EP1167023B1 - Procédé pour appliquer des couches d'un matériau permettant la formation d'images dans une machine d'impression - Google Patents

Procédé 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
EP1167023B1
EP1167023B1 EP01114000A EP01114000A EP1167023B1 EP 1167023 B1 EP1167023 B1 EP 1167023B1 EP 01114000 A EP01114000 A EP 01114000A EP 01114000 A EP01114000 A EP 01114000A EP 1167023 B1 EP1167023 B1 EP 1167023B1
Authority
EP
European Patent Office
Prior art keywords
image
cylinder
rubber blanket
blanket cylinder
printing
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
EP01114000A
Other languages
German (de)
English (en)
Other versions
EP1167023A1 (fr
Inventor
Arndt Jentzsch
Klaus Schanze
Franz Simon
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 EP1167023A1 publication Critical patent/EP1167023A1/fr
Application granted granted Critical
Publication of EP1167023B1 publication Critical patent/EP1167023B1/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 and a device in printing machines for applying image-forming coatings, wherein the printing machine is equipped with a counter-pressure cylinder, with a blanket cylinder and a cooperating with an inking unit and possibly with a dampening unit printing forme cylinder.
  • the document DE 195 08 843 A1 describes a method for imaging or for imaging and neutralization of a printing plate of a printing forme cylinder of a printing press.
  • 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.
  • a method for imaging a printing forme cylinder or for imaging a printing plate of a printing forme cylinder in a printing press is known.
  • a print image information carrying medium is applied to the printing plate. This is done by imagewise controlled heating of the surface of a transfer belt by laser beams.
  • the transfer belt is pulled continuously between the laser head and the surface of the printing forme cylinder or the printing forme and thereby traversingly moved with the laser writing head.
  • a disadvantage of the above solutions is that the installation space for the device for applying the medium is severely limited.
  • EP-A-0 368 180 a method for imaging a printing forme cylinder is known, in which a picture-adequate substance application on the blanket cylinder mecanict Rotationsdrukmaschine takes place by the image-adequate substance is removed from a thermal transfer film by suitable means. This substance is transferred line by line to the printing plate cylinder when the printing cylinder and when printing forme cylinder employed.
  • a coating material is used which melts onto the blanket cylinder immediately after being applied and is melted on the printing form cylinder prior to transfer in order to enable the transfer.
  • the object of the invention is to provide a method which allows a quick and easy to betechnikstelligende imaging of the printing plates or the plate cylinder in the printing press.
  • the object is achieved by the features of the first and the tenth claim.
  • the invention has the advantage that sufficient space is now available for the device for applying the coating material.
  • 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.
  • the inking unit 6 and the dampening unit 7 are equipped with facilities not shown here, which make their withdrawal from the plate cylinder 4 possible.
  • a (not shown here) printing form can be clamped.
  • the blanket cylinder 5 is associated with a imaging device 8 and a washing device 9.
  • the washing device 9 can be designed to be movable, 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.
  • the blanket cylinder 5 is turned off by the impression cylinder 2.
  • the operative connection is interrupted by the blanket cylinder 5 to the plate cylinder 4.
  • the image information carrying medium in the form of an imaging coating material is applied to the surface of the blanket cylinder 5. This can be done in different ways, as shown below:
  • the imaging coating material is applied directly to the surface of the blanket cylinder 5 or to the surface of a stretched on the blanket cylinder 5 sleeves. Only the areas which are to transmit image information are loaded with the medium. In the process, the imaging head traverses in the axial direction and transmits line by line to the surface of the blanket cylinder 5 or to the sleeve.
  • the thermal influence of the laser on the transfer film located imaging coating material is transferred from the transfer film on the blanket cylinder 5 and on the sleeve.
  • the imaging device 8 moves traversing in the axial direction to the blanket cylinder fifth
  • the surface of the blanket cylinder 5 or the sleeve is temporarily imaged by a laser device.
  • ink-repellent and ink-receptive areas form as carriers of the image information.
  • a subsequent coating operation preferably by a chamber doctor blade (not shown), only the ink-receiving areas accept the medium.
  • the resulting image-forming coating is now the carrier of the image information.
  • the imaging coating there are two ways to transfer the imaging coating to the printing form cylinder 4. If the blanket cylinder 5 is not turned off by the plate cylinder 4, the medium is transferred to the plate cylinder 4 or to the printing plate clamped on the plate cylinder 4 in the course of the imaging. When the printing forme cylinder 4 is turned off, after transfer of the imaging coating onto the blanket cylinder 5, the operative connection between blanket cylinder 5 and printing form cylinder 4 is restored and the medium is transferred to the forme cylinder 4.
  • the inking and dampening unit 6; 7 parked from the plate cylinder 4.
  • a value is selected which depends on the rheological properties of the coating material.
  • the speed is also adjusted.
  • a washing device 9 is used whose position is movable. With this washing device 9, it is then also possible, in addition to the remaining on the blanket cylinder 5 medium, the imaging coating after completed printing process from the printing form cylinder 4 again.
  • washing can be dispensed with if suitable media are used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ink Jet (AREA)
  • Rotary Presses (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (9)

