JPH11328356A - Detected body whose genuiness is checked and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the detected body which can easily be manufactured while a magnetic polymer element is usable without any waste. SOLUTION: The detected body 10 has a magnetic tape 13 provided on a base material 11 made of synthetic resin and is equipped with a magnetic polymer element dispersed layer 20 as a scanning area 12 on the reverse side of the magnetic tape 13. The magnetic tape 13 is narrower than the base material 11. The magnetic polymer element dispersed layer 20 is formed by dispersing many magnetic polymer elements 22 in the adhesive layer 21 of the magnetic tape 13 at random and held between the magnetic tape 13 and base material 11. The magnetic tape 13 having the magnetic polymer element dispersed layer 20 is provided in the scanning direction of the detected body 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to cards such as credit cards, ID cards and CD cards, passports, important documents and securities, bills such as banknotes and checks,
The present invention relates to a detection target, such as a traveler's check, a public race ballot such as a boat race, a horse race, and the like, for which it is necessary to prevent forgery and whose authenticity is checked, and a method of manufacturing the same.

[0002]

2. Description of the Related Art As means for checking the authenticity of various cards and documents, for example, JP-A-50-6999, JP-A-6-179296, or JP-A-7-79.
As described in JP-A-32777, it is known that a scanning area of an object to be detected is scanned by a sensor, and an obtained detection signal is collated with collation data.

For example, a conventional card-like object 1 shown in FIG. 13 has a magnetic element 2 randomly mixed in the whole, and a scanning area 3 set at a specific position of the object 1.
Is scanned by the sensor 4 to obtain a detection signal. Then, the detection signal is processed in an arithmetic processing unit or the like of the processing device and collated with the encryption code registered in the data recording unit.

[0004]

As described above, in the conventional object to be detected, the magnetic elements are dispersed over the entire surface. As a result, a large number of magnetic elements are present in portions other than the scanning area, and not only are the magnetic elements being wasted, but also various devices such as dispersers required to randomly mix the magnetic elements into a wide area. There was a problem that equipment and processes became special and the manufacturing cost was high. Therefore, an object of the present invention is to provide an object to be detected and a method for manufacturing the same, which can use the magnetic element without waste and can be easily manufactured.

[0005]

The object of the present invention for achieving the above object is to provide a scanning area to be detected by a sensor on a base material made of synthetic resin or paper, The scanning region is provided with a band-shaped magnetic polymer element dispersion layer obtained by randomly dispersing a large number of magnetic polymer elements in a region smaller than the width of the base material, on the base material along the scanning direction of the scanning region. It is characterized by becoming.

According to the present invention, a magnetic polymer element dispersion layer is provided on the back side of an optically opaque magnetic tape, and the magnetic tape and the magnetic tape are arranged so that the magnetic polymer element dispersion layer is sandwiched between the base material and the magnetic tape. It also includes fixing the polymer element dispersion layer to a substrate. The present invention also includes providing a magnetic polymer element dispersion layer at a position not overlapping with the IC chip in an object to be detected on which the IC chip is provided on the base material.

The manufacturing method of the present invention comprises the steps of randomly dispersing a large number of magnetic polymer elements on the back side of a magnetic tape and fixing them with an adhesive; Transferring to a material. Further, the production method of the present invention includes a step of randomly dispersing and attaching a large number of magnetic polymer elements to a base film, and a step of transferring the magnetic polymer elements attached to the base film to a substrate.

Further, according to the manufacturing method of the present invention, a first base material and a second base material made of paper are manufactured, and a large number of magnetic polymer elements are randomly dispersed and fixed on the third base material made of paper. Producing a magnetic polymer element-dispersed tape having a width narrower than the first and second substrates by subjecting the magnetic polymer element-containing sheet to slitting processing, thereby obtaining a magnetic polymer element-containing sheet. Manufacturing a laminated paper containing a magnetic polymer element by sandwiching the element dispersion tape at a predetermined position between a first base material and a second base material and bonding the base materials to each other; Cutting the paper into predetermined dimensions.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. One example of the detection object 10 shown in FIG. 1 is in the form of a card, and has a plate-shaped base material 11 as a detection object main body mainly composed of a nonmagnetic material such as a synthetic resin. At a predetermined position of the base material 11, a scanning area 12 representing the characteristics of the detection object 10 and a magnetic tape 13 functioning as a registration data recording unit for recording an encryption code corresponding to the scanning area 12 are provided.

