EP2735445B1 - Printing unit with damping elements on printing cylinders - Google Patents
Printing unit with damping elements on printing cylinders Download PDFInfo
- Publication number
- EP2735445B1 EP2735445B1 EP13192424.3A EP13192424A EP2735445B1 EP 2735445 B1 EP2735445 B1 EP 2735445B1 EP 13192424 A EP13192424 A EP 13192424A EP 2735445 B1 EP2735445 B1 EP 2735445B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- cylinder
- printing unit
- impression cylinder
- damping element
- 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
Links
- 238000007639 printing Methods 0.000 title claims description 83
- 238000013016 damping Methods 0.000 title claims description 24
- 239000000758 substrate Substances 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 8
- 239000013013 elastic material Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- 238000004080 punching Methods 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 238000010022 rotary screen printing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B41F13/085—Cylinders with means for preventing or damping vibrations or shocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
- B41F19/008—Apparatus or machines for carrying out printing operations combined with other operations with means for stamping or cutting out
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2251/00—Details or accessories of printing machines not otherwise provided for
- B41P2251/10—Pumps
Description
Die Erfindung betrifft ein Druckwerk mit den oberbegrifflichen Merkmalen von Anspruch 1 und eine Schmalbahndruckmaschine mit den Merkmalen von Anspruch 6.The invention relates to a printing unit with the preamble features of
Bei Druckmaschinen, insbesondere bei Offset- und Tiefdruckwerken, ist im Druckzylinder häufig ein Zylinderkanal vorgesehen. Ein solcher Zylinderkanal fungiert in vielen Fällen als ein Spannkanal zum Aufnehmen der Enden eines auf den Zylinder aufgespannten Aufzugs. Der Aufzug kann eine Druckplatte oder ein Gummituch sein.In printing machines, especially in offset and gravure printing, a cylinder channel is often provided in the printing cylinder. Such a cylinder channel acts in many cases as a tensioning channel for receiving the ends of an elevator mounted on the cylinder. The elevator can be a pressure plate or a blanket.
Insbesondere bei Flexodruckwerken kann eine Lücke (sogenannter Gap) zwischen einer Vorderkante und einer Hinterkante eines um den Zylinderballen geschlungenen Aufzugs, z. B. einer auf dem Zylinderballen klebenden oder darauf magnetisch gehaltenen Flexodruckplatte (Klischee) bestehen.In particular, in flexographic printing, a gap (so-called Gap) between a leading edge and a trailing edge of a loop wrapped around the cylindrical bale, z. B. a sticking on the cylinder bales or magnetically held on flexographic printing plate (cliché) exist.
Beim Abrollen des Zylinders auf einem benachbarten Zylinder verursacht der Zylinderkanal bzw. der Gap einen sogenannten Kanalschlag bzw. Gapschlag. Wenn sich der Zylinderkanal bzw. der Gap in Gegenüberlage mit dem benachbarten Zylinder befindet, fällt die Pressung zwischen den beiden Zylindern schlagartig ab. Dies geschieht bei jeder Zylinderumdrehung und führt zu im Druckbild sichtbaren Störungen.When rolling the cylinder on an adjacent cylinder causes the cylinder channel or the Gap a so-called channel blow or Gapschlag. If the cylinder channel or the gap is in opposition to the adjacent cylinder, the pressure between the two cylinders abruptly drops. This happens with each cylinder revolution and leads to visible disturbances in the printed image.
Um diese Störungen im Druckbild zu vermindern, ist es aus dem Stand der Technik bekannt und beispielsweise in der
Die
Die
Zur Abstandseinstellung zwischen den Walzen dienen pneumatische Zylinder. Die Stützringe selbst werden durch die pneumatischen Zylinder nicht verändert.To adjust the distance between the rollers are pneumatic cylinders. The support rings themselves are not changed by the pneumatic cylinder.
