EP1380417B1 - Précurseur de plaque d'impression lithographique de type positif - Google Patents

Précurseur de plaque d'impression lithographique de type positif Download PDF

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Publication number
EP1380417B1
EP1380417B1 EP20030101850 EP03101850A EP1380417B1 EP 1380417 B1 EP1380417 B1 EP 1380417B1 EP 20030101850 EP20030101850 EP 20030101850 EP 03101850 A EP03101850 A EP 03101850A EP 1380417 B1 EP1380417 B1 EP 1380417B1
Authority
EP
European Patent Office
Prior art keywords
coating
plate precursor
hydrophilic surface
precursor according
printing plate
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 - Fee Related
Application number
EP20030101850
Other languages
German (de)
English (en)
Other versions
EP1380417A1 (fr
Inventor
Marc Van Damme
Joan Vermeersch
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.)
Agfa NV
Original Assignee
Agfa Gevaert NV
Agfa Gevaert 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 Agfa Gevaert NV, Agfa Gevaert AG filed Critical Agfa Gevaert NV
Priority to EP20030101850 priority Critical patent/EP1380417B1/fr
Publication of EP1380417A1 publication Critical patent/EP1380417A1/fr
Application granted granted Critical
Publication of EP1380417B1 publication Critical patent/EP1380417B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • B41C1/1008—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials
    • 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
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/04—Printing plates or foils; Materials therefor metallic
    • B41N1/08—Printing plates or foils; Materials therefor metallic for lithographic printing
    • B41N1/083—Printing plates or foils; Materials therefor metallic for lithographic printing made of aluminium or aluminium alloys or having such surface layers
    • 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
    • B41N3/03—Chemical or electrical pretreatment
    • B41N3/034—Chemical or electrical pretreatment characterised by the electrochemical treatment of the aluminum support, e.g. anodisation, electro-graining; Sealing of the anodised layer; Treatment of the anodic layer with inorganic compounds; Colouring of the anodic layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
    • B41C2210/02—Positive working, i.e. the exposed (imaged) areas are removed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
    • B41C2210/06—Developable by an alkaline solution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
    • B41C2210/22—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation characterised by organic non-macromolecular additives, e.g. dyes, UV-absorbers, plasticisers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
    • B41C2210/24—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation characterised by a macromolecular compound or binder obtained by reactions involving carbon-to-carbon unsaturated bonds, e.g. acrylics, vinyl polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
    • B41C2210/26—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation characterised by a macromolecular compound or binder obtained by reactions not involving carbon-to-carbon unsaturated bonds
    • B41C2210/262—Phenolic condensation polymers, e.g. novolacs, resols

Claims (9)

