EP0554542B1 - Elément pour impression en offset - Google Patents

Elément pour impression en offset Download PDF

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Publication number
EP0554542B1
EP0554542B1 EP92120894A EP92120894A EP0554542B1 EP 0554542 B1 EP0554542 B1 EP 0554542B1 EP 92120894 A EP92120894 A EP 92120894A EP 92120894 A EP92120894 A EP 92120894A EP 0554542 B1 EP0554542 B1 EP 0554542B1
Authority
EP
European Patent Office
Prior art keywords
forme
printing forme
register
offset printing
cylinder
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
EP92120894A
Other languages
German (de)
English (en)
Other versions
EP0554542A1 (fr
Inventor
Eduard Hoffmann
Johann Winterholler
Wolfgang Prem
Herbert Stöckl
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6446760&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0554542(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0554542A1 publication Critical patent/EP0554542A1/fr
Application granted granted Critical
Publication of EP0554542B1 publication Critical patent/EP0554542B1/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
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/16—Curved printing plates, especially cylinders
    • B41N1/20—Curved printing plates, especially cylinders made of metal or similar inorganic compounds, e.g. plasma coated ceramics, carbides
    • 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
    • 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
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • 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
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1212—Devices for attaching printing elements or formes to supports for attaching flexible printing formes using pneumatic force
    • 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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y10T29/49547—Assembling preformed components
    • Y10T29/49558—Includes securing removable cover on roller

