EP0611240A1 - Druckmaschine mit mindestens einem Zylinder mit doppeltem Verfahrweg - Google Patents

Druckmaschine mit mindestens einem Zylinder mit doppeltem Verfahrweg Download PDF

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Publication number
EP0611240A1
EP0611240A1 EP94490003A EP94490003A EP0611240A1 EP 0611240 A1 EP0611240 A1 EP 0611240A1 EP 94490003 A EP94490003 A EP 94490003A EP 94490003 A EP94490003 A EP 94490003A EP 0611240 A1 EP0611240 A1 EP 0611240A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
displacement
printing machine
slides
slide
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
Application number
EP94490003A
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English (en)
French (fr)
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EP0611240B1 (de
Inventor
Jean Pierre Cuir
Gérard Cuir
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Individual
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Individual
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 Individual filed Critical Individual
Publication of EP0611240A1 publication Critical patent/EP0611240A1/de
Application granted granted Critical
Publication of EP0611240B1 publication Critical patent/EP0611240B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing

Definitions

  • the present invention relates to a printing machine equipped with a plurality of cylinders and more particularly to a printing machine of the flexographic sheet-by-sheet type in which at least one cylinder, for example the screened cylinder or the back-pressure cylinder is completely retractable. by a double displacement of great amplitude.
  • a displacement of certain cylinders, of greater amplitude, is sometimes necessary, in particular when it is a question of changing one cylinder by another.
  • gripping means capable of achieving a certain clearance in height of the cylinders, said gripping means cooperating with tilting raceways intended to ensure a linear translation of the cylinders, moving by gravity on the raceways until reaching a position where they are suitable for being taken up by hoists.
  • the device described in this document FR 2 485 990 has a certain number of drawbacks. On the one hand it is very complex in terms of production, using a very large number of various mechanical components. On the other hand it is not fully automatic insofar as manual intervention is necessary to release the cylinder whose change is desired.
  • the aim set by the applicant is to provide a printing machine equipped with a plurality of cylinders and which comprises displacement means for at least one of said cylinders, which overcomes the aforementioned drawbacks.
  • the machine of the invention which, typically, comprises for a given cylinder first means of displacement from a first position corresponding to the working position to a second position and second means of displacement of said second position to a third position plus the shaft of said cylinder, double displacement, comprising an individual drive motor and toothed wheels at its two ends, the second displacement means comprise a set of two racks in which can s 'meshing said gears, so that the displacement of said cylinder from the second to the third position is obtained by the rotation of said drive motor.
  • the individual drive motor of the double displacement cylinder remains integral with said cylinder during the two successive displacements of the latter. It is in particular an electronic servo motor, of the brushless type.
  • each end of the shaft of the double-displacement cylinder is integral with a slide and the first displacement means comprise a first set of two slides defining the path of said slides between the first and the second position and are capable of simultaneously moving the two slides in said slides.
  • the first displacement of the cylinder is a linear displacement between the first and the second position.
  • this first linear displacement is a vertical displacement, both for the screened cylinder and for the counter-pressure cylinder.
  • each slide comprises a rack and the first displacement means comprise a motor driving a pinion which is capable of meshing with said rack.
  • the two slides have a notch and the first displacement means comprise a motor driving two vertical ball screws, each screw having a length at least equal to the distance between the first and the second position and being able to pass through the notch, so that the ball screw nut carries a slider between the first and second position and in that the screw can come out of the notch and be released from the slider between the second and third position
  • the printing machine according to the invention is with automatic change of screened cylinder.
  • it comprises at least two double displacement screened cylinders, one being in the third so-called storage position while the other is in the first so-called working position; moreover it comprises third means of displacement of said cylinders from the second to a fourth position, which is in the same direction but opposite to that of displacement from the second to the third position.
