EP1252018A1 - Verfahren zur regelung einer bahnspannung in einer rotationsdruckmaschine - Google Patents
Verfahren zur regelung einer bahnspannung in einer rotationsdruckmaschineInfo
- Publication number
- EP1252018A1 EP1252018A1 EP01909422A EP01909422A EP1252018A1 EP 1252018 A1 EP1252018 A1 EP 1252018A1 EP 01909422 A EP01909422 A EP 01909422A EP 01909422 A EP01909422 A EP 01909422A EP 1252018 A1 EP1252018 A1 EP 1252018A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- speed
- printing unit
- tension
- roller
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 23
- 230000008859 change Effects 0.000 claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims description 29
- 230000001105 regulatory effect Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 6
- 238000012937 correction Methods 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000002123 temporal effect Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/02—Conveying or guiding webs through presses or machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/10—Size; Dimensions
- B65H2511/17—Deformation, e.g. stretching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/10—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/30—Forces; Stresses
- B65H2515/31—Tensile forces
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S101/00—Printing
- Y10S101/42—Means for tensioning webs
Definitions
- the invention relates to a method for regulating a web tension in a rotary printing press according to the preamble of claim 1.
- EP 09 51 993 A1 discloses a drive for a rotary printing press which contains a register, a longitudinal extension of the printing web being determined from web tension values and operating values of the drives, and being compensated for by adjusting the circumferential register on the cylinders or the register rollers. A change in transverse elongation determined by a sensor for web width detection is fed back via a change in the setpoint value of the tension roller regulated to maintain web tension.
- DE 198 34 725 A1 shows several methods for regulating the web tension.
- the web tension is measured and with this measurement, the tension is returned to a setpoint or a setpoint range for the tension or to a calculated rotational speed for a lag or a lead of a drive relative to a second drive.
- the web tension is kept constant here by means of a simple web tension control or a web tension control expanded by a predefinable speed setpoint, with or without DROOP behavior.
- DE 29 51 246 C2 discloses a device of a printing machine by means of which it is possible to adjust the speed of a paper web at different points, in the example the drive of the printing unit on the one hand, and that of the drawing roller on the other hand, relative to one another.
- pulses can be determined by means of motor shaft encoders according to the speed, which are fed to a motor control circuit.
- the invention has for its object to provide a method for controlling a web tension in a rotary printing press.
- the tension / elongation behavior of the web changes as the web passes through the printing points and causes a tension reduction after the last printing unit, since the subsequent drawing roller still runs at the same peripheral speed as the last printing unit.
- the appropriate web tension level of the webs should be coordinated with one another, if possible, only via feed unit adjustments.
- the paper web expands both in the longitudinal and in the transverse direction in relation to the transport direction. This is reflected, in particular in multi-color printing with free path lengths between adjacent printing points, as widening of the printing image or a plurality of printing images arranged next to one another as the path through the printing points progresses.
- This so-called fan-out effect can be compensated for, as long as the effect at each printing point remains almost constant over time, at least in part, for example, by means of printing forms which diverge accordingly.
- the stretching behavior of the paper web is, however, subject to many influences such as the tension / elongation characteristics of the respective paper and thus the prevailing tension, the instantaneous humidity, the sensitivity to moisture, the penetration behavior and even the position of the roll during its manufacture in the reel, which, for example is reflected in different winding hardness.
- the elongation, both the longitudinal and the transverse expansion, is therefore not stationary because of the non-constant paper properties of the rolling paper web itself and because of changing and sometimes fluctuating operating parameters on the printing press.
- the paper web on the roll is subject to an uneven winding during manufacture, a location-dependent fluctuation in the modulus of elasticity, or other irregularities.
- these properties differ greatly from paper type to paper type.
- Even with the same type of paper the properties can differ considerably from roll to roll.
- a fluctuating web tension, changing printing speeds, fluctuations in the moistening or a roll change influence the elongation of the paper web, so that the elongation in the longitudinal and transverse directions are not temporally stationary with respect to the transport direction.
- a safe start-up process can be ensured, a basic setting can be established, and any fluctuations in the elongation, in the longitudinal and or transverse expansion, can be compensated for.
