CA2946940A1 - Security document impregnated with a de-opacifying agent and method for treating a document - Google Patents

Abstract

The invention relates, in particular, to a security document (1) having front (11) and back (10) faces and of which the body (C) at least partially consists of fibres, a security strip (2) being at least partially incorporated into said body (C), said body (C) being impregnated with a de-opacifying agent at least facing a part of said strip (2), characterised by the fact that said strip (2) is partially incorporated into said body (C), such that said strip emerges at a plurality of locations at the surface of said body (C) on said front face (11), thus forming windows (F), two consecutive windows (F) being separated by a bridge (P) corresponding to a region in which the strip (2) is buried in said body (C), and such that said de-opacifying agent also impregnates the body (C) in the areas (3) located to either side of the longitudinal sides of said strip (2), at least facing one region forming a bridge (P).

Description

SECURITY DOCUMENT IMPREGNATED WITH A DESOPACIFYING AGENT AND METHOD
PROCESSING A DOCUMENT
The present invention relates to a security document. She also relates to a method of processing a security document.
To guard against counterfeit documents security, such as banknotes, it has already been proposed to use means various security features, such as watermarks, fibers, boards, etc.

Other techniques consist in introducing into the paper the document of an elongated plastic element forming a "headband or wire of "security", which makes it even more difficult to manufacture product counterfeit.
It also makes it easy to authenticate the document by central banks when it has detectable means automatically (such as a substance with properties such as the electrical conductivity or magnetism), but also by a user "lambda", in other words "the man of the street" for characteristics visual called first level.
A security document of this type is represented schematically in Figures 1 to 4 attached.
More precisely, FIGS. 1 and 2 show the front faces and back of a security document which here consists of a banknote, while that Figures 3 and 4 show a view of the cross section of the ticket, respectively according to the planes AA 'and BB' shown in Figures 1 and 2.
So we are dealing here with a security document 1 which consists of a note. Of course, in other embodiments not shown, he could be a completely different security document, such as a page of passport.
This post has two large opposite sides recto 11 and back 10.
This ticket is provided with a security banner referenced 2. It extends transversely to the largest dimension of the note and joins the long longitudinal sides.
The headband is partially integrated in the body C of the banknote so that it emerges only in a few places on the surface of the body C at

2 level of the front face 11, thus forming "windows" F. These are marked in the form of black areas in Figure 1.
Two consecutive F windows are thus separated by a "bridge" P
that is to say to a region in which the strip 2 is completely buried in the body C. These bridges are marked in gray in Figure 1.
When we look at Figure 2, that is, the reverse side 10, we finds that the bandage is completely buried in the thickness of the body C, this which results in a barely visible band N extending transversely on the ticket.
Referring this time to Figure 3, which illustrates as simplification and without the elements represented being in just proportions, a cross section of the ticket of Figures 1 and 2 according to the plan A-A ' that is to say, facing a bridge P, we see that the safety strip 2 himself is trapped in the body C of the note 1, its lower face being in the same plane as a delimitation of this body in two layers 101 and 111.
These two solidarity layers are usually designated according to the Anglo-Saxon terminology "short train" for layer 101 and "main train"
for the layer 111. These two layers 101 and 111 are joined in the state wet during the formation phase of the body of the leaf which will eventually constitute the at the same time as the insertion of the banner 2. It can be seen here that the Short form 101 has a thinner thickness than the hand form.
Note that the upper area of the hand form 111 that integrates the safety strip is slightly protruding, due to a oversize localized generated by the strip 2 itself whose thickness is not totally compensated.
In a very similar way, a safety strip can be integrated into a single layer paper that is to say formed of a single layer of paper. The major disadvantage of this single layer paper is the covering the opposite side of the wire. For this, we will prefer a technique double-layer paper formation in the case of a yarn having flush windows.
According to the section of Figure 4, we see that the safety strip 2 is flush with the surface of the front face 11 of the document to form a window which corresponds to a zone slightly set back from the general plan in which is contained the front face.

