KR20170005444A - Security document impregnated with a de-opacifying agent and method for treating a document - Google Patents

Abstract

The present invention relates in particular to a security system comprising a front face 11 and a rear face 10 and whose body C is at least partly made of fibers and in which the security strips 2 are at least partially integrated into the body C, Characterized in that the body (C) is impregnated with a de-opaque agent at least in part on the strip (2), characterized in that the strip (2) The strips are exposed at a plurality of locations on the surface of the body C at the front face 11 and the two successive windows F are arranged such that the strips 2 are positioned in the body C, And the de-opaqueizing agent is separated from the body (C) in the region (3) located on both right and left sides in the longitudinal direction of the strip (2) In contrast to the bridge-forming region P, Relates to a security document (1) is characterized.

Description

TECHNICAL FIELD [0001] The present invention relates to a security document and a document processing method,

The present invention relates to secure documents. The present invention also relates to a method for processing secure documents.

Various security measures such as watermarks, fibers, planchettes, and the like have been previously proposed to prevent counterfeiting of security documents such as banknotes (including banknotes). Other technologies include introducing extended elements made of synthetic material into security papers that form a "security strip or thread" that makes it more difficult to manufacture the article.

This means that the central bank can easily determine the authenticity of the document when provided with automatic sensing means (e. G., Electrically conductive or magnetic) or "plain" It makes it easy to identify authenticity.

This type of security document is schematically presented in the attached FIGS. 1-4.

More specifically, Figures 1 and 2 are front and back views of a security document that is a bank note, and Figures 3 and 4 show cross-sectional views of the banknote along planes A-A 'and B-B' shown in Figures 1 and 2, respectively.

This relates to security documents in banknotes. Of course, in other embodiments not shown, other secure documents such as passport papers may be targeted at any number of times.

This banknote has two opposing sides, front 11 and rear 10.

A security strip of reference number 2 is provided in this banknote. It extends in a long longitudinal direction across the longest length of the banknote.

The strip is partially incorporated into the banknote body C to form a "window " F by appearing only in some portion of the surface of the body C at the front face 11. These are indicated by black lines in Fig.

Thus, two consecutive windows F are separated by a bridge P which is an area in which the strip 2 is completely embedded in the " bridge "P, These bridges are shown in gray in Fig.

Observing the rear side 10 of FIG. 2, the strip N is completely buried within the thickness of the body C, so that the band N extending across the banknote is almost invisible.

Referring now to FIG. 3, which shows a cross-section of the banknote along the plane A-A 'in FIGS. 1 and 2, ie across the bridge P (not to scale as the components are simplified) , It can be seen that the security strip 2 is confined within the body C of the banknote 1 and its bottom is located in the same plane as the boundary delimitation of this body in the two layers 101 and 111. [

These two connected layers are often referred to as a " short former "in the case of layer 101 and a" main former " These two layers 101 and 111 are joined together in a wet state during the formation of the body of the sheet, which ultimately constitutes a bank note upon insertion of the strip 2. Here, the short former 101 is thinner than the main former.

The upper area of the main formers 111 incorporating the security strips is slightly bulged due to the local increase in thickness due to the strip 2 itself and its thickness is not completely offset.

In a substantially similar manner, the security strip may be incorporated into "single layer" paper formed solely of one layer of paper. A major drawback of this single layer paper is the covering of the opposite side of the thread. For this purpose, a two-layer paper forming technique is preferred for a thread having flush windows.

4, it can be seen that the security strip 2 has the same height as the surface of the front surface 11 of the document to form a window corresponding to a region slightly below the general plane including the front surface.

The major drawback of this technique, which consists in combining the strip 2 with the body C, is that every time the strip is embedded in the body, the security marks and features attached on the strip 2 are hidden.

Thus, generally, almost 50% of the strip surface is hidden in the front face 11, while 100% of the strip surface is hidden in the rear face 10.

This greatly reduces the efficiency achieved by attaching a security mark or feature on the surface of the strip 2.

Finally, almost 75% of the security strip surface is not used for authenticity verification of the first line.

One simple solution to this problem is to skip the addition of the short former 101 in the back 10 of the banknote and increase the number of window F's. However, this method is likely to degrade the strength of the entire document, which is likely to be accidentally removed during normal use of the document.

