JP3292863B2 - Machine reading method and machine reading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for optically reading, from a printing surface, information given to a print sheet using a sheet having a machine identification function as a print sheet, and a machine reader.

[0002]

2. Description of the Related Art With respect to printed matter, such as banknotes, securities, and admission tickets, which require forgery prevention, with the progress of copy technology using color copying and color scanners, authenticity discrimination in the general distribution process is performed, for example. Measures that can be easily secured even with the naked eye, such as pearl printing, holograms, cuts, streaks, colored fibers, and polka dot fibers, and measures that can ensure authenticity determination for machine reading processing for labor saving are important. It has become. In particular, measures for machine reading
With the spread of automatic ticket vending machines and automatic cashing machines, their importance is increasing.

[0003] Conventionally used machine-readable media include magnetic cards used as telephone cards, P cards.
There are barcodes used in the OS system, printed materials using special inks, and the like, and reading means utilizing their respective characteristics is used for authenticity determination and information reading. For example, a magnetic card is a plastic card on which a magnetic recording medium is stuck, and information can be written by a magnetic writer, and the magnetic recording can be read by a magnetic reader. The feature of this magnetic card is that it can be used repeatedly by rewriting. In the barcode, information is written by a combination of a bar (black line) and a space (white line) called a line code, and the information is read by a barcode reader. The bar code reader scans a bar code with LED light or laser light to read a line code. The feature of this barcode method is that it can be mass-produced by printing at a low cost, and the cost is extremely low. Also, since laser light is used for reading, data can be read without contact, Can read complicated shapes. On the other hand, some printed materials using a special ink have a function relating to authenticity discrimination by, for example, printing a fluorescent ink at a specified position and reading the fluorescence emission.

[0004] However, the magnetic card has the disadvantage that data is lost due to heat and a strong magnetic field because of magnetic recording. In the case of a barcode, since the reflected light is read directly by a laser beam or the like, it is necessary to place the barcode in a place where humans can easily see it, and anyone who knows the meaning of the line code can easily decode the data. There are drawbacks. Also, in the case of printed materials using barcodes or special inks, if the characteristics of the substances used in the inks are known, they can be counterfeited by the advancement of the duplication technology using color copying and color scanners described above. There was a disadvantage that it was easy.

[0005]

As a countermeasure to solve such a problem, for example, a function which has already been filed by the present inventor and which can be detected in the ultraviolet or near-infrared region without being recognized by the naked eye (visible light region). Machine identification paper (Japanese Patent Application No. 5)
-267798 "Machine identification paper"). This machine identification paper has almost the same value as the spectral reflectance of the paper in the visible light range, but a substance having a spectral reflectance different from the spectral reflectance of the paper in the ultraviolet or near-infrared wavelength range is applied to the paper. On the other hand, it is a machine identification sheet characterized by being provided as information, and the machine identification sheet itself is a sheet having a function capable of coping with machine identification processing. Therefore, if the machine identification paper is used as a printing paper for printed matter which requires forgery prevention such as banknotes, securities, confidential documents, coupons, admission tickets, etc. By measuring the amount of spectral reflection of the substance possessed, it is possible to mechanically read necessary information such as true / false judgment and type judgment. Furthermore, there is no loss of data due to heat or a strong magnetic field as in the case of a magnetic card. In addition, since the machine identification paper is provided with a substance that cannot be viewed in the visible light range,
Solving the above-mentioned disadvantages of the conventional machine-readable media, such as the inability to easily decode data as in the case of barcodes,
It is extremely effective as a medium for printed matter.

However, a device for measuring the amount of spectral reflection, for example, a spectrophotometer, is used to determine the authenticity or type of a printed material using the machine identification paper. However, in the above-described determination using a ready-made device for measuring the amount of spectral reflection, it takes time to measure the amount of spectral reflection, and furthermore, whether or not the printed matter is authentic is determined by looking at the measurement result of the amount of spectral reflection. Therefore, it is not a measure that can easily ensure the authenticity of the authenticity in the general distribution process described above,
As described above, the measurement of the amount of spectral reflection requires time and human labor, so that this is not a measure that can secure the authenticity determination for the machine reading processing for the purpose of labor saving.

