TW201540563A - Print with identification code - Google Patents

Abstract

To provide a print with an identification code readable easily by a reader, capable of preventing copy by a copying machine, not easy to be copied by visual observation, not imparting a dark impression and producible easily. A print has a substrate, an identification code including a margin part and a code part printed on the substrate, and a hiding part printed on a part of the identification code and the substrate. In the print, the code part of the identification code is infrared light absorbent and visible light absorbent, and the hiding part is infrared permeable and visible light absorbent.

Description

Printed matter with identification code

The present invention relates to a printed matter with an identification code for preventing copying of an identification code by a copying machine and for recognizing a reading accuracy of a code reader.

As a printed matter with an identification code, a printed matter of a two-dimensional code such as a QR code (registered trademark) is widely known. The printed matter of the QR code is formed on a paper or the like by a method of printing a toner by a toner printing method, a thermal printing method, or the like. On the substrate (for example, refer to Patent Document 1 below).

However, the QR code formed in such a manner can be easily reproduced by copying by a copying machine. For this reason, there is a problem that a copying machine can easily copy the same thing as a printed matter with a regular QR code. . Therefore, such a QR code is an area that is difficult to be used in a ticket of a train, etc., which is not allowed to be copied.

As a countermeasure against this, in Patent Document 2, a concealed solid layer in which a black color of a two-dimensional code is concealed is provided on a thermal paper on which a two-dimensional code is printed, and There is a protective layer on top. When the printed matter including the two-dimensional code is copied by the copying machine, the two-dimensional code is not copied, but the concealed solid layer is copied, and the black is printed. Further, since the concealed coating layer is formed by a black ink that is transparent to infrared light, it can be transmitted through the infrared rays used in the reader, and even if there is a concealed solid layer reader, it can be read in two dimensions. code.

Further, in Patent Document 3, a concealed coating layer in which a black color of a two-dimensional code is concealed is provided on a thermosensitive paper on which a two-dimensional code is formed, and a first dummy layer and a transparent second camouflage layer are provided on the upper surface. The camouflage layer is formed. Since the printed matter cannot be reproduced by the copying machine, and the concealed coating layer and the first camouflage layer are formed by the black ink of the color mixing system, they are transmitted through the infrared rays used in the reader.

[Previous Technical Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2001-307154

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2013-1077

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2013-1078

However, in the printed matter described in Patent Document 2, at least two layers of the cover layer and the protective layer are formed on the heat-sensitive layer for printing the two-dimensional code, and thermal printing is applied to the heat-sensitive layer. Dimension At the same time, there is a problem that it is difficult to transmit heat in the sensible layer. Further, in the printed matter described in Patent Document 3, at least two layers of the cover layer and the camouflage layer are formed on the heat-sensitive layer, and heat is not easily transmitted in the heat-sensitive layer. In such a case, for example, in the case of performing a thermal printing two-dimensional code in the case of an automatic ticket vending machine, it is unfortunate that the printing of the two-dimensional code is insufficient, and it is understood that it is not suitable as a two-dimensional code.

Further, the printed matter described in Patent Document 2 is not readable by a copying machine, but a two-dimensional code is thermally printed on the solid layer, and only a part of the gloss printed with the two-dimensional code changes. The protective layer also reduces the change in gloss, but even so, it is a pity that the 2D code can be read to some extent by visual inspection, which is a problem that can be copied by handwriting.

In the printed matter described in Patent Document 3, the camouflage layer is formed on the black concealed coating layer, and the visibility is lowered. In one mode, the first camouflage layer and the second camouflage are formed to overlap each other. The layer will become 3 layers on the sensible layer, and heat is more difficult to transfer. In other cases, in order to form the second dummy layer by printing the gap of the first dummy layer, there is a problem that the manufacturing portion is easy.

Furthermore, in the case where these printed materials, including the two-dimensional code, are completely painted black, there is an impression that the printed matter gives a gloomy color.

