EP1951957A1 - Structure comportant un substrat en matiere fibreuse et procede pour authentifier et/ou identifier une telle structure - Google Patents
Structure comportant un substrat en matiere fibreuse et procede pour authentifier et/ou identifier une telle structureInfo
- Publication number
- EP1951957A1 EP1951957A1 EP06808334A EP06808334A EP1951957A1 EP 1951957 A1 EP1951957 A1 EP 1951957A1 EP 06808334 A EP06808334 A EP 06808334A EP 06808334 A EP06808334 A EP 06808334A EP 1951957 A1 EP1951957 A1 EP 1951957A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heterogeneities
- substrate
- surface layer
- spatial
- structure according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/373—Metallic materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/29—Securities; Bank notes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/355—Security threads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/369—Magnetised or magnetisable materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
- D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
- D21H21/48—Elements suited for physical verification, e.g. by irradiation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
- G06K19/083—Constructional details
- G06K19/086—Constructional details with markings consisting of randomly placed or oriented elements, the randomness of the elements being useable for generating a unique identifying signature of the record carrier, e.g. randomly placed magnetic fibers or magnetic particles in the body of a credit card
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/004—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using digital security elements, e.g. information coded on a magnetic thread or strip
- G07D7/0043—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using digital security elements, e.g. information coded on a magnetic thread or strip using barcodes
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/004—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using digital security elements, e.g. information coded on a magnetic thread or strip
- G07D7/0047—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using digital security elements, e.g. information coded on a magnetic thread or strip using checkcodes, e.g. coded numbers derived from serial number and denomination
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/20—Testing patterns thereon
- G07D7/202—Testing patterns thereon using pattern matching
- G07D7/2033—Matching unique patterns, i.e. patterns that are unique to each individual paper
Definitions
- Structure comprising a fibrous substrate and method for authenticating and / or identifying such a structure
- the present invention particularly relates to a structure comprising a substrate of fibrous material and a method for authenticating and / or identifying this structure.
- the patent application FR 2 804 784 discloses an identification element made of a transparent curable resin incorporating randomly dispersed gas bubbles within the identification element. The gas may optionally be colored in order to increase the contrast between the bubbles and the remainder of the identification element.
- This identification element requires the implementation of a specific manufacturing process that is only suitable for certain types of materials.
- Patent FR 2 425 937 also discloses a fibrous structure containing metal fibers.
- a signature formed by the metal fibers dispersed in the fibrous structure is used, for example by relying on the nature, size, concentration and spatial location of the metal fibers (three-dimensional distribution ).
- This signature of the metal fibers can be measured for example by a suitable detection system in response to a magnetic excitation.
- the fibers take an orientation and a distribution on which depends in particular the epair and the optical properties of the sheet.
- the manufacturer generally seeks to make the distribution of fibers homogeneous to create what is called a melted epair.
- the presence of air bubbles is usually considered a defect, these air bubbles causing, during the formation of the sheet, surface irregularities and / or the presence of microscopic holes in the sheet. These defects are visible in transmission, by transparency, because they locally generate a lower density of material.
- the manufacturer may also be required to deposit on the surface of the paper sheet one or more non-fibrous surface layers, especially based on binder, providing printability characteristics and / or specific properties.
- air bubbles present in these layers create defects called "needle holes” causing visible light spots, especially in transmitted light.
- Devices for removing air bubbles before they reach the formation zone of the paper layer have been developed.
- the papermaking machines are in particular equipped with deaeration circuits of the dough in order to limit the air bubbles.
- the invention aims to propose a new means of authentication and / or identification.
- the subject of the present invention is thus, according to one of its aspects, a structure comprising: at least one fibrous material substrate, optionally at least one surface layer, in particular based on a binder, deposited on one side of the substrate, a plurality of heterogeneities of the substrate and / or of the possible surface layer, dispersed, in particular randomly, within the substrate and / or the optional surface layer, at least one authentication information and / or identification related to at least one spatial and / or physical feature of at least a portion of said heterogeneities.
- heterogeneities according to the invention are in particular different from heterogeneities due to the possible use of different solid material (s).
- This or these materials are for example fibers, particles or boards.
- the heterogeneities may, if necessary, be different from a watermark.
- the "pulsed" injection then generates fields of heterogeneity, these fields being spaced from each other with a given, non-random pitch. However, within fields, the distribution of heterogeneities is random.
- At least some heterogeneities of the fibrous substrate and / or the surface layer can be used to form a signature, including a three-dimensional signature, associated with the structure.
- the signature of the structure related to the position, the frequency, the density of the heterogeneities and, if appropriate, the shape, the nature of the heterogeneities is then unique in a given inspection area of the structure.
- the authentication and / or identification information may be used, where appropriate, to establish a unique or one-to-one relationship between the structure and data on the structure.
- Heterogeneities may be used for first-level authentication (with the naked eye), where the three-dimensional signature related to spatial and / or physical characteristics may constitute a third-level identification element (detectable with a suitable detector ).
- heterogeneities can be used to prevent forgery.
- mechanical scraping of printouts may result in a change in spatial and / or physical characteristics in the scraped area.
- the invention thus makes it possible to improve the protection of the structure against an attempt at falsification and / or counterfeiting.
- the heterogeneities are generated during the wet phase formation of the fibrous substrate and correspond to fluctuations in the mass density of the substrate.
- These mass density fluctuations can in particular be caused by the injection of gas in the wet phase, during the formation of the substrate, and create fluctuations in the optical characteristic of the substrate.
- the heterogeneities may have a density lower than that of the rest of the substrate and form visible light spots in transmitted light.
- the heterogeneities may, if desired, be invisible to the naked eye and be detectable only with the aid of a suitable detector such as a microscope.
- the heterogeneities may, if appropriate, be dispersed in a preferred manner in a defined area of the substrate, in particular an area delimited by a watermark, for example by injecting one or more gases through small orifices made for example on punches serving to form the watermark, fixed on the rotating canvas cylinder of the paper machine.
- the heterogeneities within this layer are in particular generated during the coating of the surface layer on the previously formed substrate, the heterogeneities corresponding to fluctuations in the mass density in the surface layer.
