• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a document (15) comprising: - at least a first image (5) comprising at least one invisible photoluminescent pigment under illumination in visible light and visible under illumination by at least a first source (20) of non-visible light emitting in the field of short ultraviolet radiation, characterized in that it further comprises: at least one second image comprising at least one invisible photoluminescent pigment under illumination in visible light and visible under illumination by at least one second non-visible light source emitting in the field of long ultraviolet rays, at least one layer, called the filtering layer, arranged facing said second image and comprising at least one material, called filtering material, adapted to allow filtering the wavelengths emitted by said first source of light not visible, without preventing the first image from being illuminated by the first light source e.
    公开号:FR3018730A1
    申请号:FR1452465
    申请日:2014-03-24
    公开日:2015-09-25
    发明作者:Eric Philippe；Laurence Bes
    申请人:Fasver SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to a document, in particular an official document, comprising at least two images each comprising at least one photoluminescent pigment, a security film comprising such at least two images each comprising at least one photoluminescent pigment, a security film comprising such photoluminescent pigment, a security film comprising images and a method of safely protecting such a document. Throughout the text, the term "visible light" refers to any light whose spectral composition is at least partially in the visible range, from 0.4 .mu.m to 0.8 .mu.m. Throughout the text, the term "non-visible light" refers to any light whose spectral composition is located outside the visible spectrum, especially in the ultraviolet and / or infrared spectrum. Throughout the text, the term "short ultraviolet" means any light whose spectral composition is in the wavelength range between 100 nm and 300 nm, and in particular between 200 nm and 300 nm. Throughout the text, the term "long ultraviolet" any light whose spectral composition is located in the wavelength range between 300 nm and 400 nm. Throughout the text, the term "photoluminescent" any pigment (or any image) adapted to emit at least one visible radiation in response to illumination by at least one invisible light source emitting in the field of ultraviolet and / or infrared. Many devices and methods for the protection of official documents (passports, visas, identity cards, driving licenses, gray cards, bank cards, diplomas, certificates, tickets, access control cards, badges, etc.) are known. , labels, legal acts, contracts, cadastral plans, plans of manufacture or other plans ...) bearing inscriptions, in particular inscriptions to be read such as variable mentions (name, first name, address, photo, ... of a holder or parties ...) and / or common mentions 30 (security reasons, matrices, frames, field names, seals, holograms, ...) to be protected against forgery attempts and / or counterfeits and / or for authentication and / or to guarantee their integrity (that is, they have not been altered or modified). Photoluminescent monochromatic or polychromatic printed labels invisible under light in visible light and visible under illumination by at least one non-visible light source (ultraviolet or infrared, for example) are often used for authentication purposes of such official documents as passports or banknotes. WO 00/24587 describes for example a method for producing an invisible photoluminescent printed polychromatic image under visible light, and visible under illumination by at least one non-visible light source and a device for protecting a document comprising at least one such image. WO 00/24587 also describes the possibility of preparing an image comprising different pigments whose absorption spectra may be different, for example photoluminescent pigments whose absorption spectrum is comprised in long ultraviolet and / or photoluminescent pigments whose absorption spectrum is included in the short ultraviolet and / or photoluminescent pigments whose absorption spectrum is included in the infrared. Several different non-visible light sources are then necessary to be able to visualize the prepared image.
    [0002] However, in the field of securing official documents, it would be necessary to further increase the security and authentication levels of such a device, in particular by using on the same document images sensitive to short ultraviolet and sensitive images. with long ultraviolet light. However, the inventors have found that when at least partially superimposed a visible image under long ultraviolet and a visible image under short ultraviolet, there is usually a poor rendering of the visible image under short ultraviolet. It is therefore not possible to efficiently control a visible image under short ultraviolet light, that is to say an image comprising photoluminescent pigments under illumination by a non-visible light source emitting in the field of short ultraviolet light, when a another image visible under long ultraviolet, that is to say an image comprising photoluminescent pigments under illumination by a non-visible light source emitting in the long ultraviolet range, is applied to the same document, one next to the other or in particular when they are at least partially superimposed. It turns out that an image sensitive to long ultraviolet is also activated (at least partially visible) under illumination by a non-visible light source emitting in the field of short ultraviolet. The invention therefore aims to overcome the disadvantages of known protection devices and to propose a document, in particular an official document, and a security film having an increased level of security.
    [0003] The invention also aims at providing a method for the secure protection of a document, in particular an official, simple, reliable and inexpensive document making it possible to reproduce images, in particular images of polychromatic origin, and to improve the level security and authentication of a document, in particular an official document.
