SI9400249A - Security paper with sign in colour - Google Patents

Description

(57) The present invention relates to a security mark in the color of banknotes, securities and other high value documents with protection against the possibility of counterfeiting, imitation or misuse, and to a process for the industrial production of such security. The color-coded security paper of this invention contains color-coded security features that are clearly visible when viewed against light and provide originality for banknotes or documents printed on such paper. Given that the general public is the main victim of counterfeit banknotes or documents, using this paper to produce it provides complete security and gives the average person the opportunity to recognize and verify their originality immediately.

YU-1/549

Dragisa Andric

Belgrade, FRY

Borislav Stojanovich

Belgrade, FRY

COLOR PAPER SAFETY PAPER

The present invention relates to security marking in color for banknotes, securities and other important documents with protection against possible counterfeiting, imitation and processing. The invention also relates to a process for the industrial production of such security, as well as to its use for the manufacture of banknotes and other securities.

According to the present invention, security-colored paper incorporates color-coded security features that are clearly visible when viewed through the paper towards the light source and reliably confirm the originality of the banknotes, or other securities or important documents printed on thin paper.

Considering that the general public is the main victim of counterfeiting banknotes, other securities or important documents, the use of such paper to produce them is complete protection, and gives the expert in the field control and immediate and reliable recognition of originality.

Use of this paper makes it impossible to reproduce (counterfeit) or partially process banknotes and other securities and documents (passports, shares, certificates, passports, identity cards, etc.) for material or any other benefit. When it comes to banknotes, counterfeiting is a major misuse, and other securities and documents are usually exposed to counterfeiting as well as processing.

The main victims of counterfeiting and processing are ordinary people who cannot reliably distinguish the original from the counterfeit, so there is a need for a paper that allows the average person to easily identify immediately whether it is a banknote or other security or important document original but fake.

The need for such paper has increased in particular since the emergence of color laser copiers that allow anyone who owns the original to make an unlimited number of fakes. Such copies are very similar to the original, and the difference can only be detected by expert analysis. In addition to color photocopying, banknotes, securities or important documents can be easily falsified with electronic color scanners as well as modern offset machines. This is due to the rapid technological development in the production of color reproduction apparatus and machines, the development of new processes and products in the field of security paper production.

So the security for banknotes and other securities and important documents must be designed to completely and reliably protect against any risk, counterfeiting by means of color laser copiers, electronic scanners and color printers, as well as modern offset printing machines. .

The types of paper used today in the world for the production of banknotes and other securities and important documents are made on round-screen paper machines that are slower than Fourdrinier machines.

On the other hand, circular sieve machines allow the security elements such as:

- a half-tone watermark

- security thread

- colored silk fibers

- confetti in colors

fluorescent components and

- chemical additives at customer's request, etc.

Watermark embedded in security paper using a round sieve technique to give lighter and darker tones due to the different thickness of the paper when viewed in the light source direction. Depending on the quality of the paper, the watermark may be considered as a deficiency in the paper because the physical properties of the paper at the watermark location are not uniform. Another disadvantage of embedded watermark paper is that the surface of the watermarked paper does not print precisely to make the watermark visible. For this reason, the watermark is difficult to see with old and greasy notes. The third drawback of a watermark security paper is that the watermark can be easily falsified by printing on opaque white, or by copying it beautifully on a laser copier in colors that reproduces all the shades of the watermark accurately and thus displays false shadows watermark with light and dark tones. The fourth drawback of a watermark security paper is that the watermarking skill in paper is very old and technologically known, and that papers with very beautiful and quality watermarks have been produced centuries ago. Previously, the element of paper security depended solely on the craftsmanship of making the mold for embedding the watermark. Only a very small number of people who were under state control mastered this skill.

Today, in a time of great technical and technological development in all fields, it is possible to produce high quality fake and the skill of watermark making depends not only on handicraft skills, but also the watermark in paper is no longer a reliable protection against counterfeiting, as it was before fifty and over.

A much younger security element than the watermark is a safety thread that is embedded in the weight of the paper and fixed in a position that is always parallel to the direction of operation of the paper machine. The security thread can be in the weight of the paper along its entire length, or only partially, but partly on its surface. Once this thread was silk, today synthetic foil is used to make it. Synthetic foil security thread may be minted, fluorescently colored, Morse-stamped, or mi-cloth seated, which may include a country, central bank, face value, etc.