- These fluctuations in mass density can be caused for example by a degassing of gas trapped in the substrate during drying, the gas or gases emitted by the substrate entering the surface layer, or by the voluntary injection of gas in the still wet surface layer, before or during its coating on the substrate.
- These heterogeneities in the surface layer generate optical characteristic fluctuations.
- the surface layer may in particular be based on binder, being advantageously arranged to confer on the structure characteristics of printability and / or specific properties such as a variable optical effect.
- the surface layer may be different from a varnish.
- the surface layer may in particular be a composition comprising coating or surfacing pigments and at least one binder.
- pigments it may be natural or synthetic mineral pigments, in particular kaolin and / or calcium carbonate and / or silica, optionally pyrogenic and / or an optionally pyrogenic titanium dioxide or iridescent pigments, especially of mica-titanium type or plastic pigments, for example hollow plastic microspheres based on styrene polymer including styrene-acrylic, in particular the average diameter of the microspheres is between 0.5 mm and 1.0 mm.
- mineral pigments in particular kaolin and / or calcium carbonate and / or silica
- optionally pyrogenic and / or an optionally pyrogenic titanium dioxide or iridescent pigments especially of mica-titanium type or plastic pigments, for example hollow plastic microspheres based on styrene polymer including styrene-acrylic, in particular the average diameter of the microspheres is between 0.5 mm and 1.0 mm.
- This layer comprises at least one binder, in particular a starch or synthetic binders commonly used in paper milling, as well as any additives commonly employed by those skilled in the art whose function is to improve the rheological properties of the sauce. sleeping and confer special properties to the diaper.
- the weight of the layer may be from 2 to 50 g / m 2 on one or each face, that is to say including surfacing having a layer weight of between 2 and 10 g / m 2 .
- the pigmented layer comprises from 70 to
- the surface layer is at least translucent and comprises 30 to 50 parts by dry weight of fumed silica and 50 to 70 parts by dry weight of an elastomeric binder, in particular a polyurethane, the sum of the parts of these components making 100 in total, the weight of the deposited layer is between 1 and 15 g / m 2 per lane dry, preferably between 1 and 10 g / m 2 per side, more preferably between 2 and 7 g / m 2 per side in dry.
- the layer may comprise other dispersant additives, viscosity modifiers, plasticizers, bacteriostatic agents, fungicides for example. It can not be ruled out that it includes other authentication or tampering agents.
- the gas (s) used may be chosen so as to interact with one or more reactive zones of the substrate and / or of the possible surface layer in order to create an optical and / or physical modification at the level of the heterogeneities.
- the modification may correspond for example to the formation of a colored spot at a level of heterogeneity.
- At least one of the heterogeneities, in particular a majority of them, may each have an area of less than 10 mm 2 , for example between 0.01 mm 2 and 10 mm 2 , in particular between 0.2 mm 2 and 5 mm 2 .
- the heterogeneities may have, at least for a predefined area of the structure, a density of between 1 and 100 heterogeneities per cm 2 , in particular between 5 and 50 per cm 2 , for example between 10 and 20 per cm 2 .
- the structure comprises security elements different from the heterogeneities, arranged to define another signature of the structure, different from the signature related to the heterogeneities.
- These security elements comprise, for example, particles, fibers such as magnetic fibers, or boards, and are in particular dispersed randomly in at least one area of the structure.
- the identification of the structure can thus be based on at least two distinct signatures.
- the structure comprises at least one security element, in particular a plurality of security elements, comprising, for example, fibers such as magnetic fibers, this or these security elements being arranged to form a prior security to access the verification of the signature related to heterogeneities. It is thus possible to create a structure with cascading security features.
- the spatial and / or physical characteristics relating to the heterogeneities are in particular measured in a predefined zone of the structure, with suitable sensors, the measurements advantageously making it possible to define a signature three-dimensional structure in said area. This signature can be stored on the structure alternatively or separately from it.
- the authentication and / or identification information contains the spatial and / or physical characteristics relating to the heterogeneities.
- the information can be stored on the structure and, therefore, it is not necessary to recover, during the authentication and / or identification process, information stored separately from the structure.
- the authentication and / or identification information does not contain the spatial and / or physical characteristics, but in particular comprises an identifier, this identifier being stored on the structure.
- This identifier makes it possible to recover the spatial and / or physical characteristics relating to the heterogeneities stored on an information medium that is distinct from the structure.
- This implementation of the invention has the advantage of requiring less memory capacity on the structure.
- the spatial and / or physical characteristics can be stored for example in a database of a system capable of delivering, on demand, by means of the identifier, data to a terminal such as a mobile phone or a computer, via in particular a computer network, for example the Internet network.
- a terminal such as a mobile phone or a computer
- a computer network for example the Internet network.
- the identifier for recovering the spatial and / or physical characteristics may comprise for example at least one element of information usually present on the structure, such as an element of the civil status of an individual (surname, first name,. ..) an identity document or a serial number of a bank note, for example.
- the identifier can be directly apprehensible or not. It may for example be stored via an alphanumeric sequence, encrypted or not, a barcode, possibly a matrix barcode, in particular printed on the structure, a magnetic strip, an electronic device comprising in particular an electronic chip, or an optical memory .
- a spatial feature may relate to the layout, orientation, frequency, shape, size or density per unit area of a plurality heterogeneities.
- a physical characteristic may correspond to the nature of the heterogeneities, and in particular to an optical (for example brightness), electrical, electromagnetic, thermal or acoustic characteristic related to a plurality of heterogeneities.
- the authentication and / or identification information may, if desired, contain or, alternatively, serve to recover for example an image of at least part of the heterogeneities of the structure.
- the image may for example be a digital image.
- the identification of a signature may be related to optical type characteristics.
- the identification may be of thermal or electrical type, or be based on mass density variations caused by heterogeneities.
- the authentication and / or the identification of the structure may comprise the step of comparison, automatic or otherwise, of this image with the heterogeneities present within the structure, in particular with the naked eye or with the aid of a suitable device, for example a camera.
