JP2601140Y2 - Magnetic card - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic card used for a credit card, a cash card or a prepaid card, and more particularly to a magnetic card for preventing unauthorized use.

[0002]

2. Description of the Related Art In general, a magnetic recording layer of this type is formed by coating a magnetic recording layer on a thin plate-shaped substrate made of polyvinyl chloride or the like and having a rectangular shape in plan view, and displaying designs and patterns on upper and lower surfaces. The printed layer is printed. The magnetic recording layer is provided with a recording section in which magnetic information is recorded in a stripe shape on one side of the card along the card reading direction. Then, punch holes are punched in the card according to the frequency of use, and the punch holes serve as a measure of the remaining frequency, and also function to prevent unauthorized use of the used card.

[0003]

However, in the above-described structure for preventing unauthorized use using punch holes, the punch holes are filled with the same material as the card, for example, the same type of card, and the punch holes are filled. The recording section, writing new magnetic information as a fraudulent recording section in a portion that is symmetrical with respect to the center line along the direction in which the magnetic recording section is read, and inserting a card with the front and back reversed in the reading direction, There was a drawback that the illegal use of reverse insertion could not be prevented.

Accordingly, the present invention has been made in view of the above-mentioned conventional disadvantages, and an object of the present invention is to provide a magnetic card which prevents unauthorized use by reverse insertion.

[0005]

In order to achieve this object, a magnetic card according to the present invention has a magnetic recording layer provided on a base material, and the magnetic recording layer is protected by a protective layer. A magnetic card provided with a magnetic recording portion on which magnetic information is recorded in a layer, wherein a groove is formed in a protective layer at a position substantially symmetrical with the magnetic recording portion with respect to a center line along a direction in which the magnetic recording portion is read. Are provided, and the cross section of the concave fitting portion is formed in a substantially wedge shape.

[0006]

According to the present invention, when an attempt is made to read the magnetic information of the unauthorized recording section by inserting the paper in the reverse direction, an abnormal output is generated by the recessed portion. Further, when trying to embed the concave fitting portion, it is difficult to completely bury the concave fitting portion because the concave fitting portion has a substantially wedge-shaped cross section.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of the magnetic card according to the present invention, and FIG. 2 is a sectional view taken along the line II-II of FIG. Numeral 1 denotes a magnetic card. The magnetic card 1 is formed by coating a magnetic recording layer 3 on a thin plate-shaped base material 2 made of polyvinyl chloride or the like and having a rectangular shape in plan view, and displays designs and patterns on upper and lower surfaces. The printed layer 4 is printed and further protected by a protective layer 5.

On the magnetic recording layer 3, a magnetic recording portion 6 formed in a stripe shape along a card insertion direction, ie, a card reading direction A, which is not shown, is provided on one side of the magnetic card 1. It is provided on the unit side. 7
Is a through hole penetrating through the front and back of the magnetic card 1 and is a denomination discriminating hole which is previously formed by changing the position in the area 9 in accordance with the denomination of the card. Reference numeral 8 denotes a punch hole, which is punched in the area 10 by the punch unit of the card reader device in a number corresponding to the amount of money used or the number of uses.

A portion 11 symmetrical with respect to the center line C of the card along the card reading direction A with the magnetic recording portion 6 includes:
A plurality of concave fitting portions 12, which are groove-shaped cut portions that are perpendicular to A, are provided. As shown in detail in FIG. 2, the concave fitting portion 12 has a substantially wedge-shaped cross section, and the protective layer 5 and the printing layer 4 of the card have a thickness of 0.002 to 0.01.
mm, the thickness of the magnetic recording layer 3 is 0.005 to 0.02 m
m, the thickness of the base material 2 is 0.15 to 0.2 mm, and the thickness of the entire card is about 0.2 mm.
Has a depth of 0.01 to 0.05 mm and reaches the magnetic recording layer 3. Therefore, part or all of the magnetic recording layer 3 corresponding to the concave fitting portion 12 is removed.

[0010] Next, a case will be described in which improper reverse insertion is performed with the magnetic card having the above-described configuration. In order to perform the wrong insertion, the same magnetic information as the magnetic information written in the magnetic recording unit 6 is written in the portion 11, and the illegal recording unit 11 is provided. In this state, when the card is inserted back into the card reader device, that is, when the card is inserted into the card reader device from the direction opposite to the direction A, the concave fitting portion 12 reaching the magnetic recording layer 3 is provided. The data output of the magnetic information of the unauthorized recording unit 11 is detected as a smaller value indicated by a solid line in FIG. 3B than the value shown in FIG. The reading unit of the card reader device detects the abnormal value and stops reading the data.

