EP1975102B1 - Axe de friction entraîné par moteur électrique - Google Patents

Axe de friction entraîné par moteur électrique Download PDF

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Publication number
EP1975102B1
EP1975102B1 EP20080102232 EP08102232A EP1975102B1 EP 1975102 B1 EP1975102 B1 EP 1975102B1 EP 20080102232 EP20080102232 EP 20080102232 EP 08102232 A EP08102232 A EP 08102232A EP 1975102 B1 EP1975102 B1 EP 1975102B1
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EP
European Patent Office
Prior art keywords
friction
friction shaft
shaft
elements
friction elements
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.)
Active
Application number
EP20080102232
Other languages
German (de)
English (en)
Other versions
EP1975102A3 (fr
EP1975102A2 (fr
Inventor
Alexander Weber
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.)
Heidelberger Druckmaschinen AG
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
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1975102A2 publication Critical patent/EP1975102A2/fr
Publication of EP1975102A3 publication Critical patent/EP1975102A3/fr
Application granted granted Critical
Publication of EP1975102B1 publication Critical patent/EP1975102B1/fr
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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
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F16/00—Transfer printing apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/20—Arrangements for moving, supporting or positioning the printing foil
    • B41P2219/21—Supports for the unwinding roll; Braking devices for the unwinding roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/20—Arrangements for moving, supporting or positioning the printing foil
    • B41P2219/23—Winding up the printing foil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/40—Holders, supports for rolls
    • B65H2405/45—Shafts for winding/unwinding