SUMMARY OF THE INVENTION An object of the present invention is to provide an image reader which can be easily read by an identification code reader, and which can be prevented from being copied by a copying machine, which is not easy to visually copy, which does not give a gloomy impression, and is easy to manufacture. Printed with identification code.

The inventors of the present invention have found that the above problems can be solved by the following means. That is, the present invention is as follows:

[1] A printed matter comprising: a substrate, an identification code including a blank portion and a code portion printed on the substrate, and a portion printed on the identification code and a concealed portion on the substrate; The code portion of the identification code is infrared absorbing and visible light absorbing; and the concealing portion has infrared ray permeability and visible light absorbing property.

[2] The printed matter of claim 1, wherein the code portion of the identification code has an average reflectance of 20% or less for light having a wavelength of 880 nm to 930 nm when only a white substrate is disposed for measurement.

[3] The printed matter of claim 1 or 2, wherein the concealing portion has an average reflectance of 65% or more for light having a wavelength of 880 nm to 930 nm when only a white substrate is disposed for measurement.

[4] The printed matter according to any one of claims 1 to 3, wherein the concealing portion and the code portion of the identification code are respectively provided with a white substrate for measurement, and a wavelength of 460 nm to 650 nm. The average reflectance of light is 30% or less.

[5] The printed matter according to any one of claims 1 to 4, wherein, when only a white substrate is disposed under the measurement, the average reflectance of the concealed portion of light having a wavelength of 460 nm to 650 nm is as described above. The difference in the average reflectance of the code portion of the identification code is 10% or less.

[6] The printed matter of any one of [1] to [5], wherein The substrate is a thermal paper, and the aforementioned identification code is thermally sensitive printed on the thermal paper.

[7] The printed matter according to any one of [1] to [6] wherein the difference between the whitening rate of the identification code and the non-existence ratio of the concealing portion is 0.4 or less.

[8] The printed matter according to any one of [1] to [7] wherein the concealing portion has an irregular linear shape.

[9] The printed matter of claim [8], wherein the identification code is a two-dimensional code; a ratio of a line of the concealing portion or a diameter of a point to a side length of one of the two-dimensional code is 0.5. Above, below 2.0.

[10] The printed matter according to any one of [1] to [9], further comprising a protective layer on the surface thereof.

The printed matter with the identification code of the present invention can be easily read by the identification code reader, and can be prevented from being copied by the copying machine, which is not easy to copy by visual observation, does not give a gloomy impression, and is easy to manufacture. Such a printed matter with an identification code can be used for a ticket or the like in which a printed matter with an identification code cannot be used in the past, and is extremely useful. Further, it is more useful to use a thermal paper in which the identification code printed matter of the present invention is ideal for the thermal printing of the identification code.

1‧‧‧Substrate

2‧‧‧ID

3‧‧‧Hidden Department

4‧‧‧Concealed solid layer

5‧‧‧1st camouflage layer

6‧‧‧2nd camouflage layer

10‧‧‧Printed matter

Fig. 1 is a schematic view showing a printed matter of the present invention (visible light) and a case where it is read by a reader (infrared light).

Fig. 2a is a schematic view showing a layer structure of one embodiment of the printed matter of the present invention.

[Fig. 2b] is a schematic view showing a layer structure of a printed matter of the prior art (Patent Document 3).

Fig. 3 is a photograph of the printed matter of Example 1.

Fig. 4 is a photograph of the printed matter of Examples 3 and 4.

<printed matter>

The printed matter of the present invention has a substrate, an identification code including a blank portion and a code portion printed on the substrate, and a code portion and a concealing portion of a part of the concealment portion identification code on the identification code, all of which can absorb visible light. The visual color is the same color, and the presence of the concealed portion can prevent the copying of the identification code by the copying machine and visual copying. On the other hand, the identification code reader mainly uses infrared rays in the vicinity of 850 nm, and the code portion of the identification code absorbs light, and on the other hand, the concealed portion transmits light, and the code can be read even if the concealed portion identification code reader is present.