  1. Procédé pour des machines d'impression, pour appliquer des revêtements d'illustrations, selon lequel,
    - la machine d'impression comprend : un cylindre de contre-pression (2), un cylindre porte-blanchet (5) et un cylindre porte-plaque (4) coopérant avec encrier (6) et le cas échéant avec un groupe de mouillage (7), et
    - l'encrier et le groupe de mouillage sont dégagés du cylindre porte-plaque (4),
    - le cylindre porte-blanchet (5) est dégagé du cylindre de contre-pression (2), et
    - le cylindre porte-blanchet (5) est dégagé du cylindre porte-plaque (4),
    - on applique une matière de revêtement générant les illustrations, en respectant les illustrations sur le cylindre porte-blanchet (5),
    - après l'application correcte de l'image, on pousse la matière de revêtement donnant l'image, le cylindre porte-plaque (4) et le cylindre porte-blanchet (5), et
    - on transfère la matière de revêtement d'illustrations sur le dispositif générant les illustrations par l'intermédiaire du cylindre porte-blanchet (5) sur le cylindre porte-plaque (4).
  2. Procédé applicable à des machines d'impression pour appliquer une illustration d'image selon la revendication 1,
    caractérisé en ce que
    l'application de la matière de revêtement générant les illustrations sur le cylindre porte blanchet (5) se fait par jet d'encre.
  3. Procédé pour une machine d'impression, pour appliquer des revêtements générant des images selon la revendication 1,
    caractérisé en ce que
    l'application de la matière de revêtement générant les illustrations sur le cylindre porte-blanchet (5) se fait par un film de transfert coopérant avec un laser et par l'influence thermique du laser, le milieu porté par le film de transfert est transmis du film de transfert au cylindre porte-blanchet (5).
  4. Procédé pour une machine d'impression pour appliquer des revêtements générant des images selon l'une des revendications 1 à 3,
    caractérisé en ce que
    la matière de revêtement générant les illustrations est appliquée à la surface du cylindre porte-blanchet (5) ou à la surface d'un manchon installé sur le cylindre porte-blanchet (5).
  5. Procédé pour une machine d'impression pour appliquer des revêtements générant des images selon la revendication 1,
    caractérisé en ce que
    sur le cylindre porte-blanchet (5), on génère des informations d'image sous la forme de zones temporaires repoussant l'encre et de zones temporaires absorbant l'encre, formées par une installation appropriée et le cylindre porte-blanchet (5) est ensuite revêtu de manière continue.
  6. Procédé pour une machine d'impression pour appliquer des revêtements générant des images selon la revendication 5,
    caractérisé en ce que
    les informations d'image sont prévues sur la surface du cylindre porte-blanchet (5) ou sur la surface d'un manchon installé sur le cylindre porte-blanchet (5).
  7. Procédé pour une machine d'impression pour appliquer des revêtements générant des images selon l'une des revendications 1 à 6,
    caractérisé en ce que
    pour transférer le revêtement d'illustration, du cylindre porte-blanchet (5) au cylindre porte-plaque (4) on fait fonctionner les deux cylindres (4, 5) en contact l'un avec l'autre selon une vitesse de rotation adaptée aux caractéristiques rhéologiques du milieu à transférer.
  8. Procédé pour une machine d'impression pour appliquer des revêtements générant des images selon la revendication 1,
    caractérisé en ce que
    le revêtement d'illustration est appliqué à la surface d'une plaque d'impression tendue sur le cylindre porte-plaque (4) ou directement à la surface du cylindre porte-plaque (4).
  9. Procédé pour une machine d'impression pour appliquer des revêtements générant des images selon l'une des revendications 1 à 6,
    caractérisé en ce qu'
    après le transfert du revêtement d'illustration, on neutralise la coopération entre le cylindre porte-blanchet (5) et le cylindre porte-plaque (4) et on lave le cylindre porte-blanchet (5).
EP01114000A 2000-06-21 2001-06-08 Procédé pour appliquer des couches d'un matériau permettant la formation d'images dans une machine d'impression Expired - Lifetime EP1167023B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10030601A DE10030601A1 (de) 2000-06-21 2000-06-21 Verfahren und Einrichtung in Druckmaschinen zum Aufbringen von Bildinformationen tragenden Schichten
DE10030601 2000-06-21

Publications (2)

Publication Number Publication Date
EP1167023A1 EP1167023A1 (fr) 2002-01-02
EP1167023B1 true EP1167023B1 (fr) 2006-08-09

Family

ID=7646526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01114000A Expired - Lifetime EP1167023B1 (fr) 2000-06-21 2001-06-08 Procédé pour appliquer des couches d'un matériau permettant la formation d'images dans une machine d'impression

Country Status (3)

Country Link
EP (1) EP1167023B1 (fr)
AT (1) ATE335604T1 (fr)
DE (2) DE10030601A1 (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
DE50110664D1 (de) 2006-09-21
EP1167023A1 (fr) 2002-01-02
ATE335604T1 (de) 2006-09-15
DE10030601A1 (de) 2002-01-03

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