The method of determining the authenticity of a document on paper

 

(57) Abstract:

The invention relates to methods for protecting documents of great value, made in paper, from forgery or substitution. The technical result is the creation of a simple and accessible way of determining the authenticity (authenticity) of the document without requiring the texture used paper and having high reliability and objectivity of control. In method form the controlled area by drawing on a paper setting (paliperidonesee) substances to ensure uneven transparency remembering for later comparison in the control process. For an unambiguous positioning of the read-controlled land use elements of the positioning is made in the form of geometrical figures or signs, printed directly onto the medium or the transparent protective sticker. 8 C.p. f-crystals.

The invention relates to methods for protecting documents of great value, executed on paper, tampering or substitution.

One of the means of ensuring the protection of documents against forgery, is the use of paper characteristics which are typographically, are registered and are used mainly for government securities.

However, in practice often the necessary means to determine the authenticity of certain documents that run on ordinary paper. These funds should be available, relatively cheap and easy to use.

There are various ways of determining the authenticity of valuable documents, executed on paper.

In particular, there is a method, in accordance with which on paper put the mark of authenticity in the form of a luminescent substance with dyes and investigate changes in the emission spectrum under the same excitation spectrum used in the process of recording the reference spectrum, and in the control process (European patent 0053124, D 21 H 05/10, G 07 D 07/00, publ. 1982).

However, over time, changes can occur in the emission spectrum, which will lead to loss of accuracy control. In addition, by itself, spectral analysis is a very complicated procedure carried out, usually in the laboratory.

Known microwave method of control of authenticity of documents, in accordance with to the Suppl functions of protective elements. Then this document is manually moved relative to the microwave detector radiating the microwave into the specified document and receiving microwaves from the specified document, and analyze the received signal having a characteristic appearance for a given distribution of dipoles (European patent 1034516, G 07 D 07/00, publ. 2000).

There is a method of marking securities, which is applied to the marked material tag that represents a fragment of a natural or synthesized DNA with a known structure, and the preparation of primers for identification tag (RF patent 2084535, B 42 D 15/00, publ. 1997).

The disadvantage of the above methods is the complexity of making the marks of authenticity.

As a prototype of the chosen method of determining the authenticity of a document on paper, consisting in monitoring the transparency of the document and comparing the sequence of the received signals with a reference sequence, pre-recorded in coded form on a magnetic strip applied to the document using offset printing, and read from it in the control process (European patent 0286378, G 07 F 07/08, G 07 D 07/00, publ. 1998).

However, this method also required is srcnode paper.

The challenge is to create a simple and affordable method of determining the authenticity (authenticity) of the document, without the requirement to texture used paper and having high reliability and objectivity of the control.

The problem is solved in that in the method of determining the authenticity of a document on paper, which consists in controlling the transparency paper and memorizing the information received for the purposes of later comparison with similar information obtained in the audit process, according to the invention a controlled area is formed by coating on the paper substance, which soaks into the paper and polymerizable with providing uneven transparency, for example varnish, the optical image is read in passing optical radiation using an automated device and retain the memory of this device for the purpose of comparison with similar optical image, read in process control this automated device to ensure proper positioning of the controlled portion relative to the optical path of the automated device.

The technical result of salsabila, is heterogeneous. At the same time, this piece of paper gets some transparency, and if you register this site in transmitted optical radiation, it is possible to get a unique picture into force of the random nature of its formation, it will be difficult to reproduce. Thus, a sign of the authenticity of the document is very simple and accessible tool. At the same time, the use of an automated device for reading and analyzing the generated token authentication ensures high accuracy and reliability of control, making the procedure of control is quite intelligent and elegant.

In addition, to strengthen the non-uniformity of transparency in the control zone, the substance impregnating the paper, cause obviously unevenly, for example, using a roller.

In addition, the substance impregnating the paper, cause, at least in part, on the imprint stamp or seal.

