WO2002090119A2 - Ink jet printers and methods - Google Patents
Ink jet printers and methods Download PDFInfo
- Publication number
- WO2002090119A2 WO2002090119A2 PCT/IL2002/000346 IL0200346W WO02090119A2 WO 2002090119 A2 WO2002090119 A2 WO 2002090119A2 IL 0200346 W IL0200346 W IL 0200346W WO 02090119 A2 WO02090119 A2 WO 02090119A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ink drops
- liquid ink
- nozzle
- drops
- substrate
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 63
- 239000007788 liquid Substances 0.000 claims abstract description 126
- 239000000758 substrate Substances 0.000 claims abstract description 101
- 238000007639 printing Methods 0.000 claims abstract description 61
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 38
- 238000007599 discharging Methods 0.000 claims abstract description 17
- 238000003384 imaging method Methods 0.000 claims description 42
- 238000005755 formation reaction Methods 0.000 claims description 37
- 230000005284 excitation Effects 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 6
- 238000012937 correction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 11
- 238000005286 illumination Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 229910002056 binary alloy Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/07—Ink jet characterised by jet control
- B41J2/105—Ink jet characterised by jet control for binary-valued deflection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/07—Ink jet characterised by jet control
- B41J2/075—Ink jet characterised by jet control for many-valued deflection
- B41J2/08—Ink jet characterised by jet control for many-valued deflection charge-control type
- B41J2/09—Deflection means
Definitions
- the present invention relates to ink jet printers and methods of printing
- the present invention is particularly useful in the apparatus and
- Inkjet printers are based on forming drops of liquid ink and selectively
- the known ink jet printers generally
- drop-on-demand printers fall into two categories: drop-on-demand printers, and continuous-jet printers.
- Drop-on-demand printers selectively form and deposit the ink jet drops
- Such systems typically use nozzles having relatively large
- openings ranging from 30 to 100 ⁇ m.
- Continuous-jet printers are stimulated by a
- the drops are selectively charged and deflected to direct them onto the
- Continuous-jet printers are divided into two types of systems: binary, and
- the drops are either charged or uncharged and,
- the drops can receive a large number of charge
- the ink flow conditions e.g. viscosity, surface tension
- drop formation is a fast
- Satellites are characterized by volumes which are much
- volume i.e. the volume within the drop desired to be printed.
- satellites carry a charge similar to the
- An object of the present invention is to provide a method of ink jet
- liquid ink drops to be printed being either uncharged or charged with a
- this feature is that it enables a relatively wide drop "fan" to be created without
- each of the liquid ink drops to the gutter.
- each of the liquid ink drops to
- liquid ink drops are selectively
- the illuminated stream of drops is sensed by a camera having an imaging lens.
- Errors in the ink velocity may be determined by comparing the optically-sensed
- a method of printing a desired pattern on a substrate comprising:
- the acoustical excitation device to avoid satellite formations.
- the liquid ink drops by input data, according to the pattern desired to be printed,
- liquid ink drops to different locations on the substrate for printing the desired
- the sensor devices having
- the sensor devices are optical sensors, preferably cameras having an imaging
- the computed X-axis offset for a particular nozzle is corrected by adjusting
- printing apparatus for printing a desired pattern on a substrate, comprising: a
- control system controlling the charging plates such that at
- liquid ink drops to be printed are either uncharged or charged
- printing apparatus for printing a desired pattern on a substrate, comprising: a
- each nozzle for selectively charging the liquid ink drops of the respective
- a gutter for intercepting, before reaching the substrate, the
- liquid ink drops not to be printed at least two sensor devices for sensing the
- Fig. 1 is a diagram illustrating a simplified ink jet printer according to
- Fig. 2 is a diagram illustrating a simplified prior art printer utilizing
- Fig. 3 is a diagram illustrating a simplified prior art printer utilizing
- Fig. 4 is a diagram illustrating one form of ink jet printer utilizing
- Fig. 5 is a diagram illustrating another form of ink jet printer utilizing
- Fig. 6 diagrammatically illustrates a modification in the construction of
- Fig. 7 diagrammatically illustrates an ink jet printer constructed in
- Fig. 7a diagrammatically illustrates a modification in the ink jet printer
- FIG. 8-11 are diagrams helpful in explaining the operation of the
- Fig. 12 is a block diagram more particularly illustrating one form of
- Fig. 13 is a block diagram illustrating apparatus similar to that of
- Fig. 14 is a diagram illustrating the manner in which the X-axis offsets
- Fig. 1 illustrates a simplified construction of a continuous-jet printer
- the illustrated printer includes a nozzle 2 containing
- a reservoir of liquid ink directing the liquid ink in the form of a continuous jet along the nozzle axis 3 towards a substrate 4 for deposition thereon according
- Nozzle 2 includes a perturbator, such as a
- piezoelectric transducer which converts the jet of liquid ink into a continuous
- the substrate 4 but selectively deflected according to the desired pattern to be
- charging plates 6 selectively charge the drops 5 at the instant of drop break-off
- Fig. 1 The arrangement illustrated in Fig. 1 is a bi-level deflection
- Fig. 2 illustrates a bi-level deflection printer of basically the same
- the gutter 8 is located laterally of the nozzle axis 3, so as to
- Fig. 3 illustrates a prior art ink jet printer of a similar construction as in
- Fig. 1 except that it utilizes a multi-level deflection arrangement, rather than a
- the uncharged free-fall drops are the drops not to be printed
- Figs. 1-3 are identified generally by the same reference numerals.
