JP2003268698A - Information-recording paper and method for utilizing information-recording paper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information-recording paper, or the like, having peculiar magnetic characteristics by an amorphous ferromagnetic membrane thread, and recording characteristics by a magnetic information-recording thread. <P>SOLUTION: The information-recording paper targets prevention of counterfeit, and has two threads of a thread 1 on which an amorphous ferromagnetic membrane for detecting characteristics of a magnetic substance is formed, and a thread 2 to which a ferromagnetic membrane enabling an information to be recorded by the inversion of magnetism is imparted, which are formed in the same paper by papermaking. The method for utilizing the information- recording paper comprises printing continuous sequential numbers N on the surfaces of securities, and recording individual data corresponding to the sequential numbers on the thread imparted with the ferromagnetic membrane on which the information on each of the securities can be recorded. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording sheet and a method of using the information recording sheet. More specifically, two threads, a thread with an amorphous ferromagnetic film for the purpose of detecting the characteristics of a magnetic material on the same sheet and a thread with a ferromagnetic film capable of recording information, are incorporated. The present invention relates to an information recording sheet and a method of using the information recording sheet. The field of use of the information recording sheet of the present invention relates to fields such as gift certificates, gift certificates, certificates, passports, stock certificates, security media, various tickets, and various securities.

[0002]

2. Description of the Related Art A sheet in which a holographic thread is inserted is widely used as a sheet for enhancing the effect of visually preventing forgery. On the other hand, as a method of mechanically detecting the thread, a method of inserting a thread in which a thin film of an amorphous ferromagnetic material or a soft magnetic material is formed into a paper is also disclosed in Japanese Patent Laid-Open No. 2001-1.
1791, JP 2001-11792, JP 2001-11793, JP 20
Various proposals have been made such as 01-11794 and Japanese Patent Laid-Open No. 2001-32192.

However, these detection methods have a great effect on authenticity determination because they detect the peculiar characteristics of the magnetic substance itself, but it is difficult to give individual information to the applied product for each lot. There is a problem that is. That is, the specific information providing method in the technique described in the above-mentioned publication is that the thin film is formed at the thread stage, and is subjected to physical processing such as heat, pressure, laser, and incision, and then multi-valued characteristic change This is a method of adding information that mainly uses fixed data, as it is used for each product or because specific processing is performed in the manufacturing stage before threading. There is a problem that it is extremely difficult to give individual (initial) data.

[0004]

Therefore, in the present invention, a thread in which an amorphous ferromagnetic thin film necessary for detecting genuine / counterfeit discrimination is formed on the same sheet, a thread capable of recording information, and both threads are made. By trying to solve this problem, the problem is solved.

[0005]

A first object of the present invention for solving the above-mentioned problems is an information recording sheet for the purpose of preventing forgery, and an object of detecting the characteristics of a magnetic substance in the same sheet. A thread on which the amorphous ferromagnetic film of
An information recording sheet characterized in that a thread provided with a ferromagnetic film capable of recording information by magnetic reversal and two threads are incorporated. In the above, the amorphous ferromagnetic film may be a thin film vacuum-deposited, and the two threads are inserted in parallel in the vicinity so that they can be read by the same magnetic head. You can

The second gist of the present invention for solving the above-mentioned problems is to enable information recording by means of a sled formed with an amorphous ferromagnetic film for the purpose of detecting the characteristics of a magnetic substance in the same sheet, and magnetic reversal. A method of using an information recording sheet in which two threads are embedded, including a thread provided with a non-ferromagnetic film, and when issuing a security using the information recording sheet, the information is continuously printed on the securities side. The method for using the information recording sheet is characterized in that the sequential number is printed, and the individual data corresponding to the sequential number is recorded on the thread provided with the ferromagnetic film capable of recording the information.