[0007] An object of the present invention is to set a printed material using a substrate such as the above-mentioned machine identification paper in an apparatus, and simultaneously measure the spectral reflection amounts in the visible light region, the ultraviolet region and the near-infrared region, and use it for the printed material. Mixed or overcoated base material such as machine identification paper
Using the method of analyzing Ride grant information is to provide a reading method and a reading device and performing authenticity discrimination or type judgment of said printed matter instantly.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a conveying section for conveying the printed matter, and a lamp for emitting light in a predetermined wavelength range of visible light, ultraviolet light, and near infrared light. And a light-receiving sensor that receives light in a predetermined wavelength range of visible light and ultraviolet and near-infrared reflected from the printed matter, and a spectral reflection amount in a predetermined wavelength range of visible light, ultraviolet and near-infrared. The detection unit, which detects the visible light region and the ultraviolet region detected by the detection unit and the waveform of the spectral reflection amount of the predetermined wavelength region of the near infrared region, the visible light region and the ultraviolet region and the predetermined region of the near infrared region, respectively. The waveform binarized by the reference level is a waveform of the spectral reflection amount in a predetermined wavelength range of the visible light range and the ultraviolet range and the near-infrared range of the genuine product of the printed matter, which is grasped in advance, and is converted into the visible light range and the ultraviolet range. And near infrared region It has a discriminating unit that instantaneously discriminates whether or not the waveform is the same as the binarized waveform according to the reference level. In the visible light range, the spectral reflectance is almost the same as that of the paper, but in the ultraviolet or near infrared range. In the specified wavelength range, a substance having a spectral reflectance different from the spectral reflectance of the paper is mixed and overcoated on the paper, and information such as true / false discrimination of the printed matter using the machine identification paper is optically obtained. The invention is characterized by a machine reading method and a machine reading device.

[0009]

The machine reading apparatus having the above-mentioned structure converts a genuine printed matter using the above-mentioned machine identification paper into a waveform of a spectral reflection amount in a predetermined wavelength range of a visible light region, an ultraviolet region, and a near infrared region, which is grasped in advance. Waveforms binarized by predetermined reference levels in the visible light region, the ultraviolet region, and the near-infrared region, and the visible light region, the ultraviolet region, and the predetermined wavelength region in the near-infrared region obtained by the machine reader having the above-described configuration. Since it is possible to instantaneously determine whether or not the waveform of the spectral reflection amount and the waveform binarized by the predetermined reference level in each of the visible light region, the ultraviolet region, and the near infrared region are the same waveform,
True / false determination for machine reading processing for labor saving can be secured. Further, the machine reading device having the above-described configuration is capable of detecting a counterfeit product by a method of obtaining absorption of ultraviolet light or infrared light with black ink or the like on the machine identification paper or a printed material using the machine identification paper. The waveform of the spectral reflection amount in the optical region is binarized by a predetermined reference level, and the waveform of the spectral reflection amount in the visible light region of a printed material using machine identification paper is binarized by the predetermined reference level. Since it has a function of determining whether or not the obtained waveform is the same waveform, it also effectively works for authenticity determination of a counterfeit product by a method of absorbing ultraviolet or infrared rays with black ink or the like.

[0010]

EXAMPLES The present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

FIG. 1 is a schematic view of a machine reading device. (1) is a machine identification paper described in the above-mentioned Japanese Patent Application No. 5-267798, for example, in the visible light region, has substantially the same value as the spectral reflectance of the paper;
Although it is not visible even when actually observed with the naked eye, 36
The paper is characterized in that titanium dioxide or the like is applied to the paper as a substance having a spectral reflectance different from that of the paper near 5 nm, and the paper itself has a function that can support machine identification processing. This is a printed matter using printing paper. (2) is a transport section for transporting the printed matter (1), and the visible light lamp (3) is in a visible light range (400 to 700).
nm) a lamp equipped with a wavelength transmission filter, a visible light sensor (4) is a sensor that receives light having a wavelength in the visible light range, an ultraviolet lamp (5) is a lamp that emits light having a wavelength near 365 nm, and an ultraviolet sensor (6). ) Is a sensor that receives light having a wavelength around 365 nm, a near-infrared lamp (7) is a lamp that emits light having a wavelength around 950 nm,
The near-infrared sensor (8) is a detection unit constituted by a sensor that receives light having a wavelength near 950 nm, and (9) is the visible light sensor (4) and the ultraviolet sensor (6).
And a determination unit that draws a spectral reflection amount received by the near-infrared sensor (8) on a waveform and determines the authenticity of the waveform. The shielding plate (α) is a visible light portion composed of a visible light lamp (3) and a visible light sensor (4), and an ultraviolet lamp (5).
Between the ultraviolet light portion constituted by the infrared sensor (6) and the near infrared light portion constituted by the near-infrared lamp (7) and the near-infrared sensor (8) so that light of each wavelength is not mixed. It shields. In order to optically read the information given to the paper of the printed matter (1) from the printing surface, the above-described machine reading device including the transport unit, the detection unit, and the determination unit was manufactured. The determination method will be described later.

