EP1167024B1 - Procédé et dispositif pour appliquer des couches d'un matériau permettant la formation d'images dans une machine d'impression - Google Patents

Procédé et dispositif pour appliquer des couches d'un matériau permettant la formation d'images dans une machine d'impression Download PDF

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Publication number
EP1167024B1
EP1167024B1 EP01114001A EP01114001A EP1167024B1 EP 1167024 B1 EP1167024 B1 EP 1167024B1 EP 01114001 A EP01114001 A EP 01114001A EP 01114001 A EP01114001 A EP 01114001A EP 1167024 B1 EP1167024 B1 EP 1167024B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
printing
rubber blanket
application
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.)
Expired - Lifetime
Application number
EP01114001A
Other languages
German (de)
English (en)
Other versions
EP1167024A1 (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 EP1167024A1 publication Critical patent/EP1167024A1/fr
Application granted granted Critical
Publication of EP1167024B1 publication Critical patent/EP1167024B1/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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/70—Forming the printing surface directly on the form cylinder

Definitions

  • the invention relates to a method in printing machines for applying imageable coatings, wherein the printing machine is equipped with a counter-pressure cylinder, a rubber cylinder and a cooperating with an inking unit and possibly a dampening unit printing forme cylinder and the imageable coating with parked inking or dampening on the surface the printing plate cylinder or on the surface of a clamped on the printing form cylinder printing plate is applied.
  • the invention further relates to a device in printing machines for applying imageable coatings, wherein the printing machine consists of a counter-pressure cylinder, a rubber cylinder, an inking unit which can be pivoted away from the printing form cylinder and, if appropriate, a printing form cylinder which also interacts with a dampening unit which can likewise be pivoted away, and a coating device for applying the imageable coating .
  • the imageable coating can be applied to the surface of the printing form cylinder itself or to the surface of a printing form that can be clamped onto the printing form cylinder, and a device for stopping the blanket cylinder from the impression cylinder and / or the printing form cylinder is provided.
  • EP-A-0 368 180 a process for imaging a printing forme cylinder is known in which a picture-adequate substance application is carried out on the blanket cylinder of a rotary printing press by the image-adequate substance is dissolved out of a thermal transfer film with suitable agents. This substance is transferred in ropes to the plate cylinder when the impression cylinder is turned on and when the impression cylinder is turned on.
  • a method for imaging or for imaging and neutralization of a printing plate of a printing forme cylinder of a printing press is known.
  • the printed image information to be applied to the printing plate is available in digital form.
  • a medium carrying the print image information is applied to the printing plate and released again after the printing process.
  • the printing plate imaging device optionally includes an integrated curing device and a release device.
  • the curing of the medium applied to the printing plate by means of UV curing or radiation curing.
  • a disadvantage of this solution is that the installation space for the device for applying the medium is severely limited.
  • the realization of the invention provides favorable space for the accommodation of the institutions concerned.
  • the accompanying drawing shows a printing unit 1 a multicolour Bogenoffsetrotations printing machine.
  • Each printing unit 1 contains, as a sheet-guiding cylinder, a counter-pressure cylinder 2 and a transfer cylinder 3 and a printing form cylinder 4 and a blanket cylinder 5 as a printing image-transferring cylinder.
  • the blanket cylinder 5 can be turned off by the impression cylinder 2 and / or the printing form cylinder 4.
  • Each printing form cylinder 4 is assigned an inking unit 6 and a dampening unit 7. These are equipped with facilities not shown here, which make their withdrawal from the plate cylinder 4 possible. On the printing form cylinder 4, a (not shown here printing plate) can be clamped.
  • the printing form cylinder 4 is further associated with a Becularungs worn 9.
  • the imaging device 9 for imaging the printing form cylinder 4 is designed as a laser device which cures the image-carrying elements. According to another method, a laser-based ablation device may also be used.
  • the blanket cylinder 5 is assigned a coating device 8 and a washing device 10.
  • the coating device 8 is designed here as a chambered doctor blade.
  • the washing device 10 can be moved be executed so that it can be used in addition to the cleaning of the blanket cylinder 5 for the cleaning of the printing forme cylinder 4.
  • a medium is applied to the surface of the blanket cylinder 5 by the coating device 8. This is done by a chambered doctor blade or other suitable means. Since the blanket cylinder 5 is in contact with the printing form cylinder 4, this medium is transferred to this and built there an imageable coating . During the coating process, a value is chosen for the rotational speed of the blanket cylinder 5 and the plate cylinder 4, which depends on the rheological properties of the coating material.
  • the contact between the blanket cylinder 5 and the plate cylinder 4 is released.
  • the illustration can now be done. This can be done in different ways depending on the coating material and coating method.
  • the medium is cured by the laser of the imaging device 9 at the points carrying the image information so that printing or non-printing areas are formed on the surface of the printing form cylinder 4 or on the surface of the printing form.
  • the medium for the coating is 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. According to another variant, it is also possible to heat the medium, applied to the printing form cylinder 4 and to achieve the solidification by cooling.
  • the printing form cylinder 4 prepared in this way after application of the medium can now be imaged by the imaging device 9 according to the ablation method. As a result of the imaging process, the surface of the layer is subjected to image information so that printing and non-printing areas are formed. Depending on whether the layer is color-friendly or humectant-friendly, the ablation of the layer leads to printing or non-printing areas on the surface of the printing forme cylinder 4.
  • the coating material remaining on the surface of the blanket cylinder 5 is washed off or doctored off.
  • a washing device 10 is used whose position is movable. As a result, after washing off the coating material from the blanket cylinder 5, the material not cured on the printing form cylinder 4 or on the printing form by the imaging device 9 can also be washed off.
  • the contact between the blanket cylinder 5 and the plate cylinder 4 is not interrupted after reaching the required layer thickness.
  • the material is simultaneously washed off the blanket cylinder 5 and the printing form cylinder 4 by the washing device 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Rotary Presses (AREA)
  • Printing Methods (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printing Plates And Materials Therefor (AREA)

