EP1155871B1 - Procédé pour le traitement de plaques d'impression réutilisables ou de cylindres dans les presses - Google Patents

Procédé pour le traitement de plaques d'impression réutilisables ou de cylindres dans les presses Download PDF

Info

Publication number
EP1155871B1
EP1155871B1 EP01111023A EP01111023A EP1155871B1 EP 1155871 B1 EP1155871 B1 EP 1155871B1 EP 01111023 A EP01111023 A EP 01111023A EP 01111023 A EP01111023 A EP 01111023A EP 1155871 B1 EP1155871 B1 EP 1155871B1
Authority
EP
European Patent Office
Prior art keywords
printing
layer
cylinders
treating
image information
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
EP01111023A
Other languages
German (de)
English (en)
Other versions
EP1155871A3 (fr
EP1155871A2 (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 EP1155871A2 publication Critical patent/EP1155871A2/fr
Publication of EP1155871A3 publication Critical patent/EP1155871A3/fr
Application granted granted Critical
Publication of EP1155871B1 publication Critical patent/EP1155871B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a method for treating reimageable printing forms or printing form cylinders in printing presses, wherein on the surface to be treated imageable layer applied and this layer with an imaging device an image information is applied to create printing and non-printing locations.
  • the device for printing plate imaging optionally contains an integrated curing device and a detachment device.
  • the curing of the applied on the pressure plate Medium is done by UV curing or radiation curing.
  • About the function of the Detachment device are not specified.
  • a method for regenerating a is preferred previously known directly illustrated printing form suitable for offset printing.
  • the regeneration the printing plate includes the removal of the images on the printing form and a hydrophilization of the surface of the printing form.
  • the Regeneration by applying an ionized process gas to the printing form by means of an application device is applied, with a reactive deletion of the images and the simultaneous hydrophilization is carried out in one process step.
  • the one there Volatile reaction products are removed by a suction device.
  • the invention has the advantage that the method according to the invention additionally Extinguishing devices are no longer required.
  • the device works reliably and energy-saving.
  • the accompanying drawing shows a printing unit 1 of a multi-color sheet-fed offset printing machine.
  • Each printing unit 1 contains a printing cylinder as a sheet-guiding cylinder 2 and a transfer cylinder 3 and a printing form cylinder as the image transfer cylinder 4 and a rubber cylinder 5.
  • An inking unit 6 and a dampening unit 7 are assigned to each printing form cylinder 4.
  • On the Printing form cylinder 4 can also be a printing form (not shown here).
  • the printing form cylinder 4 is also a chamber doctor blade / anilox roller combination executed coating device 8, an imaging device 9 and possibly a developer unit 10 assigned.
  • the imaging device 9 for imaging the printing form cylinder 4 is designed as a laser-based ablation device.
  • the applied layer 11 can now, depending on the printing process, ink-guiding or ink-repellent Have properties.
  • layer 11 is color-friendly and that Surface of the printing form cylinder 4 is dampening agent friendly.
  • a color or a color-like product can be used.
  • the medium is dampening agent friendly and the printing form cylinder 4 is color friendly.
  • the medium for layer 11 is usually self-curing. Is the hardening of the medium not automatically possible, curing with UV light can take place parallel to the coating (Polymerization) or via laser beam drying and baking. After a another variant, it is also possible to heat the medium onto the printing form cylinder 4 to apply and to achieve the solidification by cooling.
  • the printing form cylinder 4 prepared after the application of the medium can now be imaged by the imaging device 9.
  • data for the printing process are generally known manner processed and the device for printing cylinder imaging fed.
  • the speed of rotation of the printing form cylinder 4 is controlled by the line Speed of the imaging device 9 synchronized.
  • the surface of the layer is loaded with image information, so that there are printing and non-printing areas.
  • the Layer 11 is color-friendly or dampening agent-friendly, leads to the ablation of layer 11 printing or non-printing points on the surface of the printing form cylinder 4.
  • the imaging may be followed by a development process to open up the image information to fix the surface of the printing form cylinder 4 or the printing plate.
  • the printing process is then carried out. This can be done in a conventional manner Ink and water or in dry offset are done using the Toray process.
  • the imaging of the printing form cylinder 4 is removed. This happens also by means of a laser-based ablation device, preferably those for the Imaging device 9 used is used.
  • the Layer 11 according to the invention with the image formation inverted with respect to the imaging pressurized so that - depending on the printing process - the printing or non-printing Make the layer 11 eliminated.
  • An advantageous embodiment of the invention is the diameter of the laser beam to transmit the inverted image information. This can increase reliability the image separation can be enlarged.
  • the The diameter of the laser beam is retained, but the dot matrix of the inverted image information is specifically overcrowded, i.e. the number of points is increased.
  • the imaging, the hardening of the applied layer 11, the development and the image detachment should preferably be done with the printing plate cylinder 4 rotating. That is what Printing form cylinder 4 can be uncoupled from the drive and has for imaging and image detachment its own drive.
  • the method described above is not limited to offset printing.
  • the layer 11 is, as it were, in the form of a sleeve or a polymer plate.
  • the Image information is applied analogously to the imaging device 9 as described above.
  • the detachment or deletion process is also carried out with the inverted image information carried out, which then equalizes the surface of the sleeve or the polymer plate becomes.

