EP0668161B1 - Dispositif pour le transfert de feuilles individuelles sur le cylindre imprimeur d'une machine d'impression rotative de feuilles - Google Patents

Dispositif pour le transfert de feuilles individuelles sur le cylindre imprimeur d'une machine d'impression rotative de feuilles Download PDF

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Publication number
EP0668161B1
EP0668161B1 EP95810076A EP95810076A EP0668161B1 EP 0668161 B1 EP0668161 B1 EP 0668161B1 EP 95810076 A EP95810076 A EP 95810076A EP 95810076 A EP95810076 A EP 95810076A EP 0668161 B1 EP0668161 B1 EP 0668161B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
transfer cylinder
plate
transfer
sheet
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
EP95810076A
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German (de)
English (en)
Other versions
EP0668161A1 (fr
Inventor
Albrecht Joseph Germann
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.)
KBA Notasys SA
Original Assignee
De la Rue Giori SA
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 De la Rue Giori SA filed Critical De la Rue Giori SA
Publication of EP0668161A1 publication Critical patent/EP0668161A1/fr
Application granted granted Critical
Publication of EP0668161B1 publication Critical patent/EP0668161B1/fr
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
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F11/00—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
    • B41F11/02—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination for securities

Definitions

  • the invention relates to a device for transferring individual sheets to the printing cylinder a sheet-fed rotary printing press according to the preamble of claim 1.
  • the conventional sheet transfer devices had in common that the incoming sheets exactly in the transfer the same rhythm to the impression cylinder the transfer point of the transfer cylinder, on the front edge of the sheet from the grippers of the impression cylinder is always the same. To achieve that when printing on the sheets of the Distance between the leading edge of the sheet and the start of printing, so the free front edge of the sheet is always the same width, had to attach the printing plates to the Plate cylinders are carefully taken care that all printing plates are attached at exactly the same distance with a plate cylinder with two, three or four pressure plates an exact angular distance of 180 °, 120 ° or 90 °.
  • GB-A-339275 is already one Register correction device known with the arches at the transfer from one cylinder to another Cylinder, for example from an impression cylinder a transfer cylinder are adjustable at an angle.
  • the bow grippers are movable on one Transfer cylinder mounted mounting plate, and one grips at each end of this shelf individually controllable control device, which at every revolution of the transfer cylinder End of the shelf by a predetermined amount in Circumferential direction of the transfer cylinder relative to this shifts. This is also an adjustment of the Arch possible at an angle to the circumferential direction.
  • This known device works at each end of the Base plate with a pair of interacting Tooth segments, of which one tooth segment, by means of Adjusting screws adjustable in the circumferential direction, on Pressure cylinder and the other tooth segment on the on the Transfer cylinder mounted mounting plate mounted is. Every time the cylinder rotates the two tooth segments of a pair with each other in Intervention, is according to the setting of the Tooth segment on the impression cylinder by means of the other Tooth segment the relevant end of the positioning plate in Shifted circumferential direction. Once the two Tooth segments of a pair disengage, takes the plate on the transfer cylinder under the Effect of a return spring its through one Stop defined rest position. The parts of this known device must therefore partially on Transfer cylinder and partly on the pressure cylinder be assembled and when operating the cylinder work together.
  • the object of the present invention is to achieve this the basis in the preamble of claim 1 known device described, in which all parts are mounted on the transfer cylinder or cooperate with this so that they improve - like the known device according to GB-A-339275 - also an adjustment of an arc somewhat obliquely to the circumferential direction to allow one possible inclination of the on the plate cylinder attached printing plates to take into account.
  • the structure of the device is to be simplified will.
  • each of the two ends of the movable stored storage space individually around a specifiable Amount adjustable is not easy only one shift of an arc in the circumferential direction, but also a turn in an inclined position allows if namely the two ends of the positioning plate be adjusted by different amounts. All that is needed is the movably mounted one Base plate with the bow grippers and not, as with the known device, a whole drum relative to be adjusted to the cylinder shaft.
  • Figures 1 to 3 is the transfer cylinder 2 of the device between a feed roller S and the printing cylinder D of a rotary printing press, especially an intaglio printing machine, arranged, the plate cylinder P ( Figure 3) interacts in a known manner with the printing cylinder D.