As shown in FIG. 2, the substrate 11 is made of a first core sheet 1 made of a synthetic resin such as a vinyl chloride resin.
5, a second core sheet 16 made of a synthetic resin such as a vinyl chloride resin, and transparent overlay sheets 17 and 18 covering the core sheets 15 and 16.

The first core sheet 15 and the second core sheet 16 are used when the object 10 is manufactured.
16 are heated to the softening temperature, and are subjected to a laminating step of applying pressure by a roller or the like so that they are self-fused to each other. The core sheets 15 and 16 may be fixed to each other by an adhesive. Core sheet 15, 1
An example of No. 6 is made of a vinyl chloride resin (so-called milky white vinyl sheet) to which a coloring agent or pigment such as an optically opaque milky white color is added. An example of the thickness of each of the core sheets 15 and 16 is 280 μm. Core sheets 15, 16
May be printed on the surface as needed.

The overlay sheets 17 and 18 are made of, for example, a transparent vinyl chloride resin (a so-called transparent PVC sheet), and are laminated to the core sheets 15 and 16 by a fixing means such as self-fusion or adhesion. An example of the thickness of each of the overlay sheets 17 and 18 is 1
00 μm.

The scanning area 12 is the magnetic polymer element dispersion layer 2
Consists of zero. This magnetic polymer element dispersion layer 20 has a large number of fine magnetic polymer elements 22 dispersed randomly on the back side of a magnetic tape 13 as a magnetic layer mainly composed of a magnetic material having a high coercive force, and is fixed by an adhesive layer 21. It was done. The magnetic tape 13 provided with the magnetic polymer element dispersion layer 20 extends in the scanning direction of the scanning area 12 (the direction of arrow F in the figure).

The width W1 of the magnetic polymer element dispersion layer 20 (that is, the width of the magnetic tape 13) is smaller than the width W2 of the substrate 11, and is preferably smaller than the element width W3 of the MR elements 60 and 61 described later. I have. Each of the magnetic tape 13 and the magnetic polymer element dispersion layer 20 extends over the entire length of the base material 11, and a part (detection length L 1) of the entire length is used as the scanning region 12.

An example of the magnetic polymer element 22 is a magnetic polymer fiber in which a magnetic metal powder is mixed in a fibrous element body made of a polymer material. An example of the polymer material used for the element body is polyethylene, polyester, urethane, or the like. In short, a known synthetic resin having appropriate flexibility can be applied. The magnetic metal used for the magnetic polymer element 22 includes Permalloy, Sendust, Co
A magnetically soft high-permeability magnetic material such as a system amorphous or a soft ferrite is suitable, but a magnetically hard high coercivity material such as a ferrite, an Sm-Co alloy, or an Nd alloy is used. You may.

Hereinafter, a method of manufacturing the object 10 according to this embodiment will be described. As shown in FIG. 3, a base film 2 made of, for example, PET (polyethylene terephthalate) is provided on the surface side of a magnetic tape 13 as a magnetic layer.
3 are applied. On the back side of the magnetic tape 13, many magnetic polymer elements 22 are randomly dispersed and fixed by the adhesive layer 21 in the magnetic polymer element applying step.

The magnetic tape 13 to which the magnetic polymer element dispersion layer 20 has adhered is pressed against the overlay sheet 17 by the thermal transfer roller 25, so that the magnetic tape 13 and the magnetic polymer element dispersion layer 20 are transferred to the overlay sheet 17. After passing through the thermal transfer roller 25, the base film 23 is peeled off from the magnetic tape 13 and removed.

