WO1988006522A1 - Method for mounting a plate on a cylinder and device for carrying out the method - Google Patents

Method for mounting a plate on a cylinder and device for carrying out the method Download PDF

Info

Publication number
WO1988006522A1
WO1988006522A1 PCT/DK1988/000034 DK8800034W WO8806522A1 WO 1988006522 A1 WO1988006522 A1 WO 1988006522A1 DK 8800034 W DK8800034 W DK 8800034W WO 8806522 A1 WO8806522 A1 WO 8806522A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
printing plate
plate
parallel
printing
Prior art date
Application number
PCT/DK1988/000034
Other languages
English (en)
French (fr)
Inventor
Allan Banke
Original Assignee
Allan Banke
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 Allan Banke filed Critical Allan Banke
Priority to EP88902426A priority Critical patent/EP0417080B1/en
Priority to DE3851065T priority patent/DE3851065T2/de
Publication of WO1988006522A1 publication Critical patent/WO1988006522A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/005—Attaching and registering printing formes to supports
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/36—Means for registering or alignment of print plates on print press structure

Definitions

  • the invention relates to a method for the mounting of a flexible printing plate on a plate cylinder for a printing machine and as presented in the preamble to claim 1, and an apparatus for the execution of the method as presented in the preamble to claim 5.
  • One of the aids used is a so-called pin device, which is a mechanical aid, and which is used in the mount ⁇ ing of printing plates for flexo-printing when the printing task does not demand great precision.
  • a newer method consists of providing the printing plate with a number of holes, these being drilled or punched along one of the edges of the printing plate, said holes corresponding to pins on a transverse rail, so that the printing plate is secured at the moment of mounting, cf. for example Norwegian patent document no. 126,725, and USA patent document no. 4,380,956. Where the actual mounting is concerned, this method is excellent, but it demands an extra process with very precise location of the holes in the printing plate, whereby the cost of the printing plate is considerably increased.
  • the printing plate is provided with register marks arranged for checking the position of the printing plate on the cylinder when it has been mounted in accordance with the head line on the table. If the register check shows that the mounting of the printing plate is incorrect, one must start from the beginning again.
  • the known methods and devices are encumbered with a number of sources of error, and with some of the methods the result of the mounting depends on the operator's skill and knowledge of both the? mounting device and the subsequent printing process, parti ⁇ cularly if a good product is to be obtained from the printing machine in the production of multi-colour prints.
  • the known methods are moreover very time con- suming and contribute to a heavy increase in the cost of multi-colour prints.
  • the object of the invention is to present a method and an apparatus for the mounting of a flexible printing plate on a plate cylinder (printing cylin ⁇ der), whereby th drawbacks of the known technique are avoided, the time consumed in the mounting is strong ⁇ ly reduced, the mounting precision is considerably increased, and the demand for specialist knowledge among operators can be reduced, in that the actual mounting is not effected until the correct re ⁇ gistration has been ensured.
  • the reduction in the time consumption and the in- crease in precision are achieved because the printing plate is secured by a holding device when it has been positioned completely correctly by means of the re ⁇ gister marks, and the printing plate is secured in its correct position by the holding device while, with a movement in relation to the cylinder, it is applied to said cylinder.
  • the cylinder is provided beforehand with an adhesive layer, for example in the form of a double adhesive tape. Since the mounting is effected by a movement, during which the printing plate is constantly held parallel with the cylinder, one can re-check the registration by means of the op ⁇ tical spotting devices during the whole of the mount ⁇ ing procedure. Practical experiments have shown that the time used in mounting can be reduced to around a fifth of the time consumed when using the reflection mounting device, and that mounting precision is in ⁇ creased many times, whereby the printing result is greatly improved through the better registration.
  • register marks are preferably located and produced as presented and characterized in claims 2 and 3. It is obvious that the register marks will leave an impression on the material outside the picture, but in many cases this can be accepted, for example when printing multi-colour packaging, because the impression of the register .mark is so small that it appears merely as a dot on the material. Of course, there is nothing to prevent these register marks be- ing cut off or milled off immediately before the ac ⁇ tual printing commences, but this means that the printing plate can not be mounted again following the method and using the apparatus according to the invention.
  • the register marks are preferably located outside the print picture because this affords increased precision, and register marks in the print picture itself are avoided.
  • a pair of register marks are used as presented in more detail and characterized in claim 4, so that the printing plate is mounted with the register marks lying precisely vertical over the cylinder axis.
  • the optical spotting devices are preferably configur ⁇ ed and disposed as characterized in claim 6, thus enabling them to be placed and secured in the correct position in relation to the register marks as quickly as possible. Moreover, the registration can be check ⁇ ed when the printing plate is led down towards the cylinder, so that the actual registration can be re- checked immediately prior to the mounting itself. If a further set of registration marks are provided at the two other opposite sides of the printing plate, these marks can be used for re-checking of the mount ⁇ ed printing plate.
  • the apparatus according to the invention is prefer- ably configured as presented and characterized in claim 7.
  • the printing plate can hereby be secured and positioned very simply by means of a two-part table until the correct registration has been achieved. It is obvious that other means, such as weights or mechanical clamping elements, can be used to secure the printing plate on the two-part table, but by configuring the table as a so-called suction table, possibly with regulation of the vacuum, provides an apparatus which can be-operated very quickly.
  • tongs or clamping arrangements can be used which hold the printing plate stretched out immediately above the cylinder, said tongs or clamping arrangements being capable of traversing upwards or downwards, for example by means of parallel ball-type guideways, or one can lead the cylinder towards the printing plate.
