JPH07502941A - A credit or guarantee document consisting of an anti-counterfeiting mechanism and a carrier piece with a transferable pattern for producing such document - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] 5. Direct transfer using pressure cylinder (300) and heating support cylinder (301) From the first carrier piece (F) and paper piece (P) passed between The document according to any one of claims 2 to 4, characterized in that:

6. Direct transfer is carried out using a pressure cylinder (303) with a continuous pressure drag (303). 2) and the first small carrier passed between the heated support cylinder (301) Claim 2, characterized in that it originates from a piece (F) and a small piece of paper (P). Documents listed in any one of Paragraph 4 above.

7. The direct transfer was stamped with a die for continuous application onto a sheet of paper. Claims 2 to 4 characterized in that it originates from a first carrier piece (F). Documents listed in any one of the above.

8. Said individual reflective elements (101) onto the surface (10) of the document (D) by direct transfer. ) is discontinuous and the intermediate space ( The document according to claim 1, characterized in that 102) does not have any coating .

9. The discontinuous characteristic of the pattern is a pressure series with discontinuous pressure drag (305). Passed between the cylinder (304) and the heating support cylinder (301') , resulting from an initial carrier piece (F) with a continuous reflective band and a piece of paper. The document described in claim 8, which is a characteristic of the claim.

], 0. The discontinuous characteristic of the pattern is the key to discontinuous adaptation to a piece of paper. A claim characterized in that it results from said first carrier piece (F) being struck with a Documents listed in Section 8 of the scope of

11. Each individual element (101) has a high level of resistance to abrasion and solvents from claim 1 characterized in that it is covered with a protective varnish (204) that Documents listed in any one of Section 1.0.

12, characterized in that each individual element (101) forms a mirror capable of reflecting all visible wavelengths. The document set forth in any one of claims 1 to 11.

13. said individual reflective elements (101) are made of a fine metal layer and preferably aluminum Claim 12, characterized in that it is formed by a fine layer of Ni. document.

14. A mirror formed by at least some of said individual reflective elements (101) is completely unobstructed by geometrical elements that at least partially cover said mirror. The document according to claim 12 or 13, characterized in that it is flat or flat. .

15. A contour in which the individual reflective elements (101) of the reflective surface are in the shape of a quadrilateral; (C) Any one of claims 1 to 14 Documents listed.

160. Said contour (C) is in the shape of a rectangle, the edges (103) of which A claim characterized in that the direction is parallel to the general direction (DG) of the projection element (101). Documents mentioned in paragraph 15.

17, said contour (C) is in the shape of a parallelogram, the edge (103) of said individual The reflective element (101) is parallel to the general direction (DG) of the reflective element (101). Documents listed in scope item 15.

18, the other edge (104) of said parallelogram is located with respect to said general direction (DG); characterized in that it is inclined at a constant angle (a), said angle being preferably close to 45°. The document set forth in claim 17.

19. The width of the contour is small, which is considered to be perpendicular to the general direction (DG). Claims 15 to 18 characterized in that the diameter is at least 3 millimeters. Documents listed in any one of the paragraphs.

20. The length of the contour is considered to be parallel to the general direction (DG). Claim 15 characterized in that it is preferably between 4 and 10 mm. Documents listed in any one of paragraphs 1 to 19.

21, the general direction (DG) of the individual reflective elements (101) is on the short side of the document; Claims 1 to 20, characterized in that the shape is in a rectangular shape parallel to (11). Documents listed in any one of the paragraphs.

22. A forgery in which said document is in the form of discontinuous reflective surfaces (100) on its two sides; a prevention mechanism, the two mechanisms preferably being identical individual reflective elements (101) Any one of claims 1 to 21, characterized in that Documents listed.

2. The credit or guarantee document set forth in any one of claims 1 to 22 A carrier strip consisting of a transferable reflective pattern provided, which can be used as a continuous carrier. upper layer (200) of functional plastic material, hot melt adhesive or wax a fine metal layer (201) constituting the reflective pattern to be transferred; ), and a hot melt adhesive (203 ) A carrier piece characterized by having a multilayer structure having layers.

24, the varnish layer (204) is the hot melt adhesive or wax layer (202) ) and said fine metal layer (201), said varnish layer being particularly resistant to wear and solvents. Claim No. The carrier piece (F) according to item 23.

