EP1179425B1 - 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
- EP1179425B1 EP1179425B1 EP01115575A EP01115575A EP1179425B1 EP 1179425 B1 EP1179425 B1 EP 1179425B1 EP 01115575 A EP01115575 A EP 01115575A EP 01115575 A EP01115575 A EP 01115575A EP 1179425 B1 EP1179425 B1 EP 1179425B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- laser
- coating
- cylinder
- treating
- 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
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
- B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
-
- 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
Definitions
- the invention relates to a method for treating reimageable printing plates or printing forme cylinders in printing machines, wherein on the surface to be treated a imageable coating is applied.
- the invention further relates to a device for carrying out the method, consisting from an imaging device with a laser, which is assigned to a laser head,
- the regeneration of the printing plate includes the Removal of the imaging on the printing form and hydrophilization of the surface of the Printing form. According to this document, the regeneration takes place in that on the Printing form applied an ionized process gas by means of a loading device with a reactive deletion of the imaging and the simultaneous hydrophilization in a process step is made. The resulting volatile reaction products are removed by a suction device.
- a disadvantage of this regeneration device is the high technical complexity required for the Regeneration of the printing plates must be operated.
- the invention has the advantage that now the process of removing the image information in a much shorter time.
- FIG. 1 shows a printing unit 1 of a multicolour sheet-fed rotary printing press.
- the printing unit 1 contains, as a sheet-guiding cylinder, a printing cylinder 2 and a transfer cylinder 3 and as a print image transferring cylinder a printing form cylinder 4 and a Rubber cylinder 5.
- Each printing form cylinder 4 is assigned an inking unit 6 and a dampening unit 7. On the Printing form cylinder 4 can also be clamped (not shown here printing plate).
- the printing form cylinder 4 is a (not shown) mounted in the frame imaging device 8 assigned.
- This consists of a laser head 12, in which a laser 9 integrated is.
- the power of the laser 9 is controllable. It can be both solid state lasers and Gas discharge laser can be applied.
- the prepared after application of the medium printing form cylinder 4 can now be imaged by the imaging device 8.
- the printing process is completed.
- the artwork will be taken of the printing form cylinder 4 deleted. This is also done by the imaging device 8, which then works as an ablation device and the coating 11 detaches from the surface of the plate cylinder or from the printing plate.
- the intensity of the laser beam of the imaging device 8 increases and thus increased the effect on the surface to be treated.
- the happens according to the invention by increasing the power of the laser 9 by the electrical operating parameters are changed.
- An advantageous embodiment of the invention is the diameter of the laser beam to increase by changing the focus.
- the reliability of the Image resolution can be increased.
- the imaging of the applied coating 11 and the image removal take place with rotating It is advantageous to the printing form cylinder 4 when Imaging Disconnect from the drive and delete.
- the printing forme cylinder has in this case for the Imaging and image removal a separate drive.
- FIG. 2 shows a further exemplary embodiment of the invention.
- the construction of the Printing unit 1 is analogous to the embodiment shown above.
- the imaging device also consists of a laser head 12, which is associated with a laser 9.
- the laser 9 is connected via a light guide cable with a second laser 10.
- several lasers are assigned via fiber optic cable 14.
- the coating and the imaging are carried out analogously to the above-mentioned embodiment.
- To detach the coating is in the laser head 12 via the optical fiber 14th the light of the second laser 10 or further laser supplied and thus the intensity of the Increased effect on the surface to be treated.
- FIG. 2 shows a further exemplary embodiment of the invention.
- the construction of the Printing unit 1 is analogous to the embodiment shown above.
- the imaging device also consists of a laser head 12, which is associated with a laser 9.
- the coating and the imaging are carried out analogously to the above-mentioned embodiment.
- the light beam of the second laser 10 'over the mirror system 13 is supplied to the laser head 12 so that the intensity of the effect is enhanced and the coating can be peeled off within a very short time.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
- Printing Plates And Materials Therefor (AREA)
- Printing Methods (AREA)
- Dot-Matrix Printers And Others (AREA)
- Laser Beam Processing (AREA)
Description
- Figur 1:
- Schematische Darstellung eines Druckwerkes mit einem Laserkopf zum Übertragen und Löschen der Bildinformation
- Figur 2:
- Schematische Darstellung eines Druckwerkes mit einem Laserkopf zum Übertragen und Löschen der Bildinformation und einem per Lichtleitkabel verbundenen zusätzlichen Laser
- Figur 3:
- Schematische Darstellung eines Druckwerkes mit einem Laserkopf zum Übertragen und Löschen der Bildinformation und einem über ein Spiegelsystem angekoppelten zusätzlichen Laser
- 1
- Druckwerk
- 2
- Druckzylinder
- 3
- Übergabezylinder
- 4
- Druckformzylinder
- 5
- Gummizylinder
- 6
- Farbwerk
- 7
- Feuchtwerk
- 8
- Bebilderungseinrichtung
- 9
- Laser
- 10; 10'
- zweiter Laser
- 11
- Schicht
- 12
- Laserkopf
- 13
- Spiegel-System
- 14
- Lichtleitkabel
Claims (5)
- Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen, wobeiauf die zu behandelnde Oberfläche eine bebilderbare Beschichtung (11) aufgebracht,diese Beschichtung (11) zum Erzeugen einer Bildinformation durch eine mit einem Laser (9) ausgestattete Bebilderungseinrichtung (8) mit Energie beaufschlagt,mit der bebilderten Druckform der Druckvorgang eingeleitet undnach erfolgtem Druck die Bebilderung vom Druckformzylinder gelöscht wird, wobeidie Bebilderungseinrichtung (8) auch zum Entfernen der Beschichtung (11) verwendet wird, indembeim Entfernen der Beschichtung durch die Bebilderungseinrichtung (8) die Intensität des Lasers bei der Einwirkung auf die zu behandelnde Oberfläche erhöht wird.
- Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen nach Anspruch 1, dadurch gekennzeichnet, dass bei der Bebilderung durch den Energieeintrag in die Beschichtung (11) die bildtragenden Elemente polymerisiert werden.
- Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen nach Anspruch 1, dadurch gekennzeichnet, dass zur Leistungsverstärkung der Bebilderungseinrichtung (8) beim Ablösen der Beschichtung (11) die Leistung des Lasers auf das erforderliche Maß erhöht wird.
- Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen nach Anspruch 1, dadurch gekennzeichnet, dass zur Leistungsverstärkung der Bebilderungseinrichtung (8) beim Ablösen der Beschichtung (11) mindestens ein weiterer Laser (10, 10') zugeschaltet wird.
- Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, dass der Durchmesser des Laser-Strahles beim Löschvorgang vergrößert wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10039822 | 2000-08-09 | ||
DE10039822A DE10039822A1 (de) | 2000-08-09 | 2000-08-09 | Verfahren und Einrichtung zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1179425A2 EP1179425A2 (de) | 2002-02-13 |
EP1179425A3 EP1179425A3 (de) | 2003-09-03 |
EP1179425B1 true EP1179425B1 (de) | 2005-08-24 |
Family
ID=7652481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01115575A Expired - Lifetime EP1179425B1 (de) | 2000-08-09 | 2001-06-28 | Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen |
Country Status (4)
Country | Link |
---|---|
US (1) | US20020066383A1 (de) |
EP (1) | EP1179425B1 (de) |
AT (1) | ATE302695T1 (de) |
DE (2) | DE10039822A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6820552B2 (en) * | 2001-02-14 | 2004-11-23 | Agfa-Gevaert | Cleaning method for recycling a printing substrate by laser ablation |
DE10217172A1 (de) | 2002-04-18 | 2003-10-30 | Koenig & Bauer Ag | Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen |
DE102007005815A1 (de) * | 2007-02-06 | 2008-08-07 | Maschinenfabrik Wifag | Bebilderung einer Offset-Druckform |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3654864A (en) * | 1970-01-16 | 1972-04-11 | Energy Conversion Devices Inc | Printing employing materials with variable volume |
DE4342954C2 (de) * | 1993-12-16 | 1998-01-22 | Roland Man Druckmasch | Verfahren zum Herstellen und Löschen einer löschbaren Hochdruckform, Vorrichtung zur Durchführung des Verfahrens und deren Verwendung |
IL116885A0 (en) * | 1996-01-24 | 1996-05-14 | Scitex Corp Ltd | An imaging apparatus for exposing a printing member |
DE69805385T2 (de) * | 1997-10-24 | 2002-09-12 | Fuji Photo Film Co., Ltd. | Vorrichtung zur Herstellung einer Druckplatte und Drucker und Drucksystem die diese Vorrichtung verwenden |
US6072511A (en) * | 1997-12-12 | 2000-06-06 | Presstek, Inc. | Method and apparatus for diode-laser imaging with compensation for output variations |
JP3739962B2 (ja) * | 1998-05-18 | 2006-01-25 | 富士写真フイルム株式会社 | 平版印刷版用原版、これを用いた平版印刷版の製版方法および平版印刷版用原版の製造方法 |
-
2000
- 2000-08-09 DE DE10039822A patent/DE10039822A1/de not_active Withdrawn
-
2001
- 2001-06-28 AT AT01115575T patent/ATE302695T1/de not_active IP Right Cessation
- 2001-06-28 DE DE50107181T patent/DE50107181D1/de not_active Expired - Lifetime
- 2001-06-28 EP EP01115575A patent/EP1179425B1/de not_active Expired - Lifetime
- 2001-08-07 US US09/924,159 patent/US20020066383A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP1179425A2 (de) | 2002-02-13 |
DE50107181D1 (de) | 2005-09-29 |
EP1179425A3 (de) | 2003-09-03 |
ATE302695T1 (de) | 2005-09-15 |
DE10039822A1 (de) | 2002-02-21 |
US20020066383A1 (en) | 2002-06-06 |
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