Protection property and method for its manufacture

FIELD: printing industry.

SUBSTANCE: invention relates to a method of manufacturing a protection property for the protective element, counterfeit-proof paper or data medium. The method of manufacturing a protection property for the protective element comprising a substrate which has at least one through hole and at least one marking in accurate register with this hole. The substrate, at least in the area of the manufactured marking is equipped with a marking substance modifiable by laser. During the same technological operation by exposure of laser radiation at high laser power at least one through hole is made in the substrate. By exposure of laser radiation at lower laser power at the marking area the marking substance is modified and thus at least one marking is created in accurate register with the through hole.

EFFECT: proposed protection property enhances the counterfeit protection level of the protective element.

23 cl, 5 dwg

 

This invention relates to a protective feature for the protection element is protected from a fake paper or a data carrier containing the substrate, which must implement at least one through hole and at least one marking in exact register with the hole. The invention, in particular, relates to a method of manufacturing a protective characteristic of this type, as well as the protection element is protected from a fake paper and of a data carrier with such a protective sign.

Often identity, such as credit cards and ID, by means of laser engraving supply individual designation. It has long been known also create holes in securities documents with the help of laser cutting. For example, in the publication DE 4334848 C1 describes a security hole in a window that is closed with a transparent protective film, which can make the process of laser cutting.

On this basis the purpose of this invention is a further improvement of the protective elements, protected from forgery of securities and holders of named data type in regard to their protection against forgery.

This task is solved through the method with the features of the main claim. The relevant information about the protective element is protected from a fake paper and media data t is Kim protective grounds stated in the independent points. Embodiments of the invention are subject of the dependent claims.

According to the invention in this way provided that

a) a substrate, at least in the area of manufactured marking supply modified by laser marking substance and

b) during the same technological operations

b1) through exposure to laser radiation at higher power laser in the substrate is performed at least one through hole, and

b2) through the action of laser radiation at lower laser power in the area of marking modify modifiable by laser marking substance and, thus, create at least one marking in exact register with a through hole.

The sequence b1) and b2) can be any. First, can perform the operation b1) and only after this operation b2) or operation b2), and then the operation b1).

The proposed method relates to the manufacture of protective characteristic that can exist in a separate protective element for applying or introducing in the media data is protected from a fake paper or protective film for the manufacture of valuable documents and similar objects or data carrier, for example a banknote, certificate, or similar document. It is important only to protect the private element, tamper-resistant paper or a data carrier had the backing of the protective trait, in which I create through holes and marks in exact register with them. Even if below to simplify it usually goes about the holes and markings in the plural, it is always assumed that in accordance with the invention, the substrate can also be only one hole and one label.

In a preferred embodiment of the invention produce at least one through hole and at least one marking in exact register with them, which pass into each other without a gap. This can be achieved, for example, due to the fact that the laser beam is constant along the cut hole and implement labeling and at the transition from cutting through the holes to introduce labelling reduces the energy of the laser radiation, namely from a higher power that is greater than the energy required for cutting the substrate to a lower energy values, which cutting of the substrate is no longer enough, but which still lies above the energy of reaction of the marking substance. By this measure the hole and marking are produced in one working operation using the same laser beam, so they are in exact register with each other.

The fit is accordance with another preferred embodiment of the invention, at least one through hole and at least one marking in exact register can be manufactured with a gap between them. When the continuous maintenance of the laser beam energy of the laser radiation in the interval between the cut hole and implemented by marking may be reduced to zero or, at least, to the value that lies below the energy of reaction of the marking substance. Through this hole, gap and marks are produced in one working operation using the same laser beam; thus, they are in exact register with each other.

The substrate in the area of the through holes is preferably left free to be modified by laser marking substances, so that the modification of the boundary of the plot holes with a laser beam excluded.

Alternative substrate can provide modified by laser marking substance also in the area of the through holes, so when creating a through-hole modified by laser marking substance in the vicinity of the holes modify the cutting laser beam. Thus the expression "in the vicinity of the holes" implies not only a regional area, directly adjacent to the hole, but the plot, which lies near the hole after a certain short period. A short period, depending on the application, there may be several tenths millime the RA or a few millimeters.

To provide a substrate marking substance in a preferred variant of the invention, the marking substance is applied on its surface, for example, by a printing method. In accordance with another preferred variant of the invention the marking substance is introduced into the volume of the substrate. To do this, depending on the substrate material, there are a variety of ways.