25. The varnish layer (205) is connected to the fine metal layer (201) and the adhesive layer (203). ), the varnish layer protects the reflective pattern, and the metal particles protect the reflective pattern. The claim is characterized in that it prevents the pattern from penetrating into the paper of the document during transfer. Specification credit or guarantee documents consisting of anti-counterfeiting mechanisms and the manufacture of such documents; The present invention relates to a carrier strip having a transferable pattern which can be applied to a credit document or a guarantee document. or concerning documents constituted by anti-counterfeiting mechanisms. The document may be subject to the nature of the document or The rights granted must protect against forgery, alteration or copying. or a credit document or banknote. For example, title documents, certificates, checks. Hand and traveler's checks, stamps, credit cards, bonds, receipts, rides Guarantee documents such as tickets, ID cards, and passports may be listed; The documents provided are not intended to be limiting.

This work is done using metal wires that are fully or selectively integrated into the paper of the document. The ear can be encoded by discontinuously covering a non-ferromagnetic material with a ferromagnetic material. have already been proposed (e.g. British Patent No. 1.095.286 and British Patent No. 1.127.043).

This method has been used for a long time, especially with detectors adapted to the wire in question. is always unalterably associated with the document's authenticity, but effectively Not protected: The wire image is very thin and almost unnoticeable by naked eye inspection. A very unobtrusive material that is not only unattractive, but also poses little hindrance to document reproduction. It only provides a small reflective surface.

Specialty inks, especially change-effect inks It is an ink that can change from blue to green depending on the nature of the document, for example. Inks that can be used to produce color only when exposed to certain irradiation processes (e.g. UV irradiation) Various methods have been proposed using ink to ink. For example, U.S. Pat. 4.175.776 and European Patent Nos. 0.327.788 and 0. ．． See No. 340.163. These methods are generally cumbersome and their The use is limited to areas of very small area with respect to the area of the document.

A continuous repeating pattern in the form of small pieces is applied to a part of the document through a transfer operation, which can be used as a security feature. Combine those methods by overprinting that part of the document using a It has also been proposed to match (e.g. European Patent No. 0.093.009 (see issue). Or perhaps to preferably prevent color copying. A small area is covered with an ink containing a colored reflective material, e.g. aluminum powder. Overprinting has been proposed (e.g., U.S. Pat. No. 4.066,280 and and No. 4.352.706).

A method of coating a document with an ultra-thin metal film, which is then printed and embossed on the document ( See, e.g., U.S. Pat. No. 4,420,515), as well as holograms on documents. (e.g. French Patent No. 2.535.864, British Patent No. 1) ．． 517.840 and U.S. Pat. No. 4.171.864), or or again intaglio printing (see e.g. French Patent No. 2.192.496) ) is also mentioned.

However, these methods do not attract the attention of a wary or skilled observer. However, it is still relatively cumbersome and it is always preferable to prevent copying of such documents. There is no doubt that it is not a free trial.

The purpose of the present invention is to prevent counterfeiting, both with respect to naked eye inspection and with modern reproduction and copying methods. Credit or guarantee documents whose prevention mechanisms have a higher level of performance than the systems described above. Our goal is to provide the following.

Another object of the invention is to provide a The goal is to provide documents that are protected from copying to a high standard.

A further object of the present invention is that the anti-counterfeiting mechanism It is possible to arrange both sheets of documents that have already been cut in the correct position consecutively. However, when possible, reel operations generally provide the preferred documentation. be.

Finally, it is a further object of the invention that the anti-counterfeiting mechanism is completely adhered to and stamped on the document in question. Resistant to chemical attack and/or abrasion by solvents commonly used in the printing field The goal is to provide documents that can be used.

More specifically, the present invention provides that the anti-counterfeiting mechanism is a series of anti-counterfeiting mechanisms applied to the surface of a document by transfer. formed by individual reflective elements organized in a predetermined general direction with respect to the edges of the document in question. Each individual reflective element is in the form of a discrete reflective surface that is visible to the naked eye. A general method that is unambiguous and does not confuse known optical analysis or replication systems. Dimensions of a few millimeters perceived across the direction and optimum density for a given reflective area. A credit document or security that consists of an anti-counterfeiting mechanism that is characterized by both This concerns documents.

According to certain characteristics, the adaptation of individual reflective elements to the document surface by direct transfer is contiguous, so intermediate spaces between adjacent individual elements are discontinuous to be transferred. Non-reflective, but obviously eye-catching, based on the initial carrier piece with continuous pattern Consists of a visible covering.

In other configurations, the adaptation of individual reflective elements to the document surface by direct transfer is coupled. the intermediate spaces between adjacent individual elements are After transferring the continuous reflective band, printing a discontinuous pattern of white ink on the continuous reflective band. Created by In other configurations, the intermediate space is the first carrier strip. It is created by partial dissolution of the continuous reflection band after the transfer.

According to another specific feature, the direct transfer occurs from the first carrier piece, and the paper piece is pressed pass between a force cylinder and a heated support cylinder; alternatively, direct transfer is best Arising from the first carrier piece, the paper piece is connected to a pressure cylinder with a continuous pressure drag. Pass between heated support cylinders. Also, direct transfer is continuous application onto a sheet of paper. For this reason, it is also possible to create a small piece of carrier from the initial carrier provided by the die. be.

