WO2004007096A2 - Magnetic planarization of pigment flakes - Google Patents
Magnetic planarization of pigment flakes Download PDFInfo
- Publication number
- WO2004007096A2 WO2004007096A2 PCT/US2003/020726 US0320726W WO2004007096A2 WO 2004007096 A2 WO2004007096 A2 WO 2004007096A2 US 0320726 W US0320726 W US 0320726W WO 2004007096 A2 WO2004007096 A2 WO 2004007096A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic
- flakes
- pigment flakes
- substrate
- applying
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/061—Special surface effect
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
- A45D34/04—Appliances specially adapted for applying liquid, e.g. using roller or ball
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/20—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields
- B05D3/207—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields post-treatment by magnetic fields
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F11/00—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
- B41F11/02—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination for securities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
-
- 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
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2200/00—Printing processes
- B41P2200/30—Heliography
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- B42D2033/16—
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- B42D2035/20—
Definitions
- This invention relates generally to printing or fabricating objects with pigment flakes, and more particularly to magnetically aligning pigment flakes in a plane to enhance the cumulative visual effect of the flakes.
- Pigment flakes are used in a variety of applications, such as paint, inks, textiles, cosmetics, extruded films, plastic castings, and powder coatings. Different types of pigment flakes can provide various, and often striking, visual effects. Color shifting is an example of a visual effect that can be obtained using pigment flakes.
- the pigment flakes can have an optical interference structure, such as a Fabry-Perot structure or thin-film stack, that changes color as the flake is tilted with respect to the viewing angle.
- color-shifting images are used as security features on bank notes, like the U.S. 20-dollar bill, and for decorative purposes on and in a wide variety of consumer items, including vehicles, helmets, eyeglass frames, fingernail polish, and cell-phone cases, to name a few.
- pigment flakes include reflective flake pigments and diffractive flake pigments.
- the pigment flakes tend to align in a plane of the object, such as the printed paper, to produce a visual optical effect from the aggregate effect of the individual flakes. It is not necessary for each flake to be perfectly aligned with each other, or with the plane of the substrate, but suitable optical effects can be obtained when a sufficient portion of the flakes are suitably aligned.
- the present invention provides enhanced visual appearance of objects using flake pigments.
- magnetic pigment flakes are applied to a surface of a substrate. A magnetic field is then applied to more closely align at least a portion of the magnetic pigment flakes to a plane of the surface of the substrate. The visual appearance is enhanced because of the aggregate optical effect of the planarized pigment flakes.
- flakes are applied to a surface and then burnished to planarize the flakes.
- an image is printed on a document using a printing technique that aligns flakes to the plane of the substrate during application, but de-planarizes the flakes when completing the printing process.
- Magnetic color- shifting pigment particles in a fluid carrier are applied to a surface of a substrate, and a magnetic field is applied to more closely align at least a portion of the magnetic color-shifting pigment particles to a plane of the surface of the substrate.
- the flakes are fixed after planarization by drying or curing the carrier.
- Such images can be used for decorative or security purposes, such as an anti-counterfeiting device on a banknote.
- FIGs. 1 A-1C are simplified side views of a printing apparatus before, during, and after printing illustrating de-planarization of pigment flakes.
- FIGs. 2A-2C are simplified side views of a screen printing apparatus before, during and after printing illustrating de-planarization of pigment flakes.
- Fig. 3 A is a simplified side view of a print with de-planarized magnetic pigment flakes.
- Fig. 3B is a simplified side view of magnetically planarized pigment flakes according to an embodiment of the present invention.
- Fig. 3C is a simplified side view of magnetically planarized pigment flakes according to another embodiment of the present invention
- Fig. 4 is a simplified side view of an exemplary pigment flake suitable for use in embodiments of the present invention.
- Fig. 5 is a simplified plan view of an exemplary image printed according to an embodiment of the present invention.
