EP1500504B1 - Dispositif pour imprimer des articles plans en matériau dérivé du bois - Google Patents

Dispositif pour imprimer des articles plans en matériau dérivé du bois Download PDF

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Publication number
EP1500504B1
EP1500504B1 EP04015715A EP04015715A EP1500504B1 EP 1500504 B1 EP1500504 B1 EP 1500504B1 EP 04015715 A EP04015715 A EP 04015715A EP 04015715 A EP04015715 A EP 04015715A EP 1500504 B1 EP1500504 B1 EP 1500504B1
Authority
EP
European Patent Office
Prior art keywords
workpiece
printing
roller
image
drive
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 - Fee Related
Application number
EP04015715A
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German (de)
English (en)
Other versions
EP1500504A2 (fr
EP1500504A3 (fr
Inventor
Norbert Damm
Sascha Lämmle
Bernd Armbruster
Erich Schmider
Gerhard Dölker
Markus Heintel
Tobias Schreck
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.)
Robert Buerkle GmbH
Original Assignee
Robert Buerkle GmbH
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
Application filed by Robert Buerkle GmbH filed Critical Robert Buerkle GmbH
Publication of EP1500504A2 publication Critical patent/EP1500504A2/fr
Publication of EP1500504A3 publication Critical patent/EP1500504A3/fr
Application granted granted Critical
Publication of EP1500504B1 publication Critical patent/EP1500504B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/24—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on flat surfaces of polyhedral articles
    • B41F17/26—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on flat surfaces of polyhedral articles by rolling contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
    • B41P2213/90—Register control

