EP1069062B1 - Dispositif pour surveiller le transport d'exemplaires plats - Google Patents

Dispositif pour surveiller le transport d'exemplaires plats Download PDF

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Publication number
EP1069062B1
EP1069062B1 EP00114164A EP00114164A EP1069062B1 EP 1069062 B1 EP1069062 B1 EP 1069062B1 EP 00114164 A EP00114164 A EP 00114164A EP 00114164 A EP00114164 A EP 00114164A EP 1069062 B1 EP1069062 B1 EP 1069062B1
Authority
EP
European Patent Office
Prior art keywords
folder
copies
sensors
sensor
folding
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.)
Expired - Lifetime
Application number
EP00114164A
Other languages
German (de)
English (en)
Other versions
EP1069062A3 (fr
EP1069062A2 (fr
Inventor
Francoise Marie Foret
Dominique Benoit Rousseau
Didier Marcel Rousseau
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.)
Goss International Montataire SA
Original Assignee
Heidelberger Druckmaschinen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19933287A external-priority patent/DE19933287A1/de
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1069062A2 publication Critical patent/EP1069062A2/fr
Publication of EP1069062A3 publication Critical patent/EP1069062A3/fr
Application granted granted Critical
Publication of EP1069062B1 publication Critical patent/EP1069062B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H43/00—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
    • B65H43/02—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable detecting, or responding to, absence of articles
    • 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
    • B65H2511/30—Numbers, e.g. of windings or rotations
    • 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
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • 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
    • B65H2513/40—Movement
    • 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
    • B65H2513/50—Timing
    • B65H2513/512—Starting; Stopping