Fig. 1 is a schematic view showing a printed matter 10 seen in a case where it is visually observed (visible light) and (b) when it is read by a reader (infrared light), and in the case of visual observation, the concealing portion 3 conceals an identification code. (QR code) 2, but when the reader reads, the concealing portion 3 transmits infrared rays instead of Covert identification code 2.

Fig. 2(a) shows a layer structure of one embodiment of the printed matter of the present invention. Here, the printed matter 10 of the present invention is printed with the identification code 2 on the substrate 1 and the concealed portion 3 is printed thereon. . 2(b) shows the layer structure of the printed matter 10 of Patent Document 3, in which the identification code 2 is printed on the substrate 1 by thermal sensing, and the concealed coating layer 4 is formed thereon. Further, a black first dummy layer 5 and a transparent second dummy layer 6 are formed thereon.

(substrate)

The substrate reflects the infrared light of the wavelength used by the identification code reader. When the measurement is performed using only light having a wavelength of 880 nm to 930 nm on the substrate, the average reflectance is preferably 60% or more, 70% or more, or 80% or more.

The substrate may be white or may have other colors. When the light having a wavelength of 460 nm to 650 nm is used for measurement, the average reflectance is 50% or more, 60% or more, 70% or more, or 80% or more. It is better. In the present specification, the average reflectance between the wavelengths of 880 nm and 930 nm is a print contrast meter MR-12 manufactured by SAKATA INX ENG. CO., LTD. using an optical density meter, using a D filter. The measured value. Further, the average reflectance between the wavelengths of 460 nm and 650 nm is a value measured by using the A filter in the same model.

As such a substrate, the identification code can be printed without any particular limitation, and for example, fine paper, recycled paper, thermal paper, or the like can be used. A paper such as a coated paper or a label for thermal transfer, or a resin film such as a polyester film or a polypropylene film. However, in the case of using a thermal paper, it is preferable to print the identification code at a ticket vending machine or the like after forming the concealing portion. The heat-sensitive paper is not particularly limited as long as it has a characteristic of absorbing infrared rays by the information of the thermal printing. For example, the thermal layer of the substrate 1 as the thermal-sensitive printing identification code 2 can be used for infrared coloring. The leuco dye (electron donor) and the acidic substance (electron acceptor) are dispersed as solid particles into the resin binder. Then, when the substrate 1 of the thermosensitive layer is formed on at least one side of the paper by heating with a thermal head, the amount of the leuco dye and the acidic component react with each other to generate an infrared color, and the film has a characteristic of absorbing light of a specific wavelength range.

(Identifier)

The identification code includes a white space portion and a code portion; the code portion is infrared light of a wavelength used by a reader that absorbs the identification code, and is slightly reflected. Specifically, in the case where the code portion of the identification code is measured by arranging only a white substrate, the average reflectance between 880 nm and 930 nm is 20% or less, 15% or less, 10% or less, or 8 % below. Here, the white substrate has an average reflectance of 50% or more, 60% or more, 70% or more, or 80% or more in the wavelength range of 460 nm to 650 nm, and an average reflectance at a wavelength of 880 nm to 930 nm. It is a white substrate of 50% or more, 60% or more, 70% or more, or 80% or more.

The PCS value of the code portion of the identification code between the wavelengths of 880 nm and 930 nm is preferably 0.75 or more, 0.80 or more, 0.85 or more, or It is 0.90 or more. Here, in the present specification, the PCS value between the wavelengths of 880 nm and 930 nm is a comparison of the measurement targets placed on the above-mentioned white substrate by SAKATA INX ENG.CO., LTD. The MRS value measured by the D filter was measured by MR-12. Further, the measurement is carried out while the thickness of the substrate does not affect the measured value, for example, the standard is determined by the full thickness paper backing method of JIS-X9004.