3 The major disadvantage of this technique which consists in joining together the headband 2 to the body C is that wherever this headband is embedded in the body, he concealment of the marks and signs of safety which are affixed to the headband 2.
Thus, usually, nearly 50% of the surface of the band is concealed face-up side 11, while 100% of the surface of the headband is concealed at the back 10.
This greatly reduces the effectiveness of the affixing of marks safety or signs on the surface of the headband 2.
In the end, almost 75% of the surface of the safety strip is unused for first-level authentication purposes.
To solve this problem, a simple solution would be to increase the number of windows F and omit the addition of the short form 101 to level of the reverse side 10 of the note. But this would most likely be nature to weaken the entire document and to facilitate the withdrawal of the banner of accidentally, during normal use of the document.
It can also be envisaged that this withdrawal could be Fraudulent way for reuse on a counterfeit document.
Solutions consisting of creating pseudo-watermarks as in W02013 / 093848 or to make more visible security elements embedded in a paper as in the documents EP0773320 and FR2929965 exist and play on the deopacification of paper. Document W02013 / 093848 uses the differences in aspects brought locally by the deopacification vis-à-vis of the untreated areas to simulate a watermark. Document EP0773320 discloses the incorporation of a tape in the paper but the methods of obtaining are nevertheless complex to implement with conversion steps. Finally, the document FR2929965 treats a ribbon that can be made of paper locally deopacified integrated into another fibrous medium in order to improve their transvision properties.
The present invention aims at increasing the visibility of the headband integrated into the security document, without compromising performance mechanical assembly of the headband / security document as today, without multiplying the manufacturing steps and / or conversion impacting costs and expanding the possibilities of interaction between headband and impressions to raise the overall security level of the document.

4 Thus, according to a first aspect, it concerns a document front and back sides and whose body is at least partially made of fibers, a safety strip being at least partially integrated into said body, this body being impregnated with an agent deopacifying at least next to a portion of said strip, characterized by the fact that said headband is partially integrated into said body, so that this headband emerges in several places on the surface of said body at the level of said front face, thereby forming windows, two consecutive windows being separated by a bridge corresponding to a region in which the strip is buried in said body, and that said deopacifying agent permeates also the body in areas on either side of the longitudinal sides said band, at least facing a region forming a bridge.
According to other advantageous features of this document:
- said body is impregnated with said deopacifying agent with regard to the all of the longitudinal extent of said strip;
at least one of said front and back faces is impregnated;
said strip comprises at least one safety element in the bridge regions; and - the zones situated on either side of the longitudinal sides of the strip facing the bridge regions security impressions some of which are exactly in registration of said at least one security element in the bridge regions said strip.
Another aspect of the invention relates to a method of treatment a security document.
It is therefore a method of processing a security document with front and back sides and whose body is at least partially made of fibers, a safety strip being at least partially integrated in said body which comprises a step during which said impregnated body of a deopacifying agent at least opposite a portion of said band, characterized by the fact that said headband is configured so that it emerges in several locations on the surface of said body at said front face, in thus forming windows, two consecutive windows being separated by a bridge corresponding to a region in which the strip is buried in said body, and that one also permeates the body in the areas located on the and other longitudinal sides of said strip, at least in relation to a region forming bridge.
According to advantageous but non-limiting characteristics of this process :

At least one of said front and back faces is impregnated;
after impregnation, a freezing operation is carried out ultraviolet or hot air / ray drying agent infrared; and said opacifying agent is chosen from the group consisting of varnishes, silicone oils and waxes.
Other features and advantages of the present invention will appear on reading the detailed description of an embodiment of the invention.
This description will be made with reference to the accompanying drawings in which :
¨ as already stated, Figures 1 to 4 are relative diagrams of a state of the art close to the present invention;
¨ FIGS. 5 and 6 are respectively front views, faces front and back of a security document according to a first variant of the present invention;
¨ Figures 7 and 8 are views similar to Figures 5 and 6 preceding, corresponding to another embodiment of the invention;
¨ Figures 9 and 10 are also views of the front and back faces of a security document that are an alternative embodiment of the invention;
¨ Figures 11 and 12 show respectively front and sectional right another type of ticket in whose body a headband is completely integrated;
¨ lastly, FIG. 13 is a front view of the ticket of FIG. 11, after implementation of the method according to the invention.
Throughout this application, including the "deopacifying agent" means a product or a mixture of products to make information more legible through a layer of fibrous materials, this agent having a high wetting power and therefore a very low surface tension. This is the case for crosslinkable compositions under