  • the change of screened cylinder is effected by actuating the first , the second and third displacement means so that the screened cylinder which in the working position passes to the second then to the fourth position and in that the cylinder which is in the third so-called storage position passes to the second and then to the first position
  • the printing machine is washing automatic plate cylinder.
  • it comprises a double-displacement backpressure cylinder placed in the working position under the plate cylinder, a mobile device for washing the plate cylinder and means for moving said washing device which are suitable for bring close to the plate cylinder when the back pressure cylinder has moved from the first to the third position.
  • the mobile washing device is, when the back-pressure cylinder is in the working position, placed in a housing which is located near the second position; the means for moving said washing device then comprise the first means for moving the back-pressure cylinder.
  • the means for moving said washing device then comprise the first means for moving the back-pressure cylinder.
  • it is the same displacement means which both retract the back-pressure cylinder between the first and second positions and which position the mobile washing device from its housing to its location in the vicinity and under the plate cylinder.
  • the printing machine according to the invention is with automatic retraction of the back-pressure cylinder and of the system for transferring the material to be printed, integral with said back-pressure cylinder.
  • the machine also includes support rods on which the transfer system is supported and pivots on itself during the passage of the back-pressure cylinder from the first to the third position.
  • the printing machine which will be discussed in the examples below is a sheet-fed flexographic printer in which the plate cylinder 1, fixed, occupies a central position while the back-pressure cylinder 2 is located below of the plate cylinder 1 and the screened cylinder 3 above it.
  • This choice is not, however, limiting of the invention but simply allows it to be illustrated.
  • the screened cylinder is the cylinder which brings the desired ink dose to the plate cylinder. It has on its surface a multitude of cells.
  • the ink deposited on the screened cylinder 3 is scraped with a rubber cylinder 4 or possibly with a doctor blade in order to leave on its surface an amount of ink corresponding to the volume of its cells.
  • This ink is then transferred to the plate cylinder 1, against which the screened cylinder 3 is applied.
  • the sheet to be printed passes between the plate cylinder 1 and the back pressure cylinder 2 so that the ink deposited on the cliché be applied to said sheet
  • the quantity of ink added to the plate may be modified depending on the type of printing, for example flat or text in fine print, or the type of cardboard, for example. example kraft or coated cardboard.
  • Such a modification of the quantity of ink can only be done by changing the screened cylinder.
  • the printing machine represented in FIG. 1 shows the different elements making it possible to automatically change the screened cylinder.
  • the shaft 5, 5 'of each of the two screened cylinders 3, 3' is rotated by an electronic servo motor, of the brushless type, not shown.
  • the shaft 5, 5 ' also includes, towards each of its ends, a toothed wheel 6, 6'.
  • the ends of said shafts 5, 5 ' are secured to slides 7, 7'.
  • the automatic change of the screened cylinder 3 is carried out by a first movement from the working position to a second intermediate position, illustrated in FIG. 2.
  • This first movement, linear and vertical, is obtained by means of slides, 8, 9, which delimit the path of the slides 7 between the first and the second position.
  • a transfer piece 10 capable of moving between the two slides 8, 9, at the same time as the slides 7.
  • This transfer piece 10 is secured to the corresponding slide 7 so as to allow the vertical movement of the part 10 by driving the slide 7.
  • This connection can result from the presence of an assembly system of the T-slot type which achieves this connection when the movement is vertical but which must allow the separation of the slide 7 and the transfer piece 10 when the movement will be horizontal as will be explained below.
  • the slide 7 as well as the transfer piece 10 laterally support a rack respectively 11, 12, the two racks being in the extension of one another when the slide 7 and the transfer piece 10 are secured.
  • the two vertical slides 8, 9 are extended, towards their ends opposite to the plate cylinder, each by a horizontal slide 13 and 14 respectively.
  • a rack 15 extending horizontally is arranged. above the two horizontal slides 13, 14 and the space between these two slides corresponding to the spacing of the two vertical slides 8, 9.
  • the printing machine further comprises, opposite each slide 7, a toothed wheel 16, driven in rotation by a gear motor not shown.
