EP1090750A2 - Procédé de traitement de plaques d'impression dans des machines d'impression - Google Patents

Procédé de traitement de plaques d'impression dans des machines d'impression Download PDF

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Publication number
EP1090750A2
EP1090750A2 EP00120719A EP00120719A EP1090750A2 EP 1090750 A2 EP1090750 A2 EP 1090750A2 EP 00120719 A EP00120719 A EP 00120719A EP 00120719 A EP00120719 A EP 00120719A EP 1090750 A2 EP1090750 A2 EP 1090750A2
Authority
EP
European Patent Office
Prior art keywords
printing
medium
printing plate
plate
print image
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.)
Ceased
Application number
EP00120719A
Other languages
German (de)
English (en)
Other versions
EP1090750A3 (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 EP1090750A2 publication Critical patent/EP1090750A2/fr
Publication of EP1090750A3 publication Critical patent/EP1090750A3/fr
Ceased 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
    • B41C1/10—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
    • 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
    • B41C1/1075—Mechanical aspects of on-press plate preparation

Definitions

  • the invention relates to a method for treating printing plates in printing machines for offset printing, the printing plates being written directly in the printing press and then regenerated again.
  • Document DE 195 08 843 A1 describes a method for imaging or for imaging and neutralizing a printing plate of a printing form cylinder in a printing machine containing an inking unit, image transfer and sheet guiding cylinders, in particular a multicolour printing machine, including feeder and delivery, the individual being applied to the printing plate
  • Print image information is available in digital form.
  • a medium carrying the print image information is applied to the printing plate and the applied medium is detached after the printing process.
  • the device for printing plate imaging optionally contains an integrated curing device and a detaching device.
  • the medium applied to the printing plate is cured by means of UV curing or radiation curing. No further details are given on the function of the discharge device.
  • a method for the regeneration of a printing form which is preferably previously directly illustrated and is suitable for offset printing is known.
  • the regeneration of the printing plate comprises removing the imaging on the printing form and hydrophilizing the surface of the printing form.
  • the regeneration takes place in that an ionized process gas is applied to the printing form by means of an application device, a reactive deletion of the images and the simultaneous hydrophilization being carried out in one process step.
  • the resulting volatile reaction products are removed by means of a suction device.
  • a disadvantage of this regeneration device is the high technical outlay which has to be carried out for the regeneration of the printing plates.
  • the drawing shows a multi-color sheet-fed offset printing press.
  • the multi-color sheet-fed offset printing press contains two printing units 1, a feeder 3 and a delivery 4;
  • the method according to the invention can be carried out on such a printing press.
  • Each printing unit contains sheet-guiding cylinders 2 - printing cylinders 2, transfer cylinders 2 - and printing image-transferring cylinders 5; 6 - printing form cylinder 5; Offset cylinder 6.
  • An inking unit 7 or an inking unit 7 and a dampening unit 8 are assigned to each printing form cylinder 5.
  • a printing plate 9 is clamped on the printing form cylinder 5.
  • the on the printing form cylinder 5 on the tensioned printing plate 9 is image-neutral.
  • a device for printing plate imaging 10 and the curing and release device 11 are assigned to the printing form cylinder 5.
  • a computer (not shown) (RIP: raster image processor), Postscript (DTP; CEPS) and / or other formatted data for the printing process are prepared in a generally known manner and sent to the device for printing plate imaging 10.
  • RIP raster image processor
  • DTP digital printed image information
  • CEPS CEPS
  • a medium containing the print image information is applied to the printing plate 9.
  • the device for printing plate imaging 10 - applying a medium - works according to the ink-jet principle.
  • the medium is applied to the pressure plate 9 via contact transmission.
  • the medium applied can have ink-carrying or ink-repellent properties.
  • the medium is color-friendly and the printing plate 9 is dampening agent-friendly; a color or a color-like product can be used as the medium.
  • the printing plate 9 prepared after the application of the medium, which is self-curing, with printing areas - applied medium - and non-printing areas - locations where no medium has been applied to the printing plate 9 - is now prepared for the usual printing process - inking / printing.
  • the device for printing plate imaging 10 and the curing and discharge device 11, as shown, are arranged in the imaging direction in front of the inking unit 7 or in the direction of rotation in front of the dampening unit 8.
  • the rotational speed of the printing form cylinder 5 is synchronized with the line-controlled speed of the device for printing plate imaging 10.
  • the medium applied to the pressure plate 9 cannot be cured automatically, parallel to the coating, the medium can be cured using UV light (polymerization) or via laser beam drying and baking.
  • the medium can also possible to heat the medium and apply it to the pressure plate 9 and to achieve the solidification by cooling.
  • the printing process can be carried out in a conventional manner using ink and water or in dry offset using the Toray process. After the printing plate 9 has been printed, the imaging of the printing plate 9 can be removed. This is done with laser radiation with subsequent removal of color residues that have come off on the printing plate 9. The detached elements should be suctioned off automatically.
  • the imaging, curing of the applied medium and the detachment of the image should preferably take place with the plate cylinder rotating.
  • the plate cylinder can be disengaged from the drive and is provided with its own drive for imaging and image detachment.
  • the curing of the medium on the printing plate 9 and the detachment of the images from the printing plate 9 is carried out by the curing and release device 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Methods (AREA)
  • Printing Plates And Materials Therefor (AREA)
EP00120719A 1999-10-01 2000-09-22 Procédé de traitement de plaques d'impression dans des machines d'impression Ceased EP1090750A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999147225 DE19947225A1 (de) 1999-10-01 1999-10-01 Verfahren zur Behandlung von Druckplatten in Druckmaschinen
DE19947225 1999-10-01