Such removal may also occur for fraudulent purposes using counterfeit documents.

There is a solution to generate false-watermark as in WO2013 / 093848, or to increase the visibility of security elements embedded in paper as in EP0773320 and FR2929965, and also to use paper de-opacification. Document WO2013 / 093848 uses a different shape locally provided by de-opacification for the raw area to simulate a watermark. Document EP0773320 discloses the incorporation of strips in paper, but its fabrication steps are too complex to carry out with the conversion step. Finally, document FR2929965 relates to ribbons that can be made of de-opaque paper incorporated into another fiber carrier to improve "see-through" properties.

The present invention may be used to reduce the mechanical performance of a strip / secure document assembly such as is known in the art, or to reduce the manufacturing cost of the strip and / or the print to improve the overall security level of the document, To extend the visibility of the integrated strip into the secure document.

Accordingly, in accordance with a first aspect, the present invention provides a security document having a front and a back surface, wherein the body of the secure document is at least partially comprised of fibers and security strips that are partially and partially integrated into the body, Opaque agent is impregnated on the opposite side (opposite) of at least a portion of the body, wherein the strip is partially integrated into the body such that the strip has a plurality of openings And two consecutive windows are spaced apart by a bridge corresponding to an area in which the strip is embedded in the body, the de-opacifying agent being present on either side of the strip in the longitudinal direction (Opposite to) the bridge-forming region in the region where the bridge-forming region is located The.

According to another advantage of the invention:

The body is impregnated with the de-opacifying agent contrary to the entire length scale of the stream;

At least one of the front and back surfaces is impregnated;

The strip comprising at least one security element in bridge-forming areas; And

An area located on either side of the strip on the opposite side of the bridge-forming area comprises security prints, some of which are precisely aligned with the at least one security element in the bridge-forming area of the strip will be.

Another aspect of the invention relates to a method of processing secure documents.

The method comprises a secure document having a front side and a back side, i.e. the body of the document is at least partially made of fibers, and the security strip is at least partly integrated into the body, the method comprising the steps of: Wherein the strip is exposed at a plurality of locations on the surface of the body at the front surface to form a window and two successive windows are formed in the body such that the strip is filled with a de- And the body is characterized in that it contains a de-opacifying agent in a region located on either side of the longitudinal direction of the strip, at least on the opposite side of the bridge-forming region.

According to a non-limiting advantageous characteristic of this method:

- impregnated on at least one of said front and rear surfaces;

After impregnation, the de-opacifying agent is cured by ultraviolet drying or hot air drying / infrared drying means; And

The opacifying agent is selected from the group consisting of varnishes, silicone oils and waxes.

Other features and advantages of the invention will be apparent from the following detailed description and examples.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail with reference to the accompanying drawings:
Figures 1 to 4 are diagrams according to the state of the art close to the present invention;
5 and 6 are front and rear views respectively of a security document according to a first modification of the present invention;
FIGS. 7 and 8 are views showing similar embodiments of FIGS. 5 and 6 corresponding to another embodiment of the present invention; FIG.
9 and 10 are views showing the front and rear surfaces of a security document, which is a modification of the present invention;
Figures 11 and 12 are respectively a front view and a cross-sectional view of another type of banknote where the strip is fully integrated into its body;
Finally, Figure 13 is a view of the front of the banknote of Figure 11 after the method according to the present invention has been implemented.

Throughout this specification, including the claims, the term "de-opacifying agent" refers to a product or mixture of products that can increase the readability of information fragments through a layer of fibrous material, Has a high wetting force and therefore a very low surface tension. In such a case, a composition which can be crosslinked under UV irradiation, in which a monomer with a very low surface tension is selected.

The present invention also has the feature that it does not evaporate after drying, meaning that the effect persists even after the volatile fraction has dried.

Non-limiting examples of such de-opacifiers are UV-drying varnishes, silicone oils and waxes, and more generally products containing monomers with high wetting power. Other drying means, such as hot air drying and infrared drying, are also considered when considering the chemistry of such formulations.

Also for example, a perfectly suitable varnish in context of the present invention may be one sold under the name of 669 440D by Sun Chemical Co., on the one hand and Purintomark Flexo 410 on the other. The Purintomark 300 offset is also available.

