KR101943028B1 - Security strip and document provided therewith - Google Patents

Abstract

The present invention relates to a security strip (1) partially embedded in a security document (2) structure made of at least one fiber, said strip being present on the surface of the document in the form of a window (F) And a transparent or translucent support material (5) covered on one surface, the so-called upper face, by a reflection visible coating, said band being at least partially free of said coating, Forming zones (4, 4 ') spaced apart by first and second line-forming regions (4, 4') covered by said coating, characterized in that each of said lines-forming regions Characterized in that the silver line-forming regions have two different optical renderings and / or patterns which can be seen by reflection, and wherein the silver line-forming regions each comprise a negative pattern (M) Of the referenced patterns And at least one pair has the same interval along the regions.

Description

SECURITY STRIP AND DOCUMENT PROVIDED THEREWITH

The present invention relates to a security strip designed to be incorporated into at least a part of the structure of a security document, at least partially including fibers.

The invention also relates to secure documents provided with a security strip.

In order to prevent counterfeiting of security documents such as banknotes, the use of various security measures such as watermarks, textiles, spot marks, etc. has been proposed previously.

Another technique involves introducing a stretch member made of a synthetic material that forms a << security thread >> on a security document to further increase the difficulty of manufacturing counterfeit goods, In other words, the man in the street >> has been proposed to make it easier to check the authenticity of this document.

The first silver line introduced on paper was "embedded", which means that silver lines are captured in the paper mass by merging the silver lines in banknote manufacturing. Therefore, they are designed so that they can not be seen under the reflected light by the transparency but can be seen under the transmitted light.

Since then, paper manufacturers have developed several different kinds of hidden lines. Examples of these are colored magnetic silver halides containing machine-identifiable information, such as intermittent digital coding, fluorescence, partial demetallization, micro-printing, holography, and the like.

According to a more recent technique, it has been proposed to incorporate a security hidden line so that it can be seen only in a windows form of a storm by reflection. This explains the use of the title << window >> which means that this line is also embedded in the paper mass and flush with the surface to the same height as any surface of the banknote.

Thus, windows can be seen by reflection, while the << immersed >> part is visible only by transmission. The term &quot; reflection &quot; is a phenomenon in which incident light is reflected from the surface of the support. Patent WO 2005/069231 discloses introducing two parallel lines on two different tracks. As a result, the number and size of hidden lines are increased. However, there are many limitations to using these techniques. First of all, for manufacturing reasons, the minimum distance between the two hidden lines must be observed. Also, it is difficult to distinguish the designs of silver lines from each other. In addition, the process of simultaneously and synchronously locating two hidden lines in a secure paper is tedious and complex. Finally, the presence of two lines in the support indicates a substantial deformation of the support.

It is an object of the present invention to provide the aforementioned disadvantage which makes it particularly complicated to imitate it with a fraudulent technique due to the special optical effect by providing a band including two areas which cause illusion that seems to contain two different hidden lines It is for catching.

The invention thus relates to a security strip designed to be incorporated at least in part into a part of a secure document structure comprising fibers which appears on the surface of the document in the form of a window of humidification, The so-called &quot; upper face &quot; includes a transparent or translucent support material covered by a coating visible by reflection, said band also comprising a longitudinal strip which is at least partially free of said coating, Said longitudinal strips separating first and second areas forming a hidden line covered by said coating, wherein each of said hidden line forming areas comprises two different rendering and / or optical effects visible by reflection And includes negative designs that track each other, i.e., at least a pair of these tracking designs are repeated along the regions If it is always characterized by having the same interval (pitch spacing).

Due to the combination of these features, the observers of the observers of the security document incorporating this strip cause an illusion of dealing with two different hues, since they combine two renderings and / or different optical effects each to be. This phenomenon is linked to the tracking design contained within it. In fact, the messages contained in these designs and / or designs are relatively invariably located relative to each other and may &quot; respond &quot; through axis or center symmetry, or even translations, Is completed.

According to yet another advantageous and non-limiting feature of the present invention:

The longitudinal strips have straight, parallel edges;

The longitudinal strips have non-linear and / or non-parallel edges;

The coating comprises at least two layers selected from the following: a magnetic or non-magnetic optically variable ink layer, an ink layer with iridescent effect, a holographic layer, a metal layer and an opaque ink layer;

The band also includes a light absorbing layer and a transparent layer without optical effect between the support material and the metal layer, the thickness of the transparent layer being different in each of the regions forming the silver line;

- at least one layer obtained by vacuum deposition and / or at least one black printing extends on the lower face of the support material so as to be at least partially visible by transmission;

The band is partially coated with an opaque layer or a metal layer, and the coverage rate of the band is preferably at most 50% of its surface.