- the traction roller arranged behind the last printing unit is driven in the start-up phase (without ink and water) in a speed-controlled manner with respect to a printing unit and in a torque-controlled manner during production with respect to a predefinable setpoint.
- the speeds of the drawing roller and printing unit which are still measured in the production run, are used to control the feed unit.
- After reaching the production speed The existing difference between the peripheral speeds of the traction roller, which is generally leading in the production run, and the peripheral speed of the printing unit form a target value.
- a change in this difference suggests a change in the elongation, longitudinal but also transverse expansion of the printing material web, and thus a change in the image length on web B and / or in the transverse and longitudinal register.
- the torque control causes a brief change in the speed of the drive of the pull roller.
- the relative change in speed in turn now regulates the feed mechanism, which ultimately allows the torque-controlled draw roller to return to its "normal operation".
- a change in the elongation or tension is measured after the last printing unit, but regulation takes place on the intake mechanism, which covers the entire tension level
- there is no direct feedback on the pulling roller arranged after the printing unit but a change in the total tension level in the infeed unit can be reached via the difference in circumferential speeds without additional measurement and control expenditure.
- An almost stationary portion in the longitudinal expansion, e.g. B. for the purpose of presetting the printing press for the expected or measured operating and paper conditions, can e.g. B. by register adjustment on the cylinders, by register rollers or other facilities.
- both the first-mentioned requirement for a speed-controlled start-up as well as the addition of water and paint meet the second requirement for regulating changes in the fan-out effect or cross register and the image length while keeping the web tension after the tension roller largely constant without, for example, additional systems for image acquisition or the like being required to maintain the cross register.
- Figure 1 is a schematic representation for guiding a web from the infeed unit via four printing units and a second pull roller to a funnel infeed roller.
- Fig. 2 is a schematic representation of the web tension levels in continuous printing.
- Fig. 1 shows schematically the course of a path B, z. B. a printing material web B or a paper web B, on its way through a printing press, in particular a web-fed rotary printing press.
- the web B runs in the transport direction T from the roll changer 01 via a feed unit 02 with a pull roller 03 through four printing units 06 to 09 to a second pull roller 11.
- the second pull roller 11 is followed, for example, by turning bars, cutting knives, further pull or guide rollers (not shown) and ultimately a hopper feed roller 12.
- the main pull rollers 03 and 11 are each with their own drive 13 and 14 and a drive control 16; 17 equipped.
- the voltages S1; S2; S3 and S4 of web B measured. This can be done, for example, using measuring rollers or the power consumption of the drive motors of the traction means.
- the starting point for the adjustment of the web tensions are, in particular if in web operation at the funnel inlet on the funnel infeed roller 12 several webs B are combined to form a multilayer strand, the absolute and relative tensions S4 of the individual webs B on the funnel infeed roller 12 to one another (several webs in FIG. 1 ) indicated. Accordingly, the tension of the web B is adjusted starting from the desired level on the hopper inlet roller 12. The level of the web tension is preferably determined by adjustment on the feed mechanism 02. The web tension is also advantageously changed by changing the tension S2 at the feed unit 02. For tensioning the web B, the first pull roller 03 is therefore operated with a lag compared to the machine speed. In production, d. H.
- the second pull roller 11 is usually driven with an advance compared to the machine speed.
- the machine speed is measured, for example, on a cylinder 18, for example a transfer cylinder 18 of the last printing unit 09.
- the peripheral speed u09 can, for example, via the angle of rotation or phase position ⁇ 09 or the temporal change in the angle of rotation or phase position ⁇ 09 or the position of a drive 19 or else by means of a marking and a detector on the transfer cylinder 18 or another cylinder , such as B. forme cylinder or impression cylinder can be determined.
- the pull roller 03 and the hopper inlet roller 12 and, if appropriate, drives located between the second pull roller 11 and the hopper inlet roller 12 can be used for operation be regulated with production speed and / or rotational position.
- the pull roller 03 can be regulated in such a way that the tension S2 between the feed unit 02 and the first printing unit 06 is continuously returned to a desired value.
