.) MEK 35 parts Toluene 35 parts Ethanol 20 parts

B. Composition for Colored Layer 20 parts of titanium oxide (“Taipe R830” manufactured by Ishihara Sangyo) 10 parts of vinyl chloride-vinyl acetate copolymer resin (“VAGH” manufactured by Union Carbide) 35 parts of MEK 35 parts of toluene 25 parts of acetic acid Ethyl 10 parts

C Composition for Magnetic Recording Layer 40 parts of barium ferrite magnetic powder (manufactured by Toda Kogyo Co., Ltd .; coercive force 220 kA / m) 6 parts of vinyl chloride resin (“MR-110” manufactured by Zeon Corporation) 11 parts of polyurethane resin "L7-750" manufactured by Dainippon Ink and Chemicals, Inc.) MEK 18 parts Toluene 18 parts Cyclohexanone 7 parts

D. Composition for Adhesive Layer Polyurethane Resin 1.5 parts (“TS-03” manufactured by Dainippon Ink and Chemicals, Inc.) 3.5 parts vinyl chloride-vinyl acetate copolymer resin (“1000LT3 manufactured by Denki Kagaku” ]) MEK 45 parts Toluene 50 parts

Example 2 The thickness of the colored layer 2 after drying was 1 μm.
A transfer type magnetic tape was prepared in the same manner as in Example 1 except that m was used.

Example 3 Between the colored layer 1 and the magnetic recording layer, and between the colored layer 2 and the magnetic recording layer, the following concealing layer composition e was dried using a reverse coater. A transfer type magnetic tape was prepared in the same manner as in Example 1 except that a concealing layer having a thickness of 2 μm was formed.

E Hiding layer composition Aluminum powder 20 parts (Showa Aluminum Powder Co., Ltd. "210EA") Vinyl chloride-vinyl acetate copolymer resin 10 parts (Union Carbide Co., Ltd. "VAGH") MEK 35 parts Toluene 25 parts Acetic acid Ethyl 10 parts

(Example 4) Between the colored layer 1 and the protective layer, and between the colored layer 2 and the adhesive layer, a gravure ink of the following f was used, and the film thickness after drying was 1.5 μm by gravure printing.
A transfer type magnetic tape was prepared in the same manner as in Example 1 except that the m print layer was formed.

F Gravure ink Titanium oxide (“Taipe R830” manufactured by Ishihara Sangyo Co., Ltd.) 15 parts Phthalocyanine 5 parts (“First Gen Blue TGR” manufactured by Dainippon Ink and Chemicals, Inc.) Vinyl chloride-vinyl acetate copolymer resin 10 parts (Union "VAGH" manufactured by Carbide Co.) MEK 35 parts Toluene 25 parts Ethyl acetate 10 parts

(Example 5) As a temporary support film, a polyethylene terephthalate film having a thickness of 24 µm was used.
The composition for the colored layer b, the composition for the magnetic recording layer c, and the adhesive composition for the colored layer 2 g were applied in this order using a reverse coater, and dried, and then the protective layer, the colored layer, respectively. A layer 1, a magnetic recording layer, and a colored layer 2 having adhesiveness were provided. The thickness of each layer after drying is 1 μm for the protective layer.
m, the colored layer 1 was 2 μm, the magnetic recording layer was 7 μm, and the colored layer 2 having adhesiveness was 2 μm. The film provided with each of the above layers was cut into 1/2 inch width to prepare a transfer type magnetic tape.

G Adhesive composition for coloring layer 2 Titanium oxide (“Taipe R830” manufactured by Ishihara Sangyo Co., Ltd.) 20 parts Polyurethane resin 2 parts (TS-03 manufactured by Dainippon Ink and Chemicals, Inc.) Vinyl chloride-vinyl acetate copolymer Resin 8 parts (1000LT3 manufactured by Denki Kagaku) MEK 35 parts Toluene 25 parts Ethyl acetate 10 parts

Comparative Example 1 A transfer type magnetic tape was prepared in the same manner as in Example 1 except that the colored layer 2 was not provided.

(Comparative Example 2) The dried layer thickness of the colored layer 2 was set at 0.
A transfer type magnetic tape was produced in the same manner as in Example 1 except that the thickness was 4 μm.

(Magnetic Card) Using the transfer-type magnetic tapes prepared in Examples 1 to 5 and Comparative Examples 1 and 2, using a card maker (“LX-EM4” manufactured by Interline), a transparent polyvinyl chloride was used. Card base (Taira Chemical; 1
Eight 00 μm thick transparent vinyl chloride sheets laminated)
After transferring the laminate, the temporary support film is removed.
It was hot-pressed under the conditions of 40 ° C. and 0.13 MPa, and punched out in a card shape to produce a magnetic card.