As shown in FIG. 4, core sheets 15 and 16 each having a size corresponding to several tens of sheets of the object 10 to be detected, one overlay sheet 17 to which the magnetic polymer element dispersion layer 20 is adhered, and the other overlay sheet 18 Are laminated together, and they are pressed together and fixed by self-fusion or an adhesive to obtain a laminated material 26 having a size capable of taking about 10 to 30 detection objects 10. By cutting this laminate material 26 to a predetermined size using a punching die, a plurality of detection objects 10 can be obtained efficiently.

A conventional general plastic card such as a credit card or a bank card is also used as the base material 11 of the present embodiment.
In many cases, the laminated structure is the same as described above. That is, the conventional card was also manufactured by equipment for laminating a resin base material and a magnetic tape. For this reason, the detection object 10 of the present embodiment can be manufactured by using existing card manufacturing equipment, and has an advantage that a large change of the equipment is not required.

The magnetic tape 13 functioning as a registration data recording section has unique information obtained by scanning the scanning area 12, that is, the magnetic polymer element 22.
Unique information (data for collation) characterized according to the distribution state or the like is encrypted and written. The magnetic tape 13 may record various kinds of information (for example, a denomination and a balance in the case of a prepaid card) in addition to the collation data. The recorded content of the magnetic tape 13 may be recorded in a storage area (for example, a memory of a host computer) of an electronic device different from the detection target 10.

If the magnetic polymer element dispersion layer 20 is provided on the back side of the magnetic tape 13 as in the detection object 10 of this embodiment, the magnetic polymer element dispersion layer 20 and the magnetic tape 13
The process of laminating the magnetic polymer element on the base material 11 is simplified, and the magnetic polymer element dispersion layer 20 can be hidden by the optically opaque black or brown magnetic tape 13. Polymer element dispersion layer 2
Since 0 is not visible, security is high.

Next, a second embodiment of the present invention will be described with reference to FIGS. In the detection object 10 of this embodiment, a magnetic polymer element dispersion layer 20 is provided between the overlay sheet 17 and the core sheet 15 as shown in FIG. The overlay sheet 17 made of an optically transparent synthetic resin material covers the magnetic polymer element dispersion layer 20 with a print layer 28 provided on the overlay sheet 17.

In the case of this embodiment, the magnetic polymer element dispersion layer 20 is manufactured by a tape manufacturing apparatus 30 whose example is shown in FIG. The tape manufacturing apparatus 30 includes a base film 31 fed from a film supply reel 31a.
Then, an adhesive 32a is applied by an adhesive supply mechanism 32, and a large number of magnetic polymer elements (magnetic polymer fibers) 22 are randomly dispersed from above by a disperser 33. The length of the magnetic polymer element 22 is suitably about 1 mm to 4 mm, but may be other lengths. The base film 31 is made of, for example, PE having a thickness of 10 μm to 30 μm.
It consists of a T plate and the like.

The heater 3 is used to cure the adhesive 32a.
The magnetic polymer element 22 is adhered on the base film 31 by heating with the step 5. Thus, a wide film 36 with a magnetic polymer element is obtained. Then, the film 36 with the magnetic polymer element is cut into a cutter (slitter).
By cutting (slitting) parallel to each other so as to have a predetermined tape width by 37, a plurality of tapes 20a with magnetic polymer elements to which the magnetic polymer elements 22 are adhered can be obtained at the same time. These magnetic polymer element-attached tapes 20a are wound on reels 38, respectively.

The magnetic polymer element-attached tape 20a thus obtained is pressed against the overlay sheet 17 by a thermal transfer roller 25 of a transfer device as shown in FIG. 7, and the magnetic polymer element dispersion layer 20 is transferred to the overlay sheet 17 by thermal fusion. At the same time, the base film 31 is peeled off. Then, as shown in FIG. 5, the magnetic polymer element dispersion layer 20 is laminated so that it is sandwiched between the core sheet 15 and the overlay sheet 17.
The magnetic polymer element dispersion layer 20 is hidden by the printed layer 28 of FIG.

Instead of the magnetic tape 13 of the above-described embodiment, an optically readable sign (for example, a bar code, a two-dimensional bar code, an OCR character, etc.) may be recorded by a print head, or a magnetic ink may be used. Alternatively, the hologram recording the code may be sequentially stamped according to the encryption code.

