The method of marking objects

 

(57) Abstract:

The invention is intended for the identification of works of art, objects of religious cult and industrial production. The method consists in the application code from a combination of numbers and letters or other characters are invisible in normal conditions cryptography using dye and entering it into the computer database. When this code is applied in the mode of ultraviolet radiation with subsequent keeping the account code in this radiation for a time sufficient for penetration of the dye into the object marking to a depth at least equal to the thickness of the surface layer. Moreover, the application code and extract its recording is carried out in UV rays with a wavelength of 240 to 400 nm, and a code entry withstand this radiation within 1-30 minutes technical result consists in the reliability of marking of objects and the ease of application and low cost equipment. 2 C.p. f-crystals, 1 table.

The invention relates to the field of problems related to the identification of works of art, objects of religious cult and industrial production in order to prevent theft of cultural property, the known method of marking objects in particular securities, documents, money, works of art and objects of industrial production with the purpose of identifying them [1]. The essence of this method lies in the fact that the object is irradiated with coherent pulsed radiation tunable laser and record the spectra reflected from the object radiation. Upon irradiation of the object part of the radiation is absorbed by the material, and some is reflected from the object. Reflected from the object, the radiation falls on a semi-transparent mirror and is directed to the spectral instrument with the recorder. The spectral device records the absorption spectra of this object. The object under examination is irradiated different wavelengths.

Tunable laser tuned to the wavelength equal to the resonance, and generates pulses of coherent radiation, which is directed to an electro-optical modulator and then focused on the surface of the marked object. Modulator deflects the laser beam on the program on the computer, and thus forming the labels of the specified type.

To read the signs marking, printed on the object, the latter is irradiated by the radiation source with a wavelength equal to the wavelength islicensed through opto-electronic unit, the associated direct and inverse relationships with your computer.

When using this method for marking an object is not happening violations of its physico-chemical structures and any mechanical damage. The resulting labels are not destroyed when the physico-chemical effects on the surface of the object.

However, to label objects this way the need for complex expensive equipment that can be used only in stationary conditions.

In this regard, it is almost impossible to apply for mass marking of objects such as works of art, such as paintings and religious objects, particularly icons, especially in remote areas of the country.

There is also known a method of marking objects, in particular vehicles, to prevent theft of the vehicle, the difficulties of criminal sale of stolen vehicles or parts thereof and difficulties of using fake documents [2].

The essence of this method consists in the following.

When marking the object, in particular of motor vehicles, put on its part of the coded combination of letters and numbers and enter it in to the od high pressure, and for application code to other parts of the object, such as metal, plastic, use a leave-in cryptographic dye, not visible in normal conditions. The composition of the dye kept secret in order to avoid attempts to pick up the solvent with which it was possible to remove the code. To find this code can only ultraviolet rays.

The above-described method of marking an object, in particular of motor vehicles, is the closest analogous solution in its essence to the proposed method.

The disadvantages of this method is the following.

To use this method for marking objects, such as works of art, particularly paintings, rare manuscripts, religious items, etc. is almost impossible. Application code special solid powder under high pressure using, for example, sandblasting gun is only possible on glass objects.

When applying the code in the daylight or electric light, invisible in normal conditions cryptography using indelible dye, available to the consumer, the latter is not enough penetrates deep into poverhnosti, which reduces the reliability of the identification object marking.

Object of the invention is to provide such a method that would provide reliable marking of objects, including works of art, religious items, rare manuscripts, etc., when their mass identification and at the same time was technologically simple, not requiring additional costs for special equipment when marking and detection.

This object is achieved due to the fact that in the proposed method of marking objects, which consists in applying the code of the combination of numbers and letters or other characters are invisible in normal conditions cryptography using dye and recording it in a computer data Bank, according to the invention, the code is applied in the mode of ultraviolet radiation with subsequent keeping the account code in this radiation for a time sufficient for penetration of the dye into the object marking to a depth at least equal to the thickness of the surface layer.

Moreover, the application code and extract its recording is carried out in the ultraviolet radiation with a wavelength equal to 240-400 nm. This account code vigarny markers, or markers, or indelible dyes of any composition of domestic or foreign production, which when applied to the object marking code remains invisible under normal lighting.

