FR2917418A1 - Treatment composition, useful for supports such as papers, boxes, films and complexes to make authenticated, non-reproducible by photocopies and non-scannable, comprises binder and vehicle - Google Patents

Abstract

Treatment composition (I) for supports such as papers, boxes, films and complexes to make authenticated, non-reproducible by photocopies and non-scannable, comprises at least one binder and a vehicle, where the composition is characterized by the presence of at least one bottom element, which is distributed homogeneously in (I), where the element is soluble in (I) or finely dispersed so as to form a united visual effect in daylight or under special lighting and at least one category of particles randomly distributed during the deposition of (I) to a substrate. Treatment composition (I) for supports such as papers, boxes, films and complexes to make authenticated, non-reproducible by photocopies and non-scannable, comprises at least one binder and a vehicle, where the composition is characterized by the presence of: at least one bottom element, which is distributed homogeneously to make (I) as authenticated, non-reproducible by photocopies and non-scannable, where the element is soluble in (I) or finely dispersed so as to form a united visual effect in daylight or under special lighting, and has average size of less than 30 mu m when in a dispersion; and at least one category of particles randomly distributed during the deposition of (I) to a substrate size of 30-500 mu m to make an effect of authenticated, non-reproducible by photocopying and non-scannable and visually directly perceptible on the bottom, daylight or under a special lighting, where either the bottom element or the category of particles are visible in daylight without equipment to confirm the presence of (I) on a support.

Description

The present invention relates to a media treatment composition for

  make them authenticatable, non-reproducible by photocopies and not scannable.

  The areas concerned are security papers, the protection of documents, trademarks and packaging, and the fight against counterfeiting more generally. Valuable documents such as passports, identity cards, driving licenses, vouchers, gift vouchers, show tickets and banknotes are often counterfeit by color photocopy or by scanning and printing. various techniques. To fight counterfeiters various means have been put in place for years, it has been developed protections in the medium itself such as watermarks, fluorescent fibers, boards and luminescent dots. It has also been developed protections by inks, prints and external means such as security films, metallized and holographic bands, holograms, etc. Among the means recently put in place it has been developed. printing an iridescent strip so as to make the banknotes non-photocopiable, this strip itself being overprinted in part when printing the bill design. Such security is easily verifiable by individuals and especially merchants who receive the tickets however the security of this band is very limited because of the existence in the trade of iridescent products close to those used for the band, it follows that the tape can be counterfeit quite easily. Still in the field of the greenback, it is known to deposit metallized strips, to print fluorescent patterns and to combine these effects, however these impressions all lead to homogeneous impressions, be they solid colors or If several effects are desired, it is necessary to print on several items, for example by depositing a fluorescent ink on a printing station and a metallized ink on another item and adjust the parameters of each item. printing in order to create special effects by superimposition, this type of printing is expensive and limited security since the counterfeiters can obtain the inks concerned and make counterfeits, 35 or even the inks themselves, each ink having a single effect .

  Moreover, there is a large number of documents on which it is important to have a high security affixed to only a part of the document so as to reduce the cost generated by the protection. It is often sought different levels of authentication and different levels of protection for documents so that an unsuspecting public can easily verify the authenticity of the document and that experts can detect certain the origin of the document. document by means not accessible to the public, these authenticatable devices are generally introduced separately in the documents and brought by different means, for example it is known to bring fluorescent fibers or luminescent spots by the paper support, fluorescent inks or iridescent or optically variable effects by the surface by means of printing. Films and holograms are often affixed to complete the set. It follows from the current state of the art and the development of securities that security combinations are essential to the protection of documents, the problem is that the various securities are brought by several industrial tools, usually one item per item of security. The proliferation of authenticatable systems leads to a loss of control of the security chain and greater ease for counterfeiters to obtain the essential materials for securing the document. High security is not obtained by a single technique and performed on a single industrial site resulting in significant additional costs that can be prohibitive in some applications, this is particularly the case of the protection of brands and packaging for which the protection must be on an unsecured packaging line with limited means of implementation. To date, there is no simple and inexpensive way of protecting brands and packaging with a wide range of security possibilities by a single composition.

