JPH04191098A - Magnetic card - Google Patents

Abstract

PURPOSE:To make it possible to use the entire surface of magnetically recordable layer side of a magnetic card as a printing surface by providing a magnetically recordable layer entirely on the surface of an anchor layer of a substrate, and further, providing a shielding layer which shields the stained color of the magnetically recordable layer on a protecting layer. CONSTITUTION:A magnetic card 10 is formed by thermally depositing three layers which are substrates 11, 12, 14 of vinylchloride sheet under pressure. In addition, an anchor layer 24, a magnetically recordable layer 21, a silver layer 22 which is a silver- colored shielding layer and a white layer 23 which is a white shielding layer are laminated sequentially on one surface of the substrate 11 of the magnetic card 10. The silver layer 22 and the white layer 23 shield the color veins of the magnetically recordable layer 21. In addition, characters and designs 31 and their print protecting layer 13 are printed sequentially on the top layer. Subsequently, printing the entire surface is possible, and making a design on a wider scale is feasible. Either of the silver layer 22 or the white layer 23 can be used as the shielding layer depending on purpose. Characters and designs 32 are printed on one surface of the substrate 12, and the substrate 14, using a transparent sheet, protects printed characters and designs 32.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to magnetic cards having a magnetic recording layer, such as credit cards, bank cards, and train tickets.

(Prior Art) Magnetic cards, which are formed by hot-pressing two or more layers of vinyl chloride sheets and have a magnetic recording layer, are widely used as credit cards, bank cards, food and drink tickets, fuel supply circles, shopping circles, etc. There is.

The magnetic recording layer of conventional magnetic cards is called a magnetic stripe, and is formed by transferring the magnetic layer on PET (polyethylene terephthalate) tape, etc. when hot-pressing two or more layers of vinyl chloride sheets. .

The outline of its configuration is shown in FIG. Conventional magnetic card 10
consists of a vinyl chloride sheet base 11 and ]2 on which characters, designs, etc. 31 and 32 are printed, respectively, a transparent vinyl chloride sheet base 14 through which these characters, designs, etc. 31 and 32 can be seen, and a magnetic stripe 21. .

Therefore, this magnetic stripe 21 allows characters, designs, etc.
The printing surface of 1 is limited, and the degree of freedom of design is also limited, and the degree of freedom of design is also limited, which hinders high design quality.

Furthermore, this magnetic stripe is relatively expensive, and alignment during transfer formation is difficult, so improvements have been desired in terms of material costs and production costs.

(Problems to be Solved by the Invention) The purpose is to provide a new method for applying a magnetic recording layer that is superior in material cost and productivity as an alternative to magnetic stripes, and prints the entire surface of the magnetic recording layer side of a magnetic card. The purpose is to enable it to be used on surfaces.

(Means for Solving the Problems) 'The present invention provides a magnetic card formed by hot pressing two or more layers of vinyl chloride sheets and having a magnetic recording layer.
In order to increase the adhesion between the vinyl chloride sheet and the magnetic recording layer and further prevent peeling and chipping of the magnetic recording layer, an anchor coating agent is applied to the magnetic recording layer-coated surface of the vinyl chloride sheet, and then the magnetic recording layer is coated with an anchor coating agent. A magnetic card is characterized in that a layer is coated on the entire surface of a hinyl chloride sheet in advance, and further has a concealing layer on the magnetic recording layer for concealing the coloring of the magnetic recording layer, and the concealing layer is silver or white. It is a magnetic card with a soil layer or a coating layer consisting of two layers: silver and white.

The present invention will be described in detail below with reference to a sectional view (FIG. 1) of one embodiment.

The magnetic card 10 has a base 11.12 of vinyl chloride sheet.
．． The three layers of No. 14 are press-bonded and heat-sealed by hot pressing, but it is also possible to bond each layer with an adhesive.

The thickness of the magnetic card 10 is determined according to Japanese Industrial Standards (JIS-B).
9560) "Credit card with magnetic stripe", maximum 0.80mm, minimum 0.
．． The range is 68mm.

Therefore, the number of layers and each thickness of the base body 11, 12, 14 are not particularly limited as long as the thickness of the magnetic card 10 is within the above range.

Further, on one surface of the base 11 of the magnetic card 10, an anchor layer 24, a magnetic recording layer 21, a silver layer 22 as a silver-colored hiding layer, and a white layer 2 as a white hiding layer cover the entire surface of the base 11 of the magnetic card 10.
3 are sequentially laminated.

The silver layer 22 and the white layer 23 hide the color of the magnetic recording layer 21, and furthermore, letters, designs, etc. 31 and their printed protective layer 13 are sequentially printed on the upper layer by various printing means, but depending on the purpose, the hiding layer may be a silver layer. 22 or white layer 2
It may be a single layer of either one of 3.

Also, on one side of the base 12, characters are printed by various printing means.
A design, etc. 32 is printed, and a transparent sheet is used as the base 14 to protect the printed characters, design, etc. 32.

Next, the materials of each component will be explained.