The main drawback of a security paper with a built-in thread is that the paper is much thicker at the point where the thread is located or has weak mechanical properties, which causes malfunctioning of banknotes (printing and cutting), and also reduces its circulation time. Another disadvantage is that the appearance of the security thread in the paper is very easy to mimic. In this way, users of banknotes and other securities and important documents are not sufficiently secured but can be blinded by false threads. All of the security features so far embedded in security paper are not enough to prevent falsification, because modern computer technology, laser-based printers and color cameras make it easy for individuals to make fakes that are difficult to identify for average people.

In view of the aforementioned disadvantages of the already known security papers, it is an object of the present invention to solve the problem of preventing the counterfeiting of banknotes and other securities and important documents by means of modern color laser copiers, electronic scanners, color printers and graphic offset machines, by producing and the use of color-coded security paper for printing them.

If banknotes and other securities and important documents are printed on the paper of the present invention, they may be properly identified and distinguished from each counterfeit. Anyone can easily and clearly see the color mark when looking at a note or other product made of such paper in the direction of light. This color sign guarantees the originality of the banknote or paper. However, it is possible to install other security signs, at the request of the customer, which definitely and completely avoids the possibility of counterfeiting.

Thus, the first object of the present invention is directed to a security paper with a color trademark consisting of a synthetic substrate to which a color symbol is incorporated and, where appropriate, other security and information elements, the synthetic substrate being applied between the bases of thin paper with high opacity.

A second object of the present invention is directed to a process for the manufacture of color-coded security paper. The basic elements of this paper production are: thin roll paper, synthetic substrate and adhesives.

Finally, the third object of the present invention is directed to banknotes and other securities and important documents made from a security paper with the color marking of the invention.

DETAILED DESCRIPTION OF THE INVENTION

Basic, thin paper in rolls is made using standard paper-making machines, with so-called paper machines, generally paper is made from aqueous suspension, a mixture of fiber and filler, or pigment. The following are used in the production of thin paper: fibers of textile raw materials, as well as cotton, flax, hemp, etc., or a mixture of all these fibers with pulp of tree origin. Titanium dioxide as well as ΤΙΤΑΝΟΧ RA 50 and a number of other commercially available fillers may be used as the filler or pigment. The job of the filler is to increase the opacity of thin paper. To obtain high-quality thin paper, it is necessary to use a moisture-proofing agent, such as some of the melaminformaldehyde resins, as well as Perez resin 607 n Perez resin 613 (commercially available brands), which are commercially available.

Such thin paper can be produced on the machines used today for making paper (Fourdrinier's machine).

The weight (grammar) of thin paper for use in the method of producing paper of the present invention is from 25 g / m to 45 g / m; the opacity of the thin paper ranges from 75% to 85%, and the thickness ranges from 0.038 mm to 0.050 mm.

In order for the thin paper used for the production of the security paper with the color symbol to be specific or not to be purchased in the shop, it must be made at the specific request of the customer, or silk colored fibers added to the weight of the paper, pigment for fine toning, additives for chemical reactions, etc.

Synthetic material substrate used in this process for the manufacture of security paper with the

Vi color, is a transparent film in roll made of polyester, 1prop 1 or cellophane. The following characteristics are advantageous for the substrate.

- thickness 0.008 mm to 0.016 mm

- weight 11.2 g / m ² to 22.4 g / m ²

- dimensional stability: -1.5% (150 * C; 30 min)

- treatment: coronation, rotogravure printing, vacuum metallization and perforation.

There are a greater number of manufacturers of such substrates, the most famous being: DuPont, ICI, Kodak, 3M, etc.

The adhesive used in the process of making a security paper with a colored mark is used for the two-sided laminating of the treated substrate with thin paper specially designed for this process. The adhesive is supplied by special manufacturers who give complete instructions for its use in bonding paper and a given synthetic substrate.

The adhesive consumption ranges from 1.5 g / m to 3.0 g / m.

