EP1354700B1 - Procédé pour la manipulation de plaques ou cylindres d'impression ré-utilisables dans les machines d'impression - Google Patents

Procédé pour la manipulation de plaques ou cylindres d'impression ré-utilisables dans les machines d'impression Download PDF

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Publication number
EP1354700B1
EP1354700B1 EP03006273A EP03006273A EP1354700B1 EP 1354700 B1 EP1354700 B1 EP 1354700B1 EP 03006273 A EP03006273 A EP 03006273A EP 03006273 A EP03006273 A EP 03006273A EP 1354700 B1 EP1354700 B1 EP 1354700B1
Authority
EP
European Patent Office
Prior art keywords
printing
motifs
printing forme
image
coated
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 - Fee Related
Application number
EP03006273A
Other languages
German (de)
English (en)
Other versions
EP1354700A3 (fr
EP1354700A2 (fr
Inventor
Arndt Jentzsch
Bernd Patzelt
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer 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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1354700A2 publication Critical patent/EP1354700A2/fr
Publication of EP1354700A3 publication Critical patent/EP1354700A3/fr
Application granted granted Critical
Publication of EP1354700B1 publication Critical patent/EP1354700B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/14—Forme preparation for stencil-printing or silk-screen printing
    • B41C1/147—Forme preparation for stencil-printing or silk-screen printing by imagewise deposition of a liquid, e.g. from an ink jet; Chemical perforation by the hardening or solubilizing of the ink impervious coating or sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1008—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials
    • B41C1/1033—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials by laser or spark ablation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1066—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by spraying with powders, by using a nozzle, e.g. an ink jet system, by fusing a previously coated powder, e.g. with a laser

