Method for manufacture of securities, metallographic printing form for manufacture of securities, and securities

FIELD: manufacture of securities.

SUBSTANCE: method involves providing protrusions of equal width at their base portion and of various cross section at apexes within the range of length of each protrusion.

EFFECT: increased extent of protection of securities from counterfeit.

17 cl, 4 dwg

 

The invention relates to a method of manufacturing securities and metallographic printed form for producing securities.

A known method of manufacturing securities, is the impact of metallographic printing form on a medium to transfer ink layer and the subsequent formation of a latent image to protect paper from forgery (US patent No. 4033059, 05.07.1977).

The disadvantage of this method is the low degree of protection.

Here described and metallographic printing form for the manufacture of securities on the working surface of which is recessed to provide educational opportunities on the media hidden colorful images to protect against forgery.

A disadvantage of the known forms is the low degree of protection paper from the fake.

The technical result is to increase the degree of security of documents from forgery.

For how this is achieved by the fact that in it the image is performed in the form of a set of longitudinal and/or transverse and parallel spaced ledges of the paint layer and the hollows between them, and the tabs do the same width at the base and cross section at the top within the length of each protrusion, and the latent image is carried out on plots of each of the projections and depressions through various distribution to asonog layer on their length.

The protrusions and depressions perform straightforward.

The protrusions and depressions perform wavy.

The protrusions and depressions perform closed.

And for metallographic printing plate is achieved that the base width of the recesses on the surface of the form within one of the grooves of the same size, and the top holes are made along the length as smoothly conjugate between a and alternating areas of triangular and trapezoidal shape in cross section.

Base width of the recesses is from 40 to 500 microns.

The height of the grooves ranges from 40 to 120 microns.

The distance between the grooves is from 60 to 300 microns.

According to the proposed method are made securities.

The invention is illustrated by drawings.

1, 2, 3 shows the execution of projections and depressions, a view in plan to the media.

4, 5 - types of grooves on the metallographic printed form for producing securities.

A method of manufacturing securities is the impact of metallographic printing form on a carrier 1 for transferring ink layer 2 and the subsequent formation of a latent image to protect the paper against forgery, in which the image is performed in the form of a set of longitudinal and/or transverse and parallel spaced projections 3 of the paint layer and depressions 4 between them.

<> Moreover, the projections 3 perform the same width at the base and cross section at the top within the length of each protrusion 3 and the latent image is performed on the sections of each of the ridges 3 and valleys 4 by the different distribution of the paint layer on their length.

The projections 3 and the trench 4 can be made straight, wavy 5 or closed 6.

Metallographic printing form for making securities contains on the working surface 7 of the recess 8 to provide educational opportunities on the carrier 1 hidden colorful images to protect the paper from a fake.

Width "a" of the base of the recesses 8 on the surface of the form within one of the grooves of the same size.

The top of the recesses 8 is made along the length as smoothly conjugate between a and alternating triangular sections 9 and 10 keystone shape in cross section.

Width "a" of the base of the recesses 8 is equal to from 40 to 500 microns.

The height "h" of the recesses 8 is from 40 to 120 microns.

The distance between the recesses 8 is from 60 to 300 microns.

Due to the triangular sections 9 and 10 keystone shape creates a latent image, for example, in the form of numbers, which will be manifested in terms of consideration of the imprint at an acute angle.

The latent image is obtained when the contact carrier is in the form of special securities with metallographic printed form. The height of the paint layer on the image areas of the triangular form 9 more sites with trapezoidal form 10.

The obtained latent image can be applied to securities, such as banknotes.

Visibility will allow us to determine the authenticity of the securities, and when copying the effect of the latent image is lost due to homogeneous colorful relief.

The possibility of obtaining various patterns of the latent image by changing the parameters of the recesses 8 allows you to effectively use this invention as a means for protection of securities from a fake.

Thus, the invention increases the efficiency of the protection of securities from a fake.

Industrial applicability.

The invention can be used in the manufacture of the securities.

1. A method of manufacturing securities, is the impact of metallographic printing form on a medium to transfer ink layer and the subsequent formation of a latent image to protect the paper against forgery, in which the image is performed in the form of a set of longitudinal and/or transverse and parallel spaced ledges of the paint layer and the hollows between them, and the tabs do the same width at the base and cross section at the top within the length of each protrusion, and the latent image is carried out on plots of each of the projections and depressions through various distribution layer of paint on their length.

2. The method according to claim 1, in which the protrusions and depressions perform straightforward.

3. The method according to claim 1, in which the protrusions and depressions perform wavy.

4. The method according to claim 1, in which the protrusions and depressions perform closed.

5. Securities, manufactured according to the method according to any one of claims 1 to 4.

6. Metallographic printing form for the manufacture of securities on the working surface of which is recessed to provide educational opportunities on the media hidden colorful image to protect papers from forgery and in which the base width of the recesses on the surface of the form within one of the grooves of the same size, and the top of the recesses made in the form of smoothly conjugate between a and alternating areas of triangular and trapezoidal shape in cross section.

7. Form according to claim 6, in which the base width of the recesses is from 40 to 500 microns.

8. Form according to claim 6, in which the height of the grooves ranges from 40 to 120 microns.

9. Form according to claim 6, in which the distance between the grooves is from 60 to 300 microns.



 

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