Another aspect of the invention relates to security documents such as banknotes, passports, and the like.

This document incorporates a band according to one of the above-described features, which is characterized by the appearance of at least one of its visible surfaces in the form of a humid window.

Preferably, the lower surface of the strip is covered with an ink layer of the same color as the material constituting the document.

Further features and advantages of the present invention will be apparent from the following description of preferred embodiments of the present invention. The following description is provided with reference to the accompanying drawings.

Figure 1 shows a partial top view of a secure document, in this case banknotes, in which a band is partially included, but the design contained in the band is not shown;
Figures 2 to 4 are cross-sectional views of three embodiments of the strip (for simplicity, only those elements that cover the &quot; upper face &quot; of the support material of the strip are shown in these figures) ;
Figure 5 is a plan view corresponding to Figure 1, in accordance with another embodiment of the banknote.
Figs. 6 to 8 are plan views of three other modifications of the band, the latter of which shows window-shaped bands.
9 to 12 are views showing still another four concrete examples of the band according to the present invention.

Throughout the specification of the present invention, the expression "regions having different optical effects" means regions that can be visually distinguished from each other when viewed visually and through reflection. These are, for example, those areas which have different light diffraction effects or which have a color change between hues of two colors as a function of the propensity of the support. In embodiments where the optical effects are the same, the renderings will differ in that they only show different color changes between the two hidden lines.

The band 1 according to the invention is partly incorporated in the security document 2, which represents the banknote in the accompanying Figure 1. In a variation not shown, another example of this is a security document such as a passport.

This security document may be based on paper based on cotton paper, or with or without chemical pulp, and based on cellulose or other materials containing fibers of different classes and gram weights. A hybrid support in which the polymer (s) and paper are combined is also available.

As is well known in the art, the strip 1 is partially incorporated in the document 2, while it is shown on its surface in the form of a window F of humidification.

This strip 1 is a longitudinal median strip 3 delimited from each other and delimits two regions forming the lines 4 and 4 'with straight, parallel edges. ). This causes the observer to perceive that the << hidden lines >> are separated and mutually independent.

As will be described in greater detail below, each of the regions 4 and 4 'is covered by a coating, each of which has optical renderings EO1 and EO2 distributed in different regions. The effect of EO1, for example, is given by the coating of magenta color changing to green while the effect of EO2 is given by the green color coating which turns blue.

The designs provided by this band are not described herein, as described above.

As shown in FIG. 2 and as a first embodiment, the strip according to the invention comprises a transparent or translucent support material 5, such as a plastic film. The latter is preferably made of a polyester having a thickness of, for example, about 10 [mu] m. The " external "surface 51 (i.e., the center side of the document, i.e., the side facing the paper) of the lower portion of the band is coated (e.g., about 2 탆 thick) . If this ink layer is not applied, the applied layers on the top surface are at least partially visible. In other words, this ink has a masking function.

Finally, an external adhesive layer having a thickness of about 4 to 5 [mu] m is applied to the entire surface 51.

This is designed to improve the adhesion of the strip to the paper. It is clear that these two layers are not shown in Fig.

On the opposite side (window side) of the strip 1, the opaque ink layer 7, which is preferably black, is fused by a known printing technique (preferably a rotogravure).

In order to form a design M called a so-called "design in negative ", a reserve 70 in this printed item can be made.

Throughout the present invention, the term &quot; design &quot; can be any design or character, whether it is a letter or a number. The term &quot; negative &quot; means that it is defined by a contour or region of different contrast (in this case, the contour or area is higher). In other words, this area or this outline is visually inverse vis-à-vis the subject.

It is preferred that the center band is generally free of ink so that the two different regions (4) and (4 ') are defined.

또는 SICPASTAR

를 이용한 인쇄(프린팅)에 의해 행해진다. 영역(4)와 (4')에 광학 효과를 달리하는 잉크들을 융착시키는 것이 바람직하다. 띠(1)의 투명 부분(즉, 불투명한 잉크 및/또는 금속 융착물이 없는 부분)은 불투명 영역에 수직인 띠의 부분과 대조적으로, 색상 변화에 있어서 아무런 광학 효과를 나타내지 않을 것이다.An optically variable layer is applied to the regions 4 and 4 '. For example, OVI &lt; RTI ID = 0.0 &gt;

Or SICPASTAR

(Printing). It is preferable to fuse inks having different optical effects to the regions 4 and 4 '. The transparent portion of the strip 1 (i.e., the portion without opaque ink and / or metal fusing) will exhibit no optical effect on the color change, in contrast to the portion of the strip that is perpendicular to the opaque region.