The substrate (1) read by the machine reading device is:
Although paper, film, plastic, and the like are conceivable, in this embodiment, the base material is described as paper. FIG. 2 is a cross-sectional view of a printed matter (1) using the printing paper prepared by mixing titanium dioxide in a desired position in a belt shape. (10)
Is 80 parts of hardwood bleached kraft pulp and 20 parts of softwood bleached kraft pulp, and a small amount of filler and internal chemicals are added to make a furnish. A portion where the mixed stock is mixed into a strip in the above-mentioned furnish (hereinafter, referred to as a portion where 5 parts of titanium dioxide are mixed in a strip), (12) is 2 parts of titanium dioxide in the above-mentioned furnish. (13) is a part obtained by mixing the paper stock obtained by mixing the above with the paper part (hereinafter referred to as a part obtained by mixing two parts of titanium dioxide into a strip) in the above-mentioned finished paper stock. A commercially available process black ink is offset with a halftone dot area of 25% on the surface of printing paper composed of a portion (11) in which 5 parts of titanium dioxide are mixed in a strip and a portion (12) in which 2 parts of titanium dioxide are mixed in a strip. Printed surface is printed Printed materials for reading optically the information of the titanium dioxide was applied to the paper from the printed surface were prepared.

FIG. 3 shows 200 to 80 of the surface of the printed matter (1).
FIG. 3 is a spectral reflectance curve at 0 nm. In FIG. 3, (14), (15) and (16) show the printed surface (13) in FIG. 7 is a spectral reflectance curve of a printing surface of a printing surface of No. 2 and a printing surface of a portion (12) in which 2 parts of titanium dioxide are mixed in a belt shape. In this figure, the substance is visible with the naked eye.
In the visible light range of 00 to 700 nm, the spectral reflectance (14) of the printed surface, the spectral reflectance (15) of the printed surface where 5 parts of titanium dioxide are mixed, and the printed surface of the portion where 2 parts of titanium dioxide are mixed. Although the spectral reflectances of (16) and (16) have the same value, at 365 nm in the ultraviolet region, the spectral reflectance (14) of the printing surface is about 35%, whereas titanium dioxide is 5%. The spectral reflectance (15) of the printed surface of the partially mixed portion is about 15 %, and the spectral reflectance (16) of the printed surface of the portion mixed with two portions of titanium dioxide is approximately 20 %, each of which corresponds to the printed surface. There was a difference in spectral reflectance. Printed matter using the printing paper having such characteristics (1)
Is inserted into the machine reader of FIG. 1, the transport section (2) starts, and the printed matter (1) moves into the machine reader. At this time, light having a wavelength in the visible light range emitted from the visible light lamp (3), light having a wavelength around 365 nm emitted from the ultraviolet lamp (5), and 950 nm emitted from the near infrared lamp (7). Visible light sensors (4) and 365, each of which reflects light having a wavelength in the vicinity, are reflected on the surface of the printed matter (1), and each receive a wavelength in the visible light range.
An ultraviolet ray sensor (6) for receiving a wavelength of about 950 nm and a near-infrared sensor (8) for receiving a wavelength of about 950 nm, and the visible light, ultraviolet, and near-infrared light in the lateral direction of the surface of the printed material are separated. The amount of reflection is measured.

