JPH05189754A - Magnetic card - Google Patents

Abstract

PURPOSE:To enable sure recording with a magnetic recorder and sure readout with a magnetic reader even if a magnetic card is produced without accurately aligning a magnetic recording layer and the printing position of a pattern, etc., as the object of a cutting position at the time of producing the card. CONSTITUTION:A magnetic recording layer 3 is formed over the entire surface of a magnetic card 1 and the entire surface of the recording layer 3 is coated with a shielding layer 4.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to magnetic cards.

[0002]

2. Description of the Related Art Conventionally, magnetic cards have been widely used as ID cards, cash cards, credit cards and the like.

This type of magnetic card is a so-called concealed card having a structure in which a magnetic recording layer in the form of a stripe is provided on the surface of a card substrate made of plastic or the like, and a pattern or the like is printed on the surface to conceal the magnetic stripe. What is called is commonly used.

As a method for manufacturing the above-mentioned concealed card,
A large-sized card substrate for taking a plurality of sheets is aligned with a predetermined position on the front surface of the base material and, if necessary, the back surface of the base material, a stripe-shaped magnetic recording layer is provided by a printing method or a transfer method, and then at least the surface of the card. On the side, a method is adopted in which solid printing or printing of a pattern or the like is performed to conceal the magnetic recording layer, and then the printing of the pattern or the like is set as a target of a cutting position to obtain a plurality of cards at the same time. ..

[0005]

However, the stripe-shaped magnetic recording layer in the above conventional magnetic card is
It must be accurately provided at a predetermined position on the magnetic card so as to surely correspond to the position of the magnetic head of the magnetic recording device or the reading device, but the relative positional relationship between the printing position of the pattern etc. and the magnetic recording layer. If a deviation occurs in the card, the card is cut for the purpose of printing a pattern or the like, and the resulting card has a stripe-shaped magnetic recording layer that is misaligned from its original position on the card. There is a problem that it becomes difficult to read magnetic information or read information in the device or the reading device.

For this reason, conventionally, it is necessary to accurately align the position where the magnetic recording layer is formed on the card base material with the printing position of the pattern or the like which is the target of the cutting position at the time of manufacturing the card, which is a complicated work. Was needed. Further, in the case of a card having a striped magnetic recording layer on both the front and back sides of the card, the striped magnetic recording layers on the front and back sides must be provided at overlapping positions in view of the specifications of the magnetic card.
In the case of such a card, it is necessary to accurately align the magnetic recording layers on both the front and back sides, which causes a problem that the card manufacturing becomes more complicated.

Further, it is preferable that the striped magnetic recording layer on the front surface side of the card is completely hidden by printing a pattern or the like in order to enhance the design of the card, but the striped magnetic recording layer is printed by the pattern or the like. Even if the layer is formed quite thick, the stripe shape can be seen from the surface, and if the printing layer is made too thick to hide the magnetic recording layer, the magnetic output will decrease and magnetic recording and reading will be difficult. It was very difficult to completely hide the stripe-shaped magnetic recording layer in the magnetic card.

The present invention has been made in view of the above points,
By providing the magnetic recording layer on the entire surface of the card, even if the card is manufactured without the complicated work of accurately aligning the position of the magnetic recording layer with the printing layer such as a pattern, the magnetic recording device or the An object of the present invention is to provide a magnetic card capable of surely performing magnetic recording and information reading in a magnetic reading device.

It is another object of the present invention to provide a magnetic card having the above-mentioned magnetic recording layer on the entire surface, which can prevent the magnetic recording layer from peeling off when the card surface is embossed.

[0010]

That is, the magnetic card of the present invention is characterized in that the magnetic recording layer is provided over the entire surface of the card, and the entire surface of the magnetic recording layer is covered with a concealing layer.

In the magnetic card of the present invention, in order to prevent the magnetic recording layer from peeling off when the card is embossed, the magnetic recording layer provided over the entire surface of the card is a vinyl chloride-vinyl acetate copolymer layer. A binder containing a united material and polyurethane in a ratio of 0: 100 to 30:70,
Composed of magnetic powder, binder: magnetic powder = 20: 80-
It is preferably formed by a magnetic composition containing 40:60.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the magnetic card 1 of the present invention, which has a magnetic recording layer 3 on the entire front surface of a substrate 2, and the magnetic recording layer 3 is a concealing layer 4. The entire surface is covered with. The surface of the concealing layer 4 is provided with a decorative layer 5 such as letters and pictures as necessary, and the surface thereof is covered with a protective layer 6. On the back surface side of the base material 2, a stripe-shaped magnetic recording layer 7 and a decorative layer 8 such as letters and pictures are provided.