- the spatial and / or physical characteristics may correspond, for example, to the average optical density of a plurality of heterogeneities.
- the authentication and / or identification information contains the spatial and / or physical characteristics
- this information is preferably not directly apprehensible, the information being in particular encrypted and / or stored in a form requiring reading at the same time. using a suitable reading device.
- the structure comprises at least one apparent mention.
- the apparent mention includes for example at least one element of the civil status of an individual, including the surname, first name and nationality, and / or a biometric parameter for example the size, weight and color of the hair or hair. eyes.
- the apparent mention may include, where appropriate, an image, for example a photo ID.
- the apparent mention may include for example a serial number.
- the structure comprises at least one information medium capable of containing the authentication and / or identification information and, where appropriate, in combination, also at least one piece of information representative of at least one apparent mention appearing on the structure.
- the information carrier may comprise for example at least one bar code, possibly matrix, a magnetic tape, and an electronic device, in particular an electronic chip, an optical memory, this list not being limiting.
- the bar code can be printed.
- the authentication and / or identification information and the information representative of at least one apparent mention are not directly apprehensible.
- the authentication and / or identification information does not directly contain the spatial and / or physical characteristic, the latter being contained in a carrier of information distinct from the structure, the information representative of the apparent mention is preferably also contained in this information carrier separate from the structure.
- the authentication and / or the identification of the structure may comprise, on the one hand, the verification of the correspondence between the heterogeneities of the structure and the spatial and / or physical characteristic obtained by the authentication information and / or identification and, secondly, the verification of the correspondence between one or more apparent indications of the structure with the information representative of this or these apparent mentions.
- the heterogeneities are dispersed substantially uniformly over the entire surface of the fibrous layer.
- the structure comprises one or more fields of heterogeneities, having, for example, different spatial and / or physical characteristics.
- the density number of heterogeneities per unit of surface
- the density is greater, for example at least two times greater, or even at least five times, than that of areas of the fibrous layer outside said field.
- the structure may comprise at least one tracking system arranged to identify, among all the heterogeneities, a subset of heterogeneities used to determine the predetermined spatial and / or physical characteristic.
- This marking system may comprise for example a plurality of markers for delimiting an inspection area containing the subset of heterogeneities, these marks may or may not be visible in visible light.
- At least one of these marks may comprise, for example, a mark whose shape, dimensions and / or color may be chosen to contribute to the aesthetics of the structure.
- the marking system may comprise for example at least three non-aligned marks.
- At least one of the marks may have, for example, a substantially circular, rectangular, triangular or star shape, this list not being limiting.
- At least one of these marks is printed.
- the mark or marks may be constituted by elements usually present on the structure.
- the mark or marks may be constituted for example by elements of the image.
- the inspection zone containing the subset of heterogeneities delimited by the registration system may for example have a substantially circular, rectangular or triangular shape, this list not being limiting.
- the spatial and / or physical characteristic is obtained from all the heterogeneities of the structure, the outlines of the document then being able to delimit the inspection zone.
- the substrate is a paper layer.
- the invention further relates, in another of its aspects, a document, including security and / or value, incorporating a structure as defined above.
- the document may be for example one of the following: a bank note, a security paper, an identity document, a leaflet or a passport cover, a visa, a coupon, a document of value other than a bank note, for example a check or a credit card, a protection and / or authentication label, a traceability label.
- the invention further relates, in another of its aspects, a packaging device, including a package, incorporating a structure as defined above.
- the packaging device may in particular be intended for packaging one or more pharmaceutical specialties, and for example comprising a blister.
- the subject of the invention is, according to another of its aspects, a sheet material comprising: at least one fibrous material substrate, optionally at least one surface layer, in particular based on a binder, deposited on one side of the substrate, a plurality of heterogeneities of the substrate and / or of the possible surface layer, dispersed, in particular randomly, within the substrate and / or the possible surface layer.
- sheet material may refer to a sheet of paper having a monolayer or multilayer structure.
- a sheet material may for example have a relatively small thickness, especially less than or equal to 3 mm, for example equal to about 100 microns, and be flexible.
- the sheet material can be packaged in a reel, especially before being cut to the desired format.
- the invention further relates, according to another of its aspects, to a method of manufacturing a structure comprising a fibrous material substrate, the method comprising the following steps: forming the substrate in contact with a forming surface, for example a surface defined by a web, for example a surface immersed in a suspension of fibrous material, allowing the formation of gas bubbles, in particular air bubbles, in the suspension of fibrous material, so as to form heterogeneities within the substrate, the bubbles coming for example from a gas inlet in the suspension of fibrous material.
- a forming surface for example a surface defined by a web, for example a surface immersed in a suspension of fibrous material
- gas bubbles in particular air bubbles
- the subject of the invention is also a method of manufacturing a structure comprising a substrate made of fibrous material and a surface layer, for example based on a binder, the process comprising the following steps: forming the substrate in contact with a forming surface, for example a surface immersed in a suspension of fibrous material, depositing, in particular by coating, the surface layer on one side of the substrate allowing the formation of gas bubbles, in particular bubbles of air, in the surface layer, so as to form bubbles within the surface layer of heterogeneities, for example from a gas inlet in a bath of a material intended to form the surface layer.
- a forming surface for example a surface immersed in a suspension of fibrous material
- depositing, in particular by coating, the surface layer on one side of the substrate allowing the formation of gas bubbles, in particular bubbles of air, in the surface layer, so as to form bubbles within the surface layer of heterogeneities, for example from a gas inlet in a bath of a material intended to form the surface
- the subject of the invention is also a method of manufacturing a structure comprising a substrate made of fibrous material and a surface layer, for example based on a binder, the process comprising the following steps: forming the substrate in contact with a forming surface, for example a surface immersed in a suspension of fibrous material, the substrate notably having a high porosity and containing a trapped gas such as air, depositing, in particular by coating, the layer surface, by allowing the formation of gas bubbles, in particular air bubbles, in the surface layer, by promoting the degassing of the substrate in the surface layer, especially during the drying of the surface layer, so as to form within it heterogeneities.