FIG. 4 is a diagram showing a waveform when the spectral reflection amount of a wavelength near 365 nm is measured in the lateral direction of the printed surface of the printed matter (1) in FIG. In this figure, a waveform (18) corresponding to the printed surface of (11) in FIG.
And (2) of titanium dioxide mixed in a belt shape.
The waveform (19) corresponding to the printing surface of (2) is lower than the waveform (17) of the spectral reflection amount corresponding to (13) of FIG. In this case, the waveform becomes as shown in FIG.
And "1". This binarized waveform is
3 in the horizontal direction of the genuine product's printing surface that is known in advance
A waveform obtained by binarizing the waveform of the spectral reflection amount at a wavelength near 65 nm at a predetermined reference level (x) (hereinafter, a true product 365)
The vicinity of nm is called a binarized waveform. ), The authenticity of the printed matter (1) can be determined.
That is, FIG. 6B is a binarized waveform near 365 nm of the genuine product, and when the waveform of FIG. 5A is superimposed on the binarized waveform, the reference level (a) and the reference level ( b), between reference level (e) and reference level (f), between reference level (j) and reference level (k) are "1",
In addition, a waveform having a waveform between the reference level (c) and the reference level (d) and a waveform between the reference level (g) and the reference level (h) being "0" is determined to be a genuine product; Set to. The reference level (b) and the reference level (c), the reference level (d) and the reference level (e), the reference level (f) and the reference level (g), the reference level (h) and the reference level ( The range between j) is a range in which the variation of the waveform is allowed, and no determination is made in this allowable range. Such a criterion, that is, a spectral reflection amount at a wavelength near 365 nm in the horizontal direction of the surface of the object to be measured is drawn in a waveform, and a binarized waveform based on a predetermined reference level (x), and a binary value near 365 nm of a genuine product are binarized. A method for determining whether or not the converted waveforms are the same waveform is described by the determination unit (9) in FIG.
Was memorized.

In the machine reading apparatus of FIG. 1 configured under the above setting conditions, two types of printed matter, that is, as shown in FIG. 2 described above, 5 parts of the titanium dioxide are strip-shaped on the paper portion (10). A commercially available process black ink having a dot area of 25% was applied to the surface of the printing paper comprising the mixed portion (11) and the portion (12) in which 2 parts of the titanium dioxide were mixed in a belt shape.
And 10 prints obtained by offset printing the commercially available process black ink with a dot area of 25% on the surface of a commercially available printing paper containing no optical brightener and 10 prints obtained by offset printing in (1). And a reading was taken. as a result,
The printed matter using the printing paper in which titanium dioxide was mixed in a belt shape could be genuinely distinguished from the genuine product, and the printed matter using the commercially available printing paper could be instantaneously distinguished from the counterfeit one without erroneous determination. Therefore, it was confirmed that the machine reading device can easily secure the authenticity determination for the machine reading process for the purpose of labor saving in the general distribution process of the printed matter (1).

However, in the above-described true / false determination of only the ultraviolet region, in the case of the printed matter (1) using the machine identification paper provided with a substance having an ultraviolet absorbing property, for example, the machine identification paper provided with titanium dioxide. Even without using a paper to which a substance having ultraviolet absorbing properties is applied in advance, the absorption of ultraviolet rays can be obtained with black ink or the like. The imitation of the printed matter (1) (hereinafter, referred to as the “printed matter”) in which the amount of decrease in the amount of reflection was intended to be obtained by the printed matter density such as black ink
It is called imitation with black ink. ) May be misidentified as genuine. However, since the machine reading device is a device characterized by a method of simultaneously discriminating a waveform in the visible light region, a waveform in the ultraviolet region, and a waveform in the near-infrared region and comprehensively determining the waveform, the machine reading device uses the black ink or the like. Even if the imitation product is determined to be genuine in the authenticity determination in the ultraviolet region, it is determined to be a fake product in the authenticity determination in the visible light range, so that the imitation product using the black ink or the like is finally determined to be a fake product. .

(Example 2) On the surface of a commercially available printing paper containing no fluorescent whitening agent, the spectral reflection amount of the titanium dioxide-added portion was determined at the same position as the titanium dioxide-added portion in FIG. After printing the black ink at a print density such that the amount of the spectral reflection becomes as low as the amount of the reduction, a commercially available process black ink is used in the same manner as the printing on the paper surface in Example 1. Offset printing was performed at 25% to produce a copy (not shown) of the printed matter (1). The imitation product and the printed matter (1) were read into the machine reading device, respectively, to determine authenticity. As a result, in the true / false judgment in the ultraviolet region, the waveform of the spectral reflection amount near 365 nm in the horizontal direction of the printing surface of the printed matter (1) becomes the waveform shown in FIG. The waveform of the spectral reflection amount near 365 nm in the lateral direction of the imitation product printed surface becomes a waveform as shown in FIG. 7, and the waveform of FIG. 4 and the waveform of FIG. Was. Therefore, the waveforms obtained by binarizing the waveform of FIG. 4 and the waveform of FIG. 7 at the predetermined reference level (x) become the same waveforms as shown in FIG. 5 and FIG. 8, respectively. As a result of collating with the converted waveform, the imitation product of the printed matter (1) and the black ink or the like was determined to be a genuine product.