Landscapes

  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Methods (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Paper (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

Claims (7)

  1. Procédé pour le traitement de plaques d'impression réutilisables ou de cylindres dans les presses, selon lequel une couche (11) dessinable est appliquée sur la surface à traiter et cette couche (11) est frappée d'une information d'image par un dispositif d formateur de dessins (9) afin de créer des espaces imprimables et non imprimables,
    caractérisé en ce que
    pour décoller la couche (11) ou pour égaliser la surface, celle-ci est frappée d'une information d'image invertie par un dispositif formateur de dessins (9).
  2. Procédé pour le traitement de plaques d'impression réutilisables ou de cylindres selon la revendication 1,
    caractérisé en ce que
    le dispositif formateur de dessins (9) permettant de former des dessins sur la couche (11) est identique à celui servant à décoller ou à égaliser la couche (11).
  3. Procédé pour le traitement de plaques d'impression réutilisables ou de cylindres selon les revendications 1 et 2,
    caractérisé en ce que
    le dispositif formateur de dessins (9) est conçu en tant que dispositif d'ablation sur un support laser.
  4. Procédé pour le traitement de plaques d'impression réutilisables ou de cylindres selon la revendication 1,
    caractérisé en ce que
    l'information d'image conduit à la création d'espaces imprimables disposés à la surface de la plaque d'impression ou du cylindre (4).
  5. Procédé pour le traitement de plaques d'impression réutilisables ou de cylindres selon la revendication 1,
    caractérisé en ce que
    l'information d'image conduit à la création d'espaces non imprimables disposés à la surface de la plaque d'impression ou du cylindre (4).
  6. Procédé pour le traitement de plaques d'impression réutilisables ou de cylindres selon les revendications 1 ou 2 ?
    caractérisé en ce que
    le diamètre du faisceau laser augmente lorsque l'information d'image est invertie.
  7. Procédé pour le traitement de plaques d'impression réutilisables ou de cylindres selon les revendications 1 et 2,
    caractérisé en ce que
    la matrice de points de l'information d'image invertie est surchargée de manière ciblée.
EP01111023A 2000-05-15 2001-05-08 Procédé pour le traitement de plaques d'impression réutilisables ou de cylindres dans les presses Expired - Lifetime EP1155871B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10024184 2000-05-15
DE10024184A DE10024184A1 (de) 2000-05-15 2000-05-15 Verfahren zum Behandeln von erneut bebilderbaren Druckformen oder Druckformzylindern in Druckmaschinen

Publications (3)

Publication Number Publication Date
EP1155871A2 EP1155871A2 (fr) 2001-11-21
EP1155871A3 EP1155871A3 (fr) 2003-08-20
EP1155871B1 true EP1155871B1 (fr) 2004-08-11

Family

ID=7642402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01111023A Expired - Lifetime EP1155871B1 (fr) 2000-05-15 2001-05-08 Procédé pour le traitement de plaques d'impression réutilisables ou de cylindres dans les presses

Country Status (3)

Country Link
EP (1) EP1155871B1 (fr)
AT (1) ATE273141T1 (fr)
DE (2) DE10024184A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007005815A1 (de) * 2007-02-06 2008-08-07 Maschinenfabrik Wifag Bebilderung einer Offset-Druckform
EP2269834A1 (fr) 2009-06-30 2011-01-05 WIFAG Maschinenfabrik AG Procédé et dispositif de modification d'une image d'impression sur une plaque d'impression
US8318406B2 (en) * 2010-02-03 2012-11-27 Eastman Kodak Company Method for fixing a flexographic plate

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4729310A (en) * 1982-08-09 1988-03-08 Milliken Research Corporation Printing method
JP2000015770A (ja) * 1998-06-30 2000-01-18 Think Laboratory Co Ltd 印刷版の再利用方法

Also Published As

Publication number Publication date
DE10024184A1 (de) 2001-11-22
EP1155871A3 (fr) 2003-08-20
ATE273141T1 (de) 2004-08-15
DE50103183D1 (de) 2004-09-16
EP1155871A2 (fr) 2001-11-21

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