Claims (11)

  1. Procédé pour appliquer des revêtements susceptibles d'être illustrés dans des machines d'impression équipées d'un cylindre de contre-pression (2), d'un cylindre porte-blanchet (5) et d'un cylindre porte-plaque coopérant avec un système d'encrage (6) et le cas échéant avec un système de mouillage (7), le revêtement susceptible d'être illustré étant appliqué à la surface du cylindre porte-plaque (4) ou à la surface d'une plaque d'impression tendue sur le cylindre porte-plaque (4) lorsque le système d'encrage ou de mouillage est arrêté,
    caractérisé en ce qu'
    on écarte le cylindre porte-blanchet (5) du cylindre de contre-pression (2),
    on applique la matière d'enduction par une installation d'enduction (8) sur le cylindre porte-blanchet (5) et
    on transfère cette matière par le cylindre porte-blanchet (5) sur le cylindre porte-plaque (4).
  2. Procédé d'application de revêtements susceptibles d'être illustrés dans des machines d'impression selon la revendication 1,
    caractérisé en ce qu'
    on utilise un système de chambre à racle pour appliquer le revêtement sur le cylindre porte-blanchet (5).
  3. Procédé d'application de revêtements susceptibles d'être illustrés dans des machines d'impression selon la revendication 1,
    caractérisé en ce qu'
    on pulvérise la matière d'enduction sur le cylindre porte-blanchet (5).
  4. Procédé d'application de revêtements susceptibles d'être illustrés dans des machines d'impression selon les revendications 1 à 3,
    caractérisé en ce que
    pour transférer le revêtement du cylindre porte-blanchet (5) sur le cylindre porte-plaque d'impression (4), on fait fonctionner les deux cylindres (4, 5) en contact l'un avec l'autre à une vitesse de rotation adaptée aux caractéristiques rhéologiques de la matière d'enduction.
  5. Procédé d'application de revêtements susceptibles d'être illustrés dans des machines d'impression selon la revendication 1 ou la revendication 4,
    caractérisé en ce qu'
    après transfert de la matière d'enduction sur le cylindre porte-plaque (4) on coupe la coopération entre le cylindre porte-blanchet (5) et le cylindre porte-plaque (4) et on enlève la matière d'enduction qui reste sur le cylindre porte-blanchet (5).
  6. Procédé d'application de revêtements susceptibles d'être illustrés dans des machines d'impression selon les revendications 1 ou 5,
    caractérisé en ce qu'
    on enlève la matière d'enduction non transférée au cylindre porte-plaque (4) à l'aide d'une racle et/ou d'une installation de lavage.
  7. Installation pour des machines d'impression, destinée à appliquer un revêtement susceptible d'être illustré,
    la machine d'impression se composant d'un cylindre de contre-pression (2), d'un cylindre porte-blanchet (5), d'un cylindre porte-plaque (4) muni d'un système d'ancrage qui peut être dégagé du cylindre porte-plaque (4) et le cas échéant d'un système de mouillage qui peut également se dégager du cylindre porte-plaque (4) et d'une installation d'enduction (8) pour appliquer le revêtement susceptible d'être illustré,