If the substrate is made of paper, marking substance can preferably be mixed already with the formation of paper pulp. Another preferred variant consists in that the marking substance is introduced into the volume of the paper substrate in the immersion bath or paper substrate is impregnated with the marking substance in the sizing press. If the substrate is made from a polymeric film, the marking substance can also embed in the amount of film already in the manufacture of films or advanced during the impregnation operation.

As the labeling substance is preferably suitable substances, the visible color of which changes under the influence of laser radiation. This purpose can be used, for example, thermosetting pigments, in particular ultramarine blue. Preferably can also use the marking substances whose properties in relation to the absorption of infrared radiation, and magnetic is e, electric or y properties change under the influence of laser radiation. Protective signs with holes having such modified with a laser site with a marking substance, in particular, can be used for machine checks for authenticity. Attention is directed to the combination of different detection agents, for example, to make possible both visual and mechanical inspection of the protective sign of authenticity.

Through holes can be manufactured, in particular, in the form of perforations, cuts or extended window sections.

In embodiments of the invention, in which the substrate provided with modifiable by laser marking substance in the area of the holes, marking substance can be modified by exposure to laser radiation, in particular, at the regional site, directly adjacent to the created holes.

According to a preferred variant embodiment of the invention as modified by laser marking substance use modified using laser pigments with effects. At the disposal of a specialist include pigments with the effects of having different properties, in particular, on their surface color, color change under the action of laser radiation is to be placed, energy threshold and the desired laser wavelength. The specialist also known pigments with effects that, when laser irradiation alter not only the visible color, but also properties in relation to the absorption of infrared radiation, as well as magnetic, electric or y properties. Modification of pigments with effects can be done by laser radiation in the ultraviolet, visible or infrared spectral range, for example, by means of CO2laser with a wavelength of 10.6 microns.

In yet another preferred embodiment of the invention applied modified by laser marking substance that does not contain pigments. Marking substances that do not contain pigments, can also be applied on a substrate or embedded in the substrate, for example, in the form of painting or printing inks. When using do not contain pigments marking substances can produce a coating of high transparency, in which high speed can implement persistent and high-contrast markings. Not containing pigments marking substances can be modified by means of laser radiation in the ultraviolet, visible or infrared spectral range, for example, by means of CO2laser with a wavelength of 10.6 microns. Specific, non limiting examples modifier is controlled by laser marking substances, not containing pigments described in patent documents WO 02/101462 A1, US 4343885 and EP 0290750 B1, which are described in this measure are included in this proposal.

The invention also includes a protective element for counterfeit securities, valuable documents and similar objects with a protective sign, made by one of the above methods, and the protective element has a substrate in which through the action of laser radiation generated by at least one through hole and at least one mark in exact register with a through hole, and which in the area of the marking contains modifiable by laser marking substance. Such a protective element, for example, in the form of a security thread, a label, a conversion element or the protective film for window plot or holes may be created in the securities document, such as a banknote.

In addition, the invention also covers anti-forgery paper for the manufacture of valuable documents and similar objects with a protective sign, made one of the described ways, and counterfeit paper has a substrate in which through the action of laser radiation generated by at least one through hole and at least one mark in exact register with a through hole, and which in the area markerassisted modified by laser marking substance. Instead of creating a hole right in counterfeit paper this paper can also supply protective element of the above type.

Further, the invention also includes a data carrier with a protective sign, made by one of the above methods, in particular the valuable document such as a banknote, certificate, or similar object, and the data carrier includes a substrate in which through the action of laser radiation generated by at least one through hole and at least one mark in exact register with a through hole, and which in the area of the marking contains modifiable by laser marking substance. Instead of embedding holes directly in the data carrier this carrier can also provide relevant invention the protective element or manufacture of the relevant invention is protected from a fake paper.

Below based on the drawings are explained other examples of implementation and advantages of the invention. For greater clarity, the scale and proportions are not respected.

In the drawings shows the following.

Figure 1. Schematic representation of the banknote with the proposed area of the protective trait.

Figure 2. Detailed view of the shield area of the sign according to figure 1.

Figure 3. Schematic representation of the time variation of the energy and laser radiation in the manufacture of the proposed method through holes and marks in exact register with a through hole.