- Fig. 6A is a simplified flow chart of a method for flattening magnetic pigment flakes according to an embodiment of the present invention.
- Fig. 6B is a simplified flow chart of a method for re-planarizing magnetic pigment flakes according to an embodiment of the present invention.
- FIG. 6C is a simplified flow chart of a method for flattening magnetic pigment flakes according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION I. Introduction
- the present invention provides enhanced visual effects using magnetic pigment flakes.
- the magnetic pigment flakes are dispersed in a fluid carrier that allows the magnetic pigment flakes to respond to torque arising from a magnetic field applied across the flake.
- flakes are physically flattened by burnishing a printed image while the carrier is sufficiently plastic to allow orientation of the flakes into the plane of the substrate.
- Fig. 1 A is a simplified side view of a printing apparatus 10.
- a die 12 has an engraved face, and ink 14 has been applied to the face.
- the ink includes magnetic pigment flakes 16 dispersed in a fluid carrier 18, such as an ink vehicle or a paint vehicle.
- the carrier could be transparent, such as a clear or tinted vehicle, or semi- transparent, and ink may include other pigment particles.
- the pigment flakes are generally small, thin flakes that are flat or reasonably flat. Typical dimensions for a flake might be about twenty microns across and about one micron thick; however, these dimensions are merely exemplary and not limiting. Much larger or much smaller flakes could be used, as could flakes with different aspect ratios.
- Optically variable pigment (“OVP"TM) pigment flakes include an optical interference structure, such as a Fabry-Perot structure, made from thin film layers. The OVP shifts color with viewing angle. Different optical designs can produce various hues and color travel.
- Pigment flakes incorporating a thin film layer of magnetic material can provide a suitable magnetic structure for magnetic alignment of the pigment flakes.
- Other magnetic materials and structures could be incorporated into pigment flakes to provide a suitable magnetic structure for magnetic alignment, and suitable materials might form permanent magnets or not, but it is generally desirable to avoid permanent magnetization of the flakes prior to application to avoid clumping.
- Some pigment flakes might be simply made from magnetic material, such as nickel flakes, which could be used for a reflective, non-color-shifting effect.
- the magnetic pigment flakes 16 on the face of the die are shown as being reasonably well aligned in a plane corresponding to the surface 20 of the substrate 22, which is supported by a plate or table 24.
- the substrate could be paper, film, laminate, card stock, fabric, leather, plastic, or metal, for example.
- a paper substrate will be used as an example
- the flakes can be aligned on the face of the die in a variety of fashions. Flakes tend to follow the flow of the carrier so as to present the least fluid resistance. Flakes in a carrier (e.g. ink) can be aligned to a surface by drawing the ink into a thin layer along the surface with a blade or squeegee. The die can then pick up the drawn flakes and print them onto the substrate.
- a carrier e.g. ink
- Fig. IB is a simplified side view of the die 12 contacting the substrate 22 . with the magnetic pigment flakes 16 remaining relatively aligned
- Fig. 1C is a simplified side view showing how the magnetic pigment flakes 16 have been pulled out of planar alignment when the die 12 was lifted off the substrate 22. This de- planarization occurs in other printing processes.
- Fig. 2 A is a simplified side view of a screen printing apparatus 30 such as a silkscreen apparatus.
- a screen printing apparatus 30 such as a silkscreen apparatus.
- Such techniques use a patterned screen 32.
- the pattern can be defined a number of ways, one of which is using a photo-sensitive emulsion 34 that is developed to open windows 36 in the patterned screen.
- the actual "silk" screen 38 is very thin and fine, and allows the ink or paint to pass through.
- Ink 40 is drawn across the screen with a blade or squeegee 42 in the direction shown by the arrow 44.
- Fig. 2B is a simplified side view showing the alignment of the pigment flakes 16 in the printed portions 44 while the patterned screen 32 is still in contact.
- Fig. 2C illustrates how the pigment flakes 16 are de-planarized when the patterned screen 32 is lifted from the substrate 22.