As the base material 2, a sheet made of a thermoplastic resin is used. Examples of the thermoplastic resin forming the base material 2 include polyvinyl chloride, polyolefin, polyethylene terephthalate, polystyrene, polymethacrylate, polycarbonate and the like. The base material 2 is not limited to the one-layered structure, but may have a two-layered structure in which two oversheets 2a and 2b are laminated as shown in FIG. It is also possible to have a three-layer structure in which the core sheet 2c is further laminated between 2b,
Alternatively, although not particularly shown, a layered structure of four or more layers can be used, and an appropriate number of layered structures can be formed according to the method in the manufacturing process and the manufacturing efficiency. When the base material 2 has a laminated structure of a plurality of layers, the respective layers can be laminated by thermocompression bonding or, if necessary, laminated with an adhesive. The thickness of the substrate 2 as a whole is about 0.7 mm according to the standard of the card.

In the magnetic card 1 shown in FIGS. 3 and 4, since the decorative layer 8 on the back side is covered with the oversheet 2b, the decorative layer 8 is less likely to be rubbed and fallen off. The base material 2 may be entirely transparent or opaque, but in the case of the magnetic card shown in FIGS. 3 and 4 in which the decorative layer 8 is covered with the oversheet 2b, at least the oversheet is used. 2b needs to be transparent enough to see through the decorative layer 8.

The magnetic recording layer 3 can be formed by a known transfer method or coating method and has a thickness of 10 to 20 μm.
It is preferably formed to a certain degree. As the magnetic composition for forming the magnetic recording layer 3, a known magnetic composition in which magnetic powder is dispersed in a resin binder can be used, but characters or the like are usually formed by embossing on the card surface side. Therefore, it is preferable to use a magnetic composition having a specific composition capable of preventing the magnetic layer from falling off when embossing.

As such a magnetic composition, a vinyl chloride-vinyl acetate copolymer and polyurethane are used at 0: 100.
A mixed resin contained in a ratio of ˜30: 70 as a binder,
Binder: magnetic powder = those containing in a ratio of 20:80 to 40:60 are preferable.

The above magnetic composition can be applied by a coating method after being dissolved or dispersed in an organic solvent such as methyl ethyl ketone, toluene, cyclohexanone, ethyl acetate or the like. When the magnetic composition dissolved or dispersed in such an organic solvent is applied to a vinyl chloride sheet by a coating method to form the magnetic recording layer 3 on the substrate 2, the vinyl chloride sheet is used as an organic solvent resistant material. Is high,
It is preferable to use a material having excellent heat resistance.

Since the concealing layer 4 conceals the magnetic recording layer 3,
It can be formed by printing using an ink having a desired color and high concealing property. The hiding layer 4 can be formed by performing overprinting several times, or can be formed by overprinting with a plurality of colors in order to enhance the hiding property. The thicker the hiding layer 4 is, the better the hiding property of the magnetic recording layer is. However, the thicker the hiding layer 4 is, the lower the magnetic output is, and the more difficult the writing and reading of information becomes. The thickness of the concealing layer 4 which is excellent in concealing property of the magnetic recording layer 3 and can secure a sufficient magnetic output is
Although it varies depending on the holding power of the magnetic recording layer 3 and the hiding property of the ink used for the hiding layer 4, it is usually preferably about 1 to 4 μm.

The decoration layer 5 can be formed by a printing method such as silk screen printing, gravure printing, offset printing, etc. In order to form the decoration layer 5 having a uniform thickness and no color unevenness, silk screen printing, Offset printing is preferred.

The protective layer 6 can also be formed by a printing method such as silk screen printing, gravure printing or offset printing. The protective layer 6 needs to be transparent enough to see through the concealing layer 4 and the decorative layer 5. Protective layer 6
Is preferably a vinyl chloride-vinyl acetate copolymer, polyurethane, polymethacrylate, nitrocellulose, polyester or the like as a binder, because it has a function of protecting the concealing layer 4 and the decorative layer 5 and the property of allowing these layers to be seen through. It is desirable to use transparent ink for thickness of 1 to 4
It is preferable to form it to about μ.