The third gist of the present invention for solving the above-mentioned problems is to enable information recording by reversing magnetic properties with a thread having an amorphous ferromagnetic film for the purpose of detecting characteristics of a magnetic material in the same sheet. A method of using an information recording sheet in which two threads are embedded, including a thread provided with a non-ferromagnetic film, and when issuing a security using the information recording sheet, the information is continuously printed on the securities side. Printing the sequential number and recording the individual data in the thread provided with the ferromagnetic film capable of recording the information regardless of the sequential number, and the correspondence between the sequential number and the individual data is mastered. The method of using an information recording sheet is characterized in that it is managed. In the above, the correspondence between the sequential number and the individual data may be encrypted and master-managed.

A fourth aspect of the present invention for solving the above-mentioned problems is to enable information recording by reversing the magnetic property with a thread having an amorphous ferromagnetic film for the purpose of detecting the characteristics of the magnetic substance in the same sheet. A method of using an information recording sheet in which two threads are threaded together with a thread provided with a different ferromagnetic film, and an amorphous ferromagnetic material is used when issuing a security using the information recording sheet. A method of using an information recording sheet, characterized in that a fixed number recorded in a thread formed with a film or a sequential number including part of the data is recorded in a thread provided with a ferromagnetic film capable of recording information. ,It is in. In the above, a sequential number may be printed on the securities side. When a sequential number is printed on each security face, it can be printed by OCR or MICR.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The information recording sheet of the present invention is a thread (hereinafter also referred to as an "amorphous thread") in which an amorphous ferromagnetic thin film necessary for detecting true / false discrimination is formed in the same sheet. It is characterized in that two threads each having a ferromagnetic material capable of recording information (hereinafter also referred to as “information recording thread”) are incorporated. Information is attached to the amorphous thread mainly by giving fixed data, and individual information (initial) for each sheet (ticket type) in the final product is given to the information recording thread.

The information recording sheet of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 are views showing one embodiment of an information recording sheet and a usage example. As shown in FIG. 1 and FIG. 2, one embodiment of the information recording sheet 10 of the present invention is characterized in that the amorphous paper 1 and the information recording thread 2 are put into the base paper 11 one by one. Figure 1
This is a case where two threads are provided in parallel and in the vicinity, and FIG. 2 shows a case where they are provided in parallel but at positions separated from each other. 1 and 2, each thread is a base paper 11
Although a state in which the thread is linearly pressed and seen from the surface is shown, a thin stock layer is formed on the surface of the thread to prevent the thread from falling off from the paper layer. Further, the threads 1 and 2 may be buried in the paper layer,
It may be soaked so that the buried portion and the exposed portion appear intermittently.

Although there is no restriction on the position of the sheet on which the threads are put in, when two threads are positioned in parallel and in the vicinity as shown in FIG. 1, it is used for detecting the amorphous thread 1 and the information recording thread 2. Easy to share the magnetic head. At the time of detecting the amorphous thread, it is possible to detect the differential characteristic due to the AC excitation (FIG. 1 (B)). In the above, the vicinity differs depending on the magnetic head, but generally 10
Within the range of about 50 mm, stable reading is possible with one shared magnetic head 3. Therefore, although the magnetic head in this case needs to reciprocate, it can contribute to downsizing of the magnetic head and the circuit. Information can be recorded in the information recording thread 2 with a bit configuration by magnetization reversal, and at the time of detection, a multi-valued bit with magnetization reversal by DC excitation can be detected (FIG. 1C).

When the two threads are separated from each other as shown in FIG. 2, the magnetic heads used for detecting the amorphous thread 1 and the information recording thread 2 are the dedicated magnetic heads 4 and 5, respectively. In this case, the magnetic heads 4 and 5 may be operated in one direction, but it is difficult to contribute to miniaturization of the magnetic head and the circuit. As in the case of FIG. 1, FIG. 2 (B) shows detection of a differential characteristic having a peak value by AC excitation when detecting an amorphous thread, and FIG. 2 (C) shows magnetization reversal by DC excitation when detecting an information recording thread. 7 shows the detected multi-valued bit detection.