Definitions

  • the invention relates to a device for printing flat workpieces according to the preamble of patent claim 1.
  • such a device comprises an applicator roll, which rolls on the workpiece surface to be printed and here directly or indirectly, depending on whether the application roller itself is designed as a printing cylinder or as a transfer roller cooperates with such, applies a printed image on the workpiece surface, and a counter-roller which, in cooperation with the applicator roll, forms a nip through which the workpiece passes during the printing process.
  • a transport device for feeding and discharging the workpiece into and out of the pressure gap formed by the applicator roll and the counter roll is present.
  • the print image on the workpiece is positioned within very narrow tolerances typically in the range of ⁇ 0.1 mm. Only in this way can an optical quality comparable to the conventional film coating be achieved.
  • a detection device for detecting the position of a workpiece leading edge or a picture initial mark can be present in front of the printing nip, wherein this is designed cooperatively with the transport device and / or the printing cylinder, that the transport of the workpiece still accelerated or decelerated before reaching the printing nip and / or the angular position of the printing cylinder can be changed by accelerating or decelerating the rotational movement, to bring the beginning of the printed image with the leading edge of the workpiece or the intended repeat length in line.
  • an unambiguous position determination of the leading edge of the workpiece or a corresponding image start mark is possible relative to the rotational angle position of the printing cylinder known in the control of the device, so that, taking into account the fixed distance between the detection location and the printing nip, the position of the print image start on the workpiece exactly calculated and, where appropriate, by brief braking or accelerating the transport movement of the workpiece, or by brief braking or acceleration of the printing cylinder can be corrected.
  • a combination of these two measures is possible.
  • the measure, the front edge of a conveyed workpiece by means of a sensor which is arranged upstream of an applicator roll, and to synchronize the print image start on the applicator roll with the workpiece leading edge optionally by accelerating or decelerating the applicator roll, is already out of the DE-A-197 29 513 , of the EP-A-0 689 915 and the EP-A-0 616 886 known.
  • These documents relate to printing machines for printing on tiles, which are passed on conveyor belts under the applicator roll or, if used with a counter-roll, for printing of yielding, non-rigid workpieces such as cardboard and the like.
  • the present invention is concerned with the printing of rigid workpieces in a printing nip, which need not be precisely printed not only with regard to their repeat position, but also in which image distortions due to varying image lengths must also be avoided.
  • the present invention is therefore based on the object to improve a device for printing unyielding of sheet-like workpieces of the type mentioned so that image distortions due to varying image lengths can be avoided.
  • the applicator roll is thus provided with a drive which can be controlled to generate or eliminate slippage between the applicator roll and the workpiece and / or optionally between the impression cylinder and the applicator roll formed as a transfer roll.
  • a drive which can be controlled to generate or eliminate slippage between the applicator roll and the workpiece and / or optionally between the impression cylinder and the applicator roll formed as a transfer roll.
  • Slip and thus inaccuracies in the printed image are produced by different parameters, such as the pre-print setting of the applicator roll, the workpiece thickness tolerance or the inhomogeneity of the applicator roll surface.
  • a targeted generation of a "counter slip" between the applicator roll and the workpiece or between the impression cylinder and an optional transfer roller can eliminate this disturbance and keep the print image length almost at the level of a 1: 1 mapping.
  • the generation of slippage between the applicator roll and the workpiece or between the impression cylinder and an application roller designed as a transfer roller to compensate for errors in the print image length only affects the subsequent workpieces; it is therefore a tendency correction.
  • each printing gap is preceded by its own Detecting means for detecting the position of the workpiece leading edge or the initial image mark provided, and each printing cylinder or this directly associated transport device can be briefly accelerated or delayed due to the detected sensor values to synchronize the beginning of the image with the workpiece and optionally correct lying outside the predetermined tolerances shifts.
  • the messages of the detection devices then trigger a corrective intervention in selected drives of the superordinate synchronized network.
  • This modular construction of a multi-color printing line ensures that the achievable positional accuracy of the printed image on the workpiece surface does not depend on the number of printing units connected in series.
  • the modular design also allows individual printing units to be extended across the print line to perform a color or roll change. If at the same time a simple distance is moved into the pressure line, the production does not have to be significantly interrupted.
  • a feed sensor for detecting the position of the workpiece leading edge or a top mark and a cooperating with this acceleration or deceleration distance for coarse alignment of the workpiece is provided to the print image position of the first printing cylinder before the first application roller.
  • the modular correction option before each additional nip must then only take over the fine adjustment and the fine correction.
  • the acceleration section can essentially be formed by a calender which clamps the workpiece in a defined manner and thus can transmit the position correction provided by the control without further friction to the workpiece.
  • these generally first pass through several other processing stations in line before they arrive at the flow sensor for coarse alignment in the inventive device. This makes it difficult to synchronize the abandonment of the individual workpieces at the very beginning of the processing line with the printing line, in particular in the necessary accuracy.
  • a pressure line consisting of several printing units, each with a control circuit according to the invention for the modular correction of the print image beginning, forms an oscillatory system on account of the control processes which repeatedly occur with each arriving workpiece.
  • the preferably provided coarse alignment of the workpieces before reaching the actual pressure line keeps the vibration amplitudes small and prevents a possible rocking.
  • the individual control loops of the pressure column then have to make only minor corrections.
  • the coarse alignment also prevents two workpieces from following each other too closely, in order to be able to finely adjust the individual pressure gaps separately from each other. Normally, the coarse alignment ensures that the distance between the individual workpieces is a full-line multiple of the intended image length.
  • the preferably present coarse alignment of the workpieces by the flow sensor and the acceleration section thus decouples the pressure line from the normally preceding workstations.
  • Particularly preferred works the coarse alignment so that it basically accelerates the workpieces and does not slow down; Delaying would create a risk of backlog in the production line.
  • Both the applicator roll and the counter roll can each be provided with a drive, as has been customary so far.
