DE29903497U1 - Security document with chemiluminescent properties - Google Patents

Description

PATENT ATTORNEY· • · ··

DR. -ING.

Dipl.-lng.
EUROPEAN PATENT & TRADEMARK ATTORNEY

PO Box 3160 D-88113 Lindau (Bodensee) Telephone (08382) 78025 + 9692-0 Fax (08382) 78027 + 9692-30 E-mail: Riebling@t-online.de

02/24/1999 12641.0-B1531 N-58-nem

Applicant: Bundesdruckerei GmbH Oranienstrasse 91 D-10958 Berlin

Safety document with chemiluminescence properties

The subject of the innovation is a security document with chemiluminescent

IJ properties. The state of the art in security documents is that these

|| Documents must be provided with certain authenticity features in order to

to protect them against forgery. It is known to protect such documents with

J pigments, and these pigments e.g. in UV light

visible. The disadvantage of this arrangement is that these segments can easily be removed from the surface of the security document and therefore do not offer a particularly high level of security against forgery of the security document. In addition, these security elements do not actively light up, but must be stimulated from the outside.

The innovation is therefore based on the task of developing a security document of the type mentioned above in such a way that it can be subjected to an active security check without any additional external aids, i.e. that a security feature can be actively identified in the event of a certain manipulation.

To solve the problem posed, the innovation is characterized by the technical teaching of claim 1.

Home address: ' Bank accounts: Postal checking account

Rennerle 10 Bayer. Vereinsbenk Lindau (B) N* 12W<1«0 (8LZ 60089298)· Munich

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414848-808 (bank code 70010080)

The key feature of the innovation is that there is at least one limited area on and/or in the security document that is saturated or filled with a first active substance and that a second active substance can be added to this area with the first active substance, which can be made to react with the first active substance, whereby the reaction is a chemiluminescent effect. If the two active substances are brought into contact with each other, a chemical reaction occurs which leads to a self-illuminating, luminescent effect.

The main advantage is that, due to this chemiluminescence effect, an active security element can be triggered only by mere manipulation, i.e. by bringing two active substances together.

In a preferred embodiment of the innovation, it is provided that the active substances are constructed according to the disclosure in EP 663560 A2 or EP 472954 A1 or EP 429821 A1 or EP 403809 A3.

A chemiluminescent effect is achieved here through a chemical reaction between these two active substances, whereby the reaction mechanism takes place in such a way that the energy released by the chemical reaction is converted into visible light. The colors are irrelevant here; the substance can be selected in such a way that a green, red or yellow glowing effect or all mixed colors are produced.

In a first embodiment of the present innovation, it is intended to design a security document as an admission ticket, with two diametrically opposed printing surfaces of the security document. These printing surfaces can be separated from one another by a corresponding fold line. One of the printing surfaces contains one active substance. It is irrelevant how the active substance is contained in the printing surface. The active substance can either be present in the form of microcapsules, i.e. enclosed by the microcapsules, with the microcapsules themselves forming the printing surfaces by means of the printing ink, while on the opposite printing surface the other active substance is also enclosed in microcapsules and thus forms the other printing surface.

If this security document is now folded along the fold line, the two printed surfaces are brought into opposition and if one presses the two surfaces together with a finger or other mechanical action,

If the printing surfaces are pressed against each other, the microcapsules are at least partially destroyed, the active substances enclosed in the microcapsules mix with each other and enter into a chemical reaction that is associated with the emission of light.

This document then lights up automatically, regardless of whether the two halves are unfolded or not, because the reaction then progresses even if the two printed surfaces are moved away from each other.

The chemical reaction process is irreversible and the light emission can occur over a long period of time, for example over a period of 8 hours or more.

This time depends on the concentration of the active substances in contact, the temperature, the surface and other reaction mechanisms.

Of course, the innovation is not limited to folding the security document along a fold line. It can also be provided that a security document A is paired with a security document B, i.e. if you put security document A and security document B in front of each other and press the two printed surfaces together using mechanical force, the reaction mechanism is also triggered. In this way, different security documents that belong together in pairs can be checked for authenticity.

Of course, it is not necessary for one of the printed areas to be part of a security document. This printed area can also be fixed to a control area in order to test the authenticity of a security document. In this case, the security document to be tested only has one printed area, while the other printed area is fixed to a control area, meaning that only the security document with its one printed area can be tested.

In a further embodiment of the innovation, it is provided that two chambers are arranged on a security document, either next to each other, one above the other or at a distance from each other, with at least one of the chambers having a predetermined breaking point which ensures that when this predetermined breaking point is broken, the active substance flows from one chamber into the other and

the two active substances mix in the resulting common chamber and lead to the desired chemiluminescent effect.