Die
Aufgabe der vorliegenden Erfindung ist es, ein Druckwerk und eine Schmalbahndruckmaschine zu schaffen, welche die Nachteile des Standes der Technik zumindest teilweise beheben und eine einfache und zugleich kostengünstige Lösung zur Reduzierung des Einflusses von Kanalschlag bzw. Gapschlag auf das Druckbild bieten. Gelöst wird diese Aufgabe durch ein Druckwerk mit den Merkmalen von Anspruch 1 und durch eine Schmalbahndruckmaschine gemäß Anspruch 6.Object of the present invention is to provide a printing unit and a narrow web printing machine, which at least partially remedy the disadvantages of the prior art and provide a simple and cost-effective solution to reduce the influence of channel impact or Gapschlag on the printed image. This object is achieved by a printing unit with the features of
Das erfindungsgemäße Druckwerk dient dem Bedrucken eines bahnförmigen oder bogenförmigen Substrats, insbesondere zur Herstellung von Etiketten oder Faltschachteln, mit einem um eine Drehachse drehbaren Druckzylinder und mit einem um eine zur Drehachse des Druckzylinders im Wesentlichen parallelen Drehachse drehbaren Gegendruckzylinder, wobei zwischen dem Druckzylinder und dem Gegendruckzylinder ein Druckspalt gebildet und das Substrat bedruckt wird. Insbesondere kann das Druckwerk als Flexodruckwerk ausgeführt sein. Der Druckzylinder kann dabei einen Zylinderkanal oder einen Gap aufweisen. Erfindungsgemäß besitzt der Druckzylinder oder der Gegendruckzylinder in beiden Randbereichen seiner Umfangsfläche, d. h. nahe den Stirnseiten, je ein elastisches, ringförmiges Dämpfungselement. Das Dämpfungselement ist um den Zylinder geschlungen bzw. auf diesen aufgeschoben. Weiter ist in dem Druckwerk mindestens ein dem Dämpfungselement zugeordnetes Stellelement vorgesehen, wobei die Dämpfungseigenschaften und ggfs. zusätzlich der Außendurchmesser eines jeweiligen Dämpfungselements durch das mindestens eine Stellelement einstellbar sind.The printing unit according to the invention is used for printing a web-shaped or sheet-shaped substrate, in particular for the production of labels or folding cartons, with a rotatable about a rotation axis of the printing cylinder and a rotatable about an axis of rotation of the printing cylinder substantially parallel rotation axis impression cylinder, wherein between the impression cylinder and the impression cylinder formed a printing gap and the substrate is printed. In particular, the printing unit can be designed as a flexographic printing unit. The printing cylinder can have a cylinder channel or a gap. According to the invention, the printing cylinder or the impression cylinder has in both edge regions of its peripheral surface, d. H. near the end faces, depending on an elastic, annular damping element. The damping element is wrapped around the cylinder or pushed onto this. Furthermore, at least one adjusting element assigned to the damping element is provided in the printing unit, wherein the damping properties and, if necessary, additionally the outer diameter of a respective damping element can be adjusted by the at least one adjusting element.
Erfindungsgemäß ist ein jeweiliges Dämpfungselement als mit einem Fluid gefüllter Schlauch aus elastischem Material ausgeführt und und das mindestens eine Stellelement ist vorgesehen zur Veränderung des Drucks in einem jeweiligen Schlauch. Durch Veränderung des Drucks in einem jeweiligen Schlauch kann auf einfache Art und Weise der Durchmesser des Schlauchs verändert und dadurch das Abrollverhalten von Druckzylinder und Gegendruckzylinder beeinflusst werden. In einer vorteilhaften Ausgestaltung dieser
Variante umfasst das Stellelement eine
Pumpe bzw. einen Kompressor, welche von einer Maschinensteuerung angesteuert werden kann. Als Fluid in einem jeweiligen Schlauch kann dabei entweder Luft oder Hydraulikflüssigkeit eingesetzt werden.According to the invention, a respective damping element is designed as a hose filled with a fluid made of elastic material and and the at least one adjusting element is provided for varying the pressure in a respective hose. By changing the pressure in a respective hose, the diameter of the hose can be changed in a simple manner and thus the rolling behavior of the pressure cylinder and the impression cylinder can be influenced. In an advantageous embodiment of this
Variant, the control element comprises a
Pump or a compressor which can be controlled by a machine control. In this case, either air or hydraulic fluid can be used as fluid in a respective hose.
