EP1225040B1 - Procédé de formation d'image dans des presses - Google Patents

Procédé de formation d'image dans des presses Download PDF

Info

Publication number
EP1225040B1
EP1225040B1 EP01128385A EP01128385A EP1225040B1 EP 1225040 B1 EP1225040 B1 EP 1225040B1 EP 01128385 A EP01128385 A EP 01128385A EP 01128385 A EP01128385 A EP 01128385A EP 1225040 B1 EP1225040 B1 EP 1225040B1
Authority
EP
European Patent Office
Prior art keywords
hydrophilic
adhesive agent
printing machines
hydrophobic
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.)
Expired - Lifetime
Application number
EP01128385A
Other languages
German (de)
English (en)
Other versions
EP1225040A2 (fr
EP1225040A3 (fr
Inventor
Arndt Jentzsch
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 EP1225040A2 publication Critical patent/EP1225040A2/fr
Publication of EP1225040A3 publication Critical patent/EP1225040A3/fr
Application granted granted Critical
Publication of EP1225040B1 publication Critical patent/EP1225040B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B41C1/10—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 imaging of surfaces in printing machines, wherein the surface to be imaged consists of a hydrophilic material or provided with a hydrophilic coating surface to be imaged and hydrophobic material is applied to this hydrophilic surface at the motif-forming points by means of a jet printer.
  • a method for producing a printing plate which starts from a hydrophilic plate surface.
  • Data is provided which defines a graphic and / or text to be printed on a support.
  • the data is converted in a computer into machine data suitable for the operation of a machine.
  • the selected portions of the plate surface to be coated with an image-forming material are defined.
  • a jet printer is provided with a jet print head which applies the image forming material to the selected portions of the disk surface and leaves free the other portions of the disk surface.
  • the jet printing device provides a supply of photosensitive liquid imaging material which is curable to create hydrophobic areas on the plate surface. Thereafter, the imaging material is exposed to radiant energy to produce a cured image.
  • the plate is roughened. This is done here by a granulating device.
  • the application of the method according to the invention has the advantage that now the motivating points can form sharp edges and a running into each other of the coatings is excluded. It is irrelevant whether the hydrophobic material of the motif-forming elements is applied to the hydrophilic coating or the motif-forming sites are created by covering the hydrophobic surface with hydrophilic material.
  • the first embodiment is based on a conventional plate cylinder whose surface is provided with a hydrophilic surface.
  • this plate cylinder is provided with a pressure plate having a hydrophilic coating. It is also possible to provide the plate cylinder or the pressure plate only with such a coating in an upstream processing step.
  • An adhesion promoter is applied to the hydrophilic surface at the motif-forming points by an ink-jet printer.
  • a wetting agent customary in the printing industry is admixed.
  • the bonding agent has a fine-porous structure. This structure is selectively produced by adding a foaming agent in the required amount. By this foaming agent not only the finely porous structure is formed, but in particular also profiled an open-pored surface.
  • This open-pore surface forms the primer for the immediately after the application of the primer imaging takes place.
  • the imaging is done by the motivating, provided with the primer sites are occupied by a hydrophobic material.
  • the open porosity of the adhesion promoter not only increases the adhesion of the hydrophobic material, but also keeps it in the open pores of the surface and prevents its bleeding. Thus, the edges of the motivating bodies appear sharp-edged.
  • this plate cylinder is provided with a pressure plate having a hydrophobic coating. It is also possible to provide the plate cylinder or the pressure plate only with such a coating in an upstream processing step.
  • An adhesion promoter is applied to the hydrophobic surface at the non-motivating points by an inkjet printer.
  • This adhesion promoter has analogous properties to the adhesion promoter described in the first exemplary embodiment and thus adheres well to the hydrophobic surface.
  • hydrophilic material is applied to the open-pored surface of the adhesion promoter to produce the non-motif-forming elements. Due to the property of the primer, this material is well fixed on the surface and forms sharp transitions.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Ink Jet (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (6)