    [0004] To do this, the invention relates to a document, in particular an official document, comprising: at least a first invisible image under illumination in visible light and visible under illumination by at least a first non-visible light source emitting in the field of short ultraviolet radiations, said first image comprising at least one photoluminescent pigment under illumination by said first non-visible light source, characterized in that it further comprises: at least one second invisible image under visible light and visible under illumination by at least one second non-visible light source emitting in the long ultraviolet range, said second image comprising at least one photoluminescent pigment under illumination by said second non-visible light source, at least one layer, called filtering layer, superposed on said second image and comprising at least one material, said filter material, 30 ad adapted to allow the wavelengths emitted by said first non-visible light source to be filtered without preventing the first image from being illuminated by the first light source. The inventors have surprisingly found that by placing such a filter layer opposite an image visible under illumination by a light source emitting in the long ultraviolet range, it is possible to obtain a first visible image under illumination by means of less a non-visible light source emitting in the field of short ultraviolet of good quality. Thus, it is now possible to arrange at least partially one above the other or at least partially to juxtapose a visible image under long ultraviolet and a visible image under short ultraviolet while this was in practice not possible before. The invention thus makes it possible to produce on the same document two different images, one visible under short ultraviolet and the other visible under long ultraviolet light by disposing a filtering layer as defined above with respect to the invisible image under illumination. in visible light and visible under illumination by at least one non-visible light source emitting in the field of long ultraviolet. It is thus possible to increase the number of authentication levels, since a first illumination by at least a first non-visible light source emitting in the short ultraviolet range makes it possible selectively to verify the presence of a first image without visualization. other parasitic patterns; and a second illumination by at least a second non-visible light source emitting in the long ultraviolet range makes it possible selectively to check the presence of a second image without viewing other parasitic patterns, the two images being selectively visible with a very high good quality. Advantageously and according to the invention, the first non-visible light source and the second non-visible light source emit in wavelength ranges that are at least partly different. Advantageously and according to the invention, a document according to the invention is an official or security document chosen from the group consisting of documents comprising identity data (such as passports, identity card, driving license or visas). ), documents issued by an official administration and documents containing security data (such as bank cards or badges for controlled access).
    [0005] A document according to the invention, in particular an official document according to the invention, generally bears inscriptions (or "inscriptions to read"), that is to say any sign or motif made on the document, which can be read by humans at least under certain conditions (especially under normal lighting in visible light, and / or under specific lighting, and / or after activation of an electronic device (screen) or other ...). It can be texts (manual writing or printed characters); codes (ASCII, universal codes with optoelectronic reading such as bar codes ...); images or photographs ... Any type of document can be used. It may be documents based on cellulosic materials (paper, cardboard, ...) or based on polymeric materials, rigid or flexible. Advantageously and according to the invention, said filtering layer is suitable for filtering wavelengths less than 300 nm, especially wavelengths between 100 nm and 300 nm, in particular wavelengths between 200 nm and 300 nm. Advantageously and according to the invention, said filtering layer is adapted not to block the wavelengths emitted by the second non-visible light source, in particular wavelengths greater than 300 nm, in particular wavelengths. between 300 nm and 400 nm. In particular, the filtering layer may be formed of at least one material chosen from thermoplastic and thermosetting polymeric materials, in particular photocurable polymer materials. In a first variant, the filtering layer comprises at least one polymeric material selected from the group consisting of polymeric materials suitable for filtering short ultraviolet radiation, and in particular in the group consisting of thermoplastic polymeric materials (especially polycarbonates, polyesters and polyesters). polyvinyl chlorides (PVC)), thermosetting polymeric materials (especially polyurethanes) and photocurable polymeric materials (in particular acrylic functionalized resins crosslinked or polymerized under ultraviolet radiation or under electron irradiation). Indeed, it is possible to choose from these polymers, those having a crystallinity and possibly an unsaturated carbon-carbon bond ratio adapted to filter short ultraviolet while remaining transparent to visible light. In particular, the filtering layer comprises at least one polymeric material selected from the group consisting of polymeric materials having a transmittance of less than 30% at wavelengths less than 300 nm. The transmittance can be measured using a UV-visible spectrophotometer. In a second variant, the filtering layer comprises at least one polymeric material selected from the group consisting of polymeric materials comprising additives adapted to filter short ultraviolet radiation, and in particular in the group formed of acrylate polymers and co-polymers and or methacrylate in which filtering additives selected from short ultraviolet filtering additives, such as those of the 2- (2-hydroxyphenyl) benzotriazole (BTZ) or 2-hydroxyphenyl-s-triazine (HPT) family, are added. In addition to the filter layer, various layers such as layers including other security functions or inscriptions may also be present between the first image and the second image. The first image and the second image may be identical or different in terms of size, pattern (s) shown or colors apart from the fact that one is visible under illumination by at least a first source of non-visible light emitting in the field of short ultraviolet and the other is visible under illumination by at least a second non-visible light source emitting in the field of long ultraviolet. Advantageously and according to the invention, said second image is different from said first image, which makes it possible to identify them more easily with respect to each other as a function of the non-visible light source used. Advantageously and according to the invention, said first image and said second image are colored. They can be monochromatic or polychromatic. Advantageously and according to the invention, said first image and said second image are polychromatic images. Advantageously and according to the invention, the second image is at least partially superimposed on the first image.