- the bubbles can be formed by the injection of one or more gases and the size and / or shape of the heterogeneities can be controlled, in particular by selecting the nature of the gas or gases used. , their flow rate and / or the injection mode. It is for example possible to use different gases to form heterogeneities of various sizes and / or shapes.
- the following steps are carried out: optionally, delimiting an inspection zone using at least one marker, which may or may not be intrinsic to the substrate or the surface layer, - acquiring at least one spatial and / or physical characteristic of at least part of the heterogeneities, in particular those dispersed in the eventual inspection zone, providing the structure with at least one authentication and / or identification information relating to said less a spatial and / or physical characteristic.
- the acquisition of said spatial and / or physical characteristic can be carried out by at least one of the following methods or a combination of at least two of the following methods: image analysis, in visible or non-visible light, for example in light infrared or ultraviolet, in particular by detecting luminosity differences in transvision or by detection of the optical density or absorption of a visible or non-visible wave, capacitive analysis, ultrasonic analysis, thermal excitation analysis, heat capacity analysis, this list not being limiting.
- the methods for acquiring and processing the spatial and / or physical characteristics of the heterogeneities in an inspection zone may be based on: - an optical detection carried out with one or more sensors followed by an analysis of the received signal.
- This optical detection can be based in particular on a difference in brightness under visible light heterogeneities, detectable in transvision with a CCD or CMOS camera, on a detection of the response provided by the heterogeneities in the inspection zone under or following a solicitation thermal, electrical, electromagnetic or acoustic.
- This detection can be based in particular on: the specific absorption of a visible or non-visible wave, a specific capacitance, a specific thermal absorption, a specific transmission of IR radiation, - an acoustic modification, related to the heterogeneities in the inspection zone.
- One of the heterogeneities may not be visible to the naked eye (for example if the heterogeneity is defined by a cavity created inside the paper substrate with a laser).
- the identification can be carried out with the aid of several sensors and a movement of the latter with respect to the substrate during the identification process makes it possible to scan the inspection zone.
- the following steps are implemented: provide the structure with at least one apparent mention, and - either write on the structure said authentication and / or identification information and information representative of said apparent mention so as to: not directly apprehensible, for example in an encrypted manner, possibly in an electronic memory or in a magnetic medium, or write on a support of information distinct from the structure said at least one spatial and / or physical characteristic and information representative of said mention related.
- the subject of the invention is also a method of authentication and / or identification of a structure, the structure comprising: a substrate made of fibrous material, - optionally a surface layer deposited on a surface substrate face, a plurality of heterogeneities of the substrate and / or of the possible surface layer, dispersed, in particular randomly, within the substrate and / or the optional surface layer, at least one authentication information and or identification having a link with at least one spatial and / or physical characteristic of at least part of said heterogeneities, the method comprising the following steps: read the authentication and / or identification information, compare the at least one spatial and / or physical characteristic having a link with the authentication and / or identification information, with at least one spatial characteristic and / or or physical obtained from the structure, - conclude as to the authenticity and / or identity of the structure at least through the comparison.
- the structure comprises at least one apparent mention.
- information representative of the apparent mention as well as the authentication and / or identification information are written on the structure itself, preferably not directly apprehensible, in particular in an encrypted manner, for example stored in an electronic chip or an optical memory.
- this information is written on an information medium that is distinct from the structure, for example an electronic memory, a magnetic strip or disk, or an optical disk.
- the method preferably comprises the following steps: comparing information representative of the apparent mention with the apparent mention itself, appearing on the structure, concluding on the authenticity and / or the identity of the structure at least through the comparison .
- FIGS. 1 and 2 represent , schematically and partially, structures respectively complying with two examples of implementation of the invention
- Figure 3 shows, schematically and partially, a bar code used in a structure according to the invention
- Figure 4 shows, schematically and partially, a step of manufacturing a fibrous layer of a structure according to the invention
- - Figures 5 to 7 show, schematically and partially, structures respectively conform to three other examples of implementation of the invention
- FIG. 8 schematically illustrates, in section, a structure according to an embodiment of the invention, comprising a surface layer
- FIG. 1 and 2 represent , schematically and partially, structures respectively complying with two examples of implementation of the invention
- Figure 3 shows, schematically and partially, a bar code used in a structure according to the invention
- Figure 4 shows, schematically and partially, a step of manufacturing a fibrous layer of a structure according to the invention
- - Figures 5 to 7 show, schematically and partially, structures respectively conform to three other examples of implementation of the invention
- FIG. 8 schematically illustrates
- FIG. 10 illustrates, schematically and partially, a step of retrieving information for authenticating and / or identifying a structure according to the invention
- FIGS. 11 and 12 are two block diagrams illustrating different respective steps of two authentication and / or identification methods according to the invention.
- FIG. 1 shows a structure 1 comprising a substrate 2 according to the invention.
- the substrate 2 is a fibrous layer formed using a round-shaped papermaking machine 20, as illustrated in FIG. 4.
- the substrate 2 could be formed differently, in contact with each other. a forming surface defined by a web, not immersed for example.
- the machine 20 comprises a tank 21 containing a suspension 23 of fibers, for example of cellulose fibers and / or cotton linters and / or synthetic and / or artificial fibers, in which is partially immersed a rotating roll cylinder 22 defining a surface 24 in contact with which the fibrous layer 2 is continuously formed.
- a suspension 23 of fibers for example of cellulose fibers and / or cotton linters and / or synthetic and / or artificial fibers
- a conduit 25 is provided to generate an air inlet within the fiber suspension 23 to form air bubbles 26.
- the air inlet can be arranged in the part of the suspension 23 where the cylinder 22 plunges, before the formation of the fibrous layer, or in the portion of the suspension 23 where the cylinder 22 spring (see Figure 4). These latter create within the fibrous layer 2 heterogeneities 3, as illustrated very schematically in FIG.
- heterogeneities 3 may be formed by any other appropriate means, in particular depending on the method of manufacturing the substrate 2.
- the substrate 2 can for example be built on a flatbed machine.
- the substrate 2 comprises two jets of paper, the heterogeneities 3 being created between the jets of paper still wet with a spray.
- the substrate 2 is made from paper fibers.