  • the drive of the counter-roller delivers a lower torque than that of the applicator roll.
  • the drive of the counter roller can be controlled depending on possibly existing image distortions to selectively create or eliminate slippage between the applicator roll and the workpiece or to support the order roller drive in this respect.
  • the image length in the printing is directly related to the slippage of the applicator roll on the workpiece or also with the slip between the applicator roll and the transfer roller.
  • the goal in printing is therefore to avoid slippage; but even more important is the positional superimposition of the different colors when successively printing in successive printing columns.
  • a drive of a roll of a printing nip expediently the drive of the applicator roll, is selected as the master drive and its torque is taken as the reference value. All other drives of a pressure nip cooperating with this drive are then controlled in such a way that the values of their torques remain in all circumstances their sign, ie no zero passes of the torque values occur.
  • a lateral guide for the workpieces may be present, wherein the workpieces are transported to this guide fitting through the device. As a result, the workpieces are aligned laterally exactly.
  • This lateral guide may consist of a simple ruler, but better a roller conveyor or a vertical conveyor belt.
  • a transport force component oriented perpendicular to the transport direction and to the lateral guide for the workpiece.
  • Such means could be, for example, a helical roller track, a small entanglement of mating roll and applicator roll in the horizontal axis position to each other or a slight misalignment relative to the passage direction.
  • the pressure cylinder may be formed axially adjustable. This transverse adjustment of the printing cylinder can also take place automatically via the feedback of an image recognition system in that the image recognition system detects a need for correction on the printed image transferred to the workpiece surface and reports this back to the axial adjustment of the printing cylinder.
  • the recognition of printed image length errors after the printing has taken place and the corresponding correction by creating or eliminating a slip can be done by eye and by hand. It is advantageous, however, if the Pressure gap means for detecting image length tolerances are connected downstream, which preferably consist essentially of a digital camera. If there is still an image processing device which operates on the control of the applicator roll on the basis of the digital image obtained by the camera to compensate for image length tolerances, an automatic control system is provided which minimizes the image length tolerances.
  • the digital camera and the associated image processing device can also recognize the tolerance compliance in the lateral direction and correct by an axial adjustment of the printing cylinder.
  • the applicator roll is not formed as a printing cylinder, but there is a separate printing cylinder, which transmits the printed image on the applicator roll, after which this transmits the printed image on the workpiece surface.
  • the applicator roll is then designed as a transfer roller.
  • the printing cylinder is preferably a gravure roll having recesses which fill in the inking unit with ink, while they subsequently deliver this to the transfer roller.
  • the transfer roller is expediently designed as a rubberized steel roller, the rubber outer surface was ground smooth.
  • the application roller thus formed as a transfer roller is then in simultaneous contact with the printing cylinder and the workpiece surface, while it takes over the printed image from the printing cylinder and transmits to the workpiece surface.
  • a slip between the impression cylinder and the application roller or transfer roller can also be generated for the print image length adjustment. Because an existing, accidental slip between the Druckzy-Linder and the transfer roller results in slight print image distortions, ultimately leading to errors in the print image length.
  • the latter can act on the regulation of the printing cylinder and / or the applicator roll to compensate for image length tolerances. This measure leads to an automatically controlled error correction method with regard to the print image length.
  • a device according to the invention contains not only one printing nip but several printing nips or printing units arranged one behind the other, in which each printing unit is provided with its own detection device according to the invention, two such actually individually arranged detection devices can cooperate for measuring the transport speed of the workpiece.
  • FIG. 1 shows a total of three trained as a transfer roller 1 for the indirect pressure application rollers, each cooperating with a counter-roller 2 and form a pressure nip 3, which is traversed by a workpiece 4.
  • the print image is transferred in each case from a printing cylinder 5 to the transfer roller 1 and from there to the workpiece surface 6.
  • the workpiece 4 runs on a roller conveyor 7, wherein the transfer roller 1, the counter roller 2 and the impression cylinder 5 are each driven synchronously and thereby also produce the transport movement of the workpiece 4.
  • Each printing nip 3 is preceded by at least one detection device 8 designed as an optical sensor for detecting the position of the front edge 9 of the workpiece 4, wherein an approximately necessary corrective engagement to perform the position of the leading edge 9 relative to the angular position of the printing cylinder 5, by briefly accelerating or decelerating the printing cylinder 5 and the transfer roller 1 is made.
  • a detection device 8 designed as an optical sensor for detecting the position of the front edge 9 of the workpiece 4, wherein an approximately necessary corrective engagement to perform the position of the leading edge 9 relative to the angular position of the printing cylinder 5, by briefly accelerating or decelerating the printing cylinder 5 and the transfer roller 1 is made.
  • two detection devices 8 for detecting the position of the front edge 9 of the workpiece 4 are present here in each case.
  • the printing cylinders 5 are each provided with a registration mark 10, by means of which a marking arranged next to the printed image can be applied to the workpiece surface 6 in a manner known per se.
  • This registration mark usually a color cross or a color traffic light, allows a very fast detection of aberrations, which is particularly important for the print image length correction according to the invention.
  • Registration marks and any adjacent prints can also be easily captured by a digital camera and automatically evaluated.
  • register marks are set both at the beginning and at the end of the image, wherein the former the tolerances of the print image start and the latter the tolerances of the print image length can be checked for compliance.
  • FIG. 2 finally shows the lead of in FIG. 1 shown device, in which case a device for coarse alignment of the workpiece 4 is present.
  • the first printing unit is preceded by a calender 11 in order to perform the acceleration or deceleration of the workpiece 4 according to the invention in a targeted and reproducible manner.
  • the device for coarse alignment also has a calender 12, which defines the deceleration or acceleration of the workpiece 4 and causes no friction.
  • the calender 11 acts for the first printing unit assigned to it as an acceleration or deceleration path, so that the drives of the application roller or here the transfer roller 1, the impression cylinder 5 and the counter roller 2 need not necessarily be actuated for correction purposes.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Coating Apparatus (AREA)
  • Printing Methods (AREA)

