JP2002283696A - Forgery preventive card - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a card which can be effectively prevented from a forgery by a copier or a scanner, and can be manufactured at a low cost. SOLUTION: The card comprises a first print layer 6 provided on the front surface side of a transparent or translucent core layer 1, and a second print layer 7 provided on the rear surface side of the layer 1. Thus, a pattern utilizing a binocular parallax is formed by the first and second print layers 6 and 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention is used as a credit card, cash card, membership card, etc.
The present invention relates to a forgery prevention card which can effectively prevent counterfeiting by a copying machine or a scanner and can be manufactured at low cost.

[0002]

2. Description of the Related Art As a card capable of effectively preventing forgery by a copying machine or a scanner, a card having a hologram pattern formed on the surface thereof is known.

[0003]

However, this type of card has a problem that the material cost is high and the complicated processing technique is required, so that the manufacturing cost is high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to prevent counterfeiting by a copying machine or a scanner effectively and to make it possible to manufacture at low cost. To provide a new card.

[0005]

In order to achieve the above-mentioned object, the invention according to claim 1 includes a first printing layer provided on a surface side of a transparent or translucent core layer, and a first printing layer provided on a surface side of the core layer. A second printing layer provided on the back side, wherein a pattern using binocular parallax is formed by the first and second printing layers. is there.

According to a second aspect of the present invention, in the anti-counterfeit card of the first aspect, the second printed layer is formed in the same or similar shape as the first printed layer and the first printed layer is formed. It is characterized in that a pattern having a three-dimensional effect is formed by being arranged so as to overlap with the layer.

According to a third aspect of the present invention, in the anti-counterfeit card according to the first aspect, a pattern having a three-dimensional effect is formed by forming the second print layer with a brilliant ink. It is characterized by.

According to a fourth aspect of the present invention, in the anti-counterfeit card according to the first aspect, the second print layer is arranged so as not to overlap with the first print layer, so that a pattern having a perspective is provided. Is formed.

According to a fifth aspect of the present invention, in the anti-counterfeit card of the first to fourth aspects, the first printing layer and the second
Is characterized in that the interval in the thickness direction of the printed layer is 0.20 to 0.84 mm.

[0010] According to the invention of claim 6, the first printing layer provided on the front side of the transparent or translucent core layer and the second printing layer provided on the back side of the core layer are provided. A forgery prevention card having a moire generated by the first and second printed layers and changing the moire by changing a viewing angle.

According to a seventh aspect of the present invention, in the anti-counterfeit card according to the sixth aspect, the second print layer is formed in the same pattern as the first print layer, and the second print layer is formed on the first print layer. On the other hand, it is characterized in that it is formed so as to be shifted from the plane direction by 0 to 30 °.

The invention of claim 8 is the forgery prevention card according to claim 6, wherein one of the first printing layer and the second printing layer is formed from a moire pattern forming portion having a predetermined shape and a background portion. The moiré pattern forming unit is characterized in that the moiré pattern of the predetermined shape is formed by one of the second print layer and the other of the first print layer.

According to a ninth aspect of the present invention, in the anti-counterfeit card of the eighth aspect, the moiré pattern forming portion is formed by the same pattern as the background portion and the other printed layer, and the background portion and the other portion. Is formed so as to be shifted from the print layer by 0 to 30 ° in the plane direction.

The invention of claim 10 is the invention of claims 6 to 9
In the anti-counterfeit card, the distance between the first printed layer and the second printed layer in the thickness direction is 0.20 to 0.84 mm.
It is characterized by being.

[0015] The invention of claim 11 is the invention of claims 1-1.
0, the concealing layer is provided on the back side of the core layer, and the second printing layer is provided on the back side of the concealing layer so as to be located in the same plane as the back side printing layer. It is characterized by.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a first embodiment of the present invention, and FIG. 2 is a diagram schematically showing a cross-sectional structure of the card of FIG.