4 and 5. Detailed views of the parts of the protective signs in accordance with additional embodiments of the invention.

The invention is illustrated on the example of the banknote. With this purpose in figure 1 and 2 schematically bill 10, which is the proposed site 12 protective characteristic, shown in more detail in figure 2, is supplied manufactured using a laser bore and appropriate labelling in exact register.

In the top view, as shown in figure 2, it is seen that the section 12 by means of laser radiation in the paper substrate 16 10 banknotes was carved through hole 14. Hole 14 in several places goes directly in color, for example, marked in red 18, which in this example embodiment of the invention is formed near overhead pentagons and in exact register with the hole 14.

To make the hole 14 and the marking 18 with accurate wiring, paper substrate 16 before laser cutting on the portion 20 of the generated marking provided modifiable by laser marking substance that when exposed to laser radiation shows a corresponding color change.

During laser cutting, the laser power purposefully vary to alternate cutting paper and the modification of the marking substance. Figure 3 schematically is provided to change 30 in time of laser energy, laser cutting. ESdenotes the threshold energy required for cutting the backing paper 16, EM- energy reactions marking substance above which is an appropriate response, in this example, the change in red color.

During the time interval tHcreate a laser beam with high energy EHthat is greater than a threshold ESyou need to cut the backing paper 16, and lead the laser beam so that the cut part 14-1, as shown in figure 2, the holes 14.

Then by the time interval tLthe laser power is reduced to a lower energy ELthat cutting of the substrate 16 is not enough, but still exceeds the reaction energy EMmarking substances. When the laser beam on the portion 20 of the markings are in the form of pentagonal portion 18-1 of the corresponding marking 18.

After that, the laser energy by the time interval tHagain to increase energy EHand cut out the next part 14-2 holes. During the next time interval tLwith lower energy ELproduce the next part 18-2 marking 18. This process is repeated until then, until you make all the hole 14 and the entire marking 18. As the hole 14 and the marking 18 is manufactured during the same working operation using the same laser Lou who and, they are in exact register.

Figure 4 shows another example embodiment of the invention, in which a through hole 14 and the marking 28 in exact register with them to create with located in between the gap. For this purpose, the laser energy in the time interval t0between laser cutting (tHand laser etched (tL) reduce to zero or, at least, to the value of E0that is less than the energy EMreaction, and in this time interval are the laser beam from the edge of the 14-R holes 14 to the starting point 28-R introducing part marking. After making this part of the marking with energy ELlaser energy is lowered again to E0divert the laser beam back to the edge point 14-R holes 14, and continue to cut the holes. Thus, there is a hole 14 and located between the marking 28 in exact register with him.

In yet another example, which is shown in figure 5, modified by laser substance is equipped with not only the plot of manufactured marking, but the plot is generated holes. Thus, along with the marking 18 made, as in the example according to figure 2, when cutting holes 14 create a profile edge 38 in exact register with the hole 14 and the marking 18.

The appearance of this profile edge 38 laser cutting obyasnyau the Xia, in fact, the Gaussian spatial distribution of the energy beam cutting laser. While in the inner region of the beam cutting laser threshold energy ESrequired for cutting the substrate 16, is exceeded, the energy density of the beam outside the laser spot continuously drops to zero. Therefore, there is an outer region of the beam cutting laser, in which the local energy is EMto ESso that in this region induce color change marking substance and the substrate is not cut. Thus, the paper substrate 16 by the laser cutting on the regional section 38 of the cutout holes 14 paint with excellent register relative to the holes 14 and the marking 18. The width of the painted edge section 38 depends on the cross-section of the beam, energy of the reaction is introduced labeling substance and material properties of the substrate 16.

In addition to modifying the marking substance through the actual laser radiation are taken into account also the modification due to being created by the laser cutting heat. Thus, the modified boundary plot holes can be larger than the divergence of the beam.

The marking substance can also remove or destroy directly next to the cut edge of the hole 14 and to modify it, only starting from a certain small Prohm the duck from the cut edge. For example, if the marking substance remove or destroy with energy higher than the energy EDlaser and acts ratio EM<ED<ES, marking substance is removed in the inner edge region of the laser beam, in which the local power functions the inequality ED<E<ESin the outer region of the beam, which is located closer to the outer edge and for which the inequality EM<E<EDmasking substance modify. When laser cutting is hole 14, which, along with combined with high precision marking 18 has perfectly combined the modified area surrounding the hole 14 through a small gap.