Claims (23)

  1. Dispositif d'impression de pièces aplaties dépourvues de souplesse élastique, comprenant un cylindre applicateur qui roule sur la surface (6) des pièces destinée à être imprimée, et dépose alors une image imprimée sur ladite surface (6) desdites pièces, ledit cylindre applicateur étant un cylindre d'impression (5), ou un cylindre de transfert (1) coopérant avec un cylindre d'impression (5) ; un cylindre de contre-appui (2) qui réserve, en coopération avec ledit cylindre applicateur, un interstice d'impression (3) par lequel la pièce (4) défile au cours du processus d'impression ; et un système de transport (7) conçu pour introduire ladite pièce (4) dans l'interstice d'impression (3) formé par le cylindre applicateur et par le cylindre de contre-appui (2), et pour l'extraire dudit interstice, sachant qu'il est prévu, avant ledit interstice d'impression (3) en observant dans la direction d'acheminement de la pièce (4), un système de détection (8) qui est conçu pour repérer des positions d'un bord antérieur (9) de ladite pièce ou d'une balise de commencement d'image, et est réalisé pour coopérer avec le système de transport (7, 11), et/ou avec le cylindre d'impression (5), de façon telle que l'acheminement de ladite pièce (4) soit accéléré ou ralenti avant même que l'interstice d'impression (3) soit atteint, et/ou que la position angulaire dudit cylindre d'impression (5) puisse être modifiée par accélération ou ralentissement du mouvement rotatoire, de manière à faire coïncider le commencement de l'image imprimée avec ledit bord antérieur (9) de la pièce ou avec la position de référence prévue,
    caractérisé par le fait
    que le cylindre applicateur est muni d'un entraînement pouvant être régulé en vue de générer ou d'éliminer un patinage entre ledit cylindre applicateur et la pièce (4), la régulation dudit entraînement étant conçue de façon telle que des erreurs de longueurs d'images imprimées, repérées sur la surface (6) des pièces à l'issue d'une impression, soient corrigées par génération ou élimination d'un patinage entre ledit cylindre applicateur et des pièces (4) successives.
  2. Dispositif selon la revendication 1,
    caractérisé par le fait
    que plusieurs cylindres applicateurs sont respectivement agencés en succession alignée avec un cylindre de contre-appui (2) et un système de transport (7, 11), un propre système de détection (8), dévolu au repérage de positions du bord antérieur (9) des pièces ou d'une balise de commencement d'image, étant alors affecté à chaque interstice d'impression (3), tandis que les système de transport (7, 11) sont mutuellement coordonnés de telle sorte que la pièce (4) franchisse successivement, lors d'une phase opératoire, tous les interstices d'impression (3) formés entre les cylindres applicateurs et les cylindres de contre-appui (2).
  3. Dispositif selon la revendication 2,
    caractérisé par le fait
    qu'un détecteur d'avance (8) dévolu au repérage de positions du bord antérieur (9) des pièces ou d'une balise de commencement d'image, et un trajet (12) d'accélération ou de ralentissement coopérant avec ledit détecteur, sont prévus en amont du premier interstice d'impression (3), en vue de l'alignement grossier de la pièce (4) avec la position de l'image imprimée par le premier cylindre d'impression (5).
  4. Dispositif selon la revendication 3,
    caractérisé par le fait
    que le trajet d'accélération est matérialisé, pour l'essentiel, par une calandre (12).
  5. Dispositif selon l'une des revendications 3 ou 4,
    caractérisé par le fait
    que le détecteur d'avance (8) active un système d'alimentation qui dépose les pièces (4) sur le système de transport (7).
  6. Dispositif selon l'une des revendications 1 à 5,
    caractérisé par le fait
    que le cylindre applicateur et le cylindre de contre-appui (2) sont respectivement munis d'un entraînement, l'entraînement dudit cylindre de contre-appui (2) générant un couple de rotation moindre que celui dudit cylindre applicateur.
  7. Dispositif selon l'une des revendications 1 à 5,
    caractérisé par le fait
    que le cylindre applicateur et le cylindre de contre-appui (2), ainsi que d'autres cylindres d'un interstice d'impression (3) le cas échéant, sont respectivement munis d'un entraînement, les entraînements étant alors régulés de façon telle qu'un entraînement préétablisse une valeur de couple de rotation, et que les couples de rotation de tous les autres entraînements soient régulés de manière que ladite valeur du couple de rotation ne subisse aucune variation de signe au cours du processus d'impression.