Definitions

  • the present invention relates to a friction shaft for winding at least one web, in particular a cold foil web, having an inner axis which has circumferentially connected to it first friction elements and these first friction elements functionally cooperate with second friction elements of a substantially cylindrical outer sleeve, so that at least one tangentially acting force can be generated at least partially braking the outer sleeve. Furthermore, the invention relates to a method for generating a rotational resistance between an outer shell and an axis of a friction shaft.
  • a transfer layer is transferred from a substrate to a substrate.
  • the printing material for this is first applied with an adhesive.
  • This adhesive application can be applied for this in a first commissioned work.
  • This commissioned work may be, for example, a conventional inking unit of a printing press.
  • the cold foil web comprising the transfer layer and the carrier material is passed through a transfer nip together with the printing material.
  • the transfer nip is formed by a transfer cylinder and an impression cylinder, which abut each other. Under the action of pressure, the transfer layer is then detached from the carrier material in the transfer nip in the regions which are exposed to adhesive and transferred to the printing substrate.
  • the adhesive layer corresponds to the area in which the film is to be selectively transferred. If the adhesive layer, as described, transferred in a conventional printing unit, this happens in some areas, z. B. by the adhesive ink is transferred to the substrate, as a conventional color also, ie by means of an exposed plate cylinder and a blanket cylinder. Of Furthermore, it is of course possible to transfer the adhesive over the entire surface of the substrate. This can happen, for example, in a coating plant.
  • cold foil is transferred to the printing substrate by means of at least two mutually different cold foil webs.
  • at least two different cold foil wraps are provided on a supply roll, which are guided independently of each other through the same transfer nip.
  • the different cold foil winding can be z. B. different colors or they can be transferred separately from each other at spaced positions on the substrate, so that cold foil can be saved.
  • a corresponding device for applying transfer layers of different cold foil windings is z. B. more precisely in the DE 10 2005 005 490 A1 described.
  • the various sub-film rolls are stored on the supply side in independent bearings and are individually driven externally.
  • the cold foil web is then passed through the transfer nip and fed to a collecting roll.
  • the individual webs must be driven at a different angular speed, so that the cold foil part webs in the transfer nip in each case have the same speed, ie the speed of the printing material.
  • the partial film webs consumed in the transfer nip are then wound up on a collecting shaft after the coating process.
  • a so-called friction wave can be used.
  • Such a friction shaft holds the partial film web in each case under a preselectable tension, wherein the collecting roller itself is driven at a speed which at least corresponds to the speed of the roll with the smallest diameter, but otherwise tuned to it or exceeds it.
  • a friction shaft By using the friction shaft, a slip within the Fritationswelle generated, whereby for each partial film web in each case the correct web tension or the correct winding torque automatically sets, regardless of the diameter of the wound up Ambifolienwickel.Solch a friction shaft can also be provided on the supply side.
  • a corresponding friction wave From the DE 199 21 637 A1 is known a corresponding friction wave. It has to generate the slip friction elements in the region of its drive shaft, which are designed stretchable and increase their diameter by radial pressure until their outer peripheral surfaces are pressed against the inner surfaces of tightly pushed-winding cores. Due to the enlarged friction elements, a correspondingly large surface friction value is generated, which is selected such that a slip is produced between the inner friction elements and outer friction elements mounted on the winding tubes.
  • the object of the present invention is to perform the retrofitting of spare parts due to wear at least less frequently and a longer uniform operation with fixed friction coefficient, d. H. to ensure a constant frictional force.
  • the object of the invention is achieved by a generic friction shaft according to claim 1, wherein the first and second friction elements magnetic friction elements are provided.
  • the tangential force which acts to at least partially decelerate the outer sleeve of the friction shaft, is generated at least by means of a magnetic interaction.
  • friction generation due to contacting friction elements is dispensed with in this case. These can thus not pollute, which normally causes a change in the frictional force is observed. Also, a wear of the friction elements is not expected, whereby the replacement intervals for the friction elements are at least larger. The friction is essentially generated without contact.
  • the method is achieved by the fact that a rotational resistance between the outer shell and the axis of a friction shaft is generated by means of a magnetic or electromagnetic force according to the principle of an electric motor, for which it is advantageously provided that the outer shell and the axle are coupled together by means of a corresponding force ,
  • a fluid is still provided as at least one friction element.
  • This fluid should preferably be air.
  • a frictional force is generated between the fluid and the outer bushing. In this way, the friction force is further enhanced, whereby the wear remains low through the use of a fluid.
  • a solid body with a low coefficient of friction is provided as at least one friction element.
  • the friction coefficient should in this case be designed so that at a normal web tension of a cold foil web which is wound on the friction shaft, a slip occurs between the at least one friction element and the outer bushing.
  • At least one of the friction elements is designed as an electromagnet, and the force is generated for braking the outer sleeve due to an electromagnetic interaction.
  • the decelerating force can be controlled even better.