  The problem of the cost of treatment also arises for the securing of gift vouchers, checks, raffle tickets, show tickets, vouchers and documents for which the cost of securing is a preponderant factor, in all these applications it is necessary that the document can not be reproduced by photocopy, not scannable and easily authenticated, this can not be achieved in a simple operation and a single composition, possibly applied manually, on a limited number of documents. There is also a problem with the verification and authentication of original documents and the protection of signatures for one-shot documents, for example contracts, documents classified as defense or covered by absolute security whose origin must be certain and clearly distinct copy of the original, there is no simple solution to date, can be filed on any written document, or printed from a personal computer, to protect the document and d affix the equivalent of a wax seal on the original to certify it. The invention therefore aims to solve these main difficulties by proposing a composition that is directly authenticatable without apparatus, in its visible version, and this according to several levels of protection, and also has different means preventing the counterfeit identical by photocopying or scanning and printing the document. Said composition can also be used in a transparent or translucent version in printing overlay and signatures to prevent any modification of the scriptural part. The composition is also authenticatable with simple apparatus such as UV lamps or more sophisticated that can be accessible only to experts. The invention relates to a treatment composition for media such as papers, cartons, films and complexes for making them authenticatable, non-reproducible by photocopies and non-scannable, said composition comprises at least one binder and a vehicle, and is characterized by the presence of: - at least one bottom element homogeneously distributed in the composition providing an authenticizable non-reproducible effect by photocopy and non-scannable, which element is soluble in said composition or dispersed very finely so as to form an effect visual display in daylight or in particular illumination, which background element is of average size less than 30 pm when it is a dispersion, - at least one category of particles being distributed randomly during deposition of the composition on a support, of size between 30 pm and 500 pm, also bringing an authenticatable effect, no reproducible by photocopying and non-scannable, and visually directly perceptible on the plain background, in daylight or under particular lighting, and, either at least one background element, or at least one category of particles, is visible in light of the day without apparatus so as to confirm the presence of said treatment composition on a support.

  The advantages of the treatment composition according to the invention are multiple: several levels of security are possible, the simplest, and therefore the most economical, for single-use tickets for example, more sophisticated for banknotes or banknotes. passports, for example, the security of documents and packaging is based on the fact that the materials used are not widespread, therefore difficult to access, or even inaccessible to forgers, and that the technology used to make the particles and distribute them in a preparation n is not easy, - given the large number of possible combinations between the visible and invisible particles, and the visible and invisible background elements, it is possible to realize systems dedicated to specific applications using raw materials not commercially diffused. in order to avoid counterfeiting possibilities, the composition of can be applied to different types of media, paper, plastic or complex, or even textiles, by the use of a suitable binder and a vehicle chosen according to the application technique, the composition is preferably used with water as a vehicle however for printing applications and under certain conditions it is envisaged to use solvents or other vehicles to transport the bottom elements and the particles on which the security is based, the composition according to the invention These particles can not be used to produce inks according to the usual techniques and only suitable application methods make it possible to treat the support, which constitutes an additional protection against counterfeiting. Other features and advantages of the invention will become apparent from the description which follows with regard to the compositions indicated which are given only by way of non-limiting examples. The treatment composition within the meaning of the invention brings authenticatable and non-reproducible properties by photocopying or scanning on various supports such as paper, cardboard, films or complexes. In particular, it is intended that the composition be used to process banknotes, passports, vouchers, gift vouchers, notarial deeds and documents of broad value. The composition can also be applied to cartons or plastics to authenticate packages and avoid counterfeiting, or to certify original documents. By not reproducible by photocopy it must be understood that the document, for example a banknote, photocopied with a color photocopier, will not reproduce the portion coated with the treatment composition according to the invention identical with the toners present on photocopiers or inks used in commercial printers. By not reproducible by scanning it must be understood that the processed part of the document, for example a passport, can not be recovered identically in a digital file for the purpose of being then printed and reproduced. The treatment composition is a mixture of particular products, mainly composed of pigments, and of at least one binder, this composition is intended to be applied in one or more layers on various supports by means of tools in connection with the support and the application, that is to say for example in the treatment of banknotes it is envisaged to use the composition instead of the formulation used to achieve the iridescent band, used for example on the euro, and with the means of coating used by papermakers for this. For applications on passports, checks, vouchers or gift vouchers, for example, the composition may be introduced in an ink or varnish and deposited by means of a screen printing machine.

  For applications in the field of packaging marking, the treatment composition can be inserted in a glue, in an adhesive or between two polymer layers, or even on the surface by means of a transfer applicator. It is also envisaged, in order to determine that a document is an authentic original, to apply the composition with a manual brush-type applicator, the composition being contained in a bottle, or to deposit it by means of a transfer roller. composition then being placed in solid form on a ribbon so as to be transferred onto the support to be protected. It is also envisaged to apply the composition by means of a sticker, a pen or an applicator pen.