Substrates 12.13.14 are vinyl chloride sheets. Here, vinyl chloride refers to a vinyl chloride-based resin, which is mainly composed of a vinyl chloride homopolymer and a vinyl chloride copolymer containing 50% by weight or more of vinyl chloride,
Examples of the copolymer copolymerized with vinyl chloride include vinyl acetate, olefins such as ethylene, and propylene.

Physical properties required for the substrate, such as strength, rigidity, l! !
A preferable material may be selected from among the above-mentioned materials in consideration of the shielding property, etc., and additives such as reinforcing agents, stabilizers, and lubricants may be added as appropriate.

The magnetic recording layer 21 is made of 7-Fe2O3, Co-deposited 7-F
e2O3, Fe3O4, CrO2, Fe, Fe-Cr
, Fe-Co.

A dispersion in which conventionally known magnetic fine particles such as Co-Cr, Co-Ni, MnAL Ba ferrite, and Sr ferrite are dispersed in a suitable resin or ink vehicle can be prepared using conventionally known methods such as the gravure method, roll method, and knife method. It can be formed on the anchor layer 24 by the following coating method. The thickness of the film is 1 to 100μ, preferably 5 to 3μ.
It is about 0μ.

As a resin or ink vehicle for dispersing magnetic fine particles such as γ-Fe20, butyrad resin, vinyl chloride
Vinyl acetate copolymers, urethane resins, polyester resins, cellulose resins, acrylic resins, styrene/maleic acid copolymer resins, etc. are used, and if necessary, rubber resins such as nitrile rubber or urethane elastomers are added. Ru. In addition, a surfactant, a silane coupling agent, a plasticizer, a wax, a silicone oil, a carbon blank, and other pigments can be added as necessary to the dispersion in which magnetic fine particles are dispersed in the resin. .

As the resin used for the anchor layer 24, butylard resin, vinyl chloride/vinyl acetate copolymer resin, urethane resin, polyester resin, cellulose resin, acrylic resin, styrene/maleic acid copolymer resin, etc. are used. A rubber resin such as nitrile rubber or a urethane elastomer may be added as necessary. This resin can be formed on the substrate 11 by a conventionally known coating method such as a gravure method, a roll method, or a knife method.

The thickness of this anchor layer is required to be about 0.1 to 10 μm in order to increase the adhesion between the base 11 and the magnetic recording layer 21 and to prevent the magnetic recording layer 21 from peeling off or missing.

Next, as the silver layer 22, Te, Sn, In, Al
, Bi, Pb, Zn, Fe, Co, Ni, Ag, or an alloy thereof, or a compound of a metal such as Te-carbide, and the white layer 23 is a metal oxide such as titanium oxide, etc. It can be formed on the magnetic recording layer 21 by a vacuum evaporation method, a sputtering method, a plating method, or the like. The liquid layer 22 and the white layer 23 are each formed by dispersing fine particles of the metal, titanium oxide, or other white pigment compound in the appropriate resin or ink vehicle described in the magnetic recording layer 21. The objects can be sequentially laminated by conventionally known coating methods such as the gravure method, the roll method, and the knife method.

The combined thickness of the silver layer 22 and white layer 23 is as thick as possible for the purpose of concealment, and conversely, the distance between the magnetic recording layer 21 and the magnetic node of the reader/writer is made small to increase the signal output voltage. Therefore, it is desirable to make it as thin as possible. Therefore, this thickness is 0.5~2
0μ, preferably 1 to 15μ is required.

(Effects of the Invention) The magnetic card of the present invention does not use a magnetic stripe, but uses a vinyl chloride notebook coated with a magnetic recording layer on the entire surface as one layer of the base, so material costs can be reduced and difficulty in positioning etc. can be reduced. You can improve your productivity by freeing yourself from this.

Furthermore, as a concealing layer for the magnetic recording layer, a white layer and a white layer are sequentially laminated, or either one of them is formed, making it possible to print on the entire surface, which increases the degree of freedom in design.

In addition, since a resin layer is formed as an anchor layer between the substrate and the magnetic recording layer, the adhesion between the substrate and the magnetic recording layer is strong, and the peeling and chipping force of the magnetic recording layer is reduced. It is also possible to improve the poor appearance caused by exposure of the magnetic recording layer caused by peeling off of the engraved portion during use.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the magnetic card of the present invention, and FIG. 2 is a schematic diagram of the configuration of a conventional magnetic card, where (a) is a top view and (b) is a diagonal line TT in figure (a). FIG. Patent Applicant Sumitomo Bakelite Co., Ltd. No. 1 (2) Figure 2 Procedural Amendment (Voluntary) May 22, 1991

Claims (3)

[Claims] (1) A magnetic recording layer is provided on the entire surface of the anchor layer of a substrate made of a vinyl chloride sheet coated with an anchor layer, and a concealing layer is further provided on the protective layer to hide the coloring of the magnetic recording layer. A magnetic card comprising: (2) The magnetic card according to claim 1, wherein the concealing layer consists of a single layer of silver or white, or a double layer of silver and white. (3) The magnetic card according to claim 1 or 2, wherein the hiding layer is a coating layer.