In another form of sequential application of individual reflective elements, by direct transfer to the document surface The adaptation of is discontinuous, so the intermediate space between adjacent individual elements is There is no covering.

The discontinuous character of the pattern is due to the initial carrier piece with a continuous reflective band, and the discontinuous pressure drop. A small piece of paper passing between a pressure cylinder with a rack and a heated support cylinder Alternatively, the discontinuous character of the pattern can arise from its discontinuous adaptation to a piece of paper. from the initial carrier piece provided by the die. in that special case , the non-reflective but visible elements mentioned above do not appear.

Preferably, each individual element has a protection with a high level of resistance to abrasion and solvents. Covered with varnish or lacquer.

Preferably, each individual element forms a mirror capable of reflecting all visible wavelengths. Good in that case Preferably, the individual reflective elements are made of a fine metal layer and preferably aluminum strips. It is formed by a paddle layer. In particular, shaped by at least some individual reflective elements The resulting mirror is at least partially unaffected by the geometric elements that cover it. Perfect or flat.

Preferably, the individual reflective elements of the reflective surface have a quadrilateral contour.

For example, the profile is in the shape of a rectangle with edges parallel to the general direction of the individual reflective elements. another In shape, the contour is a parallelogram with edges parallel to the general direction of the individual reflective elements. in the shape of a parallelogram, preferably with one edge of the parallelogram at a predetermined angle with respect to the general direction. and the angle is preferably close to 45°.

Preferably, in that case it is in a direction that is perpendicular to said general direction. I thought the width of the contour is at least equal to 3 mm and parallel to said general direction. The length of the contour considered in a certain direction is preferably 4 mm and 10 mm. It is between the rimmeters.

Preferably, the general direction of the individual reflective elements is parallel to the short side of said document.

Two sides of the document will ultimately consist of anti-counterfeiting features in the form of discontinuous reflective surfaces. the two mechanisms are preferably formed by the same individual reflective elements. It will be done.

The invention also provides a credit or guarantee document comprising at least one of the features mentioned above. Regarding the carrier strip consisting of a transferable reflective pattern that provides a upper layer of plastic material that functions as a wax or adhesive that melts in high temperature conditions a layer of agent, a very fine metal layer that constitutes the reflective pattern to be transferred, and the metal layer. A multi-layered structure with successive layers of hot melt adhesive that adheres to the surface of a paper document. characterized in a certain way.

Preferably one layer of varnish or lacquer is also coated with hot melt adhesive or wax layer and a fine metal layer, said varnish layer is particularly resistant to abrasion and solvents. to protect the reflected pattern that will be transferred.

Preferably, another varnish layer is further provided between the fine metal layer and the adhesive layer, The varnish layer prevents metal particles from penetrating the document paper during transfer of the reflective pattern. give protection.

Other objects and advantages of the invention are attached with reference to specific embodiments with reference to the following figures: It will become clearer from the drawings and the description below.

FIG. 1 is a plan view of a document comprising a counterfeit prevention mechanism according to the present invention.

Figure 2 is an enlarged view of two individual reflective elements forming part of the anti-counterfeiting mechanism described above. It is.

Figure 3 illustrates an alternative form of Figure 2 in which the contours of the individual reflective elements are rectangular. be.

Figures 4a and 4b show the results with and without protective varnish, respectively. , two cross-sectional views along line IV-IV in FIG. 1 illustrating two arrangements; .

Figures 5a and 5b show two alternative shapes of a first carrier piece according to the invention. FIG. 2 is a cross-sectional view illustrating the multilayer structure of If not used to provide a copy of the respective anti-counterfeit mechanism (that Therefore, these figures are similar to the above-mentioned figure 4a showing the document after the transfer of the anti-counterfeiting mechanism. and FIG. 4b).

Figure 6 shows the space between two cylinders, a pressure cylinder and a heated support cylinder. This diagram schematically explains the continuous transfer of the anti-counterfeiting mechanism by passing Ru.

Figure 7 shows that the first carrier strip carrying the transferred anti-counterfeiting mechanism and the paper strip are connected together. FIG. 3 is a profile diagram illustrating the cylinders passing between them;

Figures 8 and 9 show pressures consisting of discontinuous and continuous pressure drags, respectively. Figure 7 illustrates two alternative shapes of Figure 7 with cylinders.

Figure 10 shows the transfer of an anti-counterfeiting mechanism onto a piece of paper that is continuously moved through a machine. 1 is an overall view of a machine advantageously used for continuous efficiencies; FIG.

