JPH11185097A - Method and system for identifying truth/false of securities - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correctly identify the truth/false of securities by discriminating the presence/absence and shape of secondary light emission to occur when the stamp of securities is irradiated with excited light and discriminating the wavelength dependency of excitation sensitivity provided for the material of the stamp. SOLUTION: A denomination truth/false identifying sensor 32 discriminates the outline dimension of a paper money 5, a printing pattern with visible light/ infrared light and a magnetic ink printing pattern. The fluorescent ink printed on the paper money 5 is irradiated with excited light from a light source of ultraviolet rays by a fluorescent ink presence/absence identifying sensor 33A, and secondary light from the fluorescent ink is detected and its presence/absence is identified by the sensor 33A. Besides, the form of the fluorescent ink is recognized. The fluorescent ink is irradiated with the excited light of an excited wavelength different from the sensor 33A by a fluorescent ink exciting characteristic identifying sensor 33B. Based on data detected by the respective sensors 32, 33A and 33B, an identification data processing part 34 performs identifying and discriminating processing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security authenticating method and system for authenticating an automatic machine handling securities, such as an automatic teller machine, and more particularly, to a secondary light when irradiated with excitation light. Banknotes, lottery tickets such as lottery tickets, race and horse racing boat voting tickets, admission tickets, boarding tickets, expressways, telephones, use tickets for various facilities, securities, bonds, stock certificates, book certificates, etc. This method is effective when applied to securities authenticity discrimination methods and systems for discriminating the authenticity of securities including those that have value by being printed and stamped on paper sheets, sheet films, and cards such as department store tickets. It is about technology.

[0002]

2. Description of the Related Art As a conventional technique, for example, by irradiating ultraviolet rays (light having a wavelength shorter than 400 nm), the presence or absence of fluorescence of ink as a secondary light is discriminated, and infrared rays (700 n
(a light having a wavelength longer than m) is applied to discriminate whether or not infrared light is emitted from the ink which is the secondary light.

[0003] This is because most of the printing of securities uses general inks that do not emit secondary light, and fluorescent inks and infrared light emitting inks are used only in specific places for preventing forgery. is there.

[0004] As described above, when discriminating the authenticity of securities, in addition to confirming the matching of print patterns with visible light (light of 400 nm to 700 nm), a specific place for preventing forgery is irradiated with ultraviolet light or infrared light. It has been confirmed that the printed portion emits fluorescent light or infrared light.

[0005] The above-mentioned method of authenticity discrimination of securities is described in, for example, Japanese Patent Application Laid-Open No. 58-86677.

[0006]

In the authenticity discrimination method described above, a specific place for preventing forgery is irradiated with ultraviolet rays or infrared rays, and it is confirmed whether or not the printed portion has fluorescence emission or infrared emission. Since the authenticity is determined based on the color and shape of the emitted light, it is not determined whether the luminescent inks such as the fluorescent ink and the infrared luminescent ink are the same.

However, a fluorescent marker pen that emits fluorescent light is easily available, and an ultraviolet light source is commercially available as a fluorescent lamp such as a black light (an ultraviolet fluorescent lamp in which visible light is cut by the filter characteristics of the glass tube itself). At present, forgery of colors and shapes to emit light is becoming possible, and the above-mentioned authenticity discrimination method can only expect the ability of auxiliary means for preventing forgery, and cannot necessarily discriminate forged ones. there were.

[0008] The present invention has been made to solve the above problems, and an object of the present invention is to provide a technique capable of more accurately discriminating the authenticity of securities.

[0009]

SUMMARY OF THE INVENTION Among the inventions disclosed in the present application, the outline of a representative one will be briefly described.
It is as follows.

