Method for creating a digital tag for marking articles

Abstract

In a method for creating a digital tag for the security marking of articles, a sequence of dots is applied to an article using a luminescent dye, the resulting tag is exposed to ultraviolet light having a wavelength of 250-400 nm, the tag is read using a digital photographic camera, and the obtained image is processed. For each dot of the tag, a luminescence spectrum is obtained consisting of four bands, each of which is correlated with a whole number from 0 to 255 according to the intensity thereof. Half of the dots form a QR code in a horizontal direction, where the dots are correlated with whole numbers and a green component of an RGB code is produced, and the other half of the dots form the QR code in a vertical direction, with a red component of the RGB code being produced. Upon formation of the coloured QR code, each of the dots thereof is situated at the intersection of two components of the RGB code and contains a colour code, where each component contains from 0 to 255 dots: R is from 0 to 255, G is from 0 to 255, and B is equal to 0. The technical result of the invention consists in providing more reliable protection of a product against counterfeit.

Description

[0001] Method for creating a digital label for marking products

[0002] Field of technology

[0003] The invention relates to the chemical industry and can be used to protect products from counterfeiting.

[0004] Each compound with lanthanide ions has its own luminescence spectrum - a set of several peaks with a certain radiation wavelength and intensity. These parameters are determined by the chemical composition. In order to fully reproduce the spectrum, you need to have a substance of exactly the same composition. This is the degree of protection of the proposed dyes - without specific compounds, it is impossible to apply a QR code indicating the authenticity of the product.

[0005] Using these dyes, it is possible to apply marks to valuable documents and goods in the form of a sequence of dots.

[0006] Ethanol in the solution helps the inscriptions dry quickly after writing, and glycerin increases viscosity. The ink can be used to fill a capillary pen rod or an inkjet cartridge.

[0007] The process of heating the solution is necessary for the chemical reaction to take place, and sealing is necessary because heating occurs to a temperature exceeding the boiling point of the solvents used.

[0008] The precipitate is filtered to separate the reaction product (precipitate) from the solvent and starting materials. The precipitate must also be washed to remove any remaining unreacted starting materials. RGB code is a combination of three hexadecimal numbers for color coding.

[0009] State of the art

[0010] The prior art discloses a method for marking and authenticity control when protecting an object from counterfeiting by applying a light-sensitive identification mark with the possibility of obtaining an optical effect through additional external influence (in particular, UV irradiation) when checking authenticity (patents RU2156491 C1, RU2662813C1).

[0011] A common disadvantage of these methods is the possibility of replacing the identification mark, since the dyes used to apply them are publicly available.

[0012] A method is known for marking and authenticity control when protecting an object from counterfeiting by applying a light-sensitive identification mark based on bacteriorhodopsin with subsequent obtaining of an optical effect by means of additional external influence (patent RU2411135C2).

[0013] The disadvantage of this method is the need to use the light-sensitive protein bacteriorhodopsin, which has limited resistance to elevated temperatures and sunlight. There is also no information on the durability of the labels during long-term storage of the protected objects.

[0014] Revealing the essence

[0015] The objective of the invention is to create a method for protecting products from counterfeiting.

[0016] The technical result of the invention consists in increasing the reliability of product protection against counterfeiting. The external environment is understood to be the action of acid solutions with a pH of 2 to 7, alkali solutions with a pH of 7 to 12 at 25°C, high temperature (450°C) in air.

[0017] When implementing the method for creating a digital mark for protective marking of products, a sequence of dots is applied to the product with a fluorescent dye, the resulting mark is irradiated with ultraviolet light with a wavelength of 250 - 400 nm, the mark is read using a digital camera, and the resulting image is processed. For each point of the mark, a luminescence spectrum consisting of four bands is obtained, each of which is associated with an integer from 0 to 255 based on intensity. A QR code is formed horizontally from half of the mark dots, while integers are associated with the dots and a green component of the RGB code is obtained, and a QR code is formed vertically from the other half of the dots, and a red component of the RGB code is obtained.

[0018] When forming a color QR code, each of its points is located at the intersection of two components of the RGB code and contains a color code, where each component contains from 0 to 255 points: R from 0 to 255, G from 0 to 255, B equals 0.

[0019] The mark consists of a combination of dots - in one row or in several rows, in a circle, in the form of a picture or inscription. Depending on the specified order, embedded in the algorithm for reading the mark, in which each point is matched with an RGB code vertically or horizontally.

[0020] The image is processed and the numbers are compared using a special scanner or portable computer system that has a label recognition algorithm built in. After receiving the spectrum from the color, the spectrum is now converted into a set of four numbers.

[0021] The uniqueness of the luminescence spectrum of the metal-organic coordination polymer (MOCP) ensures the practical impossibility of reproducing security marks without dyes of the specified composition [EuxTbi-x(HL)(H2O)3]. An additional level of QR code protection is created by changing the luminescence spectrum over time. Reading of security marks for subsequent digital processing may not be performed simultaneously, with irradiation with an ultraviolet lamp with a wavelength of 365 nm, but with a certain predetermined delay in the range from 0 to 1 ms. In this case, the formation of the reference QR code and its digital equivalent is performed with the same time delay.

[0022] Implementation of the invention

[0023] Example #1

[0024] A mixture of terbium nitrate hexahydrate and 5,5'-(pyridine-2,6-diylbis(oxy))diisophthalic acid is dissolved in 20-40 ml of a mixture of acetonitrile and water. The resulting solution is loaded into a glass ampoule, sealed and heated in a heating cabinet at 110-130 °C.

