KR20140069105A - Security strip and document provided therewith - Google Patents

Abstract

The present invention relates to a confidential strip (1) partially embedded in a confidential document (2) structure made of at least one fiber, said strip appearing 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, a so-called upper face, by a reflection visible coating, said strip being at least partially free of said coating, Forming regions (4, 4 ') spaced apart by first and second line-forming regions (4, 4') covered by said coating, characterized in that each of said silver- Characterized in that the line-forming regions have two different optical renderings and / or patterns which can be seen by reflection, and wherein the line-forming regions each comprise a negative pattern (M) At least a pair of the reference pattern is characterized by having the same interval as sluggish in the region.

Description

SECURITY STRIP AND DOCUMENT PROVIDED THEREWITH < RTI ID = 0.0 >

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

The present invention also relates to a secret document to which a secret strip is provided.

In order to prevent counterfeiting of secret documents such as banknotes, the use of various secret means 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 secret document paper to further increase the difficulty of manufacturing counterfeit products, and the use of << lambda >> users, 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 implies that silver lines are captured in paper mass by merging the silver lines when manufacturing banknotes. 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 declination lines that contain 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 merge secret hidden lines so that only reflections can be seen in the form of a window of the house. 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 the two hidden lines in a confidential 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 its special optical effect by providing a strip containing two areas which cause illusions to appear to contain two different hidden lines It is for catching.

Thus, the present invention relates to a secret strip designed to be incorporated at least in part into a part of a confidential document structure comprising fibers, which strip 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, and the strip also includes a vertical strip that is at least partially free of the coating Wherein the vertical strips are spaced apart from first and second areas forming a hidden line covered by the coating, wherein each of the hidden line forming areas comprises two different render and / or optical effects And includes negative designs that track each other, i.e., at least one pair of these tracking designs If repeated as the station it is always characterized by having the same interval (pitch spacing).

Due to the combination of these features, the person observing the confidential document with the strip is caused to seem to be dealing with two different hidden lines, 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 strip has straight, parallel edges;

The longitudinal strip has 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 strip comprises a transparent layer between the support material and the metal layer without any optical effect, the thickness of the transparent layer in each region forming the silver line being different from that of the light absorbing layer;

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

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

The document incorporates strips according to one of the above-described features, which strips are characterized by a window in the form of a humid, appearing on the surface of at least one of the visible surfaces thereof.

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

1 shows a partial top view of a secret document, in this case a banknote, in which the strip is partially included, but the design contained in the strip is not shown;
Figures 2 to 4 are cross-sectional views of three embodiments of the strip (for the sake of 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. 6-8 are plan views of three other variants of the strip, the latter of which shows a strip in the form of a window.
9 to 12 are views showing still another four embodiments of the strip according to the present invention.

Throughout the specification of the present invention, the expression "regions having different optical effects" means regions that can be distinguished from one another 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 strip 1 according to the invention is partly incorporated in a secret document 2 representing a banknote in the accompanying Fig. 1. In a variation not shown, another example of this is a secret document such as a passport.

This secret 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 comprises a longitudinal median strip 3 delimited from each other and delimits two regions forming lines of silver 4 and 4 'with straight, parallel edges. ). This causes the observer to perceive that the << hidden lines >> are 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 strip are not described herein, as described above.

As shown in FIG. 2 and as a first embodiment, the strip according to the present 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 bottom of the strip is coated (e.g., about 2 microns 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 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 in this case higher defined by contours or regions of different contrasts. In other words, this area or this outline is visually inverse to the subject.

The central strip is preferably substantially ink free so that (4) and (4 ') are defined in two different areas.

또는 SICPASTAR

를 이용한 인쇄(프린팅)에 의해 행해진다. 영역(4)와 (4')에 광학 효과를 달리하는 잉크들을 융착시키는 것이 바람직하다. 스트립(1)의 투명 부분(즉, 불투명한 잉크 및/또는 금속 융착물이 없는 부분)은 불투명 영역에 수직인 스트립의 부분과 대조적으로, 색상 변화에 있어서 아무런 광학 효과를 나타내지 않을 것이다.An optically variable layer is applied to 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 free of opaque ink and / or metal fusing) will exhibit no optical effect on the color change, in contrast to the portion of the strip 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 binding layers. (If necessary) and the last layer of the adhesive having a thickness of about 4 to 5 [mu] m so that an accurate and proper attachment is made between the strip and the paper fibers.