However, in the true / false determination in the visible light region, the waveform of the spectral reflection amount in the visible light region in the lateral direction of the printing surface of the printed matter (1) shows a portion where the spectral reflection amount decreases as shown in FIG. 4, the waveform is clearly different from the waveform measured in the ultraviolet region in FIG. 4, whereas the waveform of the spectral reflection amount in the visible light region in the horizontal direction of the imitation product printed surface with black ink is shown in FIG. A waveform having a reduced portion of the spectral reflection amount similar to the waveform measured in the ultraviolet region of FIG. Therefore, in the waveform obtained by binarizing the waveform of FIG. 9 and the waveform of FIG. 7 at the predetermined reference level (x), the printed matter (1) is a waveform represented by only “1” as shown in FIG. On the other hand, the imitation product made of black ink or the like has waveforms represented by “0” and “1” as in FIG. 8, and the waveforms of FIG. 10 and FIG. The result of collating the waveform of the spectral reflection amount in the visible light region with a waveform binarized at a predetermined reference level (x) (hereinafter, referred to as a binarized waveform of the genuine visible light region):
The printed matter (1) was determined to be a genuine product, while the imitation product using black ink or the like was determined to be a fake product. As a result, the machine reading device finally determined that the printed matter (1) was a genuine product, and the imitation product of the black ink or the like was a fake product based on the determination result in the ultraviolet region and the determination result in the visible light region. Judged instantly.

The waveforms (18) and (19) in FIG.
As shown by the above, since the amount of reduction in the spectral reflection amount of the portion where titanium dioxide is mixed is different by changing the amount of titanium dioxide applied, this characteristic is used to make the reference level (x) above. , A new constant reference level (y)
By setting, in addition to the example of the authenticity determination,
It is possible to determine the authenticity with higher accuracy. For example, a reference level for binarizing the waveform of the spectral reflection amount in FIG. 4 is set by the reference level (x) and the reference level (y), and is located between the reference levels (x) and (y). FIG. 11 shows a binarized waveform diagram when the signal is set to "0" and the signal not located between the reference levels (x) and (y) is set to "1". If the binarized waveform in which "0" is present is a genuine product and the non-existent waveform is a counterfeit product, a plurality of reference levels are set based on the difference in the amount of reduction in the spectral reflection amount. It is possible to perform highly accurate truth / false judgment.

Further, by changing the amount of titanium dioxide applied to the machine identification paper, the reference level (z) and the reference level (w) in addition to the predetermined reference levels (x) and (y) shown in FIG. With the new setting, the comparison combination of the spectral reflection amount and the reference level used for the authenticity judgment criterion is diversified, and precise judgment can be made. This diversified combination is printed on the machine identification paper, which is informationized and added to, for example, a coupon and the like as a market distribution area, a manufacturing history, and the like. It is possible to discriminate between authenticity and information and to identify information on products using (1), and it can also be used to track the occurrence of forgery or falsification of the printed surface, and thus the effect of suppressing forgery or falsification can be obtained. .