- the substrate 2 may comprise fibers of different natures, for example metal and / or magnetic fibers.
- the heterogeneities 3 according to the invention are not constituted by the magnetic fibers.
- Each heterogeneity 3 corresponds to a clear spot visible by transparency, in transmitted light, having a mass density lower than that of the rest of the substrate 2.
- the position, the orientation, the frequency, the density and / or the shape of the heterogeneities 3 can be controlled by choosing the air injection system and / or by regulating, for example, the flow rate of the air leak in the fiber suspension 23.
- Heterogeneities 3 may have an average size for example of between 0.01 mm 2 and 10 mm 2 , in particular between 0.2 mm 2 and 5 mm 2 .
- the heterogeneities 3 may have, at least for a predefined zone, a density of between 1 and 100 heterogeneities per cm 2 , in particular between 5 and 50, for example between 10 and 20 per cm 2 .
- the heterogeneities 3 can be distributed within the substrate 2 in a substantially uniform manner, as illustrated in FIG.
- the heterogeneities 3 form within the substrate 2 one or more fields whose density (number of heterogeneities per unit area) is greater, for example at least twice as high, or even less than five times that of areas outside the (x) field (s) 5.
- the gas or gases used to form the heterogeneities 3 may be chosen to interact with one or more reactive zones of the substrate 2 in order to create an optical and / or physical modification at the level of the heterogeneities 3.
- some heterogeneities 3 may appear with a first color and others with a second color, different from the first.
- the heterogeneities 3 may be dispersed in a privileged manner in a zone defined by a watermark 19.
- These heterogeneities 3 can in particular be formed by injecting one or more gases through small orifices 28 made on punches 29 serving to form the watermark 19, fixed on the rotating roll cylinder 22 of the papermaking machine, as illustrated in FIG. 9.
- the heterogeneities 3 form a unique signature associated with the substrate 2. After the manufacture of the substrate 2, the acquisition of at least one spatial and / or physical characteristic representative of at least part of the heterogeneities 3.
- this characteristic is determined by taking into account all the heterogeneities 3 of the substrate 2. As a variant, this characteristic is determined for a subset of heterogeneities 3.
- the structure 1 may comprise a tracking system 7 making it possible to identify, among all the heterogeneities 3, a subset 8 of heterogeneities 3 used to determine the spatial and / or physical characteristic.
- the marking system 7 can comprise a plurality of markers 9 constituted, in the example described, each by a mark on one side of the substrate 2.
- the pins 9 can be made in different ways.
- At least one of the pins 9 is printed on the substrate 2.
- At least one of the markers 9 may consist of an element bonded to the substrate 2.
- each mark 9 is a circular point.
- the marks 9 may have a rectangular shape, triangular, star or other.
- the pins 9 are three in number and not aligned in the examples described.
- the registration system 7 may define an inspection zone containing the subset 8 of heterogeneities 3, having a triangular shape, as illustrated in Figures I and 5.
- the registration system 7 may define an inspection area containing the subset 8 having a different shape, for example rectangular or circular. Acquisition of the spatial and / or physical characteristic in the inspection area may be achieved by at least one of the following methods or a combination of at least two of the following methods: image analysis, visible light or no, for example in infrared or ultraviolet light, in particular by detection of luminosity differences in transvision or by detection of optical density or absorption of a visible or non-visible wave, capacitive analysis, ultrasonic analysis, thermal excitation analysis, heat capacity analysis, this list not being limiting.
- the capacitive analysis can for example be performed using capacitive sensors, possibly arranged in a matrix form.
- the spatial and / or physical characteristic can be determined, if necessary, by an analysis of a signal under or following a thermal, electrical, electromagnetic or acoustic stress.
- the optical analysis can be done by analyzing the image obtained in transvision with a CCD or CMOS camera.
- the acoustic analysis can be done for example by analyzing the acoustic attenuation related to heterogeneities when the inspection area is subjected to an ultrasonic wave.
- the spatial and / or physical characteristic may be relative to the layout, size or density per unit area of a plurality of heterogeneities or may correspond to an optical, electrical, electromagnetic, thermal or acoustic characteristic related to a plurality of heterogeneities.
- the spatial and / or physical characteristic is, for example, an optical image of a field of heterogeneities.
- Structure 1 may have visible indications 30.
- the structure 1 forms an identity document and the apparent mentions include elements on the civil status of an individual (surname, first name, nationality, etc.) and on biometric elements relating to him. (size, weight, color of hair and eyes, ).
- the apparent indications 30 are printed on the substrate 2.
- the apparent mentions may comprise for example an image 31 of a portrait of an individual.
- the image 31 may be printed on the substrate 2 or, alternatively, be constituted by a photograph attached thereto.
- the structure 1 may comprise an information carrier 35 on which are stored in encrypted manner at least one authentication and / or identification information containing the spatial and / or physical characteristic of a part of the heterogeneities 3, and at least information representative of at least one apparent mention 30, 31.
- the information carrier 35 may for example comprise a bar code 36 in particular printed on the substrate 2, as shown in FIG. 1.
- the bar code 36 in the example of FIG. 1 is of unidirectional type.
- the information medium 35 may comprise a matrix bar code 36 ', for example known under the name PDF 417, as illustrated in FIG. 3, making it possible to store a relatively large amount of information.
- the information carrier 35 may be an element other than a bar code.
- the information carrier 35 comprises an electronic device 37, comprising, for example, an electronic chip capable of storing data in encrypted form.
- This electronic device 37 may for example be embedded in the substrate 2.
- the electronic device 37 may be arranged, if necessary, to store information concerning, for example, a person and to control, on demand, the spatial and / or physical characteristics. heterogeneities in the inspection area, this control serving as a key to authenticate the electronic device before starting an information exchange. This type of device is described for example in application WO 2004/012228.
- the information carrier 35 may alternatively comprise a magnetic tape.
- the information carrier 35 for example the bar code 36 ', can be arranged to be able to memorize an image of at least a part of the heterogeneities 3, this image containing the spatial and / or physical characteristic.
- Authentication and / or identification of the structure 1 can be performed as follows.