Definitions

  • the invention relates to a device for monitoring the transport flat copies, for example in a folder from a material web severed and there to be folded longitudinally and / or transversely.
  • EP 0847 857 A1 relates to an adjusting device in front of a cylinder a traverse arranged in a rotary printing machine. There is one on the traverse Measuring device displaceable axially to the lateral surface of the cylinder by means of a holder.
  • the adjustment aid has a light beam on the cylinder projecting optical element and at least one optical receiver, which is a reflected from the cylinder Beam of light receives.
  • the optical receiver comprises an optoelectronic one Sensor that is used in conjunction with evaluation electronics to record the Position of the reflected light beam on the sensor is suitable.
  • This device is primarily used to align the surface of the cylinder scanning optical measuring device.
  • EP 0753 409 relates to a sheet-fed printing machine with a delivery the top of which continuously fed sheets are to be deposited.
  • a traversing measuring device one at the front edge of the To scan sheets of applied pressure control strips. For that, they are on one Traverse moveable measuring device assigned to arch support which prevent that the sheet promoted during the execution of a measuring process on the Top of the stack.
  • US 3,815,895 discloses a paper jam detection system for folders, one of which Role rotation are subordinate. Selected within the folder Locating photocells detect both absent and incorrectly also incorrectly existing copies along the conveyor path through the Folder.
  • a timing control unit which is synchronous to the folder works, generates signals that trigger detection when one is on a particular one The location of the expected copy is actually there and if one is on one Specimen not to be expected at a specific point on the conveyor path at this point actually does not arrive.
  • the signals from the photocells will match those the timing control unit logically linked, supplied to a logic circuit, the stops the folder if necessary.
  • the system also recognizes when in Paper jam detection system one of the photocells has failed.
  • DE 39 35 056 A1 has a process for controlling the sheet throughput in a folding machine Object.
  • the Signals evaluated by sensors arranged on the sheet passage are.
  • Each folder is one depending on the length of the folder prescribed Defines the number of sheets that are in the folder at the same time should.
  • By evaluating at least the signals of an inlet-side sensor and the outlet side sensor of the folding unit determines the number of sheets that are in the folder.
  • An error message is then issued if the number of sheets in the folder of which prescribed Number differs.
  • the invention is based on the object To provide paper flow monitoring system, which at slow paper feed speeds responds to irregularities in specimen transport.
  • Sensors in the folder depending on the selected folder mode based on the copy progression validated along the funding path i.e. one on electronic Declaration of validity of a sensor signal can be made at the sensors located at the beginning of the specimen conveying path after just a few copies entered into the folder after the sensor in question Can detect the earliest at the earliest, depending on the preselected transport path set folding mode.
  • Validation arranged earlier in the item transport path Sensors takes place after a lower number of copies that can be preset the validation of later sensors arranged in the specimen transport path corresponding to a larger number of copies entered in the folder the distance covered up to the validating sensor.
  • the limit values that enable validation are on the monitoring unit specifiable and stored there, so that they are always up to date for the necessary calculations be available.
  • the difference is in the monitoring unit according to the present method of the number of copies detected per validated sensor and from the folder number of copies located is determined continuously, with a maximum permissible Difference can be specified on the monitoring unit. This can be dependent from the substrate parameters, copy thickness and empirical values to set the monitoring system according to the order.
  • sensor pairs that consist of a transmit and a Receiving part exist. These are spaced from each other, being between transmit and receiving part of the specimen conveying path runs.
  • the cutting cylinder or the encoder associated with the drive of the folder can be used as a proximity switch or encoders such as rotary encoders can be configured, for example, per revolution a pulse to the monitoring unit of the unit concerned submit, which is summed up there.
  • Folders can preferably be monitored by means of the solution according to the invention, which are subordinate to a roll rotation, the monitoring unit each according to the copy path required for the selected folding mode Validated sensors and the sensor signals validated in this way for the number who compares the copies with the one that entered the folder. Out this comparison made in real time can be a shutdown condition in the Folder and / or derived for the entire rotation.
  • 1 shows the basic structure of a folder with the respective copy conveying paths assigned sensor pairs shown.
  • the material web 15 transported in the conveyor plane 16 passes through Cutting cylinder pair 2b, 17, consisting of a cutting cylinder 2b and one with this cooperating slot cylinder 17. There are the individual copies separated from the material web 15 by cross cutting.
  • An encoder 2a can optionally be assigned to the cutting cylinder 2b, which per revolution of the cutting cylinder 2b to the monitoring unit 12 transmitted. For each revolution of the cutting cylinder 2b, exactly one copy of the leading end of the web of material 15 separated, whereby the number of in Folder 30 located copies is easy to determine.
  • the number of in the folder 30 entering copies can alternatively via a rotary encoder 14 are determined, the revolutions of the folder 30 driving Drive motor 13 detects what is also the number of in the folder has entered specimens determined.
  • the values for the copies entering the folder are continuously determined and are stored in the monitoring unit 12.