  • the directions of rotation of all cylinders are in the Figures 1 to 3 indicated by arrows.
  • the plate cylinder P has at least two printing plates, generally N printing plates, where N is greater than 1 is.
  • the plate cylinder P four pressure plates, which are at an angular distance of approximately 90 ° are mounted, so not necessarily on the A fraction of a millimeter exactly at a 90 ° distance must be adjusted, and also deviations from the Can have parallel axes.
  • Figure 3 are the four printing segments of the printing cylinder D and the Plate cylinder P indicated.
  • the sheets B are fed by the feed roller S individually one after the other via an only schematically indicated System table T moves and on the transfer cylinder 2 given, each incoming sheet against the front stop 4a of the articulated on the transfer cylinder 2 Bow gripper 4 transported and from these to Transfer to the printing cylinder D is taken.
  • At the feed roller S can in particular be a known, driven at non-uniform speed Act suction roller.
  • Figure 1 is an incoming sheet B straight from the Bow grabs 4 taken over
  • Figure 2 is the leading edge of sheet B from the transfer cylinder 2 to the sheet gripper G2 of the impression cylinder D passed.
  • the transfer cylinder 2 leads to a full Turn of the plate cylinder N turns off, in example considered four revolutions, and has a diameter that is 1 / N of the diameter of the Plate cylinder P, so in the example considered Quarter of this diameter. With every revolution the transfer cylinder 2 conveys a sheet.
  • the pressure cylinder D and the plate cylinder P are the same size, and the Printing cylinder D has four printing plates are, four printing segments covered with blankets and in front of each blanket sheet gripper, of which in Figure 1 the grippers G1 and in Figure 2 the grippers G2 can be seen are.
  • the transfer cylinder 2 with its Shaft 1 rotatably mounted in the machine frame 30 and is by a gear wheel attached to this shaft 1 32, which engages in the pressure cylinder gear from Printing cylinders with uniform speed driven.
  • the transfer cylinder 2 thus leads four revolutions when the plate cylinder P is one makes full rotation. Since the impression cylinder D the same Diameter as the plate cylinder P has like it usually the case, of course this corresponds to one Rotation of the printing cylinder D. In principle, however the impression cylinder also has a diameter other than the plate cylinder, especially a smaller one Diameter, with the impression cylinder for example can be as big as the transfer cylinder.
  • the sheet gripper 4 which with a gripper or Sheet support 4 'cooperate to the respective Adjustment of the position of the incoming sheets adjustable arranged on the transfer cylinder 2.
  • the sheet grippers 4 on a positioning plate 3 mounted, which in the two side walls 5 and 6 of Transfer cylinder 2 is movably mounted.
  • positioning plate 3 has at both ends Guide lugs 3a and 3b, which in guide slots 5b or 6b of the side walls 5 and 6 engage.
  • On this Side walls 5 and 6 are articulated roller levers 9 and 10, which in bearings 5a and 6a of these side walls about axes parallel to shaft 1 are pivotable. These roller levers are at their, in the transfer cylinder 2 projecting ends with Carriers 11 and 12 and at their other ends with Rollers 13 and 14 provided.
  • the drivers 11 and 12 grip between two stop parts 7 and 8 fastened to the setting plate 3 a, which run essentially parallel to the shaft 1 and in the circumferential direction of the transfer cylinder 2 face each other. These stop parts 7 and 8 serve as a play-free guide for the drivers 11 or 12.
  • the rollers 13 and 14 engage in one annular guideway 15c or 16c, which by two concentric ring projections 15a, 15b or 16a, 16b of an annular actuator 15 or 16 on one side or on the other side is formed and surrounds the shaft 1.
  • the two Actuators 15 and 16 are each one above the Shaft 1 fixed pin 17 on the device frame 30 or 18 is pivotally suspended so that they are one axis parallel to shaft 1 can be tilted can.
  • the arrangement is such that the Rollers 13 and 14 when the transfer cylinder rotates 2 in the annular guideways 15c and 16c can roll without play.
  • the actuators 15 and 16 individually around the pins 17 and 18 in a vertical are swiveled to wave 1 oriented plane, whereby, as explained below, the setting plate 3 with their bow grippers 4 relative to the body of the Transfer cylinder 2 parallel to the circumferential direction of the same or also in an oblique to the circumferential direction oriented position can be adjusted.
  • Each of the actuators 15 and 16 has its own Control device. Both control devices are constructed the same way and each have a lever arm 19 or 20, which on the pin 17 and 18 facing away Area of the actuator 15 or 16 is attached. At the Lever arm 19 are, as FIG. 4 shows, so many individual adjustable stops 19a to 19d attached, like printing plates provided on the plate cylinder are four adjustable in the example considered Attacks. On the lever arm 20 are accordingly individually adjustable stops 20a to 20d intended.