FIG. 8 shows a third embodiment of the present invention. The object 10 is a magnetic polymer element dispersion layer 20.
Is provided on the core sheet 40 as an intermediate layer. Other configurations are the same as those of the above embodiment. The core sheet 40 is formed of a milky white plastic plate having a thickness of, for example, 100 μm, and the core sheet 40 is sandwiched between optically opaque core sheets 15 and 16.
The magnetic polymer element dispersion layer 20 is hidden. In this case, by setting each of the overlay sheets 17 and 18 to 50 μm, the same card standard thickness as that of the embodiment (FIG. 2) can be obtained. In this embodiment, the number of laminations of the core sheets 15, 16, and 40 is increased by one compared with the previous embodiment (FIGS. 2 and 5). no problem. The thickness of the core sheet 40 is not limited to 100 μm, and can be changed within a range that is not affected by the transfer device, and is not particularly limited as long as the total thickness of the card falls within the standard. Absent.

The object to be detected 10 described in each of the above embodiments is described.
Is processed by the processing device 50 whose example is shown in FIG. The processing device 50 moves the detection object 10 in the scanning direction indicated by the arrow F along the movement path 50a. A sensor 51 is provided in the middle of the movement path 50a. An example of the sensor 51 is a pair of MR elements (magnetoresistive elements) 60 and 61. MR element 60, 6
The magnet 62 is arranged behind the first. MR
In addition to the elements 60 and 61, for example, a magnetoelectric conversion element such as a magnetic diode, a magnetic transistor, or a Hall element may be used.

Each of the MR elements 60 and 61 has such a characteristic that the electric resistance changes according to the strength of the magnetic flux passing through the elements. These MR elements 60 and 61 are electrically connected to each other, and a magnetic field of the same strength by the magnet 62 is applied to each MR element 60 and 61. One MR
The element 60 is connected to a DC power supply 63 and the other MR element 6
1 is connected to an arithmetic processing unit 65 using a microcomputer or the like.

When the scanning area 12 is scanned by the sensor 51, the vicinity of the MR elements 60 and 61 is
2, the magnetic flux passing through the MR elements 60 and 61 changes with time according to the position of the magnetic polymer element 22. For this reason, a difference occurs between the resistance values of the MR elements 60 and 61,
The output voltages of the MR elements 60 and 61 change. Since the output voltage slightly changes according to the distribution density of the magnetic polymer element 22, the size of the magnetic polymer element 22, and the like, a waveform of the output voltage peculiar to each detected object 10 is obtained.

Each of the MR elements 60 and 61 has its resistance value changed by the influence of the bias magnetic field by the magnetic polymer element 22 existing in a range where the element shape is projected on the detection object 10. Therefore, as in this embodiment, the width W1 of the magnetic polymer element dispersion layer 20 is equal to the element width W3 of the MR elements 60 and 61.
In a narrower one, the magnetic polymer element dispersion layer 20 has M
As long as the signal does not protrude outside the R elements 60 and 61, a constant and stable detection signal is always obtained.

The processing device 50 includes a code reading section 75 for reading data recorded on the magnetic tape 13 or the like. The code reading unit 75 includes a reading circuit 76.
It is connected to the. The arithmetic processing unit 65 includes an A / D converter 80 for processing the detected signal, a comparator 81, an encryption code converter 82, and the like. A display 83 indicating a check result or the like is connected to the arithmetic processing unit 65.

In the process of issuing the object 10, the scanning area 12 is scanned by a sensor using the same MR element pair as the sensor 51, and the output voltage waveform is encrypted by a specific algorithm, and then the magnetic tape or the like is used. 13 is recorded.

To check whether the object 10 is authentic, insert the object 10 into the processing device 50,
The detection signal is obtained by moving the detection object 10 in the scanning direction F along the movement path 50a and scanning the scanning area 12 by the sensor 51. This detection signal is decoded by the encryption code converter 82 according to a specific algorithm.

