EP1957272A1 - Procede et dispositif de gravure d'images sur une forme en creux effaçable et reutilisable - Google Patents

Procede et dispositif de gravure d'images sur une forme en creux effaçable et reutilisable

Info

Publication number
EP1957272A1
EP1957272A1 EP06806601A EP06806601A EP1957272A1 EP 1957272 A1 EP1957272 A1 EP 1957272A1 EP 06806601 A EP06806601 A EP 06806601A EP 06806601 A EP06806601 A EP 06806601A EP 1957272 A1 EP1957272 A1 EP 1957272A1
Authority
EP
European Patent Office
Prior art keywords
gravure
grid
erasable
laser beam
printing
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.)
Withdrawn
Application number
EP06806601A
Other languages
German (de)
English (en)
Inventor
Hartmut Fuhrmann
Mladen Frlan
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
Manroland 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
Application filed by Manroland AG filed Critical Manroland AG
Publication of EP1957272A1 publication Critical patent/EP1957272A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/006—Cleaning, washing, rinsing or reclaiming of printing formes other than intaglio formes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/02—Engraving; Heads therefor
    • B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
    • B41C1/05—Heat-generating engraving heads, e.g. laser beam, electron beam

Definitions

  • the invention relates to a method and a device for imaging an erasable and reusable gravure printing form according to the preamble of claims 1 and 9.
  • the gravure printing process is a particularly simple printing process, which is characterized by the fact that the coloring does not first have to reach an equilibrium, as is the case with offset inking systems, but virtually immediately offers the substrate the correct amount of ink. With the gravure printing a very high print quality is achieved and it can be printed on a wide variety of substrates. This advantage is offset by the considerable expense that is required for the production of a gravure form.
  • EP 0 730 953 B1 and EP 0 813 957 B1 treat erasable intaglio printing forms intended to simplify the production of intaglio printing plates. Specifically, there is a pre-structured Tiefticianrohform filled with a min. On the maximum amount of ink to be transferred designed basic grid in a first step by means of a liquefiable substance by a request direction.
  • a substance for the filling for example, a thermoplastic resin or a wax, paints or a crosslinkable polymer melt or - solution, which is also known as a reactive system and which is characterized by an extremely high abrasion resistance, or just UV ink can be used.
  • the gravure form can be burned imagewise by thermal energy action by means of a pixel transfer unit, in particular by means of a laser analogous to an external drum.
  • a pixel transfer unit in particular by means of a laser analogous to an external drum.
  • NdYAG or NdYLF lasers are used, which are switched via an acousto-optical modulator in several intensity levels. But it can also - depending on the required resolution - CO 2 laser can be used.
  • images which are smaller than the surface elements of the basic grid of the gravure blank can be addressed by the imagewise ablation, wherein in particular the imagewise ablation can even be carried out essentially independently of the basic grid.
  • the imagewise ablation can also be adapted to the basic grid, i. to be in a certain geometric relationship to it. In the ideal case, the image-wise ablation performs structurally necessary structuring of the depressions of the basic grid.
  • the gravure form can be colored by means of a Einärbesystems, so that can be printed on a substrate in the gravure printing.
  • the surface of the gravure mold is regenerated again, by cleaning them from paint residues, the liquefiable substance preferably completely removed from the pre-structured wells and filled the wells again evenly.
  • the objective described therein is to simplify the production of a gravure form and the conversion of the gravure printing machine.
  • a gravure blank mold which is provided with a basic screen covering the entire printing area, which is designed for the maximum amount of ink to be transferred.
  • This basic grid is filled with a filling material flush with the webs of the basic grid.
  • the filling material according to the image information from the cells of the basic grid is completely or partially removed with a pixel transfer device.
  • a gravure printing plate ready for printing is obtained from the gravure blank.
  • the object of the invention is thus to further develop a method and a device for imaging an erasable and reusable gravure form of the generic type such that the precision of the ablation with respect to the structuring of the recesses of the basic raster and the expression behavior of the recesses of the basic raster be further improved by a higher uniformity of the bottom of the wells.
  • the basic grid typically 70 to 120 lines (l) / cm, can be selected according to the needs of the printing process, e.g. have different Rasterwinke- to avoid moire or be designed in shape and size so that a good color transfer achieved and the support functions for the doctor blade are optimally met.
  • the image information is placed with a much higher resolution of preferably 300 to 1000 l / cm in a sense over the basic grid.
  • the image information can be displayed in different ways and adapted to the requirements of the respective printed product, without a moire between basic grid and Bereciungsraster is to be feared.
  • the customary angulation of the basic raster to avoid moire between the individual printing inks continues to be used, as is also used in conventional intaglio printing.
  • moire avoidance in the various colors can be used in addition to the angulation with fundamental patterns of different spatial frequencies.
  • the intaglio printing plate is thus subjected to one or more laser beams, which may originate from one or more lasers, and the intensity of the laser beam is modulated in such a way that the filling material is removed in the image areas.
  • several intensity levels can be adjusted so that the amount of the removed filler material and thus the depth of the laser beam engraving of the filling material can be changed.
  • the information density transferable with the laser imager should be between 10 5 units per cm 2 and 10 6 units per cm 2 . This can be achieved in different ways. For example, with high resolution and low number of power levels, a similar information density can be achieved as with low resolution and a higher number of power levels for the laser imager.
  • the diameters (spot diameters) which reach the laser beams used for imaging on the filling material to be removed and thus the addressability of the pixels and the number of intensity levels, i. Engraving depths used to write the image information can be selected to satisfy simple or highest print quality requirements. With the reusable intaglio, there are good experiences with a resolution of 330 l / cm and 16 power levels for the laser, but also finer resolutions are possible.
  • one or more modulated laser beams are directed at the cylindrical intaglio printing plate to be imaged, which thereby rotates while the laser beams are simultaneously moved along the cylinder axis, resulting in helical writing tracks spaced from the reciprocal resolution of the laser beams.
  • the imaging device is designed so that cylinders or sleeves with different diameters and lengths can be imaged.
  • a recording of Tiefticianrohform offers over a pair of support rollers at a distance of the length of Tief réellerohform. While the one supporting the drive pair of rollers is fixed, the distance of the second pair of support rollers to the first can be adapted to the different lengths of Tiefillerrohform.
  • both pairs of support rollers can be adjusted in height so that the imaged laser beams always impinge at the vertex of the intaglio blank to be imaged, or the height position of the focusing optic can be adapted to the respective diameter of the intaglio blank.
  • the driving roller has a friction between this role and the erasable and reusable Tiefpecializingrohform increasing surface and thus ensures that the surface speed of the role exactly the same Surface speed of the erasable and reusable Tiefpecializingrohform is and no slip between them occurs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Printing Methods (AREA)

