EP1354700B1 - Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen - Google Patents
Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen Download PDFInfo
- 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
Links
Images
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)
Description
- Figur 1
- Schematische Darstellung eines Druckwerks einer Bogenoffsetdruckmaschine mit einer nach dem erfindungsgemäßen Verfahren arbeitenden Einrichtung
- Figur 2
- Stark vereinfachte Darstellung der Oberfläche einer Druckform oder der Oberfläche eines Druckformzylinders mit einer Beschichtung nach dem erfindungsgemäßen Verfahren
- 1
- Druckwerk
- 2
- Druckzylinder
- 3
- Übergabezylinder
- 4
- Druckformzylinder
- 5
- Gummizylinder
- 6
- Farbwerk
- 7
- Feuchtwerk
- 8
- Strahldrucker
- 9
- Bebilderungseinrichtung
- 10
- Entwickler-Einheit
- 11
- Schicht
- 12
- Druckform
- 13
- Bildmotiv
- 14
- Textmotiv
- 15
- mit Motiven belegte Bereiche
- 16
- Randbereich der Motive
Claims (6)
- Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen, wobei die Oberfläche der Druckform (12)/des Druckformzylinders (4) hydrophil ist, auf diese durch einen Strahldrucker (8) eine hydrophobe, bebilderbare Schicht aufgebracht wird und anschließend das Bebildern mittels einer Bebilderungseinrichtung (9) erfolgt,
dadurch gekennzeichnet, dass
die Bereiche der Oberfläche der Druckform (12)/des Druckformzylinders (4), denen Motive (13, 14) zugeordnet sind, ermittelt werden und die bebilderbare Schicht so aufgetragen wird, dass nur diese Bereiche einschließlich eines über die Motive (13, 14) hinausgehenden minimalen Randbereichs (16) beschichtet werden. - Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckfomzylindern in Druckmaschinen, wobei die Oberfläche der Druckform (12)/des Druckformzylinders (4) hydrophob ist, auf diese mittels eines Strahldruckers (9) eine hydrophile, bebilderbare Schicht aufgebracht wird und anschließend mittels einer Bebilderungseinrichtung (9) das Bebildern erfolgt,
dadurch gekennzeichnet, dass
die Bereiche der Oberfläche der Druckform (12)/des Druckformzylinders (4), denen keine Motive (13, 14) zugeordnet sind, ermittelt werden und die bebilderbare Schicht so aufgetragen wird, dass nur diese Bereiche einschließlich eines in die Motive (13, 14) hineingehenden minimalen Randbereichs (16) beschichtet werden. - Verfahren nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass der Randbereich (16) so gewählt wird, dass dieser das entsprechende Motiv (13, 14) allseitig umschließt.
- Verfahren nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass die Größe des Randbereichs (16) so gewählt wird, dass bei der Bebilderung ausreichend ablatierbares Material zur Verfügung steht
- Verfahren nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass die Ermittlung der druckauftragsbezogenen, von den Motiven (13, 14) belegten Bereiche aus Vorstufendaten oder an Hand der gescannten Druckvorlage erfolgt.
- Verfahren nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass die Bebilderungseinrichtung (9) ein Belichter auf Laserbasis ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10217172 | 2002-04-18 | ||
DE10217172A DE10217172A1 (de) | 2002-04-18 | 2002-04-18 | Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1354700A2 EP1354700A2 (de) | 2003-10-22 |
EP1354700A3 EP1354700A3 (de) | 2004-07-28 |
EP1354700B1 true EP1354700B1 (de) | 2005-08-24 |
Family
ID=28458897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03006273A Expired - Fee Related EP1354700B1 (de) | 2002-04-18 | 2003-03-21 | Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1354700B1 (de) |
DE (2) | DE10217172A1 (de) |
Families Citing this family (3)
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)
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 |
EP1243411B1 (de) * | 2001-03-22 | 2004-01-02 | Agfa-Gevaert | Tintenstrahlbeschichtungsverfahren für eine Bildaufzeichnungsschicht |
-
2002
- 2002-04-18 DE DE10217172A patent/DE10217172A1/de not_active Withdrawn
-
2003
- 2003-03-21 DE DE50301024T patent/DE50301024D1/de not_active Expired - Lifetime
- 2003-03-21 EP EP03006273A patent/EP1354700B1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE50301024D1 (de) | 2005-09-29 |
DE10217172A1 (de) | 2003-10-30 |
EP1354700A2 (de) | 2003-10-22 |
EP1354700A3 (de) | 2004-07-28 |
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