JPH07314962A - Information recording card - Google Patents

Abstract

PURPOSE:To provide an information recording card with excellent security performance which can prevent forgery and alteration. CONSTITUTION:This information recording card is provided with at least a magnetic layer 20, an infrared absorption layer 30 and an infrared reflection layer 40 in a base member 10. The infrared reflection layer 40 consists of plural patterns, and the magnetic layer 20 stores the information related to the pattern formed at the infrared reflection layer 40. This information recording car is also provided with plural security means, so it is possible to prevent forgery and alteration.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forgery-prevented information recording card.

[0002]

2. Description of the Related Art Cards used for boarding tickets, commuter tickets, credit cards, prepaid cards and the like have a magnetic layer for recording various information on a base material such as paper or plastic. is doing. However, the fraudulent act of forging or altering and using these cash-exchangeable cards has become a problem.

Therefore, there is known a method of newly providing an optical identification section on a card in order to judge whether the information recording card is difficult to forge or alter or the authenticity of the card.
However, malicious fraudulent acts of knowing the configuration of the optical identification unit and forging it have also occurred.

An object of the present invention is to provide an information recording card having excellent security performance which can prevent forgery or alteration.

[0005]

The gist of the present invention is an information recording card in which a base material is provided with at least a magnetic layer, an infrared absorbing layer, and an infrared reflecting layer, wherein the infrared reflecting layer has a plurality of different patterns. And an information recording card characterized in that the magnetic layer stores information related to a pattern formed on the infrared reflecting layer. The information stored in the magnetic layer is preferably recorded as digital information obtained by converting information relating to the pattern formed on the infrared reflecting layer according to a certain rule. Further, it is preferable to provide a hiding layer for hiding visible light on the outer side of the infrared reflecting layer.

The design referred to in the present invention is composed of dots, lines, characters, marks and other arbitrary figures, and its shape is not particularly limited.

The base material used in the information recording card of the present invention is a plate-shaped, sheet-shaped or film-shaped material, and its material is polyvinyl chloride, polyethylene, polypropylene, polyimide, polyester, polycarbonate, Plastics such as nylon and acrylic resin, metals such as copper and aluminum, papers such as paper, synthetic paper and synthetic paper can be used alone or in combination as a composite.

The magnetic layer is composed of γ-Fe ₂ O ₃ , Co deposited γ-
_{Fe 2 O 3, Fe 3 O} 4, CrO 2, Fe, Fe-C
r, Fe-Co, Co-Cr, Co-Ni, MnAl,
It can be formed by dispersing, in a suitable resin or ink vehicle, a material selected from known magnetic fine particles such as barium ferrite and strontium ferrite, and coating it on a substrate. Further, a vapor deposition method or a sputtering method may be used.

The infrared absorbing layer is usually 800 to 1200.
What contains the component which absorbs the light beam of nm is used. Examples thereof include carbon black, a material in which an infrared absorbing dye is dispersed in a binder, a resin having a high infrared absorbing property, and a pigment. Further, among the non-magnetic metals, those capable of absorbing infrared rays in the above range may be used. By providing the infrared absorbing layer on the magnetic layer, the surface of the infrared reflecting layer can be made smooth and the contrast of reflected light can be increased.

The infrared reflecting layer can be formed by vapor deposition or sputtering of a non-magnetic metal, or by coating with an ink obtained by dispersing a pigment having a high infrared reflectance in a binder. Further, it may be formed by transferring an ink layer of an infrared reflecting substance.

When an evaporation method or a sputtering method is used to form an infrared reflection layer having a plurality of different patterns, a plurality of masking materials having different patterns may be provided on a base material to perform evaporation or sputtering.

When a coating method using ink or the like is used, it is only necessary to combine plates having different designs. For example, a method of printing a design on the left side of the base material, and then sequentially printing different designs from the left side to the right side without overlapping the design,
After printing the design, a method of repeatedly printing different designs on the design, after printing an arbitrary number of designs at a predetermined interval, and then repeatedly printing different designs without overlapping the design, the predetermined interval There is a method to fill in with a pattern.