- Fig. 4 illustrates a multi-level deflection arrangement wherein the
- deposited on the substrate 4 are either uncharged, or charged to a selected one
- the substrate 4 will receive, as printed dots, the un-charged
- the uncharged free-fall drops may be used for calibration purposes.
- Fig. 5 illustrates an arrangement, similar to that of Fig. 4 and therefore
- Fig. 4 is that, whereas in Fig. 4 the charges of each liquid ink drop of the
- opposite polarity i.e., directed to the gutter 8 is at only one voltage level, in
- the charges of the opposite polarity can also be of a plurality of voltage
- the drops 5b to be directed to the gutter 8 and not to be deposited on the substrate 4 may be charged to a relatively high level of any
- dots 9a-9n may be charged to lower levels of the same polarity, uncharged, or
- Fig. 6 illustrates an arrangement similar to that of Fig. 5, and therefore
- the deflecting plates 7 include a section 7a on the
- nozzle axis but further include a diverging section 7b on the end facing the
- Fig. 7 illustrates one manner of utilizing the uncharged free-fall liquid
- Fig. 7 utilizes the same reference numerals to
- the calibration technique illustrated in Fig. 7 utilizes a stroboscopic
- illumination unit generally designated 10
- one or more cameras generally designated
- the stroboscopic illumination unit 10 may
- LED light emitting diode
- 11 preferably incorporates a CCD camera and an imaging lens to display the
- liquid ink drops 5 may be generated at a rate of 30 kHz, and the illumination
- Fig. 8 illustrates the image captured by the camera 11 when the
- illumination unit 10 is strobed at the frequency of generation of the liquid ink
- H is the distance between the first and last drops
- SF is the strobe frequency of operation of the
- charging drive values may be captured. This may be done by dividing the
- FIG. 9 illustrates the resulting display of the two streams.
- the Fig. 9 illustrates the resulting display of the two streams.
- the drop break-off time i.e., that the charging pulses be in an in-phase
- Video frames corresponding to the continuously changing phases are
- Fig. 10 illustrates the display 12 when the
- Fig. 11 illustrates the display when the charging pulses
- Fig. 7a illustrates a stroboscopic arrangement which may be used for
- Fig. 7a includes the stroboscopic illumination unit 10a and the
- the jet acoustic excitation i.e. the
- Fig. 12 is a block diagram illustrating one manner in which an ink jet
- printer may be operated and calibrated in accordance with the present invention
- the ink jet printer illustrated in Fig. 12 includes a printer
- printer head 20 includes a reservoir of liquid ink and a piezoelectric
- the system controller 25 controls the charges applied to the
- Controller 25 also controls the charges to be applied to the deflector plates
- controller 25 furthermore
- the printer mechanical drive 30 controls the printer mechanical drive 30, the printer electrical drive (e.g. the
- Fig. 12 also illustrates the additional components for controlling the
- the system is provided with a stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic stroboscopic light.