Thus, in accordance with the present invention, a de-opaqueizing agent is applied to the security document so that at least at this level the impression of the marker or features carried by the strip at this level legibility is significantly increased. This readability increases at least from the front surface 11 as a result of the reflection of the front surface 11.

More specifically, and referring to Fig. 5 as a specific example, the de-opaqueizing agent is applied on the front surface 11 of the document 1, not only the whole of the security strip 2, but also a region 3 located on both right and left sides in the longitudinal direction of the strip Is also applied in the form of a wide strip covering it.

If security strip 2 is incorporated into document 1, then this strip generally has a "latitude " in its positioning.

In fact, while the web of the sheet to create the secure document is being formed, the security strip 2 is inserted into the lateral oscillation at about 16 millimeters.

This vibration is referred to as a "wander ". This avoids the above-mentioned increased thickness, which causes excessively large deformation in the paper, such that the strip is not always in the same position within the banknote, which increases the remainder of the steps, especially the sheet- Which is particularly harmful in his passing through the injection printing press.

Although this method is widely used, the fact that the waders are not fixed at the time of thread insertion may remain, including special considerations for converting the web to a sheet, especially for use in paper mills or printing houses. This is also an example of increasing the technical effect of the present invention without deforming the paper, unlike the method of integrating windows.

In this case, the de-opacifying agent band may be applied in paper mill or printing house. This is applied through the entire longitudinal direction of the strip including the window F phase, and the transparency of the window is not compromised. Once this impregnation is performed, the document is passed through a drying station, in particular a drying station using ultraviolet radiation, to cure the de-opaque agent in the desired area.

In the exemplary embodiment of FIG. 6, the de-opacifying agent is applied in the form of a wide band covering region 3. This embodiment is particularly preferred because it can reduce the use of the de-opaqueizing agent by connecting it with a layer of fiber material whose backside is not so thick, in fact, the visibility of the strip increases from this aspect.

Of course, in the embodiments presented herein, it is possible to impregnate the front side 11 and back side 10 of the document.

7, the de-opacifying agent is applied only locally on the opposite side of the bridge P, in particular by a printing process by serigraphy (serigraphy) or iron-plate printing, It is also possible to control and limit the amount of the gas.

Also, in this case, over-opacifying agent is applied to both sides of the strip in excess to form region 3, which can be selected to best integrate into the document design, thereby improving the overall harmony, Can be improved.

Thus, in the illustrated embodiment, the region 3 opposite to the bridge P has a regular pentagon shape. Of course, other shapes such as semicircles are also possible.

At both ends of the strip where the bridge P terminates, it is also possible to de-opaque it to increase the visibility of the strip.

This is disadvantageous in practice because it is not recommended to provide an edge on the opposite side of the window strip, especially in view of the behavior of the entire strip, since the latter can be easily separated from the paper at the cut edge.

The specific example of FIG. 8 proceeds in the same manner as FIG. 7, but proceeds from the rear side 10 of the document at this time.

In the variant of Fig. 9, security strip 2 has been inserted in the manner indicated in the body C of the document.

Indeed, when inserting a strip into the body C as standard, the marks or security features of the strip are not longitudinally aligned with respect to the window.

However, it is possible to perfectly align the position of the security element with the window by synchronizing the insertion of the strip 2 with the paper web operation (synchronizing). This means that two fixed points, such as a point on the strip or one point corresponding to a security feature, and another fixed point, such as a watermark, are always in the same position relative to each other.

This is particularly advantageous in the context of the present invention.

Indeed, in this case, if the mark on the front face 11 of the strip 2 or the security feature E is aligned with the window F, by attaching a mark or feature E 'to the front face 11 and vice versa, Can be used to make. All of these areas provided with marks or security features are primarily treated as de-opacifiers.

Thus, it is possible to create complementary patterns, images or texts, as it is possible to perfectly align all security marks and features attached on the front and back sides 11 and 10 of the strip 2.

9, a three-width "FCO" can be read in the first and third windows from the top, where the letter "F" is on the front 11, the letter "C" is on the security strip 2, The "O" is printed on the rear side 10 but is observable by inspection by reflection from the front due to the position of the chemical de-opacifying agent vertically aligned with the window F and its boundary.