For the purpose of preventing forgery, in a security authenticity discriminating method for discriminating the authenticity of a security imprinted on a specific portion with a material emitting secondary light when irradiated with excitation light, A first discriminating step of determining a print pattern with visible light / infrared light and a magnetic ink print pattern, and the emission of secondary light generated when the mark of the securities is irradiated with excitation light. It comprises a second discriminating step for judging the presence / absence and its shape pattern, and a third discriminating step for discriminating the wavelength dependence of the excitation sensitivity of the material of the engraving. To determine the authenticity of

The second discriminating step includes determining whether or not secondary light is emitted in an ultraviolet region of the material used for the marking portion of the securities and a shape pattern thereof, and determining the third discriminating step. Determines the presence or absence of excitation sensitivity of the material used at the engraved location with the excitation light having a longer wavelength than the wavelength in the ultraviolet region used in the second identification step.

Further, for the purpose of preventing forgery, in a securities authenticity discrimination system for discriminating the authenticity of securities imprinted on a specific portion with a material emitting secondary light when irradiated with excitation light, An insertion slot for receiving the insertion, an entry detecting means for detecting whether the securities have entered, and a second unit for measuring the external dimensions of the securities, a print pattern using visible light / infrared light, and a magnetic ink print pattern. (1) authenticity discriminating means, second authenticity discriminating means for measuring the emission color and shape of the engraved portion by ultraviolet rays, and excitation in a wavelength range other than the excitation wavelength range of the second authenticity discriminating means. Third authenticity discriminating means for measuring sensitivity, discrimination judgment processing means for judging authenticity discrimination based on the measurement result by each authenticity discriminating means, and transporting the securities to each authenticity discriminating means. Transport means for performing

[0013]

FIG. 1 shows the configuration of an automatic teller machine (hereinafter abbreviated as ATM) for authenticating bills as an embodiment of a system for authenticating securities according to the present invention. FIG.

The securities mentioned here include various lottery tickets such as banknotes, lottery tickets, voting tickets for horse races and horse races, admission tickets, boarding tickets, expressways, telephones, use tickets for various facilities, securities, bonds, stock certificates, etc.
Shows the value added by printing and engraving on paper sheets, sheet films, and cards such as book coupons and department store coupons.

As shown in FIG. 1, the ATM 1 according to the present embodiment includes a deposit / withdrawal port 2 for accepting bills, a bill discriminating section 3 for discriminating the authenticity of bills, and a safe 4A provided for each bill type.
To 4C. In addition, a transport unit, a deposit / withdrawal management unit, and a control unit of each unit which are not directly related to the present invention are not illustrated.

As shown in FIG. 2, the bill discriminating section 3 includes an entry detection sensor 31 for detecting whether a bill has entered, a determination of the external dimensions of the bill, a determination of a print pattern using visible light / infrared light, A denomination authenticity sensor 32 for determining an ink printing pattern, a fluorescent ink presence / absence sensor 33A for measuring a light emission color and a shape by ultraviolet rays, and a detection wavelength range other than the fluorescence ink presence / absence sensor 33A (other than ultraviolet rays)
Fluorescence ink excitation characteristic discrimination sensor 3 for detecting fluorescence when irradiating visible light to measure the excitation sensitivity in the wavelength range of
3B, a fluorescent sensor 33 for obtaining data for performing high-accuracy fluorescent ink authenticity discrimination, a discrimination data processing unit 34 for performing discrimination determination processing based on data detected by the various sensors, and the discrimination data A result data transmitting unit 35 for transmitting the result data subjected to the discrimination determination processing by the processing unit 34 to a control unit (not shown).

Next, the fluorescent sensor according to the present embodiment will be described. FIG. 3 is a diagram for explaining the fluorescent sensor 33 of the bill validator 3 in the present embodiment.

In an ATM for a specific bill (determined by a country name, a denomination, and a year of issuance), in addition to the above-described authenticity discrimination of the denomination, judgment of a printing pattern by the fluorescent ink stamped on the bill is performed. In some cases it is effective to discriminate bills.

This is because ink that emits visible light fluorescence when a specific portion of a specific bill is irradiated with ultraviolet light is used. The presence / absence / intensity / shade of this fluorescence pattern is detected by a fluorescence sensor 33, It is possible to discriminate the deposited banknote from the detection result.