The application code is invisible in normal conditions cryptography using dye in the mode of ultraviolet radiation with subsequent keeping the account code in this radiation for 1-30 min promotes deeper penetration of the dye into the surface layer of the structure of object marking and thereby increases the stability of the dye in the physico-chemical effects on the surface of the marked object.

The exposure time writing code in ultraviolet radiation depends on the material of the object marking, as well as the depth of the surface layer.

The exposure time less than one minute does not provide performance improvement obtained when applying the code in a known manner, and the shutter speed more than 30 minutes is impractical, as it does not affect further improvement, which reached the optimal values for a given time interval, and only increases the cost of the marking process.

Optimal results on the stability of the dye poluchenii code UV radiation with wavelengths less than 240 nm even without the influence of solvent luminescence dye is very weak, that dramatically reduces the reliability of marking and identification.

The proposed method of marking objects, in particular works of art or objects of religious worship, is as follows.

Are marked on the object cause of alphanumeric or other characters code is not visible under normal conditions cryptography using dye-mode irradiation with ultraviolet radiation with a wavelength equal to 240-400 nm. After applying the code continue irradiation his account the same radiation within 1-30 minutes While the composition of the dye kept secret in order to avoid attempts to pick up the solvent with which it was possible to remove the code. Discover coded only when exposed to ultraviolet radiation.

Information encoded on the object and its owner is entered in the computer database, which is available at any time to determine the owner of the object, to make the exhibition to exhibition, to create files, directories, one directory of cultural values in the territory of the district, region, etc.

Experimental investigations were carried out of the proposed method of marking on objects of religious cult in one of C the AI, is put codes were identified with the help of ultraviolet radiation. Marking well preserved, clearly visible on all sites and remains invisible under normal lighting. On the ground markings can damage the texture of the objects are not detected.

In addition, in the laboratory studies have been conducted of the proposed method of labeling on different sites with subsequent impact on the code in different solvents. The results are shown in the table.

To compare with the marking of the object on the prototype is not possible, because the code by a known method were applied to metal, plastic and other parts of the car using the dye, the composition of which is kept secret. Therefore, the comparison was carried out with the marking of different objects using a dye of a certain composition, which was applied to objects in the daylight or electric light, and the proposed method, i.e., the code was applied in the mode of ultraviolet radiation with subsequent keeping the account code in this radiation.

The object identification was carried out on such factors as the safety of the surface layer and the readability of the code when exposed to UV radiation after physico-chemical attack mode, exposure to UV radiation followed by exposure writing code in this radiation has improved the stability of the dye due to its deeper penetration into the object structure.

Thus, when exposed to the labeled surface layer objects, such as metal, plastic strong solvents (solvent 646, acetone) even when the disturbance of the surface layer to a depth exceeding the thickness of the surface layer, traces of code that can identify the object (see tab. gr. 5 and 6). While when marking the object under normal lighting after exposure to these solvents, traces of the code is available and identify the object almost impossible.

When handling solvents marking printed on items such as book paper, canvas, wood, surface layer also is disturbed, however, UV radiation code well, you can distinguish (gr. 5, 6).

After exposure to these objects with a mark in the ordinary illumination solvents such as solvent 646 and acetone, are only visible traces of code, for which identification is much harder and more costly.

Thus, the results showed that the proposed method provides reliable marking of objects, including works of art, religious artifacts, rare books the manual technologically simple, does not require additional costs for special expensive equipment when marking and detection. In addition, the proposed method is designed to prevent theft of cultural property, makes it difficult for the resale and export abroad of stolen works of art.

1. The method of marking objects, which consists in applying a code of combination of numbers and letters or other characters are invisible in normal conditions cryptography using dye and entering it into the computer database, wherein the code is applied in the mode of ultraviolet radiation with subsequent keeping the account code in this radiation for a time sufficient for penetration of the dye into the object marking to a depth at least equal to the thickness of the surface layer.

2. The method according to p. 1, characterized in that the application code and an excerpt of his writing carried out by ultraviolet radiation with a wavelength equal to 240 - 400 nm.

3. The method according to p. 1, characterized in that withstand the account code in ultraviolet radiation for 1 to 30 minutes

 

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