US20050126685A1 - Magnetic marking system, method and machine for producing the same - Google Patents

Magnetic marking system, method and machine for producing the same Download PDF

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Publication number
US20050126685A1
US20050126685A1 US10/510,920 US51092005A US2005126685A1 US 20050126685 A1 US20050126685 A1 US 20050126685A1 US 51092005 A US51092005 A US 51092005A US 2005126685 A1 US2005126685 A1 US 2005126685A1
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US
United States
Prior art keywords
wires
adhesive
carrier
sheet
marking system
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.)
Abandoned
Application number
US10/510,920
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English (en)
Inventor
Bernard Boulay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cryptic
Original Assignee
Cryptic
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Filing date
Publication date
Application filed by Cryptic filed Critical Cryptic
Assigned to CRYPTIC reassignment CRYPTIC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BOULAY, BERNARD
Publication of US20050126685A1 publication Critical patent/US20050126685A1/en
Priority to US11/730,898 priority Critical patent/US20070240809A1/en
Priority to US12/289,237 priority patent/US7892378B2/en
Abandoned legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
    • G06K1/125—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by magnetic means
    • 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
    • G06K19/06009—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 with optically detectable marking
    • G06K19/06018—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 with optically detectable marking one-dimensional coding
    • G06K19/06028—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 with optically detectable marking one-dimensional coding using bar codes
    • 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
    • G06K19/06187—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 with magnetically detectable marking
    • G06K19/06196—Constructional details
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • the present invention relates in a general manner to the marking of articles, of products or of objects, with a view to their identification and/or to their authentication.
  • This invention pertains, more particularly, to a system for secure marking, by “magnetically coded label” or the like that can be “read” with the aid of an appropriate detector.
  • the marking system according to the invention possesses diverse applications:
  • optical bar code The identification of articles and of products by optical bar code is currently well known, but it comprises drawbacks.
  • an optical bar code may easily be reproduced with the aid of a scanner or a commercial photocopier, or modified, so that it offers no genuine security.
  • the necessarily visible nature of an optical bar code may give rise to drawbacks of an esthetic character, for certain kinds of objects or articles.
  • the present invention aims to remedy all of these drawbacks, by providing a magnetic marking system which, while still being particularly simple and discreet, proves to be extremely reliable and allows coding with very many combinations.
  • the subject of the invention is essentially a magnetic marking system, which comprises, on or in a carrier, in correspondence with pre-established parallel positions separated by a constant gap according to a pre-established frame, one or more wires having ultrasoft ferromagnetic properties, these parallel wires being present or absent in each of said positions so as to form, through the set of wires present or absent, a detectable binary code.
  • the carrier is of the two-dimensional type and constituted by a sheet of adhesive-coated material, which fixes the wires having ultrasoft ferromagnetic properties in their pre-established positions.
  • This adhesive-coated carrier sheet is advantageously covered, at least in its initial state, with a protective sheet, of the silicone-coated paper kind, which thus also covers the wires.
  • the carrier is of the three-dimensional type, in which case the wires having ferromagnetic properties are embedded in the thickness of this carrier, at a small depth, by comparison with the distance of two neighboring wires, so as in all cases to allow detection by contact or by quasi-contact, with the aid of an electromagnetic detector moving over the surface.
  • the wires used for the production of such a marking are, preferably, glass-clad amorphous ferromagnetic filaments whose mode of production is explained in “Ferromagnetic resonance in amorphous magnetic wires”, by S. A. BARANON et al., Phys. Met. Metall., No. 1, volume 67, pages 70 to 75, 1989.
  • the metal core of such filaments possesses a diameter of the order of some ten to a few tens of microns, while the thickness of the glass cladding does not exceed a few microns so that the total diameter of the filaments does not exceed 50 microns and that the filaments may be embedded in the adhesive mass of the carrier.
  • the metal core of these filaments is made from an amorphous magnetic alloy essentially composed of cobalt or of iron, of nickel, of boron, of silicon and of carbon, in variable proportions that may be:
  • Such wires by dint of their amorphous structure, may exhibit according to their composition a positive or negative coefficient of magnetostriction, and they possess a relatively weak magnetic field at saturation (coercive field) (from 50 to 500 A/m), these properties being variable as a function of the composition of the alloy as well as of the relative proportions of alloy and of glass.