- the pull roller 11 is in the print-on position, without water and / or paint, i.e. H. in the case of dry web B, regulated with regard to its peripheral speed u11 as a controlled variable and operated with torque control during production with water and ink.
- the tension or elongation behavior of the web B changes during passage through the individual printing points of the printing units 06 to 09 and causes a reduction in the tension S3 after the last printing unit 09, since for the time being the traction roller 11 still with the same peripheral speed runs u11 as the last printing unit 09.
- the traction roller 11 is now in the following and operated under torque control during production.
- a basic setting of the tensions during continuous printing is produced, for example, via the web tension, speed or position-controlled draw roller 03, the likewise controlled hopper feed roller 12 and / or dancer rollers, not shown.
- This usually The tension-controlled state of the web B already takes into account a stationary (expected or measured) portion of a change in the length of the web B which occurs after and during the passage through the printing units 06 to 09 with a retardation of the tension roller 03 and an advance of the tension roller 11 in relation to the machine speed due to the effects of moisture.
- Symmetrical and stationary fan-out designs in the cross register can also be taken into account here.
- the peripheral speeds u09 of the printing group 09 and u11 of the drawing roller 11 can be carried out directly on one of the cylinders assigned to the printing group 09, for example directly on the transfer cylinder 18 or directly on the drawing roller 11, or by means of an encoder or a rotary encoder arranged on the drive 14 or 19 be determined.
- the second peripheral speed u11 or phase position ⁇ 11 (#> 11) can also be determined on another roller or another cylinder in the transport direction behind the last printing unit 09, eg. B. by means of a rotary encoder on an additional measuring roller.
- the deviation from the reference value ⁇ u-Soll can be superimposed, for example, as a disturbance variable ⁇ on a setpoint generator of the drive control 16.
- the drive control 16 of the pull roller 03 can be torque-controlled, for example, with the voltage S2 being fed back.
- a path of the web B over a corresponding measuring roller 21 for measuring the tension S2 of the web B is shown in broken lines in FIG. 1.
- the setpoint generator of the drive control 16 receives the disturbance variable ⁇ corresponding to the deviation from the reference value ⁇ u-Soll, for example as a correction variable ⁇ S2 superimposed.
- Such a correction quantity ⁇ S2 can be taken, for example, from a stored curve or can also be carried out iteratively by raising or lowering the voltage S2 until the difference ⁇ u between the circumferential speeds u09 and u11 again corresponds to the reference value ⁇ u target.
- the peripheral speeds u09 and u11 are to be equated with the speed u09; u11 of the path B (with curvature of the path B on the side of the contact) if the slip is negligibly small.
- the speeds u09; u11, or their difference ⁇ u, the path B, the disturbance ⁇ can be used for the regulation of the voltage S2 if they are obtained in a different way. It is essential, however, that the speed u09 the machine speed or the speed u09 of the web B in the area of the printing units 06; 07.08; 09 and the speed u11 represents the speed u11 of the web B behind the last printing unit 09.
- the design of the pull roller 11 during torque printing is advantageous as torque-controlled.
- a DROOP behavior is a load-dependent change in the nominal value of a peripheral speed or a speed, which both a change in the tension of the web B, z. B. S4, as well as a change in peripheral speed, e.g. B. u11, taken into account.
- a correction variable ⁇ S2 is superimposed as an offset on the setpoint S2 target for the web tension S2, which together with the actual value of the tension S2 results in a corresponding lag of the pull roller 03 using the DROOP function.
- the pull roller 03 or the feed mechanism 02 is regulated, it is essential that the setpoint for the drive control 16 is a disturbance variable ⁇ determined from the difference ⁇ u, for example as a correction variable ⁇ S2 of the desired one Voltage S2 is superimposed. If necessary or under certain circumstances, the machine speed can be determined on another printing unit 06 to 08 instead of the last printing unit 09 in the transport direction T with the peripheral speed u09.
- the difference .DELTA.u and the reference value .DELTA.u target are then to be determined, for example, from u11 and u08 etc. and processed as disturbance variable .DELTA.