  • This toothed wheel 16 is arranged so as to always be in engagement with the teeth of the rack 11, 12 either of the slide 7 or of the transfer part 12.
  • the automatic change of the screened cylinder is obtained in accordance with the various steps illustrated in FIG. 1 in FIG. 7.
  • Figure 1 there is shown the first screened cylinder 3 in the working position, applied against the plate cylinder 1, while the second screened cylinder 3 'is in the storage position, its slides 7' resting on one of the two horizontal slides 13, 14 at the end thereof.
  • this storage position which we will call third position, the toothed wheel 6 'of the second screened cylinder 3' is engaged on the teeth of the rack 15.
  • This movement is obtained by controlling the rotation of the gear motor driving in rotation the toothed wheel 16 in the direction of the arrow F.
  • the toothed wheel 16 meshes first in the rack 11 of the slide 7 then in the rack 12 of the transfer part 10, this rotation causes the vertical displacement along the arrow G of the assembly constituted by the slide 7, the first screened cylinder 3 and the transfer part 10.
  • the second position is reached when the toothed wheel 6 carried by the shaft 5 of the first screened cylinder 3 is applied in the teeth of the horizontal rack 15.
  • the base of the slide 7 is tangent to the upper face of the horizontal slides 13, 14.
  • the transfer part 10 remains in the position which was hers in FIG. 2, that is to say when the first screened cylinder was in the second position. Indeed the slide 7 is detached from the transfer part 10, by sliding one relative to the other of the assembly system of the T-slot type.
  • Figure 4 shows the two screened cylinders 3, 3 'in the storage position.
  • Figures 5 to 7 show the steps for moving the second screened cylinder 3 'from its storage position to the working position. These steps are very similar to those just described.
  • the displacement of the second screened cylinder 3 'from the third to the second position is effected by rotation of the electronically controlled motor driving the toothed wheel 6' mounted on the shaft 5 'of said second screened cylinder 3' in the direction of the arrow F.
  • the slide 7 ′ of the second screened cylinder 3 ′ comes to join with the transfer part 10 which had remained in the same position.
  • the gear motor drives in the direction of the arrow F' the toothed wheel 16, which first meshes in the rack 12 of the transfer part 10 then in the rack 11 'of the slide 7' so as to drive the second screened cylinder 3 'from the second to the first position.
  • the drive motors of the screened cylinders 3, 3 ′ and of the toothed wheel 16 are connected to an electronic control system, making it possible to synchronize the movements as described above. More particularly, a particular synchronization must be implemented so that when the cylinder arrives in the second position, the corresponding toothed wheel 6 comes to perfectly engage in the teeth of the rack 15.
  • the printing machine is with automatic washing of the plate cylinder 1 and with retraction of the assembly 17 constituted by the back pressure cylinder 2 and the transfer system. leaves.
  • Washing of the plate cylinder 1 is generally carried out manually when the machine is stopped, or else by dismantling the plate cylinder 1 and placing it in a special washing installation.
  • the back-pressure cylinder 2 is integral with the system for transferring the material to be printed.
  • a transfer assembly 17 which consists of the back-pressure cylinder 2, of the electronically-controlled motor 18, which drives the shaft 19 of the back-pressure cylinder 2, a set of belts 20, possibly notched, mounted in a loop around two drive rollers 21, 22, the roller 22, located near the back pressure cylinder 2 also being driven by the motor 18.
  • the set of belts 20 could be replaced by a succession of drive rollers.
  • the set of belts 20 conveys the printed material, sheet by sheet, from the previous station 23.
  • the set of belts 20 can be surmounted by an infrared device 24 intended for drying the ink in the case where the preceding station 23 is itself a printing station.
  • the shaft 19 of the back pressure cylinder 2 supports at each of its ends on the one hand a toothed wheel 25 and on the other hand a slide 26, which in this case is a rectangular metal plate .
  • the retraction of the back pressure cylinder 2 is achieved by a first vertical displacement, by means of vertical slides 27, 28 delimiting the path of the slide 26 between the first working position of the back pressure cylinder 2 and the second intermediate position.
  • a second movement, between said second position and a third storage position is achieved by two horizontal slides 29, 30 defining the path of the slide 26 between these two positions.
  • the slide 26 is provided with a notch into which the nut of the ball screw penetrates during this movement so as to ensure its blocking.
  • the arrangement of the notch is such that when the slide is driven from the second to the third position, the nut of the ball screw comes out of the notch, separating the transfer system 17 from the ball screw system.