In a preferred embodiment not shown in the present invention, the central strip 3, which is uncoated and separates the strips into two different regions, is a secondary strip-shaped strip selected from fluorescent, phosphorescent, visible infrared inks, Level secret ink. This printing is easily visible through the central 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 then partly &quot; hollowed & &Gt; material to form a negative design M. The expression &quot; partially hollowed &quot; means that the coverage of the strip 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 in one or the other strip of 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 strip, it is preferable that the size is 1 to 6 mm.

Fig. 5 is a diagram showing a secret strip 1 having a width of 4 mm, merged into 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 strip has a material-free strip 3 of width 1 mm, which separates the strip 1 into two parallel disjoined areas 4 and 4 '. The regions without material are also placed in each of the two strips 4 and 4 'tracking each other so that they form a design exactly opposite to 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, secret strip 1 coated by both inks of optically variable green / magenta ink and optically variable magenta / green ink. The strip 1 has a strip 3 of material 1 mm in width, 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 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.

FIG. 7 shows a block diagram of a spectrometer which includes two holographic areas 4 and 4 ', which have a diffraction effect from blue to red (diffracting effect from 0 to 0 through all other hues of the visible light spectrum and diffraction effect from red to blue) The strip 1 has a strip 30 of uncoated width 1 mm which separates the parallel regions 4 and 4 'from the strip 1. The strips 1 and 4' Negative designs that track each other are disposed on one side and the other side of the optical fiber 4 '.

In the center strip 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. 8 is a diagram showing another embodiment of a strip partially incorporated in a confidential paper. Fig. This relates to the region 4 having regions with hue change and the region 4 'having diffraction effect as in the above embodiments. The designs printed in black (and thus not optically variable) together form a kind of bar code extending along the central strip 3. As described above, the present invention visually exhibits a "double thread" effect by using a single strip. 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 strip of FIG. 9 has two zones 4 and 4 'of different widths and a central strip 3 with straight, parallel edges offset relative to the middle longitudinal axis of the strip. 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 of course all registered. The strip 4 changes its color from green to violet while the strip 4 'is metallic purple.

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

Figure 11 shows an embodiment in which the strips 4 and 4 'each have a serrated edge, and the center strip 3 also has the same serrated 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 strips 4 and 4 'which are very different in shape and appearance. The bottom of each strip has an aluminum-type metallic appearance and its density is different for each strip. The strip 4, which is wider than the strip 4 ', comprises a plurality of multicolor designs. The edges of the strip 3 are formed by a continuous circle portion and are repeated long rounded sections in this strip, partially registered at one of these portions of the circle.

Claims (9)

A secret strip (1) designed to be incorporated into a part of the structure of a secret document (2) comprising at least partly of fibers, the strip appearing on the surface of the document in the form of a window of warmth (F) The so-called &quot; upper face &quot;, surface 50, comprises a transparent or semi-transparent support material 5 covered by a coating R visible by reflection, (3) that is spaced apart from the first and second regions (4, 4 ') forming a silver line covered by the coating (R) and which at least partially does not comprise the coating Each having two different rendering and / or optical effects (EO1, EO2) that can be seen by reflection, each having negative designs M tracking each other, I.e., at least one pair of these tracking designs M, The secret strip (1) a case where repeated as to always characterized by having the same spacing. The strip according to claim 1, characterized in that said vertical strip (3) has straight, parallel edges. The strip 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 method of claim 2, wherein the coating comprises a metal layer (9), the strip comprising a transparent layer (8) without optical effect and a light absorbing layer between the support material (5) and the metal layer (9) Wherein the transparent layer (8) has a different thickness at each of said 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 strip (5). The strip according to any one of the preceding claims, wherein the strip (3) is partially opaque or coated with a metal layer, the strip coverage being preferably not more than 50% of its surface. A secret document (2) such as a bank note, wherein the strip (1) according to any one of claims 1 to 5 is contained within a bank note, wherein at least one of its visible surfaces (50, 51) Wherein said strips are merged into a surface in the form of a window (F) of regular humidity (2). 7. The secret document (2) according to claim 6, 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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