- the angular positions of one of the printing units 06 to 09 and the pull roller 11 can also be used, as explained.
- strain ⁇ changes, the relative angular position thus deviates.
- This difference value can then be used as an absolute value or as an absolute value with a sign as a disturbance variable ⁇ for the control of the drive 13.
- the method is suitable for printing presses with stacked or side-by-side printing units combined with bridge or H units, for rubber-to-rubber or rubber-to-steel printing units and other combinations.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Rotary Presses (AREA)
Description
Claims
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10004933 | 2000-02-04 | ||
| DE10004933 | 2000-02-04 | ||
| DE10027471A DE10027471A1 (de) | 2000-02-04 | 2000-06-02 | Verfahren zur Regelung einer Bahnspannung in einer Rotationsdruckmaschine |
| DE10027471 | 2000-06-02 | ||
| PCT/DE2001/000012 WO2001056792A1 (de) | 2000-02-04 | 2001-01-05 | Verfahren zur regelung einer bahnspannung in einer rotationsdruckmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1252018A1 true EP1252018A1 (de) | 2002-10-30 |
| EP1252018B1 EP1252018B1 (de) | 2003-07-02 |
Family
ID=26004196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01909422A Expired - Lifetime EP1252018B1 (de) | 2000-02-04 | 2001-01-05 | Verfahren zur regelung einer bahnspannung in einer rotationsdruckmaschine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6782818B2 (de) |
| EP (1) | EP1252018B1 (de) |
| JP (1) | JP3848162B2 (de) |
| AT (1) | ATE244142T1 (de) |
| WO (1) | WO2001056792A1 (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10303122B4 (de) * | 2002-09-27 | 2005-10-06 | Koenig & Bauer Ag | Verfahren zur Regelung der Bahnspannung eines Mehrbahnsystems |
| DE10333626A1 (de) * | 2003-07-24 | 2005-02-17 | Robert Bürkle GmbH | Vorrichtung zum Bedrucken von flächigen Werkstücken |
| NL1029042C2 (nl) * | 2005-05-13 | 2006-11-14 | Gear Chain Ind Bv | Inrichting voor het tot voorbij de elasticiteitsgrens oprekken van de schalmen van een transmissieketting. |
| JP4722631B2 (ja) * | 2005-09-07 | 2011-07-13 | 大日本スクリーン製造株式会社 | 印刷装置および張力制御方法 |
| DE102006004307B4 (de) * | 2006-01-31 | 2013-08-14 | Windmöller & Hölscher Kg | Verfahren zum Messen und Einstellen der Bahnspannung zwischen Farbwerken einer Mehrfarbenmaschine |
| JP4556966B2 (ja) * | 2007-04-27 | 2010-10-06 | トヨタ自動車株式会社 | ウェブの搬送制御方法、及び搬送制御装置 |
| DE102008056132A1 (de) * | 2008-11-06 | 2010-05-12 | Robert Bosch Gmbh | Verfahren zur Bahnspannungseinstellung |
| EP2327647A1 (de) * | 2009-11-25 | 2011-06-01 | Baumüller Anlagen-Systemtechnik GmbH & Co. KG | Verfahren zum Betrieb wenigstens einer eine Materialbahn verarbeitenden Maschine sowie zugehörige Druckmaschine oder andere Maschine |
| JP5549231B2 (ja) * | 2010-01-13 | 2014-07-16 | セイコーエプソン株式会社 | 印刷装置 |
| JP2011143983A (ja) * | 2010-01-13 | 2011-07-28 | Seiko Epson Corp | ロール紙供給装置及びそれを備えた印刷装置 |
| DE102010012291A1 (de) * | 2010-03-23 | 2011-09-29 | Robert Bosch Gmbh | Verfahren zur Bestimmung wenigstens eines Reglerparameters eines Bahnspannungs-Regelglieds |
| US20120189364A1 (en) * | 2011-01-21 | 2012-07-26 | Andrew Peter Kittleson | Reducing drag on rotatable web drive member |
| DE102012106967B4 (de) | 2012-07-31 | 2015-03-05 | Océ Printing Systems GmbH & Co. KG | Verfahren zur Ausführung einer Pausenfunktion während des Druckbetriebs bei einem Tintendruckgerät |