  The treatment composition according to the invention comprises a binder and a vehicle, by binder it must be understood a synthetic or natural polymer making it possible to fix the bottom element and the particles on the support in question, which binder is advantageously a polymer comprising special rheological properties such as carboxymethylcellulose (CMC) or another cellulose derivative, a polyvinyl alcohol (PVA) simple or modified, a starch, polyvinylpyrrolidone (PVP), a latex, an acrylic resin, a guar gum, a alginate and any other polymer for maintaining the particles and a sufficient resistance to abrasion of the composition after drying. Preferably, according to the invention, transparent binders will be used in the dry state and not modifying the fluorescence of the support or else binders having a very specific fluorescence and which may be used as background elements, this may be considered for particular polymers which are intrinsically fluorescent or on which fluorescence-enhancing elements have been grafted. The composition comprises a vehicle for incorporation into an ink, a coating formulation, a glue, a varnish or a manual applicator. Which vehicle is advantageously water, however, it may be envisaged to mix the bottom element and the particles in a solvent or a fatty substance, or even a wax. Depending on the proportion of vehicle and binder in the composition it can be applied alone without other additive on the supports envisaged and mentioned above. By visible light in daylight without apparatus it should be understood in the sense of the invention that the particles, or / and the bottom element, are directly perceived by an uninformed observer, the effect being visible relative to the support without ambiguity and discernable by exposure to the sun or in a normal ambient light, ie to read without difficulty. By invisible in daylight it must be understood in the sense of the invention that the particles, and / or the background element, are not distinguishable from the support in daylight as previously defined and for an uninformed observer. The particles or the bottom element being either transparent or of the same color as the support, that is to say for example white or very slightly colored for the treatment of a paper, or even the color of the ink or of printing in the case of a colored support. By visible under a particular illumination it should be understood within the meaning of the invention that the particles, and / or the bottom element, are unambiguously visible relative to the support or to the treated surface, by means of a lamp. not emitting in the visible range but in other spectral domains, that is to say in a nonlimiting manner, for example, in ultraviolet (UV) light in shortwave, ie in the vicinity of 250 nm, in UV long near 360 nm, infrared. Under the various particular lighting the particles and / or the background element appear to the uninformed observer as different from the support, ie in the aspect of a color, a shade or a brightness different, visually noticeable. Lighting out of the visible range, and the combination of lighting in the visible range and out of it, can obviously be combined to give specific effects. According to the invention, the treatment composition is characterized by the presence of: at least one bottom element homogeneously distributed in the composition giving an authenticatable non-reproducible effect by photocopy and non-scannable, which element is soluble in said composition or dispersed very finely so as to form a visual effect united in daylight or under particular lighting, which bottom element is of average size less than 30 pmm when it is a dispersion, -d'au at least one category of particles is randomly distributed during the deposition of the composition on a support, ranging in size from 30 pmm to 500 pmm, also producing an authenticatable, non-reproducible, non-scannable, and reproducible effect, and being of considerable size. sufficient to be visually directly perceptible on the plain background, in daylight or under a particular lighting, and be at least an element or at least one class of particles, being visible in daylight without apparatus so as to confirm the presence of said treatment composition on a support and deter counterfeiters. According to the invention, when the treatment composition comprises a background element visible in daylight without apparatus, this is preferably chosen from among the pigments based on aluminum, the pigments with iridescent, pearlescent, interferential, shiny effects. , glittering, metallic, holographic, fluorescent in daylight. All these elements are not reproducible identically in color photocopy, not scannable and are authenticable if they are not disseminated commercially on a large scale. Indeed, and for example, the iridescent pigments used today to prevent the copying of banknotes, are diffused in very specific colors only to certified speakers in the field. In fact it is not possible for printers or paper manufacturers to obtain these special products, the raw material is inaccessible to counterfeiters.

