JPH056255B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to magnetic cards such as credit cards and bank cash cards.

[Prior Art] This type of magnetic card is constructed by covering the surface of a core sheet made of opaque synthetic resin with a transparent oversheet, and has a magnetic layer for storing required information. ing. This magnetic layer is usually provided on the oversheet, while patterns such as pictures are printed on the core sheet. Therefore, in conventional magnetic cards, the magnetic layer and the pattern are provided independently of each other.

[Problems to be Solved by the Invention] However, in conventional magnetic cards, the color of the magnetic layer cannot be made into a color other than brownish-brown, and the magnetic layer is provided on an oversheet. It was inevitably visible from the outside, and it was impossible to improve the appearance from a design standpoint.

In order to solve the above-mentioned problems, for example, a method has been proposed in which a colored layer is provided on the magnetic layer and the colored layer hides the magnetic layer to enhance its decorative effect.

However, even in this method, the colored layer is only monochromatic, and no significant decorative effect can be expected.

Furthermore, by providing various layers such as the colored layer, the layer thickness between the magnetic layer and the magnetic head increases,
Another problem has arisen in that the magnetic properties deteriorate.

[Means for Solving the Problems] The present invention was devised in view of the above-mentioned problems, and the present invention has been devised in view of the above-mentioned problems. A dyeable film layer of a sublimable dye is provided on the colored layer, and a material constituting the dyeable film layer of the sublimable dye, for example, a polyester resin, is dyed with the sublimable dye, thereby creating a magnetic field. A new magnetic card has been discovered in which a colored layer and arbitrary colored patterns such as letters, designs, etc. are formed on the layer in accordance with the diversification of information.

That is, the present invention provides a method of sequentially forming a magnetic layer and a dyeable film layer of a sublimable dye, or a magnetic layer, a colored layer, and a dyeable film layer of a sublimable dye on at least a portion of a thermoplastic synthetic resin substrate. In this magnetic card, the surface of the film layer is flush with the surface of the synthetic resin substrate, and the film constituting the film layer is further provided with a colored pattern layer using a sublimable dye.

[Function] In the magnetic card of the present invention, the dyeable film layer of the sublimable dye is dyed into the film to form a colored pattern. Compared to adhesion-formed colored pattern printing, there is no need to provide a separate protective layer for the colored pattern, and the film layer itself has excellent durability against friction and heat caused by contact with a magnetic head or the like. This means that the layer thickness between the magnetic layer and the magnetic head is the cause of deterioration of magnetic properties, but sublimable dyes themselves have smaller particle sizes than pigments and can be made thinner. Does not affect magnetic properties.

[Example] The present invention will be described in more detail below using the drawings. First, the structure of the magnetic card of the present invention will be explained with reference to the drawings.As shown in FIG. have.

As shown in Figure 2 A and B, the magnetic card 1 is
It is constructed by covering the surface of a core sheet 1a made of an opaque synthetic resin such as polyvinyl chloride with transparent oversheets 1b made of the same material. On the other hand, the portion 2 consists of a magnetic layer 3 and a sublimable dye dyeable film layer 5 [FIG. 2A], or a magnetic layer 3, a colored layer 4, and a sublimable dye dyeable film layer 5 [FIG. 2A]. (b)] arranged sequentially from the inside to the outside. Dyeable film layer 5 of sublimable dye in portion 2
The surface of the magnetic card is made to be flush with the surface of the oversheet 1b of the magnetic card. Note that the colored layer 4 may be composed of two layers depending on the case.

Furthermore, the film constituting the sublimable dye dyeable film layer 5 has a colored pattern layer 6 dyed with a sublimable dye.

The magnetic card described above can be made, for example, by the following method.

That is, as shown in FIG. 3, a magnetic layer 3a is formed by coating an ordinary magnetic paint on a polyester film (thickness: 6 μm) 5a, for example, as a dyeable film layer for a sublimable dye, and then A heat-sealable adhesive layer 7 is formed thereon to obtain a magnetic adhesive sheet A.

Next, in the present invention, after slitting the magnetic adhesion sheet A obtained above to a predetermined width at a predetermined position, the sheet is turned upside down as shown in FIG. The adhesive layer 7 is attached to a predetermined position of the sheet 1b with the surfaces thereof overlapped. The layers 7, 3a, 5a are thus transferred onto the surface of the oversheet 1b.