The collation data recorded on the magnetic tape 13 is read by the code reading section 75. The comparison data is compared with the decoded detection signal of the scanning area 12 by the comparator 81. When the two match, the object 10 is determined to be authentic, and the comparison result is displayed on the display 83. Is displayed.

Next, an object to be detected according to a fourth embodiment of the present invention will be described with reference to FIGS. FIG.
1 shows an object 10 in the form of a paper sheet mainly composed of paper. The object to be detected 10 is a papermaking upper layer (first base material) 9
0 and a papermaking lower layer (second base material) 91, and each layer 90, 9
Each of the layers 90 and 9 sandwiches a tape (magnetic polymer element dispersion tape) 92 having a magnetic polymer element dispersion layer 20 between them.
1 are attached to each other.

In order to manufacture the magnetic polymer element dispersion tape 92 of this embodiment, the magnetic polymer element 22 is mixed with the pulp raw material (pulp fiber) constituting the third base material to make a paper. A wide magnetic polymer element-containing sheet (preferably 20 μm to 50 μm in thickness) having a width corresponding to a plurality of the dispersion tapes 92 is prepared. Then, this magnetic polymer element-containing sheet is subjected to slitter processing by the same cutter 37 as in the embodiment shown in FIG. 4 to obtain a magnetic polymer element dispersion tape 92 having a predetermined width.

The magnetic polymer element dispersion tape 9
2 is a papermaking upper layer 90 and a papermaking lower layer 91 as shown in FIG.
Between each layer 9 while being pressed by a roller 94 or the like.
By laminating 0 and 91 to each other, a long laminated paper 95 containing a magnetic polymer element having a thickness of, for example, 20 to 50 μm is produced and wound around a reel 96. Then, by cutting the laminated paper 95 containing the magnetic polymer element into a predetermined length, the detection object 10 as shown in FIG.
Get.

The object to be detected 10 (FIG. 10) is made up of a magnetic polymer element tape 9 by an upper papermaking layer 90 and a lower papermaking layer 91.
2 is optically concealed, so that the security is high. The object 10 can be manufactured using the current paper manufacturing process and manufacturing equipment. Other configurations and operations are the same as those of the first embodiment. Therefore, common portions to those of the first embodiment are denoted by common reference numerals, and description thereof is omitted.

The present invention relates to a card-like object (IC card) 10 having an IC chip 97 like the fifth embodiment shown in FIG.
The present invention can be applied to a device provided with 0. For an IC card, I
When the C chip 97 is embedded in the base material 11, it is necessary to perform a milling process.
It is not preferable that the magnetic polymer element 22 exists near the chip 97 because the magnetic polymer element 22 may interfere with the chip 97. However, the IC card of this embodiment (the object to be detected 10) is
Since the magnetic polymer element dispersion layer 20 can be laminated in a narrow region avoiding the above, the chip processing such as milling is not affected. Other configurations and operations are the same as those of the first embodiment, and therefore, the same parts as those of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

[0041]

According to the object to be detected according to the first aspect,
The magnetic polymer element can be provided only in a part of the object to be detected, that is, only in the scanning region, and the waste of the magnetic polymer element is reduced, which can contribute to cost reduction. In addition, since a band-shaped magnetic polymer element dispersion layer having a width sufficiently smaller than the width of the detection object is used, a device such as a disperser can be reduced in size compared with a case where the magnetic polymer element is dispersed over the entire surface of the detection object. Simplification can be achieved, and the cost of manufacturing equipment can be reduced.

According to the second aspect of the present invention, the magnetic polymer element dispersed layer can be hidden by the magnetic tape, so that the security can be improved and the magnetic polymer element dispersed layer can be easily laminated on the base material. Become.
According to the third aspect of the present invention, the magnetic polymer element does not affect chip processing in an object having an IC chip such as an IC card.
Application to C cards is facilitated.

According to the manufacturing method of the fourth aspect, the magnetic polymer element dispersion layer can be transferred to the substrate when the magnetic tape wound in a roll is continuously transferred to the substrate. An object to be detected containing a magnetic polymer element can be efficiently manufactured using the existing magnetic tape transfer process and equipment. According to the manufacturing method described in claim 5, the magnetic polymer element dispersed layer attached to the base film wound into a roll is continuously transferred to the substrate, so that the detection object containing the magnetic polymer element can be efficiently used. Can be manufactured well.