The process of making a security paper with a color sign according to the present invention consists of the following steps:

- graphic design for color sign;

- electronic color separation;

- engraving of the rotogravure cylinder;

- multicolor rotogravure;

- vacuum metallization;

- perforation;

- lamina wound; and

- cutting, counting and quality control of poles;

It should be added that during the manufacturing process it is not necessary to use all the phases, eg vacuum metallization and perforation are optional, but it should be noted that they provide additional protection elements.

DETAILED DESCRIPTION OF THE INDIVIDUAL PHASES

Graphic Design: A new security element to protect against the risk of counterfeiting, the color sign is created by the artist-designer from the motifs he wants to have on the final consumer of the security paper. The color sign can be made from any color image without restrictions on the choice of colors of the motif itself, or the accuracy of the details that we want to show in the security paper. The location of the mark in color on the security paper may be strictly accurate or may be continuously distributed across the cli poly paper. Color marking can also be incorporated into those parts of the sheet of paper that the creators (banknotes, securities or important documents) envisage as offset and intaglio printed on both sides). Regardless of the location of the mark in color, this mark will always be clearly visible when looking at the banknote against the light.

The artist-designer, on this same security paper, in addition to the color mark, can use for his creations other security elements such as: microtext (used on security threads), white portrait for watermark effect on non-printed surface of the sheet, fluorescent and magnetic markings and opaque or perforated clovers.

Electronic Color Separation: The selected motif for making color marks is processed when mounted on paper using a laser analyzer or scanner. The laser analyzer reads the image in color and breaks it down into a series of microscopic element elements called pixels, which has four basic colors: blue, yellow, red and black.

The scanner detects the intensity of the individual colors contained in each of the pixels. all information received from the scanner is electronically processed and stored in memory. In materializing the image, due to the creation of a tool for reproducing the color sign, the apparatus uses another laser beam that keeps the memory, namely:

a) direct engraving of a rotary engraving cylinder, or

b) Exposure of photo-sensitive material in an indirect process for chemical engraving of a rotogravure cylinder.

Cylinder Engraving: An image reproduction cylinder is created for each of the four base colors to represent the color mark. Color synthesis is obtained by means of a cylinder in transparent color rotogravure. Special cylinders are engraved for the fluorescent color. However, if the cylinder is engraved electronically or chemically, the most appropriate engraving depth is from 0.003 mm to 0.032 mm.

The raster density of the engraved points should be 80 lines / cm to 100 lines / cm.

Rotogravure: In the process of reproducing an image for a mark in color by means of engraved cylinders, a synthesis is made of the four basic colors. Multicolor motif, microtest, fluorescence and magnetic marking of the print using the rotogravure technique on the substrate or synthetic foil that has previously been coroned. The working speed of rotogravure machines in use today is 200-270 m / min.

The colors used for printing the motif are made of transparent pigments, which are very durable and the opaque colors are used for printing micro-texts1 but.

Fluorescent and magnetic markings are printed with colors made from suitable pigments.

Synthetic substrate film, or film, is a carrier of a synthetic image for marking in color. The film is also successfully used as a carrier of microtext, white portraits for the conventional watermark effect, metallized details in combination with multi-colored rotogravure, as well as fluorescent and magnetic markings. When the perforation is desired, the synthetic substrate is perforated.

Metallization: The synthetic substrate can be completely or partially machined by vacuum meta-isolation to obtain opaque surfaces, or only the details selected at 1 and 1 ec.

Multicolored rotogravure designs can be printed on metallized substrate surfaces.

Perforation: In order to obtain a higher degree of safety, a synthetic substrate, which plays the role of a carrier of the color sign and the meta 1ized surfaces, can be machined on a text-perforating machine. This processing is performed using needles 0.8 to 1.0 mm in diameter, arranged to form text, numbers or a given character.

By pointing the perforation of the meta 1ized or printed substrate, the designers can design the outlines of text, numbers, or the desired character very clearly when viewed against light.

Laminating: The incorporation of a colored mark into the middle part of the security paper is obtained by bonding, ozioma 1, the amination of the thin-film image carrier with an adhesive. Synthetic substrate, or foil, previously treated with rotogravure, laminates on both sides of the lining, perforation, and thus becomes the carrier of the color image of the chosen motif, microtext, fluorescent or magnetic markings, or laminates and perforated dates. with thin paper.