As the pigment having a high infrared reflectance, pearl pigment, calcium carbide, titanium oxide, indium oxide and the like can be used. The binder is ethyl cellulose,
Cellulose derivatives such as cellulose acetate, polystyrene,
Styrene resin such as poly-α-methylstyrene, acrylic or methacrylic resin such as polyethyl acrylate and polymethyl methacrylate, rosin ester resin such as rosin and polymerized rosin, polyvinyl acetate resin, vinyl chloride resin, polyester resin , Polyurethane resin, butyral resin, vinyl chloride vinyl acetate copolymer resin, vinyltoluene resin, etc.

The binder is selected according to the printing method,
If necessary, a plasticizer and other additives can be used. Further, instead of the pigment, Zn, Pb, Bi, Al, I
It is also possible to use an ink composed of a metal such as n, Sn, or Te, an alloy thereof, a compound, or an organic dye.

The hiding layer transmits infrared rays and absorbs visible light, for example, process ink, and organic and inorganic pigments such as leuco black dye and carbon black, and dyes in a suitable ratio to the above binder. It is formed by ink or the like mixed in. Furthermore, anthraquinone series,
Near-infrared absorbing dyes such as aminium-based, polymethine-based, diimonium-based, cyanine-based, and organometallic complex-based dyes may be mixed.

An example of the layer structure of the information recording card of the present invention is shown in FIG. A magnetic layer 20, an infrared absorption layer 30, an infrared reflection layer 40, a hiding layer 50, and a protective layer 60 are sequentially provided on the base material 10. When infrared rays are irradiated from the protective layer 60 side, the infrared rays pass through the concealing layer 50, a part is reflected by the infrared reflecting layer 40, and another part is absorbed by the infrared absorbing layer 30.

FIG. 2 shows an example of the waveform of the reflected infrared rays. In the figure, the vertical axis represents the intensity of reflected light, and the horizontal axis represents the scanning direction. Information related to the waveform of reflected light is stored in the magnetic layer. The waveform shown in FIG. 2 may be recorded on the magnetic layer as analog information, but if it is recorded as digital information converted by a certain secret rule, forgery or alteration can be prevented and security can be improved. As a rule for converting into digital information, for example, there is a method of binarizing a signal divided into a large number of sub-areas at a certain slice level, or converting into several hierarchical values.

The authenticity of the information recording card is set in advance by comparing the signal stored in the magnetic layer with the signal generated by the reflected light obtained from the optical discriminating portion including the infrared absorbing layer 30 and the infrared reflecting layer 40. If it is within the range of closeness,
Make the information recording card true. For example, the information recording card is scanned with infrared rays to measure reflected light, and the reflected light is converted into a digital signal according to a predetermined rule. Also,
The digital signal recorded on the magnetic layer is read. The digital signal obtained from the reflected light is compared with the digital signal read from the magnetic layer.

[0019]

The information recording card of the present invention comprises a magnetic layer and an optical identification section composed of an infrared absorption layer and an infrared reflection layer having a plurality of different patterns, and information relating to the optical identification section is recorded on the magnetic layer. Stored in. When the information stored in the magnetic layer and the information obtained from the optical discriminating unit are within the preset range of closeness, the authenticity of the information recording card is determined to be true. The security performance is superior to that of an information recording card in which the information in (1) and the information in the optical identification section are not independently related.

Further, since the information stored in the magnetic layer is recorded as digital information obtained by converting information relating to a plurality of different patterns formed on the infrared reflecting layer by a certain secret rule, security performance is enhanced. . Moreover, since the pattern formed on the infrared reflective layer is a plurality of different patterns, it is difficult to imitate.

Further, since the concealing layer for concealing visible light is provided, the optical discriminating portion cannot be visually recognized, so that the security performance is enhanced.

[0022]

EXAMPLES Examples will be described below, but the present invention is not limited thereto. An example of the layer structure of the information recording card of the present invention is shown in FIG. 1, and when the information recording card shown in FIG. 1 is irradiated with infrared rays, the waveform of the reflected light obtained is shown in FIG. An example of a schematic view of an offset printing machine used is shown, FIGS. 4 to 6 show the structure of a plate cylinder described later, and FIGS. 7 to 9 are a plurality of plates formed by using the plate cylinder shown in FIGS. Shows different patterns.