    le revêtement susceptible d'être illustré étant appliqué sur la surface du cylindre porte-plaque (4) directement ou sur la surface d'une plaque d'impression tendue sur le cylindre porte-plaque (4) et une installation pour dégager le cylindre porte-blanchet (5) du cylindre de contre-pression (2) et/ou du cylindre porte-plaque (4),
    caractérisée en ce que
    l'installation d'enduction (8) est associée au cylindre porte-blanchet (5).
  8. Installation pour des machines d'impression, pour appliquer un revêtement susceptible d'être illustré, selon la revendication 7,
    caractérisée par
    un système de racle à chambre pour appliquer la matière d'enduction sur le cylindre porte-blanchet (5).
  9. Installation pour des machines d'impression, pour appliquer un revêtement susceptible d'être illustré, selon la revendication 7,
    caractérisée par
    une installation de pulvérisation pour appliquer la matière d'enduction sur le cylindre porte-blanchet (5).
  10. Installation pour des machines d'impression, pour appliquer un revêtement susceptible d'être illustré, selon la revendication 7,
    caractérisée par
    une installation pour enlever la matière d'enduction qui reste sur le cylindre porte-blanchet (5), cette installation pouvant être appliquée contre le cylindre porte-blanchet (5).
  11. Installation pour des machines d'impression, pour appliquer un revêtement susceptible d'être illustré, selon les revendications 8 et 10,
    caractérisée en ce que
    l'installation pour enlever la matière d'enduction qui reste sur le cylindre porte-blanchet (5) est une racle et/ou une installation de lavage (10).
EP01114001A 2000-06-21 2001-06-08 Procédé et dispositif pour appliquer des couches d'un matériau permettant la formation d'images dans une machine d'impression Expired - Lifetime EP1167024B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10030599A DE10030599A1 (de) 2000-06-21 2000-06-21 Verfahren und Einrichtung in Druckmaschinen zum Aufbringen bebilderbarer Schichten
DE10030599 2000-06-21

Publications (2)

Publication Number Publication Date
EP1167024A1 EP1167024A1 (fr) 2002-01-02
EP1167024B1 true EP1167024B1 (fr) 2006-08-09

Family

ID=7646524

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01114001A Expired - Lifetime EP1167024B1 (fr) 2000-06-21 2001-06-08 Procédé et dispositif pour appliquer des couches d'un matériau permettant la formation d'images dans une machine d'impression

Country Status (3)

Country Link
EP (1) EP1167024B1 (fr)
AT (1) ATE335605T1 (fr)
DE (2) DE10030599A1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3837978A1 (de) * 1988-11-09 1990-05-10 Roland Man Druckmasch Verfahren zur bebilderung eines druckformzylinders
EP0940252A1 (fr) * 1998-03-03 1999-09-08 Agfa-Gevaert N.V. Machine à imprimer rotative avec un compositeur d'images intégré comprenant un cylindre creux transparent

Also Published As

Publication number Publication date
EP1167024A1 (fr) 2002-01-02
ATE335605T1 (de) 2006-09-15
DE10030599A1 (de) 2002-01-03
DE50110665D1 (de) 2006-09-21

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