This anti-counterfeit card is a magnetic card, and has a magnetic stripe S on its surface as shown in FIG. As shown in FIG. 2, this card comprises a core layer 1 composed of two transparent or translucent resin sheets 1a, 1a, a first oversheet laminated on the surface side thereof and composed of a transparent or translucent resin. A second oversheet layer 3 laminated on the back side of the layer 2 and the core layer 1 and made of a transparent or translucent resin, laminated on the back side of the core layer 1 via a concealing layer 4 and made of a transparent or translucent resin And a protective layer 5.

Although the material of the resin forming these layers is not particularly limited, for example, polyvinyl chloride resin, polyester resin or the like can be used. Also,
Although the thickness of these layers is not particularly limited, in the present embodiment, the core layer 1 has a thickness of 0.56 mm, and the first and second layers have a thickness of 0.56 mm.
Are 0.10 mm, the concealing layer 4 is 0.004 mm, and the protective layer 5 is 0.003 mm.

A first printing layer 6 is provided between the core layer 1 and the first oversheet layer 2, and a second printing layer 7 is provided between the core layer 1 and the second oversheet layer 3. Is provided. The first printing layer 6 and the second printing layer 7 form a pattern which is a design of a card, and are formed in the same shape and the same size.
They are arranged so as to overlap in the thickness direction.

The concealing layer 4 is provided for an optical sensor of a card reader / writer to detect a card, and is formed by printing or the like. In the present embodiment, the concealing layer 4 is provided over the entire surface of the card, but may be provided at least on a portion detected by the optical sensor. In addition, a backside printing layer 8 is provided between the concealing layer 4 and the protective layer 5, and the backside printing layer 8 includes information such as the name of a card issuing company and notes. In the second oversheet layer 2, personal information such as a name and a card number is formed by embossing from the surface.

When the card thus configured is observed from the front side, the first printed layer 6 and a part of the second printed layer 7 positioned under the first printed layer 6 are visually recognized, and the binocular parallax is obtained. Is recognized as a three-dimensional pattern. That is, since the left and right eyes of the human see the symmetrical object from different angles, the degree of overlap between the first printed layer 6 and the second printed layer 7 differs between when viewed with the left eye and when viewed with the right eye, If the images seen by the left and right eyes are combined into one image by the brain, it will be recognized as a three-dimensional image. In order to reliably obtain such a three-dimensional effect, the first print layer 6 and the second print layer 6 are required.
The interval in the thickness direction of the printed layer 7 is 0.20 to 0.84 mm
It is preferable to set to about. This is because if it is smaller than 0.20 mm, a three-dimensional image cannot be obtained, and if it is larger than 0.84 mm, the thickness of the magnetic card does not easily fall within the standard value.

When this card is forged using a copying machine or a scanner, the second print layer 7 located below the first print layer 6 cannot be copied, and the forged card forms a design. The pattern does not become three-dimensional, and it can be easily identified that it is not genuine.

The first and second printing layers 6, 7 can be formed by offset printing, silk printing, or the like.
This card can be manufactured at a lower cost than a card having a hologram pattern.

In the above-described embodiment, the second print layer 7 has the same shape and the same size as the first print layer 6 and is arranged so as to overlap the first print layer 6 in the thickness direction, thereby providing a three-dimensional effect. Although a certain pattern is formed, the second
Even if the printed layer 7 is formed in a shape similar to that of the first printed layer 6 and is arranged so as to overlap with the first printed layer 6, a pattern having a three-dimensional effect can be formed. Further, the second print layer 7 is formed of a brilliant ink, and the first print layer 6 is formed.
Is projected on the second print layer 7, a pattern with a three-dimensional effect can be formed.