    [0006] Advantageously and according to the invention, each image is formed in additive synthesis. Each image may be transparent or semi-transparent to visible light. In a particularly advantageous embodiment of a document according to the invention, each image is transparent or semi-transparent.
    [0007] Advantageously and according to the invention, each image is semi-transparent. The proportion and nature of the photoluminescent pigments used make it possible in particular to modify the more or less transparent state of each image. Throughout the text, the term "semi-transparent image" means any image which, when it covers a document or a product, makes it possible to distinguish - in particular from reading - by normal visualization through this image of the characters or motifs underlying them of the document. In particular, a semi-transparent image does not completely mask the characters and / or underlying patterns of the document. Advantageously and according to the invention, each polychromatic image comprises a plurality of superimposed monochromatic printing layers. Advantageously and according to the invention, each printing composition comprises at least one photoluminescent pigment. The photoluminescent pigments used are chosen from fluorescent pigments and phosphorescent pigments. In particular, the photoluminescent pigments used are chosen from mineral pigments, in particular photoluminescent pigments comprising chemical elements belonging to the rare earth family, and organic pigments, in particular organic pigments resistant to radiation from each non-visible light source enabling 30 to ensure the holding in time of each image. In particular, photoluminescent pigments adapted to be printed in screen printing are chosen.
    [0008] Advantageously and according to the invention, said document comprises at least one security film, said security film incorporating at least said second image and said filtering layer. Advantageously and according to the invention, said security film 5 covers at least a surface portion of said document and extends in a format adapted to the format of said surface portion. The invention also extends to a security film, in particular a security film for protecting such a document, said security film comprising: at least one first invisible image under visible light and visible light under illumination; minus a first non-visible light source emitting in the short ultraviolet range, said first image comprising at least one photoluminescent pigment under illumination by said first non-visible light source, characterized in that it further comprises: - at least a second invisible image under illumination in visible light and visible under illumination by at least one second non-visible light source emitting in the long ultraviolet range, said second image comprising at least one photoluminescent pigment under illumination by said second non-light source; visible, - at least one layer, called filtering layer, disposed opposite said second image and comprising at least one material, said filter material, adapted to allow the wavelengths emitted by said first non-visible light source to be filtered, without preventing the first image from being illuminated by the first light source; . Advantageously and according to the invention, said security film comprises at least one support film on which said first image and said second image are disposed, said filtering layer being disposed between said first image and said second image. In another variant of a security film according to the invention, the filtering layer and the support film form a same layer, the first image and the second image being each printed on a different face of this filtering layer acting as a film. support. Advantageously and according to the invention, said filtering layer forms a support film having a first face on which said first image is disposed, and a second face, different from said first face, on which said second image is disposed. The first image and the second image are respectively printed on one side and the other side of the support film, this support film being in this case adapted to allow filtering the wavelengths emitted by said first non-visible light source. , without preventing the first image being displayed under illumination by the first short ultraviolet filter light source. The support film may be opaque or transparent. The support film may be opaque if it is intended to be removed for use of the document, in particular the official document to be protected, after a transfer of the security film on the document. If it is translucent or transparent (in visible light as well as short and long ultraviolet), the support film may be retained once said security film affixed to the document to be protected. The support film may be formed of at least one material selected from cellulosic materials, polymeric materials and their composites. Advantageously and according to the invention, said support film is transparent, in particular transparent to short ultraviolet and long ultraviolet. In this way the support film can form both a support on which are printed each of the images and the filter layer, and a layer protecting the outer surface of the security film, after transfer to the document. Various structural or functional layers (including for example other security functions or inscriptions) may be arranged between the support film and the first image, each layer being chosen, if necessary, so as to be at least partly transparent. short ultraviolet and long ultraviolet (that is to say, in the case where they are intended to remain on the document to be protected and therefore not to be removed after transfer of the security film).