A magnetic layer 20 made of barium ferrite is formed on a polyester film substrate 10 having a thickness of 188 μm.
An infrared absorbing layer 30 having a thickness of 0 μm and having a thickness of 0 μm was coated on the entire surface of the card with an ink containing carbon black.

On the infrared absorbing layer 30, the titanium oxide ink was used to form the infrared reflecting layer 40 having a plurality of different patterns of 2 μm. The method of forming the pattern will be described later. The concealing layer 5 is formed by coating the infrared reflecting layer 40 with an ink composed of an organic black dye, a color developer, and a near infrared absorbing dye.
0 was formed to 6 μm. A layer in which a vinyl chloride / vinyl acetate copolymer is dissolved is coated on the concealing layer 50 in a thickness of 2 μm to form a protective layer 60.
Was formed.

In the offset printing machine shown in FIG. 3, for example, an infeed roll 200 for supplying a substrate 100 to be printed, which is a polyester film substrate, an outfeed roll 300 for winding the substrate 100, an infeed roll 200 and an outfeed. A drive system (not shown) for driving the impression cylinder 400, the infeed roll 200, the outfeed roll 300, and the impression cylinder 400 is provided between the roll 300 and the roll 300.

Blanket rolls 500, 600, 700 and 800 are sequentially provided facing the impression cylinder 400. Opposed to the blanket roll 500, a plate cylinder 510 having a later-described plate is provided. Further, an ink roll 520 that supplies ink to the plate cylinder 510 is provided so as to face the plate cylinder 510, and an ink pan 530 that supplies ink is provided below the ink roll 520. The blanket rolls 600, 700, 800 also have plate cylinders 610, 710, 810, ink rolls 620,
720, 820 and ink pans 630, 730, 830 are provided. The ink roll 520 is the ink pan 53.
After contact with the ink stored in 0, the ink is transferred to the plate provided on the plate cylinder 510. Further, the ink transferred to the plate is transferred to the blanket roll 500, and a pattern is drawn on the blanket roll 500.

On the other hand, the material to be printed 100 is supplied from the infeed roll 200 and moves on the surface of the impression cylinder 400. The blanket roll 500 rotates and the design is transferred to the printing target 100. Similarly, the plate cylinders 610, 7
The design of the plate provided in 10, 810 is transferred from the blanket rolls 600, 700, 800 to the printing medium 100.

A method for forming an infrared reflective layer having a plurality of different patterns will be described. After printing the pattern on the left side of the base material,
FIG. 4 shows a configuration of a plate cylinder used in a method of printing different designs sequentially from the left side to the right side without overlapping the designs.

The plate cylinder 510 is divided into four equal parts in the width direction, and the plates 501, 502, and 503 are circumferentially provided from the right end to the right ¼. The plate cylinder 610 is 1/4 right in the width direction.
From the center to the center, the illustrations 601 to 604 are provided in a circumferential shape. The plate cylinder 710 is provided with the plates 701 to 705 in a circumferential shape from the center to the right 3/4 in the width direction.
Is from right 3/4 to left end in the width direction.
6 are provided circumferentially. The sizes of all the plates are the same, and the ratio of the diameter of the plate cylinder is 3: 4: 5: 6. A part of the obtained pattern is shown in FIG.

The obtained pattern is a pattern in which four different symbols are continuous in the longitudinal direction from left to right in the width direction, and if each symbol group is cut, the symbols match. An information recording card having an infrared reflection layer composed of a plurality of different patterns, which is composed of a group of non-designs, is obtained.

FIG. 5 shows the construction of the plate cylinder used in the method of printing different designs repeatedly after printing the designs. Illustrations 501 to 503 are provided on the plate cylinder 510 in a circumferential shape. Hereinafter, in the same manner, the plates 601 to
604 are provided in a circumferential shape, and the plate cylinder 710 includes the plates 701 to 701.
705 is provided in a circumferential shape, and furthermore, the plate cylinder 810 is provided with illustrations 801 to 806 in a circumferential shape. The size of all the plates is the same, and the ratio of the diameter of the plate cylinder is 3: 4: 5: 6.
Becomes A part of the obtained pattern is shown in FIG.