Next, in the present invention, as shown in FIG. 5, the above-mentioned oversheet 1b having a magnetic layer is laminated together with other oversheets 1b to the core sheet 1a at a predetermined position, and then they are hot pressed to form a magnetic layer. A layer, etc. is embedded in a base material.

On the other hand, in the present invention, as shown in FIG. 6, an ink composition containing a sublimable dye is used on the base sheet 8, and this is printed by a normal printing method to form characters, designs, etc. A transfer sheet B is formed by forming an arbitrary printed pattern 9 such as the above, and this is superimposed on the surface of the dyeable film layer 5a of the sublimation dye of the heat-pressed magnetic card, for example, at 180°C.
Heat and pressurize at ~200℃, 40-60 seconds, 2-3Kg/ ^cm2 ,
After that, the base sheet 8 of the transfer sheet B is peeled off. As a result, the sublimable dye in the printed pattern 9 of the transfer sheet B is transferred to the dyeable film layer 5a of the sublimable dye in the card base material, and the dye is dyed into the film. , forming a colored pattern layer 6a.

In addition, if a transfer sheet is used in which a layer made of an ink composition containing a sublimable dye is formed on the entire surface of the base sheet 8, this is superimposed on the surface of the sublimable dye-dyeable film layer of a hot-pressed magnetic card.
Any pattern can be transferred onto each card using a thermal head or the like.

Next, the core sheet 1a and the oversheet 1b
The magnetic card shown in FIGS. 1 and 2A is obtained by punching out the material to a predetermined size.

In the magnetic card made in this way, as shown in FIG. 6 becomes flush with the front of the card.

Note that the layer 7 is not necessary if the layer 3a itself has adhesive properties, and the adhesive layer 7 may be provided when the layer 3a has poor adhesive properties.

Furthermore, in the above, known transfer sheets can be used as the transfer sheet.

In addition, in the case of the magnetic card shown in FIG. 2B in the present invention, in the above method, as shown in FIG. By using the magnetic adhesion sheet C on which the layer 4a is formed and carrying out the same procedure as described above, the magnetic card shown in FIG. 2B can be obtained.

In the above, the colored layer 4a can be formed by, for example, gravure printing using an ink composition containing an acrylic resin as a vehicle.

The colored layer 4a can be printed, for example, by printing several times at a plate depth of 40 to 50 .mu. using a gravure ink that is highly opaque in a desired color such as white or the like. Therefore, in the present invention, the magnetic layer 3a is replaced with the colored layer 4a.
It is something that can be hidden.

In the magnetic card of the present invention, if necessary, an oversheet layer may be formed on the surface of the sublimable dye dyeable film layer having a colored pattern layer.

[Effects of the Invention] The magnetic card of the present invention can produce an extremely beautiful colored pattern by dyeing the sublimable dye film layer on the magnetic layer. .

In addition, in the magnetic card of the present invention, if the material constituting the sublimable dye dyeable film layer is different from the material constituting the magnetic card body, the film layer is provided only directly above the magnetic layer. In this case, since it is possible to dye only the film, a colored pattern such as an arbitrary picture can be provided at an accurate position without deviation, and the position of the magnetic layer can also be clearly indicated. Furthermore, if the film layer is provided in a region other than directly above the magnetic layer, it is advantageous to make it difficult to discern the presence of the magnetic layer.

Furthermore, since the outermost dyeable film layer of the sublimable dye is flush with the card, there is no problem in handling the card.

Furthermore, compared to the colored pattern layer formed by conventional printing using conventional pigment ink, the colored pattern layer itself of the magnetic card of the present invention serves as a highly durable protective layer, and for this purpose, the layer thickness can be reduced. Since it can be made thin as a whole, the magnetic properties will not be affected.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the magnetic card of the present invention, Fig. 2 A and B are enlarged partial cross-sectional views taken along the - line in Fig. 1, and Figs. FIG.
7 to 7 are cross-sectional views. DESCRIPTION OF SYMBOLS 1...Magnetic card, 3...Magnetic layer, 4...Colored layer, 5...Stainable film layer of sublimable dye.

Claims (1)

[Claims] 1 At least a portion of the thermoplastic synthetic resin substrate,
A magnetic layer and a sublimable dye dyeable film layer, or a magnetic layer, a colored layer, and a sublimable dye dyeable film layer are formed in this order, and the surface of the film layer is flush with the surface of the synthetic resin substrate. A magnetic card in which the film constituting the film layer is further provided with a colored pattern layer containing a sublimable dye.