As described above, the fluorescent sensor 33 of this embodiment is composed of the two fluorescent ink presence / absence discriminating sensors 33A and the fluorescent ink excitation characteristic discriminating sensor 33B.
As shown in (1), the deposited banknote is configured such that data is first detected by the fluorescent ink presence / absence discriminating sensor 33A, and then conveyed and data detected by the fluorescent ink excitation characteristic discriminating sensor 33B.

The fluorescent ink presence / absence discrimination sensor 33A is shown in FIG.
As shown in FIG. 5, the fluorescent ink 10 printed on the banknote 5 is irradiated with the excitation light 14A from the ultraviolet light source 11A, and the secondary light 15A from the fluorescent ink 10 is detected by the detector 13A via the filter 12A. To detect and discriminate the presence or absence. Although not shown in the present embodiment, the fluorescent ink presence / absence discrimination sensor A may include a recognition unit that recognizes the shape of the fluorescent ink. This recognition means uses, for example, a conventional pattern matching technique.

As the filter 12A, a filter adapted to the emission wavelength of the secondary light 15A of the fluorescent ink 10 or an ultraviolet cut filter is used.

Further, when a plurality of fluorescent inks are mixedly printed at the same location, secondary light having a plurality of wavelengths is emitted for the same excitation wavelength. A filter having a different wavelength is provided on the filter side. Thereby, accuracy can be improved.

The fluorescent ink excitation characteristic discrimination sensor 33B is
It has the same configuration as the fluorescent ink presence / absence discrimination sensor 33A, but is irradiated by the light source 11B with excitation light 14B having an excitation wavelength different from that of the light source 11A. At this time, a filter having a wavelength capable of detecting the secondary light 15B for the light source 11B is used as the filter 12B.

The different excitation wavelengths are determined by the characteristics of the fluorescent ink used in the securities to be identified.

In the ATM of this embodiment, as a specific example of the irradiation with the different excitation wavelengths, the case where the fluorescent ink of a banknote is distinguished from the fluorescent ink of a fluorescent felt-tip pen or the like applied in a printing pattern similar to the banknote will be described. I will.

In this case, the fact that there is a physical difference between the fluorescent ink used for the bill and the fluorescent ink used for the felt-tip pen is used. That is, the fluorescent ink used in a commercially available fluorescent sign pen has an excitation sensitivity in addition to the ultraviolet region.

FIG. 4 shows an example of the excitation sensitivity distribution of these fluorescent inks. FIG. 4A shows an example of a fluorescent ink used for a banknote having excitation sensitivity only in an ultraviolet light region (light emission is visible light indicated by a broken line). On the other hand, FIG. 4B shows an example of a fluorescent ink such as a felt-tip pen having excitation sensitivity in an ultraviolet light region and a visible light region.

As shown in FIG. 4, the sensitivity and wavelength characteristics (wavelength dependence) of the two fluorescent inks are different. In particular, fluorescent inks such as felt-tip pens have high excitation sensitivity even in the visible light region (secondary light). Is emitted).

Therefore, when performing authenticity discrimination of these fluorescent inks, the wavelength of the excitation light 14B emitted from the light source 11B of the fluorescent ink excitation characteristic discrimination sensor 33B is set to a wavelength slightly longer than the ultraviolet light range. It should be noted that how long the length is should be determined based on the excitation characteristics of the fluorescent ink.

In a similar manner, it is also possible to discriminate a material having excitation sensitivity (emitting secondary light) in three or more wavelength regions. In this case, instead of the light source 11B, excitation of another wavelength is possible. This can be performed by using a light source and adding a filter and a detector having a wavelength to be detected.

As shown in FIG. 5, the fluorescent ink presence / absence discrimination sensor 33A and the fluorescence ink excitation characteristic discrimination sensor 33A
B may be provided with light amount detectors 16A and 16B for detecting the light emission amounts of the light sources 11A and 11B, respectively.

The provision of the light quantity detectors 16A and 16B shown in FIG. 5 enables not only discrimination of excitation sensitivity but also absolute measurement of excitation sensitivity of fluorescent ink, that is, measurement of secondary light output / excitation light output. Therefore, forgery discrimination with higher accuracy becomes possible.