In addition, the substance impregnating the paper, cause, at least in part on the signature made by one or another colorant, such as ink.

In the optical image of the mark of authenticity will be included plots with one or Ino is asiausa when applying varnish.

In addition, in substance, impregnating the paper, can be predefined set of discrete inclusions. Their presence will increase the random nature of the distribution of fragments of controlled area having a different transparency.

In addition, the positioning of the controlled portion relative to the optical path of the automated devices use the marks, the original existing document or applied by printing.

In addition, the control area is covered with a protective transparent sticker with printed signs that perform the function of positioning elements of the controlled portion relative to the optical path of the automated device.

In addition, the positioning of the controlled portion relative to the optical path of the automated device, you can use the edge of the sheet of paper on which the document.

In addition, you can read an optical image of at least one of the sides formed of controlled area in the reflected radiation.

The method is implemented as follows.

After it is or a special roller with a ribbed surface on the piece of paper, an exciting part of the seal and/or signature, put a varnish and allow to dry. The paint quality is very convenient to use nail Polish, in particular lacquer with glitter. Then cover the area with duct tape, which is applied to sign a special form, such as a geometric shape like a rectangle, used to uniquely positioning the read image relative to the optical path of the automated registration device. To read in passing radiation of paper is inserted into the slit automated registration device so that the positioning covered probing optical radiation, and produce the registration of the optical image of the monitored area enclosed within the boundaries of positioning geometric shapes. Registration is produced on the photographic performed, for example, in the form of a matrix. Because of the different transparency fragments of controlled area, resulting from the combination of the cured varnish, discrete inclusions, ink, paint, seal, non-uniformity of the paper, the photographic elements will have different lighting. Output signals from the outputs of the photographic elements, the conversion is the process control for comparison with a similar set, obtained by reading the optical image of the monitored section of this document. Additionally, you can read an optical image of one side of the controlled area in the reflected radiation, because the reflection impregnated structure of the paper is uneven, especially in the presence of discrete reflective inclusions. Automated device for recording optical images of the identification elements in transmitted or reflected probing radiation already exist and are used for reading and recording of optical images of the optical seals.

1. The method of determining the authenticity of a document on paper, which consists in controlling the transparency paper and memorizing the information received for the purposes of later comparison with similar information obtained in the audit process, characterized in that the controlled area is formed by coating on the paper substance, which soaks into the paper and polymerizable with providing uneven transparency, for example varnish, the optical image is read in passing optical radiation using an automated device and retain the memory of this device DM device to provide controlled positioning portion relative to the optical path of the automated device.

2. The method of determining the authenticity of the document under item 1, characterized in that the substance impregnating the paper, is applied unevenly, for example, by using a ribbed roller.

3. The method of determining the authenticity of the document under item 1 or 2, characterized in that the substance impregnating the paper, cause, at least in part, on the imprint stamp or seal.

4. The method of determining the authenticity of the document under item 1 or 2, characterized in that the substance impregnating the paper, cause, at least in part, on the signature, executed in ink.

5. The method of determining the authenticity of a document according to any one of paragraphs.1-4, characterized in that the substance impregnating paper, pre-enter discrete inclusions.

6. The method of determining the authenticity of a document according to any one of paragraphs.1-5, characterized in that the positioning of the controlled portion relative to the optical path of the automated devices use the marks, the original existing document or applied by printing.

7. The method of determining the authenticity of a document according to any one of paragraphs.1-5, characterized in that the control plot covered with a protective transparent sticker with nonessential tract automated device.

8. The method of determining the authenticity of a document according to any one of paragraphs.1-5, characterized in that the positioning of the controlled portion relative to the optical path of the automated devices use the edge of the sheet of paper on which the document.

9. The method of determining the authenticity of a document according to any one of paragraphs.1-8, characterized in that it further reads an optical image of at least one of the sides of the formed mark of authenticity in the reflected radiation.

 

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