- the reading and the decryption of the information can be carried out using a suitable reading device, for example of the optical type.
- the spatial and / or physical characteristic read on the information medium 35 is compared, automatically or not, with a spatial and / or physical characteristic of the substrate 2.
- the information medium 35 stores an image that is supposed to represent at least an area of the substrate 2, the aforementioned comparison is made for example between this image and the substrate 2 observed for example by transparency, in transmitted light.
- the representative information of the apparent mention (s) is compared with the apparent information appearing on the structure 1 (step 51 of FIG. 12).
- the information representative of the spatial and / or physical characteristic and at least one apparent mention are not stored on the structure 1 itself, being stored on a support of 40 information separate from the structure 1, as shown in Figure 10.
- This information carrier 40 may for example be constituted by a database of a computer system.
- the structure 1 comprises an authentication and / or identification information item 38 such as an identifier, making it possible to retrieve information associated with the structure 1 stored on the support device. information using a terminal 41 such as a mobile phone.
- the identifier 38 may comprise for example a series of alphanumeric characters and be visible on one face of the structure 1.
- the identifier 38 may for example be printed on the structure 1.
- the identifier 38 may be stored for example on an information medium such as a barcode or an electronic device.
- the terminal 41 can be connected to the database 40 by a wired or non-wired link.
- Structure 1 may be devoid of identifier 38, information usually included in structure 1 such as elements of the civil status of an individual that can be used to retrieve information useful for authentication and / or identification .
- Authentication and / or identification can be performed as follows.
- a user can transmit, using the terminal 41, the identifier 38 to the system comprising the database 40 which, in return, sends to the terminal 41 the aforementioned information, comprising by example an image 42 of a field of heterogeneities.
- the retrieved information is compared to the information in Structure 1 (step 57 of Figure 11) and thus concludes on the authenticity of the structure 1
- the structure 1 forms an identity document, such as an identity card.
- the document may alternatively be one of the following: a bank note, security paper, passport slip or cover, a visa, a coupon, a valuable document other than a bank note, by example a check or a credit card, a label of protection and / or authentication, a label of traceability.
- the structure 1 may comprise at least one of the following security elements: an element for highlighting a falsification, in particular visible and / or detectable by means of a specific detection device, an optical effect element variable and / or diffractive, interferential, iridescent or liquid crystal, a magnetic or crystalline coating, magnetic fibers, tracers detectable by magnetic resonance, tracers detectable by X-ray fluorescence, fibers detectable under UV radiation, elements detectable under radiation micro-wave, bio-markers, particularly
- DNA DNA, a varnish or an ink, optical filters, luminescent or fluorescent tracers, photochromic, thermochromic, electroluminescent and / or piezochromic compounds and / or which change color in contact with one or more predetermined products.
- the structure 1 may comprise, if desired, security elements 15 arranged to define a signature of the structure, different from the signature related to the heterogeneities 3.
- security elements 15 comprise, for example, fibers such as magnetic fibers dispersed randomly within the structure 1, as illustrated in FIG. 5.
- the identification of the structure can thus be based on at least two distinct signatures.
- the heterogeneities 3 can be generated in a surface layer 39 during the coating of the surface layer on the previously formed substrate 2, the heterogeneities corresponding to fluctuations in the mass density in the layer 39
- These fluctuations in the specific gravity can be caused for example by a degassing of gases trapped in the substrate 2 during drying, the gases emitted by the substrate penetrating into the surface layer, or, alternatively, by the voluntary injection of gas in the surface layer 39 still wet, before or during its coating on the substrate.
- These heterogeneities in the surface layer 39 cause fluctuations in optical density.
- the surface layer 39 may comprise a binder, for example based on a polymer or copolymer, for example a styrene butadiene polymer, making it possible to confer on the structure 1 printability characteristics and / or specific properties such as a variable optical effect.
- a binder for example based on a polymer or copolymer, for example a styrene butadiene polymer, making it possible to confer on the structure 1 printability characteristics and / or specific properties such as a variable optical effect.
- the structure may include, where appropriate, heterogeneities present in both the substrate and the surface layer.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Credit Cards Or The Like (AREA)
- Paper (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0552778A FR2890666A1 (fr) | 2005-09-15 | 2005-09-15 | Structure comportant un substrat en matiere fibreuse et procede pour authentifier et/ou identifier une telle structure. |
PCT/FR2006/050896 WO2007031694A1 (fr) | 2005-09-15 | 2006-09-15 | Structure comportant un substrat en matiere fibreuse et procede pour authentifier et/ou identifier une telle structure |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1951957A1 true EP1951957A1 (fr) | 2008-08-06 |
Family
