JP2000187749A - Method for identifying authenticity of paper sheets - Google Patents

Abstract

PROBLEM TO BE SOLVED: To precisely identify authenticity by irradiating paper sheets containing metal materials in a part with light having a prescribed wavelength or a prescribed waveform, recognizing the change of the wavelength and the waveform, which is changed by correspondence with the metal material, and comparing it with true data. SOLUTION: Paper money 1 having a metal stripe 3 being a hidden line in a part is inserted from a paper money insertion port in a vending machine, the authenticity and denomination of it are checked and it is stored in a stacker. The switch of a mechanism is turned on with the insertion of paper money 1 and paper money 1 is irradiated with a near-infrared ray as light which is set to a prescribed wavelength when paper money 1 is loaded in a device. The projected near-infrared ray passes through paper money 1 or is reflected and it is inputted to a light receiving element becoming a pair with a light emitting element in a state that it has information. True data against four patterns obtained by gathering the surface, the rear face and the insertion direction of paper money 1 are compared. Then, the changes in the wavelength and the waveform caused by the metal stripe 3 are recognized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to paper sheets, and more particularly to an apparatus for authenticating bills.

[0002]

BACKGROUND OF THE INVENTION Generally, banknotes are difficult to counterfeit,
Further, in order to make it easy to check the authenticity, a great number of advanced technologies are used from paper quality used in manufacturing to printing technology. However, technological advances have also promoted counterfeiting techniques, and have not been able to keep up with conventional checks of factors such as magnetism, embossing, and watermarks.

[0003] In recent years, there has been developed a metal bill, which is partially provided as a foil material or a thread material which is made as thin as possible. As shown in FIG. 2, the arrangement of the metal material is provided as a chain line 2 in the vertical direction along the short direction of the banknote 1 as a part of printing on the front or back surface, or as shown in FIG. 1. In this way, it is arranged as a streak 3 embedded in the banknote 1 so as to be recognized as a watermark, and may be arranged as a part of a character or a pattern.

[0004]

However, in the above situation, no particular method for checking the authenticity of paper sheets having a metal material has been developed, and the conventional identification judgment is performed. In this case, the meaning of providing the metal material is weakened, and conversely, a situation in which the metal material reacts to the metal material and is repelled as an imitation can be considered.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances and problems, and it is possible to perform this check in correspondence with a metal material which is properly provided, and to make it possible to identify authenticity. It is an object of the present invention to provide a method for authenticating leaves.

[0006]

In order to achieve this object, a method for identifying the authenticity of a paper sheet according to the present invention has a specific wavelength or a specific waveform with respect to a paper sheet partially having a metal material. Irradiating the light, recognizing a change in wavelength or waveform caused by the correspondence with the metal material described above, and comparing it with authentic data, continuously irradiating the light while running the paper sheet described above It is characterized in that the sheet is stopped, the optical device is run, the near-infrared light is used as the light, the optical device is a sensor, And a plurality of light receiving sides are provided.

[0007]

According to the above construction, light of a specific wavelength is applied to a specific metal material included in the paper sheet, and the material including the presence or absence of the metal material and the width, thickness, and the like are determined. This makes it possible to perform a check and accurately identify the authenticity.

[0008]

FIG. 1 shows an embodiment of the present invention.
And the bill shown in FIG. 2 will be described.
A bill 1 shown in the figure is inserted from a bill insertion slot in a vending machine, a money changing machine, or the like, checked for authenticity and denomination, and expropriated in a stacker as in the prior art.

The switch of the mechanism is turned ON by the above-mentioned insert, and the bill is loaded into the apparatus. At the time of this loading, the bill is irradiated with light set to a specific wavelength, for example, near infrared rays. This near-infrared ray is naturally transmitted from the light-emitting element, and this near-infrared ray is transmitted or reflected by the bill and input to the light-receiving element paired with the light-emitting element in a state having information.

The information collection by the light emitting element and the light receiving element corresponds to four patterns in which the front and back and the insertion direction of the bill are matched, and the comparison with the genuine data in each of them is performed. .

The comparison between the authentic data and the collected information is made not only with respect to the metal material data but also with the conventional magnetism, watermark, ink, embossing, etc. by considering the metal material data as one element. , And the accuracy of identification is further improved.

Further, this identification method is not limited to the irradiation of light at a position fixed to a running bill,
It is possible to perform the operation by moving the light emitting element and the light receiving element to the stopped banknote, or to perform the operation with the banknote temporarily stopped to the fixed light emitting element and the light receiving element. It is also possible to use elements for different data purposes.

Although the present embodiment has been described with reference to banknotes as an example, the present invention is not limited to banknotes, and can be used for securities, gift certificates, beer tickets, etc., as long as they have metal materials. Of course, it can be applied.

[0014]

The method for identifying the authenticity of a paper sheet according to the present invention is configured as described above. Therefore, it is possible to accurately cope with a metal material added as a new authentication element, and it is possible to effectively achieve the initial purpose without fear of rejecting a sheet having the new authentication element as an imitation. It has become.

[Brief description of the drawings]

FIG. 1 is a front view of a banknote having a metal streak that can be recognized as a watermark.

FIG. 2 is a front view of a banknote having a metal streak that can be recognized as a chain line on the surface.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Banknote 2 Chain metal streaks 3 Metal streaks which become a hidden line

Claims (5)

[Claims] 1. A paper sheet having a metal material in a part thereof,
A method of identifying authenticity of paper sheets, comprising irradiating light having a specific wavelength or a specific waveform, recognizing a change in wavelength or waveform caused by the correspondence with the above-described metal material, and comparing the change with authentic data. 2. The method according to claim 1, wherein the light is continuously emitted while the paper is running. 3. The method according to claim 1, wherein the optical device is caused to travel while the paper sheets are stopped. 4. The method according to claim 1, wherein near-infrared light is used as the light. 5. The paper sheet according to claim 1, wherein the optical device is a sensor, and a plurality of sets of a light emitting side and a light receiving side are provided. Authentication method.