The brilliant ink has a so-called metallic feeling by adding a metallic luster powder to a colored ink. The metallic luster powder is blended in the ink to impart a metallic feeling. Specific examples include metal flakes such as aluminum flakes, nickel flakes, titanium flakes, alloy flakes such as stainless steel and brass. Flakes. Among them, aluminum flake is preferable in consideration of glitter and cost performance. Commercially available metallic powders can also be used, and examples thereof include aluminum paste manufactured by Toyo Aluminum Co., Ltd., and aluminum paste manufactured by Showa Aluminum Powder Co., Ltd. The metallic powder may be used alone or in combination of two or more. In addition, known metallic glossy inks such as offset inks and gravure inks used in general printing can also be used as the metallic material.

When the second printing layer 7 is arranged so as not to overlap the first printing layer 6 in the thickness direction, a pattern having a perspective is formed by the first printing layer 6 and the second printing layer 7. It is formed. Also in this case, the forgery prevention effect as described above can be obtained.

Next, a second embodiment of the present invention will be described. FIG. 3 is a plan view of a second embodiment of the present invention.
FIG. 5 is a diagram schematically illustrating a cross-sectional structure of the card of FIG. 4. Note that, in the present embodiment, portions corresponding to those of the above-described first embodiment are denoted by the same reference numerals, and descriptions of the same portions are omitted.

In this embodiment, the second print layer 7 includes a moire pattern forming portion 7a having an alphabetical A shape,
And a surrounding rectangular background portion 7b. The background portion 7b is formed of a regular line-shaped pattern, and the moire pattern forming portion 7a is formed of a line-shaped pattern having the same pitch and area ratio as the background portion 7b.
Is formed in a state where the plate is shifted by 0 to 30 ° in the plane direction. The first print layer 6 is formed similarly to the background portion 7b. Reference numeral 10 denotes a front surface printing layer, which forms a design on the front surface side of the card.

In this embodiment, the second printing layer 7 is provided on the back side of the concealing layer 4 so as to be located in the same plane as the back side printing layer 8, and the concealing layer 4 is provided on the front side of the card. Transparent non-hiding portion 9 for visually recognizing the second print layer 7 from
Are formed. In this way, the second print layer 7
And the backside printing layer 8 can be formed in the same step, so that the manufacturing cost can be reduced.

In the card constructed as described above, the moire pattern forming portion 7a of the second print layer 7 and the first print layer 6
However, when the card is observed from the front side, A is formed by the moire pattern forming portion 7a.
The moiré pattern 11 having the shape shown in FIG.

In this card, since the degree of overlap between the first print layer 6 and the moiré pattern forming portion 7a changes by changing the viewing angle, the moiré pattern 11 also changes. In order to ensure that such a change can be visually recognized, it is preferable that the distance between the first print layer 6 and the second print layer 7 in the thickness direction is set to about 0.56 to 0.76 mm.

When the card is forged using a copying machine or a scanner, the pattern forming the first print layer 6 and the pattern forming the moiré pattern forming portion 7a are overlapped without any gap in the thickness direction. Becomes Even in this state, although the moiré pattern having the above-described shape is formed, even if the viewing angle is changed, the degree of overlap between the two patterns forming the moiré pattern does not change, so that the moiré pattern does not change. Therefore, it can be easily identified as not authentic.

As in the first embodiment, the first and second printing layers 6 and 7 can be formed by offset printing, silk printing, or the like, and this card is less expensive than a card having a hologram pattern. Can be manufactured.

Note that the present invention is not limited to the above-described embodiment, and various modifications are conceivable.

For example, in the above-described embodiment, moire is generated by two line-shaped patterns. However, moire is generated by a halftone dot pattern, a line-shaped pattern, and two halftone dot patterns. It may be caused to occur.

In the above-described embodiment, the second print layer is formed of a moire pattern forming portion having a predetermined shape and a background portion, and moire is generated between the first print layer and the second print layer. The opposite relationship, that is, the first print layer may be formed of a moire pattern forming portion having a predetermined shape and a background portion, and moire may be generated between the second print layer.

In the above-described embodiment, the moire pattern is formed between the second print layer and the first print layer only by the moire pattern forming portion. May be formed.