  • alternating poles on the inside of the outer sleeve in cooperation with alternating current to generate the electromagnetic field, a better friction force can be generated.
  • the inner friction elements are designed as electromagnet.
  • both the inner and the outer friction elements may be formed as electromagnets.
  • a total of several axially distributed electromagnets are attached as friction elements either on the axis or on the outer sleeve.
  • the friction force acting on the outer bushing and thus on the winding of cold foil webs, which are mounted on the outer bushing can be varied axially.
  • the outer sleeve itself consists of elements that are independent of each other in the axial direction.
  • the force which acts as a friction force on the webs or cold foil webs wound up on winding is regulated as a function of the diameters of these rolls. This is particularly advantageous when more than one foil wrap is provided on the outer shell of the friction shaft. Depending on the diameter of this winding acts a different frictional force and the slip between the corresponding outer shell and the winding relative to the inner axis is achieved at different angular velocities of the winding.
  • the inner axis of the friction shaft itself is rotationally driven. In this way, it can be easily ensured that the slip first starts at higher angular speeds of the winding on the outer bushing.
  • This can be regulated in particular by regulating the angular velocity of the axis itself, so that the difference of Angular velocities of the axis itself and the slowest part of the winding, ie the part of the web with the largest winding diameter, can be minimized.
  • the inner axle itself On the collecting roller side, the inner axle itself would be driven so that its angular velocity is greater than the angular velocity of all partial webs, ie that the difference of the angular velocity of the fastest rotating part winding to the angular velocity of the axis is minimized, but the inner axis itself rotates faster than this part of the winding.
  • the fastest turning winding web would be here the winding with the smallest diameter. In this way, a slip between the friction elements can always be made possible.
  • the outer bush is at least supported by means of an electromagnetic force between the first and second friction elements.
  • the magnetic friction elements on the axis and the inside of the outer sleeve itself serve as a motor drive for the outer sleeve. Due to a web tension of the individual rolls on the friction shaft, the drive itself is partially decelerated or accelerated, depending on whether it is the supply side or the collecting side. This can also be combined with a rotary drive of the inner axis itself.
  • a drive for the friction shaft, d. H. for the individual partial film webs on the friction shaft simply realized.
  • this drive can be controlled independently of each other for axially separate regions of the friction shaft. A regulation of the web speeds or the slip of the part of the winding can be easily made possible.
  • the axis and the outer sleeve are formed with the magnetic friction elements in the form of a disc rotor.
  • the web is provided as a winding on a winding tube and is secured against circumferential twists relative to the outer sleeve.
  • the Fig. 1 shows a friction shaft 1 according to the prior art.
  • a film roll 2 is mounted on an outer bushing 3 of the friction shaft 1.
  • Between the outer sleeve 3 and the film roll 2 are here for locking the film roll 2 locking elements available. These locking elements avoid a relative rotation of the film roll 2 to the outer sleeve 3.
  • the locking elements are shown symbolically as connecting elements 6.
  • various film wraps 2 are provided on the friction shaft 1. Due to the possibility of slippage between the outer sleeve 3 and friction elements 5 in the interior of the friction shaft 1, different angular speeds of the film rolls 2 can then be realized due to different web tension of the film roll 2.
  • the friction shaft 1 also has an inner axis 4 with friction elements 5. These friction elements 5 can be moved radially outward and inward to control the friction.
  • This friction shaft 100 has an outer bushing 101, which is connected via bearings 105 with an inner shaft 102.
  • both the inner axis 102 and the inner side of the outer bush 101 each have electromagnets 103 and 104 as friction elements.
  • Simplest modifications thereof can also be realized in alternative embodiments, in which either the inner friction elements or the outer friction elements are designed as electromagnets 103, 104 and respectively the friction elements of outer bushing 101 and inner axis 102 are provided as permanent magnets.
  • the electromagnets 103, 104 can be supplied with power by means of techniques familiar to a person skilled in the art.
  • a slip ring 108 may be provided which acts on the electromagnets 103 of the inner axis 102 each with voltage.
  • a drive of the film roll 2, which are mounted on the friction shaft 100, for example, can be achieved completely by external influences.
  • z. B. be provided that the film web of the film roll 2 by preferred rollers 304, 310, as in Fig. 4 shown, is preferred.
  • an attractive force is simply generated as a braking force between the electromagnets 103, 104, so that this force for slip, no matter in which direction, must first be overcome.
  • actively controlled devices of the friction shaft 100 are also conceivable in which, as required, a braking or accelerating force acts between the electromagnets 103 and 104.
  • the size of this force can be controlled in particular by a corresponding power supply, possibly in conjunction with a corresponding switching frequency for the electromagnets 103, 104.
  • the friction shaft 100 can either on a supply side or a collecting side or on both sides of a film processing machine, in particular a cold foil stamping machine, as shown in FIG Fig. 4 is shown used.
  • the force between the electromagnets 103, 104 is generated according to the principle of the electric motor.
  • detection means may be provided which recognize the different winding diameter of film roll 2 on the friction shaft 100.