Abstract

L'objectif de l'invention est d'améliorer davantage la précision de l'ablation par rapport à la structuration des creux d'une trame de base d'une forme en creux et les caractéristiques d'impression des creux de la trame de base d'une forme en creux effaçable et réutilisable grâce à une plus grande uniformité du fond des creux. A cet effet, l'élimination de la substance de remplissage, avec laquelle la trame de base de la forme en creux effaçable et réutilisable est remplie, est effectuée au moyen de faisceaux laser dont le profil d'intensité sur la section transversale du faisceau laser correspond à un profil de type "pilulier".
EP06806601A 2005-11-02 2006-10-28 Procede et dispositif de gravure d'images sur une forme en creux effaçable et reutilisable Withdrawn EP1957272A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005052157A DE102005052157A1 (de) 2005-11-02 2005-11-02 Verfahren und Vorrichtung zur Bebilderung einer löschbaren und wieder verwendbaren Tiefdruckform
PCT/EP2006/010395 WO2007051572A1 (fr) 2005-11-02 2006-10-28 Procede et dispositif de gravure d'images sur une forme en creux effaçable et reutilisable

Publications (1)

Publication Number Publication Date
EP1957272A1 true EP1957272A1 (fr) 2008-08-20

Family

ID=37670676

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06806601A Withdrawn EP1957272A1 (fr) 2005-11-02 2006-10-28 Procede et dispositif de gravure d'images sur une forme en creux effaçable et reutilisable

Country Status (7)