1. A method of manufacturing a protective feature for the protection element is protected from a fake paper or a data carrier containing the substrate, which implement at least one through hole and at least one marking in exact register with the hole in which:
a) a substrate at least in the area of manufactured marking supply modified by laser marking substance and
b) during the same technological operations
b1) through exposure to laser radiation at higher power laser in the substrate to create at least one end-to-end re rsta and
b2) through the action of laser radiation at lower laser power in the area of marking modify modifiable by laser marking substance and, thus, create at least one marking in exact register with a through hole.

2. The method according to claim 1, characterized in that the at least one through hole and at least one marking in exact register with a through hole made with the transition into each other without a gap.

3. The method according to claim 1, characterized in that the at least one through hole and at least one marking in exact register with a through hole made with a gap between them.

4. The method according to claim 1, characterized in that the substrate in the area of the through holes left free to be modified by laser marking substance.

5. The method according to claim 1, characterized in that the substrate supply modified by laser marking substance in the area of the through holes, so that when creating a through-hole modified by laser marking substance in the vicinity of the holes modify the same laser beam.

6. The method according to claim 1, characterized in that the substrate to cover the marking substance.

7. The method according to claim 1, characterized in that the marking substance segments is Aut in the substrate.

8. The method according to claim 1, characterized in that the substrate is made of paper.

9. The method according to claim 8, characterized in that the marking substance to mix with the formation of paper pulp.

10. The method according to claim 8, characterized in that the marking substance is introduced into the volume of the substrate in the immersion bath.

11. The method of claim 8, wherein the substrate is impregnated with the marking substance in the sizing press.

12. The method according to claim 1, characterized in that the substrate is made from a polymeric film.

13. The method according to claim 1, characterized in that the substrate supply marking substance, a visible color change by exposure to laser radiation.

14. The method according to claim 1, characterized in that the substrate supply marking substance whose properties in relation to the absorption of infrared radiation, magnetic, electric or y properties change through exposure to laser radiation.

15. The method according to claim 1, characterized in that the through holes are made in the form of perforations, cuts or extended window sections.

16. The method according to claim 5, wherein the modifiable by laser substance by exposure to laser radiation change at the regional plot holes adjacent to izgotovliaemye holes.

17. The method according to claim 1, otlichuy is the, as modified by laser marking substance use modified using laser pigments with effects.

18. The method according to claim 1, characterized in that the applied modified by laser marking substance not containing pigments.

19. The method according to claim 1, characterized in that to create holes and modifying the marking substance is applied laser radiation in the ultraviolet or visible spectral region.

20. The method according to claim 1, characterized in that to create holes and modifying the marking substance is applied laser radiation in the infrared spectral region, in particular the emission of CO2-laser with a wavelength of about 10.6 microns.

21. Protective element for counterfeit securities, valuable documents and similar objects with a substrate in which through the action of laser radiation generated by at least one through hole and at least one mark in exact register with a through hole and modifiable by laser marking substance in the area of the markings made by the method according to any one of claims 1 to 20.

22. Tamper-resistant paper for the manufacture of valuable documents and similar objects with a substrate in which through the action of laser radiation generated by at least the bottom through hole and at least one mark in exact register with a through hole, and modified by laser marking substance in the area of the markings made by the method according to any one of claims 1 to 20.

23. The data carrier, in particular a valuable document such as a banknote, certificate, or similar object with a substrate in which through the action of laser radiation generated by at least one through hole and at least one mark in exact register with a through hole, and modified by laser marking substance in the area of the markings made by the method according to any one of claims 1 to 20.



 

Same patents:

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FIELD: printing.

SUBSTANCE: invention relates to a paper and method of its manufacture for covered instruments or securities, as well as to the form of intaglio print for pressing on such paper. The method consists in the fact that at the stage of intaglio print at least one protruding embossing design is applied on paper for production of covered instruments. At that during the stage of intaglio print additionally a set of leveling elements is created, which are distributed on the surface of the paper for production of covered instruments, having a convex relief structure.

EFFECT: alignment of the profile of paper for production of covered instruments documents.

30 cl, 10 dwg

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