Conversely, referring to FIG. 10, three width "FCO" can be read in the second and fourth windows from the top, where the letter "F" is located at the back 10, the letter "C" is located at the security strip 2, O "is made on the front side 11 but is observable by inspection by reflection from the rear side from the front side due to the position of the window F and the de-opaque material vertically aligned with its boundary line.

11 is a perspective view from the front face 11 of the document 1. Fig. In this figure, the strip 2 is fully integrated into the body C so that no part of the strip 2 is exposed on the surface. This is "embedded-type integration".

The strip is covered with an opaque coating, with the exception of the hollow area, with the formation of the letter "FCOF ".

When observing the banknote by transmission from the front side 11, the opaque outline O of the thread appears, while the letter "FCOF" appears not opaque and is apparently detached from the strip itself.

12 is a cross-sectional view along the plane AA 'of FIG. In this figure, the strip 2 integrated into the body C of a single simple layer 111 document is clearly distinguished. The opaque contour O forms a pattern T that is visible by transmission in the form of the letter "FCOF " since there is no material in a particular area.

Strip 2 is not visible either by reflection from either one or the other of faces 10 and 11 "fully" within the body C of the document.

13 is a reflection view from the front face 11 of the document 1. Fig. In this figure, the strip 2 integrated into the body C of the banknote can be seen in a window F made artificially by deposition of a de-opaque agent.

In other words, the de-opacifying agent is applied to the strip 2 and the regions located on both sides in the longitudinal direction thereof, and is applied only to the specific separated regions separated by pairs by the surface without de-opacifying agent.

This gives the impression that they are artificially created by the de-opaque agent while there is a flush window F there. The advantage of this embodiment is that it can create a visible region of strip 2 by reflection from either side or the other side of the banknote.

In one embodiment not shown, the security strip and / or the de-opacifier may comprise a material that can be recognized as being authentic when read by an automated instrument. These may be, for example, magnetic particles forming a cord in the form of a continuous band, block, or bit. They may also be conductive, fluorescent, phosphorescent particles detected by infrared radiation or may contain specific signals detectable by dedicated devices.

Claims (9)

A security document (1) having a front surface (11) and a back surface (10), said body (C) being at least partially made of fibers, said security strip (2) being at least partially integrated into said body Wherein the body (C) is impregnated with at least a de-opaque agent against the strip (2)
The strip 2 is partly integrated into the body C so that it is exposed at a plurality of locations on the surface of the body C at the front face 11 and two successive windows (F) is spaced apart by a bridge (P) corresponding to an area in which the strip (2) is embedded in the body (C), and the de-opaqueizing agent is applied to both sides of the strip (P) is also impregnated, at least in the body (C) in the region (3) in which it is located. The article of claim 1, wherein the body (C) is impregnated with the de-opaque agent in opposition to the entire longitudinal direction of the strip (2). Characterized in that it is impregnated in at least one of the front face (11) and the back face (10) according to any one of the preceding claims. A document according to any one of claims 1 to 3, characterized in that the strip (2) comprises at least one security element (E) in the bridge-forming area (P). In the combination of claims 1 and 4, areas 3 located on both sides of the strip 2 in the longitudinal direction, which are located opposite to the bridge-forming area P, form a secure print E ' Characterized in that some of these are precisely aligned with at least one of the security elements (E) in the bridge-forming areas (P) of the strip (2). A method for processing a security document (1) having a front side (11) and a back side (10) and whose body (C) is at least partially made of fibers, at least partially incorporating a security strip As a method, the method comprises impregnating the body (C) with a de-opaque agent at least in opposition to a part of the strip (2)
The strips 2 are arranged to be exposed at a plurality of locations on the surface of the body C of the front face 11 to form a window F and two successive windows F, Are spaced apart from each other by a bridge P corresponding to an area in which the strip 2 is embedded in the body C and the body C is also spaced at least in the region located on both right and left sides of the longitudinal direction of the strip 2, - forming region (P). 7. A method according to claim 6, wherein at least one of the front surface (11) and the back surface (10) is impregnated. The method according to claim 6 or 7, wherein after the impregnation, the formulation is cured by ultraviolet irradiation or by hot air drying / infrared drying. 9. A method according to any one of claims 6 to 8, wherein the opacifying agent is selected from the group consisting of a varnish, a silicone oil and a wax.

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