As described above, even when a plurality of fluorescent inks are mixedly printed in the same place, the same operation can be performed by providing a plurality of excitation light sources corresponding to each fluorescent ink and a corresponding filter. it can.

Next, the processing of the ATM according to the present embodiment and the processing of the bill validator 3 will be described. FIG. 6 is a flowchart for explaining the process of the bill validator 3 of the present embodiment.

The ATM according to the present embodiment has a first
The banknotes 5 received from the banknotes are separated one by one and conveyed to the banknote discriminating section 3 through the banknote conveyance path R1.

As shown in FIG. 6, the bill validator 3 determines whether or not a bill has entered by the entry detecting sensor 31 provided inside the bill validator 3 (step 601).
If the vehicle has entered, the denomination authenticity sensor 32 starts collecting bill data (step 602).

Thereafter, the discrimination data processing section 34 determines the denomination of the bill at the stage when the bill data has been collected,
A process for determining the authenticity is performed (step 603). They perform denomination judgment and authenticity discrimination based on a combination of judgment of external dimensions of a bill, judgment of a print pattern with visible light / infrared light, judgment of a magnetic ink print pattern, and the like. In addition, ATM
In some ATMs, the deposited banknotes are transferred to the withdrawal banknotes in order to reduce the amount of cash (the money to be prepared for withdrawal) in the ATM (to improve the funding efficiency). Is performed to confirm that the bill is not torn or dirty.

Next, data of the fluorescent part is collected by the fluorescent sensor 33 shown in FIGS. 3 and 5 (step 604).

Thereafter, when the data of the fluorescent portion has been collected, the discrimination data processing section 34 starts the fluorescent portion discriminating process (step 605). In this discrimination process, for example, a determination is made that the fluorescence output pattern for ultraviolet light is similar to a bill for which authenticity is discriminated within a determination value, and a determination is made that the fluorescence is not more than a certain value by irradiation with visible light.

Then, the result of the above-described discrimination processing is comprehensively determined (step 606), and the result of determining the denomination and authenticity is determined by the AT.
The data is transmitted to the control unit of M1 (not shown in FIG. 1) (step 607).

The control unit of the ATM 1 converts the bills passed through the transport path R3 into 4A, 4B, 4C based on the discrimination result of the bill discriminating unit 3.
Are stored in a plurality of safes 4 provided for each type of money. At the time of the dispensing operation, the control unit instructed by the ATM1 user dispenses the bills from the corresponding denomination safes 4A, 4B, and 4C while separating the bills one by one, and deposits the bills into the deposit / dispense port 2 through the transport path R2. Transport. In addition, the transport path may be designed so as to pass through the bill validator 3 in order to confirm the bill at the time of dispensing.

Therefore, as described above, in addition to the denomination authenticating sensor for determining the external dimensions of the banknote, determining the printing pattern using visible light / infrared light, and determining the printing pattern of the magnetic ink, the conventional type denomination sensor is used. Fluorescent ink used in banknotes with a fluorescent ink presence / absence sensor using ultraviolet light and a fluorescent ink excitation characteristic detection sensor that detects fluorescence when irradiating visible light to measure excitation sensitivity in wavelength regions other than ultraviolet light By judging the difference between and a fluorescent ink such as a felt-tip pen, it is possible to more accurately discriminate between true and false bills.

The case where the fluorescent ink is printed for preventing forgery has been described above as an example. The same applies to the case where the excitation light is visible light or infrared light. That is, in this case, by selecting the wavelength of the light source and the corresponding light source and the wavelength of the filter, the discrimination can be performed in the same manner as the fluorescent material.

In the present embodiment, it is assumed that a genuine security has a fluorescent ink having a single excitation light region and a fake has a fluorescent ink having a plurality of excitation light regions.
Alternatively, when both have a plurality of excitation light regions, a comparison between the excitation wavelengths of both is a true / false discrimination method.