Further, the code portion of the identification code absorbs visible light, preferably in the form of black. Specifically, when the code portion of the identification code is disposed only under the white substrate for measurement, the average reflectance of light having a wavelength of 460 nm to 650 nm is 30% or less, 20% or less, 15% or less, and 10%. Below, or below 8%.

The PCS value of the code portion of the identification code between the wavelengths of 460 nm and 650 nm is preferably 0.75 or more, 0.80 or more, 0.85 or more, or 0.90 or more. Here, in the present specification, the PCS value between the wavelengths of 460 nm and 650 nm is a comparison of the measurement targets placed on the above-mentioned white substrate by SAKATA INX ENG.CO., LTD. For the MR-12, the PCS value measured using the A filter was used.

The printer for printing the code portion of the identification code can be, for example, an ink jet printer, a laser printer, a thermal printer, a thermal transfer printer, or the like, and a printer of various printing methods. However, in the case of using a thermal printer, it is preferable to print the identification code at a ticket vending machine or the like after forming the concealing portion.

As the identification code, a one-dimensional code and a two-dimensional code are exemplified. Further One step is a one-dimensional code. Specific examples include barcodes of CODE39, CODE128, JAN, ITF, etc.; as a two-dimensional code, specific examples include QR code, PDF417, Data Matrix, CP code, MaxiCode, and the like. Further, the identification code that can be applied to the present invention includes a blank portion and a code portion, and when the identification code is formed on the substrate by printing or printing, only the code portion may be formed. That is, in this case, the substrate itself becomes a white portion.

(hidden part)

The concealing portion is, for example, an infrared ray of a wavelength used by a reader of the identification code by printing a mixed color black ink. The mixed color black ink is usually prepared by mixing a dye of three colors of cyan, magenta, and yellow or a pigment. These dyes or pigments of various colors do not absorb infrared rays in the wavelength range used for the identification code reader, and do not absorb infrared rays even when mixed, and are black in the visible light range. Specifically, the concealing portion is a measurement in which the average reflectance between the wavelengths of 880 nm and 930 nm is 65% or more, 70% or more, 80% or more, or 85% or more in the case where only the white substrate is placed under the measurement.

The PCS value of the concealed portion between the wavelengths of 880 nm and 930 nm is preferably 0.20 or less, 0.15 or less, 0.10 or less, or 0.05 or less.

Each concealed part is black as the best. Specifically, in the case of the printed matter of the present invention in the case where the identification code is not present on the concealed portion below the light using the wavelength of 460 nm to 650 nm, the average inverse The incidence is 30% or less, 20% or less, 15% or less, 10% or less, or 8% or less.

The PCS value of the concealed portion between the wavelengths of 460 nm and 650 nm is preferably 0.75 or more, 0.80 or more, 0.85 or more, or 0.90 or more.

The difference between the black color of the identification code and the blackness of the concealed portion formed by the color mixing ink is large, and it is easy to recognize by visual observation, so that the smaller one is preferable. Specifically, the difference between the average reflectance of light having a wavelength of 460 nm to 650 nm between the concealed portion and the code portion of the identification code on which the concealed portion does not exist is 10% or less, 8% or less, or 5% or less. 3% or less, or 1% or less is preferred. Further, the difference between the PCS value of the code portion of the identification code between 460 nm and 650 nm and the PCS value of the concealing portion is preferably 0.12 or less, 0.10 or less, 0.08 or less, 0.05 or less, 0.03 or less, or 0.02 or less. By.

In order to obtain such a concealed portion, after the concealing portion is printed at a time, the printing can be repeated twice or three times or the concentration of the toner of the ink can be increased.

For the ink for printing the concealed portion, a matting agent for lowering the gloss after printing is preferred. In terms of the concealed portion printed by the ink containing the matting agent, the change in gloss is small before and after the thermal reading of the identification code, and the visibility of the visual identification code can be lowered.