Publications (2)

Publication Number Publication Date
EP1090750A2 true EP1090750A2 (fr) 2001-04-11
EP1090750A3 EP1090750A3 (fr) 2001-08-22

Family

ID=7924091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00120719A Ceased EP1090750A3 (fr) 1999-10-01 2000-09-22 Procédé de traitement de plaques d'impression dans des machines d'impression

Country Status (2)

Country Link
EP (1) EP1090750A3 (fr)
DE (1) DE19947225A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1179424A3 (fr) * 2000-08-09 2002-07-24 Koenig & Bauer Aktiengesellschaft Equipement pour la production d'images
DE10213802A1 (de) * 2002-03-27 2003-10-16 Wifag Maschf Verfahren zur Erhaltung von Bildinformation einer bebilderten Druckform, Vorrichtung hierzu und Druckmaschine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006049149A1 (de) * 2006-10-18 2008-04-24 Man Roland Druckmaschinen Ag Verfahren zum Löschen einer Druckform

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0099264A2 (fr) * 1982-07-09 1984-01-25 Vickers Plc Plaques d'impression
EP0368180A2 (fr) * 1988-11-09 1990-05-16 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Procédé de fabrication d'un cylindre d'impression portant une image
DE19508843A1 (de) * 1995-03-11 1996-09-12 Kba Planeta Ag Verfahren zur Bebilderung einer Druckplatte
EP0786337A2 (fr) * 1996-01-24 1997-07-30 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Procédé pour l'écriture sur plaques d'impressions effaçables
JPH10282654A (ja) * 1997-04-07 1998-10-23 Fuji Photo Film Co Ltd ネガ型画像記録材料
DE19852456A1 (de) * 1997-11-14 1999-06-02 Hitachi Koki Kk Festfarben-Druckoriginalplatte und Verfahren zur Herstellung derselben
DE19813030A1 (de) * 1998-03-25 1999-09-30 Koenig & Bauer Ag Verfahren zur Bebilderung
EP0974455A1 (fr) * 1998-07-16 2000-01-26 Agfa-Gevaert N.V. Procédé à sec de préparation d'un précurseur de plaque lithographique obtenue par voie thermique

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0099264A2 (fr) * 1982-07-09 1984-01-25 Vickers Plc Plaques d'impression
EP0368180A2 (fr) * 1988-11-09 1990-05-16 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Procédé de fabrication d'un cylindre d'impression portant une image
DE19508843A1 (de) * 1995-03-11 1996-09-12 Kba Planeta Ag Verfahren zur Bebilderung einer Druckplatte
EP0786337A2 (fr) * 1996-01-24 1997-07-30 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Procédé pour l'écriture sur plaques d'impressions effaçables
JPH10282654A (ja) * 1997-04-07 1998-10-23 Fuji Photo Film Co Ltd ネガ型画像記録材料
DE19852456A1 (de) * 1997-11-14 1999-06-02 Hitachi Koki Kk Festfarben-Druckoriginalplatte und Verfahren zur Herstellung derselben
DE19813030A1 (de) * 1998-03-25 1999-09-30 Koenig & Bauer Ag Verfahren zur Bebilderung
EP0974455A1 (fr) * 1998-07-16 2000-01-26 Agfa-Gevaert N.V. Procédé à sec de préparation d'un précurseur de plaque lithographique obtenue par voie thermique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 01, 29. Januar 1999 (1999-01-29) & JP 10 282654 A (FUJI PHOTO FILM CO LTD), 23. Oktober 1998 (1998-10-23) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1179424A3 (fr) * 2000-08-09 2002-07-24 Koenig & Bauer Aktiengesellschaft Equipement pour la production d'images
DE10213802A1 (de) * 2002-03-27 2003-10-16 Wifag Maschf Verfahren zur Erhaltung von Bildinformation einer bebilderten Druckform, Vorrichtung hierzu und Druckmaschine
US7059246B2 (en) 2002-03-27 2006-06-13 Maschinenfabric Wifag Process for obtaining image information of an illustrated printing form, device for this and printing press
DE10213802B4 (de) * 2002-03-27 2010-02-18 Wifag Maschinenfabrik Ag Verfahren zur Erhaltung von Bildinformation einer bebilderten Druckform

Also Published As

Publication number Publication date
EP1090750A3 (fr) 2001-08-22
DE19947225A1 (de) 2001-04-12

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