  Such raw materials with restricted commercial diffusions are envisaged for the treatment composition. According to the invention, the treatment composition contains at least one class of particles, when at least one class of particles is visible in daylight without apparatus, the latter is preferably chosen from: - large scintillating pigments such as microplates or microbeads incorporating in their structure an optically transparent part, fluorescent or phosphorescent spots visible in daylight, agglomerated aluminum particles, iridescent, pearlescent, holographic, interferential, shiny, metallic, optically-effect points variables, which points consist of agglomerates of smaller materials or present in the form of large-sized materials, micro-fibrils or microplates fluorescent in daylight, iridescent, pearlescent, metallized, holographic, coated with aluminum, metals or liquid crystals which particles are It is preferably of medium size greater than 40 μm and not precisely calibrated when it comes to agglomerates. By not precisely calibrated particles it should be understood that the particle size distribution is wide, with large particles and fines not necessarily evenly distributed around a medium size, these particles are therefore also authenticatable and protected against counterfeiting by this heterogeneity. Preferably the visible or invisible particles, more particularly the points consisting of agglomerates, are not calibrated, it is however not excluded to use particles homogeneously distributed around an average size, in particular with regard to pigments, micro-fibrils or micro-boards. The previously defined particles have the common point of not being reproducible by photocopying or scanning.

  The treatment composition according to the invention may contain in particular reflective particles in the form of platelets or microbeads incorporating into their structure at least one optically transparent material, generally a compound classified in the general family of glasses, for example a borosilicate. The dimensions of the particles, that is to say their greatest length in the case of microplates or the diameter in the case of microbeads, are less than 300 μm and preferably between 50 and 250 μm so that reflective effect is optimal. Too fine particles, that is to say, the size of the usual coating pigments, typically less than 30 .mu.m, have a very attenuated shiny or scintillating effect on each individualized particle, less easily perceptible to an unsuspecting observer. Such microplates or reflective microbeads, when they are of average dimensions less than 30 μm, therefore play a part in the present invention.

  The reflective effect of the platelets or balls is created by the combination of an optically transparent material and a light reflecting material, the manufacture of such particles in the form of platelets or beads is known per se and carried out in particular by Merck or Engelhard companies that have developed technologies to obtain particles with different materials deposited in successive layers. The treatment composition according to the invention comprises at least one class of particles in the form of microplates or reflective microbeads incorporating at least one optically transparent material in their structure, and at least one binder for fixing said particles in and on the surface of the paper. Reflective microplates of dimensions of between 20 and 200 μm, which are quite suitable, are for example sold by Merck under the name MIRAVAL and under the reference 5411 Magic White, or by Engelhard under the reference MEARLIN FIREMIST PEARL.

  Visible and large fluorescent or phosphorescent spots are, for example, those made by the applicant and marketed under the name of "a-dots" and correspond to the references PFVR and PFVJ, respectively visible fluorescent in red and in yellow, advantageously in the context of the invention the particles have an average size of between 40 μm and 200 μm. These points are not precisely calibrated around an average size. It should be noted that such points may also be considered as having a fluorescent color in daylight, and be discernible under UV light, long or short wave, in another color, in fact each particle is at once authentiable in the visible and invisible in the sense of the invention. Large particles formed by agglomerates of smaller particles and capable of employing iridescent, holographic, pearlescent, glittering, shiny, metallic pigments, especially aluminum particles, pigments or coatings with interferential effects, etc. can be obtained by different routes, in particular that described in patent EP 226 367. Advantageously, the large particles will have a density close to that of the vehicle used to prepare the treatment composition, especially when they result from the aggregation smaller particles. In the case of an aqueous preparation there are means allowing particles of unit densities greater than 1 to form aggregates whose density is of the order of 1 or even lower, for example by trapping air. Particles, whether visible or invisible, whose density is close to that of the vehicle used in the composition are therefore preferably used, said particles being in the sizes defined above.

  The density of the particles is a determining parameter for maintaining the preparation in a state of dispersion that can be used for the various applications envisaged as well as for the application itself, in particular to avoid settling and separation of the constituents of the composition.

  Moreover, the particles used are manufactured and defined so as to withstand shear stresses sufficiently to be applied both in the paper industry and in the printing industry or with other industrial means for depositing the composition on the surface of the paper. 'a support.

  According to the invention, the treatment composition may comprise at least one background element invisible in daylight on the support and detectable under a particular lighting, which bottom element is preferably chosen from pigments or fluorescent or phosphorescent dyes, pigments or anti-Stokes dyes, products visible under infra-red light, photochromic products.

  According to the invention, the treatment composition may comprise at least one category of invisible particles in daylight on the support and detectable under a particular lighting, which category of particles is preferably chosen from fluorescent, phosphorescent, photochromic spots and agglomerates. agglomerates of anti-Stokes or visible pigments or dyes under infra-red light, fluorescent, phosphorescent, photochromic or anti-Stokes micro-fibrils or micro-boards, or particle agglomerates comprising at least two of the products mentioned above and used in combination to form multiple effects on the same particle, which particles are preferably of average size greater than 40 microns and not precisely calibrated when it comes to agglomerates.