The laminating process is performed on a machine with a tunnel for drying the adhesive. One-component and two-component adhesives or adhesives may be used for laminating. We have a large number of manufacturers on the market with a wide selection of suitable adhesives. Each manufacturer of the adhesive prescribes the conditions and manner of its use. Polyurethane-based adhesives are most common, although any adhesive that is compact with thin paper and substrate can be used.

At this stage of production, we obtain a security paper with a color mark and other built-in counterfeit elements that can be seen when viewed through the paper against light. The resulting paper is in rolls (rolls) and must be further processed into t-search boxes.

Cutting: A security colored paper made using this procedure is in a scroll, so it can be cut into sheets at the request of the customer.

The cutting, counting and quality control of this sheet of paper is the same as that used for watermark paper. Colored paper obtained in the manner described above contains the desired color motif embedded in the middle layer of the paper. The color fastness to which the color motif is made of paper is very high because the color motif uses pigments similar to those used for printing security paper, securities and other important documents.

Such colored sheets of color-coded paper are successfully used for single-sided or duplex printing in multi-color offset and integlio techniques.

If banknotes, securities or other high value documents are printed on security paper with the color mark made according to the invention, they may visually display the following special features:

- when illuminated only from the front, only motifs printed on the front of the paper are clearly visible

- when viewed against the light, the motif of a mark in paper color is more clearly seen than the motif printed on the surface; as the light against which the banknote is viewed increases, the surface printing becomes visible, while the color sign becomes more pronounced. The color of the print from the surface of the paper has no effect on the color of the character embedded in the paper.

The advantage of a security paper with the color mark of the present invention over the other known types of security paper is that for the first time a security mark is achieved in colors and not only in white tones, as is the case with the watermark: the paper is of the same thickness all over the surface of the sheet and therefore manual or unsupervised fabrication is prevented; microtext or any other text can be applied to the paper in any direction; individual surfaces can be made completely opaque by metallization; perforation in the substrate allows us to produce perforated details that are even more pronounced when viewed through paper in the direction of light; fluorescent and magnetic indications on the substrate are more durable and longer lasting than in the securities known so far; the production speed on the paper machine is higher than the production rate on the paper screen machine; the paper is more resistant to tearing and withstands a much larger number of double folds than previously known security papers.

The total time it takes to complete all the steps in the process of making a color-coded security paper, from design to polishing, is three to four times shorter than the time required to produce a watermark and print thread. This is a logical consequence of the use of modern and harsher technological procedures, compared to the slow way of making watermarked paper on a circular screen paper machine.

The following are four examples illustrating a color-coded security paper and process for its manufacture according to the invention.

Example 1

As a motif for color marking, we used a portrait of a historical figure representing a line drawing, and in addition to the portrait a co1our-spectrum test (color spectrum). The color mark is reproduced in a rotogravure technique on a 0.012 mm polyester film, which can be purchased under the YUBORLEN trademark. Before we started printing in colors (four colors), we coated the polyester film on both sides. We used 32 g / m * cotton cotton thin paper to produce the ultimate security colored paper. First, we laminated one side of the substrate, with a built-in color sign, and then the other side. In both cases, a polyurethane-based adhesive was used.

The properties of the color-coded security paper produced in this way are given in Table 1.

Example 2

As a motif for color marking, we used a color icon made on YIJBORLEN 0.012 mm polyester film, integrated into four colors in rotogravure technique.

Hemp fiber paper, weighing 30 g / m2, was used for thin paper. As in the previous example, we laminated both sides using a polyurethane based adhesive.

The properties of the color-coded security paper produced in this way are given in Table 1.

Example 3

We used portraits of historical figures and icons as a motif of color. This motif was applied five-color rotogravure on VUBORLEN polyester film thickness

0,012 mm. For the thin base paper, we used paper made from cotton fibers and wood pulp weighing 35 2 g / m. As in the previous example, we laminated both sides using a polyurethane based adhesive.

The properties of the color-coded security paper produced in this way are given in Table 1.