  • the machine is also equipped with horizontal racks 31, located in the area between the two horizontal slides 39 and 30.
  • the mobile washing device 32 consists of a tank 33 for recovering the washing liquid and of an assembly comprising rotary brushes with axial displacement and water jets. It is of course possible to equip this mobile washing device 32 with all mechanical, pneumatic, ultrasonic, etc. means allowing washing of the plate cylinder 1 to be carried out in a short time.
  • the mobile washing device 32 is, when the back-pressure cylinder 2 is in the first working position, located in a housing 33 which is a hollow part of the base 34 of the machine.
  • the vertical movement of the washing device 32 from its housing 33 to the first position, that is to say in the immediate vicinity of the plate cylinder 1 is preferably obtained by the same means as those used to ensure the vertical displacement of the back pressure cylinder 2.
  • the washing device 32 is equipped, at each of its ends with a slide, not shown, capable of moving, like the slide 26 of the back pressure cylinder 2 between the vertical slides 27, 28, to carry out the automatic washing of the plate cylinder 1.
  • the retraction of the set of belts 20 is obtained also thanks to two support rods 35, 36 whose position and role will be explained during the description which follows of the various stages allowing the complete retraction of the transfer system 17 and automatic installation of the washing device 32.
  • FIG 8 there is shown the transfer system 17 in its working position, namely the back pressure cylinder 2 being applied to the plate cylinder 1 and the set of belts 20 being upstream and in horizontal alignment of the line of tangency between the plate cylinder 1 and the back pressure cylinder 2.
  • Figure 9 there is shown the first movement of the back-pressure cylinder 2 from the first working position to the second position, obtained by rotation of the screw of the ball screw system and the correlative movement of the slides 26 between the slides 27, 28.
  • the belt 20 is supported by a second support rod 36 fixed to the frame of the printing machine.
  • the set of belts 20 makes a substantially 45 ° angle apart from the horizontal.
  • the complete retraction of the transfer system 17 is achieved by the second displacement of the back pressure cylinder 2 between the second intermediate position and the third standby position.
  • This second movement is obtained by the rotation of the shaft 19, driven by the electronic servo motor 18.
  • the washing device is moved vertically between its base position where it is in its housing 33, to its high position or it is near the plate cylinder. 1.
  • Such displacement can be obtained by independent means or, preferably, by the same means as those used to ensure the first vertical displacement of the back-pressure cylinder 2.
  • the washing device 32 comprises a fork which is retractable between a retracted position and an extended position in which the ball screw penetrates between the arms of the fork at above the nut of the ball screw, the passage between the retracted position and the extended position of the fork being effected by the action of a limit switch when the counter-pressure cylinder arrives 2 in the third waiting position.
  • the washing device 32 is mounted at each of its ends on slides 38 and the machine also includes a set of moving parts 39.
  • the moving part 39 is located below the level of the horizontal lower slide 30. It is further characterized by three shoulders 40, 41, 42, the first 40 being located at its front end while the other two shoulders 41, 42 are situated at its rear end and delimit between them a space capable of forming a housing for the slide 38 of the washing device 32.
  • Figure 12 there is shown the position taken by the movable part 39 while the transfer system 17 is in the working position.
  • the moving part 39 remains in this same position.
  • the slide 26 supporting the pressure cylinder 2 comes to bear on the first shoulder 40 and pushes it back with it into the third waiting position.
  • the amplitude of the displacement of this part 39, and therefore the position of the first shoulder 40 relative to the third standby position, is determined so that, when said shoulder 40 is in this third position, the slide 38 of the washing device 32 is located directly above the vertical slides 27, 28.
  • Each slide 26 of the back-pressure cylinder 2 has a notch 43, substantially horizontal, open on the left side in FIG. 12.
  • Each slide 38 of the washing device 32 has a notch 44, substantially horizontal, open on the right side.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printers Characterized By Their Purpose (AREA)
EP94490003A 1993-02-12 1994-01-21 Druckmaschine mit mindestens einem Zylinder mit doppeltem Verfahrweg Expired - Lifetime EP0611240B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9301866A FR2701425B1 (fr) 1993-02-12 1993-02-12 Machine à imprimer comportant au moins un cylindre à double déplacement.
FR9301866 1993-02-12