  According to the invention the treatment composition may comprise at least one background element visible in daylight and at least one category of visible particles in daylight without apparatus, and further comprising at least one background element, or at least one a category of particles, invisible in daylight and visually detectable under a particular lighting. In fact, it is advantageously associated, for example, with a visible background element, in particular an interference-effect pigment, a class of particles visible in daylight, for example pigments with scintillating effects, such as the MIRAVAL pigments of the company. Merck, and for example an invisible background element, especially a fluorescent pigment in yellow UV long and invisible in the light of the day finely dispersed so as to have a homogeneous background. According to the invention, the treatment composition may comprise at least one background element that is invisible in daylight and at least one category of particles that are invisible in daylight, and furthermore comprise at least one background element or a category of visible particles. in daylight without apparatus. The treatment composition may also include at least one class of particles visible in daylight and a category of invisible particles in daylight, and further comprise at least one background element visible in daylight without an apparatus or an element of light. background invisible in daylight and noticeable under a particular lighting. The treatment composition may also comprise at least one background element visible in daylight and an invisible background element in daylight, and furthermore comprise at least one category of particles visible in daylight without apparatus or invisible in light of the light. day and perceptible under a particular lighting.

  As has been described above, many combinations are feasible, more or less secure and more or less expensive, depending on the desired protections on the products. In particular, a high-level protection is envisaged for the bank note, in which the treatment composition comprises at least one background element visible in daylight and at least one category of particles visible in daylight, as well as at least one background element invisible in daylight and at least one category of invisible particles in daylight and noticeable under a particular lighting.

  Such protection may correspond to a composition in which: the bottom element visible in daylight is chosen from pigments with interferential effects or aluminum pigments, the invisible background element in daylight is chosen from fluorescent, phosphorescent or anti-Stokes pigments or dyes, a category of visible particles in daylight is chosen from large-sized scintillating pigments such as microplates or microbeads incorporating in their structure an optically transparent portion, and / or visible fluorescent dots also having fluorescence under illumination out of daylight, which fluorescence can be in the same color as that observable in visible light or advantageously in a different color,

  a category of invisible particles in daylight is chosen from points having multiple effects such that each point has at least two effects, fluorescent in one color and phosphorescent in another color, or fluorescent in shortwave UV in one color and fluorescent UV long wave in another color, or fluorescent in one color and also photochromic.

  Whether visible or invisible background elements and visible or invisible particles, it is possible to envisage in each set of combinations that allow reinforced non-photocopiable and authenticated effects, for example:

  concerning the visible bottom element, aluminum particles and pigments with interference effects can be combined to give a colored metallized effect whose color is changing according to the angle of observation, two visible background elements being thus added, concerning the invisible background element, it can be associated fluorescent pigments UV short wave in one color and fluorescent pigments long wave UV in another color, and even more phosphorescent in a third color, concerning the particles visible in daylight, it can be introduced simultaneously into the composition of the scintillating particles as previously described and visible fluorescent spots or agglomerates of iridescent or metallized particles,

  Regarding invisible particles in daylight, it can be combined fluorescent points in one color and phosphorescent or fluorescent points in another color, it can also be envisaged to combine points with multiple fluorescence between them, each point being for example fluorescent in one color in UV short wave and fluorescent or phosphorescent in another color, an example of a point with multiple effects is for example marketed by the applicant under the reference B3011, each large individual point, average size typically greater than 40 pm is short-wave fluorescent in white, long-wave fluorescent in pink and phosphorescent in blue.

  The treatment composition according to the invention combines in the same mixture, preferably applied in a single layer and in the aqueous phase, a multitude of effects by combining particles and background elements, the association being quite original and very difficult to reproduce by counterfeiters.

  Advantageously according to the invention and so that the visible or invisible particles are clearly discernable relative to the visible or invisible bottom element, the dry weight ratio in the composition between the bottom elements and the particle categories is at least 3 and preferably 5, this ratio expresses the fact that there is at least three times more material forming the bottom than particle-forming material in the composition.

  More preferentially still when a category of particles is associated with a background in the same field of visibility, ie visible particles and a visible background, or invisible particles and an invisible background, this report in the same field of visibility is at least 5 and more preferably still greater than 7 so that the particles are clearly individualized and discernible.