- Fig. 3 A is a simplified side view of a substrate 22 with non-planarized magnetic pigment flakes 16 in a fluid carrier 18 on the surface 20 (i.e. the plane) of the substrate 22.
- the non-planarized magnetic pigment flakes may be applied using a technique that does not sufficiently planarize the flakes, or that de-planarizes the flakes to some extent, including current techniques that produce an aggregate visual effect of the flakes as applied. It is understood that some of the pigment flakes might lie in the plane of the substrate, but that many do not, and that generally an enhanced visual effect might be obtained by aligning more flakes to the plane of the substrate ("planarization").
- FIG. 3B is a simplified side view of an apparatus 50 for planarizing magnetic pigment flakes 16 according to an embodiment of the present invention.
- Magnets 52, 54 are configured to create magnetic field lines, represented by dashed lines 56, essentially in the plane of the substrate 22.
- the magnetic pigment flakes which are dispersed in the fluid carrier 18, tend to align themselves along the magnetic field lines so that the major surfaces of the flakes are more parallel to the surface of the substrate, and hence to each other.
- the magnets are arranged with the north pole 53 of one magnet facing the south pole 55 of another, although different magnet configurations are possible. After aligning the flakes, the carrier is fixed, typically by drying, setting, or curing.
- the substrate moves past the magnets at speeds in the range of about 2 meters/second, and the carrier rapidly dries after the ink is applied to the substrate.
- the planarization of the flakes occurs in only a few milliseconds.
- Permanent magnets commonly known as “supermagnets", such as Nd- Fe-B magnets, can produce sufficiently high fields to planarize magnetic pigment flakes in a high-speed printing operation. Electromagnets may be used in some embodiments, but tend to be bulkier than permanent magnets of comparable strength and the coils, which require electric current, generate heat. Such permanent supermagnets are capable of producing magnetic field strengths of up to 70,000 Amps/meter, although other processes may operate with different magnetic field strengths.
- Factors such as the time available for planarization, viscosity of the carrier, size of the flake, and magnetic characteristics of the flake may affect the desired alignment of the flakes. Similarly, it is understood that even after magnetic planarization not all flakes are perfectly aligned in the plane of the substrate, and that improvement in the visual characteristics of the image formed with the magnetic pigment flakes is a matter of degree, the suitability of which might depend on the initial state flakes and the desired effect, for example.
- FIG. 3C is a simplified side view of an apparatus 60 according to another embodiment of the present invention for planarizing magnetic pigment flakes 16 that have been applied to a substrate 22.
- Magnets 62, 64, 66 are arranged below the substrate 22 with their respective north and south poles as shown.
- the magnets are arranged relative to the printed fields 68, 70 so that the magnetic field lines 72 are essentially parallel to the plane of the substrate.
- Another embodiment might have closely spaced opposing magnets (north- north or south-south) on opposite sides of the flakes, such as for planarizing flakes during extrusion of a plastic film. In that case, there might not be a separate "substrate".
- the curing or setting plastic fixes the orientation of the flakes in the film.
- the planarization of the flakes enhances the aggregate visual effect of the flakes.
- optically variable pigment brighter, more intense colors are obtained.
- optically variable pigment was used to make ink that was applied to test cards using a silk-screen technique. One card was allowed to dry as normal, while a magnetic field was applied to a second card before the ink vehicle (carrier) dried to planarize the pigment flakes in the plane of the substrate. The chroma was measured for each sample. The planarization increased the chroma ten points, which is a very significant increase.
- FIG. 4 is a simplified side view of a magnetic pigment flake 80 suitable for use in embodiments of the present invention.
- a magnetic structure 82 is between optical structures 84, 86.
- the optical structures could be Fabry-Perot structures having a reflective layer next to the magnetic structure, a spacer layer, and then an absorber layer, as is well-known in the art of optically variable pigments, for example.