[0025] The resulting precipitate is filtered and washed with water. The isolated dye powder is dispersed by ultrasound in ethanol, then glycerin is added and mixed, and as a result a luminescent suspension is obtained.

[0026] Steps for using the created QR code:

[0027] The applied fluorescent mark is read with a digital camera when irradiated with ultraviolet light with a wavelength of 250 nm. When processing the resulting image, a luminescence spectrum consisting of four bands is obtained for each point of the mark, each of which is associated with an integer from 0 to 255 based on intensity. Thus, each point gives a set of four integers. According to a predetermined algorithm, half of the mark points form a QR code horizontally, while the integers associated with them are obtained using the green component of the RGB code, and the other half of the points form a QR code vertically, while the integers associated with them give the red component of the RGB code. When forming a color QR code, each of its points located at the intersection of the three components (R, G, B) obtained in step will have an RGB color code of the type R (0 ... 255) G (0 ... 255) B (0).

[0028] The resulting QR code allows visual control of the reading of security marks, as well as visual comparison of the read code with the reference code.

[0029] An accurate comparison of the read code with the reference code is performed using software that compares the digital RGB codes of each point of the QR code with the reference values ​​(the digital equivalent of the QR code).

[0030] Using this dye, it is possible to apply marks to valuable documents and goods in the form of a sequence of dots. To ensure the complexity of reproducing the security mark, the dots can be applied using two different dyes.

[0031] Example #2

[0032] A mixture of europium nitrate hexahydrate and 5,5'-(pyridine-2,6-diylbis(oxy))diisophthalic acid is dissolved in 20-40 ml of a mixture of acetonitrile and water. The resulting solution is loaded into a glass ampoule, sealed and heated in a heating cabinet at 110-130 °C.

[0033] The resulting precipitate is filtered and washed with water. The isolated dye powder is dispersed by ultrasound in ethanol, then glycerin is added and mixed, and as a result a luminescent suspension is obtained.

[0034] Steps for using the created QR code:

[0035] The applied luminescent mark is read by a digital camera when irradiated with ultraviolet light with a wavelength of 365 nm. When processing the resulting image, a luminescence spectrum is obtained for each point of the mark, consisting of four bands, each of which is matched with an integer from 0 to 255 based on intensity. Thus, each point gives a set of four integers. According to a predetermined algorithm, half of the points of the mark form a QR code horizontally, while the integers matched to them are obtained using the green component of the RGB code, and the other half of the points form a QR code vertically, while the integers matched to them give the red component of the RGB code.

[0036] When forming a color QR code, each of its points located at the intersection of the obtained red and green components will have an RGB color code of the form R(0...255)G(0...255)B(0).

[0037] The resulting QR code allows visual control of the reading of security marks, as well as visual comparison of the read code with the reference code.

[0038] An accurate comparison of the read code with the reference code is performed using software that compares the digital RGB codes of each point of the QR code with the reference values ​​(the digital equivalent of the QR code).

[0039] Using this dye, it is possible to apply marks to valuable documents and goods in the form of a sequence of dots. To ensure the complexity of reproducing the security mark, the dots can be applied using two different dyes. The resulting mark is also resistant to environmental impacts.

[0040] Example #3

[0041] A mixture of europium nitrate hexahydrate and terbium nitrate hexahydrate and 5,5'-(pyridine-2,6-diylbis(oxy))diisophthalic acid is dissolved in 20-40 ml of a mixture of acetonitrile and water. The resulting solution is loaded into a glass ampoule, sealed and heated in a heating cabinet at 110-130 °C.

[0042] The resulting precipitate is filtered and washed with water. The isolated dye powder is dispersed by ultrasound in ethanol, then glycerin is added and mixed, and as a result a luminescent suspension is obtained. Stages of using the created QR code:

[0043] The applied luminescent mark is read by a digital scanner when irradiated with ultraviolet light with a wavelength of 400 nm. When processing the resulting image, a luminescence spectrum is obtained for each point of the mark, consisting of four bands, each of which is matched with an integer from 0 to 255 based on intensity. Thus, each point gives a set of four integers. According to a predetermined algorithm, half of the mark points form a QR code horizontally, while the integers matched to them are obtained using the green component of the RGB code, and the other half of the points form a QR code vertically, while the integers matched to them give the red component of the RGB code.

[0044] When forming a color QR code, each of its points located at the intersection of the obtained red and green components will have an RGB color code of the form R(0...255)G(0...255)B(0).

[0045] The resulting QR code allows visual control of the reading of security marks, as well as visual comparison of the read code with the reference code.

[0046] An accurate comparison of the read code with the reference code is performed using software that compares the digital RGB codes of each point of the QR code with the reference values ​​(the digital equivalent of the QR code).

[0047] Using this dye, it is possible to apply marks to valuable documents and goods in the form of a sequence of dots. To ensure the complexity of reproducing the security mark, the dots can be applied using two different dyes.

Claims

Formula A method for creating digital protection for marking products, characterized in that a sequence of dots is applied to the product with a luminescent dye, the resulting mark is irradiated with ultraviolet light with a wavelength of 250 - 400 nm, the mark is read using a digital camera, the resulting image is processed, for each dot of the mark a luminescence spectrum consisting of four bands is obtained, each of which is associated with an integer from 0 to 255 based on intensity, a QR code is formed horizontally from half of the dots of the mark, while integers are associated with the dots and a green component of the RGB code is obtained, and a QR code is formed vertically from the other half of the dots, and a red component of the RGB code is obtained, wherein when forming a color QR code, each of its dots is at the intersection of two components of the RGB code, and contains a color code, where each component contains from 0 to 255 dots: R from 0 to 255, G from 0 to 255, B is equal to 0.