In einer nicht erfindungsgemäßen, alternativen Ausgestaltung des Druckwerks ist ein jeweiliges Dämpfungselement als Ring aus elastischem Material ausgeführt, insbesondere aus Gummi. Desweiteren ist jedem Ring ein Stellelement zugeordnet zur Verformung eines jeweiligen Ringes. Durch die Verformung eines jeweiligen Ringes kann der Durchmesser des Ringes, seine Dämpfungseigenschaften und damit das Abrollverhalten von Druckzylinder und Gegendruckzylinder beeinflusst werden. Die beiden Ringe nehmen dabei den vollen Anpressdruck des Druckzylinders bzw. Gegendruckzylinders auf. Dieser Druck kann dabei wesentlich höher sein als bei bisherigen Druckeinstellungen, ohne dass das Druckbild "überquetscht" würde. Dies wirkt einem Kanalschlag bzw. Gapschlag positiv entgegen. Durch das Verformen der Ringe und damit ein Einstellen der Durchmesser der Ringe ist eine Anpassung des Druckwerks an verschiedene Substratstärken des zu bedruckenden Substrats als auch eine Anpassung an unterschiedlich dicke Druckplatten, Gummitücher bzw. Klischees möglich.In a non-inventive, alternative embodiment of the printing unit, a respective damping element is designed as a ring of elastic material, in particular of rubber. Furthermore, each ring is assigned an actuating element for the deformation of a respective ring. Due to the deformation of a respective ring, the diameter of the ring, its damping properties and thus the rolling behavior of impression cylinder and impression cylinder can be influenced. The two rings take on the full contact pressure of the printing cylinder or impression cylinder. This pressure can be much higher than in previous print settings, without the printed image would be "over squeezed". This positively counteracts a channel strike or gap. By deforming the rings and thus adjusting the diameter of the rings, an adaptation of the printing unit to different substrate thicknesses of the substrate to be printed as well as an adaptation to different thickness printing plates, blankets or plates is possible.
Beiden vorteilhaften Ausführungsalternativen ist gemeinsam, dass dank der variabel einstellbaren Dämpfungselemente mit einem wesentlich höheren Anpressdruck des Druckzylinders gedruckt werden kann, ohne dass dabei das Druckbild wesentlich beeinflusst würde. Die Stoßempfindlichkeit eines jeweiligen Druckwerks wird durch die einstellbaren Dämpfungselemente wesentlich herabgesetzt.Both advantageous alternative embodiments have in common that thanks to the variably adjustable damping elements can be printed with a much higher contact pressure of the printing cylinder, without causing the image would be significantly affected. The shock sensitivity of each printing unit is significantly reduced by the adjustable damping elements.
Hinsichtlich weiterer Vorteile und in konstruktiver und funktioneller Hinsicht vorteilhafter Ausgestaltungen der Erfindung wird auf die Unteransprüche sowie die Beschreibung von Ausführungsbeispielen unter Bezugnahme auf die beiliegenden Figuren verwiesen.With regard to further advantages and constructive and functional advantageous embodiments of the invention, reference is made to the dependent claims and the description of exemplary embodiments with reference to the accompanying figures.
Die Erfindung soll anhand beigefügter Figuren noch näher erläutert werden. Einander entsprechende Elemente und Bauteile sind in den Figuren dabei mit gleichen Bezugszeichen versehen. Zugunsten einer besseren Übersichtlichkeit der Figuren wurde auf eine maßstabsgetreue Darstellung verzichtet. Es zeigen in schematischer Darstellung:
-
Figur 1 : eine erfindungsgemäße Schmalbahndruckmaschine -
Figur 2 : ein erfindungsgemäßes Druckwerk -
Figur 3a : eine erste, erfindungsgemäße Ausführungsvariante des Druckwerks ausFigur 2 -
Figur 3b : eine zweite, nicht erfindungsgemäße Ausführungsvariante des Druckwerks ausFigur 2
-
FIG. 1 : a narrow web printing machine according to the invention -
FIG. 2 : a printing unit according to the invention -
FIG. 3a : a first, inventive embodiment of the printing fromFIG. 2 -
FIG. 3b : a second embodiment of the printing unit not according to the inventionFIG. 2
In der
In der Darstellung der einzelnen Druckwerke 110, hier Flexodruckwerke sind neben den Druckformzylindern 1, den Gegendruckzylindern 2 und den Farbauftragswalzen auch Kammerrakel angedeutet. Des Weiteren weisen die Druckwerke 110 in der Druckmaschine 100 diverse Trocknungseinrichtungen auf: Den Gegendruckzylindern 2 sind an dem jeweiligen Druckspalt S des Druckwerks 110 nachgeordnet UV-Trocknungseinrichtungen zugeordnet, so dass das bedruckte Substrat 144 direkt auf dem Gegendruckzylinder 2 getrocknet werden kann. Die Druckwerke 110 weisen auch Bahnleitwalzen 160 zur Führung des bahnförmigen Substrats 144 auf. In der gezeigten Ausführungsform umfasst das fünfte Druckwerk 110 eine Heißlufttrocknungseinrichtung 162. Alternativ könnte auch hier eine UV- oder eine IR-Trocknungseinrichtung eingesetzt werden. Nachfolgend ist ein Stanzwerk 150 angeordnet, welches als rotierende Werkzeuge einen Stanzzylinder und einen Gegenstanzzylinder aufweist. Zusätzlich bzw. alternativ zu dem Stanzwerk kann auch ein Prägewerk, beispielsweise ein Heißfolienprägewerk Verwendung finden.In the illustration of the
In einer alternativen, nicht dargestellten Ausführungsform können einzelne Flexodruckwerke auch durch ein Offset-, Tiefdruck- bzw. durch ein Rotationssiebdruckwerk ersetzt werden.In an alternative, not shown embodiment, individual flexographic printing units can also be replaced by an offset, gravure or by a rotary screen printing unit.