- the magnetic layer 82 can serve as the reflector in the Fabry-Perot structures, such as if it is a layer of nickel.
- Nickel and PERMALLOY layers about 50 nm thick have been found to provide magnetic alignment of color-shifting pigment flakes with Fabry-Perot optical structures where the flakes are about one micron thick and about 20 microns across (average).
- FIG. 5 is a simplified plan view of an exemplary image 90 printed according to an embodiment of the present invention on a substrate 92, such as paper.
- the image could be a security, authentication, or anti-counterfeiting device printed on a banknote, label, or product packaging, for example. Paint or ink containing magnetic pigment flakes is applied to a substrate, and a magnetic field is applied to planarize magnetic pigment flakes.
- Fig. 6A is a simplified flow chart of a method 600 for flattening magnetic pigment flakes according to an embodiment of the present invention.
- Magnetic pigment flakes in a fluid carrier are applied to a substrate (step 602).
- a magnetic field is applied to the magnetic pigment flakes to align the flakes in the plane of the substrate (step 604) while the carrier is still fluid.
- the carrier then typically dries, cures, or sets to fix the alignment of the flakes (step 606).
- the substrate is static relative to the magnetic field, while in other embodiments the substrate is moving, sometimes at high speed.
- the substrate might be a large sheet of paper with several printed images on it, or even a roll of paper.
- Fig. 6B is a simplified flow chart of a method 610 for re-planarizing magnetic pigment flakes according to an embodiment of the present invention.
- Magnetic pigment flakes in a fluid carrier are partially aligned (step 612) during application, such as during a silk-screen printing operation or some Intaglio printing operations.
- the flakes are de-planarized (step 614) when the screen or die is lifted from the substrate, for example.
- a magnetic field is applied to the magnetic pigment flakes to align the flakes in the plane of the substrate (step 616) while the carrier is still fluid.
- Fig. 6C is a simplified flow chart of a method 620 for flattening pigment flakes according to another embodiment of the present invention.
- Pigment flakes are applied to a substrate (step 622) and then burnished (step 624) to physically press the flakes to align with the plane of the substrate.
- the carrier is typically plastic enough to allow slight re-alignment of the flakes, which do not have to be magnetic flakes. Burnishing can be accomplished by passing the printed substrate between two rollers that provide sufficient pressure to align the flakes to the plane of the substrate, for example.
- a static substrate could be burnished simply by rubbing or rolling a smooth object over the printed image, supported by a plate or table, to press the flakes into the plane of the substrate.
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- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Printing Methods (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Credit Cards Or The Like (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Soft Magnetic Materials (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020047021640A KR101024880B1 (en) | 2002-07-15 | 2003-07-01 | Self-Planning of Pigment Flakes |
JP2005505110A JP5033329B2 (en) | 2002-07-15 | 2003-07-01 | Magnetic flattening of pigment flakes. |
EP03764338A EP1519794B1 (en) | 2002-07-15 | 2003-07-01 | Magnetic planarization of pigment flakes |
DE60335544T DE60335544D1 (en) | 2002-07-15 | 2003-07-01 | MAGNETIC PLANARIZATION OF PIGMENT FLAKES |
AT03764338T ATE493208T1 (en) | 2002-07-15 | 2003-07-01 | MAGNETIC PLALARIZATION OF PIGMENT FLAKES |