FIG. 1 shows the shape of a rectangular sheet 1 comprising a counterfeit prevention mechanism 100 according to the present invention. This is a document.

According to a basic feature of the invention, the anti-counterfeiting mechanism is provided with respect to the edges 11 and 12 of the document. by a series of individual reflective elements 101 arranged in a predetermined general direction DG. It is in the shape of the discontinuous reflective surface 100 that is formed.

As will be described in detail hereinafter, the individual reflective elements 101 are formed by transfer (preferably high temperature conditions). ) is applied to side 10 of the document.

Furthermore, each individual reflective element 101 crosses the general direction DG by a few millimeters. Especially high reflective capacity, with recognizable dimensions and reflective phenomena clear to the naked eye and relatively large reflective surfaces to confuse known optical analysis or replication systems. For a given reaction evaluated by a coefficient corresponding to the ratio of reflection area/perimeter length in a It has both optimal density for the radiation area. A value of at least Q, 5mm is as stated above. It is considered that the ratio is satisfactory.

This document has a printed graphic feature G and general direction DG on the short side of the document. It consists of a discontinuous reflective surface 100 parallel to 11. Such an arrangement is one of the possible implementations. and the direction DG chosen parallel to one of the edges of the document, in this case the short edge, is Preferred if the document is intended to be passed through automated processing machinery, in which case It will be appreciated that the document is moved parallel to one edge.

Each individual element 101 may therefore form a mirror capable of reflecting all visible wavelengths. So Preferably, the individual reflective elements 101 are made of a fine metal layer and especially aluminum formed by a fine layer of umum. For example, the layer is approximately 0.05 μm thick. Ru. Although the choice of aluminum is preferred due to its very high reflection coefficient, Obviously, other metals could also be selected. at least some individual reflections The mirror formed by element 101 has a geometric feature that at least partially covers the mirror. Preferably perfect or flat, without being disturbed by grains.

A discontinuous surface 100 formed by a plurality of individual reflective elements 101 is arranged in a general direction D. The large dimensions of each individual reflective element 101 in the direction transverse to G allow for analysis or replication. Virtually blinds the system. For this reason, selectively metal strips or paper The known method involves embedding small pieces of It must be noted that this is not possible. In this case, depending on the transfer method, It is possible to use discontinuous surfaces with a width of more than 3 mm and up to 10 mm.

Additionally, each individual reflective element for maximum dazzling of analysis or replication systems. 101 must exhibit optimal density for a given reflective area. this is , the surface area of each individual reflective element 101 is as large as possible for a given circumference, or For a given reflective area, the largest circle inscribed in the contour of an individual reflective element is the largest It means that.

FIG. 2 shows two individual reflective elements 10 that are part of the anti-counterfeiting mechanism 100 described above. 1, in which each individual reflective element 101 has a quadrilateral shape, and also a square shape. Specifically, it is a contour C in the shape of a parallelogram. Therefore each individual reflective element 10 1 is between two lines 105 and 106 parallel to the general direction DG of the discontinuous surface 100. They are arranged in a discontinuous manner. In selective shapes, as shown in Figure 3. , a contour C whose edge (in this case, edge 103) is in the shape of a rectangle roughly parallel to the direction DG is defined. can be used. However, the embodiment of FIG. It is possible to have a short leading edge at the end point of the This is preferable because it can effectively avoid the risk of detachment of the metal particles. No. In the configuration shown in Figure 2, the edge 103 of each individual reflective element 101 is flat in the direction DG. rows, the dimensions of which are preferably about 2 to 10 mm, while the short edges 104 are It is inclined at a predetermined angle with respect to the general direction DG, and the angle is preferably 45°. Close to. The dimensions of the individual rectangular reflective elements illustrated in FIG. 3 are preferably as described above. , the width l is approximately 2 to 10 mm (corresponding to the distance between the contour lines 105 and 106) The width is approximately 2 to 10 mm. Their dimensions are for each individual selected in such a way as to give a minimum surface area of 10 m2 for a reflective element of Ru.

The effective width of each such individual reflective element is relatively practical. It is possible to achieve very satisfactory coefficients of mirror reflection, as is the case, and its effective The width can also be obtained for strips or bands selectively embedded in the paper of the document. significantly larger than.

FIG. 1 shows the presence of a discontinuous surface 100 on the surface 10 of the document that constitutes an anti-counterfeiting mechanism. As shown, such anti-counterfeiting features are provided on two sides of the document, and each anti-counterfeiting feature is in the form of a discontinuous surface, the two features are preferably identical individual reflective elements 101 It is clear that it can be formed by

This ensures that the optical spectra are clear to the naked eye and have known optical spectra, regardless of the format in which the document faces. cause reflection phenomena that dazzle analysis or reproduction systems.