6 UV radiation, in which the monomers are selected with voltages very low surface area.
It also has the characteristic of not evaporating more drying, that is to say that the effect remains even after drying of the volatile fraction.
As non-limiting examples of such a deopacifying agent, ultraviolet drying coatings, silicone oils and waxes, and more generally products containing monomers with high power wetting. Other means of drying such as hot air and rays infrared can be envisaged according to the chemistry of the agents envisaged.
Also by way of example, suitable varnishes completely in the context of the present invention are, on the one hand, the one referenced 669 440D by Sun Chemical and, on the other hand, reference commercially under the name Purintomark Flexo 410. It will also be possible mention the Purintomark 300 offset composition.
Thus, in accordance with the invention, the agent is applied deopacifier on the security document so that it permeates at least the regions directly above the P bridges, so that this agent increases way the legibility of the marks or signs worn by the banner to this level. This readability is at least reinforced from the front face 11 according to a observation in reflection of this face.
More specifically, and as illustrated in the embodiment of FIG. 5, the deopacifying agent is applied to the front face 11 of the document 1 in the form of a broad band that covers the entire band of security 2, but also zones 3 which are located on both sides of his longitudinal sides of the headband.
When the security strip 2 is integrated in document 1, this band generally has a "latitude" in its positioning.
Indeed, during the formation of the strip of leaves that will lead the security document, the safety strip 2 is inserted according to a lateral oscillation, for example of the order of 16 millimeters.
This oscillation is called "stroll". This prevents the headband is always found in the same place in the ticket and that the overthings evoked previously create excessive deformations in the damaging paper in the following process, especially during the WO 2015/16602

7 conversion into leaves, the constitution of batches of leaves and their passage in sheet-fed printing presses.
Although this method is widely used, the fact of not to set a stride when inserting the wire remains possible, but this involved then special provisions at the stationery to convert the tape into leaves as well as at the printing press to use the paper. This is also a example of synergy or technical effect of the present invention which does not create no deformation of the paper contrary to a method of incorporation into Windows.
In this case, the deopacifying agent band can to be applied either to the stationery or to the printing press.
It is applied throughout the longitudinal extent of the headband, including included on windows F, which it does not disturb the transparency. A
times this impregnation carried out, the documents are sent to a drying, especially using ultraviolet rays, to freeze the agent deopacifying in the desired region.
In the embodiment of FIG.
also the deopacifying agent in the form of a broad band covering also zones 3, but this since the reverse side. This embodiment is particularly preferred since we have seen that the reverse side communicates with a thin layer of fibrous material, so that the amount of agent deopacifier to use can be reduced and, in fact, the visibility of the headband is increased from this face.
Of course, according to an embodiment not shown here, can impregnate both the front face 11 and the reverse side 10 of the document.
In the embodiment of FIG. 7, the deopacifying agent is applied locally by printing, in particular by screen printing or flexography, only in the areas of the P-bridges, which makes it possible heard to control and limit the amount of agent to use.
Moreover, we choose here to overflow the deopacifying agent on both sides of the strip to form zones 3 whose geometry can to be advantageously chosen to integrate better in the design of the document, thus contributing to the enhancement of the harmony of the whole, and improving its security.

8 Thus, in the case presented, zones 3 opposite P bridges have a regular pentagon shape. Of course, other forms are possible, for example semicircle shapes.
Note also that at the ends of the banner, which end with a P bridge, it is also possible to deopacify them for allow increased visibility of the banner.
This goes against the habits of the profession in which he it is recommended not to provide the opposite edges of the window strip, for reasons of keeping the entire banner, and in particular the fact that the latter can be separated more easily from the paper at the edge chopped off.
In the embodiment of FIG. 8, the method of same way as in Figure 7 but by operating this time at the level of the face verso 10 of the document.
In the variant of FIG. 9, the safety strip 2 has been inserted in a way marked in the body C of the document.
Indeed, in ordinary fashion, the standard insertion of the headband in body C does not provide that the marks or the safety signs of the headband are registered in the longitudinal direction in relation to the Windows.
However, it is possible by synchronizing the insertion of the banner 2 with the scrolling of the paper tape, to position the security element in perfect location with windows. It means that by taking two points fixed for example a point corresponding to a mark or a security sign on the banner and another fixed point such as a watermark, these two points find always in the same relative positions with respect to each other.
This is particularly advantageous in the context of this invention.
Indeed, in this case, if a mark or a security sign E at the surface of the front face 11 of the strip 2 is in register with respect to windows F, then one can take advantage advantageously of this specificity, in affixing another mark or sign E 'in the vicinity, on front face 11, reciprocally on the reverse side 10. All these areas provided with marks or signs of security will have been previously treated with the agent désopacifiant.
Thus, by obtaining a perfect identification of all brands and security signs affixed to the faceplate 11, to the strip 2 and to the face