  • lever arms 19 and 20 are with their attacks, for the sake of clarity their actual position, which is shown in FIG. 5, shown rotated 90 ° downwards.
  • These attacks 19a to 19d and 20a to 20d lie next to each other and can each with a control cam in the form of a cam 24a to 24d or 25a to 25d interact.
  • All Cams sit on the rotatable in the device frame 30 mounted shaft 23 and have the shape of segments, which are each at an angle of approximately 360 ° / N, in the example considered, extend over approximately 90 °.
  • the angular distance between adjacent cams is 360 ° / N, in the example considered it is 90 °, see above that during a quarter turn of the shaft 23, for example the cam 24a or 25a on the stop 19a or 20a can act while the other cams 24b up to 24d or 25b to 25d are ineffective; in the following quarter turn of the shaft 23 can then Cam 24b or 25b on the stop 19b or 20b act while the other cams are ineffective, etc.
  • the arrangement is such that during a full revolution of the transfer cylinder 2 Shaft 23 makes a quarter turn with the cams.
  • Shaft 23 makes a quarter turn with the cams.
  • gear 27 attached, the diameter of which four times is as large as a gear 31 on shaft 1 and driven by this toothed wheel 31 by means of a toothed belt 26 becomes.
  • the shaft 23 leads with the Cams with one full revolution of the transfer cylinder 1 / N revolutions.
  • the lever arm 19 with its stops 19a to 19d as shown in FIG. 5, by a lever end attached tension spring 21, the other end of the frame 30 is fixed in the direction of the cams 24a to 24d or in the direction of a fixed stop 22 drawn, which is attached to the frame 30.
  • the lever arm 19 In the in Figure 5 position shown with solid lines the lever arm 19 is under the action of the spring 21 fixed stop 22 on, since all adjustable stops 19a to 19d assume a position that is sufficient is far from the cams 24a to 24d.
  • This Position of the lever arm 19 with the actuator 15 is referred to as the zero position, in which the annular Guideway 15c concentric to axis 1 of the transfer cylinder 2 lies.
  • Position of the device takes the stop 19a Position 19a 'on. In this position, he's so far in Adjusted towards the cam 24a assigned to it, that this cam is going through its effective Position pushes against this attack and it so far pushes back that the lever arm 19 with his Actuator 15 relative to the zero position around the pin 17 clockwise, against the action of the spring 21, is pivoted.
  • This dot-dash position should represent the maximum deflection.
  • the actuators 15 and 16 are individual according to a predetermined program, which is carried out by the individual adjustment of the adjustable stops 19a to 19d and 20a to 20d is defined, either leave it in its zero position or at the fixed pin 17 or 18 adjusted depending on whether a cam 24a to 24d or 25a to 25d when passing their effective position the assigned adjustable Stop 19a to 19d or 20a to 20d by one more or less or less.
  • the position of the adjusting plate 3 in is essential the moment when the leading edge of a sheet located on the transfer cylinder 2 under Opening the bow gripper 4 to the bow gripper of the Printing cylinder D is transferred, as shown in Figure 2.
  • the position of the arch at this point determines the later registration-based adjustment of this Sheet to the relevant printing plate of the plate cylinder. It is assumed in the following that it is at the two positions shown in FIG these positions when the sheet is handed over.
  • the zero position is chosen so that a possible Correction of the position of the bow only in the a circumferential direction needs to take place.
  • the maximum possible deflection becomes the size of the tolerance of the According to experience, panel mounting means that maximum inaccuracy when attaching the panels on the plate cylinder, adjusted.
  • the stops 19a to 19d and 20a to 20d individually adjusted so that each time the Transfer cylinder an individual correction of the position the positioning plate 3 and thus the position of the sheet takes place, such that this bow when handing over the bow to the impression cylinder to achieve a perfect Print register occupies the required position. To this In this way, all sheets have a constant after printing Margin width between the leading edge and the start of printing.
  • Such an adjustment of the stops can either before the start of the printing operation due to some Test prints by hand, for example using the schematically illustrated adjustment screws, or there are servomotors provided for which are each assigned to an adjustable stop is.
  • These actuators are either by Pressed a button from a control panel or else as a function of automatically by reading register marks measured register deviations controlled. For example, in the case of unprinted sheets the register marks applied during printing, by reading the positions of the following ones Sheets are corrected.
  • a first print for example a surface, can then be applied in the first printing unit Register marks for automatic register correction to serve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Rotary Presses (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (5)