As previously mentioned, the continuous individual reflective elements 101 are preferably It is applied to the surface of the document by a transfer process.

Adaptation to the surface of the document by direct transfer is possible between adjacent individual reflective elements 101. An interspace 102 is formed from the first carrier piece with the discontinuous pattern to be transferred. It begins with a non-reflective, but needless to say continuous coating consisting of a visible coating. It's okay. Figure 6 shows two systems consisting of a pressure cylinder and a heated support cylinder. That type of anti-counterfeiting mechanism (its pattern) by passing between the cylinders. This is a diagram to explain continuous transfer (in this case, discontinuous).

FIG. 6 shows the structure before passing between the pressure cylinder 300 and the heating support cylinder 301. When a small piece of paper P passes around continuous rollers 311, 312 and 313, it is unraveled. The reel 310 shown in FIG. The beginning that carries the pattern to be transferred The carrier piece F is formed by pressing two pieces P and F against each other and applying a predetermined temperature. to produce the desired discontinuous reflective surface 100 in terms of a series of individual reflective elements 101. Cylinders 300 and 301 are used to transfer the discontinuous pattern in such a manner that It is unwound from the reel 314 so as to pass between. Downstream of the transfer, a small carrier piece F or, more precisely, a residue that acts to carry the transferred discontinuous pattern. The clasp is wound onto a reel 315. In this case, as can be seen from Figure 7, two slides Plain cylinders 300 and 301 are used. This allows you to emboss the paper You can transfer beautiful edges without having to apply However, after the transfer operation, the paper is extremely glossy (the gloss is essentially amplified by 5) and the thickness of the paper the paper becomes very slightly longer in the direction of movement (approximately 2%) elongation is normal). If there is a watermark on a document, especially on banknotes, the watermark is After the discontinuous reflection pattern is transferred, it loses its sharpness.

By providing slightly different pressure cylinders, as shown in Figure 9, It is possible to improve the transfer of the continuous pattern.In fact, in this case the pressure cylinder -302 is the maximum for a small piece of paper P that is weighted against the heating support cylinder 301. It consists of a continuous pressure drag 303 that presses the first carrier piece F. Then this thing This gives you the advantage of transfers with clean edges and no embossing on the paper. However, due to the partially applied pressure, the arrangement also causes the paper to lack luster. If a watermark is provided, the sharpness of the watermark can be preserved.

However, the initial carrier strip F consisting of a continuous reflective band that is to be transferred to a document is It is also possible to use

In that case, choose a continuous transfer of continuous reflective bands onto the paper, and then transfer the continuous reflective bands onto the paper. Intermediate spaces between adjacent individual elements are or, in another mode of operation, directly adjacent individuals. Discontinuous transfer of parts of continuous reflective bands to produce intermediate spaces between each element You can also do this.

If the adapted method is the successive application of continuous reflective bands, discontinuous application on the transferred continuous reflective band Intermediate spaces between adjacent individual elements 101 are created by printing a continuous pattern of white ink. Pace 102 can be manufactured or alternatively a transferred continuous reflective band. The intermediate space can be produced by partial dissolution of .

In the case of discontinuous adaptation, as shown in Figure 8, the discontinuous characteristics of the pattern are affected by the discontinuous pressure. Between pressure cylinder 304 with drag 305 and heated support cylinder 301 From a first carrier piece F and a piece of paper P with a continuous reflective band that is allowed to pass through It is also possible for this to occur. Next, the discontinuous characteristic of the pattern is determined by the discontinuous pressure on the continuous reflective band. This results from the knurling action by the force drag 305. However, reflective material The flakes of material tear randomly at the boundaries of the contours of the individual reflective elements. is difficult and this flake may interfere with subsequent offset printing on documents. do not have. By continuous pressure cylinder (Fig. 7) or by continuous pressure drag (Fig. 9) ) can avoid the formation of such flakes of reflective material. It is easy to understand that.

In another form of rotary direct transfer as described above, the structure of the transfer method to the sheet is produced from the first small piece of carrier that is struck by a die that applies the same thing to a piece of paper It can be seen that direct transfer can be provided. Operation modes not shown here are printed. This modality is known to those skilled in the art and involves the transfer of a continuous reflective band onto paper (in this case, The method is to transfer white ink on the continuous reflective band or transfer the continuous reflective band. The application die is continuous when it includes a subsequent printing operation with partial melting. , are discontinuous when such operations are avoided), as well as discontinuous reflections. Concerning the transfer of bands (in this case the applied die is preferably continuous).

The multilayer structure of the first carrier strip according to the invention is described here. This small piece of carrier used to provide a transcription of the anti-counterfeiting mechanism described above, which is Applicable for both continuous and discontinuous patterns.