9 back 10, it is possible to make patterns, images or texts that himself complete.
Applied in Figure 9, it is possible to read the triptych "FCO" on the first and third windows from the top, the letter "F" being affixed on the front face 11, the letter "C" on the safety strip 2 and the letter "0", although printed on the reverse side 10, is visible in inspection in reflection from the front side thanks to the position of the agent deopacific chemistry in line with the windows F and their surroundings.
Reciprocally and considering Figure 10, it is possible to read the triptych "FCO" on the second and the fourth windows starting from the top, with a letter "F" made on the reverse side 10, the letter "C" is found on the safety strip 2 and the letter "0", although it was made on the face-face 11, is visible in inspection in reflection from the face back thanks to the position of the deopacifying agent in line with the windows F and their entourage.
Taking into account Figure 11, we are dealing here with a view of transmission from face 1 of document 1. According to this view, the bandeau 2 is totally incorporated in the body C so that no part of the bandeau 2 does not emerge on the surface. This is a "drowned type incorporation".
The headband is covered with an opaque coating, except in recessed areas together forming the initials "FCOF".
When viewing the note in transmission from the front face 11, the opaque contours 0 of the yarn appear, while the FCOF texts appear non-opaque, and stand out clearly from the headband said.
Figure 12 is a sectional view along the plane AA 'of Figure 11.
According to this figure, there is clearly the strip 2 integrated body C of the document consisting of a single and single layer 111. The opaque contours 0 are devoid of material on certain parts thus forming a pattern T
visible by transmission in the form of the acronym FCOF.
The strip 2 is completely "drowned" in the body C of the document so that it is not visible in reflection from one or the other faces

10 and 11.
FIG. 13 is a view in reflection from the front face 11 of the According to this view, the strip 2 incorporated in the body C of the ticket is visible within windows (F) artificially created by agent deposition désopacifiant.
In other words, the deopacifying agent is applied to the headband 2 and in the areas on both sides 5 longitudinal, only in certain distinct and separate regions two to two by a surface devoid of deopacifying agent.
This gives the impression that flush F windows exist, while they are artificially created by the deopacifying agent.
The advantage of this embodiment is to make it possible to create zones of visibility of the 10 headband 2 in reflection from one or other of the faces of the bill.
In an embodiment not shown, the strip of safety and / or the deopacifying agent can incorporate agents authenticatable during automatic machine reading. For example, particles magnetic devices forming a continuous strip, blocks or code in form bits. It can also be conductive particles, fluorescent, phosphorescent, readable under infrared light or with a signal specific detectable with a dedicated device.

Claims (9)

11 1. Security document (1) with front (11) and back (10) faces and whose body (C) is at least partially made of fibers, a safety band (2) being at least partially integrated in said body (C), this body (C) being impregnated with a deopacifying agent at least look at a portion of said headband (2), characterized in that said strip (2) is partially integrated into said body (C), so that this headband emerges in several places at the surface of said body (C) at said front face (11), thereby forming windows (F), two consecutive windows (F) being separated by a bridge (P) corresponding to a region in which the strip (2) is buried in said body (C), and that said deopacifying agent also permeates the body (C) in the zones (3) located on either side of the sides longitudinal said strip (2), at least opposite a bridge region (P). 2. Document according to claim 1, characterized in that said body (VS) is impregnated with said deopacifying agent with regard to the entire extent longitudinal of said strip (2). 3. Document according to one of the preceding claims, characterized by the made at least one of said front (11) and back (10) faces is impregnated. 4. Document according to one of claims 1 to 3, characterized in that said strip (2) comprises at least one security element (E) in the bridge regions (P). 5. Document according to claims 1 and 4 taken in combination, characterized in that the zones (3) located on either side of the sides longitudinal said strip (2) located opposite the bridge regions (P) comprise security impressions (E ') some of which are exactly in registration said at least one security element (E) in the bridge regions (P) said strip (2). 6. A method of processing a security document (1) having faces front (11) and back (10) and whose body (C) is at least partially made of fibers, a safety strip (2) being at least partially integrated in said body (C) which comprises a step in which one impregnates said body (C) with a deopacifying agent at least opposite a part of said strip (2), characterized in that said strip (2) is configured so that it emerges in several places on the surface of said body (C) at said face-up (11), thereby forming windows (F), two windows (F) are separated by a bridge (P) corresponding to a region in which which the band (2) is buried in said body (C), and which is impregnated also the body (C) in the areas on either side of the sides longitudinal members of said strip (2), at least opposite a region forming bridge (P). 7. Method according to claim 6, characterized by the fact that one impregnates at minus one of said front (11) and back (10) faces. 8. Method according to one of claims 6 or 7, characterized by the fact after impregnation, an operation is performed to freeze said agent by drying ultraviolet rays or hot air / infrared rays. 9. Method according to one of claims 6 to 8, characterized in that said opacifying agent is selected from the group consisting of varnishes, oils silicone and waxes.