  1. Précurseur de cliché d'impression lithographique à effet positif comprenant (i) un support en aluminium grainé et anodisé avec une surface hydrophile et (ii) un revêtement oléophile thermosensible appliqué sur la surface hydrophile, ledit revêtement étant apte à la dissolution dans un révélateur alcalin aqueux à une vitesse de dissolution plus élevée dans les zones dudit revêtement exposées à la chaleur ou à la lumière infrarouge que dans les zones non exposées, caractérisé en ce que la surface hydrophile présente une rugosité de la surface, exprimée en rugosité moyenne arithmétique Ra, qui est inférieure à 0,40 µm et en ce qu'elle comprend plus de 3,0 g/m2 d'oxyde d'aluminium.
  2. Précurseur de cliché selon la revendication 1, caractérisé en que la surface hydrophile présente une rugosité de la surface, exprimée en rugosité moyenne arithmétique Ra, qui est inférieure à 0,3 µm.
  3. Précurseur de cliché selon l'une quelconque des revendications précédentes, caractérisé en ce que le support en aluminium comprend plus de 4,0 g/m2 d'oxyde d'aluminium à la surface hydrophile.
  4. Précurseur de cliché selon l'une quelconque des revendications précédentes, caractérisé en ce que le revêtement contient (a) un polymère hydrophobe qui est soluble dans le révélateur et (b) un inhibiteur de dissolution.
  5. Précurseur de cliché selon la revendication 4, caractérisé en ce que l'inhibiteur de dissolution est un polymère repoussant l'eau.
  6. Précurseur de cliché selon la revendication 5, caractérisé en ce que le polymère repoussant l'eau est
    - un polymère comprenant des unités de siloxane et/ou de perfluoroalkyle; ou
    - un copolymère séquencé ou greffé d'une séquence de poly(oxyde d'alkylène) et d'une séquence comprenant des unités de siloxane et/ou de perfluoroalkyle.
  7. Précurseur de cliché selon la revendication 4, caractérisé en ce que l'inhibiteur de dissolution est un composé organique comprenant un groupe aromatique et un site de formation de liaisons hydrogène.
  8. Précurseur de cliché selon l'une quelconque des revendications précédentes, caractérisé en ce que le revêtement contient en outre un accélérateur de la dissolution.
  9. Utilisation d'un support en aluminium grainé et anodisé avec une surface hydrophile, qui est caractérisée par une rugosité de la surface, exprimée en rugosité moyenne arithmétique Ra, qui est inférieure à 0,40 µm, et qui comprend plus de 3,0 g/m2 d'oxyde d'aluminium,
    dans un précurseur de cliché d'impression lithographique à effet positif comprenant un revêtement oléophile thermosensible appliqué sur la surface hydrophile, ledit revêtement étant apte à la dissolution dans un révélateur alcalin aqueux à une vitesse de dissolution plus élevée dans les zones dudit revêtement exposées à la chaleur ou à la lumière infrarouge que dans les zones non exposées,
    pour prolonger la durée de stockage dudit précurseur de cliché d'impression.
EP20030101850 2002-07-03 2003-06-24 Précurseur de plaque d'impression lithographique de type positif Expired - Fee Related EP1380417B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20030101850 EP1380417B1 (fr) 2002-07-03 2003-06-24 Précurseur de plaque d'impression lithographique de type positif

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP02100778 2002-07-03
EP02100778 2002-07-03
EP20030101850 EP1380417B1 (fr) 2002-07-03 2003-06-24 Précurseur de plaque d'impression lithographique de type positif

Publications (2)

Publication Number Publication Date
EP1380417A1 EP1380417A1 (fr) 2004-01-14
EP1380417B1 true EP1380417B1 (fr) 2006-08-23

Family

ID=29737946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030101850 Expired - Fee Related EP1380417B1 (fr) 2002-07-03 2003-06-24 Précurseur de plaque d'impression lithographique de type positif

Country Status (1)

Country Link
EP (1) EP1380417B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070077513A1 (en) 2003-12-18 2007-04-05 Agfa-Gevaert Positive-working lithographic printing plate precursor
DE602004006378T2 (de) * 2004-04-21 2008-01-10 Agfa Graphics N.V. Verfahren zur genauen Belichtung von kleinen Punkten auf eine Wärmeempfindliche positiv arbeitende Flachdruckplatte
US7467587B2 (en) 2004-04-21 2008-12-23 Agfa Graphics, N.V. Method for accurate exposure of small dots on a heat-sensitive positive-working lithographic printing plate material

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0223737B1 (fr) * 1985-10-30 1989-12-27 Schweizerische Aluminium Ag Support pour plaque d'impression lithographique
DE4428661B4 (de) * 1993-08-13 2004-07-01 Mitsubishi Paper Mills Limited Lithographische Druckplatte
DE4426012C2 (de) * 1994-07-22 1998-05-20 Roland Man Druckmasch Löschbare Druckform, ihre Verwendung sowie Verfahren zum Löschen und Regenerieren der Druckform
DE4435221A1 (de) * 1994-09-30 1996-04-04 Hoechst Ag Verfahren zum mechanischen Aufrauhen der Oberfläche eines Druckplattenträgers und Bürstenwalze zur Durchführung des Verfahrens
US6140022A (en) * 1996-07-19 2000-10-31 Agfa-Gevaert, N.V. Radiation sensitive imaging element and a method for producing lithographic plates therewith
US6374737B1 (en) * 2000-03-03 2002-04-23 Alcoa Inc. Printing plate material with electrocoated layer

Also Published As

Publication number Publication date
EP1380417A1 (fr) 2004-01-14

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