  The treatment composition comprises a vehicle for its application on the support to be protected, thus the vehicle is advantageously water and the composition is then used mainly in the manufacture of an ink, a varnish, an adhesive, of a surfacer coating or impregnation coating solution, or used for the preparation contained in a manual applicator, which composition is intended to be deposited preferably in a single layer. In the paper industry, the treatment composition according to the invention is applicable to all types of paper and paperboard, by means of a tool disposed inside the paper machine, preferably a gluing press, a device for multiple rollers known under the names "gate roll" or "massey", an impregnator, a roller device having pre-dosages for the coating formulation such as for example that called "blade metering size press" ("BMSP") , or any other device. Traditional coating tools arranged inside the paper machine or off the paper machine can also be used for depositing the treatment composition, such as, for example, air-curtain or curtain coatings. The vehicle of the composition may also be a solvent or a heavy alcohol and the composition may be used mainly in the manufacture of an ink, or a varnish, the composition then being intended for application on papers, labels, glossy metallized strips, on holograms, on plastic substrates or films, which films can be cut to form security threads, vignettes or anti-copy ribbons. The vehicle can also be considered as a mixture of wax and polymer or a mixture of a solvent and water, and the composition can be used mainly in the manufacture of a manual applicator allowing a solid transfer ribbon removed by means of a brush, a sticker, a pencil or an applicator pen. According to a first advantageous example of embodiment of the invention, an authenticatable and non-photocopiable tape is produced on a bank note by printing a treatment composition containing as a dry percentage of each material on the dry quantity deposited:

  2% of MIRAVAL 5411 MAGIC WHITE from MERCK whose particles are scintillating in the sun and in ambient lighting, particle sizes of between 20 μm and 200 μm, and of average size greater than 40 μm, forming a category of visible particles ,

  25% of MERCK IRIODIN Afflair 223 pigment, with an interferential effect, of average size of the order of 10 μm forming a visible background element, 8% of blue fluorescent dye JST09 marketed by RADIANT COLOR, white in daylight and fluorescent blue long UV, average size of the order of 3 microns, forming an invisible background element, -15% of XYMARATM GREEN SF1A from CIBA company, fluorescent white UV shortwave and white in daylight , and of average size of 3 μm, forming a second invisible bottom element, 15% of polyvinylpyrrolidone K90 sold by ISP as a binder, 35% of an acrylic resin also serving as a binder. The vehicle of the composition is advantageously water, the composition being prepared at a solids content of 20%. The band applied in the width of the ticket and in a print of 1 centimeter wide is non-photocopiable, non-scannable and authenticated. The strip has in particular the following particularities: a bottom element visible in daylight having an interferential effect, the color of the strip is slightly green at a viewing angle and pink at another angle, the large scintillating particles are clearly noticeable in daylight without equipment, especially in the sun, they are individualized and well differentiated with respect to the surface of the paper, under UV light in shortwave the band appears fluorescent in green yellow, under UV light long wave band appears fluorescent in intense blue. A second advantageous embodiment consists in using the preceding composition in which a very small amount of A-dots B3011 particles are added, these points being added in a proportion of 2% in points in the dry state relative to the total of the dry composition of the previous example. In addition to the previous remarkable effects that are preserved, the band also exhibits under UV long pink dots stand out clearly on the blue fluorescent background, and when the fluorescence is cut off and the observation made in the dark the points are visible in a phosphorescence color blue. The treatment composition then comprises a second class of particles, which particles are invisible in daylight.

  A-dot B3011, of average size greater than 50 pm, being marketed by the applicant.

  Given the impossibility for counterfeiters to obtain items B3011 only sold to companies producing banknotes, given the difficulty to supply the other products of the composition and the difficulty of implementation of all to achieve a composition applicable without difficulty the above solution can be considered completely non-reproducible and high security. Color photocopying and reproduction by printing after scanning is impossible because of all the cumulative elements of which each taken individually is already not reproducible. All these safeties are implemented in a single formulation that can be deposited in a monolayer by a screen printing process or a coating process.