Example 4

Compared to the previous examples, the same thin base paper is used here, but with two different continua1 does not have a motif that is in color: an ornament made with a white opaque color to see the fake watermark. Both motifs were applied in retro-engraving technique 9 to a 0.012 mm polyester film with a weight of 16.9 g / m, which is available on the free market under the Mylar brand. As in the previous cases, double-sided lamination was repeated using the Navacote ADH 222 adhesive manufactured by ICI UK and using basic thin paper, weighing 36 g / m, consisting of 75% cotton fiber and 25% wood pulp.

The properties of the color-coded security paper produced in this way are given in Table 1.

For the sake of comparison, the first three columns of this table give the same parameters for a watermark security paper, manufactured by Portals UK, Arjomari

France and Louisenthal from Germany. All paper characteristics are laboratory tested at 22.5'C to 23 ° C and 50-51% relative humidity.

TABLE 1

PORTALS ARJOMARI LOUISENTHAI. EXAMPLE

(GB) (F) (D) 1 2 3 4 Weight (g / m ^) 8 3 80 82 84 8 5 88 9 3 Thickness (1 O ' ³ mm) 108 100 98 95 96 104 1 1 1 G ladkost (sec) 9.3 12.6 10.5 10.8 11.3 11.7 12.03 by Back Togos t (10mm 15 °) 9 3 100 98.7 70 71 76 74 Before the market tension 463 425 432 415 420 435 495

by Mullen (KPa)

Pret rzhna

force (daN) 12.6 11,87 11,90 12.40 12,47 12,75 13,43 Opacity t 88.19 89,50 85.31 89.85 91.70 88.60 93,23 Average more more more more a pin and 1 o 1097 1570 1465 as as as as two n and h 2000 2000 2000 2000 preg and bov

(Conditions: 22.5 ° to 23'C; 50-51% moisture)

As can be seen from Table 1 above, the security paper with the color marking of the present invention has similar properties to the security paper of other manufacturers. The only difference is that the security paper in question has the potential to have multiple double folds, and this is one of the most important features that list the quality of banknote paper and other security documents.

It will be understood by one of ordinary skill in the art that the scope of the present invention also includes its various variants and embodiments, both in the use of starting and auxiliary materials, as well as in changing the sequence of stages of production or in the use of manufactured security paper with a color mark and / or other security features containing a synthetic substrate.

FOR

Dragisa Andric Belgrade, FRY and n

Borislav Stojanovic Belgrade, FRY

Claims (9)

A color-coded security paper, characterized in that the transparent color image is made on a synthetic substrate coated with thin paper on both sides, with a high opacity. Security colored paper according to claim 1, characterized in that the synthetic substrate, which is already coated on both sides with thin paper, with high opacity, is partially minted or perforated. Color coded security paper according to claims 1 and 2, characterized in that the synthetic substrate, prior to the two-sided coating with thin paper, with high opacity, produces micro-texts1 o with fluorescent, phosphorescent or magnetic sign. 4. Color-coded security paper according to claims 1, 2 and 3, characterized in that the synthetic substrate made of polyester is 1-propylene or cellophane and has a weight of from 11.0 to 22.5 g / m2, with a thickness of 0.008 mm to 0.016 mm, and that both are wounded coronally and the basic thin paper is made of textile fibers such as cotton, flax or hemp, or a mixture thereof with pulp of perennials, weighing 25 to 45 g / m2, thickness 0.038 mm to 0.050 mm and with 75 to 85% opacity. 5. A process for producing a security paper with a color mark, characterized in that the graphic design in color, by means of a multi-color rotogravure, refers to a synthetic substrate as a transparent color image. the substrate thus prepared is laminated with basic thin paper using compatible adhesives. Method according to claim 5, characterized in that the synthetic substrate is partially treated by laminating or perforating vacuum meth before laminating. Method according to Claims 5 and 6, characterized in that, prior to lamination, it involves applying micro-text, magnetic, fluorescent, phosphorescent and white markings with translucent colors using rotogravure only at a specific location, but not in a single wound. . Method according to claims 5, 6 and 7, characterized in that the materials described in claim 4 are used during the process. 9. Color-coded security paper according to claims 1, 2, 3 and 4, characterized in that it is used for the production of banknotes and / or other high value documents such as shares, checks, bonds, certificates, passports, personal cards and the like. FOR Dragisa Andric Belgrade, FRY Borislav Stojanovich