Publications (2)

Publication Number Publication Date
EP0611240A1 true EP0611240A1 (de) 1994-08-17
EP0611240B1 EP0611240B1 (de) 1995-10-11

Family

ID=9444198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94490003A Expired - Lifetime EP0611240B1 (de) 1993-02-12 1994-01-21 Druckmaschine mit mindestens einem Zylinder mit doppeltem Verfahrweg

Country Status (6)

Country Link
US (1) US5463950A (de)
EP (1) EP0611240B1 (de)
CN (1) CN1096482A (de)
DE (1) DE69400025T2 (de)
ES (1) ES2081228T3 (de)
FR (1) FR2701425B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20131003A1 (it) * 2013-06-18 2014-12-19 Nuova Gidue Srl Dispositivo e metodo per la sostituzione dei cilindri di stampa di un gruppo di stampa, particolarmente per macchine flessografiche rotative in linea.
WO2018184738A1 (en) 2017-04-07 2018-10-11 Bobst Firenze S.R.L. Printing unit with interchangeable printing sleeve

Families Citing this family (15)

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Publication number Priority date Publication date Assignee Title
DE19611559A1 (de) * 1996-03-23 1997-09-25 Koenig & Bauer Albert Ag Bogenverarbeitungsmaschine
IT1292083B1 (it) * 1997-06-04 1999-01-25 Aurelia Offset S P A Apparecchiatura per la stampa flessografica applicabile a gruppi di stampa offset
DE19819389B4 (de) * 1997-07-30 2008-11-13 Heidelberger Druckmaschinen Ag Lackierwerk für Rotationsdruckmaschinen
US5806427A (en) * 1997-08-29 1998-09-15 Goss Graphic Systems, Inc. Printing press having carriage mounted interchangeable plate cylinders
US6059705A (en) * 1997-10-17 2000-05-09 United Container Machinery, Inc. Method and apparatus for registering processing heads
DE19943027C5 (de) * 1998-10-28 2016-11-17 Heidelberger Druckmaschinen Ag Positioniervorrichtung in einer Druckmaschine
SE9901729L (sv) * 1999-05-12 2000-11-13 Jimek Ab Duktvättanordning
DE19937783A1 (de) * 1999-08-10 2001-02-15 Roland Man Druckmasch Druckwerk
ATE226890T1 (de) * 1999-08-13 2002-11-15 Koenig & Bauer Ag Einrichtung zum wahlweisen reinigen mehrerer zylinder
DE20102712U1 (de) * 2001-02-16 2001-04-05 Roland Man Druckmasch Bogenführungseinrichtung in einer Druckmaschine
DE10121729B4 (de) * 2001-05-04 2008-06-19 Qimonda Ag Verfahren zur Erzeugung von Produktionsinformationen einer Produktionsmaschine
DE10314297B4 (de) * 2003-03-25 2007-07-12 LTG Mailänder GmbH & Co. KG Verfahren und Vorrichtung zum Wechseln mindestens eines Zylinders an einer Druck- oder Lackiermaschine
DE102004008090A1 (de) * 2004-02-19 2005-09-08 Man Roland Druckmaschinen Ag Vorrichtung zum Positionieren einer Walze in einem Farb- oder Feuchtwerk einer Rotationsdruckmaschine
CN104553262B (zh) * 2014-12-17 2017-05-10 西安航天华阳印刷包装设备有限公司 一种凹版版辊装置
DE102019100309A1 (de) 2019-01-08 2020-07-09 Koenig & Bauer Ag Auftragaggregat mit Positioniervorrichtung und Speichereinrichtung