  • a folding knife cylinder 18 assigned sensor pair 3 monitors.
  • the jaw cylinder 19 are two further transport or gripper cylinders 20, or 21 assigned, which on the one hand form a further transverse fold in the copy and, on the other hand, the copies of the circumference of the jaw cylinder 19 alternately decrease and in this way cause a distribution of the copy flow.
  • An upper conveyor path 22 extends behind the upper transport cylinder 20, secured by a pair of sensors 4 to the upper second longitudinal folding device 10b.
  • the lower transport cylinder 21 is a lower conveying path 23 assigned, also secured by a pair of sensors 5, via which the copies can be fed to a further second longitudinal folding device 10a.
  • the two second longitudinal folding devices 10a, 10b each contain a folding knife 27, which is not closer to the fold back on the copy by pushing in between here shown folding rollers. With the one located over the folding knife 27 Double circles the drive of the folding knife 27 is indicated in a simplified manner.
  • the upper second longitudinal fold module 10b is a paddle wheel configuration 25, 26 downstream, both for each paddle wheel 25 or 26 the entry of the specimens by means of a pair of sensors 6 or 7 as well as leaving the specimens of the paddle wheels 25, 26 can be monitored by means of sensor pairs 8 and 9, respectively.
  • the specimens laid out in shingled formation leave the folder 30 to a stacker or a packaging machine for further processing to become.
  • the conveying path 28 indicates the transport path - shown here in greater line width to which the material web 15 through the cutting cylinder pair 2b, 17th accept separated copies in double parallel fold mode.
  • the copies are made by those working together Folding cylinders 18, 19 and 20 folded in parallel.
  • the promotion the specimens take place along the upper conveyor path 22, the upper second Longitudinal folding device 10b is inactive and allows the cross-folded copies to pass through. These can then either in a lower paddle wheel 26 or an upper paddle wheel 25 are passed through which a scaled display of the specimens can be done.
  • the sensor pairs 3, 4, 6, 7, 8, and 9 are in detection mode switched while the pair of sensors 5 on the lower conveyor path 23 such is to be switched that this has to detect the absence of specimens.
  • one of the paddle wheels 25 or 26 or both paddle wheels can the product output take.
  • the sensors 7, 8 in the paddle wheel module of the folder 30 are validated in such a way that that they recognize a copy at the earliest and send a valid signal, if one of the distances from the cutting cylinder pair 2b, 17 to the respective Sensor corresponding number of copies is located in the folder 30. This applies analog for sensors 6 and 9, provided there is also a product delivery via the lower one Paddle wheel 25 is provided.
  • sensors 3, 4, 7, 8 and possibly 6 and 9 are dependent from the copy progression of the copies through the folder 30, so that the Signals from the sensors are only considered valid when the respective Depending on the folding mode, detect a sensor at the earliest or not can.
  • FIG. 3 shows a specimen conveying path corresponding to the second longitudinal fall mode shown, with the copy flow divided behind the jaw cylinder.
  • the paddle wheel module is inactive, Accordingly, the sensors provided there are inactive, i. e. on detection the absence of copies switched; on the other hand, they are the funding path 29 of the sensor pairs 3, 4 and 5 assigned to the specimens upon detection of the presence of the copies switched, but on the condition that a validity of the specimens detected by the sensor pairs 3, 4 and 5 only from the time can take place from which the respective sensor pairs 1, 3, 4 and 5 at the earliest Recognize the copy according to the copy progression through the folder can.
  • the number of folders 30 entering copies via encoder 2a or 14, the cutting cylinder 2b or assigned to the drive 13 of the folder 30 can be determined as above already spelled out.
  • the monitoring unit 12 is initialized first performs a self-test 101 and the printer activates it optically or also acoustically.
  • the given Folder configuration becomes the set folding mode, for example double parallel folding 28 or second longitudinal fold mode 29 detected; this is done in step 102; depending on the selected folding mode 28 or 29, the sensor activation 103 those sensors 3, 4, 5, 6, 7, 8 or 9 activated on the selected folding mode 28 or 29 corresponding conveyance path of the copies through the folder 30 lie.
  • memory 104 which is an error detection routine 104.1 is assigned.
  • the number of copies is determined in the counting stage 105 has entered the folder 30.
  • a comparison operation 108 is then carried out using the sensors selected depending on the folding mode between the number of copies in the folder 30 and that on the respective Sensor detected number of copies performed. Results in the in Real time comparison operation 109 performed no difference, again becomes the signal validity request 106 branches to check if the validation threshold was actually exceeded or not.
  • the comparison operation 109 yields a smaller number of by Sensors 3, 4, 5, 6, 7, 8 or 9 detected copies than in the folder 30 have occurred, it is first determined via a sensor validity query 111, whether this result came from a previously validated sensor. if it if the sensor is not validated, it branches back to Validation query 106; the corresponding sensor was validated correctly, A paper jam 111.1 was detected, which was triggered by a shutdown command 112 switching off the drive 13 of the folder 30 and / or the rotation brings about.
  • the monitoring unit 112 When the command 113 is reached, the monitoring unit 112 has the monitoring run through the controlling program.
  • the system can to monitor himself, such that when a number of copies are found on a sensor that is larger than the one that actually entered the folder 30 Number of copies, the function monitoring of the encoder 2a or 14 is displayed becomes.
  • the monitoring system can be used in any folder and is next to the specimen jam detection in slow speed or when entering the web also suitable for normal operating speeds and can be configured accordingly.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Controlling Sheets Or Webs (AREA)