    [0009] In a particularly advantageous embodiment of a document and a security film according to the invention, a transparent protective coating, in particular transparent to short ultraviolet and long ultraviolet, can also be arranged on the support film. It may for example be a layer of varnish transparent to ultraviolet, especially short ultraviolet, such as the varnishes described in the patent application FR 2,834,484. Such varnishes have, after curing, covalent carbon bonds -carbon exclusively saturated. Such a protective varnish is also adapted to be able, if necessary, to be easily separated from the support film on which it is deposited during a transfer on the document. The first image and the second image are arranged on the same document, being juxtaposed or at least partially superimposed on one another. Each image may cover a surface portion of different size and / or shape. They may cover the entire document or only a limited portion of the surface, in the manner of a logo in a particular place in the document. Advantageously and according to the invention, said second image is disposed above said first image on said support film. In this way, the first image and the second image may be located on the same surface portion of the document, overlapping at least partially and if, for example, the portion of area allocated to this security point on the document is limited (the document may already include other security features or areas with inscriptions that you do not want to add such images). The invention also extends to a method for the secure protection of at least one surface portion of a document, in particular an official document, in which: at least one surface portion is applied to first image invisible under illumination in visible light and visible under illumination by at least one first non-visible light source emitting in the field of short ultraviolet light, said first image comprising at least one photoluminescent pigment under illumination by said first non-visible light source , characterized in that: - is applied on said surface portion at least a second invisible image under illumination in visible light and visible under illumination by at least a second non-visible light source emitting in the field of long ultraviolet, said second image comprising at least one photoluminescent pigment under illumination by said second non-visible light source, - superimposed on said second image, a layer, called a filtering layer, comprising at least one material, called filtering material, adapted to allow filtering the wavelengths emitted by said first non-visible light source, without preventing the visualization of the first image under illumination by the first light source. Advantageously and according to the invention, the following steps are successively carried out: the first image is printed on a support film, the filtering layer is deposited above the first image, the second image is printed above the first image; filter layer, an adhesive layer is deposited on top of the second image. The images of a process according to the invention are prepared by a process such as that described in the international patent application WO 00/24587. Advantageously and according to the invention, to apply each image, a plurality of superimposed monochromatic printing layers are printed so that, in the order of reception of the illumination light, they are in the blue order, red, green filtering wavelengths and emission peaks of photoluminescent pigments. Advantageously and according to the invention, in a process according to the invention, the following steps are carried out: at least three monochromatic negatives, each corresponding to a first original image, which is filtered in a lower spectral bandwidth, are prepared; at 15 nm centered at a wavelength, referred to as the wavelength of filtering, chosen from the wavelengths of at least three fundamental colors, the different wavelengths of filtering of the monochromatic negatives being two by two distinct each of these filtering wavelengths being equal to a wavelength of a peak emission of a photoluminescent pigment under illumination by at least one first non-visible light source, - at least three negatives are prepared monochromatic, each corresponding to a second original image that is filtered with a spectral bandwidth less than 15 nm centered at a wavelength, called a wavelength of filtering, chosen from wavelengths of at least three fundamental colors, the different filter wavelengths of the monochromatic negatives being two distinct pairs, each of these filtering wavelengths being equal to a length of wave of a peak emission of a photoluminescent pigment under illumination by at least a second non-visible light source, the second non-visible light source having a spectral composition different from the spectral composition of the first non-visible light source - printing a first polychromatic image by successively printing at least three monochromatic images, using to print each monochromatic image, respectively one of the monochromatic negatives of said first original image and a printing composition comprising at least one pigment photoluminescent having a peak emission wavelength, under illumination by at least one source of non-visible light, which is equal to the filter wavelength used to obtain said monochromatic negative, - a second polychromatic image is printed by successively printing at least three monochromatic images, using to print each monochromatic image, respectively one of the monochromatic negatives of said second original image and a printing composition comprising at least one photoluminescent pigment having a peak emission wavelength, under illumination by at least one non-visible light source, which is equal to the filtering wavelength used to obtain said monochromatic negative. Each printing composition can be applied by any technique for printing an image comprising photoluminescent pigments. Advantageously and according to the invention, each image is printed by a technique chosen from screen printing, flexography, offset and gravure printing. The invention extends to a method for the secure protection of at least one surface portion of a document, in particular an official document, in which a security film according to the invention is transferred to said document. The invention also extends to a method of manufacturing a security film in which: at least one first invisible image is printed under illumination in visible light and visible under illumination by at least one first non-visible light source emitting in the field of short ultraviolet radiation, using at least one printing composition comprising at least one photoluminescent pigment under illumination by said first non-visible light source, characterized in that: - at least one second image is printed invisible under illumination in visible light and visible under illumination by at least one second non-visible light source emitting in the field of long ultraviolet light, using at least one printing composition comprising at least one photoluminescent pigment under illumination by said second non-visible light source is provided, facing said second image, a layer, said filter layer, comprre at least one material, said filter material, adapted to allow filtering the wavelengths emitted by said first non-visible light source, without preventing the first image from being illuminated by the first light source.