The striped magnetic recording layer 7 provided on the back side of the card 1 can be formed by a known transfer method or coating method in the same manner as a conventional magnetic card of this type. Moreover, the decoration layer 8 on the back surface side can be formed in the same manner as the decoration layer 5 on the front surface side.

FIGS. 5 to 7 show other embodiments of the present invention. The magnetic card 1 shown in FIG. The entire surface of the recording layer 9 is covered with the magnetic masking layer 10, the decorative layer 8 is further provided on the magnetic masking layer 10 if necessary, and then the protective layer 11 is covered. Further, the magnetic card 1 shown in FIG.
The base material 2 in the magnetic card shown in FIG. 5 has a two-layer structure in which two oversheets 2a and 2b are laminated, and the magnetic card 1 shown in FIG. It has a three-layer structure in which a core sheet 2c is laminated between the sheets 2a and 2b.

The magnetic card 1 of the present invention needs to have a magnetic recording layer which covers at least the entire surface of one surface of the card, and the magnetic recording layer is usually provided on the front surface side of the card. Even if the stripe-shaped magnetic recording layer 7 as shown in FIGS. 2 to 4 is provided on the back side of the card,
The magnetic recording layer 9 may be provided over the entire back surface of the card as shown in FIGS. 5 to 7, but the back surface of the card may have no magnetic recording layer for information recording. good.

[0024]

As described above, the magnetic card of the present invention has the magnetic recording layer over the entire surface of the card, and the surface of the magnetic recording layer is covered with the concealing layer. Even if the position where the pattern should be printed is misaligned, the magnetic recording layer formed over the entire surface of the card obtained by aligning with the pattern printing on the front surface and cutting the card results in the conventional striped magnetic recording. There is no fear that recording in a magnetic recording device or reading by a magnetic reading device will become impossible unlike a magnetic card provided with layers.

Since the magnetic recording layer is provided on the entire surface of the card, it is easy to conceal the magnetic recording layer even if the thickness of the magnetic concealment layer is reduced, and the concealed printing layer is used like a card having a striped magnetic recording layer. Since there is no possibility that a stripe-shaped mark will appear on the surface of the magnetic recording layer, it is possible to surely conceal the magnetic recording layer and secure a sufficient magnetic output at the same time.

In the magnetic recording layer, the binder is made of vinyl chloride-vinyl acetate copolymer and polyurethane at 0: 100.
Composed of a mixture of ˜30: 70, binder: magnetic powder =
By forming the magnetic composition in a ratio of 20:80 to 40:60, it is possible to prevent the magnetic layer from coming off when the card surface is embossed.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a magnetic card of the present invention.

FIG. 2 is a vertical sectional view taken along the line II-II of FIG.

FIG. 3 is a vertical cross-sectional view of another embodiment of the magnetic card of the present invention.

FIG. 4 is a longitudinal sectional view of still another embodiment of the magnetic card of the present invention.

FIG. 5 is a vertical cross-sectional view showing an example of a magnetic card having magnetic recording layers on the front and back sides over the entire surface of the card.

FIG. 6 is a vertical cross-sectional view showing another embodiment of a magnetic card having magnetic recording layers over the entire surface of the card on both front and back sides.

FIG. 7 is a vertical cross-sectional view showing still another embodiment of a magnetic card having magnetic recording layers on both front and back sides over the entire surface of the card.

[Explanation of symbols]

 1 Magnetic Card 3 Magnetic Recording Layer 4 Concealing Layer 9 Magnetic Recording Layer 10 Concealing Layer

Claims (2)

[Claims] 1. A magnetic card, wherein a magnetic recording layer is provided over the entire surface of the card, and the entire surface of the magnetic recording layer is covered with a concealing layer. 2. The magnetic recording layer comprises a binder containing a vinyl chloride-vinyl acetate copolymer and polyurethane in a ratio of 0: 100 to 30:70, and magnetic powder, and binder: magnetic powder = 20: 80. The magnetic card according to claim 1, wherein the magnetic card comprises a magnetic composition contained in a ratio of about 40:60.