According to the manufacturing method of the sixth aspect, the magnetic polymer element tape containing the magnetic polymer element mainly containing paper is laminated by laminating the magnetic polymer element tape between the first base material and the second base material. An object to be detected can be efficiently manufactured. Further, since the magnetic polymer element tape used in the production can be handled in a state wound on a reel, handling is extremely easy.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an object to be detected and a sensor according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the detected object along the line II-II in FIG.

FIG. 3 is a cross-sectional view showing a part of a facility for manufacturing the magnetic tape with the magnetic polymer element of the object shown in FIG. 1;

FIG. 4 is a plan view of the laminate shown in FIG.

FIG. 5 is a sectional view showing an object to be detected according to a second embodiment of the present invention.

FIG. 6 is a perspective view of a tape manufacturing apparatus used for manufacturing the tape with the magnetic polymer element of the object shown in FIG. 5;

FIG. 7 is a cross-sectional view showing a part of a transfer device for a magnetic polymer element dispersion layer of an object shown in FIG. 5;

FIG. 8 is a sectional view showing an object to be detected according to a third embodiment of the present invention.

FIG. 9 is a side view partially showing a device for processing an object to be detected.

FIG. 10 is a plan view showing an object to be detected according to a fourth embodiment of the present invention with a portion cut away.

FIG. 11 is a perspective view showing a part of an apparatus for manufacturing the object shown in FIG. 10;

FIG. 12 is a perspective view showing an object to be detected according to a fifth embodiment of the present invention.

FIG. 13 is a perspective view showing a conventional object to be detected and a sensor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Detection object 11 ... Substrate 12 ... Scanning area 13 ... Magnetic tape 20 ... Magnetic polymer element dispersion layer 22 ... Magnetic polymer element 90 ... Papermaking upper layer (1st base material) 91 ... Papermaking lower layer (2nd base material) 92) Magnetic polymer element dispersion tape 95 ... Laminated paper containing magnetic polymer element

Claims (6)

[Claims] An object to be detected which is provided with a scanning area to be detected by a sensor on a base material made of synthetic resin or paper, wherein the scanning area has a number of magnetic polymer elements smaller than the width of the base material. An object whose authenticity is checked, wherein a strip-shaped magnetic polymer element dispersion layer which is randomly dispersed in a region is provided on the base material along a scanning direction of the scanning region. 2. The magnetic polymer element dispersion layer is provided on the back side of an optically opaque magnetic tape, and the magnetic tape is disposed so that the magnetic polymer element dispersion layer is sandwiched between the base material and the magnetic tape. 2. The object whose authenticity is checked according to claim 1, wherein a magnetic polymer element dispersion layer is fixed to the base material. 3. The authenticity is checked according to claim 1, wherein the magnetic polymer element dispersion layer is provided at a position not overlapping with the IC chip in the detection object on which the IC chip is provided on the base material. Object to be detected. 4. A step of randomly dispersing a large number of magnetic polymer elements on the back side of a magnetic tape and fixing them with an adhesive; and transferring the magnetic tape and the magnetic polymer elements to which the magnetic polymer elements are attached to the base material. A method for manufacturing an object to be detected, comprising: 5. A method comprising the steps of: randomly dispersing and attaching a large number of magnetic polymer elements to a base film; and transferring the magnetic polymer elements attached to the base film to a base material. Production method of the detected object. 6. A method of manufacturing a first base material and a second base material made of paper, and a method of randomly dispersing and fixing a large number of magnetic polymer devices on a third base material made of paper. Producing a magnetic polymer element-dispersed tape narrower than the first and second substrates by slitting the magnetic polymer element-containing sheet after obtaining the sheet containing the magnetic polymer element; Manufacturing a laminated paper containing a magnetic polymer element by sandwiching the substrate at a predetermined position between the first substrate and the second substrate and bonding the substrates together; A method for manufacturing an object to be detected, comprising: a step of cutting into dimensions.