    [0010] The invention also relates to a document, in particular an official document, a security film, a security protection method and a method of manufacturing a security film characterized in combination by all or some of the features mentioned above or ci ci -after.
    [0011] Other aims, features and advantages of the invention appear on reading the following description of one of its preferred embodiments given by way of non-limiting example, and which refers to the appended figures in which: FIG. 1 is a diagrammatic cross-sectional view of a security film according to the invention; FIG. 2 is a diagrammatic cross-sectional view of an official document according to the invention; FIGS. 3 to 5 illustrate the different steps of a method according to the invention.
    [0012] In Figures 1 to 5, the scales are not respected, for purposes of illustration. In particular, in Figure 1 the thicknesses are exaggeratedly enlarged. On a support film 2 end opaque, translucent or transparent polymer material is printed a transparent protective varnish 4, including transparent ultraviolet short and long ultraviolet. The support film 2 is generally chosen so as to have a size which exceeds that of the surface to be covered with the official document to be protected. The support film 2 may alternatively be opaque to the extent that it is intended to be removed after a transfer to an official document. If it is translucent or transparent (in visible light as well as in short and long ultraviolet light), it can be removed or retained when transferred to the official document to be protected (its size can then be adjusted to that of the surface to be covered with the official document to be protected). A first invisible polychromatic image is then imaged under visible light and visible under illumination by at least one first source 20 of non-visible light emitting in the short ultraviolet range, using three printing compositions comprising: photoluminescent pigments under illumination by the first source 20 of non-visible light. The three printing compositions which form three layers 6a, 6b and 6c are successively printed therefor. After printing the image 5, a filtering layer 7 is printed directly above the image 5 to enable filtering of the wavelengths emitted by the first non-visible light source 20, without preventing the display of the first image under illumination by the first light source. The filtering layer may be formed of at least one material selected from thermoplastic and thermosetting polymeric materials, particularly photocured sintered polymeric materials. In a first variant according to the invention, the filtering layer comprises at least one polymeric material selected from the group consisting of polymeric materials suitable for filtering short ultraviolet radiation, and in particular in the group consisting of thermoplastic polymeric materials (especially polycarbonates, polyesters and polyvinyl chlorides (PVC)), thermosetting polymeric materials (especially polyurethanes) and photocurable polymeric materials (in particular acrylic functionalized resins crosslinked or polymerized under ultraviolet radiation or under electron irradiation). The filtering layer comprises in particular at least one such polymeric material having a transmittance (measured using a UV-visible spectrophotometer) of less than 30% at wavelengths less than 300 nm. In a second variant according to the invention, the filtering layer comprises at least one polymeric material selected from the group consisting of polymeric materials comprising additives adapted to filter short ultraviolet radiation, and in particular in the group consisting of polymers and co-polymers. of acrylate and / or methacrylate comprising filtering additives selected from short ultraviolet filtering additives, such as those of the family of 2- (2-hydroxyphenyl) -benzotriazole (BTZ) or 2-hydroxyphenyl-s-triazine (HPT ). Directly above the filtering layer 7, a second invisible polychromatic image 9 is imaged under illumination in visible light and visible under illumination by at least one second source 22 of non-visible light emitting in the long ultraviolet range, at the same time. using three printing compositions comprising photoluminescent pigments under illumination by the second source 22 of non-visible light. For this purpose, the three printing compositions which form three layers 8a, 8b and 8c are successively printed. An adhesive layer 10 can then be deposited on top of the second image 9, then a film 12 for protecting the adhesive. The security film 1 thus obtained may constitute a heat transfer, that is to say may be used to apply the security film 1 and transfer it by hot lamination on a surface portion of an official document 15, as shown in Figures 3 to 5, in particular to protect against forgery and / or to authenticate the official document and / or variable or common inscriptions previously printed on this surface portion and / or to ensure its integrity. FIG. 2 shows an official document 15 on which the security film 1 has thus been transferred after having removed the protective film 12 from the adhesive layer 10. Once the security film 1 has been placed on the official document 15 the support film 2 used as the transfer support film is also removed. If it is present, the protective varnish 4 then makes it possible to protect the first polychromatic image 5 from external aggressions, in particular chemical and climatic attacks, and also increases its resistance to mechanical stresses. The support film 2 may for example be a Fasprotek ™ type film (FASVER, Baillargues, France). Alternatively, the support film 2 may also comprise a single layer (not supported by a support and without a layer of protective varnish 4), for example a film of FasfilmTM type (FASVER, Baillargues, France). In this case, the continuous layer is for example formed of polyethylene terephthalate, polycarbonate or polyvinyl chloride and may serve as a filter layer, the first polychromatic image being printed on a first side of the support and the second polychromatic image being printed on a second face of the support, different from the first face. The first image and the second image are thus printed respectively on one side and the other side of the polyethylene terephthalate, polycarbonate or polyvinyl chloride film and filtering short ultraviolet. In addition, in the latter case, the adhesive layer is not necessary to allow hot rolling transfer of the security film 1 to a surface portion of an official document 15. The photoluminescent pigments used are chosen from fluorescent pigments and phosphorescent pigments. In particular, the photoluminescent pigments used are chosen from mineral pigments, in particular photoluminescent pigments comprising chemical elements belonging to the rare earth family, and organic pigments resistant to radiation from each non-visible light source making it possible to hold in the time of each image.