  A third embodiment of a treatment composition is formulated with the following products expressed in percentages which correspond to the dry quantity of each material on the dry quantity deposited:

  1% of MIRAVAL 5411 MAGIC WHITE from MERCK whose particles are scintillating in the sun and in ambient lighting, particle sizes of between 20 μm and 200 μm, and of average size greater than 40 μm, forming a category of visible particles 2% of fluorescent dots visible in red referenced a-dots PFVR in the applicant whose average size is greater than 50 pm, forming a second category of visible particles,

  20% of XYMARATM ICE BLUE SF2A from CIBA, fluorescent white in UV shortwave and white in daylight and of average size 3 pm, forming an invisible background element,

  7% of yellow phosphorescent pigment marketed by 35 USR under the reference 2330 MBW Green, of average size 14 μm, forming a second invisible bottom element,

  20% of polyvinyl alcohol of high degree of hydrolysis, serving as a binder, -50% of a carboxylated styrene-butadiene latex as a binder.

  The vehicle of the composition is advantageously water, the composition being prepared at a solids content of 20%.

  The previously defined treatment composition is deposited by means of a gluing press placed in a paper machine on a check carrier of 95 g / m 2 at a wet setting of 45%.

  The paper thus treated is white, it has glittering points visible in the sun and red fluorescent dots scattered on the surface clearly perceptible to the eye in daylight.

  10 Under short-wave UV light the paper appears fluorescent in white, in long wave UV the paper is yellow and has yellow phosphorescence when the UV illumination is cut, in short and long UV the red fluorescent dots are clearly visible on the substantially homogeneous fluorescent yellow background.

  According to a fourth exemplary embodiment, the following treatment composition is used with a brush-type manual applicator to protect a writing and to authenticate a document, the composition contains in percentage by dry weight of each constituent on the dry matter of the preparation:

  20 - 3% of MIRAVAL 5411 MAGIC WHITE from MERCK whose particles are scintillating in the sun and in ambient lighting, particle sizes of between 20 μm and 200 μm, with an average size greater than 40 μm, forming a category of visible particles,

  25 - 25% of MERCK IRIODIN Afflair pigment 7235, with interference effect, forming a visible bottom element,

  20% of XYMARATM ICE BLUE SF2A from CIBA, white fluorescent in UV shortwave and white in daylight, and of average size 3 μm, forming an invisible background element,

  12% of red fluorescent pigment marketed by USR under the reference P555 Red, of average size close to 6 μm, forming a second invisible bottom element,

  2% blue fluorescent invisible dots referenced a-dots B1012 in the applicant whose average size is greater than 50 μm, forming a category of invisible particles, 18-20% of polyvinylpyrrolidone, serving as binder, 20% of a silanized PVA marketed by the company SEPPIC under the reference R1130, serving as a binder. The composition is applied on the amount of a check and on the indication of the recipient to avoid any attempt of falsification and to authenticate the document.

  The document thus treated by the manual applicator is scintillating in ambient light, the treated part remains transparent but has green or pink reflections depending on the angle of observation. Under UV in short waves the treated part is visible in white and visible in red in long UV. Fluorescent particles in blue appear on the plain red background in long UV. The document is non-photocopiable and not reproducible by scanning but the underlying scripts are perfectly legible and the check can be processed on an automated collection channel.

  It is quite possible to add either in the particles or with the background element authenticatable means not visible in daylight or under the lighting specified above, such as magnetic markers, conductive materials, tracers radioactive, DNA and various reagents capable of interacting with a suitable detector without departing from the scope of the invention, all of which may constitute additional protections for bank notes and high security documents may consider with the bottom element or with the particles, especially in the latter case inside the agglomerates.

  The treatment composition according to the invention can obviously be applied to a support already containing authenticatable elements and in particular for example visible or invisible fluorescent spots placed in the mass of the paper, without departing from the scope of the invention. The treatment composition according to the invention may comprise pigment fillers, additional binders, rheology modifiers, wetting agents, defoamers, surfactants and various additives commonly used in this type of formulation. Of course, the invention is not limited to the embodiments described and shown by way of example, but it also includes all technical equivalents as well as combinations thereof.

Claims (14)