(Test Items and Results) The aesthetics and design of the magnetic card when viewed from the side opposite to the side on which the magnetic stripe was provided were visually evaluated.

Table 1 shows the layer structure of the magnetic cards manufactured using the transfer type magnetic tapes of Examples 1 to 5 and Comparative Examples 1 and 2, and the results of visual evaluation of aesthetics. In Example 3, in which the concealing layer was provided between the coloring layers 1 and 2 and the magnetic recording layer, the coloring of the coloring layer was the best, and the aesthetics were the most excellent. Further, Example 4 in which the pattern printing layer was provided was excellent in design since any design could be applied with the colored layer as a background. On the other hand, in Comparative Example 1 in which the colored layer 2 was not provided, the brown color, which is the color of the magnetic recording layer, appeared visually through the transparent card base material, and the aesthetics were poor. In addition, the colored layer 2 is set at 0.
In Comparative Example 2 having a thickness of 4 μm, fine irregularities on the surface of the magnetic recording layer, which was the lower layer during coating, appeared on the surface of the colored layer 2 as they were, impairing the appearance, and the color of the magnetic recording layer was completely changed. Cannot be completely concealed, and the color of the colored layer 2 and the color of the magnetic recording layer are mixed, that is, the color that appears visually is not the white color which is the color of the colored layer 2, but the colors of both layers are mixed. The aesthetics were poor due to the light brown color. In Examples 1 and 2, such fine irregularities on the surface of the colored layer 2 were not observed, and the aesthetics were improved. Further, in Example 5 in which the function of the adhesive layer was imparted to the colored layer 2, the aesthetics were the same as in Example 1.

[0090]

[Table 1]

[0091]

According to the present invention, at least a colored layer 2, a magnetic recording layer, a colored layer 1, and a protective layer are formed on a transparent or translucent card substrate from the side close to the card substrate.
This makes it possible to manufacture a magnetic card having excellent aesthetics and design when viewed from the surface of the magnetic card on which the magnetic stripe is provided and the surface opposite to the side on which the magnetic stripe is provided. When the magnetic card is manufactured through a transfer step, at least a temporary support is formed on a temporary support film from a side close to the temporary support film as a transfer type magnetic tape used for manufacturing a magnetic card. This can be easily realized by using a transfer type magnetic tape in which a protective layer, a colored layer 1, a magnetic recording layer, and a colored layer 2 having peelability from a film are laminated.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C005 HA30 HB01 HB09 JA02 KA01 KA07 KA09 KA10 KA15 KA37 KA40 KA52 LA18 LA20 3B005 EA01 EA18 EB00 EB01 EB09 EC30 FA04 FA16 FB11 FB21 FB39 FB61 CA02 A

Claims (10)

[Claims] 1. A transfer type magnetic tape in which at least a protective layer, a coloring layer 1, a magnetic recording layer, and a coloring layer 2 are laminated on a temporary support film from a side close to the temporary support film. 2. between the colored layer 2 and the magnetic recording layer, and / or
2. The transfer type magnetic tape according to claim 1, wherein a concealing layer is provided between the coloring layer 1 and the magnetic recording layer. 3. The transfer type magnetic tape according to claim 1, wherein the colored layer 2 has a heat-sensitive adhesive property to the card base material. 4. A surface of the colored layer 2 opposite to the magnetic recording layer,
3. The transfer type magnetic tape according to claim 1, wherein a pattern printing layer is provided between the coloring layer 1 and the protective layer. 5. The transfer type magnetic tape according to claim 1, wherein an adhesive layer is provided on an uppermost layer farthest from the temporary support film. 6. At least a colored layer 2, a magnetic recording layer, a colored layer 1, and a protective layer are formed on a card base from a side close to the card base, and the card base is transparent or translucent. A magnetic card, characterized in that: 7. between the colored layer 2 and the magnetic recording layer, and / or
7. The magnetic card according to claim 6, wherein a concealing layer is provided between the coloring layer 1 and the magnetic recording layer. 8. The magnetic card according to claim 6, wherein the coloring layer has an adhesive function. 9. A surface of the colored layer 2 opposite to the magnetic recording layer,
8. The magnetic card according to claim 6, wherein a pattern printing layer is provided between the coloring layer 1 and the protective layer. 10. The magnetic card according to claim 6, further comprising an adhesive layer between the card base and the colored layer.