  • a film winding 2 with a larger diameter requires for the same peripheral speed thereby a lower angular velocity than a small film roll 2. Therefore, the friction shaft 100 is braked more in the region of a larger film roll 2 than in the region of a small film roll 2.
  • the electromagnets 103, 104 may be provided for each individual film roll 2 separate friction shafts 100 or in a particularly preferred embodiment, in the axial direction on the friction shaft 100 separate electromagnets 103, 104 are provided which can each be controlled independently. These areas should then in the outer sleeve 101 so together, for. B. via bearings, be connected, that also the outer bushing areas can rotate according to different speeds.
  • electromagnets 103, 104 which extend over the entire axis of the friction shaft 100 are sufficient.
  • the force between these friction elements is then adapted to the film roll 2, which must rotate at an angular velocity which is closest to, but different from, the angular velocity of the friction shaft 100.
  • the film roll 2 with dm largest diameter requires the smallest angular velocity.
  • a drive motor 107 is further provided, which drives the inner axle 102.
  • the inner axis 102 may have a rotational speed, so that their angular velocity substantially the angular velocity of the outer sleeve 101 corresponds. In this way, there are only slight differences in speed between outer bushing 101 and inner axle 102 and the regulation of the frictional force between electromagnets 103 and 104 can be made easier.
  • the Fig. 3 shows an alternative embodiment for the friction shaft 200.
  • electromagnets 203 are provided, which are associated with the inner axis 202.
  • the outer sleeve is in this case in the form of an outer ring 204, which rotatably extends radially from the inner axis 202 to the outside and in the form of a partial ring axially above the electromagnets 203 rests.
  • the friction shaft is formed according to the proposal shown here as a so-called pancake, which, again after the analogy of the electric motor, either the electromagnets of the inner axis 203 or electromagnets of the outer ring 204, not shown here act as a stator or rotor.
  • the electromagnets of the outer ring 204 are axially displaced to the electromagnets 203 and provided in the manner of a disk parallel to these.
  • Both the outer ring 204, which has an essentially L-shape, and the provided electromagnets 203 are each provided as disks.
  • the L-shape of the outer ring 204 is designed so that the short side of the electromagnets 203 substantially completely surmounted.
  • the friction shaft 200 is formed by axially adjacent arrangements of outer rings 204 and electromagnets 203.
  • the electromagnets 203 of the inner discs can be controlled independently of each other depending on the disc, the same applies to the electromagnets of the outer rings 204. In this way, in a simple manner, an axially varying adjustment of the braking or acceleration forces between the electromagnet 203 and the electromagnets of the outer rings 204 be realized.
  • the outer rings 204 can be firmly connected to different, not shown areas of one or more separate outer sockets.
  • Both embodiments according to Fig. 2 and Fig. 3 each can also be designed so that the electromagnets 103, 104, 203 and the electromagnets of the outer rings 204 interact with each other in pairs so that in fact an outer bushing 101 alone, as by the principle of an electric motor, is accelerated or on a given Speed is maintained. It can be provided axially offset that a different rotational speed of the outer sleeve 101 is desired in different areas of the friction shaft.
  • the Fig. 4 shows a possible example of using the described friction waves 100, 200 in a cold foil stamping machine, as in the previously unpublished application DE 10 2006 015 466 is described.
  • DE 10 2006 015 466 For exact operation and control, in particular the friction waves 100, is hereby fully on the DE 10 2006 015 466 Referenced.
  • the friction shafts 100 are on the right supply side foil supply reel 300, 301 shown with different diameters D.
  • the friction waves 100 are here after the example of Fig. 2 represented and have electromagnets 103, 104.
  • An embodiment with a friction shaft 200 after Fig. 3 is just as feasible in a simple way.
  • a respective transfer film web 302, 303 is wound up.
  • the two film webs 302, 303 are fed to a transfer nip 306 using a film timing 305.
  • This transfer nip 306 is formed by a transfer cylinder 307 and an impression cylinder 308.
  • a substrate 309 is passed through the transfer gap 306.
  • the printing material 309 was applied in regions in a printing unit not shown here in some areas with an adhesive.
  • a transfer layer, not shown here, of the transfer film web 302, 303 adheres to the surfaces of the printing substrate 309 that have been coated with adhesive and images it in this manner.
  • the transfer film webs 302, 303 are then fed to a friction shaft 100 on the collecting side.
  • foil collecting wraps 311, 312 are possibly provided with different diameters.
  • the friction shaft 100 may be actively driven.
  • a drive of the friction shaft 100 is here also a drive of the film collection winding 311, 312 by external, not shown here, drive rollers, which are employed on the film collection winding 311, 312, possible.
  • the friction shaft 100 on the preferred side must be controlled so that the film supply reel 300, 301 are both slightly slowed down in each case. In this way, a web tension and corresponding trains F1, F2 on the film supply reel 300, 301. Due to the tensile forces F1, F2 then the friction force between the electromagnets 103 and 104 is overcome and there is a slip between the inner axis 102 and the outer sleeve 101 of the friction shaft 100.
  • the friction shaft 100 On the collection side, the friction shaft 100 must be controlled such that at least its outer sleeve 101 rotates so fast that the film collection wraps 311, 312 are driven at a speed slightly greater than the film web speed through the transfer nip 309. In this way, tensile forces F3, F4, which permit slippage between the inner axle 102 and the outer bushing 101 of the friction shaft 100, also occur here.
  • the described friction shaft 100, 200 and its use in a cold foil stamping device can advantageously reduce the need for spare parts and maintenance.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding Of Webs (AREA)
  • Braking Arrangements (AREA)