Gegendruckzylinder 2 geschlungen ist. Zur Veränderung des Durchmessers des Schlauches 6 ist dieser über nicht näher dargestellte Leitungen mit einem Kompressor 9 verbunden, so dass durch Veränderung des Drucks in dem Schlauch 6 der Spalt S zwischen den Zylindern 1, 2 verändert und damit das Abrollverhalten der Zylinder 1, 2 beeinflusst werden kann.
Diese Ausführungsvariante lässt sich in Druckwerken 110 einfach nachrüsten, indem der übliche Gegendruckzylinder 2 durch einen Gegendruckzylinder 2 mit integrierten Dämpfungselementen 5 und Stellelementen 10 ersetzt wird.This embodiment variant can be easily retrofitted in
- 11
- Druckzylinderpressure cylinder
- 22
- GegendruckzylinderImpression cylinder
- 33
- Drehachse DruckzylinderRotary axis pressure cylinder
- 44
- Drehachse GegendruckzylinderRotary axis impression cylinder
- 55
- Dämpfungselementdamping element
- 66
- Schlauchtube
- 77
- Gummiringrubber ring
- 88th
- Stellelementactuator
- 99
- Kompressorcompressor
- 1010
- Mechanisches KontaktelementMechanical contact element
- 100100
- Druckmaschinepress
- 110110
- Druckwerkprinting unit
- 126126
- Gestellmodulrack module
- 144144
- Substratsubstratum
- 146146
- Substratrollesubstrate roll
- 148148
- Zuführstationfeeding
- 150150
- Bearbeitungswerk, StanzwerkMachining plant, punching plant
- 152152
- Auslaufstationexit station
- 154154
- Etikettenrollelabel roll
- 160160
- Bahnleitwalzeweb guide
- 162162
- HeißlufttrocknerHot air dryer
- MM
- MaschinenlaufrichtungMachine direction
- SS
- Druckspalt (Abstand Zylinder)Pressure gap (cylinder distance)
- ZZ
- Zustellbewegung Kontaktelement zum Pressen des GummiringesFeed movement contact element for pressing the rubber ring
Claims (6)
- Printing unit (110) for printing on a web-shaped or sheet-shaped substrate (144) including a printing cylinder (1) rotatable about an axis of rotation (3) and an impression cylinder (2) rotatable about an axis of rotation (4) essentially parallel to the axis of rotation (3) of the printing cylinder (1),
wherein between the printing cylinder (1) and the impression cylinder (2) a printing nip (S) is formed and the substrate (144) is printed on, wherein the printing cylinder (1) or the impression cylinder (2) include a respective elastic, annular damping element (5) in both marginal regions of its circumferential surface,
wherein the printing unit (110) has at least one adjustment element (8, 9) assigned to the damping element (5), and
wherein the damping properties of a respective damping element (5) are adjustable by the at least one adjustment element (8, 9),
characterized
in that a respective damping element (5) is designed as a hose (6) made of an elastic material and filled with a fluid and the at least one adjustment element (9) is provided to change the pressure in a respective hose. - Printing unit according claim 1,
characterized
in that the printing unit (110) is designed as a flexographic printing unit. - Printing unit according to claim 1 or 2,
characterized
in that the adjustment element comprises a pump or compressor (9). - Printing unit according to any one of the preceding claims,
characterized
in that air is used as the fluid. - Printing unit according to any one of the preceding claims,
characterized
in that a hydraulic liquid is used as the fluid. - Narrow-web printing machine (100) including a printing unit (110) according to any one of the preceding claims.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012022881.3A DE102012022881A1 (en) | 2012-11-23 | 2012-11-23 | Printing unit with damping elements |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2735445A2 EP2735445A2 (en) | 2014-05-28 |