Definitions

  • the invention relates to an offset printing form made of a metallic material for a forme cylinder of a printing press and a method for producing such an offset printing form.
  • the most common forms of printing in offset printing are the pre-coated aluminum plates, the great advantage of which is the simplicity and speed of manufacture, or the multi-metal plates, which mostly consist of three metals (trimetal), aluminum or steel sheet being generally used as the carrier metal. These types are particularly suitable for larger print runs and high loads. In addition, their good surface properties can be significantly improved by additional anodization.
  • this printing form has fitting holes for the dowel pins of a clamping device of the printing form cylinder on two opposite edges.
  • the printing form is centered on the dowel pins and hooked into a cylinder channel with the leading edge, which was previously bent over.
  • the end of the printing form is also inserted into the cylinder channel so that the printing form can be clamped.
  • This requires a channel across the cylinder width and clamping segments that extend through the cylinder in the channel.
  • the printing forms begin and end in this area. This interruption of the printing form means that endless images cannot be produced.
  • the printing speed is limited due to vibration loads of the cylinder through the channel and the clamping device. This vibration exposure also affects print quality.
  • GB-A-578 777 discloses a printing form in which the mutually facing, folded plate edges are welded to one another on the cylinder, but are otherwise designed for gravure printing.
  • the object of the present invention is to improve the print quality achieved by a generic printing form by eliminating the above-mentioned vibration load and at the same time allowing a higher rotational speed of the printing form cylinder.
  • This offset printing form produced by the method according to the invention can be used in conjunction with a forme cylinder without a channel and clamping segment, which is known, for example, from German patent step DE-PS 27 00 118.
  • the offset printing form can be pushed onto the form cylinder using compressed air. In the working position, it is displaceable on the forme cylinder, yet it can be easily removed from it without destroying it and can therefore be reused.
  • the use of conventional printing form clamping devices, the channel and clamping segments are no longer necessary and can thus be saved. Only register devices are required to apply the printing form in accordance with the register.
  • Known devices such as markings on the surface of the forme cylinder, which are brought into line with markings on the thin offset printing form, or register pins of the form cylinder, into which the printing form can be hung in register, can also be used here.
  • commercially available offset printing plates can be used and previous plate copies can be used unchanged. The channelless printing enables cost-effective cylinder production, an improvement in print quality and higher printing speeds.
  • a thin offset printing form 1 with a thickness s of approximately 0.3 mm is formed from a metallic material to form a sleeve with a diameter d of approximately 300 mm and a width l of approximately 1,600 mm.
  • the material can be aluminum or a multi-metal or tri-metal.
  • the beginning and end of offset printing form 1 are longitudinally welded together.
  • the weld seam 2 preferably has a width b of approximately 0.7 mm.
  • the weld seam 2 has a concave shape on its top and bottom, so that it is not noticeable on the print.
  • Printing form 1 thus has a coherent, channel-free outer surface.
  • the printing form 1 On one end face 3 (FIG. 3), the printing form 1 is provided with register devices in the form of fitting bores 4, which cooperate with register pins on the surface of the forme cylinder.
  • register devices On one end face 3 (FIG. 3), the printing form 1 is provided with register devices in the form of fitting bores 4, which cooperate with register pins on the surface of the forme cylinder.
  • the production process for printing form 1 comprises the following steps.
  • a plate is cut to the size corresponding to the circumference and the width of the forme cylinder.
  • At least one end face 3 or 5 is provided with register devices 4, 6 by means of a plate punch.
  • the plate-shaped blank is clamped in register in the form of a sleeve in a welding device and the beginning and end of the printing form 1 are welded lengthwise. This is preferably done using a neodymium-YAG laser.
  • the regulation of the laser power and the possibility of a continuous and pulsed operating mode allow a controlled and exactly reproducible energy influence on the printing form 1. Heat load and warpage of the weld metal are extremely low in comparison with other thermal processes.
  • the welding process is carried out in such a way that a weld seam 2 is formed which has a concave shape on the top and bottom.
  • the sleeve-shaped printing forme 1 is then pushed onto the forme cylinder while expanding by means of compressed air.
  • the removal of the compressed air causes the printing form to adhere positively to the forme cylinder.
  • the coating and exposure of the printing form 1 can be carried out on the one hand before the beginning and end of the printing form 1 outside the printing press by photochemical means, and on the other hand after the sleeve-shaped printing form 1 has been pushed on by coating and exposing the printing form on the form cylinder all around.
  • the principle of the invention is therefore to form a commercially available pressure plate made of a metallic material for the purpose of channelless printing into a sleeve, which frictionally and register-wise in the working position, but releasably and reusably encased the forme cylinder and thus has a coherent channel-free outer surface.
  • the invention is not limited to a printing form which is formed into a sleeve by means of a weld seam. It is also conceivable to establish the connection between the beginning and end of the printing form by means of an adhesive bond, for example the beginning of the printing form being glued to half of a longitudinal saddle, the end of the printing form glued to the other half of the longitudinal saddle and the joints from the beginning and end are additionally glued. Then the sleeve-shaped printing form together with the saddle is pushed onto the forme cylinder.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Claims (12)