The concealed portion is present on the identification code and a portion of the substrate. In the case where the substrate is a thermal paper, in order to conceal the entire identification code and to form a solid layer, it is difficult to transfer the layer heat in the lower layer during the thermal printing. and Further, even after the heat transfer, there is unevenness on the surface of the portion where the heat is transmitted (that is, the shape portion of the identification code) and the gloss changes, and it is unfortunate that the identification code can be recognized by visual observation.

The ratio of the area of the blank portion of the identification code to the area of the entire identification code (the area of the blank portion of the identification code/the area of the identification code: the blanking rate of the identification code) and the concealment portion do not exist on the identification code. The difference between the area of the entire identification code (the area of the portion where the concealment portion does not exist on the identification code/the area of the identification code: the non-existence rate of the concealed portion) is preferably the same. Specifically, the difference (the blanking rate of the identification code - the non-existence rate of the concealing portion) is preferably 0.4 or less, 0.3 or less, 0.2 or less, or 0.1 or less.

The concealing portion is not particularly limited if it is a ruled or irregular line or a polygon, a circle, or an ellipse, a character, a pattern, or the like which is drawn by a dot to make it difficult to visually read the identification code.

When the side length of one square of the code portion of the two-dimensional code is the same as the diameter of the line constituting the concealed portion or the minimum diameter of the dot, it is preferable because it is difficult to read by visual observation. Specifically, the ratio of the diameter of the line constituting the concealing portion or the minimum diameter of the point to the side length of one square of the code portion of the two-dimensional code (the length of the side of the concealed portion or the length of the two-dimensional code) is 0.5 or more. 0.7 or more, or 0.9 or more is preferable, and it is preferably 2.0 or less, 1.5 or less, or 1.2 or less.

(other layers)

Other layers may be included between the substrate and the concealing portion, but preferably, the concealing portion is attached to the substrate. Moreover, even in the case where other layers are included, it is preferred It is a coating layer formed by using a mixed color black ink. Further, on the surface of the printing portion, it is preferable to form a protective layer for protecting the printed matter by wiping or the like and/or for making the printing mark when the thermal printing is difficult to be conspicuous.

[Examples] <sample preparation>

As a substrate, a heat-sensitive paper (manufactured by Oji Imaging Media Co., Ltd.) which emits color and absorbs infrared light and has a black color is used (the average reflectance between 460 nm and 650 nm is 50% or more, and is 880 nm to 930 nm). A white substrate having an average reflectance between wavelengths of 50% or more. On the substrate, a concealing portion was printed using an ink of the composition of Table 1 below using a flexographic test press (flexible proof 100 UV, manufactured by RK PrintCoat Instruments Ltd., UK).

In Examples 1 to 9, the concealed portions of different patterns were printed. The details of the patterns of the respective examples are shown in Table 2. Further, photographs of the samples of Examples 1, 3, and 4 are shown in Figs. 3 and 4. In Comparative Examples 1 and 2, a concealed coating layer was formed instead of the concealing portion. However, in Comparative Example 2, the ink composition in Table 1 was further used as a matting agent, and 4 parts by weight of crosslinked polymethyl methacrylate was added. Ink of cross-linked polymethyl methacrylate microparticles (techpolymer MBX-5, manufactured by Sekisui Chemicals Co., Ltd.). These samples were painted twice to form a concealed portion.

For these, a thermal printer (PX430, manufactured by Phoenix Ltd.) was used to print the QR code and print the QR code in thermal reading (data: 56789, version 1, revision level: standard M, 6 points/division) , 300dpi) as the identification code.

<Evaluation method>

The average reflectance and PCS value of the code portion of the QR code where there is no concealed portion and the concealed portion of the code portion without the QR code on the printed matter obtained as described above are measured by optical densitometry (MR-12, SAKATA INX) ENG.CO., LTD) was measured using an A filter (wavelength range 460 to 650 nm) and a D filter (wavelength range 880 to 930 nm). Here, regarding the PCS value, the standard is specified in JIS-X9004's full thickness paper backing method. Further, regarding the average reflectance and the PCS value measured by the A filter, the measured value of the code portion of the QR code where the above-described concealing portion is not present and the measurement of the concealed portion of the code portion having no QR code below are obtained. Value difference. When these differences are small, the difference in brightness between the code portion and the concealed portion is small, and the visibility of the visual recognition becomes high.