The cross-sectional view shown in FIG. 5a shows an upper layer 200 serving as a carrier, a hot melt adhesive. A layer of agent or wax 202, e.g. aluminum constituting the reflective band to be transferred. Continuous from the fine metal layer 2 of aluminum and the hot melt adhesive layer 203 This illustrates the first carrier piece F. Layer 200 is preferably a plastic material. for example, a layer of polyester with a thickness of 10 to 15 μm, while gold The metal layer 201 is about a few hundredths of a micrometer, for example 0.05 μm. corresponds to the thickness A wax or adhesive 202 is applied to the polyester layer 200 in a high temperature transfer operation. and the metal layer 201 and has a thickness of about 2 to 5 μm. Ru. The adhesive making up layer 203 instead provides adhesion between metal layer 201 and the paper. Its thickness is approximately 5 μm. Just before the transfer of the metal layer To separate the metal layer 201 from the polyester layer 200, the adhesive layer 203 is melted. It is preferable that the material forming the layer 202 melts at a temperature T1 lower than the temperature T2 at which the layer 202 is formed. Yes. As explained, the transfer operation uses temperatures ranging from 110 to 150°C. Effective. After transfer, the document will have a cross-section as shown in Figure 4a: Therefore, a series of individual reflective elements 101 separated by intermediate spaces 102, and also Traces 203' from the adhesive 203 can be seen. This mark is on the top of the document Penetrates into paper 1 just below. Intermediate space between adjacent individual elements 101 The base 102 originates from the first carrier piece F with the discontinuous pattern to be transferred. It may also consist of a non-reflective but visible coating. This anti-reflective coating In this case, it may be made of adhesive 203' for high temperature applications, but other shapes will be described below. It may also be a protective varnish or lacquer.

Figure 5b has two layers of protective varnish, so it is a more complex multilayer than the one described above. This is to explain a small carrier piece F having a structure.

This structure consists of an upper polyester layer 200 acting as a carrier and a hot melt It consists of adhesive layers 202 and 203, with respect to the latter, the adhesion to the paper is made of polyester. The material is selected so that it has stronger adhesion to the carrier. However, corresponding to layer 201 The metal zone to be applied is here sandwiched between two layers of varnish 204 and 205. , its thickness is about 1 to 5 μm.

The upper layer 204 of varnish has a high level of resistance to abrasion and solvents, so the transfer Protection of the individual reflective elements 101 can be provided. under varnish The side layer 205 also prevents metal particles from penetrating the paper during the transfer operation. The metal zone corresponding to layer 201 is protected. After transcription, the document will appear in cross section as shown in Figure 4b. as described: separated by an intermediate space 102 as described above. individual reflective elements 101 and traces of adhesive 203 emanating from layer 203 ′ is there. However, unlike the cross-sectional view shown in FIG. 4a, FIG. It shows a protective film made up of layers 204 and 205 of varnish, the upper layer being discontinuous. It corresponds to a layer that protects the entire reflective surface. In this case, the intermediate space 102 Completely visible to the naked eye, non-reflective consisting of traces of protective varnish and adhesive for high temperature applications It consists of a covering. However, the thickness of the varnish depends on the pressure and temperature used. You must be aware that it decreases in photo manipulation.

In the case of discontinuous adaptation of individual reflective elements to the surface of the document by direct transfer, adjacent The intermediate spaces 102 between the individual elements 101 are practically free of any covering.

In addition, predetermined dimensions of the document to maximize dazzle for optical analysis or reproduction systems. , it is an attractive proposition to provide as many individual reflective elements 101 as possible. It's a proposal. Preferably, the spaces 102 between adjacent individual elements are in the general direction D It is approximately a fraction of the length of the contour of those elements, considered in the direction parallel to G. So Therefore, for a rectangular document such as a banknote with a width of about 80 mm, at least 5 individual reflective elements are arranged to form a discontinuous reflective surface forming an anti-counterfeiting mechanism. be able to.

Continuous transfer of the anti-counterfeiting mechanism according to the invention onto small pieces of paper in a continuous path fashion Reference is made to FIG. 10 which depicts a machine preferably used to carry out the process.

The transfer machine 400 has a frame structure carrying a reel of paper 401 from which a small piece of paper P is unwound. It consists of objects 406. The paper strip P is first passed through an assembly 4 that adjusts the tension of the paper strip. It passes through a series of rollers forming part 02 and then transfers the anti-counterfeiting mechanism. an assembly that provides lateral guides for accurately positioning a small piece of paper P before 403 is reached. This machine also carries an anti-counterfeiting mechanism that allows the transfer at least one film reel 430 on which a first carrier strip F is wound; has. In this case, the location of the small piece of paper corresponding to the small piece wound on the reel 401 There are four reels 430 for simultaneously transferring four reflective strips of a certain width. Ru. The paper piece P and the first carrier piece F meet at the guide roller 404. , against which the pieces are precisely adapted by the downstream roller 405. I can't stand it.