  1. Plaque d'impression offset en matériau métallique destinée à un cylindre porte-plaque d'une presse d'imprimerie, la plaque d'impression étant amenée par cintrage d'une plaque rectangulaire (1) en une forme de cylindre creux, les bords de la plaque (1) se mettant l'un contre l'autre étant reliés l'un à l'autre d'une manière fixe, de sorte que la plaque d'impression offset dispose d'une surface externe sans canal continue et puisse être transférée sur le cylindre porte-plaque par entraînement par friction, de manière toutefois amovible et des dispositifs de repérage (4, 6) étant prévus sur au moins une face (3, 5) pour assurer le repérage selon la périphérie et latéralement.
  2. Plaque d'impression offset selon la revendication 1, caractérisée en ce que le début et la fin de la plaque d'impression offset (1) sont reliés au moyen d'une soudure (2).
  3. Plaque d'impression offset selon la revendication 1, caractérisée en ce que le début et la fin de la plaque d'impression offset (1) sont reliés au moyen d'un collage, le début de la plaque d'impression (1) étant collé sur une moitié d'une assise se développant longitudinalement et la fin de la plaque d'impression (1) étant collée sur l'autre moitié de l'assise.
  4. Plaque d'impression offset selon la revendication 1, caractérisée en ce que le matériau est de l'aluminium.
  5. Plaque d'impression offset selon la revendication 1, caractérisée en ce que le matériau est un matériau polymétallique.
  6. Plaque d'impression offset selon la revendication 1, caractérisée en ce que les dispositifs de repérage sont développés en forme de trous d'ajustage (4), qui coopèrent avec des goujons de repérage sur la surface du cylindre porte-plaque.
  7. Plaque d'impression offset selon la revendication 1, caractérisée en ce que les dispositifs de repérage sont développés en forme de creux (6) sur les deux faces (3, 5) de la plaque d'impression (1), qui coopèrent avec des goujons de repérage sur la surface du cylindre porte-plaque.
  8. Procédé pour la fabrication d'une plaque d'impression offset en matériau métallique destinée à un cylindre porte-plaque d'une presse d'imprimerie, caractérisé en ce qu'une plaque est découpée à la mesure correspondant au périmètre et à la largeur du cylindre porte-plaque et est pourvue sur au moins une face (3, 5) de dispositifs de repérage (4, 6), en ce que la découpe en forme de plaque est sensibilisée et insolée par une technique traditionnelle, est mise en forme de manchon en fonction du repérage dans un dispositif de soudage, en ce que le début et la fin de la plaque d'impression (1) sont soudés par soudure longitudinale, le procédé de soudage étant établi de sorte qu'une soudure (2), qui présente une forme concave au niveau des surfaces inférieure et supérieure, se produise et en ce que la plaque d'impression (1) en forme de manchon est enfilée sur le cylindre porte-plaque par élargissement au moyen d'air comprimé.
  9. Procédé pour la fabrication d'une plaque d'impression offset en matériau métallique destinée à un cylindre porte-plaque d'une presse d'imprimerie, caractérisé en ce qu'une plaque est découpée à la mesure correspondant au périmètre et à la largeur du cylindre porte-plaque et est pourvue sur au moins une face (3, 5) de dispositifs de repérage (4, 6), en ce que la découpe en forme de plaque est mise en forme de manchon dans un dispositif de soudage, en ce que le début et la fin de la plaque sont soudés par soudure longitudinale, le procédé de soudage étant établi de sorte qu'une soudure (2), qui présente une forme concave au niveau des surfaces inférieure et supérieure, se présente et en ce que la plaque (1) en forme de manchon est enfilée sur le cylindre porte-plaque par élargissement au moyen d'air comprimé et en ce que la plaque (1) est sensibilisée et insolée circulairement sur le cylindre porte-plaque selon un ajustement serré.
  10. Procédé selon la revendication 8 ou 9, caractérisé en ce que la découpe en forme de plaque au moyen d'une matrice de plaques est pourvue de trous d'ajustage (4) en tant que dispositifs de repérage.
  11. Procédé selon la revendication 8 ou 9, caractérisé en ce que pour le procédé de soudage est utilisé un laser YAG au néodyme.
  12. Procédé pour la fabrication d'une plaque d'impression offset en matériau métallique destinée à un cylindre porte-plaque d'une presse d'imprimerie, caractérisé en ce qu'une plaque est découpée à la mesure correspondant au périmètre et à la largeur du cylindre porte-plaque, des marquages sont mis en place au début et à la fin de la plaque au moins au niveau d'une face, le début de la plaque d'impression est collé sur une moitié d'une assise se développant longitudinalement, la fin de la plaque d'impression (1) est collée conformément au repérage sur l'autre moitié de l'assise et la plaque d'impression est glissée avec l'assise sur le cylindre.
EP92120894A 1991-12-11 1992-12-08 Elément pour impression en offset Expired - Lifetime EP0554542B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4140768 1991-12-11
DE4140768A DE4140768C2 (de) 1991-12-11 1991-12-11 Offset-Druckform

Publications (2)