For the measurement of the area of the white space, the Measure of the MYKA Institute's Area Measure (Ver. 2.00, date of December 14, 2001, file name AM20000.exe) was used. First, a two-dimensional code is printed on a substrate having no concealed portion, and the area of the white portion of the QR code is measured. Under the same area as the QR code, the concealed portion of each sample before the QR code is printed is measured. There is a partial area. Thereby, the blank ratio of the QR code and the blanking rate of the non-existence rate of the concealed portion are calculated, and the difference is obtained.

The film gauge was used to measure the diameter of the line of the concealed portion or the square of the lattice region and the side length of one square of the two-dimensional code, and then the ratio (diameter/cell length) was obtained.

The visibility of the 2D code under visual observation is used as concealment and evaluated. In the case where the two-dimensional code is extremely unsightly, the concealing property is taken as ○, and when the two-dimensional code is hard to see, it is Δ, and when it is clearly seen, it is evaluated as ×.

Whether or not the copying machine can be used for copying is evaluated as copy prevention, and all the samples cannot be read from the copy to the two-dimensional code.

<evaluation result>

The evaluation results are shown in Table 2 below.

Further, the two-dimensional code of all the samples can be read by a reader (BHT-845QW, manufactured by DENSO WAVE INCORPORATED).

[Industrial Availability]

The printed matter with the identification code of the present invention can be easily read by the identification code reader, can also be prevented from being copied by the copying machine, is not easy to copy by visual inspection, does not give a gloomy impression, and is easy to manufacture. For reasons, it is useful for tickets and the like. Further, in the case where the ticket is read by the printed matter with the identification code of the present invention, it is extremely useful because it does not require a large-sized contact automatic ticket gate device which is currently used.

1‧‧‧Substrate

2‧‧‧ID

3‧‧‧Hidden Department

10‧‧‧Printed matter

Claims (10)

A printed matter comprising: a substrate, an identification code including a blank portion and a code portion printed on the substrate, and a portion printed on the identification code and a concealed portion on the substrate; wherein: The code portion of the identification code has infrared absorbing properties and visible light absorbing properties. Further, the concealing portion has infrared ray permeability and visible light absorbing property. The printed matter of claim 1, wherein the code portion of the identification code has an average reflectance of 20% or less for light having a wavelength of 880 nm to 930 nm when only a white substrate is disposed for measurement. The printed matter according to claim 1 or 2, wherein the concealing portion has an average reflectance of 65% or more for light having a wavelength of 880 nm to 930 nm when only a white substrate is disposed for measurement. The printed matter according to any one of claims 1 to 3, wherein the concealing portion and the code portion of the identification code are respectively averaging light of a wavelength of 460 nm to 650 nm when a white substrate is disposed under the measurement. The reflectance is 30% or less. The printed matter according to any one of claims 1 to 4, wherein, in the case where only a white substrate is disposed under the measurement, the average reflectance of the concealed portion of the light having a wavelength of 460 nm to 650 nm and the identification code are The difference in average reflectance of the code portion is 10% or less. The printed matter according to any one of claims 1 to 5, wherein the substrate is a thermal paper, and the identification code is sensibly printed on the thermal paper. The printed matter according to any one of claims 1 to 6, wherein a difference between a blank ratio of the identification code and a non-existence ratio of the concealing portion is 0.4 or less. The printed matter according to any one of claims 1 to 7, wherein the concealing portion is an irregular linear shape. The printed matter of claim 8, wherein the identification code is a two-dimensional code; and a ratio of a line of the concealing portion or a diameter of a dot to a side length of one square of the two-dimensional code is 0.5 or more and 2.0 or less. range. The printed matter of any one of claims 1 to 9, wherein the protective layer is further provided thereon.