Next, a method of manufacturing the information recording sheet will be described. First, regarding the thread manufacturing method, the ferromagnetic films of the amorphous thread and the information recording thread are formed on the thread base material surface by a vacuum film forming method or a printing method. If necessary, an adhesive layer is formed on the surface of the thread base material on which the ferromagnetic film is not formed or on the outermost surface of the ferromagnetic film. This has the effect of increasing the adhesive strength when the paper is cut into a base paper to form a forgery prevention paper. The width W of the magnetic thread is not particularly limited, but a width of about 0.2 mm to 5.0 mm is usually used depending on the purpose of use of the paper. For the narrow width, a magnetic film or an adhesive layer is formed and then cut by a precision slitter to reduce the width.

The ferromagnetic film is formed by a vacuum film forming method such as vapor deposition, sputtering or ion plating, or a printing method such as gravure or offset. In the case of vacuum film forming method,
The thickness is a thin film of 1 μm or less, usually 10 nm to 300
Although the thickness is about nm, the film thickness of the magnetic ink by the printing method is usually 0.5 μm to 10 μm after drying, and generally 1 μm to 5 μm. In the case of an amorphous thread, an amorphous ferromagnetic material can be preferably formed by a vacuum film forming method, and in the case of an information recording thread, a ferromagnetic material other than amorphous can be formed by a printing method or the like.

In the case of the vacuum film forming method, the ferromagnetic film is formed by
It is formed by a film forming method using a vacuum process such as sputtering, vapor deposition, or ion plating, using a material containing an alloy containing iron, cobalt, nickel, which is the main component, and a material containing an additive element or a mixture thereof, as a target material or a vapor deposition source. .

Next, when the ferromagnetic film is formed by a printing method, the printing ink used here contains a ferromagnetic material as a pigment and is composed of a binder and a solvent for dispersing the pigment. The ferromagnetic material used has a particle size of 10 nm.
It is possible to use powder having a wide range of particle diameters from 1 to several tens of μm. Considering printability, the particle diameter is preferably several μm or less. There is no problem with the shape of the powder, as long as the powder has a particle size within the above range and printability is maintained. In case of printing method, the film thickness is 10 μm
To about 0.5 μm. The film thickness of 0.5 μm is the lower limit because it is the limit to stably and mechanically adhere a layer having a uniform thickness, and the 10 μm is the upper limit.
It is because it is difficult and stable to apply the coating more than that.

When the ferromagnetic thin film is formed by the vacuum film forming method, it may be crystalline or amorphous, and may be iron (Fe), cobalt (Co), nickel (N).
i) A magnetic material composed of one or a combination of two or more thereof as a main component, to which boron (B), carbon (C), magnesium (Mg), aluminum (A
l), silicon (Si), phosphorus (P), sulfur (S), titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), copper (Cu), zinc (Zn), yttrium ( Y), zirconium (Zr), niobium (Nb), molybdenum (Mo), palladium (Pd), silver (Ag), indium (In), tin (Sn), tantalum (Ta), tungsten (W), iridium ( Ir), platinum (P
t), gold (Au), lead (Pb), and several kinds of metal or non-metal element additives. Of these, the ferromagnetic material is typified by one based on cobalt-zirconium or one based on iron-silicon.

As the resin film base material for the thread, a resin film having solvent resistance and heat resistance can be used,
Generally, polyethylene terephthalate (PET) resin film and other polyester resin film, polyamide resin film, polyimide resin film, polycarbonate resin film, polystyrene resin film, polypropylene resin film, polysulfone resin film, polyphenylene sulfide resin film, cellulose Examples thereof include a resin film and a polyethylene naphthalate resin film. Thickness is 5-300
It is recommended that the thickness is about μm, preferably about 10 to 20 μm.