    [0013] Figures 3 to 5 show an official document (eg an identity card) to which the security film as previously prepared has been transferred. Figure 3 shows the official document as seen under visible light (daylight for example). The images 5 and 9 comprising photoluminescent pigments are therefore not visible. The official document 15 has inscriptions 17, including identity data. The inscriptions 17 appearing on the official document 15 are preferably black and in particular of color (or shade) different from the colors of the patterns of the semitransparent polychromatic images 25 covering them, so that the inscriptions are easily distinguished by naked eye (under illumination by a light source not visible in short and / or long ultraviolet light). In FIG. 4, the official document is observed under short ultraviolet light due to the non-visible light source. The image 5 (which represents for example a pattern such as a butterfly) is then observed. The image 5 which is seen under illumination by the light source emitting in the short ultraviolet range, emitting in particular at a wavelength of the order of 250 nm, is of very good quality and makes it possible to distinguish the details of the represented pattern and its different colors clearly. In particular, no light emission from the underlying image 9 disturbs the visualization of the image 5. In FIG. 5, the official document is observed under long ultraviolet light thanks to the source 22 of non-visible light. We then observe only the image 9 (which represents for example a pattern such as a flower). The image 9 that is seen under illumination by the light source 22 emitting in the long ultraviolet range, emitting in particular at a wavelength of the order of 365 nm, is of very good quality and makes it possible to distinguish the details of the represented pattern and its different colors clearly. EXAMPLE 1 A short ultraviolet and long ultraviolet transparent carrier film formed from polystyrene, as sold by the company VITASHEET GROUP (Italy) under the reference Robbex 515PRO, is chosen. On this support film is printed a protective polyurethane varnish implemented from an aqueous solution comprising a base of transfer varnish marketed by TIFLEX (France) under the reference 3X9426 @ and a hardener referenced 3X9427 @. The proportion of hardener added is 45 parts by volume per 100 parts by volume of the base. This printing is performed by serigraphic screen printing mesh 51 thread / cm so that the layer of protective varnish deposited has a thickness of between 10 ium and 20 ium. On this protective lacquer, a first image is printed using three different printing compositions, each of which is formulated from an ink base adapted to not filter ultraviolet light as a commercialized ink base. by the company TIFLEX (France) under the reference LG 111104 Solubilis®. The first printing composition comprises blue-colored fluorescent pigments as sold by MITSUBISHI CHEMICAL CORPORATION (Japan) under the reference KX-626A®. The second printing composition comprises red-colored fluorescent pigments as marketed by HONEYWELL under the reference Lumilux Red CD106®. The third printing composition comprises fluorescent pigments of green color as marketed by HONEYWELL under the reference Lumilux Green CD145®. It is for this first image of fluorescent pigments visible under short ultraviolet. The concentration of blue-colored fluorescent pigments in the first printing composition is 50% by weight relative to the total weight of the first printing composition. The concentration of red-colored fluorescent pigments in the second printing composition is 16.5% by weight relative to the total weight of the second printing composition. The concentration of green fluorescent pigments in the third printing composition is 15% by weight relative to the total weight of the third printing composition. Following the three printing layers forming the first visible image under short ultraviolet light, a polyurethane-based varnish comprising a varnish base as marketed by the company TIFLEX (France) under the reference 3Y0530 Varnish S3HN1® (product screen printing) and a catalyst as marketed by the company TIFLEX (France) under the reference 3X9096 @. The proportion of added catalyst is 53 parts by volume per 100 parts by volume of the base of varnish. The printing is performed by screen printing in mesh 77 threads / cm so that the layer of protective varnish deposited has a thickness of between 8 ium and 12 ium. This gives a layer of varnish filtering short ultraviolet. On this filter, a second image is printed using three different printing compositions. The first printing composition is a UVIPRIM® ink marketed by the company TIFLEX (France) under the reference 3Y1150 bleu®. The second printing composition is a UVIPRIM® ink marketed by the company TIFLEX (France) under the reference 3Y0742 rouge @. The third printing composition is a UVIPRIM® ink marketed by TIFLEX (France) under the reference 3Y0877 vert®. It is for this second image of fluorescent pigments visible under long ultraviolet. Each layer is allowed to dry between each print. A heat-sealable adhesive sold by the company TIFLEX is then deposited under the reference 3Y1836NF® (screen-printed product). Under illumination by a light source emitting in the short ultraviolet range at a wavelength of the order of 250 nm, only the first image is observed. Under illumination by a light source emitting in the long ultraviolet range at a wavelength of the order of 10 365 nm, only the second image is observed. The invention can be the subject of many variants. In particular, it is possible to provide an additional image comprising photoluminescent pigments invisible under light in visible light and visible under illumination by at least one infrared light source. 15
    权利要求:
    Claims (4)
    [0001]