Claims (16)

  1. Procédé pour surveiller le transport d'exemplaires plats, notamment dans un appareil de pliage qui est placé à la suite d'une machine à imprimer rotative, des détecteurs (3, 4, 5, 6, 7, 8 et 9) détectant la présence ou l'absence d'exemplaires étant tout d'abord sélectionnés en fonction du mode de pliage (28, 29) de l'appareil de pliage (30) , et le procédé présentant ensuite les étapes de procédé suivantes :
    la détermination, par des capteurs (2a, 14), du nombre d'exemplaires ayant pénétré dans l'appareil de pliage (30) pendant la marche en avance lente ou pendant une phase d'insertion de bande, et
    la comparaison du nombre d'exemplaires présents dans l'appareil de pliage (30) avec le nombre d'exemplaires détectés par les détecteurs (3, 4, 5, 6, 7, 8 et 9) sélectionnés, des signaux de détecteur des détecteurs (3, 4, 5, 6, 7, 8 et 9), validés par voie électronique, en fonction du mode de pliage (28, 29) de l'appareil de pliage, sur la base de la progression des exemplaires, c'est à dire du chemin parcouru, le long des parcours de transport, étant déclarés valables, et une validation étant effectuée déjà au début du transport des exemplaires à travers l'appareil de pliage (30), après un faible nombre d'exemplaires transportés dans l'appareil de pliage (30).
  2. Procédé selon la revendication 1, caractérisé en ce qu'est effectuée une validation de détecteurs (6, 7, 8 et 9) situés plus en aval le long du parcours de transport, après un grand nombre d'exemplaires transportés dans l'appareil de pliage (30).
  3. Procédé selon la revendication 1, caractérisé en ce qu'il est possible de déterminer le nombre des exemplaires transportés dans l'appareil de pliage (30), au moyen d'un capteur (2a) associé à un cylindre (2b).
  4. Procédé selon la revendication 1, caractérisé en ce qu'il est possible de déterminer le nombre des exemplaires transportés dans l'appareil de pliage (30), au moyen d'un capteur (14) associé à l'entraínement (13) de l'appareil de pliage (30).
  5. Procédé selon les revendications 3 ou 4, caractérisé en ce que le nombre déterminé des exemplaires est transmis à une unité de surveillance et de traitement (12) .
  6. Procédé selon la revendication 1, caractérisé en ce qu'en fonction du mode de pliage (28, 29) de l'appareil de pliage (30), ayant été sélectionné, on détermine, par détecteur (3, 4, 5, 6, 7, 8 ou 9), le rapport du nombre d'exemplaires ayant pénétré dans l'appareil de pliage (30) relativement au nombre des exemplaires comptés respectivement au niveau de la position du détecteur correspondant.
  7. Procédé selon la revendication 1, caractérisé en ce que l'on détermine, par position de détecteur, la différence maximale admissible entre le nombre d'exemplaires ayant pénétré dans l'appareil de pliage (30) et les exemplaires apparaissant effectivement au niveau de la position du détecteur (3, 4, 5, 6, 7, 8 et 9).
  8. Procédé selon la revendication 1, caractérisé en ce que la validation des détecteurs respectifs (3, 4, 5, 6, 7, B et 9) est effectuée en fonction du fait que le nombre minimal d'exemplaires transportés a été atteint ou non au niveau de la position respective du détecteur (3, 4, 5, 6, 7, 8 et 9) considéré.
  9. Procédé selon la revendication 1, caractérisé en ce que la comparaison (109) du nombre théorique d'exemplaires avec le nombre d'exemplaires effectivement détecté par position de détecteur, est effectués en temps réel.
  10. Dispositif pour la mise en oeuvre du procédé selon la revendication 1, comprenant des détecteurs (3, 4, 5, 6, 7, 8 et 9) qui sont réalisés sous la forme de paires de détecteurs englobant une partie émetteur et une partie récepteur (1a, 1b), et sont placés le long des parcours de transport des exemplaires, suivant le mode de pliage (28, 29) de l'appareil de pliage (30), en amont et en aval d'une paire de cylindres de coupe (2b, 17), de cylindres de transport (20), de dispositifs de pliage longitudinal (10a, 10b) et d'agencements de tambours en étoile (25, 26) de sortie des exemplaires, caractérisé en ce qu'il est prévu une unité de surveillance (12) dans laquelle les signaux de détecteur des détecteurs (3, 4, 5, 6, 7, 8 et 9) sont déclarés valables, par voie électronique, en fonction du mode de pliage (28, 29) de l'appareil de pliage (30), sur la base de la progression des exemplaires, c'est à dire du chemin parcouru, le long des parcours de transport, en ce que l'on détermine également, par des capteurs (2a, 14), le nombre d'exemplaires ayant pénétré dans l'appareil de pliage pendant la marche en avance lente ou pendant une phase d'insertion de bande, après un faible nombre d'exemplaires ayant pénétré dans l'appareil de pliage, et en ce que ce nombre est comparé au nombre d'exemplaires présents dans l'appareil de pliage et ayant été détectés par les détecteurs (3, 4, 5, 6, 7, 8 et 9) sélectionnés.
  11. Dispositif selon la revendication 10, caractérisé en ce que les parties récepteur et les parties émetteur des détecteurs (3, 4, 5, 6, 7, 8 et 9) sont disposés des deux côtés du plan de transport (16) de la bande de matériau (15) et des exemplaires.
  12. Dispositif selon la revendication 10, caractérisé en ce que le capteur (2a) est réalisé en tant que détecteur de proximité.
  13. Dispositif selon la revendication 10, caractérisé en ce que le capteur (14) est réalisé en tant que capteur de rotation sur l'entraínement (13) de l'appareil de pliage (30).
  14. Dispositif selon la revendication 10, caractérisé en ce que le mode de pliage (28, 29) actuel de l'appareil de pliage (30) est transmis à l'unité de surveillance (12) par la position des composants de pliage au niveau des cylindres (18, 19) conduisant le papier.
  15. Appareil de pliage pour une machine à imprimer rotative, dans laquelle sont traitées des bandes de matériau (15), l'appareil de pliage (30) pouvant fonctionner dans au moins deux modes de pliage (28, 29), caractérisé par un dispositif selon la revendication 10.
  16. Machine à imprimer rotative pour traiter des bandes de matériau (15), comprenant un appareil de pliage (30), l'appareil de pliaqe (30) pouvant fonctionner dans au moins deux modes de pliage (28, 29), caractérisée par un dispositif selon la revendication 10.
EP00114164A 1999-07-15 2000-07-12 Dispositif pour surveiller le transport d'exemplaires plats Expired - Lifetime EP1069062B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19933287A DE19933287A1 (de) 1999-07-15 1999-07-15 Vorrichtung zur Überwachung des Transportes flächiger Exemplare
DE19933287 1999-07-15
FR0004400 2000-04-06
FR0004400A FR2796331B3 (fr) 1999-07-15 2000-04-06 Procede et dispositif de surveillance du transport de produits imprimes ou analogues, ainsi que plieuse et machine a imprimer rotative en faisant application