Definitions

  • the invention relates to a method for treating reimageable printing plates or printing forme cylinders in printing presses, wherein the surface of the printing forme / Printing forme cylinder is hydrophilic, on this by means of a jet printer a hydrophobic, imageable layer is applied and then the imaging takes place by means of a Bereciungs adopted or the surface of the printing form / Printing form cylinder is hydrophobic, on this by means of a jet printer a hydrophilic, imageable layer is applied and then by means of a Bereciungs adopted the picture is taken.
  • From DE 100 39 822 A1 is a method for treating reimageable Printing forms or printing forme cylinders known in printing presses, in which to treating surface is applied an imageable coating and this Coating for generating image information by a laser equipped Becularungs favorable is energized.
  • this ablatable coating is applied with a jet printer.
  • the document DE 43 39 493 A1 discloses a method for producing a printing form proposed by a hydrophilic plate surface emanates.
  • Data is provided which is one to a carrier Define a printing graphic and / or a text.
  • the data is in a computer converted into machine data suitable for the operation of a machine.
  • the selected portions of the plate surface containing an image-forming material to be coated are defined.
  • a jet printing device with a Beam printhead provided on the selected portions of the disk surface applying the image-forming material and the other portions of the plate surface leaves free.
  • the jet printing device is a supply of photosensitive, liquid imaging material used to create hydrophobic areas is curable on the plate surface. Thereafter, the imaging material is included Radiation energy exposed to produce a hardened image.
  • the object of the invention is a method for treating reimageable To develop printing plates or printing forme cylinders in printing presses, by maintaining a minimum of coating material while maintaining high quality criteria is consumed and almost no combustion residues are generated.
  • the invention has the advantage that the energy consumption in an optimal range brought and a significant amount of material is saved. Furthermore, both Time saved when applying the coating material as well as during imaging.
  • FIG. 1 shows a printing unit 1 of a multicolour sheet-fed rotary printing press.
  • Each printing unit 1 contains, as a sheet-guiding cylinder, a printing cylinder 2 and a transfer cylinder 3 and, as a printing image transfer cylinder, a printing form cylinder 4 and a blanket cylinder 5 .
  • Each printing form cylinder 4 is assigned an inking unit 6 and a dampening unit 7 .
  • the printing form cylinder 4 is a designed as an inkjet printer coating device 8, a Becularungs favorable 9 and possibly a developer unit 10 assigned.
  • the imaging device 9 for imaging the printing form cylinder 4 is embodied as a laser-based ablation device.
  • a medium is applied to the surface of the printing form cylinder 4 by the coating device 8 or, if this is done with a printing plate 12 , this medium is applied to the surface of the printing plate 12 . As a result, a layer 11 is formed. This is applied by a jet printer, which works according to the ink-jet principle.
  • motifs 13, 14 are assigned. This applies to both image motifs 13 and text motifs 14. In this case, the position and the areas occupied by the motifs 13, 14 are determined on the basis of the scanned print originals or from the precursor data.
  • the areas occupied by the motifs 13, 14 become including its edge regions 16 coated.
  • Under edge area 16 is the Understood area that encloses the motifs 13, 14 on all sides. In any case, the Size of the border area chosen so that sufficient for the subsequent imaging Ablatierbares material is available.
  • the applied layer 11 can now, depending on the printing process, have hydrophobic or hydrophilic properties.
  • the layer 11 is hydrophobic and the surface of the printing form cylinder 4 or the printing plate 12 is hydrophilic.
  • a color or a color-like product can be used.
  • the areas to which the motifs 13, 14 are assigned are determined. Once this can be done during the current print job, so that these values are introduced into the current printing process.
  • data may be used that has been determined from the scanned print templates or from the prepress data before the start of the print process. The imageable layer is then applied so that only these areas, including a minimum edge area 16 beyond the motifs 13, 14 , are coated.
  • the medium is hydrophilic and the surface of the printing form cylinder 4 and the printing plate 12 is hydrophobic.
  • the areas are determined to which no motifs 13, 14 are assigned.
  • the imageable layer is applied so that only these areas, including a minimum edge area 16 entering the motifs 13, 14 , are coated.
  • the medium for the layer 11 is usually self-curing. If the curing of the medium is not possible automatically, the curing can take place parallel to the coating via UV light (polymerization) or via laser beam drying and baking.
  • the printing form cylinder 4 or the printing form 12 prepared after application of the medium can now be imaged by the imaging device 9 .
  • the imaging device 9 is a laser-based imagesetter.
  • data for the printing process are processed in a generally known manner in a computer, not shown, and fed to the device for printing plate cylinder imaging.
  • the rotational speed of the plate cylinder 4 is synchronized with the line-controlled speed of the imaging device 9 .
  • the motif-forming areas are made hydrophobic, the material is ablated in the areas that are not covered with motifs 13, 14 . This means that the material of the edge region 16 is completely removed. If the motif-forming regions are made hydrophilic, the material is ablated in the regions which are covered with the motifs 13, 14 . The edge region 16, which extends into the motifs 13, 14, is removed.
  • the imaging is optionally followed by a development process in order to fix the image information on the surface of the plate cylinder 4 or the printing plate 12 .

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Sciences (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Methods (AREA)

Claims (6)