| NL2024873B1 (nl) | 2020-02-10 | 2021-02-18 | Eska B V | Werkwijze voor het vervaardigen van tweezijdig gelamineerd karton, alsmede tweezijdig gelamineerd karton vervaardigd door middel van een dergelijke werkwijze. |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3025791A (en) | 1957-09-09 | 1962-03-20 | Champlain Company Inc | Variable web tension for uniform layoff |
| DE1761432C2 (de) * | 1968-05-18 | 1975-01-16 | Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach | Vorrichtung zum Konstanthalten der Spannung einer durch eine Druckmaschine laufenden Werkstoffbahn |
| US3707650A (en) * | 1969-05-22 | 1972-12-26 | Westinghouse Electric Corp | Protective system for series capacitors |
| FR2320185A1 (fr) * | 1975-08-08 | 1977-03-04 | Chambon Machines | Dispositif de reperage des couleurs pour impression sur materiaux legers |
| US4271379A (en) | 1978-12-29 | 1981-06-02 | Harris Corporation | Web fed printing press motor control |
| US4435883A (en) * | 1981-09-28 | 1984-03-13 | Litton Industrial Products, Inc. | Stretch ratio control circuit for multiple station web stretching apparatus |
| DE3639992C1 (en) | 1986-11-22 | 1988-05-11 | Lenze Gmbh & Co Kg Aerzen | Device for regulating the web tension for a roll take-off in winding machines |
| NL1000128C2 (nl) | 1995-04-12 | 1996-10-15 | Stork Contiweb | Werkwijze voor het berekenen en regelen van de rek van een bewegende materiaalbaan en inrichting voor toepassing van de werkwijze. |
| US5904093A (en) * | 1997-08-07 | 1999-05-18 | Heidelberger Druckmaschinen Ag | Apparatus and method for changing images during operation of a printing press |
| JP3180291B2 (ja) | 1997-11-10 | 2001-06-25 | 株式会社ミヤコシ | フォーム印刷機における用紙テンション制御装置 |
| DE59902522D1 (de) | 1998-04-22 | 2002-10-10 | Wifag Maschf | Registerhaltiger Antrieb eines Druckzylinders oder einer Schnittregisterwalze einer Rotationsdruckmaschine |
| DE19834725A1 (de) | 1998-07-31 | 2000-02-03 | Wifag Maschf | Bahnspannungsregeleinrichtung |
| JP2002531304A (ja) * | 1998-12-04 | 2002-09-24 | ケーニツヒ ウント バウエル アクチエンゲゼルシヤフト | 見当を調整する方法 |
| CH694219A5 (fr) * | 2000-02-10 | 2004-09-30 | Bobst Sa | Procédé de mise en repérage automatique d'impressions dans une machine rotative et dispositif pour la mise en oeuvre du procédé. |
| DE10035787C2 (de) * | 2000-07-22 | 2002-05-16 | Koenig & Bauer Ag | Verfahren zur Regelung einer Bahnspannung |
-
2001
- 2001-01-05 WO PCT/DE2001/000012 patent/WO2001056792A1/de not_active Ceased
- 2001-01-05 JP JP2001556665A patent/JP3848162B2/ja not_active Expired - Fee Related
- 2001-01-05 US US10/181,945 patent/US6782818B2/en not_active Expired - Fee Related
- 2001-01-05 EP EP01909422A patent/EP1252018B1/de not_active Expired - Lifetime
- 2001-01-05 AT AT01909422T patent/ATE244142T1/de not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0156792A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US6782818B2 (en) | 2004-08-31 |
| EP1252018B1 (de) | 2003-07-02 |
| JP3848162B2 (ja) | 2006-11-22 |
| WO2001056792A1 (de) | 2001-08-09 |
| ATE244142T1 (de) | 2003-07-15 |
| JP2003521399A (ja) | 2003-07-15 |
| US20030015109A1 (en) | 2003-01-23 |
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Legal Events
| Date | Code | Title | Description |
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