Therefore, the magnetic recording layer 3, printing layer 4, and protective layer 5 of the other card are cut off, and these cut pieces are embedded in the recessed portion 12, so that the unauthorized recording portion 11 is in the same state as the magnetic recording portion 4. However, since the concave fitting portion 12 has a complicated shape with a substantially wedge-shaped cross section, it is extremely difficult to make the same state as the magnetic recording portion 4. Normally, when the thickness of the cut piece of the magnetic recording unit 4 is large, it is detected as an increased output indicated by a broken line in FIG. 3B, and when the thickness of the cut piece of the print layer 4 and the protective layer 5 is large. Is detected as an attenuation output and detected as an abnormal value.

In this embodiment, the recess 12 is formed before reaching the magnetic recording layer 3 and part or all of the magnetic recording layer 3 is removed. However, the present invention is not limited to this. Even when the concave fitting portion 12 is formed only in the protective layer 5 including the layer 4, the cut pieces of the printing layer 4 and the protective layer 5 are embedded in the concave fitting portion 12, and the unauthorized recording portion 11 is made the same as the magnetic recording portion 4. It becomes extremely difficult to set the state, and if the buried state is a little incomplete, it is detected as an increased output, and if too many cut pieces are buried from the concave fitting portion 12 and attenuated, the attenuation output becomes higher. And trying to remove this bulge,
If the file is shaved off with a file or the like, the protective layer 5 around the concave fitting portion 12 is also shaved off, and as a result, it is detected as an increased output.

[0013]

[Effects of the Invention] As described above, the present invention is applied to the base material.
Is provided with a magnetic recording layer, and the magnetic recording layer is protected by a protective layer.
The magnetic recording section that has recorded magnetic information on the magnetic recording layer
A magnetic card provided, the magnetic recording unit being read.
About the center line along the direction
Since the concave portion was provided in the protective layer at
Write the same magnetic information as the magnetic recording
Even if you try to insert it in the reverse direction,
It is extremely difficult to reproduce in one state,
More than power is detected, and unauthorized use can be detected
Becomes Further, the cross-sectional shape of the concave fitting portion is substantially wedge-shaped.
As a result, it becomes difficult to embed the recessed part, thus preventing unauthorized use.
It becomes possible. Also, when the concave fitting part is formed in a groove shape,
In both cases, the provision of a plurality of
Security layer because the recording layer is only slightly exposed
Is excellent. Also, by printing on the front and back of the magnetic card
The formed design or pattern will temporarily span the recess
Even if there is a nose, the design and pattern will be
There is no such thing as not being able to be recognized. In addition,
The appearance on the protective layer is not impaired.

[Brief description of the drawings]

FIG. 1 is a plan view of a magnetic card according to the present invention.

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

FIG. 3 is a diagram showing a data output state of a magnetic card;
(A) shows a normal state, and (b) shows an abnormal state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic card 2 Base material 3 Magnetic recording layer 4 Printing layer 5 Protective layer 6 Magnetic recording part 7 Denomination identification hole 8 Punch hole 11 Illegal recording part 12 Concave part

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Osamu Sato 3-3-3 Toyosu, Koto-ku, Tokyo Inside NTT Data Communication Co., Ltd. (72) Toshio Kuroi Toyosu Toyosu, Koto-ku, Tokyo NTT Data Communication Co., Ltd. (72) Inventor Takayuki Kamada 3-3-3 Toyosu, Koto-ku, Tokyo NTT Data Communication Co., Ltd. (72) Inventor Teiichi Isshiki 1-5-1, Taito, Taito-ku, Tokyo Tokyo Magnetic Printing Co., Ltd. (72) Inventor Masayuki Hatano 1-5-1-1, Taito, Taito-ku, Tokyo Tokyo Magnetic Printing Co., Ltd. (56) Reference Reference JP-A-3-272071 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B42D 15/10 501 B42D 15/10 551 G06K 19/06 G06K 19/10 G11B 5/80

Claims (1)

(57) [Scope of request for utility model registration] 1. A magnetic card comprising: a magnetic recording layer provided on a base material; a magnetic recording portion in which the magnetic recording layer is protected by a protective layer and magnetic information is recorded on the magnetic recording layer; A plurality of groove-like concave portions are provided in the protective layer at a position substantially symmetrical with the magnetic recording portion with respect to a center line along a direction in which the magnetic recording portion is read, and a cross-section of the concave fitting portion has a substantially wedge shape. A magnetic card characterized by being formed.