  • a relatively weak magnetic field at saturation coercive field
  • magnetic properties of these wires may be found in: “Magnetic hysteresis in glass-covered and water-quenched amorphous wires” by H. CHIRIAC et al., Journal of Magnetism and Magnetic Materials 177-181, pages 205 and 206, 1998.
  • this is advantageously a portable device, consisting of an excitation coil making it possible to create, in the space or immediate vicinity of the wire, an alternating magnetic field of greater strength than the saturation field of the wire to be detected, and of two balanced reception coils, mounted in opposition, in such a way as not to detect any response signal in the absence of a wire situated in proximity, inside the excitation volume zone.
  • an excitation coil making it possible to create, in the space or immediate vicinity of the wire, an alternating magnetic field of greater strength than the saturation field of the wire to be detected, and of two balanced reception coils, mounted in opposition, in such a way as not to detect any response signal in the absence of a wire situated in proximity, inside the excitation volume zone.
  • the wire will then re-emit an electromagnetic field of the same frequency which will be detected essentially by that of the two reception coils that is situated closest to the wire, by virtue of an appropriate design of the detector.
  • By appropriate processing of the signal thus received on the detection device it is possible to determine the presence of a wire in proximity to the detection device. Consequently, by displacing this portable detection device, in a direction transverse to the magnetic marking wires, it becomes possible to “read” instantaneously the binary code borne by this marking.
  • the idea underlying the invention consists in the use of ferromagnetic wires of identical nature, all possessing the same ultrasoft magnetic properties allowing their detection with the aid of an electromagnetic excitation of proximity, and of low power (this detection being independent of the length of the wires), these wires being positioned in a precise manner on or in a carrier, in the manner of a bar code.
  • the marking system thus constituted comprises, by comparison with all the solutions previously proposed, a number of important advantages:
  • the number of wires of the magnetically coded label according to the invention lies between a minimum of one and a maximum of five.
  • These wires may comprise, in addition to the wires defining a binary code, a first wire for tagging the start of the reading zone, in which the wires defining the binary code are positioned.
  • the spacing between the possible positions of wires is preferably equal at the minimum to 2 millimeters, such a minimum “pitch” being necessary to distinguish the wires during detection, while preventing several wires from being located simultaneously inside the zone of critical excitation strength, or preventing these wires from having an influence on one another.
  • the “pitch” is chosen as a function of the dimensions of the labels and of the number of wires, this “pitch” possibly reaching several millimeters.
  • the useful width of the labels may lie between a few millimeters and several centimeters, such a dimension permitting the use of a binary code having several tens of bits, thus offering numerous combinations.
  • the absence of any wire in a given position corresponds to the value ZERO, and the presence of a wire in the relevant position corresponds to the value ONE.
  • a subject of the invention is also an industrial method for the production of the magnetic marking defined above, in the case where this marking is constituted by a carrier sheet made of adhesive-coated material, which fixes the wires having ferromagnetic properties in their pre-established positions, this carrier sheet having to be covered with a protective sheet.
  • This method consists, essentially, in unwinding a coil of virgin adhesive complex, which coil consists of a carrier sheet made of adhesive-coated material and of a protective sheet initially covering the adhesive-coated face, in performing an operation of delamination of this adhesive complex, consisting in separating the adhesive-coated carrier sheet from the protective sheet, while advancing these two sheets, in depositing wires having ultrasoft ferromagnetic properties on the adhesive-coated carrier sheet in the longitudinal direction of travel of this sheet, while positioning the wires transversely in a precise manner in correspondence with the code adopted for the marking, then in performing a relamination operation, consisting in returning the protective sheet onto the adhesive-coated carrier sheet henceforth furnished with the wires, and finally in rewinding the reconstituted adhesive complex and incorporating the wires.
  • the coil finally obtained may then be used as any other coil of adhesive complex that is intended for printing and cutting operations, to obtain separate adhesive carriers which, in the present case, will for example be magnetically coded labels with incorporated wires, or products fashioned in the format of any sheets.