Publication Number Publication Date
EP0554542A1 EP0554542A1 (fr) 1993-08-11
EP0554542B1 true EP0554542B1 (fr) 1996-04-10

Family

ID=6446760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92120894A Expired - Lifetime EP0554542B1 (fr) 1991-12-11 1992-12-08 Elément pour impression en offset

Country Status (5)

Country Link
US (1) US5379693A (fr)
EP (1) EP0554542B1 (fr)
JP (1) JP3272427B2 (fr)
CA (1) CA2083682C (fr)
DE (2) DE4140768C2 (fr)

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DE102005035858B3 (de) * 2005-07-30 2006-07-13 Koenig & Bauer Ag Vorrichtung zum Aufziehen eines Sleeves auf einen Druckzylinder
DE102005035857A1 (de) * 2005-07-30 2007-02-01 Koenig & Bauer Ag Druckzylinder

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DE4412873C2 (de) * 1993-05-13 1995-06-22 Roland Man Druckmasch Registereinrichtung für eine hülsenförmige Offset-Druckform
DE4315996C1 (de) * 1993-05-13 1994-08-04 Roland Man Druckmasch Registereinrichtung für eine hülsenförmige Offset-Druckform
DE4323750C2 (de) * 1993-07-15 1997-03-27 Roland Man Druckmasch Offset-Druckform und Verfahren zur Herstellung einer solchen Offset-Druckform
DE4338467C1 (de) * 1993-11-11 1995-02-23 Roland Man Druckmasch Verfahren zur Herstellung einer hülsenförmigen Druckform
DE4342159C2 (de) * 1993-12-10 1997-04-10 Roland Man Druckmasch Formzylinder für eine hülsenförmige Druckform
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JP5402054B2 (ja) * 2009-02-13 2014-01-29 セイコーエプソン株式会社 搬送ローラー、搬送ユニット、及び印刷装置
WO2011077944A1 (fr) * 2009-12-24 2011-06-30 ユニバーサル製缶株式会社 Cylindre porte-plaque pour plaque d'impression à manchon, procédé d'utilisation de cylindre porte-plaque pour plaque d'impression à manchon, et appareil d'impression de boîte
US20130139714A1 (en) * 2011-12-02 2013-06-06 E.I. Du Pont De Nemours And Company Method for making flexographic printing forms by welding edges of photosensitive elements with microwave energy
US9878531B2 (en) 2013-12-19 2018-01-30 Goss International Americas, Inc. Reimageable and reusable printing sleeve for a variable cutoff printing press
JP6316121B2 (ja) * 2014-06-30 2018-04-25 昭和アルミニウム缶株式会社 版胴、版装着装置
JP6559411B2 (ja) * 2014-11-04 2019-08-14 昭和アルミニウム缶株式会社 印刷用版の成形方法及び印刷用版の円筒状成形装置
JP2016104532A (ja) * 2014-12-01 2016-06-09 昭和アルミニウム缶株式会社 印刷用版
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CN115230294A (zh) * 2021-04-23 2022-10-25 山东新巨丰泰东包装有限公司 印版

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005035858B3 (de) * 2005-07-30 2006-07-13 Koenig & Bauer Ag Vorrichtung zum Aufziehen eines Sleeves auf einen Druckzylinder
DE102005035857A1 (de) * 2005-07-30 2007-02-01 Koenig & Bauer Ag Druckzylinder
DE102005035857B4 (de) * 2005-07-30 2011-10-13 Koenig & Bauer Aktiengesellschaft Druckzylinder

Also Published As

Publication number Publication date
DE4140768C2 (de) 1994-08-18
CA2083682A1 (fr) 1993-06-12
DE4140768A1 (de) 1993-06-17
JP3272427B2 (ja) 2002-04-08
US5379693A (en) 1995-01-10
JPH05254096A (ja) 1993-10-05
DE59205967D1 (de) 1996-05-15
EP0554542A1 (fr) 1993-08-11
CA2083682C (fr) 1996-10-29

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