- illumination unit 40 incorporating unit 10 in Fig. 7 and
- the stroboscopic device may be an LED stroboscopic device having the ability to strobe at a frequency
- the video imaging unit 41 may
- imaging unit 41 displays the ink drops in a display 42, and/or digitally stores
- the LED stroboscopic device 40 includes a drive, shown at 43, also
- printer is the speed of the free-fall stream of ink drops, which can be observed
- velocity may be done manually, e.g. by comparison with reference tables or
- FIG. 12 therefore illustrates the
- circuit 27 to compensate for drop velocity errors or incorrect drop charging.
- phase shifter circuit 28 the phase shifter circuit 28.
- the formation of satellites in the ink drops can be suppressed by an
- printer head 20 can be controlled so as to produce an optimum shape of the ink
- Fig. 13 illustrates an apparatus, similar to that of Fig. 12, but provided
- a second sensor device namely a second camera therein designated 50
- the outputs of the two cameras 41, 50 are fed to the system controller 25 which
- System controller 25 corrects the computed X-offset for a particular nozzle by controlling the charger circuit 27 to adjust the charging
- controller 25 corrects the computed Y-axis offset for a particular nozzle by
- system controller 25 to the respective nozzle.
- Fig. 14 illustrates one configuration for measuring the X-axis offset
- angle " ⁇ >" could be 45°.
- the object is to measure the geometrical position of the streams of jets
- Dx the separation in the x axis between the center of imaging device
- Dy the separation in the y axis between the center of imaging device 61
- ⁇ the angle between imaging device 61 and imaging device 62;
- fl the focal length of the imaging device 61
- f2 the focal length of imaging device 62
- cl the center of the image plane on the CCD in imaging device 61;
- c2 the center of the image plane on the CCD in imaging device 62.
- the method employs multiple measurement of each jet, while each
- the movement of the carriage is adjusted to be predominantly parallel to the row of nozzles (or in an alternative language - to
- geometrical parameters is varied - for instance, if four parameters out of
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02728002A EP1390207B1 (en) | 2001-05-03 | 2002-05-02 | Ink jet printers and methods |
AU2002258130A AU2002258130A1 (en) | 2001-05-03 | 2002-05-02 | Ink jet printers and methods |
DE60225267T DE60225267D1 (en) | 2001-05-03 | 2002-05-02 | INK JET PRINTER AND METHOD |
US10/475,523 US7104634B2 (en) | 2001-05-03 | 2002-05-02 | Ink jet printers and methods |
US11/509,658 US7524042B2 (en) | 2001-05-03 | 2006-08-25 | Ink jet printers and methods |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US28809701P | 2001-05-03 | 2001-05-03 | |
US60/288,097 | 2001-05-03 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10475523 A-371-Of-International | 2002-05-02 | ||
US11/509,658 Division US7524042B2 (en) | 2001-05-03 | 2006-08-25 | Ink jet printers and methods |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002090119A2 true WO2002090119A2 (en) | 2002-11-14 |
WO2002090119A3 WO2002090119A3 (en) | 2003-05-15 |
Family
ID=23105725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IL2002/000346 WO2002090119A2 (en) | 2001-05-03 | 2002-05-02 | Ink jet printers and methods |
Country Status (7)
Country | Link |
---|---|
US (2) | US7104634B2 (en) |
EP (1) | EP1390207B1 (en) |
AT (1) | ATE387316T1 (en) |
AU (1) | AU2002258130A1 (en) |
DE (1) | DE60225267D1 (en) |
ES (1) | ES2302807T3 (en) |
WO (1) | WO2002090119A2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003059626A2 (en) | 2002-01-02 | 2003-07-24 | Jemtex Ink Jet Printing Ltd. | Ink jet printing apparatus |
WO2005110765A3 (en) * | 2004-05-10 | 2007-02-01 | Eastman Kodak Co | Jet printer calibration |
US7438396B2 (en) | 2002-11-25 | 2008-10-21 | Jemtex Ink Jet Printing Ltd. | Inkjet printing method and apparatus |