  • a subject of the invention is a machine specially intended for the implementation of the method defined hereinabove, hence a machine for the production of the magnetic marking, still in the case where the latter is constituted by a carrier sheet made of adhesive-coated material, which fixes the wires having ferromagnetic properties in their pre-established positions, this carrier sheet being covered with a protective sheet.
  • the machine in question essentially comprises, in combination and from upstream to downstream:
  • the machine is equipped so as to initiate the process of depositing the wires, by fastening and pulling the ends of these wires, the carrier of the coils then being placed in the up position so as to avoid untimely gluing of the wires onto the adhesive-coated surface, especially during the transverse positioning of these wires to produce the desired code. Thereafter, the carrier of the coils is lowered, so that the wires become tangential to the adhesive-coated material, and begin to be fixed onto the latter. It will be noted that once fixed, the wires are driven forward with the carrier sheet, thereby rendering superfluous any specific means for unwinding the coils of wires or for pulling the wires.
  • the machine is furthermore equipped, in its downstream part, with means for checking the presence and the correct positioning of the laid wires, these means being able to intervene by “reading” the code formed by the wires, doing so in a manner similar to the “reading” of the same code by a detection device.
  • the latter also comprises, interposed between the abovementioned means of bringing and depositing the wires and the means of relamination, at least one additional module for laying a wire, making it possible to automatically, and in a quasi-instantaneous manner, cope with the “breakage” of a wire, noted by the means for checking the presence and the correct positioning of the wires. Should the case arise where several similar modules are thus interposed in succession, the machine could even automatically cope with the “breakage” of two or more wires.
  • this machine is also equipped with a marking device, making it possible to tag the defective zone, for the subsequent practical use of the coil.
  • the method and the machine allow the automatic continuous production, at high speed and in a reliable manner, of coded “raw material” allowing printing and cutting of an adhesive complex with a view to obtaining markings in accordance with the invention, while making it possible to vary the codes of these markings through the transverse positioning of the wires.
  • FIG. 1 is a front view of a magnetically coded label in accordance with the invention
  • FIG. 2 illustrates a use of this magnetically coded label
  • FIG. 3 represents another marking in accordance with the invention, illustrating the use thereof
  • FIG. 4 is a diagram illustrating the method of production of magnetically coded adhesive carriers according to the invention.
  • FIG. 5 is a side view of a machine for implementing this method
  • FIG. 6 is a plan view from above of the machine of FIG. 5 ;
  • FIGS. 7, 8 , 9 and 10 are partial diagrams of this machine, in side view, illustrating successive phases of its operation
  • FIG. 11 is another partial diagram of the same machine, in plan view from above;
  • FIG. 12 is a side view of a variant of this machine.
  • FIG. 1 shows a magnetic marking, made in the form of a magnetically coded label 1 .
  • the latter comprises a carrier sheet 2 possessing an adhesive-coated face, and a protective sheet 3 , of the silicone-coated paper kind, initially applied to the adhesive-coated face of the carrier sheet 2 .
  • Predefined on the magnetically coded label 1 are parallel positions 4 , separated by a constant “pitch” or gap “e”. In certain of these pre-established positions 4 are laid parallel wires 5 having ultrasoft ferromagnetic properties. The absence or the presence of the wires 5 , in the various possible positions 4 , defines a detectable binary code, specific to each label 1 .
  • the marking also advantageously comprises, toward an end of the label 1 , a first wire 6 having ferromagnetic properties, allowing the tagging of the start of the “reading zone” in which the other wires 5 are positioned.
  • All the wires 5 and 6 are fixed, in their pre-established positions, by simple adhesion to the adhesive-coated face of the carrier sheet 2 .
  • the protective sheet 3 initially covers these wires 5 and 6 .
  • the magnetically coded label 1 can be fixed by gluing onto a product, an article or an object, such as a bottle 7 as illustrated in FIG. 2 .
  • the displacement of an appropriate detector (not represented), along a direction F transverse to the wires 5 and 6 makes it possible to “read” the binary code formed by these wires.
  • the flexibility of the magnetically coded label 1 allows its winding around the body of the bottle 7 .
  • the magnetically coded label 1 or other marking according to the invention can also retain a plane configuration, in particular in correspondence with a plane face of an object 8 to be identified or to be authenticated.
  • the marking 1 with wires 5 , 6 having ferromagnetic properties may be embedded in a carrier 2 , itself incorporated with the object 8 , the wires 5 , 6 having, however, to be embedded at small depth, in such a way as to still allow their individual detection and the “reading” of the code formed by the set of these wires.
  • FIG. 4 illustrates the method of continuous production of a coded adhesive complex, serving as basis for the making of magnetically coded labels such as that represented in FIG. 1 .