    CLAIMS 1 / - Document (15), comprising: at least a first image (5) invisible under illumination in visible light and visible under illumination by at least a first source (20) of non-visible light emitting in the field of ultraviolet rays, said first image comprising at least one photoluminescent pigment under illumination by said first non-visible light source, characterized in that it further comprises: at least one second image (9) invisible under visible light and visible under illumination by at least one second source (22) of non-visible light emitting in the long ultraviolet range, said second image comprising at least one photoluminescent pigment under illumination by said second non-visible light source, - at least one layer, said layer (7) filter, superimposed on said second image (9) and comprising at least one material, said filter material, adapted to allow filtering the wavelengths emitted by said first source (20) of non-visible light, without preventing the display of the first image (5) under illumination by the first source (20) of light.
    [0002]
    2 / - Document according to claim 1, characterized in that said filter layer (7) is adapted to allow filtering wavelengths less than 300 nm, particularly wavelengths between 200 nm and 300 nm.
    [0003]
    3 / - Document according to one of claims 1 or 2, characterized in that said filter layer (7) is adapted not to block the wavelengths emitted by the second source (22) of non-visible light, in particularly wavelengths greater than 300 nm.
    [0004]
    4 / - Document according to one of claims 1 to 3, characterized in that said second image (9) is different from said first image (5) .- Document according to one of claims 1 to 4, characterized in that the second image (9) is at least partially superimposed on the first image (5). 6 / - Document according to one of claims 1 to 5, characterized in that said first image (5) and said second image (9) are polychromatic images. 7 / - Document according to one of claims 1 to 6, characterized in that each polychromatic image (5, 9) comprises a plurality of superimposed monochromatic printing layers (6a, 6b, 6c, 8a, 8b, 8e). 8 / - Document according to one of claims 1 to 7, characterized in that it comprises at least one security film, said security film incorporating at least said second image (9) and said layer (7) filter. 9 / - Document according to claim 8, characterized in that said security film covers at least a surface portion of said official document (15) and extends in a format adapted to the format of said surface portion. 10 / - Security film for protecting a document comprising: at least one first image (5) invisible under light in visible light and visible under illumination by at least a first source (20) 20 of non-visible light emitting in the field of short ultraviolet radiations, said first image comprising at least one photoluminescent pigment under illumination by said first non-visible light source, characterized in that it further comprises: at least one second image (9) invisible under visible light and visible under illumination by at least a second source (22) of non-visible light emitting in the long ultraviolet range, said second image comprising at least one photoluminescent pigment under illumination by said second non-visible light source, - at least one layer, said filtering layer (7) arranged opposite said second image and comprising at least one material, called filtering material, adapted to allow the wavelengths emitted by said first source (20) of non-visible light to be filtered, without preventing the first image (5) from being illuminated by the first source (20) of light. 11 / - Security film according to claim 10, characterized in that it comprises at least one support film (2) on which said first image (5) and said second image (9), said filtering layer (7 ) being disposed between said first image and said second image. 12 / - security film according to claim 10, characterized in that said filtering layer (7) forms a support film having a first face on which said first image (5) is disposed, and a second face, different from said first image (5), face, on which is disposed said second image (9). 13 / - security film according to one of claims 11 to 12, characterized in that said second image (9) is disposed above said first image (5) on said support film (2). 14 / - Security film according to one of claims 11 to 13, characterized in that said support film (2) is transparent. 15 / - security method for protecting at least one surface portion of a document (15), wherein: - said surface portion is applied to at least a first image (5) invisible under visible light and visible light under illumination by at least a first source (20) of non-visible light emitting in the short ultraviolet range, said first image comprising at least one photoluminescent pigment under illumination by said first non-visible light source, characterized in that: - applies on said surface portion at least a second image (9) invisible under illumination in visible light and visible under illumination by at least a second source (22) of non-visible light emitting in the long ultraviolet range, said second image comprising at least at least one photoluminescent pigment under illumination by said second non-visible light source, superimposed on said second image, a layer, said a filtering layer (7), comprising at least one material, called filtering material, adapted to allow filtering the wavelengths emitted by said first source (20) of non-visible light, without preventing the display of the first image (5); ) under illumination by the first source (20) of light. 16 / - Method according to claim 15, characterized in that the following steps are successively carried out: - the first image (5) is printed on a support film, - the filtering layer (7) is deposited on top of the first image, - the second image (9) is printed above the filter layer (7), - an adhesive layer (10) is deposited on top of the second image (9). 17 / - Method according to one of claims 15 and 16, characterized in that, to apply each image (5, 9), is printed a plurality of printing layers (6a, 6b, 6c, 8a, 8b, 8c ) monochromatic superimposed so that, in the order of reception of the illumination light, they are in the order blue, red, green filtering wavelengths and emission peaks of photoluminescent pigments. 18 / - Method according to one of claims 15 to 17, characterized in that each image (5, 9) is printed with the aid of a printing composition (6a, 6b, 6c, 8a, 8b, 8c) adapted to be transparent or translucent, at least after drying, under visible light. 19 / - Method according to one of claims 15 to 18, characterized in that prints each image (5, 9) by a technique selected from screen printing, flexography, offset and gravure.