US7524042B2 (en) | 2001-05-03 | 2009-04-28 | Jemtex Ink Jet Printing Ltd. | Ink jet printers and methods |
US9636912B2 (en) | 2013-03-28 | 2017-05-02 | Hitachi Industrial Equipment Systems Co., Ltd. | Ink jet recording device |
EP3360683A4 (en) * | 2015-10-08 | 2019-06-26 | Hitachi Industrial Equipment Systems Co., Ltd. | Charge control-type inkjet printer and printing method using same |
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WO2005087495A1 (en) * | 2004-03-17 | 2005-09-22 | Kodak Graphic Communications Canada Company | Method and apparatus for controlling charging of droplets |
GB0505874D0 (en) * | 2005-03-22 | 2005-04-27 | Ten Cate Advanced Textiles Bv | Method for providing a localised finish on a textile article |
US7901026B2 (en) * | 2005-04-25 | 2011-03-08 | Ulvac, Inc. | Drop analysis system |
EP1924897B1 (en) * | 2005-09-15 | 2010-04-07 | Fujifilm Dimatix, Inc. | Waveform shaping interface |
US7360851B1 (en) * | 2006-02-15 | 2008-04-22 | Kla-Tencor Technologies Corporation | Automated pattern recognition of imprint technology |
JP2007256449A (en) * | 2006-03-22 | 2007-10-04 | Toshiba Corp | Droplet jetting inspecting device, droplet jetting device, and manufacturing method for coating body |
US8246138B2 (en) * | 2007-07-06 | 2012-08-21 | Hewlett-Packard Development Company, L.P. | Print emulation of test pattern |
DE102008019330B4 (en) | 2008-04-16 | 2023-01-26 | Voxeljet Ag | Process and device for the layered construction of models |
WO2010011202A1 (en) * | 2008-07-23 | 2010-01-28 | Hewlett-Packard Development Company, L.P. | Printing orifice health detection device |
US20120287198A1 (en) * | 2011-05-11 | 2012-11-15 | Fujifilm Dimatix, Inc. | Imaging Jetted Ink |
JP5960156B2 (en) * | 2011-11-07 | 2016-08-02 | 株式会社アルバック | Ink jet apparatus and droplet measuring method |
US8752924B2 (en) | 2012-01-26 | 2014-06-17 | Eastman Kodak Company | Control element for printed drop density reconfiguration |
US8454134B1 (en) | 2012-01-26 | 2013-06-04 | Eastman Kodak Company | Printed drop density reconfiguration |
US8714675B2 (en) | 2012-01-26 | 2014-05-06 | Eastman Kodak Company | Control element for printed drop density reconfiguration |
US8714674B2 (en) | 2012-01-26 | 2014-05-06 | Eastman Kodak Company | Control element for printed drop density reconfiguration |
US8764168B2 (en) | 2012-01-26 | 2014-07-01 | Eastman Kodak Company | Printed drop density reconfiguration |
US8807715B2 (en) | 2012-01-26 | 2014-08-19 | Eastman Kodak Company | Printed drop density reconfiguration |
US8540351B1 (en) | 2012-03-05 | 2013-09-24 | Milliken & Company | Deflection plate for liquid jet printer |
US9452602B2 (en) | 2012-05-25 | 2016-09-27 | Milliken & Company | Resistor protected deflection plates for liquid jet printer |
US9522527B2 (en) * | 2013-10-30 | 2016-12-20 | Hewlett-Packard Development Company, L.P. | Drop image sensing |
US10451482B2 (en) | 2014-02-14 | 2019-10-22 | Palo Alto Research Center Incorporated | Determination of color characteristics of objects using spatially modulated light |
US9952033B2 (en) | 2014-02-14 | 2018-04-24 | Palo Alto Research Center Incorporated | Spatial modulation of light to determine object length |
US9528925B2 (en) | 2014-02-14 | 2016-12-27 | Palo Alto Research Center Incorporated | Spatial modulation of light to determine object position |
US9207066B2 (en) | 2014-02-14 | 2015-12-08 | Palo Alto Research Center Incorporated | Spatial modulation of light to determine dimensional characteristics of objects in a flow path |
US9415600B2 (en) * | 2014-03-31 | 2016-08-16 | Xerox Corporation | System for detecting inoperative inkjets in three-dimensional object printing using a digital camera and strobe light |
US9114606B1 (en) * | 2014-04-07 | 2015-08-25 | Palo Alto Research Center Incorporated | Spatial light modulation method for determining droplet motion characteristics |
US9400174B2 (en) | 2014-04-07 | 2016-07-26 | Palo Alto Research Center Incorporated | Monitor for particle injector |