  1. Dispositif de transfert de feuilles individuelles sur le cylindre d'impression (D) d'une machine d'impression rotative à la feuille, qui a un cylindre porte-plaque (P) comportant N plaques d'impression, N étant un nombre entier supérieur à 1, un cylindre de transfert (2) coopérant avec le cylindre d'impression (D), dont le diamètre vaut 1/N du diamètre du cylindre porte-plaque (P) et qui effectue N tours quand le cylindre porte-plaque (P) effectue un tour, avec des pinces à feuilles (4) montées sur le cylindre de transfert (2) qui comportent une butée avant pour les feuilles arrivant (B) et lesquelles sont réglables au moyen d'un dispositif de commande (9,11,13,15,10,12,14,16) pendant chaque tour du cylindre de transfert (2) de telle manière que la butée avant (4a), au passage de la position de transfert dans laquelle une feuille est transférée sur le cylindre d'impression (D), prend une position réglant le registre exact de ladite feuille par rapport à la plaque d'impression correspondante du cylindre porte-plaque (P), caractérisé en ce que les pinces (4) sont fixées sur une plaque de réglage (3) montée de manière mobile sur le cylindre de transfert (2), en ce que ledit dispositif de commande (9,11,13,15,10,12,14,16) est fixé à chaque extrémité de ladite plaque de réglage (3), en déplaçant d'une distance donnée à chaque tour du cylindre de transfert (2) l'extrémité concernée de la plaque (3) dans la direction périphérique du cylindre de transfert (2) par rapport à celui-ci, en ce que chacun des deux dispositifs de commande (9,11,13,15,10,12,14,16) comporte un actionneur (15;16) sur le côté du cylindre de transfert (2) fixé par un pivot (17;18) monté au dessus de l'axe (1) du cylindre de transfert (2) mobile en rotation dans un plan perpendiculaire audit axe, en ce que ledit actionneur (15;16) comporte une glissière de guidage (15c;16c) annulaire entourant ledit axe (1) du cylindre de transfert (2), en ce que dans chaque paroi latérale (5;6) du cylindre de transfert (2) un levier à galet (9;10) est monté de manière orientable, dont l'une des extrémités (13;14) est guidée sans jeu dans ladite glissière (15c;16c) pendant la rotation du cylindre de transfert (2) et dont l'autre extrémité (11;12) est arrangée pour déplacer l'extrémité concernée de la plaque (3) quand ladite glissière de guidage se trouve dans une position excentrée par rapport à l'axe du cylindre de transfert (2).
  2. Dispositif selon la revendication 1, caractérisé en ce que ledit levier à galets (9;10) est mobile autour d'un axe orienté parallèlement à l'axe (1) du cylindre de transfert (2) dans la paroi latérale (5;6) dudit cylindre de transfert et en ce que l'extrémité du levier à galets agissant sur l'extrémité de la plaque (3) est un tenon d'entraínement (11;12) qui coopère avec les pièces de guidage (7;8) qui sont fixées à la plaque (3) et servent de guidage sans jeu.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que chaque un actionneur (15;16) est appuyé sous l'effet d'un ressort (21) contre une butée fixe (22), laquelle définit une position zéro dudit actionneur.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce qu'un bras de levier (19;20) est fixé sur chaque actionneur (15;16), chaque bras de levier comportant N butées (19a à 19d; 20a à 20d) placées l'une à côté de l'autre, chacune étant réglable individuellement par un dispositif d'ajustement (28a à 28d; 29a à 29d) et en ce que ces butées réglables peuvent coopérer avec N cames (24a à 24d;25a à 25d) qui sont montées l'une à côté de l'autre sur un arbre commun (23) en face des butées et avec des écarts angulaires de 360°/N, l'arbre (23) portant les cames effectuant 1/N tour pendant que le cylindre de transfert (2) effectue un tour complet.
  5. Dispositif selon la revendication 4, caractérisé en ce que les butées réglables individuellement (19a à 19d; 20a à 20d) sont ajustables au moyen de vis de réglage (28a à 28d; 29a à 29d) ou de moteur d'ajustement qui sont enclenchables manuellement ou commandables en fonction de l'écart mesure automatiquement par la lecture de marque de registre.
EP95810076A 1994-02-17 1995-02-06 Dispositif pour le transfert de feuilles individuelles sur le cylindre imprimeur d'une machine d'impression rotative de feuilles Expired - Lifetime EP0668161B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH47694 1994-02-17
CH476/94 1994-02-17