(Example 3) FIG. 12 shows a portion (11) in which 5 parts of titanium dioxide are mixed in a belt shape, a portion (12) in which 2 parts of titanium dioxide are mixed in a belt shape, and 5 portions of calcium carbonate in a sheet. overcoated portion (20), moieties混抄about 0.1 parts a Le Miniumu compound strip (21), said printing paper prepared by changing the applied spacing and impart number (Japanese Patent Application No. 5-267798) Is a plan view of a printed matter (22) (printed pattern is not shown) obtained by offset printing the commercially available process black ink with a dot area of 25% on the surface of the printing paper in the same manner as in Example 1 described above. to prepare a printed matter for reading optically the information of calcium carbonate and an infrared-absorbing material is titanium dioxide and the UV-reflecting material is a Le Miniumu compound is an ultraviolet absorbing material from the printing surface. FIG. 13 is a diagram showing a waveform when the spectral reflection amount at a wavelength near 365 nm is measured in the lateral direction of the printed surface of the printed matter (22) in FIG. In this figure, a waveform (18) corresponding to the printed surface of (11) of FIG. 12 in which 5 parts of titanium dioxide are mixed in a belt shape, and a printed surface of (12) in FIG. 12 in which 2 parts of titanium dioxide are mixed in a belt shape (20) and a waveform (2) corresponding to the printed surface of (20) in FIG.
3) is lower or higher than the waveform (17) of the spectral reflection amount corresponding to (13) in FIG. 12 (13) of the printing surface, and is binarized at a predetermined reference level (u) as shown in FIG. The waveform has two "0" portions. Further, the reference level is set to the reference level (u ′) and the reference level (t) in FIG. 13, and the waveform located at a portion lower than the reference level (u ′) or a portion higher than the reference level (t) is “0”. When the waveform located between the reference levels (u) and (t) is set to be "1" and binarized, a waveform having four "0" portions as shown in FIG. Was. As described above, by changing the setting of the reference level to be binarized, the number of “0” portions in the binarized waveform is different. For example, two “0” portions in FIG. It is also possible to determine the authenticity with the waveform to be performed, and use the waveform having four “0” portions in FIG. 15 as information such as the manufacturing history.

Further, regarding the position and width of the "0" portion and the "1" portion of the binarized waveform, the spectral reflection amount at a wavelength near 365 nm in FIG. In the waveform of FIG. 14 binarized by u), only the value of “1” is between the reference level (n) and the reference level (v), but the spectral reflection amount at a wavelength near 365 nm in FIG. In the waveform of FIG. 15 binarized by the level (u ′) and the reference level (t), between the reference level (n) and the reference level (v), between the reference level (p) and the reference level (q), , There is a portion having a value of “0” between the reference level (r) and the reference level (s), and a portion having a value of “1” exists between the reference level (n) and the reference level (p) and the reference level (q). ) And reference level (r) and between reference level (s) and reference level (v). Therefore, the interval between the reference level (m) and the reference level (n), the interval between the reference level (m) and the reference level (p), the reference level (m) and the reference level (q), the reference level ( m) and reference level (r), reference level (m) and reference level (s), reference level (m) and reference level (v), reference level (m)
The position and width of the "0" portion and the "1" portion of the binarized waveform by changing the setting of the binarized reference level by comparing the interval of the binarized reference level with the reference level (i). Could be read as information by identifying the difference in position and width. As described above, the authenticity of the printed matter (22) is determined by comparing the binarized waveform of the printed matter (22) at a predetermined reference level with the binarized waveform around 365 nm of the genuine product. At the same time, the type of the ultraviolet absorbing substance and the ultraviolet reflecting substance, the number of the applied substances, the applied amount of the substance, and the interval between the applied substances are changed by changing the setting of the reference level to be binarized to “0”. Information could be read from the combination of the number of existing parts, the position and width of the “0” part, and the position and width of the “1” part.

FIG. 16 shows the horizontal direction of the printing surface of the printed matter (22) in FIG.
It is a figure showing a waveform when measuring the amount of spectral reflection of a nearby wavelength. In this figure, about A Le Miniumu compound 0.1
Since the waveform (24) corresponding to the partial view 12 (21) in which the portions are mixed in a band shape is lower than the waveform (25) of the spectral reflection amount corresponding to the paper partial view 12 (13), the above-described embodiment is used. Similarly to 1, when binarized at a predetermined reference level (u '), a waveform as shown in FIG. 17 is obtained.
By comparing the spectral reflection amount near 0 nm with the binarized waveform, the authenticity of the printed matter (22) could be determined even in the near infrared region.

As described above, the machine reading apparatus using both the authenticity determination method according to the second embodiment and the authenticity determination method according to the third embodiment, that is, the waveform in the visible light range, the waveform in the ultraviolet range, and the An apparatus characterized by a discrimination method of simultaneously discriminating a waveform in the infrared region and making a comprehensive judgment can surely perform authenticity discrimination for a counterfeit product. Further, the type of the ultraviolet absorbing substance, the ultraviolet reflecting substance and the infrared absorbing substance, and the number of the substances to be applied, the amount of the substance applied, the width of applying the substance, and the interval of applying the substance and the substance were changed. Information given to the printing paper,
The machine reading device can read this information instantaneously from the printing surface, and can also determine the type of the printed matter from this information, although the use is diversified by the combination.