In this way, the two pieces P and F reach the transfer position in the true sense and this position The device is, for example, a thermal transfer device having a cylinder 407 heated by hot water circulation. Although formed by the assembly, the associated surroundings are not shown here.

The two pieces are movable brackets 4091. :,Than The surface of the heating cylinder 407 is controlled by a system of supported pressure rollers 408. Pressed onto a substantial part. FIG. 10 shows the assembly of rollers 408. Two positions are shown, the working position being the pressing of the roller against the surface of the cylinder 407 , while the rest position is the first of the two pieces F and P under the cylinder. Corresponds to the insertion of Movement from one position to the other is supported by rollers 408. The bracket 409 held by the bracket 409 is raised, lowered, and tilted. This is done by keys 410 and 411.

Downstream of the transfer location, a small piece of paper (on which the reflective surface is transferred) and the first small carrier The rest of the piece (the remaining pieces are from the polyester layer that acts as a carrier) ) is an applicator roller 4 carried by a pivot mounted lever 413. 12 and pass around the first cooling cylinder 414 in which they are applied. The position of the lever is controlled by a coupling jack 427. The two pieces are also the second It passes around the cooling cylinder 415. These small pieces are available to those skilled in the printing industry. As is well known, in order to provide satisfactory small piece contact and fixation, S-shaped It passes around two cooling cylinders. Cooling cylinders 414 and 415 , for example cooled by cold water; the relevant surroundings are not shown here. Next, counterfeit prevention The paper strip P carrying the stop mechanism 100 serves as a tension regulator for the rewinding operation. the assembly 418 whose position is determined by the coupling jack 426. is pushed by a roller 419 carried by a pivot-mounted lever 425, which is It moves toward the attached guide cylinder 431.

The paper piece P carrying the anti-counterfeiting mechanism 100 is then made up of a plurality of adjacent parallel pieces. each consisting of a reflective band (which may be continuous or discontinuous), e.g. the side guide up so that the four pieces reach the cutting position where they can be cut lengthwise. It passes through assembly 420. The cutting position, as understood, is not mandatory at all , formed by a support roller 422 and a cutting wheel 421. forced to amputate The pieces are finally passed around the guide roller 423 before being rewound onto the reel 424. pass through.

After passing around the cooling cylinder 415, the remaining part of the carrier piece (as a carrier) The polyester film 200) that functions as Pass around guide roller 416 before reaching position 417 for rewinding 00. pass

Although other types of machines are envisaged to provide continuous or discontinuous reflective band transfer, It will be appreciated that the transfer positions described above can achieve particularly satisfactory results. This point Regarding European Patent No. 0.08, a high temperature transfer device of this kind is described. See No. 9.494.

The invention is not limited to the embodiments described above, but on the contrary, with respect to equivalent measures: It also includes any alternative shapes that include the basic features described above.

International research’! ”, PCT/EP 92101527.-1, A7-N, PC Continuation of TIEP921O1527 front page (72) Inventor: Sheth, Joachim Federal Republic of Germany D-8500 Nuremberg Emil Nordesh Torase 43 (72) Inventor: Perron, Maurice France Veiloffrey F-78220 Riyu Pasteur 46

Claims (25)