  1. Procédé d'illustration de surfaces dans des machines rotatives d'impression offset selon lesquelles :
    - la surface à illustrer est une matière hydrophile ou est munie d'un revêtement hydrophile et pour illustrer cette surface hydrophile une imprimante à jet applique de la matière hydrophobe aux endroits constituant le motif, ou,
    - la surface à illustrer se compose d'une matière hydrophobe ou est munie d'un revêtement hydrophobe et on illustre cette surface hydrophobe en appliquant aux endroits qui ne constituent pas le motif, une matière hydrophile à l'aide d'une imprimante à jet,
    caractérisé en ce que
    - exclusivement aux endroits constituant des motifs, directement avant d'appliquer la matière hydrophobe sur ces endroits, on applique un agent d'adhésif sur la surface hydrophile ou,
    - exclusivement aux endroits qui ne constituent pas des motifs d'image, on applique un agent adhésif sur la surface hydrophobe avant d'appliquer la matière hydrophile.
  2. Procédé d'illustration de surface dans des machines d'impression selon la revendication 1,
    caractérisé en ce que
    l'agent adhésif est appliqué par une imprimante à jet.
  3. Procédé d'illustration de surface dans des machines d'impression selon la revendication 1,
    caractérisé en ce que
    l'application de l'agent adhésif se fait directement avant d'appliquer la matière hydrophile ou hydrophobe.
  4. Procédé d'illustration de surface dans des machines d'impression selon la revendication 1,
    caractérisé en ce que
    l'agent adhésif contient un agent de réticulation.
  5. Procédé d'illustration de surface dans des machines d'impression selon la revendication 1,
    caractérisé en ce que
    l'agent adhésif a une structure à porosité fine, la surface de l'agent adhésif appliqué étant à pores filaires.
  6. Procédé d'illustration de surface dans des machines d'impression selon la revendication 1,
    caractérisé en ce qu'
    un agent moussant est mélangé à l'agent adhésif.
EP01128385A 2001-01-20 2001-12-03 Procédé de formation d'image dans des presses Expired - Lifetime EP1225040B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10102562 2001-01-20
DE10102562A DE10102562A1 (de) 2001-01-20 2001-01-20 Verfahren zum Bebildern von Oberflächen in Druckmaschinen

Publications (3)

Publication Number Publication Date
EP1225040A2 EP1225040A2 (fr) 2002-07-24
EP1225040A3 EP1225040A3 (fr) 2004-01-02
EP1225040B1 true EP1225040B1 (fr) 2006-06-28

Family

ID=7671233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01128385A Expired - Lifetime EP1225040B1 (fr) 2001-01-20 2001-12-03 Procédé de formation d'image dans des presses

Country Status (3)

Country Link
EP (1) EP1225040B1 (fr)
AT (1) ATE331618T1 (fr)
DE (2) DE10102562A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008035052A1 (de) * 2008-07-26 2010-01-28 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Bearbeitung eines Bauteils, insbesondere eines Außenhautteils eines Fahrzeugs

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL106899A (en) * 1993-09-03 1995-08-31 Adler Uri Method and apparatus for the production of photopolymeric printing plates
GB2344069B (en) * 1998-07-27 2002-05-15 Eastman Kodak Co Imaging and printing methods to form fingerprint protected imaging member
US6341560B1 (en) * 1999-02-04 2002-01-29 Kodak Polychrome Graphics Llc Imaging and printing methods using clay-containing fluid receiving element
US6276273B1 (en) * 1999-06-11 2001-08-21 Kodak Polychrome Graphics Llc Surfactant-pretreated printing plate substrate, lithographic printing plate and method for production thereof

Also Published As

Publication number Publication date
EP1225040A2 (fr) 2002-07-24
ATE331618T1 (de) 2006-07-15
DE50110329D1 (de) 2006-08-10
EP1225040A3 (fr) 2004-01-02
DE10102562A1 (de) 2002-07-25

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