  • the point of departure of the method is a coil 9 of virgin adhesive complex, consisting of a carrier sheet 2 possessing an adhesive-coated face, and of a protective sheet 3 initially applied to the adhesive-coated face of the carrier sheet 2 .
  • the coil 9 is unwound (arrow F 1 ), and the adhesive complex which constitutes it is delaminated, that is to say the adhesive-coated carrier sheet 2 is separated from the protective sheet 3 .
  • the two sheets. 2 and 3 then advance along distinct paths (arrows F 2 and F 3 ), being suitably guided.
  • the adhesive-coated carrier sheet 2 which is situated below the path of the protective sheet 3 , is carried out the laying of the wires 5 having ferromagnetic properties, emanating from respective coils of wire 10 , the device for laying these wires 5 being symbolized at 11 .
  • the wires 5 are thus laid parallel to one another, in the longitudinal direction of travel F 2 of the carrier sheet 2 , and with a very precise transverse positioning, corresponding to the code adopted for the marking to be produced.
  • the reconstituted adhesive complex is rewound, as indicated by the arrow F 4 , to form a new coil 12 .
  • This latter may subsequently be re-employed, for the printing of the complex and for its separation into individual markings, such as the label shown in FIG. 1 .
  • FIG. 5 et seq. represent, in greater detail, an automatic machine implementing the method shown diagrammatically in FIG. 4 .
  • the machine comprises, above an elongate bed 13 and from upstream to downstream: a subassembly 14 for unwinding and delamination, a module 15 for depositing the wires, and a subassembly 16 for relamination and rewinding.
  • the upstream subassembly 14 itself comprises a horizontal carrier shaft 17 , for a coil 9 of virgin. adhesive complex, to be unwound in the direction of the arrow F 1 . On leaving the coil 9 , this adhesive complex separates into the carrier sheet 2 , directed horizontally, and the protective sheet 3 , directed firstly vertically. The protective sheet 3 passes over a tension device 18 , placed in the upper part of the upstream subassembly 14 .
  • This subassembly 14 also comprises pairs of plates 19 and 20 , used to facilitate the linking up of the sheets 2 and 3 during a change of coil 9 .
  • the downstream subassembly 16 comprises various rollers 27 , 28 and 29 with horizontal axes, which guide the two sheets 2 and 3 in such a way as to join them.
  • This downstream subassembly 16 also comprises a horizontal carrier shaft 24 , receiving a coil 12 on which the reconstituted and coded adhesive complex is rewound.
  • the carrier shaft 24 is coupled up to an electric motor 25 , which is provided for driving this carrier shaft 24 , hence the coil 12 , in continuous rotation.
  • the downstream subassembly 16 furthermore comprises a detector 26 detecting the presence and the correct positioning of the laid wires.
  • the module 15 for depositing the wires which is interposed between the upstream subassembly 14 and the downstream subassembly 16 , itself comprises:
  • the cassette 30 is borne by a carriage 33 , itself movable in the transverse direction.
  • the subassembly 31 comprises a ram 34 , oriented longitudinally, whose upstream directed rod bears members 35 for fastening the ends of the wires 5 .
  • This subassembly 31 is itself transversely displaceable, by means of another ram 36 .
  • the device 32 comprises a comb 37 , whose various teeth are transversely displaceable.
  • a ram 38 is provided for controlling the raising and the lowering of the comb 37 .
  • FIGS. 7 to 10 illustrate the successive phases of operation of the machine, on startup of the latter, that is to say after the introduction of a new “cassette” 30 :
  • the detector 26 constantly checks the presence and the correct positioning of the laid wires 5 , and it can in particular instruct the stopping of the machine should there be a “breakage” of a wire 5 , or poor reading.
  • FIG. 12 shows a variant of the machine described above, the subassemblies and elements corresponding to those already described being designated therein by the tags.
  • an interposed module 39 which is designed according to the same principle as the module 15 but devised for the laying of a single wire 5 , emanating from a single coil 40 .
  • the additional module 39 makes it possible, should the absence of a wire be noted, to lay a replacement wire 5 on the carrier sheet 2 , in the exact position of the missing wire.
  • the invention is not limited solely to the modes of execution described above, by way of examples; it embraces, on the contrary, all embodiment and application variants, be they in particular the number of wires, or the nature of their carrier, or else the constructional details of the machines.
  • the interposed additional modules may be multiplied in order to allow the replacement of two or more broken wires.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • General Factory Administration (AREA)
  • Multi-Process Working Machines And Systems (AREA)
  • Burglar Alarm Systems (AREA)
  • Electronic Switches (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
US10/510,920 2002-04-12 2003-04-11 Magnetic marking system, method and machine for producing the same Abandoned US20050126685A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US11/730,898 US20070240809A1 (en) 2002-04-12 2007-04-04 Magnetic marking system, method and machine for producing the same
US12/289,237 US7892378B2 (en) 2002-04-12 2008-10-23 Magnetic marking system, method and machine for producing the same