In a further embodiment, it is provided that only a single active substance is present on the security document, which is either bound in the printing ink or which is present in corresponding receiving reservoirs and that the chemiluminescent reaction is also triggered by means of a dripped-on active substance.

In a third embodiment, the security document has a single chamber containing microcapsules containing the various active substances. If the microcapsules are destroyed by pressure on this chamber, the active substances flow into each other and also trigger the chemiluminescent effect.

In a further embodiment, the chemiluminescent effect is triggered in the area of an adhesive layer between two films or film strips that are attached to one another. In this adhesive layer, the microcapsules are filled with the different active substances, distributed randomly, and when the two films are torn apart, the adhesive layer is torn open due to the adhesive force; the microcapsules are destroyed and the active substances contained in the microcapsules flow into one another and trigger the desired chemiluminescent effect.

In this way, such a security device can also be used to check whether certain documents, letters, etc. have been opened, because after an unwanted opening the adhesive surface will glow brightly.

The subject matter of the present invention arises not only from the subject matter of the individual claims, but also from the combination of the individual claims with one another.

All information and features disclosed in the documents, including the summary, in particular the spatial configuration shown in the drawings, are claimed as essential to the invention insofar as they are new compared to the prior art, individually or in combination.

The invention is explained in more detail below with reference to drawings showing several embodiments. Further essential features and advantages of the invention are apparent from the drawings and their description.

Show it:

Figure 1: Schematic plan view of a first embodiment of a security document

Figure 2: The security document according to Figure 1 in a folded state Figure 3: A second embodiment of a security document Figure 4: A third embodiment of a security document Figure 5: A fourth embodiment of a security document Figure 6: A fifth embodiment of a security document

The security document 1 according to Figures 1 and 2 consists essentially of a carrier material, which can consist of paper, a film or any other carrier material. It can also be a textile, a plate-shaped material, a plate itself, a metal part or the like.

On the security document, oppositely positioned printing surfaces 2, 3 are arranged, which are applied, for example, using a printing ink, and microcapsules 5, 6 are arranged in the printing surface. The microcapsules 5 contain one active ingredient component, while the microcapsules 6 contain the other active ingredient component.

The security document 1 can be folded along a fold line 4.

To check the authenticity of the security document, in this embodiment the security document 1 is folded or unfolded along the fold line 4 so that the two printed surfaces 2, 3 are placed opposite each other as shown in Figure 2. If mechanical pressure is now applied to the two opposing printed surfaces 2 in the direction of the arrows 15, 16, the microcapsules 5, 6 burst and the active substances contained in the microcapsules flow into each other and trigger the previously mentioned chemiluminescent reaction. The security document begins to glow. It does not matter whether it remains in the folded state as shown in Figure 2 or whether it is unfolded again.

Of course, the invention is not limited to a foldable security document, because the folding line 4 can also be a dividing line, i.e. there are two independent parts of a security document.

It can also be provided that, for example, the printing surface 2 is attached to a stationary surface and the security document to be checked only has the printing surface 3. To check such a security document, the printing surface 3 is then placed opposite the stationary printing surface and the two surfaces are pressed together so that the microcapsules 5, 6 burst and the active ingredients flow into one another.

Instead of embedding microcapsules in printing surfaces, other storage mechanisms for the active ingredients to be mixed are also provided.

The active ingredients can be introduced into a sponge-like substance which is protected from above by a membrane-like cover, whereby by means of an arbitrary destruction (e.g. via a predetermined breaking point), the two membrane-like substances are removed in such a way that the sponge-like reservoirs come into opposition and the active ingredients thus mix.

Instead of such absorption reservoirs for the active substances, micro-absorption reservoirs can also be created, such as hollow fibers made of plastic or textile material or inorganic compounds such as zeolites.

The active substances can also be bound in activated carbon and stored in the reservoirs mentioned above.

It is important that the chemiluminescent effect is only triggered when the two active substances that are to be reacted with each other are brought together in an arbitrary manner.

In the embodiment according to Figure 3, it is provided that different chambers 7, 9 are arranged on the security document 1, 2, each of which has a filling 8, 10 that receives the active substance 13, 14. In one chamber 10, for example, there is a predetermined breaking point 11, so that when mechanical pressure is applied to this predetermined breaking point, the underlying wall of the underlying chamber 7 is destroyed and the two active substances flow into one another and react with one another.

Figure 4 shows, as a further embodiment, that there is only one printing surface 12 which is impregnated with the active substance 13, whereby the second active substance 14 can be arbitrarily supplied from the outside in drop form, spray form or in another form in order to trigger the chemiluminescent effect.

Figure 5 shows as a further embodiment that only a single chamber 17 can be present on the security document to be tested, which can be filled with microcapsules 18 of different active ingredients, wherein a first type of capsules contains the active ingredient 13 and another type of capsules contains the active ingredient 14.