[Claims] 1. A trust or guarantee document consisting of an anti-counterfeiting mechanism, the anti-counterfeiting mechanism Copied on the side (10) of the document (D), with respect to the edges (11, 12) of the document shaped by a series of individual reflective elements (101) arranged in a predetermined general direction (DG) each individual reflective element (101) is in the form of discrete reflective elements (100) made of However, the reflection phenomenon is obvious to the naked eye and dazzles known optical analysis or replication systems. for a given reflective area in such a way as to Documents characterized by having dimensions of several millimeters that are recognized when cut . 2. said individual reflective elements (10) by direct transfer to the surface (10) of said document (D); The adaptation of 1) is continuous and the intermediate space ( 102) originates from the first carrier piece (F) with a discontinuous pattern to be transferred. Claim 1 comprising a non-reflective but visible coating that Documents listed. 3. said individual reflective elements (10) by direct transfer to the surface (10) of said document (D); The adaptation of 1) is continuous and the intermediate space between adjacent individual elements (101) is , after the transfer of a continuous reflective band from the first carrier piece (F), a discontinuity to said continuous reflective band Claim 1, characterized in that the pattern is created by printing white ink. documents. 4. said individual reflective elements (10) by direct transfer to the surface (10) of said document (D); The adaptation of 1) is continuous and the intermediate space between adjacent individual elements (101) is , after the transfer of the continuous reflective band from the first carrier piece (F), partial dissolution of the continuous reflective band occurs. 2. The document according to claim 1, wherein the document is prepared by solving the problem. 5. Direct transfer is possible between a pressure cylinder (300) and a heated support cylinder (301). resulting from said first carrier piece (F) and a paper piece (P) being passed between A document according to any one of claims 2 to 4, characterized in that: 6. Direct transfer involves a pressure cylinder (302) with a continuous pressure track (303). ) and a heated support cylinder (301). (F) and from a small piece of paper (P) Documents listed in any one of Section 4. 7. Direct transfer is the first step of the die-cut process for continuous application onto a single sheet of paper. Claims 2 to 4, characterized in that they originate from the initial carrier piece (F). Documents listed in one of the following items. 8. said individual reflective elements (101) by direct transfer to the surface (10) of the document (D); The adaptation of is discontinuous and the intermediate space (1 Document according to claim 1, characterized in that 02) is free of any coating. 9. The discontinuous character of said pattern is characterized by a pressure series having discontinuous pressure tracks (305). A continuous line is passed between the cylinder (304) and the heated support cylinder (301). characterized by originating from an initial carrier piece (F) and a piece of paper with a continuous reflection band The document set forth in claim 8. 10. The discontinuous characteristic of the pattern is a die for discontinuous adaptation to a piece of paper. Claims characterized in that it originates from said first carrier piece (F) that has been struck. Documents listed in box 8. 11. Each individual element (101) has a high level of resistance to abrasion and solvents from claim 1 characterized in that it is covered with a protective varnish (204) that Documents listed in any one of Section 10. 12. It is noted that each individual element (101) forms a mirror capable of reflecting all visible wavelengths. The document set forth in any one of claims 1 to 11. 13. The individual reflective elements (101) are made of a fine metal layer and preferably aluminum. Claim 12, characterized in that it is formed by a fine layer of Ni. document. 14. a mirror formed by at least some of said individual reflective elements (101); completely unobstructed by geometrical elements that at least partially cover said mirror. The document according to claim 12 or 13, characterized in that it is flat or flat. . 15. a contour in which the individual reflective elements (101) of the reflective surface are in the shape of a quadrilateral; (C) Any one of claims 1 to 14 Documents listed. 16. Said contour (C) is in the shape of a rectangle, the edges (103) of which define said individual reflections. Claim 1, characterized in that it is parallel to the general direction (DG) of the element (101). Documents listed in Section 15. 17. The outline (C) is in the shape of a parallelogram, and its green color (103) The reflective element (101) is parallel to the general direction (DG) of the reflective element (101). Documents listed in Scope No. 15. 18. The other edge (104) of said parallelogram is located with respect to said general direction (DG). characterized in that it is inclined at a constant angle (a), said angle being preferably close to 45°. The document set forth in claim 17. 19. The width of the contour is small, which is considered to be perpendicular to the general direction (DG). Claims 15 to 18 characterized in that the diameter is at least 3 millimeters. Documents listed in any one of the paragraphs. 20. The length of the contour is considered to be parallel to the general direction (DG). Claim 15 characterized in that it is preferably between 4 and 10 mm. Documents listed in any one of paragraphs 1 to 19. 21. The general direction (DG) of said individual reflective elements (101) is on the short side of said document ( Claims 1 to 20, characterized in that the shape is in a rectangular shape parallel to 11). Documents listed in any one of the above. 22. a forgery in which said document is in the form of discontinuous reflective surfaces (100) on its two sides; a prevention mechanism, the two mechanisms preferably being identical individual reflective elements (101) Any one of claims 1 to 21, characterized in that Documents listed. 23. The credit or guarantee document set forth in any one of claims 1 to 22 A carrier strip consisting of a transferable reflective pattern provided, which can be used as a continuous carrier. an upper layer (200) of plastic material capable of hot melt adhesive or wax a fine metal layer (201) constituting the reflective pattern to be transferred; and a hot melt adhesive (203) layer that adheres the metal layer to the paper document surface. A small carrier piece characterized by having a multilayer structure. 24. A varnish layer (204) is attached to the hot melt adhesive or wax layer (202). ) and said fine metal layer (201), said varnish layer being particularly resistant to wear and solvents. Claim No. The carrier piece (F) according to item 23. 25. A varnish layer (205) covers the fine gold layer (201) and the adhesive layer (203). ), the varnished eyebrows ensure a reflective pattern, and the metal particles are provided between the reflective Claims characterized in that the pattern is prevented from penetrating into the paper of the document during transfer. The carrier piece (F) according to item 23 or 24.