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    同族专利:
    公开号 | 公开日
    WO2015144646A1|2015-10-01|
    US10293629B2|2019-05-21|
    CA2941531A1|2015-10-01|
    EP3122569A1|2017-02-01|
    US20170106691A1|2017-04-20|
    FR3018730B1|2017-03-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2000024587A1|1998-10-23|2000-05-04|Trantoul Francois|Method for producing a particular photoluminescent polychromatic printed image, resulting image and uses|
    WO2003036595A2|2001-09-21|2003-05-01|Trantoul Francois|Anti-counterfeiting marker for fixing variable indicia|
    EP2075767A1|2007-12-27|2009-07-01|Banque Nationale de Belgique|Two-layer anti-counterfeiting device|
    WO2013020983A1|2011-08-08|2013-02-14|Banque De France|Moving luminescent security device for a document, and corresponding detection method and detection device|FR3070168A1|2017-08-21|2019-02-22|Anne-Lise Bue|METHOD FOR PRINTING AN IMAGE ON A GUIDE SUPPORT FOR EMBROIDERY|FR2834484B1|2002-01-09|2004-09-03|Francois Trantoul|METHOD FOR PRODUCING A TRANSPARENT TRANSFERABLE SECURITY FILM PROTECTIVE DEVICE WITH SHORT ULTRAVIOLET|FR3045907B1|2015-12-18|2019-11-22|Oberthur Fiduciaire Sas|SECURITY ELEMENT HAVING HIDDEN INFORMATION, DOCUMENT-VALUE THAT INCLUDES IT AND DEVICE FOR VERIFYING THIS HIDDEN INFORMATION|
    DE102017004039B4|2017-04-26|2019-06-06|Mühlbauer Gmbh & Co. Kg|Security deposit for a document of identification and method for producing a security deposit for a document of identification|
    EP3814245A4|2018-06-27|2022-01-26|Hewlett Packard Development Co|Enhanced late point feature differentiation|
    US11230136B1|2021-05-10|2022-01-25|Nu Pagamentos S.A.|Container for payment cards with hidden features|
    法律状态:
    2016-03-28| PLFP| Fee payment|Year of fee payment: 3 |
    2017-03-27| PLFP| Fee payment|Year of fee payment: 4 |
    2018-03-26| PLFP| Fee payment|Year of fee payment: 5 |
    2019-03-25| PLFP| Fee payment|Year of fee payment: 6 |
    2020-03-25| PLFP| Fee payment|Year of fee payment: 7 |
    2021-03-25| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1452465A|FR3018730B1|2014-03-24|2014-03-24|DOCUMENT COMPRISING AT LEAST TWO PHOTOLUMINESCENT IMAGES, SECURITY FILM AND SECURITY PROTECTION METHOD|FR1452465A| FR3018730B1|2014-03-24|2014-03-24|DOCUMENT COMPRISING AT LEAST TWO PHOTOLUMINESCENT IMAGES, SECURITY FILM AND SECURITY PROTECTION METHOD|
    EP15714439.5A| EP3122569A1|2014-03-24|2015-03-23|Document comprising at least two photoluminescent images, security film and protective security method|
    CA2941531A| CA2941531A1|2014-03-24|2015-03-23|Document comprising at least two photoluminescent images, security film and protective security method|
    PCT/EP2015/056141| WO2015144646A1|2014-03-24|2015-03-23|Document comprising at least two photoluminescent images, security film and protective security method|
    US15/128,538| US10293629B2|2014-03-24|2015-03-23|Document comprising at least two photoluminescent images, security film and protective security method|
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