  1. Procédé de traitement de matrices d'impression ou de cylindres de matrices d'impression que l'on peut à nouveau illustrer dans des machines d'impression, la surface de la matrice d'impression (12)/du cylindre de matrice d'impression (4) étant hydrophile, une couche hydrophobe que l'on peut illustrer y étant appliquée au moyen d'une imprimante à jet (8) et l'illustration s'effectuant ensuite au moyen d'un dispositif d'illustration (9),
    caractérisé en ce qu'
    on détermine les zones de la surface de la matrice d'impression (12)/du cylindre de matrice d'impression (4) auxquelles des motifs (13, 14) sont associés et on n'applique la couche que l'on peut illustrer que sur ces zones, y compris une zone périphérique (16) minimale dépassant des motifs (13, 14).
  2. Procédé de traitement de matrices d'impression ou de cylindres de matrices d'impression que l'on peut à nouveau illustrer dans des machines d'impression, la surface de la matrice d'impression (12)/du cylindre de matrice d'impression (4) étant hydrophobe, une couche hydrophile que l'on peut illustrer y étant appliquée au moyen d'une imprimante à jet (8) et l'illustration s'effectuant ensuite au moyen d'un dispositif d'illustration (9),
    caractérisé en ce qu'
    on détermine les zones de la surface de la matrice d'impression (12)/du cylindre de matrice d'impression (4) auxquelles des motifs (13, 14) sont associés et on n'applique la couche que l'on peut illustrer que sur ces zones, y compris une zone périphérique (16) minimale entrant dans les motifs (13, 14).
  3. Procédé selon les revendications 1 ou 2,
    caractérisé en ce que
    la zone périphérique (16) est choisie de manière à entourer le motif (13, 14) correspondant de tous les côtés.
  4. Procédé selon les revendications 1 ou 2,
    caractérisé en ce qu'
    on choisit la dimension de la zone périphérique de manière à disposer de suffisamment de matériau que l'on peut enlever pour l'illustration suivante.
  5. Procédé selon les revendications 1 ou 2,
    caractérisé en ce que
    les zones pourvues des motifs (13, 14) dépendantes du processus d'impression sont déterminées à l'aide des données d'étapes antérieures ou de la maquette scannée.
  6. Procédé selon les revendications 1 ou 2,
    caractérisé en ce que
    le dispositif d'illustration (9) est un photoconducteur au laser.
EP03006273A 2002-04-18 2003-03-21 Procédé pour la manipulation de plaques ou cylindres d'impression ré-utilisables dans les machines d'impression Expired - Fee Related EP1354700B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10217172A DE10217172A1 (de) 2002-04-18 2002-04-18 Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen
DE10217172 2002-04-18

Publications (3)

Publication Number Publication Date
EP1354700A2 EP1354700A2 (fr) 2003-10-22
EP1354700A3 EP1354700A3 (fr) 2004-07-28
EP1354700B1 true EP1354700B1 (fr) 2005-08-24

Family

ID=28458897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03006273A Expired - Fee Related EP1354700B1 (fr) 2002-04-18 2003-03-21 Procédé pour la manipulation de plaques ou cylindres d'impression ré-utilisables dans les machines d'impression

Country Status (2)

Country Link
EP (1) EP1354700B1 (fr)
DE (2) DE10217172A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005046242A1 (de) 2005-09-28 2007-03-29 Man Roland Druckmaschinen Ag Verfahren zum Bebildern von Druckformen
DE102007005815A1 (de) * 2007-02-06 2008-08-07 Maschinenfabrik Wifag Bebilderung einer Offset-Druckform
DE102011109083A1 (de) 2011-08-01 2013-02-07 Heidelberger Druckmaschinen Aktiengesellschaft Inkjet-Laserhärtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833486A (en) * 1987-07-08 1989-05-23 Dataproducts Corporation Ink jet image transfer lithographic
GB2272866A (en) * 1992-11-20 1994-06-01 Gerber Scient Products Inc Non-photographic production of planographic printing plates.
US6196129B1 (en) * 1996-05-14 2001-03-06 New England Sciences & Specialty Products, Inc. Wet lithographic printing plates
DE10039822A1 (de) * 2000-08-09 2002-02-21 Koenig & Bauer Ag Verfahren und Einrichtung zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen
JP2002059527A (ja) * 2000-08-22 2002-02-26 Mitsubishi Heavy Ind Ltd 機上製版印刷機及び印刷版修正装置並びに印刷版修正方法
DE60101663T2 (de) * 2001-03-22 2004-12-23 Agfa-Gevaert Tintenstrahlbeschichtungsverfahren für eine Bildaufzeichnungsschicht

Also Published As

Publication number Publication date
DE10217172A1 (de) 2003-10-30
DE50301024D1 (de) 2005-09-29
EP1354700A3 (fr) 2004-07-28
EP1354700A2 (fr) 2003-10-22

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