JPH08169192A - Information recording card - Google Patents

Abstract

PURPOSE: To obtain a high security-ensured forgery-proof card by forming an infrared beam reflective layer of different patterns, and accumulating information relative to a pattern formed on the infrared beam reflective layer in a magnetic layer, and at the same time, providing a background figured layer on an outer side than a concealed layer. CONSTITUTION: A magnetic layer 30 consisting of barium ferrite is formed on a base material 10 of polyester film, and an infrared beam absorptive layer 30 is applied entirely on a card by applying ink containing carbon black. In addition, an infrared beam reflective layer 40 consisting of different patterns is formed using titanium oxide ink on the infrared beam absorptive layer 30. Moreover, ink comprising an organic black dye, a color developer and a near infrared absorptive dye is applied to the surface of the infrared beam reflective layer 40 to form a concealed layer 50. Next, titanium oxide ink is used on the concealed layer 50 to form a background figured layer 60. On the other hand, a vinyl chloride/vinyl acetate copolymer solution is applied to the surface of the background figured layer 60 to form a protecting layer 70.

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]

[Prior Art and Problems to be Solved by the Invention]
Cards used for boarding tickets, commuter tickets, credit cards, prepaid cards, etc. have a recording layer for recording various information on a base material such as paper or plastic. 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, an infrared reflecting layer, and a concealing layer, and the infrared reflecting layer comprises a plurality of layers. Of different patterns, the magnetic layer stores information related to the pattern formed on the infrared reflective layer,
Further, the information recording card has a tint block layer outside the concealing 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.

The present invention will be described in detail below. The infrared reflective layer is composed of a plurality of different patterns, and the patterns are composed of dots, lines, characters, marks and other arbitrary figures, and the shape thereof is not particularly limited. Further, the pattern provided on the tint block layer is also not limited to a particular shape, including dots, lines, characters, marks, and other arbitrary figures. The pattern provided on the tint block pattern may be a plurality of different patterns or the same pattern.

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 Fe ₃ O ₄ , CrO ₂ and γ-F.
e ₂ O ₃ , Co deposition γ-Fe ₂ O ₃ , Fe, Fe-C
r, Fe-Co, Co-Cr, Co-Ni, MnAl,
It can be formed by dispersing known magnetic fine particles such as barium ferrite and strontium ferrite in a suitable resin or ink vehicle and applying the dispersion 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 reflective layer can be formed by vapor deposition or sputtering of a non-magnetic metal, or by coating 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, after printing a design on the left side of the base material, a method of sequentially printing different designs from the left side to the right without overlapping the design, a method of printing a design, and then repeatedly printing different designs on the design, After printing an arbitrary number of designs at predetermined intervals, repeat printing different designs without overlapping the design,
There is a method of filling the predetermined interval 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.

The copy-forgery-inhibited pattern layer is formed by printing the ink or the like used in the infrared reflective layer at a print density that does not affect the infrared information formed in the infrared reflective layer. The printing method may be offset printing, gravure printing, or the like, but is not particularly limited.

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, a tint block layer 60, and a protective layer 70 are sequentially provided on the base material 10. When infrared rays are radiated from the protective layer 70 side, the infrared rays pass through the tint block layer 60 and the concealing layer 50, part of which is reflected by the infrared reflecting layer 40, and the other part of which 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 determination 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 the 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.

[0020]

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.

By providing a concealing layer for concealing visible light and a tint block layer having a pattern drawn on the outer side of the concealing layer, the security performance is enhanced so that the optical identification portion cannot be visually recognized. There is. Further, since the tint block layer can be made thinner than the masking layer, it is possible to reduce the thickness of the masking layer and improve the magnetic characteristics.

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.

[0023]

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 show a plurality of plates formed by using the plate cylinder shown in FIGS. FIG.

A magnetic layer 20 made of barium ferrite is formed on a polyester film substrate 10 having a thickness of 188 μm.
The infrared absorbing layer 30 having a thickness of 0 μm and having a thickness of 1 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 tint block layer 60 having a pattern of 0.5 μm was formed on the hiding layer 50 using titanium oxide ink. A protective layer 70 was formed by applying a solution of a vinyl chloride / vinyl acetate copolymer on the tint block layer 60 to a thickness of 2 μm.

In the offset printing machine shown in FIG. 3, an in-feed roll 200 for supplying a material 100 to be printed, which is a polyester film base material, an out-feed roll 300 for winding the material 100 to be printed, an in-feed roll 200 and an out-feed roller. 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. Also, plate cylinder 5
10 is provided with an ink roll 520 that supplies ink to 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 comes into contact with the ink stored in the ink pan 530, and then transfers the ink onto 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 continuously arranged in the longitudinal direction from left to right in the width direction, and if the symbols are 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 a plate cylinder used in a method of printing different designs repeatedly after printing the designs. Plates 510 to 503 are provided on the plate cylinder 510 in a circumferential shape. Similarly, the plates 601 to 6 are displayed on the plate cylinder 610.
04 are provided circumferentially, and the plate 710 has plates 701-7.
05 are provided circumferentially, and the plate cylinder 810 further includes the plate 8
01 to 806 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.

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 a configuration of a plate cylinder used in a method of printing different patterns repeatedly without overlapping the patterns and filling the predetermined intervals with the patterns. The plate cylinder 610 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.

If the pattern shown in FIG. 9 is cut into a group of symbols composed of four different symbols, information having an infrared reflection layer composed of a plurality of different symbols, which are composed of symbols which do not match each other. A 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, the reflection intensity was binarized at a predetermined slice level, and converted into a digital signal. The obtained digital signal was recorded on the magnetic layer 20.

The card reader used for the information recording card of the present invention comprises optical information detecting means for irradiating infrared rays and detecting reflected light, magnetic information detecting means for reading information recorded in the magnetic layer 20, and the above two. When the information judging means for comparing the information detected by the detecting means and the information judging means are within a predetermined error range, the information judging means judges as true, and when it is out of the range, it judges as false. 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.

Furthermore, when the information recording card of the present invention was seen through, it was not possible to visually confirm the presence of the optical discriminating portion consisting of the infrared absorbing layer and the infrared reflecting layer.

[0041]

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.

2 shows a waveform of reflected light obtained when the information recording card shown in FIG. 1 is irradiated 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 an example of the structure of a plate cylinder.

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

FIG. 6 shows an example of the configuration of a plate cylinder different from those 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 Background Pattern Layer 70 Protective Layer 100 Printed Layer 200 Infeed Roll 300 Outfeed Roll 400 Impressor 500 Blanket Roll 510 Plate Cylinder 520 Ink Roll 530 Ink Pan 501 plate

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G07F 7/08

Claims (2)

[Claims] 1. An information recording card in which a base material is provided with at least a magnetic layer, an infrared absorbing layer, an infrared reflecting layer, and a concealing layer, wherein the infrared reflecting layer comprises a plurality of different patterns, and the magnetic layer is formed on the magnetic layer. Is an information recording card, which stores information relating to a pattern formed on an infrared reflection layer, and has a tint block layer outside the concealment layer. 2. The information stored in the magnetic layer is recorded as digital information obtained by converting information relating to a pattern formed on the infrared reflective layer according to a certain rule. Information recording card.