Various methods are described in the above-mentioned Japanese Patent Laid-Open Publication for a method of giving fixed data to the amorphous thread. For example, Japanese Patent Laid-Open No. 2001-11791 describes that a thin film removing means such as a laser processing method, an etching method, or a lift-off method is used to partially remove and pattern. Further, Japanese Patent Laid-Open No. 2001-11792 describes that a fine uneven shape is provided by a light diffraction grating or a hologram pattern.
No. 01-11793 describes providing a roughening portion on a base film with a roughening ink. JP 2001-11794 A
It is described that a layer of magnetic ink is partially provided on the ferromagnetic material thin film layer, and JP-A-2001-32192 describes that projections of printing ink are provided on the base film. Also in the present invention, an amorphous thread having fixed data can be used by the same means.

A method of squeezing a thread into a sheet is also described in the above-mentioned publications, as well as JP-A-6-306799 and JP-A-6-306799.
It can be carried out by the same method as described in JP-A-10-18981 and JP-A-11-36190. In the finally used information recording sheet, both the amorphous thread and the information recording thread are included in the same sheet of cut unit. Therefore, the size of the securities used is A4
If the size is B5 or B5, it is necessary to include two threads in each size.

When the magnetic characteristics of the information recording sheet thus completed are measured, the ferromagnetic characteristics that the coercive force is small and the squareness ratio is large when the magnetic field is applied by applying AC excitation to the amorphous thread 1 portion. Therefore, by taking the difference between the output from the detection coil and the output from the reference coil,
A waveform as shown in FIG. 1 or 2B is shown. However,
The waveform shows a peak waveform peculiar to the amorphous ferromagnet, and when fixed data is recorded, the peak waveform lacks or falls. On the other hand, when measured by applying a magnetic field to the information recording thread 2 by applying a direct current to the information recording thread 2, a waveform having a bit configuration as shown in FIG.

<Method of Using Information Recording Paper> Next, a method of using the information recording paper of the present invention will be described. An example of using the information recording sheet of the present invention will be described by taking a process from issue of securities to collection as an example. For securities in which an amorphous thread and an information recording thread are embedded, the consecutive sequential number N is OCR or MIC before issuance.
Printed with R. When individual data is given and issued for each security unit, individual information corresponding to the consecutive sequential number N is recorded as magnetic information in the information recording thread. This individual information can be written / erased and has an advantage that it can be reused.

As a management method after this, there are the following methods. (1) A management method for providing a direct or indirect correspondence between the individual information of the information recording thread and the continuous sequential number N is performed. Direct correspondence is to record the same individual information as the continuous sequential number N in the information recording thread, and indirect correspondence is continuous sequential number ±
This means recording data such as α as individual information. (2) The individual information of the information recording thread is given a random characteristic, and the individual information is given regardless of the continuous sequential number N. The correspondence between the two is managed in the database. When the securities are collected, the correspondence relationship is checked based on the database to check the validity. (3) Similar to the above (2), the individual information of the information recording thread has a random characteristic, and the individual information is given regardless of the continuous sequential number N. The correspondence between the two is encrypted and master-managed, and when the security is recovered, the encryption is combined and decrypted to check the validity of the correspondence between the two.

At the time of collecting or accepting securities, the authenticity of the information recorded in the information recording thread is checked, and the unique magnetic characteristic of the amorphous thread is detected, so that the authenticity discrimination can be realized at a high level. In the case of anonymous centralized issuance of securities, the continuous sequential number N and the data of the information recording thread can be recorded by the above method and can be managed as tracking and history data.

FIG. 3 is a diagram showing another example of using the information recording sheet. In the case of FIG. 3, the fixed data previously given to the amorphous thread 1 is used. The fixed data is information given in advance at the thread manufacturing stage by heat, laser, roughening, etc. as described above, and it is said that common fixed data is given for at least one lot of securities. Assumption. Then, in the information recording thread 2, fixed data of the amorphous thread or a part of the data is recorded in a linked form. For example, in amorphous thread 1,
When the information "XY" is recorded as the fixed data, the information recording thread 2 stores "XY0" as the individual information.
A sequential sequential number N including fixed data such as "001", "XY0002", "XY0003" ... Can be given. Continuous sequential number N
It goes without saying that the may be printed on the securities.