Further, forgery can be prevented by using a material having excitation sensitivity not in one wavelength region but in a plurality of wavelength regions as a stamp. It is to judge the matching of the detailed characteristics of the material used for forgery prevention, and it is possible to prevent forgery using a material that can be easily obtained by a forger.

That is, there is a great effect of preventing forgery other than systematic forgery.

Further, if a special material is used for the excitation sensitivity distribution of the forgery prevention material, it becomes necessary for the forgery until the development of the material, and a high forgery prevention effect can be selected by eliminating the economic advantage for the forger. .

As described above, the invention made by the present inventor is:
Although specifically described based on the embodiment, the present invention
It is needless to say that the present invention is not limited to the above-described embodiment, but can be variously modified without departing from the scope of the invention.

[0050]

The effects obtained by the representative ones of the inventions disclosed in the present application will be briefly described as follows.

By adding the measurement of the excitation sensitivity of the marking in the wavelength region other than the ultraviolet light, it is possible to more accurately discriminate the authenticity of securities.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an ATM for performing authenticity discrimination of bills according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a configuration of a bill validator 3 according to the embodiment.

FIG. 3 is a diagram for explaining a fluorescent sensor 33 of the bill validator 3 in the embodiment.

FIG. 4 is a diagram illustrating an example of an excitation sensitivity distribution of a fluorescent ink.

FIG. 5 is a diagram for explaining another fluorescence sensor 33 of the present embodiment.

FIG. 6 is a flowchart illustrating a process performed by the bill validator 3 according to the embodiment.

[Explanation of symbols]

1 ATM, 2 deposit / withdrawal port, 3 bill validator, 4A, 4
B, 4C ... safe, 5 ... banknote, 10 ... fluorescent ink, 11 ...
Light source, 12 ... filter, 13 ... detector, 14 ... excitation light,
Reference numeral 15: secondary light, 16: light amount detector, 31: entry detection sensor, 32: denomination authenticity discrimination sensor, 33: fluorescence sensor, 3
3A: fluorescent ink presence / absence sensor, 33B: fluorescent ink excitation characteristic identification sensor, 34: identification data processing unit, 35 ...
Result data transmission unit, R1, R2, R3 ... bill transport path.

Claims (3)

[Claims] 1. A security authenticity discriminating method for discriminating the authenticity of securities imprinted on a specific portion with a material emitting secondary light when irradiated with excitation light for the purpose of preventing forgery. A first discriminating step of judging an external dimension, a visible light / infrared light print pattern, and a magnetic ink print pattern;
Second to determine whether or not the next light is emitted and its shape pattern
And a third discriminating step of discriminating the wavelength dependence of the excitation sensitivity of the material of the engraving, wherein the authenticity of the securities is discriminated based on the discrimination results of these three steps. Securities authenticity discrimination method. 2. The security authenticity discriminating method according to claim 1, wherein the second discriminating step includes emitting or not emitting secondary light in an ultraviolet region of a material used for a marking portion of the securities. And the determination of the shape pattern thereof. The third discrimination step includes the presence or absence of excitation sensitivity of the material used for the engraved portion with the excitation light having a longer wavelength than the wavelength in the ultraviolet region used in the second discrimination step. A security authenticity identification method. 3. A security authenticity discrimination system for discriminating the authenticity of securities imprinted on a specific portion with a material emitting secondary light when irradiated with excitation light for the purpose of preventing forgery. An insertion slot for receiving the insertion, an entry detecting unit for detecting whether the securities have entered, and a second unit for measuring the external dimensions of the securities, a print pattern using visible light / infrared light, and a magnetic ink print pattern. 1
Authenticity discriminating means, second authenticity discriminating means for measuring the emission color and shape of the engraved portion with ultraviolet rays, and excitation sensitivity of the second authenticity discriminating means in a wavelength range other than the excitation wavelength range. A third authenticity discriminating unit that measures the number of authenticity, a discrimination judgment processing unit that judges the authenticity discrimination based on the measurement result of each of the authenticity discriminating units, and transporting the securities to each of the authenticity discriminating units. A security authenticating system, comprising: transport means.