Here too, mechanical damage to the microcapsules 18 leads to a merging of the active ingredients 13, 14 and to a corresponding reaction.

Figure 6 shows the securing of an adhesive closure, where it can be seen that two film strips 24, 25, which can optionally also be connected to one another at the end, are adhesively connected by means of an adhesive layer 23. The previously mentioned microcapsules 18, which contain different active substances 13, 14, are arranged in the adhesive layer 23. If the two film strips 24, 25 are now torn apart in the direction of the arrows 19, 20, a wedge-shaped dividing line 21 forms in the adhesive layer 23, which penetrates the microcapsules 18 and leads to their destruction. A continuous tear line 22 then forms through the entire adhesive layer 23 when this is torn open and the microcapsules 18 are simultaneously destroyed, so that the active substances 13, 14 contained therein mix and the entire adhesive closure glows in a clearly visible color.

This means that adhesive closures can be easily secured against tearing or their tearing can be made visible.

In a preferred embodiment, the two active substances 13, 14 are liquid. They can be slightly liquid or pasty. However, one of the active substances does not necessarily have to be liquid in order to form a solution; it can also be a powdery substance that reacts with an opposite, liquid substance.

Drawing legend

1. Safety document

2. Printing area

3. Printing area

4. Fold line

5. Microcapsules

6. Microcapsules

7th Chamber

8. Filling

9th Chamber

10. Filling

11. Breaking point

12. Printing area

13. Active substance

14. Active substance

15. Arrow direction

16. Arrow direction

17th Chamber

18. Microcapsule

19. Arrow direction

20. Arrow direction

21. Dividing line

22. Tear line

23. Adhesive layer

24. Foil strips

25. Foil strips

Claims (13)

1. Security document with chemiluminescent properties, wherein on and/or in the security document ( 1 ) there is at least one limited area which is impregnated or filled with a first active substance ( 13 ) and a second active substance ( 14 ) can be supplied to this area, which can be brought into chemiluminescent reaction with the first active substance ( 13 ), characterized in that this reaction is a chemiluminescent reaction. 2. Security document with chemiluminescent properties according to claim 1, characterized in that at least one of the active substances ( 13 , 14 ) is enclosed by microcapsules ( 5 , 6 , 18 ). 3. Security document with chemiluminescent properties according to claim 1 and 2, characterized in that the security document ( 1 ) has two substantially opposite printed surfaces ( 2 , 3 ), the first printed surface ( 2 ) containing the first active substance ( 13 ) and the second printed surface ( 3 ) containing the second active substance ( 14 ). 4. Security document with chemiluminescent properties according to claim 3, characterized in that the printing areas ( 2 , 3 ) are separated from one another by a fold line. 5. Security document with chemiluminescent properties according to claims 1 - 4, characterized in that the first active substance ( 13 ) is located on one printing surface ( 2 ) of the security document and the second active substance ( 14 ) is located on the other printing surface ( 3 ) of a second security document of a spatially separated security document pair ( 1 , 1 ). 6. Security document with chemiluminescent properties according to claim 1 and 2, characterized in that one of the two printing surfaces ( 2 , 3 ) is fixedly attached to a control surface. 7. Security document with chemiluminescent properties according to claim 1 and 2, characterized in that two closed chambers ( 7 , 9 ) are arranged on a security document ( 1 ), each containing an active substance ( 13 , 14 ) which can be brought into connection with one another by mechanical action on the chambers ( 7 , 9 ). 8. Security document with chemiluminescent properties according to claim 7, characterized in that the two chambers ( 7 , 9 ) are arranged next to each other, one above the other or at a mutual distance from each other. 9. Security document with chemiluminescent properties according to claim 8, characterized in that at least one of the two active substances ( 13 , 14 ) is liquid. 10. Security document with chemiluminescent properties according to claim 1 and 2, characterized in that only a single active substance ( 13 ) is present on the security document ( 1 ) and the second active substance ( 14 ) is dripped on for reaction. 11. Security document with chemiluminescent properties according to claims 1-10, characterized in that the active substance ( 13 , 14 ) located on the security document ( 1 ) is bound in the printing ink or is present in corresponding receiving reservoirs. 12. Security document with chemiluminescent properties according to claim 2, characterized in that a single chamber ( 17 ) is present on the security document ( 1 ), which contains both different active substances ( 13 , 14 ). 13. Security document with chemiluminescent properties according to claim 2, characterized in that the microcapsules ( 18 ) are randomly distributed in an adhesive layer and are filled with the two different active substances ( 13 , 14 ), wherein by tearing open the adhesive layer ( 23 ) the microcapsules ( 18 ) are destroyed and the active substances ( 13 , 14 ) react with one another.