ID=36693946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06808334A Withdrawn EP1951957A1 (fr) | 2005-09-15 | 2006-09-15 | Structure comportant un substrat en matiere fibreuse et procede pour authentifier et/ou identifier une telle structure |
Country Status (7)
Country | Link |
---|---|
US (1) | US8558995B2 (fr) |
EP (1) | EP1951957A1 (fr) |
BR (1) | BRPI0616065A2 (fr) |
CA (1) | CA2622493A1 (fr) |
FR (1) | FR2890666A1 (fr) |
RU (1) | RU2421561C2 (fr) |
WO (1) | WO2007031694A1 (fr) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2839917B1 (fr) * | 2002-05-22 | 2004-10-08 | Arjo Wiggins | Article forme a partir d'au moins un jet de matiere fibreuse comportant au moins une zone d'epaisseur nulle et procede de fabrication dudit article |
ITVR20040104A1 (it) * | 2004-06-16 | 2004-09-16 | Cartiere Fedrigoni & C Spa | Apparecchiatura per la produzione di carta di sicurezza e relativo procedimento |
GB0702090D0 (en) * | 2007-02-02 | 2007-03-14 | Fracture Code Corp Aps | Virtual code window |
CN101504781B (zh) * | 2009-03-10 | 2011-02-09 | 广州广电运通金融电子股份有限公司 | 有价文件识别方法及装置 |
EP2237183B1 (fr) * | 2009-03-31 | 2013-05-15 | Technische Universität München | Procédé de sécurité |
FR2953622B1 (fr) * | 2009-12-04 | 2012-08-17 | Advanced Track & Trace | Procede et dispositif de securisation de document |
FR2955288B1 (fr) * | 2010-01-18 | 2013-05-10 | Hologram Ind | Procede de securisation d'un objet, et objet correspondant |
EP2531833A4 (fr) * | 2010-02-04 | 2013-08-07 | Spectra Systems Corp | Modifications activées par un gaz apportées aux caractéristiques d'absorption et d'émission de la lumière associées à des articles de sécurité |
FR2959581B1 (fr) * | 2010-04-28 | 2012-08-17 | Arjowiggins Security | Insert fibreux constitue en une seule couche et equipe d'un dispositif electronique a communication sans contact. |
US8289352B2 (en) | 2010-07-15 | 2012-10-16 | HJ Laboratories, LLC | Providing erasable printing with nanoparticles |
CH706413A1 (fr) * | 2012-04-17 | 2013-10-31 | Mhm Microtechnique Horlogerie Meyer | Elément, dispositif et procédé de marquage de produit. |
WO2014095682A1 (fr) * | 2012-12-20 | 2014-06-26 | Sicpa Holding Sa | Couche ou motif de polymère cristal liquide chiral (pclc) comprenant des cratères répartis de façon aléatoire dans ceux-ci |
BR102013003501A2 (pt) * | 2013-02-15 | 2015-01-06 | Nathan Tafla Rabinovitch | Processo para obtenção de folha celulósica magnética e o respectivo produto |
WO2014165047A1 (fr) | 2013-03-12 | 2014-10-09 | Arizona Board Of Regents, A Body Corporate Of The State Of Arizona Acting For And On Behalf Of Arizona State University | Structures et étiquettes dendritiques |
US10810731B2 (en) | 2014-11-07 | 2020-10-20 | Arizona Board Of Regents On Behalf Of Arizona State University | Information coding in dendritic structures and tags |
FR3035819B1 (fr) | 2015-05-07 | 2021-04-30 | Honnorat Rech & Services | Papier authentifiable smartphone |
US10102407B2 (en) * | 2015-09-21 | 2018-10-16 | Robert Bosch Gmbh | Method for generating a unique package identifier based on physical properties of a package |
US20170100862A1 (en) | 2015-10-09 | 2017-04-13 | Lexmark International, Inc. | Injection-Molded Physical Unclonable Function |
JP7030955B2 (ja) | 2017-04-24 | 2022-03-07 | パテック フィリップ ソシエテ アノニム ジュネーブ | 時計を識別する方法 |
EP3409786A1 (fr) * | 2017-05-31 | 2018-12-05 | Rhodia Acetow GmbH | Fibres d'acétate de cellulose marquées, procédés de fabrication et produits contenant de telles fibres |
EP3639188A4 (fr) | 2017-06-16 | 2021-03-17 | Arizona Board of Regents on behalf of Arizona State University | Balayage polarisé d'identifiants dendritiques |
WO2019210129A1 (fr) | 2018-04-26 | 2019-10-31 | Kozicki Michael N | Fabrication de structures et d'étiquettes dendritiques |
Family Cites Families (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3077398A (en) * | 1959-05-14 | 1963-02-12 | Bell & Howell Co | Xerographic plate made by cast coating |
NL296324A (fr) * | 1962-08-06 | |||
FR2425937A1 (fr) * | 1978-05-17 | 1979-12-14 | Arjomari Prioux | Structure fibreuse contenant des fibres metalliques, son procede de preparation, et son application notamment dans l'industrie du papier |
DE2845401C2 (de) * | 1978-10-18 | 1980-10-02 | Gao Gesellschaft Fuer Automation Und Organisation Mbh, 8000 Muenchen | Bedrucktes Wertpapier mit Echtheitsmerkmalen und Verfahren zur Prüfung seineT Echtheit |
US5228112A (en) * | 1979-02-16 | 1993-07-13 | Lemelson Jerome H | Inspection control system and method |
US5102501A (en) * | 1982-08-18 | 1992-04-07 | James River-Norwalk, Inc. | Multiple layer fibrous web products of enhanced bulk and method of manufacturing same |
US4882220A (en) * | 1988-02-02 | 1989-11-21 | Kanebo, Ltd. | Fibrous structures having a durable fragrance |
US5122229A (en) * | 1990-02-05 | 1992-06-16 | The Black Clawson Company | Apparatus and method for washing cellulosic pulp |
FI87999C (fi) * | 1990-08-14 | 1993-03-25 | Ahlstroem Oy | Separationsfoerfarande och -anordning foer separering av vaerdefull eller vaerdeloes fraktion fraon massa-, loesstoff- eller motsvarande materialsuspension genom att utnyttja flotationsprocessen |
US5364557A (en) * | 1991-11-27 | 1994-11-15 | Faris Sades M | Aligned cholesteric liquid crystal inks |
CN1070966C (zh) * | 1994-06-29 | 2001-09-12 | 普罗克特和甘保尔公司 | 由毛毯层和光敏树脂层构成的纸幅构图装置 |
DE19511780A1 (de) * | 1995-03-30 | 1996-10-02 | Giesecke & Devrient Gmbh | Datenträger mit verkapselten Duftstoffen und Verfahren zu seiner Herstellung |
GB9513361D0 (en) * | 1995-06-30 | 1995-09-06 | Farrall Andrew J | A security device |
US5792317A (en) * | 1996-02-07 | 1998-08-11 | Gl&V-Paper Machine Group, Inc. | Wet end starch application |
ES2159865T3 (es) * | 1996-05-23 | 2001-10-16 | Procter & Gamble | Papel tisu de multiples capas. |
GB2324065A (en) * | 1997-04-09 | 1998-10-14 | James Howard Slater | An identification code for banknotes or credit cards comprising a pattern of random beads |