[0025]

According to the present invention, as described above, Japanese Patent Application No.
-267798 No. "Machine identification paper" Measures the spectral reflection amount in a predetermined wavelength range of visible light region, ultraviolet region and near-infrared region of a printed matter using printing paper as a printing paper, and sets the waveform of the spectral reflection amount to a predetermined value. Simultaneously identify whether or not the binarized waveform at the reference level is the same as the previously identified binarized waveforms of the visible light region, ultraviolet region, and near-infrared region of the genuine product. Since the determination can be made, the authenticity determination for the machine reading process for the purpose of labor saving in the general distribution process described above can be secured, and the authenticity determination for the counterfeit product can be surely performed. Further, by setting a plurality of predetermined reference levels, the information given to the printing paper of the printed matter can be identified in detail, so that the type identification can be performed simultaneously with the authenticity determination. In addition, the type of UV absorbing material, UV reflecting material and
The number of the substance to be applied, the amount of the substance to be applied, the width of the substance to be applied, and the information applied to the printing paper in which the interval between the substance and the substance is changed are frequently used by the combination thereof. It is also possible to read these information instantly from the printing surface. The machine reading device having the above configuration is a high value-added product using the machine identification paper, for example, banknotes, securities, secret documents,
It can be applied to machine readers for various products such as coupons and admission tickets.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a machine reader.

FIG. 2 is a cross-sectional view of a printed material using a machine identification paper in which titanium dioxide is mixed at a required position.

FIG. 3 is a view showing a spectral reflectance curve of a machine identification paper in which titanium dioxide is mixed at a required position.

FIG. 4 is a waveform diagram of a spectral reflection amount near 365 nm of a printed matter using a machine identification paper in which titanium dioxide is mixed at a required position.

FIG. 5 is a waveform diagram obtained by binarizing a waveform of a spectral reflection amount near 365 nm at a predetermined reference level of a printed matter using a machine identification paper in which titanium dioxide is mixed at a required position.

FIG. 6 is a diagram showing a determination method.

FIG. 7 is a waveform diagram of the spectral reflection amount near 365 nm of the imitation product and a waveform diagram of the spectral reflection amount in the visible light region.

FIG. 8 is a waveform diagram of a spectral reflection amount near 365 nm of the imitation product and a waveform diagram obtained by binarizing the waveform of the spectral reflection amount in the visible light region at a predetermined reference level.

FIG. 9 is a waveform diagram of a spectral reflection amount in a visible light region of a printed matter using a machine identification sheet in which titanium dioxide is mixed at a required position.

FIG. 10 is a waveform diagram obtained by binarizing a waveform of a spectral reflection amount in a visible light region of a printed matter using a machine identification sheet in which titanium dioxide is mixed at a predetermined position at a predetermined reference level.

FIG. 11 is a waveform chart obtained by binarizing a waveform of a spectral reflection amount near 365 nm at a predetermined reference level of a printed matter using a machine identification paper in which titanium dioxide is mixed at a required position.

[12] Titanium dioxide, a plan view of a printed material using a machine identification paper of varying granted number and grant intervals calcium carbonate and A Le mini <br/> um compounds.

[13] Titanium dioxide, a waveform diagram of a spectral reflectance of near 365nm prints using grant number and machine identification sheet with varied applied spacing calcium carbonate and A Le mini <br/> um compounds.

[14] Titanium dioxide, a grant number and spectral reflection of the waveform in the vicinity of 365nm of the printed matter using a machine identification sheet with varied applied spacing calcium carbonate and A Le mini <br/> um compound at a predetermined reference level The binarized waveform diagram.

[15] Titanium dioxide, a grant number and spectral reflection of the waveform in the vicinity of 365nm of the printed matter using a machine identification sheet with varied applied spacing calcium carbonate and A Le mini <br/> um compound at a predetermined reference level The binarized waveform diagram.

[16] Titanium dioxide, a waveform diagram of a spectral reflectance of near 950nm prints with mechanical identification paper of varying granted number and grant intervals calcium carbonate and A Le mini <br/> um compounds.