EP2735445A3 EP2735445A3 (en) | 2015-08-26 |
EP2735445B1 true EP2735445B1 (en) | 2019-09-04 |
Family
ID=49578151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13192424.3A Active EP2735445B1 (en) | 2012-11-23 | 2013-11-12 | Printing unit with damping elements on printing cylinders |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2735445B1 (en) |
CN (1) | CN103832051B (en) |
DE (1) | DE102012022881A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3388239A1 (en) * | 2017-04-15 | 2018-10-17 | FVK Reklam Matbaa Yayin Sanayi ve Ticaret Limited Sirketi | Chart printing, cutting, and boring machine that allows continuous production on a single line |
CN107584861B (en) * | 2017-09-29 | 2023-03-17 | 浙江炜冈科技股份有限公司 | Printing unit comprising offset printing unit and flexo printing unit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010001747A1 (en) * | 2010-02-10 | 2011-08-11 | KOENIG & BAUER Aktiengesellschaft, 97080 | Conic bearer ring for e.g. cylinder of printing machine, has chamber filled with incompressible fluid and comprising lead that is arranged at stampers, where outer radius of ring is variable in reversible manner |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2724331A (en) * | 1953-09-03 | 1955-11-22 | H H Heinrich Inc | Cylinder bearers for rotary printing presses |
GB822833A (en) * | 1956-11-02 | 1959-11-04 | Zimmer Johannes | Improvements in or relating to the supporting of rollers in web working equipment |
DE2701670A1 (en) * | 1977-01-17 | 1978-07-20 | Maschf Augsburg Nuernberg Ag | OFFSET ROTARY PRINTING MACHINE |
DE2753487A1 (en) | 1977-12-01 | 1979-06-07 | Rueesch Ferd Ag | Rotary printing machine for printing different formats - facilitates rapid changing of printing cylinder without need for subsequent realignment of machinery |
DE3230118C1 (en) * | 1982-08-13 | 1984-05-03 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Printing unit cylinder with a device for reducing the bending vibrations excited by the channel roll |
NO156440C (en) * | 1984-08-24 | 1987-09-23 | Gustav Paulsen | CLIENT HEIGHT VARIATION COMPENSATION DEVICE. |
CZ20013876A3 (en) * | 2000-12-01 | 2002-07-17 | Heidelberger Druckmaschinen Ag | Method for reducing vibration in printing machine |
DE102006042959B4 (en) * | 2006-05-17 | 2012-06-06 | Officine Meccaniche Giovanni Cerutti S.P.A. | Method and apparatus for reducing vibrations of a rotating cylinder of a printing machine |
DE102007045876A1 (en) * | 2007-09-25 | 2009-04-09 | Gallus Druckmaschinen Gmbh | Printing unit and printing press |
CN101700710A (en) * | 2009-10-30 | 2010-05-05 | 西安正和机械设备有限公司 | Eccentric adjustable paper thickness compensation mechanism of flexography unit |
CN202242272U (en) * | 2011-09-29 | 2012-05-30 | 湖南金沙利彩色印刷有限公司 | Printing machine and frame pressing device |
-
2012
- 2012-11-23 DE DE102012022881.3A patent/DE102012022881A1/en not_active Withdrawn
-
2013
- 2013-11-12 EP EP13192424.3A patent/EP2735445B1/en active Active
- 2013-11-22 CN CN201310597850.XA patent/CN103832051B/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010001747A1 (en) * | 2010-02-10 | 2011-08-11 | KOENIG & BAUER Aktiengesellschaft, 97080 | Conic bearer ring for e.g. cylinder of printing machine, has chamber filled with incompressible fluid and comprising lead that is arranged at stampers, where outer radius of ring is variable in reversible manner |
Also Published As
Publication number | Publication date |
---|---|
CN103832051A (en) | 2014-06-04 |
DE102012022881A1 (en) | 2014-05-28 |
EP2735445A3 (en) | 2015-08-26 |
CN103832051B (en) | 2018-04-20 |
EP2735445A2 (en) | 2014-05-28 |
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