US6105223A (en) * | 1997-04-30 | 2000-08-22 | The B. F. Goodrich Company | Simplified process for making thick fibrous structures |
US6643001B1 (en) * | 1998-11-20 | 2003-11-04 | Revco, Inc. | Patterned platelets |
FR2804784B1 (fr) * | 2000-02-04 | 2003-04-11 | Novatec | Procede universel d'identification et d'authentification d'objets, de vegetaux ou d'etres vivants |
EP1174278B1 (fr) * | 2000-07-11 | 2004-01-28 | Oji Paper Co., Ltd. | Papier pour l'enregistrement anti-contrefaçon et support en papier |
FR2814476B1 (fr) | 2000-09-11 | 2003-04-11 | Arjo Wiggins Sa | Feuille de securite comportant une couche transparente ou translucide |
GB0031016D0 (en) * | 2000-12-20 | 2001-01-31 | Alphafox Systems Ltd | Security systems |
FR2839917B1 (fr) * | 2002-05-22 | 2004-10-08 | Arjo Wiggins | Article forme a partir d'au moins un jet de matiere fibreuse comportant au moins une zone d'epaisseur nulle et procede de fabrication dudit article |
FR2842932B1 (fr) * | 2002-07-26 | 2004-10-08 | Arjo Wiggins | Document de securite comportant un microcircuit integre lie a un microcircuit de mesure |
US7645510B2 (en) * | 2002-09-13 | 2010-01-12 | Jds Uniphase Corporation | Provision of frames or borders around opaque flakes for covert security applications |
US20040118530A1 (en) * | 2002-12-19 | 2004-06-24 | Kimberly-Clark Worldwide, Inc. | Nonwoven products having a patterned indicia |
US7396593B2 (en) * | 2003-05-19 | 2008-07-08 | Kimberly-Clark Worldwide, Inc. | Single ply tissue products surface treated with a softening agent |
US20050110978A1 (en) * | 2003-11-26 | 2005-05-26 | Radislav Potyrailo | Method of authenticating articles, authenticatable polymers, and authenticatable articles |
WO2006130558A2 (fr) * | 2005-06-01 | 2006-12-07 | The Board Of Trustees Of The University Of Illinois | Structures souples pour capteurs et elements electroniques |
CA2564764C (fr) * | 2005-10-25 | 2014-05-13 | Jds Uniphase Corporation | Structures optiques a motif avec fonction de securite amelioree |
US20070178260A1 (en) * | 2006-01-27 | 2007-08-02 | Avery Levy | Paper having discrete regions of ferromagnetic material and process of making the same |
US7820009B2 (en) * | 2006-08-18 | 2010-10-26 | The Royal Institution For The Advancement Of Learning/Mcgill University | Cellulose composites comprising hydrophobic particles and their use in paper products |
US20080097618A1 (en) * | 2006-10-18 | 2008-04-24 | Kevin Charles Baker | Deposition of calcium-phosphate (CaP) and calcium-phosphate with bone morphogenic protein (CaP+BMP) coatings on metallic and polymeric surfaces |
-
2005
- 2005-09-15 FR FR0552778A patent/FR2890666A1/fr not_active Withdrawn
-
2006
- 2006-09-15 RU RU2008113948/12A patent/RU2421561C2/ru not_active IP Right Cessation
- 2006-09-15 WO PCT/FR2006/050896 patent/WO2007031694A1/fr active Application Filing
- 2006-09-15 BR BRPI0616065-4A patent/BRPI0616065A2/pt not_active IP Right Cessation
- 2006-09-15 CA CA002622493A patent/CA2622493A1/fr not_active Abandoned
- 2006-09-15 US US11/991,649 patent/US8558995B2/en not_active Expired - Fee Related
- 2006-09-15 EP EP06808334A patent/EP1951957A1/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2007031694A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2622493A1 (fr) | 2007-03-22 |
RU2008113948A (ru) | 2009-10-20 |
WO2007031694A1 (fr) | 2007-03-22 |
RU2421561C2 (ru) | 2011-06-20 |
BRPI0616065A2 (pt) | 2013-02-13 |
FR2890666A1 (fr) | 2007-03-16 |
US20090033914A1 (en) | 2009-02-05 |
US8558995B2 (en) | 2013-10-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1951957A1 (fr) | Structure comportant un substrat en matiere fibreuse et procede pour authentifier et/ou identifier une telle structure | |
EP1941101B1 (fr) | Article securise, notamment un document de securite et/ou de valeur | |
EP1747540B1 (fr) | Procede de reconnaissance et de suivi de supports fibreux, ainsi que les applications d'un tel procede dans le domaine informatique notamment | |
EP1716520B1 (fr) | Utilisation d'une signature numerique obtenue a partir d'au moins une caracteristique structurelle d'un element materiel pour proteger de la lecture directe des informations sensibles et procede de lecture de ces informations protegees | |
EP2585308B1 (fr) | Procede d'autentification et/ou d'identification d'un article de securite | |
CA2647490C (fr) | Procede de lecture d'au moins un code a barres et systeme de lecture d'un code a barres | |
EP2914440A1 (fr) | Carte securisee personnalisable par impression par transfert thermique | |
CA2542196C (fr) | Papier de securite multijet | |
WO2012076547A1 (fr) | Produit securise et methode de fabrication dudit produit securise | |
EP2494501B1 (fr) | Procede de fabrication d'un support integrant un dispositif electronique | |
EP2110260A1 (fr) | Support personnalisable comprenant des moyens d'antifalsification et procédé de fabrication d'un tel support. | |
EP2494500A1 (fr) | Procédé de fabrication d'un support comportant un dispositif électronique | |
EP2516113B1 (fr) | Procédé de fabrication d'une feuille par densification pour former une zone rendue transparente | |
FR2960005A1 (fr) | Document de securite comportant un filigrane ou pseudo-filigrane, une image combinee et une trame de revelation, et procedes associes. | |
FR2937279A1 (fr) | Document de securite comportant des elements thermochromiques et une information renseignant sur une temperature | |
FR2576696A1 (fr) | Procede d'authentification de documents | |
WO2013014611A1 (fr) | Procede de controle de l'etat physique d'un document | |
WO2002036218A1 (fr) | Carte a jouer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20080310 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
17Q | First examination report despatched |
Effective date: 20100223 |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ARJOWIGGINS SECURITY |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20140211 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20140624 |