  • the apparatus according to the invention is prefer- ably configured as presented and characterized in claim 8. This provides the possibility of removing the two-part table without any movement on the part of the printing table, the reason being that the printing plate is in contact with the cylinder and adhered firmly to this along a line over the centre.
  • the two table plates are led parallel out to each side, and the rest of the printing plate is folded around the cylinder in the normal manner.
  • the apparatus according to the invention can be configured as presented and characterized in claim 9.
  • the printing plate can thus be displaced in a direction at right angles to the cylinder, without the registration marks leaving the sighting line.
  • the apparatus according to the invention is preferably configured as presented and characterized in claim 10, whereby the precision of the positioning of the printing plate in accordance with the register marks is greatly increased.
  • Fig. 1 is a sketch showing the principle of the invention.
  • Fig. 2 shows the actual sighting image on a larger scale
  • Fig. 3 shows a printing plate provided with re ⁇ gister marks
  • Fig. 4 shows in detail an embodiment of the appa ⁇ ratus according to the invention.
  • pairs of register marks 5 and/or 5' are provided, these being approximately 0.05 - 0.5 mm, preferably 0.2 - 0.3 mm in diameter.
  • the register marks are produced photographically-chemically on the printing plate in the same way as the actual print picture 3, for example in the form of a relief print- ing picture.
  • the cylinder When such a printing plate is to be mounted on a plate cylinder 1, the cylinder is first cleaned in the normal way and provided with an adhesive layer, for example in the form of a double adhesive tape.
  • the cylinder 1 is placed in a holder 16, where the cylinder's axle journals 4, which moreover carry not- shown drive gears, rest on smaller rollers, so that the cylinder can be rotated during the cleaning and the applying of the tape.
  • means are pro ⁇ vided for securing the cylinder so that it lies immovably fixed during the mounting of the printing plate, plus possible index-elements if two or more printing plates are to be mounted per circumference.
  • holder 16 is adjustable for height in the direction shown by the arrow 18, for example by means of the manoeuvring element 17 and the ball guide 19, see fig. 4.
  • Fig. 4 of the drawing shows an embodiment of the apparatus according to the invention, seen from the cylinder end and shown partly in section.
  • the printing plate 2 is placed on a two-part table 12, which is a plane-ground, steel table with under- lying vacuum channels 13, which with a number of small holes in the table 12 form a suction table.
  • the table 12 is placed at a distance from the cylinder 1, so that the printing plate 2 is not in contact with the double adhesive tape hereon.
  • the printing plate 2 is positioned correctly on the table 12, in that the printing plate can be shifted on the table, but still secured by the suction from the vacuum chambers 13.
  • the optical spotting devices 6 are individually se ⁇ cured in each their ball-guide 10, and can be dis ⁇ placed parallel with the cylinder axis on the bars 9 in the direction of the arrow 11 and locked in any desired position.
  • the optical spotting devices focus vertically downwards towards the centre line of the printing cylinder.
  • the sighting image is shown .-in fig. 2, and shows here the correct positioning of the printing plate, in that the plate is positioned so that the register mark 5 sits precisely in the cross ⁇ hairs 8.
  • the printing plate 2 is now positioned correctly in relation to the cylinder 1, and particularly in re- lation to the centre axis of the cylinder, and the printing plate shall hereafter be mounted on the cy ⁇ linder.
  • This is effected by a parallel displacement of the two-part table 12 in the direction shown by the arrows 20, or by the cylinder 1 being moved up ⁇ wards towards the printing plate until the printing plate just touches the cylinder 1 in the free area between the two parts of the two-part table.
  • the means of displacement for this purpose are not shown in the drawing, but use can be made of any form of generally-known ball-guides or the like disposed in a parallel manner. However, these parallel guides are not necessary if the apparatus is arranged to lead the cylinder towards the printing plate.
  • the printing plate When the printing plate just touches the cylinder 1 along a line vertically over the cylinder axis, it will stick firmly to the cylinder along a line precisely vertically over the cylinder axis.
  • the printing plate is now completely ready for mounting, and for safety's sake one can use the optical spotting de ⁇ vices 6 to check whether the register marks still show the correct position of the printing plate. If this is the case, the two halves of the two-part table 12 are moved to their respective sides by means of the parallel guides 14, so that the rest of the printing plate can be folded around the cylinder. Be ⁇ fore the cylinder is removed from the apparatus and transferred to the printing machine, one can check by means of the optical spotting devices and the regist- er marks 5 or 5' that the printing plate is still in correct registration.
  • the invention can be executed by lifting the cylinder 1 instead of lowering the table 12, and that instead of adhesive on the cylinder, one can use adhesive on the back of the printing plate, merely provided that the table 12 is surface treated so that the printing plate does not stick to it, or by cover ⁇ ing the underside of the printing plate, for example with silicone paper, of which a central strip is re ⁇ moved at the commencement of the mounting, and the rest removed after the printing plate has been brought into adhesive contact with the cylinder along a generatrix line.
  • any other form of interim se ⁇ curing of the printing plate can be used.
  • the holding elements for holding the printing plate can be arranged lowermost and the cylinder up ⁇ permost, for example so that the cylinder is lowered towards the printing plate for contact and mounting, or the table is raised towards the cylinder. It will thus be sufficient to have a stationary tabletop, or a tabletop which can be raised, with a narrow slot through which the printing plate's register marks, which now face downwards, can be observed through un ⁇ derlying optical spotting devices.
  • the optical spotting devices are, for example, each equipped with a television camera, and the sighting images are shown on a screen at a convenient height.
PCT/DK1988/000034 1987-02-27 1988-02-24 Method for mounting a plate on a cylinder and device for carrying out the method WO1988006522A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP88902426A EP0417080B1 (en) 1987-02-27 1988-02-24 Device for mounting a plate on a cylinder
DE3851065T DE3851065T2 (de) 1987-02-27 1988-02-24 Vorrichtung zum montieren einer druckplatte auf einem zylinder.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK105787A DK171290B1 (da) 1987-02-27 1987-02-27 Apparat til montering af en bøjelig kliche på en formatcylinder til en trykmaskine
DK1057/87 1987-02-27