[17] Titanium dioxide, a spectral reflection of the waveform in the vicinity of 950nm of the printed matter using a machine identification paper of varying granted number and grant intervals calcium carbonate and A Le mini <br/> um compound at a predetermined reference level The binarized waveform diagram.

[Explanation of symbols]

1: Printed matter printed on machine identification paper mixed with titanium dioxide in a belt shape. 2: Transport unit. 3: Visible light lamp. 4: Visible light sensor. 5: UV lamp. 6: UV sensor. 7: Near infrared lamp. 8: Near infrared sensor. 9: discriminating unit. 10: Paper portion made of complete stock. 11 and 12: Parts mixed with titanium dioxide. 13: Printing surface. 14: Spectral reflectance curve of a paper portion composed of complete stock. 15, 16: Spectral reflectance curve of the portion where titanium dioxide was mixed. 17: Waveform indicating the spectral reflection amount near 365 nm of the paper portion made of complete stock. 18, 19: 365 nm of the portion where titanium dioxide was mixed
A waveform showing the amount of spectral reflection in the vicinity. 20: Portion coated with calcium carbonate. 21:混抄portion of A Le Miniumu compound. 22: printed material titanium dioxide and A Le Miniumu compound混抄the strip was printed in machine-identifiable paper overcoated with a calcium carbonate. 23: Waveform indicating the amount of spectral reflection around 365 nm of the portion overcoated with calcium carbonate. 24: 950 nm of the written混抄the A Le Miniumu compound
A waveform showing the amount of spectral reflection in the vicinity. 25: Waveform indicating the amount of spectral reflection around 950 nm of a paper portion made of complete stock. A, B: binarized waveforms a, b, c, d, e, f, g, h, i, j, k, x,
y, z, v, w, r, m, n, p, s, q, t, u,
u ': predetermined reference level α: shielding plate

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields investigated (Int. Cl. ⁷ , DB name) G01J 1/00-1/60 G07D ⁷ /00-7/20 D21H 11/00-27/42

Claims (3)

(57) [Claims] 1. In the visible light region, the spectral reflectance is substantially the same as the spectral reflectance of the substrate surface, but in a predetermined wavelength region in the ultraviolet or near-infrared region, it has a spectral reflectance different from the spectral reflectance of the substrate surface. The substance is added to the base material as information by mixing or overcoating, and the added information is not visible even when actually observed with the naked eye.
However, the provided information is read from the printing surface with a visible light, ultraviolet, and near-infrared light-emitting lamp, and a visible light, ultraviolet, and near-infrared light-receiving sensor, and the visible light waveform and ultraviolet light are read. A machine reading method characterized in that a waveform and a waveform in the near infrared region are simultaneously identified and determined. 2. In the visible light region, the spectral reflectance is substantially the same as the spectral reflectance of the substrate surface, but in a predetermined wavelength region in the ultraviolet or near-infrared region, it has a spectral reflectance different from the spectral reflectance of the substrate surface. The substance is added to the base material as information by mixing or overcoating, and the added information is not visible even when actually observed with the naked eye.
However, in identifying and judging the added information by a machine reading device including a transport unit, a detection unit, and a determination unit, the detection unit includes a light-emitting lamp in a visible light range, an ultraviolet range, and a near-infrared range, and a visible light range. And light receiving sensors in the ultraviolet and near infrared regions, read from the printing surface by the detection unit,
A machine reader for simultaneously distinguishing and determining a visible light waveform, an ultraviolet light waveform, and a near infrared light waveform. 3. A material having a spectral reflectance substantially equal to the spectral reflectance of the paper in a visible light region, but having a spectral reflectance different from the spectral reflectance of the paper in a predetermined wavelength region of an ultraviolet region or a near-infrared region. On the other hand, the machine identification paper provided as information by mixing or overcoating is used as printing paper, and the provided information is actually
Although not visually recognizable by observation with eyes, the information given to the printing paper is identified and determined by a machine reading device including a transport unit, a detection unit, and a determination unit. And a light-emitting lamp in the near-infrared region, and a light-receiving sensor in the visible light region, the ultraviolet region, and the near-infrared region, read from the printing surface by the detection unit, the waveform in the visible light region, the waveform in the ultraviolet region, and the near-infrared region. A machine reading device for simultaneously identifying and judging waveforms of the same.