Claims (11)

  1. Arbre de friction (1, 100) pour l'enroulement d'au moins une bande de produit, en particulier d'une bande de feuille froide (302, 303), comprenant
    un axe interne (4, 102), qui présente sur la périphérie des premiers éléments de friction (5, 103) reliés à ce dernier, et ces premiers éléments de friction coopèrent de manière fonctionnelle avec des secondes éléments de friction (3, 104) d'une douille externe (3, 101) sensiblement cylindrique, de sorte qu'une force sensiblement tangentielle peut être générée au moins pour le freinage partielle de la douille externe (3, 101), caractérisé en ce qu'
    en tant que premier et second éléments de friction, il est prévu des éléments magnétiques de friction (103, 104), qui génèrent la force tangentielle sensiblement au moyen d'une action magnétique en alternance selon le principe d'un moteur électrique.
  2. Arbre de friction selon la revendication 1, caractérisé en ce qu'entre les premiers et les seconds éléments de friction (103, 104), il est prévu un fluide de préférence de l'air (106) en tant qu'au moins un élément de friction.
  3. Arbre de friction selon la revendication 1, caractérisé en ce qu'entre les premiers et les seconds éléments de friction (103, 104), il est prévu un corps solide avec un coefficient de friction faible au moins en tant qu'élément de friction.
  4. Arbre de friction selon l'une des revendications à 3, caractérisé en ce qu'au moins l'un des éléments de friction (103, 104) est réalisé en tant qu'aimant électrique et la force est générée sur la base d'une action alternative électromagnétique.
  5. Arbre de friction selon l'une des revendications 1 à 3, caractérisé en ce que l'axe (102) est entraîné lui-même en rotation.
  6. Arbre de friction selon l'une des revendications 1 à 3, caractérisé en ce que la douille externe (101) est entraînée au moyen d'une force électromagnétique entre les premiers et seconds éléments de friction (103, 104) au moins par soutien.
  7. Arbre de friction selon la revendication 1, caractérisé en ce que l'axe (102) et la douille externe (101) sont réalisés en forme d'un rotor à disque avec les éléments magnétiques de friction (103, 104).
  8. Arbre de friction selon la revendication 1, caractérisé en ce que la bande de produit (302, 303) est préparée en tant que bobine (300, 301, 311, 312) sur un mandrin et est fixée pour éviter des torsions périphériques par rapport à la douille externe (101).
  9. Procédé pour la génération d'une résistance au couple de rotation entre une douille externe (101) et un axe (103) d'un arbre de friction (100) selon au moins l'une des revendications 1 à 8,
    caractérisé en ce que
    la douille externe et l'axe sont accouplés entre eux au moyen d'une force magnétique ou électromagnétique selon le principe d'un moteur électrique.
  10. Procédé selon la revendication 9, caractérisé en ce que la force est réglée en fonction des diamètres d'au moins l'une des bandes de produit (302, 303) préparées sur la douille externe (101) de l'arbre de friction (100) sous forme d'une bobine (300, 301, 311, 312).
  11. Procédé selon la revendication 10, caractérisé en ce qu'au moins deux bandes de produit (302, 303) sont préparées sur l'arbre de friction (100) et les forces sont réglées indépendamment les unes des autres sur la zone respective de l'arbre de friction (100).
EP20080102232 2007-03-28 2008-03-04 Axe de friction entraîné par moteur électrique Active EP1975102B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710015380 DE102007015380A1 (de) 2007-03-28 2007-03-28 Elektromotorische Friktionsspindel

Publications (3)

Publication Number Publication Date
EP1975102A2 EP1975102A2 (fr) 2008-10-01
EP1975102A3 EP1975102A3 (fr) 2009-07-22
EP1975102B1 true EP1975102B1 (fr) 2013-01-16

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ID=39584114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080102232 Active EP1975102B1 (fr) 2007-03-28 2008-03-04 Axe de friction entraîné par moteur électrique

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EP (1) EP1975102B1 (fr)
DE (1) DE102007015380A1 (fr)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684210A (en) * 1952-02-18 1954-07-20 American Viscose Corp Winding machine
US3179218A (en) * 1961-06-29 1965-04-20 Telautograph Corp Roller hysteresis clutch
NL6600995A (fr) * 1965-02-11 1966-08-12
US4327301A (en) * 1980-05-12 1982-04-27 Dana Corporation Magnetic clutch housing
DE3913919C2 (de) * 1989-04-27 1993-11-18 Du Pont Deutschland Wickelvorrichtung
DE4110801C1 (fr) 1991-04-04 1992-05-27 Kurt 4040 Neuss De Lappe
DE4300866A1 (de) * 1993-01-15 1994-07-21 Du Pont Deutschland Druck-Hilfsvorrichtung, insbesondere zur Prüfung von Druckmustern
DE4335313A1 (de) * 1993-10-16 1995-04-20 Basf Magnetics Gmbh Wickelvorrichtung zum parallelen Aufwickeln mehrerer Bänder
US5478025A (en) * 1994-08-09 1995-12-26 Wang; Shing Tension controlled winding device
DE69933144T2 (de) * 1998-10-14 2006-12-21 FUJI PHOTO FILM CO., LTD., Minamiashigara Bahnverarbeitungssystem
DE19921637A1 (de) 1999-05-10 2000-11-16 Friedrich Richter Friktionswickelwelle
US6702678B1 (en) * 2001-09-12 2004-03-09 James A. Mason Power transmission by magnetized ball coupling
DE102005005490A1 (de) 2005-02-04 2006-08-10 Man Roland Druckmaschinen Ag Folienzuführung für Kaltfolienprägung
DE102006015466A1 (de) 2006-03-31 2007-10-04 Heidelberger Druckmaschinen Ag Folientransferwerk mit Friktionswelle

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Publication number Publication date
EP1975102A3 (fr) 2009-07-22
DE102007015380A1 (de) 2008-10-02
EP1975102A2 (fr) 2008-10-01

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