Publications (1)

Publication Number Publication Date
WO1988006522A1 true WO1988006522A1 (en) 1988-09-07

Family

ID=8100495

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1988/000034 WO1988006522A1 (en) 1987-02-27 1988-02-24 Method for mounting a plate on a cylinder and device for carrying out the method

Country Status (6)

Country Link
US (1) US4872407A (da)
EP (1) EP0417080B1 (da)
AU (1) AU1422588A (da)
DE (1) DE3851065T2 (da)
DK (1) DK171290B1 (da)
WO (1) WO1988006522A1 (da)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8912428U1 (da) * 1989-10-19 1991-02-21 Roosen, Reiner, 6450 Hanau, De
GB2262910A (en) * 1991-12-31 1993-07-07 Label Art Mounting flexible printing plates on cylinders.
GB2262911A (en) * 1991-12-23 1993-07-07 Label Art Mounting flexible printing plates on cylinders.
DE4207546A1 (de) * 1992-03-10 1993-09-23 Roland Man Druckmasch Verfahren und vorrichtung zum ausrichten von druckplatten auf dem plattenzylinder von druckmaschinen, insbesondere bogenoffsetdruckmaschinen
EP0893254A2 (en) * 1997-07-22 1999-01-27 E.I. Du Pont De Nemours And Company Method and apparatus for registration mounting printing plates
GB2398038A (en) * 2003-02-08 2004-08-11 Flexico Ltd Apparatus for mounting a printing plate to a printing cylinder
EP2397327A3 (en) * 2010-06-18 2015-08-12 Esko-Graphics Imaging GmbH Non-printing registration marks on a printing plate
WO2019001601A1 (de) * 2017-06-28 2019-01-03 Pass-Werk Gmbh & Co. Kg Schichtverbund-druckfolie
NL2020109B1 (en) * 2017-12-18 2019-06-25 Xeikon Prepress Nv Method for fixing and treating a flexible plate on a drum, and flexible plate for use therein