3, a fine layer 7 of a metal, such as aluminum or copper (causing a mirror effect), is fused under vacuum under any known welding technique and then partially fused The same effect can be achieved by de-metallisation and creating a negative design. Then, the transparent layer 8 having no special optical effect is fused by adjusting the thickness, like the layer 9 'made of an absorbing material of Inconel type (registered trademark). The color of the optical effect product depends on the thickness of this layer (8).

Then, for example, a chromium-type metal layer 9 is vacuum-fused such that the metal layer 9 is perpendicular to the metal region 7. Then, As the observation angle is changed, a color change effect occurs.

Next, an adhesive having a thickness of about 2 占 퐉 is fused to the opposite surface (window side) of the silver halide. Depending on the required level of resistance, a polyester film having a thickness of about 10 [mu] m is laminated. The physico-chemical resistance can be appropriately imparted to the strip and its bonding layers. The primary (if necessary) and final layers of the adhesive having a thickness of about 4 to 5 占 퐉 are fused to ensure accurate and proper attachment between the strip and the paper fibers.

In a preferred embodiment not shown in the present invention, the center strip 3, which is not coated and separates the strips into two different areas, is a secondary strip-shaped strip selected from fluorescence, phosphorescence, visible infrared ink, Level security ink. This printing can be easily seen through the center strip 3.

In another preferred embodiment shown in FIG. 4, the central strip 3, which is free of optically variable material, is pre-coated on the opaque or metal -type layer 7 and is partially &quot; hollowed &quot; There is a material, so that a negative design M can be formed. The expression &quot; partially hollowed &quot; means that the coverage of the band is 50% or less.

These designs are difficult to see by reflection, but they can be easily seen by transparency. These are arranged so that they are accurately registered together with (4) and (4 ') which are optically variable regions. These designs can take many forms, such as blocks, and can be arranged periodically and repeatedly.

In another preferred embodiment, these arrangements can produce sequences of the type "barcode" which are automatically readable by the machine.

The opaque black ink may also have a conductivity characteristic with respect to current. In this case, the printed design must be continuous in the longitudinal direction of the strip at one or the other of the regions 4 and 4 'so as to ensure electrical conductivity. This electrical conductivity can be read and sensed by the sorting machine.

In yet another preferred embodiment, the designs formed on the first and second different regions 4 and 4 'are designed so that both of their portions form an overall register in the exact register It is finished. It is to be understood that this third embodiment is particularly difficult to manufacture if it is intended to be made by the joining of two different lines.

Specific examples of Figs. 5 to 8 will be described below. It is clear that there is no limit to the size of the character being engraved. However, considering the width of the band, it is preferable that the size is 1 to 6 mm.

5 is a view showing a security strip 1 having a width of 4 mm, which is incorporated in the window of the banknote 2. Fig. It is coated with optically variable magenta / green ink visible in region 4 and optically variable green / blue ink visible in region 4 '. This band has a materialless band 3 of width 1 mm, which separates the band 1 into two parallel disjoined areas 4 and 4 '. The zones without material are also placed in each of the two tracking zones 4 and 4 ', so that they form exactly the opposite of each other.

However, if they are exactly the opposite, it is feasible, but is offset in the longitudinal direction by the same constant value throughout the longitudinal direction of the regions forming the hidden line.

Fig. 6 shows a 4 mm wide security band 1 coated by both inks of optically variable green / magenta ink and optically variable magenta / green ink. The strip 1 has a material-free strip 3 of width 1 mm, which separates the strip 1 into two parallel disassembled regions 4 and 4 '. Negative designs M tracking each other are arranged on one side and the other side of the regions 4 and 4 '. In the center band 3, the opaque ink forms a negative design M '. These designs are arranged in a sequence of repetitive blocks. This sequence can be seen briefly by reflection on the surface area of the paper and is easily seen by transmission.