Applications Claiming Priority (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US39621002P | 2002-07-15 | 2002-07-15 | |
US60/396,210 | 2002-07-15 | ||
US41054602P | 2002-09-13 | 2002-09-13 | |
US41054702P | 2002-09-13 | 2002-09-13 | |
US60/410,546 | 2002-09-13 | ||
US60/410,547 | 2002-09-13 | ||
US10/293,817 US7258900B2 (en) | 2002-07-15 | 2002-11-13 | Magnetic planarization of pigment flakes |
US10/293,817 | 2002-11-13 | ||
US10/386,894 US7047883B2 (en) | 2002-07-15 | 2003-03-11 | Method and apparatus for orienting magnetic flakes |
US10/386,894 | 2003-03-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004007096A2 true WO2004007096A2 (en) | 2004-01-22 |
WO2004007096A3 WO2004007096A3 (en) | 2004-05-06 |
Family
ID=30119306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/020726 WO2004007096A2 (en) | 2002-07-15 | 2003-07-01 | Magnetic planarization of pigment flakes |
Country Status (7)
Country | Link |
---|---|
US (1) | US7258900B2 (en) |
EP (2) | EP3059019B1 (en) |
JP (1) | JP5033329B2 (en) |
KR (1) | KR101024880B1 (en) |
CN (1) | CN1330434C (en) |
TW (1) | TWI278259B (en) |
WO (1) | WO2004007096A2 (en) |
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EP1837193A1 (en) * | 2006-03-21 | 2007-09-26 | JDS Uniphase Corporation | Brand protection label with a tamper evident abrasion-removable magnetic ink |
JP2008515475A (en) * | 2004-10-05 | 2008-05-15 | ロレアル | Kit and method for applying makeup |
EP1990208A1 (en) | 2007-05-10 | 2008-11-12 | Kba-Giori S.A. | Device and method for magnetically transferring indica to a coating composition applied to a substrate |
EP2221177A1 (en) | 2007-02-20 | 2010-08-25 | Kba-Giori S.A. | Cylinder body for orienting magnetic flakes contained in an ink or varnish vehicle applied on a sheet-like or web-like substrate |
EP2433798A1 (en) | 2010-09-24 | 2012-03-28 | KBA-NotaSys SA | System and method for orienting magnetic flakes contained in an ink or varnish vehicle applied on a sheet-like or web-like substrate |
US8557403B2 (en) | 2006-10-17 | 2013-10-15 | Sicpa Holding S.A. | Method and means for magnetically transferring indicia to a coating composition applied on a substrate |
US9027479B2 (en) | 2002-07-15 | 2015-05-12 | Jds Uniphase Corporation | Method and apparatus for orienting magnetic flakes |
WO2016026896A1 (en) | 2014-08-22 | 2016-02-25 | Sicpa Holding Sa | Apparatus and method for producing optical effect layers |
US9649261B2 (en) | 2004-10-05 | 2017-05-16 | L'oreal | Method of applying makeup to a surface and a kit for implementing such a method |
WO2018141547A1 (en) | 2017-01-31 | 2018-08-09 | Sicpa Holding Sa | Apparatuses and methods for producing optical effect layers |
US10173455B2 (en) | 2002-07-15 | 2019-01-08 | Viavi Solutions Inc. | Dynamic appearance-changing optical devices (DACOD) printed in a shaped magnetic field including printable fresnel structures |
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DE602005016578D1 (en) * | 2004-10-05 | 2009-10-22 | Oreal | MAKE-UP KIT AND METHOD |
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US20060121185A1 (en) * | 2004-12-06 | 2006-06-08 | Gann Xu | Carbon nanotube optical polarizer |
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Also Published As
Publication number | Publication date |
---|---|
EP1519794B1 (en) | 2010-12-29 |
US20040009309A1 (en) | 2004-01-15 |
CN1330434C (en) | 2007-08-08 |
EP1519794A2 (en) | 2005-04-06 |
WO2004007096A3 (en) | 2004-05-06 |
JP2005532907A (en) | 2005-11-04 |
EP3059019A1 (en) | 2016-08-24 |
KR20050021373A (en) | 2005-03-07 |
KR101024880B1 (en) | 2011-03-31 |
TW200410614A (en) | 2004-06-16 |
TWI278259B (en) | 2007-04-01 |
EP3059019B1 (en) | 2020-05-20 |
CN1668391A (en) | 2005-09-14 |
US7258900B2 (en) | 2007-08-21 |
JP5033329B2 (en) | 2012-09-26 |
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