  A treatment composition for media such as papers, cartons, films and complexes for rendering them authenticatable, non-reproducible by photocopies and non-scannable, comprising at least one binder and a vehicle, and characterized by the presence: at least one bottom element homogeneously distributed in the composition providing an authenticizable non-reproducible effect by photocopy and non-scannable, which element is soluble in said composition or dispersed very finely so as to form a united visual effect in light of the day or in a particular illumination, which bottom element is of average size less than 30 pm in the case of a dispersion, at least one category of particles being distributed randomly during the removal of the composition on a support, of size between 30 pm and 500 pm, also bringing an authenticatable effect, not reproducible by photocopy and not s cannable, and visually directly perceptible on the plain background, in daylight or under particular lighting, and at least one bottom element, or at least one class of particles, being visible in daylight without confirming the presence of said treatment composition on a support.   2- Composition according to claim 1 wherein the bottom element is visible in daylight without apparatus and selected from aluminum-based pigments, pigments with iridescent effects, pearlescent, interferential, shiny, scintillating, metallic, holographic, fluorescent in daylight.   3. Composition according to claim 1, in which at least one class of particles is visible in daylight without apparatus and is chosen from: large-scale scintillating pigments such as microplates or microbeads incorporating in their structure an optically transparent portion; fluorescent or phosphorescent dots, agglomerated aluminum particles, iridescent, pearlescent, holographic, interferential, shiny, metallic, optically variable dots, which dots consist of agglomerates of smaller materials or present in the form of large-sized materials, - micro-fibrils or microplates fluorescent in daylight, iridescent, pearlescent, metallized, holographic, coated with aluminum, metals or liquid crystals, which particles are preferably of average size greater than 40 pm.   4- Composition according to claim 1 wherein at least one bottom element is invisible in daylight on the support and detectable under a particular lighting, which bottom element is preferably selected from pigments or fluorescent or phosphorescent dyes, the pigments or anti-stoke dyes, photochromic products.   5. The composition as claimed in claim 1, in which at least one class of particles is invisible in daylight on the support and detectable under a particular illumination, which category of particles is preferably chosen from fluorescent, phosphorescent, photochromic spots and agglomerates. agglomerates of anti-Stokes or visible pigments or dyes under infra-red light, phosphorescent or anti-Stokes fluorescent micro-fibrils or micro-boards, or particle agglomerates comprising at least two of the products mentioned above and used in combination to form multiple effects on the same particle, which particles are preferably of average size greater than 40 μm.   6. Composition according to claims 2 and 3 containing at least one background element visible in daylight and at least one class of particles visible in daylight without apparatus, and further comprising at least one background element, or at least a category of particles, invisible in daylight and visually detectable under a particular lighting.   7- Composition according to claims 4 and 5 containing at least one background element invisible in daylight and at least one category of invisible particles in daylight, and further comprising at least one background element or a category of visible particles. in daylight without apparatus.   8- Composition according to claims 3 and 5 containing at least one class of particles visible in daylight and a class of invisible particles in daylight, and further comprising at least one background element visible in daylight without equipment or a background element invisible in daylight and noticeable under a particular lighting.   9- Composition according to claims 2 and 4 containing at least one background element visible in daylight and an invisible background element in daylight, and further comprising at least one category of particles visible in daylight without equipment or invisible in daylight and noticeable under special lighting.   10- Composition according to claims 2, 3, 4 and 5 comprising at least one background element visible in daylight and at least one category of particles visible in daylight, and at least one background element invisible in light of the day and at least one category of invisible particles in daylight and perceptible under a particular lighting.   11- The composition of claim 10 wherein: the bottom element visible in daylight is selected from pigments with interferential effects or aluminum pigments, the background element invisible in daylight is selected from pigments or fluorescent, phosphorescent or anti-stokes dyes, a category of visible particles in daylight is chosen from large scintillating pigments such as microplates or microbeads integrating in their structure an optically transparent portion, and / or fluorescent dots also having a different color under daylight, a category of invisible particles in daylight is selected from points having multiple effects such that each point has at least two effects, fluorescent in one color and phosphorescent in another color, or fluorescent in UV short wave in a color e It is fluorescent in long wave UV in another color, or fluorescent in one color and also photochromic.   12. Composition according to any one of the preceding claims wherein the vehicle is water and the composition is used mainly in the manufacture of an ink, a varnish, an adhesive, a coating solution. for surfacing or impregnation in stationery, or used for the preparation contained in a manual applicator, which composition is intended to be deposited in a single layer.   13- A composition according to any one of claims 1 to 11 wherein the vehicle is a solvent or a heavy alcohol and the composition is used in the manufacture of an ink, or a varnish, the composition then being intended primarily to an application on papers, labels, glossy metallized strips, holograms, plastic substrates or films, which films can be cut to form security threads, vignettes or anti-copy ribbons.   14. Composition according to any one of claims 1 to 11 wherein the vehicle is a mixture of wax and polymer or a mixture of a solvent and water, and the composition is used mainly in the manufacture of an applicator Manual allowing a solid removal by transfer ribbon or removal by means of a brush, a sticker, a pencil or an applicator pen.