FIG. 7 shows a cross-sectional view of a security system including two holographic areas 4 and 4 ', having diffraction effects from blue to red (through all other colors of the visible spectrum) and red to blue diffraction effects 1 shows the band 1; Fig. The strip 1 has a strip 30 of uncoated width 1 mm which separates the parallel regions 4 and 4 '. On one side and the other side of the regions 4 and 4' Negative designs that track each other are arranged.

In the center strip 3, opaque ink forms a negative design M '. These designs are arranged in a sequence of repetitive blocks. This sequence can be seen briefly by reflection on the surface area of the paper and is easily seen by transmission.

Figure 8 is a diagram illustrating another embodiment of a band partially incorporated within a secure document. This relates to the region 4 having regions with hue change and the region 4 'having diffraction effect as in the above embodiments. Designs printed in black (and thus not optically variable) together form a kind of bar code extending along the center strip 3. [ As described above, the present invention visually shows a "double thread" effect by using a single band. This visual effect can be proved to be real by the public. The unique areas created by the absence of central material include color and / or metallization change effects. The combination of these effects can be seen on the paper surface within the window. Designs made on one area and on another can be located in a complete register. They may also form sequences of the "barcode" type to provide a second level of confidentiality.

The band of FIG. 9 has two zones 4 and 4 'of different widths and a center band 3 with straight, parallel edges offset relative to the middle longitudinal axis of the band. As can clearly be seen from this figure, there is a design M and a negative design M ', which combine to form a trombone shaped diagram. The designs of the strips 4 and 4 'are all naturally registered. The band 4 changes its color from green to purple, while the band 4 'is metallic purple.

Fig. 10 relates to two regions 4 and 4 'separated by a band 3, wherein the edges in the longitudinal direction are not straight lines, but as &quot; corrugated & It is curved, with convex and concave alternating. The band 4 changes from red to green while the band 4 'changes from blue to green.

Fig. 11 shows a specific example in which the strips 4 and 4 'each have a sawtooth edge, and the center strip 3 also has the same sawtooth edge. The strip 4 has a metallic appearance of copper type, while the strip 4 'has an aluminum type metallic appearance.

Fig. 12 shows two bands 4 and 4 'which are very different in shape and appearance. The bottom of each band has an aluminum-type metallic appearance and its density is different for each band. The strip 4, which is wider than the strip 4 ', comprises a plurality of multicolor designs. The edges of the band 3 are formed by a continuous circle portion and are repeatedly long rounded negative sections in this band, partially registered at one of these portions of the circle.

Claims (9)

A security strip (1) designed to be incorporated into a part of the structure of a secure document (2) comprising at least partly of fibers, which strip appears on the surface of the document in the form of a window (F) The so-called &quot; upper face &quot; 50, which is a surface, comprises a transparent or translucent support material 5 covered by a coating R visible by reflection, (3) at least partly free of said coating (R) which is spaced apart from said first and second regions (4, 4 ') which are covered by a coating (R) and form a silver line,
Each of the line-forming regions 4, 4 'has two different rendering and / or optical effects (EO1, EO2) visible by reflection,
Characterized in that by including negative designs (M) each tracking each other, at least one pair of these tracking designs (M) are always the same spacing when repeated along the areas ). The belt according to claim 1, wherein said longitudinal strip (3) has straight, parallel edges. The band according to claim 1, characterized in that the longitudinal strip (3) has non-linear and / or non-parallel edges. The coating according to claim 1, wherein the coating (R) comprises at least two layers (6, 9) selected from a magnetic or non-optical optically variable ink layer, an ink layer with iridescent effect, a holographic layer, &Lt; / RTI &gt; 3. The device of claim 2, wherein the coating comprises a metal layer (9), the band comprising a transparent layer (8) without optical effect and a light absorbing layer between the support material (5) and the metal layer (9) The thickness of the transparent layer (8) is different in the regions (4, 4 ') forming the silver line. A method according to any one of claims 1 to 3, characterized in that the at least one layer obtained by vacuum bonding and / or at least one black printing is at least partially visible by transmission, Is provided on the lower surface (51) of the base (5). 6. A strip according to any one of claims 1 to 5, wherein said strip (3) is opaque or partially coated with a metal layer. A security document (2) characterized by the incorporation of a strip (1) as claimed in any one of claims 1 to 5, characterized in that the strip is provided with at least one of its visible surfaces A security document (2) in which the surface is merged into a secure document so that it appears in the form of a window of the storm (F). The security document (2) according to claim 8, wherein the lower surface (51) of the strip (1) is covered with an ink layer of the same color as the color of the material comprising the document.

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