Further, a pattern using binocular parallax and moiré may be formed on one card, and it may be determined whether or not forgery is performed using both patterns.

The present invention is also applicable to cards other than magnetic cards.

In addition, various modifications can be made to the above-described embodiment without departing from the gist of the present invention.

[0041]

As described above, the forgery prevention card of the present invention can effectively prevent forgery by a copying machine or a scanner and can be manufactured at a low cost.

According to the forgery prevention card of the eleventh aspect, the second printing layer is provided on the back side of the concealing layer so as to be located in the same plane as the back side printing layer. Since the printing layer and the backside printing layer can be formed in one step, the manufacturing cost is reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of a first embodiment of the present invention.

FIG. 2 is a diagram schematically showing a cross-sectional structure of the card of FIG.

FIG. 3 is a plan view of a second embodiment of the present invention.

FIG. 4 is a diagram schematically showing a cross-sectional structure of the card of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core layer 4 Hiding layer 6 1st printing layer 7 2nd printing layer 7a Moire pattern formation part 7b Background part 8 Back side printing layer

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shinsuke Furukawa 1-1-1 Ichigaya-Kagacho, Shinjuku-ku, Tokyo F-term in Dai Nippon Printing Co., Ltd. (reference) 2C005 HA04 HB01 HB09 JA02 JA08 JB11 JB22 JB25 JB33 JB40 KA02 KA06 KA08 KA40 LA02 LA29 LB15 2H113 AA01 AA03 AA06 BA43 BB22 BB32 BC00 CA37 CA39 CA40 CA44 CA46 EA01

Claims (11)

[Claims] A first printed layer provided on a front surface side of a transparent or translucent core layer; and a second printed layer provided on a back surface side of the core layer. A forgery prevention card characterized in that a pattern utilizing binocular parallax is formed by the second printing layer. 2. A pattern having a three-dimensional effect is formed by forming the second print layer in the same or similar shape as the first print layer and arranging the second print layer so as to overlap the first print layer. The forgery prevention card according to claim 1, wherein the card is formed. 3. The forgery prevention card according to claim 1, wherein a pattern having a three-dimensional effect is formed by forming the second printing layer with a brilliant ink. 4. The method according to claim 1, wherein the second print layer is arranged so as not to overlap with the first print layer, so that a pattern having a perspective is formed. The described forgery prevention card. 5. The method according to claim 1, wherein an interval between the first print layer and the second print layer in a thickness direction is 0.20 to 0.84 mm. Anti-counterfeit card. 6. A printing apparatus comprising: a first printing layer provided on a front surface side of a transparent or translucent core layer; and a second printing layer provided on a back surface side of the core layer. A forgery prevention card, wherein moiré is generated by the second printed layer, and the moiré is changed by changing a viewing angle. 7. The method according to claim 1, wherein the second print layer is formed in the same pattern as the first print layer, and is formed so as to be shifted from the first print layer by 0 to 30 ° in a plane direction. 7. The forgery prevention card according to claim 6, wherein: 8. One of the first printing layer and the second printing layer includes a moire pattern forming portion having a predetermined shape and a background portion, and the moiré pattern forming portion includes the second printing layer and the second printing layer. The forgery prevention card according to claim 6, wherein the moiré pattern having the predetermined shape is formed by one of the other of the first print layers. 9. The moiré pattern forming portion is formed by the same pattern as the background portion and the other printing layer, and is shifted from the background portion and the other printing layer in a plane direction by 0 to 30 °. 9. The forgery prevention card according to claim 8, wherein the forgery prevention card is formed. 10. The method according to claim 6, wherein a distance between the first print layer and the second print layer in a thickness direction is 0.20 to 0.84 mm. Anti-counterfeit card. 11. A concealing layer is provided on the back side of the core layer, and the second printing layer is provided on the back side of the concealing layer so as to be located in the same plane as the back side printing layer. The forgery prevention card according to any one of claims 1 to 10.