Country Link
US (1) US20090126587A1 (fr)
EP (1) EP1957272A1 (fr)
JP (1) JP2009514696A (fr)
CN (1) CN101300135B (fr)
CA (1) CA2628161C (fr)
DE (1) DE102005052157A1 (fr)
WO (1) WO2007051572A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008035203B4 (de) 2008-07-28 2011-01-27 Leibniz-Institut für Oberflächenmodifizierung e.V. Verfahren zum Löschen und Neubebildern eines Druckzylinders
CN103991270A (zh) * 2014-06-03 2014-08-20 中山火炬职业技术学院 一种基于喷墨保护实现重复利用的凹印版滚筒及印刷方法
CN104875473B (zh) * 2015-05-21 2017-03-22 章健 凹版印刷印版滚筒制版方法及其制版装置
CN112046161A (zh) * 2020-08-31 2020-12-08 安徽天翔高新特种包装材料集团有限公司 一种凹版印刷与uv同步套印工艺

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US3742129A (en) * 1971-07-07 1973-06-26 Harris Intertype Corp Apparatus and method for generating halftones for image reproduction
CH612376A5 (en) * 1976-03-10 1979-07-31 Lasag Ag Apparatus for scribing printing formes using laser beams, and method for operating this apparatus
GB1581551A (en) * 1976-08-24 1980-12-17 Atomic Energy Authority Uk Image reproduction systems
US4566042A (en) * 1979-02-13 1986-01-21 Coulter Systems Corporation Electrophotographic imaging apparatus by variably placing pixel elements
JPS61235151A (ja) * 1985-04-12 1986-10-20 Shinku Lab:Kk レ−ザ−による網グラビア製版法
JP3198540B2 (ja) * 1991-07-19 2001-08-13 ソニー株式会社 半導体レーザ製版装置
US5155599A (en) * 1991-07-25 1992-10-13 Miles, Inc. Screening system and method for color reproduction in offset printing
US5583647A (en) * 1993-05-05 1996-12-10 Ohio Electronic Engravers, Inc. Cylinder support apparatus and method for use in an engraver
JPH07101032A (ja) * 1993-09-30 1995-04-18 Sony Corp レーザ製版装置及び刷版
US5688355A (en) * 1994-10-03 1997-11-18 Xerox Corporation Process for fabricating flexible belts using laser ablation
DE19503951C2 (de) * 1995-02-07 1998-04-09 Roland Man Druckmasch Verfahren und Vorrichtung für den Tiefdruck
JPH0952341A (ja) * 1995-08-16 1997-02-25 Dainippon Screen Mfg Co Ltd グラビア印刷版
JPH0985927A (ja) * 1995-09-25 1997-03-31 Dainippon Screen Mfg Co Ltd グラビア印刷版製造装置およびグラビア印刷版製造方法
US5884013A (en) * 1995-11-17 1999-03-16 Agfa-Gevaert Autotypical screening with optimised dotshape
DE19624441C1 (de) 1996-06-19 1997-12-04 Roland Man Druckmasch Verfahren und Vorrichtung für den Tiefdruck mittels einer löschbaren Tiefdruckform
DE19811031B4 (de) * 1998-03-13 2004-07-29 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung zur Herstellung eines Drucks, insb. eines Proofs, mittels laserinduziertem Thermotransfer
JPH11291438A (ja) * 1998-04-07 1999-10-26 Toppan Printing Co Ltd 凹版印刷版の製作方法及び凹版印刷版
DE19826377A1 (de) * 1998-06-12 1999-12-16 Heidelberger Druckmasch Ag Druckmaschine und Druckverfahren
EP1369230A1 (fr) * 2002-06-05 2003-12-10 Kba-Giori S.A. Procédé de fabrication d'une plaque gravée
JP2004058483A (ja) * 2002-07-30 2004-02-26 Toppan Printing Co Ltd 凹版およびその製造方法
DE202004015497U1 (de) * 2004-02-26 2005-01-13 Koenig & Bauer Ag Tiefdruckform die löschbar und wiederverwendbar ist
US6931991B1 (en) * 2004-03-31 2005-08-23 Matsushita Electric Industrial Co., Ltd. System for and method of manufacturing gravure printing plates

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Also Published As

Publication number Publication date
CN101300135A (zh) 2008-11-05
WO2007051572A1 (fr) 2007-05-10
JP2009514696A (ja) 2009-04-09
CA2628161A1 (fr) 2007-05-10
US20090126587A1 (en) 2009-05-21
DE102005052157A1 (de) 2007-05-03
CN101300135B (zh) 2011-07-06
CA2628161C (fr) 2011-05-17

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