  8. Dispositif selon la revendication 7,
    caractérisé par le fait
    que les entraînements, régulés d'après la valeur préétablie du couple de rotation de l'entraînement principal, sont respectivement sollicités par un couple de rotation présentant, à chaque fois, une valeur au moins légèrement inférieure à celle du couple de rotation prépondérant.
  9. Dispositif selon l'une des revendications 1 à 5,
    caractérisé par le fait
    que le cylindre applicateur et le cylindre de contre-appui (2) sont respectivement munis d'un entraînement, l'entraînement dudit cylindre de contre-appui (2) pouvant être régulé en vue de générer ou d'éliminer, additionnellement, un patinage entre ledit cylindre applicateur et la pièce (4).
  10. Dispositif selon l'une des revendications 1 à 9,
    caractérisé par
    la présence d'un guide latéral assigné à la pièce (4).
  11. Dispositif selon la revendication 10,
    caractérisé par le fait
    que le guide est constitué d'une règle, d'une piste à rouleaux ou d'une bande convoyeuse verticale.
  12. Dispositif selon l'une des revendications 10 ou 11,
    caractérisé par
    la présence de moyens dévolus à la génération, pour la pièce (4), d'une composante de force d'acheminement orientée perpendiculairement à la direction de l'acheminement, et pointant vers le guide latéral.
  13. Dispositif selon l'une des revendications 1 à 12,
    caractérisé par le fait
    que le cylindre d'impression (5) est réalisé avec faculté de réglage axial, en vue de l'ajustement transversal de l'image imprimée.
  14. Dispositif selon l'une des revendications 1 à 13,
    caractérisé par le fait
    que des moyens, dévolus au repérage de tolérances de longueurs d'images, sont implantés en aval de l'interstice d'impression (3).
  15. Dispositif selon la revendication 14,
    caractérisé par le fait
    que les moyens, dévolus au repérage de tolérances de longueurs d'images, incluent une caméra numérique.
  16. Dispositif selon la revendication 15,
    caractérisé par
    la présence d'un système de traitement d'images qui agit sur la régulation de l'entraînement du cylindre applicateur et/ou du cylindre de contre-appui (2), sur la base de l'image numérique acquise par la caméra, afin de compenser des tolérances de longueurs d'images.
  17. Dispositif selon les revendications 13 et 16,
    caractérisé par le fait
    que le système de traitement d'images agit également sur le réglage axial du cylindre d'impression (5).
  18. Dispositif selon l'une des revendications 1 à 17,
    caractérisé par le fait
    que le cylindre d'impression (5) est un cylindre gravé.
  19. Dispositif selon l'une des revendications 1 à 18,
    caractérisé par le fait
    que le cylindre applicateur est réalisé sous la forme d'un cylindre de transfert (1), et est muni d'un entraînement ; que le cylindre d'impression (5) est doté d'un propre entraînement ; et que l'entraînement dudit cylindre de transfert (1), et/ou l'entraînement dudit cylindre d'impression (5), peu(ven)t être régulé(s) en vue de générer ou d'éliminer un patinage entre ledit cylindre d'impression (5) et ledit cylindre de transfert (1).
  20. Dispositif selon les revendications 15 et 19,
    caractérisé par le fait
    que le système de traitement d'images agit sur la régulation du cylindre d'impression (5) et/ou du cylindre de transfert (1), sur la base de l'image numérique acquise par la caméra, afin de compenser des tolérances de longueurs d'images.
  21. Dispositif selon l'une des revendications 1 à 20,
    caractérisé par le fait
    qu'un système de gaufrage est implanté en aval de l'interstice d'impression (3).
  22. Dispositif selon l'une des revendications 1 à 21,
    caractérisé par le fait
    que ledit dispositif se prête à l'impression de pièces (4) consistant en du bois ou en un dérivé du bois.
  23. Dispositif selon l'une des revendications 1 à 22,
    caractérisé par le fait
    qu'au moins deux systèmes de détection (8), prévus à distance l'un de l'autre dans la direction d'acheminement de la pièce (4), sont agencés pour coopérer de manière à mesurer la vitesse d'acheminement de ladite pièce (4).
EP04015715A 2003-07-24 2004-07-03 Dispositif pour imprimer des articles plans en matériau dérivé du bois Expired - Fee Related EP1500504B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10333626 2003-07-24
DE10333626A DE10333626A1 (de) 2003-07-24 2003-07-24 Vorrichtung zum Bedrucken von flächigen Werkstücken