Publications (2)

Publication Number Publication Date
EP0668161A1 EP0668161A1 (fr) 1995-08-23
EP0668161B1 true EP0668161B1 (fr) 1998-06-10

Family

ID=4187879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95810076A Expired - Lifetime EP0668161B1 (fr) 1994-02-17 1995-02-06 Dispositif pour le transfert de feuilles individuelles sur le cylindre imprimeur d'une machine d'impression rotative de feuilles

Country Status (11)

Country Link
US (1) US5461977A (fr)
EP (1) EP0668161B1 (fr)
JP (1) JP3670330B2 (fr)
KR (1) KR100347447B1 (fr)
CN (1) CN1081539C (fr)
AT (1) ATE167112T1 (fr)
AU (1) AU680973B2 (fr)
CA (1) CA2142572C (fr)
DE (1) DE59502447D1 (fr)
RU (1) RU2129490C1 (fr)
UA (1) UA39875C2 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19611124B4 (de) * 1996-03-21 2012-07-26 Heidelberger Druckmaschinen Ag Bogenübertragungseinrichtung einer Bogenrotationsdruckmaschine
EP0936067B1 (fr) 1998-02-10 2003-12-03 Baldwin-Japan Ltd. Dispositif pour nettoyer un cylindre
US6923436B2 (en) * 2000-04-19 2005-08-02 Digital Internet Transport System S.I. Process for the manufacture of sets of printed pages for the preparation of books, and set of printed pages manufactured by that process
KR100611346B1 (ko) * 2004-04-30 2006-08-14 진명통신(주) 열선을 이용한 안테나 결빙 방지 장치
DE102010047807B4 (de) * 2009-10-27 2021-05-20 Heidelberger Druckmaschinen Ag Vorrichtung zur Lagekorrektur von Bogen
WO2013039082A1 (fr) 2011-09-14 2013-03-21 株式会社小森コーポレーション Imprimante à combinaison
JP6013093B2 (ja) * 2011-09-14 2016-10-25 株式会社小森コーポレーション ザンメル印刷機及び該ザンメル印刷機を含む組合せ印刷機
JP2013059925A (ja) * 2011-09-14 2013-04-04 Komori Corp 組合せ印刷機
EP2749416B1 (fr) * 2012-12-28 2020-01-22 Komori Corporation Presse d'impression en creux
JP2014141069A (ja) * 2012-12-28 2014-08-07 Komori Corp 凹版印刷機
JP2014141068A (ja) * 2012-12-28 2014-08-07 Komori Corp 凹版印刷機

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467832A2 (fr) * 1990-07-20 1992-01-22 De La Rue Giori S.A. Dispositif pour le transfert des feuilles seules au cylindre presseur d'une presse rotative à feuilles

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
GB339275A (en) * 1929-07-03 1930-12-03 Albert Schnellpressen A process and device for registering sheets in multiple colour printing
US2395445A (en) * 1943-05-31 1946-02-26 Christensen Machine Co Sheet registering mechanism
US3993302A (en) * 1970-07-30 1976-11-23 Miller Printing Machinery Co. Apparatus for registering and feeding sheets to a sheet fed printing press
GB1436326A (en) * 1972-05-23 1976-05-19 Roneo Vickers Ltd Rotary printing machines
FR2185442B1 (fr) * 1972-05-25 1976-03-12 Naphtachimie Sa
US4311093A (en) * 1979-08-06 1982-01-19 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Sheet feeding assembly including provision for coordinated action of pre-gripper and front stop
JPS57182443A (en) * 1981-05-08 1982-11-10 Komori Printing Mach Co Ltd Front guide device for sheet fed press
DE3311196A1 (de) * 1983-03-26 1984-10-04 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Verfahren zur fliessenden anlage von boegen
US4892307A (en) * 1989-03-13 1990-01-09 Lehberger Arthur N Balancing stick toy
US5103733A (en) * 1990-10-24 1992-04-14 A. B. Dick Company Printing machine with continuous sheet feed mechanism
DE4221578A1 (de) * 1992-07-01 1994-01-05 Heidelberger Druckmasch Ag Vorrichtung und Verfahren zur Bogenerfassung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467832A2 (fr) * 1990-07-20 1992-01-22 De La Rue Giori S.A. Dispositif pour le transfert des feuilles seules au cylindre presseur d'une presse rotative à feuilles

Also Published As

Publication number Publication date
CA2142572A1 (fr) 1995-08-18
EP0668161A1 (fr) 1995-08-23
UA39875C2 (uk) 2001-07-16
AU680973B2 (en) 1997-08-14
CN1128212A (zh) 1996-08-07
JPH07251495A (ja) 1995-10-03
RU95103107A (ru) 1996-12-10
RU2129490C1 (ru) 1999-04-27
AU1156195A (en) 1995-08-24
KR950031517A (ko) 1995-12-18
DE59502447D1 (de) 1998-07-16
CN1081539C (zh) 2002-03-27
CA2142572C (fr) 2005-11-08
JP3670330B2 (ja) 2005-07-13
KR100347447B1 (ko) 2002-11-30
US5461977A (en) 1995-10-31
ATE167112T1 (de) 1998-06-15

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