Citations (1)

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Publication number Priority date Publication date Assignee Title
FR2485990A1 (fr) * 1980-07-03 1982-01-08 Holweg Const Mec Dispositif pour le changement automatique de cylindres d'une imprimeuse flexographique

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CA581328A (en) * 1959-08-11 Champlain Company Printing press
US967985A (en) * 1907-10-15 1910-08-23 Hoe & Co R Inking device.
US2506011A (en) * 1946-10-23 1950-05-02 Champlain Company Inc Enclosed fountain gravure press
US2637270A (en) * 1949-06-23 1953-05-05 Sperry Corp Intaglio printing press
US3604350A (en) * 1969-04-23 1971-09-14 Lee Machinery Corp Flexographic presses with interrupter and cylinder register mechanisms
IT1204804B (it) * 1986-02-17 1989-03-10 Cerutti Spa Off Mec Unita' di stampa supplementare del tipo flessografiche
DE4001735A1 (de) * 1990-01-22 1991-07-25 Windmoeller & Hoelscher Vorrichtung zum verfahren von wellen lagernden lagerboecken
CH682896A5 (fr) * 1990-04-25 1993-12-15 Bobst Sa Machine d'impression offset à format variable avec déchargement-chargement automatique des cylindres d'impression.

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FR2485990A1 (fr) * 1980-07-03 1982-01-08 Holweg Const Mec Dispositif pour le changement automatique de cylindres d'une imprimeuse flexographique

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20131003A1 (it) * 2013-06-18 2014-12-19 Nuova Gidue Srl Dispositivo e metodo per la sostituzione dei cilindri di stampa di un gruppo di stampa, particolarmente per macchine flessografiche rotative in linea.
WO2014202255A1 (en) * 2013-06-18 2014-12-24 Nuova Gidue Srl Device and method for replacing the printing rollers of a printing unit, particularly for in-line flexographic rotary machines
CN105377558A (zh) * 2013-06-18 2016-03-02 博斯特佛罗伦萨有限公司 用于更换具体用于直列式柔性版印刷旋转机器的印刷单元的印刷辊的装置和方法
US9340007B2 (en) 2013-06-18 2016-05-17 Bobst Firenze S.R.L. Device and method for replacing the printing rollers of a printing unit, particulary for in-line flexographic rotary machines
CN105377558B (zh) * 2013-06-18 2017-10-24 博斯特佛罗伦萨有限公司 用于更换具体用于直列式柔性版印刷旋转机器的印刷单元的印刷辊的装置和方法
RU2652297C2 (ru) * 2013-06-18 2018-04-25 Бобст Фиренце С.Р.Л. Устройство и способ для замены печатных валиков печатного узла, в частности, для встраиваемых в линию флексографских ротационных машин
WO2018184738A1 (en) 2017-04-07 2018-10-11 Bobst Firenze S.R.L. Printing unit with interchangeable printing sleeve
US11390067B2 (en) 2017-04-07 2022-07-19 Bobst Firenze S.R.L. Printing unit with interchangeable printing sleeve

Also Published As

Publication number Publication date
FR2701425A1 (fr) 1994-08-19
ES2081228T3 (es) 1996-02-16
FR2701425B1 (fr) 1995-05-12
EP0611240B1 (de) 1995-10-11
US5463950A (en) 1995-11-07
DE69400025T2 (de) 1996-04-11
DE69400025D1 (de) 1995-11-16
CN1096482A (zh) 1994-12-21

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