Publications (3)

Publication Number Publication Date
EP1500504A2 EP1500504A2 (fr) 2005-01-26
EP1500504A3 EP1500504A3 (fr) 2008-01-23
EP1500504B1 true EP1500504B1 (fr) 2013-03-27

Family

ID=33483039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04015715A Expired - Fee Related EP1500504B1 (fr) 2003-07-24 2004-07-03 Dispositif pour imprimer des articles plans en matériau dérivé du bois

Country Status (7)

Country Link
US (1) US7127992B2 (fr)
EP (1) EP1500504B1 (fr)
CN (1) CN100382965C (fr)
BR (1) BRPI0403074A (fr)
DE (1) DE10333626A1 (fr)
ES (1) ES2415334T3 (fr)
TW (1) TW200520957A (fr)

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DE102016100146B3 (de) * 2016-01-05 2017-04-06 Wemhöner Surface Technologies GmbH & Co. KG Bedruckvorrichtung

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DE102007021787B4 (de) * 2007-05-07 2010-08-19 Wemhöner Surface Technologies GmbH & Co. KG Verfahren zur Steuerung einer Druckmaschine
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ES2415334T3 (es) 2013-07-25
EP1500504A3 (fr) 2008-01-23
CN1576044A (zh) 2005-02-09
US7127992B2 (en) 2006-10-31
CN100382965C (zh) 2008-04-23
TW200520957A (en) 2005-07-01
DE10333626A1 (de) 2005-02-17
US20050051044A1 (en) 2005-03-10
BRPI0403074A (pt) 2005-05-31

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