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NL8902600A (nl) * 1989-10-20 1991-05-16 Stork Brabant Bv Voorrapportering van een meerkleuren rotatiezeefdrukmachine.
US5065677A (en) * 1989-12-27 1991-11-19 Leader Engineering Fabrication Inc. Printing plate mounting and proofing apparatus
US5132911A (en) * 1989-12-27 1992-07-21 Leader Engineering Fabrication, Inc. Apparatus for mounting and proofing printing plates
US5317971A (en) * 1992-08-26 1994-06-07 Deye Jr Charles E Pin register mounter and method of mounting flexographic plates
DE4323750C2 (de) * 1993-07-15 1997-03-27 Roland Man Druckmasch Offset-Druckform und Verfahren zur Herstellung einer solchen Offset-Druckform
US5511479A (en) * 1994-06-27 1996-04-30 Tension Envelope Corporation System and method for providing pin register holes in flexible printing plates and apparatus and method for aligning plates on a flexographic printing press plate cylinder
DE19516368C2 (de) * 1995-05-04 1999-09-23 Neumeister Geb Gmbh Verfahren und Vorrichtung zur Anpassung der Lage von Druckplatten an die Verformung des zu bedruckenden Papieres
DE19522676A1 (de) * 1995-06-22 1997-01-02 Polygram Manufacturing & Distr Verfahren zur exakten Ausrichtung eines Druckbildes auf eine geometrisch richtige Druckposition einer Druckmaschine
US5907998A (en) * 1995-12-29 1999-06-01 Howard W. Demoore Anti-static, anti-smearing pre-stretched and pressed flat, precision-cut striped flexible coverings for transfer cylinders
US5676058A (en) * 1996-06-06 1997-10-14 Ireton; Robert E. Printing plate mounting system and method employing the same
US5771811A (en) * 1996-10-10 1998-06-30 Hurletron, Incorporated Pre-registration system for a printing press
US5828075A (en) * 1996-10-11 1998-10-27 Hurletron, Incorporated Apparatus for scanning colored registration marks
IT1293502B1 (it) * 1997-07-29 1999-03-01 Gabriella Cacchi Procedimento di montaggio di cliche' su maniche e relativo montaggio delle maniche su rulli di macchine da stampa flessografiche
JP3190956B2 (ja) * 1998-11-02 2001-07-23 株式会社金田機械製作所 新聞印刷用刷版の製造方法
JP3767778B2 (ja) * 1999-03-31 2006-04-19 富士写真フイルム株式会社 記録装置
US6117615A (en) * 1999-07-28 2000-09-12 E. I. Du Pont De Nemours And Company Method for mounting multiple printing elements onto a cylindrical element
JP3504623B2 (ja) * 2001-03-12 2004-03-08 マイクロ・テック株式会社 スクリーン印刷装置及びスクリーン製版セット方法
US6591746B2 (en) 2001-06-13 2003-07-15 Hurletron, Incorporated Registration system for printing press
US7044058B2 (en) * 2003-07-02 2006-05-16 Goss International Americas, Inc. Automatic motor phase presetting for a web printing press
NL1025791C2 (nl) * 2004-03-23 2005-09-26 Av Flexologic Bv Automatisch montage systeem.
US7275482B2 (en) * 2004-10-28 2007-10-02 Integrity Engineering, Inc. Ink proofer arrangement including substrate roll support and tensioner and method of using
US7600471B2 (en) 2005-05-10 2009-10-13 Westby Ronald K Hand proofer tool
EP1957270B1 (en) * 2005-10-17 2015-04-15 Gerald J. Gartner Method for mounting a plate to an adhesive member
US7819060B2 (en) * 2007-04-13 2010-10-26 E.I. Du Pont De Nemours And Company Method for mounting cylindrically-shaped printing forms
US8720335B2 (en) 2007-04-24 2014-05-13 Probity Engineering, Llc Offset hand proofer tool
EP2026132B1 (en) 2007-08-16 2013-03-13 E. I. Du Pont de Nemours and Company Process for making a cylindrically-shaped photosensitive element for use as a printing form
US8236479B2 (en) 2008-01-23 2012-08-07 E I Du Pont De Nemours And Company Method for printing a pattern on a substrate
WO2010014619A2 (en) 2008-07-28 2010-02-04 Integrity Engineering, Inc. Improvements to flexographic proofing tools and methods
EP2154572B1 (en) 2008-08-15 2017-05-03 E. I. du Pont de Nemours and Company Process for making a cylindrically-shaped photosensitive element for use as a printing form
ITBS20080205A1 (it) * 2008-11-12 2010-05-13 Sys Tec S R L Metodo e dispositivo per posizionare lastre di stampa flessografica su un supporto di stampa
DE102008054811B4 (de) * 2008-12-17 2023-10-19 Koenig & Bauer Ag Vorrichtung zum Erfassen der Lage einer Druckplatte
WO2012149408A1 (en) * 2011-04-28 2012-11-01 Leader Engineering-Fabrication, Inc. Method and apparatus for mounting a printing plate
JP7267395B2 (ja) 2018-04-06 2023-05-01 エスコ－グラフィックス イメージング ゲゼルシャフト ミット ベシュレンクテル ハフツング フレキソプレートにワークフロー情報を持続的にマーキングする方法、及びワークフロー情報をマーキングしたプレート
FR3085304B1 (fr) * 2018-08-31 2021-01-08 D Uniflexo Forme imprimante photosensible pour un procede d’impression flexographique comprenant des informations visibles et non imprimables, procede de preparation d’une telle forme imprimante
WO2021069489A1 (en) 2019-10-07 2021-04-15 Esko-Graphics Imaging Gmbh System and process for persistent marking of flexo plates and plates marked therewith