By cutting the pattern shown in FIG. 8 in the width direction, an information recording card having an infrared reflection layer composed of a plurality of different patterns, in which a plurality of patterns are overwritten, can be obtained.

After printing an arbitrary number of patterns at predetermined intervals,
FIG. 6 shows the structure of a plate cylinder used for a method of printing different patterns repeatedly without overlapping the patterns and filling the predetermined intervals with the patterns. The plate cylinder 510 has three plates 501, 502, 503 at equal intervals on the surface. The plate cylinders 610, 710, and 810 are also arranged at equal intervals in the plates 601 to 604, 701 to 705, and 801 to 80.
6 is provided. The ratio of the diameters is 3: 4: 5: 6 so that the distance between the plates is the same. The diameter of the blanket roll is the same as the diameter of the opposite plate cylinder. If the number of symbols provided on each plate cylinder is 3, 4, 5, 6 then 60 patterns can be obtained. A part of the obtained pattern is shown in FIG.

When the pattern shown in FIG. 9 is cut into a group of symbols composed of four different symbols, the infrared reflecting layer composed of a plurality of different symbols composed of a group of symbols whose patterns do not match each other is provided. An information recording card is obtained.

The information recording card obtained as described above was scanned with infrared rays having a wavelength of 850 nm. Part of the irradiated infrared rays is absorbed by the infrared absorption layer 30, and the other part is reflected by the infrared reflection layer 40. As a result, an analog signal as shown in FIG. 2 was obtained. In the figure, the vertical axis represents the reflection intensity and the horizontal axis represents the scanning direction.

The obtained analog signal was divided into areas at predetermined intervals in the scanning direction, and the reflection intensity was binarized at a predetermined slice level to be converted into a digital signal. The obtained digital signal was recorded on the magnetic layer 20.

The card reader used in the information recording card of the present invention includes optical information detecting means for irradiating infrared rays and detecting reflected light, magnetic information detecting means for reading out information recorded in the magnetic layer 20, and the above two. The information determining means compares the information detected by the detecting means. In the authenticity determination of the information recording card, the information determining means determines true when the detected optical information and magnetic information are within a predetermined error range, and determines false when the detected information is out of the range.

When the information recording card in which the digital signal is recorded on the magnetic layer 20 is applied to the above-mentioned card reader, it is determined to be true.

[0039]

As described above, since the information recording card of the present invention has a plurality of security means, it is possible to prevent forgery or alteration.

[Brief description of drawings]

FIG. 1 shows an example of a layer structure of an information recording card of the present invention.

FIG. 2 shows a waveform of reflected light obtained by irradiating the information recording card shown in FIG. 1 with infrared rays.

FIG. 3 shows an example of a schematic view of an offset printing machine used in the present invention.

FIG. 4 shows a configuration of an example of a plate cylinder.

FIG. 5 shows a configuration of an example of a plate cylinder different from that of FIG.

FIG. 6 shows an example of the configuration of a plate cylinder different from those shown in FIGS. 4 and 5.

FIG. 7 shows a design obtained by using the plate cylinder shown in FIG.

FIG. 8 shows a pattern obtained by using the plate cylinder shown in FIG.

FIG. 9 shows a design obtained by using the plate cylinder shown in FIG.

[Explanation of symbols]

 10 Base Material 20 Magnetic Layer 30 Infrared Absorption Layer 40 Infrared Reflection Layer 50 Concealment Layer 60 Protective Layer 100 Printed Material 200 Infeed Roll 300 Outfield Roll 400 Impressor 500 Blanket Roll 510 Plate Cylinder 520 Ink Roll 530 Ink Pan 501 Illustration Plate

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Claims (3)

[Claims] 1. An information recording card in which a base material is provided with at least a magnetic layer, an infrared absorbing layer, and an infrared reflecting layer, wherein the infrared reflecting layer has a plurality of different patterns,
An information recording card characterized in that the magnetic layer stores information related to a pattern formed on the infrared reflecting layer. 2. The information according to claim 1, wherein the information stored in the magnetic layer is recorded as digital information obtained by converting information relating to a pattern formed on the infrared reflecting layer according to a certain rule. Recording card. 3. The information recording card according to claim 1, further comprising a hiding layer for hiding visible light outside the infrared reflecting layer.