JP6657625B2 (en) * | 2014-09-05 | 2020-03-04 | ソニー株式会社 | Droplet sorting apparatus, drop sorting method and program |
JP7045805B2 (en) * | 2017-06-12 | 2022-04-01 | 株式会社日立産機システム | Inkjet recording device and inkjet recording method |
US11220104B2 (en) | 2017-12-22 | 2022-01-11 | Hewlett-Packard Development Company, L.P. | Reducing inkjet aerosol |
EP3705295B1 (en) * | 2019-03-06 | 2023-04-19 | Paul Leibinger GmbH & Co. KG Nummerier- und Markierungssysteme | Method for operating a cij printer with optical monitoring of printing quality, cij printer with optical monitoring of printing quality and method for teaching a cij printer with optical monitoring of printing quality |
EP4041444A1 (en) * | 2019-10-02 | 2022-08-17 | Piotr Jeuté | A method and system for controlling drop collisions in a drop on demand printing apparatus |
CN114714766A (en) * | 2022-04-01 | 2022-07-08 | 北京博示电子科技有限责任公司 | Detection device and ink-jet printer |
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US5969733A (en) | 1996-10-21 | 1999-10-19 | Jemtex Ink Jet Printing Ltd. | Apparatus and method for multi-jet generation of high viscosity fluid and channel construction particularly useful therein |
US6003980A (en) | 1997-03-28 | 1999-12-21 | Jemtex Ink Jet Printing Ltd. | Continuous ink jet printing apparatus and method including self-testing for printing errors |
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-
2002
- 2002-05-02 WO PCT/IL2002/000346 patent/WO2002090119A2/en active IP Right Grant
- 2002-05-02 US US10/475,523 patent/US7104634B2/en not_active Expired - Lifetime
- 2002-05-02 AU AU2002258130A patent/AU2002258130A1/en not_active Abandoned
- 2002-05-02 AT AT02728002T patent/ATE387316T1/en not_active IP Right Cessation
- 2002-05-02 DE DE60225267T patent/DE60225267D1/en not_active Expired - Lifetime
- 2002-05-02 EP EP02728002A patent/EP1390207B1/en not_active Expired - Lifetime
- 2002-05-02 ES ES02728002T patent/ES2302807T3/en not_active Expired - Lifetime
-
2006
- 2006-08-25 US US11/509,658 patent/US7524042B2/en not_active Expired - Lifetime
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US5969733A (en) | 1996-10-21 | 1999-10-19 | Jemtex Ink Jet Printing Ltd. | Apparatus and method for multi-jet generation of high viscosity fluid and channel construction particularly useful therein |
US6106107A (en) | 1996-10-21 | 2000-08-22 | Jemtex Ink Jet Printing Ltd. | Apparatus and method for multi-jet generation of high viscosity fluid and channel construction particularly useful therein |
US6003980A (en) | 1997-03-28 | 1999-12-21 | Jemtex Ink Jet Printing Ltd. | Continuous ink jet printing apparatus and method including self-testing for printing errors |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7524042B2 (en) | 2001-05-03 | 2009-04-28 | Jemtex Ink Jet Printing Ltd. | Ink jet printers and methods |
WO2003059626A2 (en) | 2002-01-02 | 2003-07-24 | Jemtex Ink Jet Printing Ltd. | Ink jet printing apparatus |
US7438396B2 (en) | 2002-11-25 | 2008-10-21 | Jemtex Ink Jet Printing Ltd. | Inkjet printing method and apparatus |
WO2005110765A3 (en) * | 2004-05-10 | 2007-02-01 | Eastman Kodak Co | Jet printer calibration |
US9636912B2 (en) | 2013-03-28 | 2017-05-02 | Hitachi Industrial Equipment Systems Co., Ltd. | Ink jet recording device |
EP3360683A4 (en) * | 2015-10-08 | 2019-06-26 | Hitachi Industrial Equipment Systems Co., Ltd. | Charge control-type inkjet printer and printing method using same |
Also Published As
Publication number | Publication date |
---|---|
WO2002090119A3 (en) | 2003-05-15 |
US20040130585A1 (en) | 2004-07-08 |
EP1390207A4 (en) | 2004-08-04 |
US7104634B2 (en) | 2006-09-12 |
ES2302807T3 (en) | 2008-08-01 |
EP1390207A2 (en) | 2004-02-25 |
AU2002258130A1 (en) | 2002-11-18 |
US20060284942A1 (en) | 2006-12-21 |
EP1390207B1 (en) | 2008-02-27 |
US7524042B2 (en) | 2009-04-28 |
DE60225267D1 (en) | 2008-04-10 |
ATE387316T1 (en) | 2008-03-15 |
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