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US4611539A (en) * 1985-09-30 1986-09-16 Carl Ireton Device and method for the precision mounting of flexible printing plates
US4705590A (en) * 1986-11-12 1987-11-10 Edward Vandenberg Machine for adhesively mounting a printing plate on a plate roll

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DE3135442A1 (de) * 1980-09-09 1982-06-16 Protocol Engineering Ltd., Berkhamsted, Hertfordshire Verfahren zum befestigen wenigstens einer flexiblen druckplatte in einer rotationsdruckpresse oder dergleichen
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US2711691A (en) * 1953-01-29 1955-06-28 Jr William B Leavens Apparatus for positioning printing plates on rotary printing cylinders
US3390633A (en) * 1967-08-30 1968-07-02 In Line Products Inc Mounting device and method for applying a printing plate to a cylinder
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US4449452A (en) * 1982-05-28 1984-05-22 Rapid Packaging Services Pty. Ltd. Rapid plate mounter
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8912428U1 (da) * 1989-10-19 1991-02-21 Roosen, Reiner, 6450 Hanau, De
GB2262911A (en) * 1991-12-23 1993-07-07 Label Art Mounting flexible printing plates on cylinders.
GB2262911B (en) * 1991-12-23 1995-06-21 Label Art A method and apparatus for manufacturing labels
GB2262910A (en) * 1991-12-31 1993-07-07 Label Art Mounting flexible printing plates on cylinders.
DE4207546A1 (de) * 1992-03-10 1993-09-23 Roland Man Druckmasch Verfahren und vorrichtung zum ausrichten von druckplatten auf dem plattenzylinder von druckmaschinen, insbesondere bogenoffsetdruckmaschinen
EP0893254A3 (en) * 1997-07-22 1999-06-16 E.I. Du Pont De Nemours And Company Method and apparatus for registration mounting printing plates
EP0893254A2 (en) * 1997-07-22 1999-01-27 E.I. Du Pont De Nemours And Company Method and apparatus for registration mounting printing plates
GB2398038A (en) * 2003-02-08 2004-08-11 Flexico Ltd Apparatus for mounting a printing plate to a printing cylinder
GB2398038B (en) * 2003-02-08 2005-06-15 Flexico Ltd Plate mounting apparatus
EP2397327A3 (en) * 2010-06-18 2015-08-12 Esko-Graphics Imaging GmbH Non-printing registration marks on a printing plate
WO2019001601A1 (de) * 2017-06-28 2019-01-03 Pass-Werk Gmbh & Co. Kg Schichtverbund-druckfolie
NL2020109B1 (en) * 2017-12-18 2019-06-25 Xeikon Prepress Nv Method for fixing and treating a flexible plate on a drum, and flexible plate for use therein
WO2019121605A1 (en) * 2017-12-18 2019-06-27 Xeikon Prepress N.V. Method for fixing and treating a flexible plate on a drum and flexible plate
US11535028B2 (en) 2017-12-18 2022-12-27 Xeikon Prepress N.V. Method for fixing and treating a flexible plate on a drum and flexible plate

Also Published As

Publication number Publication date
DK105787A (da) 1988-08-28
DE3851065T2 (de) 1995-03-09
EP0417080A1 (en) 1991-03-20
DK105787D0 (da) 1987-02-27
AU1422588A (en) 1988-09-26
DK171290B1 (da) 1996-08-26
US4872407A (en) 1989-10-10
DE3851065D1 (de) 1994-09-15
EP0417080B1 (en) 1994-08-10

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