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0204607A FR2838543B1 (fr) 2002-04-12 2002-04-12 Systeme de marquage magnetique, procede et machine pour sa fabrication
FR02/04607 2002-04-12
PCT/FR2003/001162 WO2003088137A1 (fr) 2002-04-12 2003-04-11 Système de marquage magnetique, procede et machine pour sa fabrication

Related Child Applications (1)

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US11/730,898 Continuation US20070240809A1 (en) 2002-04-12 2007-04-04 Magnetic marking system, method and machine for producing the same

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US20050126685A1 true US20050126685A1 (en) 2005-06-16

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US10/510,920 Abandoned US20050126685A1 (en) 2002-04-12 2003-04-11 Magnetic marking system, method and machine for producing the same
US11/730,898 Abandoned US20070240809A1 (en) 2002-04-12 2007-04-04 Magnetic marking system, method and machine for producing the same
US12/289,237 Expired - Fee Related US7892378B2 (en) 2002-04-12 2008-10-23 Magnetic marking system, method and machine for producing the same

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US11/730,898 Abandoned US20070240809A1 (en) 2002-04-12 2007-04-04 Magnetic marking system, method and machine for producing the same
US12/289,237 Expired - Fee Related US7892378B2 (en) 2002-04-12 2008-10-23 Magnetic marking system, method and machine for producing the same

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US (3) US20050126685A1 (ru)
EP (1) EP1495441B1 (ru)
JP (1) JP2005522792A (ru)
CN (1) CN100468448C (ru)
AT (1) ATE425509T1 (ru)
AU (1) AU2003262196A1 (ru)
CA (1) CA2482153A1 (ru)
DE (1) DE60326554D1 (ru)
FR (1) FR2838543B1 (ru)
RU (1) RU2339996C2 (ru)
WO (1) WO2003088137A1 (ru)

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DE102009039588A1 (de) * 2009-09-01 2011-03-03 Giesecke & Devrient Gmbh Verfahren und Vorrichtung zur Prüfung von Wertdokumenten
CN103228806B (zh) * 2010-05-27 2015-12-16 纳米钢公司 呈现亚稳玻璃基体显微组织结构和变形机制的合金
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US10846572B2 (en) * 2011-07-05 2020-11-24 Bernard Fryshman Induction system for product authentication
RU2498905C2 (ru) * 2011-10-24 2013-11-20 Виталий Георгиевич Савиновский Способ маркировки невидимой нитью савиновского в.г.
CN103136575A (zh) * 2011-12-05 2013-06-05 朱洪强 动静态码组在智能卡、锁等方面的应用方法和产品集成
CN103974825B (zh) * 2011-12-13 2016-12-07 英派尔科技开发有限公司 编码纤维
CN102767112B (zh) * 2012-07-02 2014-12-10 陕西科技大学 一种基于点阵图形的纤维成纸过程的数字化加密方法
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CN1659584A (zh) 2005-08-24
EP1495441A1 (fr) 2005-01-12
FR2838543A1 (fr) 2003-10-17
US20090078359A1 (en) 2009-03-26
JP2005522792A (ja) 2005-07-28
AU2003262196A1 (en) 2003-10-27
US7892378B2 (en) 2011-02-22
US20070240809A1 (en) 2007-10-18
CN100468448C (zh) 2009-03-11
RU2339996C2 (ru) 2008-11-27
ATE425509T1 (de) 2009-03-15
WO2003088137A1 (fr) 2003-10-23
RU2004133534A (ru) 2005-06-10
CA2482153A1 (fr) 2003-10-23
EP1495441B1 (fr) 2009-03-11
FR2838543B1 (fr) 2004-06-04

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