Publications (3)

Publication Number Publication Date
EP1069062A2 EP1069062A2 (fr) 2001-01-17
EP1069062A3 EP1069062A3 (fr) 2002-01-30
EP1069062B1 true EP1069062B1 (fr) 2004-01-02

Family

ID=26054207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00114164A Expired - Lifetime EP1069062B1 (fr) 1999-07-15 2000-07-12 Dispositif pour surveiller le transport d'exemplaires plats

Country Status (3)

Country Link
US (1) US6446961B1 (fr)
EP (1) EP1069062B1 (fr)
AT (1) ATE257120T1 (fr)

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DE10116346B4 (de) * 2001-04-02 2006-03-02 Koenig & Bauer Ag Falzapparat
DE10207869A1 (de) * 2002-02-23 2003-09-04 Heidelberger Druckmasch Ag Falzapparat einer bahnverarbeitenden Druckmaschine mit Transportbandüberwachungsvorrichtung
US6884209B2 (en) * 2002-09-10 2005-04-26 American Trade Names & Patents Llc Apparatus and method for folding and stacking napkins
US7008364B2 (en) * 2002-09-27 2006-03-07 C.G. Bretting Manufacturing Company, Inc. Sheet folding apparatus and method
JP2005314090A (ja) * 2004-04-30 2005-11-10 Komori Corp 折機の平行折装置
DE102008029966A1 (de) * 2008-06-26 2009-12-31 Manroland Ag Rollendruckmaschine
US10449746B2 (en) 2016-06-27 2019-10-22 C. G. Bretting Manufacturing Co., Inc. Web processing system with multiple folding arrangements fed by a single web handling arrangement

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Publication number Priority date Publication date Assignee Title
US3815895A (en) * 1970-12-07 1974-06-11 Harris Intertype Corp Jam detector system
US4085928A (en) * 1976-01-02 1978-04-25 Arthur Sussman Folding system with photoelectric detection means
JP2758003B2 (ja) * 1988-09-30 1998-05-25 株式会社リコー 画像形成装置
DE3935056C2 (de) * 1989-10-20 1996-07-11 Stahl Gmbh & Co Maschf Verfahren zur Kontrolle des Bogendurchlaufs in einer Falzmaschine und Vorrichtung zur Durchführung des Verfahrens
DE4125465A1 (de) * 1991-08-01 1993-02-04 Zirkon Druckmaschinen Gmbh Transportvorrichtung zum ueberfuehren von quergefalzten druckprodukten zum dritten falz
US5217220A (en) * 1991-08-19 1993-06-08 Carlson Herbert L Diverter for a printing press
US5262637A (en) * 1992-08-07 1993-11-16 Motorola, Inc. Reprographic media detector and methods for making and using
JPH0885671A (ja) * 1994-09-16 1996-04-02 Toshiba Corp 画像形成装置
DE19525492C1 (de) 1995-07-13 1996-12-12 Roland Man Druckmasch Vorrichtung zum Messen im Ausleger einer Bogendruckmaschine
KR0171545B1 (ko) * 1996-01-12 1999-05-01 김광호 용지길이 자동검출에 의한 프린팅 시스템 및 그 제어방법
DE19651193A1 (de) 1996-12-10 1998-06-18 Roland Man Druckmasch Justiereinrichtung einer vor einem Zylinder einer Rotationsdruckmaschine angeordneten Traverse

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Publication number Publication date
ATE257120T1 (de) 2004-01-15
EP1069062A3 (fr) 2002-01-30
US6446961B1 (en) 2002-09-10
EP1069062A2 (fr) 2001-01-17

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