In the above description of the embodiments, securities have been mainly described as an example, but the information recording paper of the present invention can be used for gift certificates, gift certificates, certificates, passports, stock certificates,
It is obvious that the present invention can be applied to security media, various tickets, various securities, etc., and can be applied to applications in which terms are simply replaced, and it is also obvious that the scope of the present invention is equivalent.

[0027]

As described above, the information recording sheet of the present invention exhibits a very high anti-counterfeiting effect by detecting the unique characteristic of the amorphous thread. At the same time, since individual data can be added to the information recording thread, the system can be used for ID authentication and ticket type tracking. Further, magnetic recording of information in the information recording thread can be repeatedly written / erased, and has an advantage that it can be reused. According to the method of using the information recording sheet of the present invention, various methods of utilizing the characteristics of the amorphous thread and the information recording thread can be realized, and a counterfeit product or a counterfeit product can be detected with high accuracy.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of an information recording sheet and a usage example.

FIG. 2 is a diagram showing another embodiment of an information recording sheet and a usage example.

FIG. 3 is a diagram showing another example of using the information recording sheet.

[Explanation of symbols]

1 amorphous thread 2 Information recording thread 3 shared magnetic head 4,5 Dedicated magnetic head 10 Information recording paper 11 base paper N sequential number

Claims (9)

[Claims] 1. An information recording sheet for the purpose of preventing forgery, wherein a thread having an amorphous ferromagnetic film for detecting the characteristics of a magnetic substance formed in the same sheet and information recording by magnetic reversal are possible. An information recording sheet characterized in that two threads, a thread provided with a ferromagnetic film, are incorporated. 2. The information recording sheet according to claim 1, wherein the amorphous ferromagnetic film is a thin film formed in vacuum. 3. The information recording paper according to claim 1, wherein the two threads are inserted in parallel in the vicinity so that the two threads can be read by the same magnetic head. 4. A thread having an amorphous ferromagnetic film for detecting the characteristics of a magnetic material on the same sheet and a thread having a ferromagnetic film capable of recording information by magnetic reversal. Is a method of using the information recording paper in which the thread is embedded, and when issuing a security that uses the information recording paper, print consecutive sequential numbers on the security face and support the sequential number. A method of using an information recording sheet, characterized in that the individual data is recorded on a thread provided with a ferromagnetic film capable of recording the information. 5. A thread having an amorphous ferromagnetic film for the purpose of detecting characteristics of a magnetic material in the same sheet and a thread having a ferromagnetic film capable of recording information by magnetic reversal. Is a method of using the information recording paper in which the thread is embedded, and when issuing a security using the information recording paper, printing consecutive sequential numbers on the security face and the sequential number are A method of using an information recording sheet characterized in that individual data is recorded independently on a thread provided with a ferromagnetic film capable of recording information, and the correspondence between the sequential number and the individual data is master-managed. . 6. The method of using the information recording sheet according to claim 5, wherein the correspondence between the sequential number and the individual data is encrypted and master-managed. 7. A thread having an amorphous ferromagnetic film for the purpose of detecting characteristics of a magnetic material in the same sheet and a thread having a ferromagnetic film capable of recording information by magnetic reversal. Is a method of using the information recording sheet in which the thread is embedded, and when issuing a security using the information recording sheet, the fixed data recorded in the thread formed with the amorphous ferromagnetic film or the fixed data A method of using an information recording sheet, wherein a sequential number including a part of data is recorded on a thread provided with a ferromagnetic film capable of recording information. 8. The method of using the information recording sheet according to claim 7, wherein the sequential number is printed on the security side. 9. The security sequential number is OCR.
Alternatively, the method of using the information recording sheet according to claim 4, 5 or 8, wherein the information recording sheet is printed by MICR.