EP1065050B1 - Plaque d'impression lithographique sans traitement contenant une couche oléophile mince - Google Patents

Plaque d'impression lithographique sans traitement contenant une couche oléophile mince Download PDF

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Publication number
EP1065050B1
EP1065050B1 EP19990202109 EP99202109A EP1065050B1 EP 1065050 B1 EP1065050 B1 EP 1065050B1 EP 19990202109 EP19990202109 EP 19990202109 EP 99202109 A EP99202109 A EP 99202109A EP 1065050 B1 EP1065050 B1 EP 1065050B1
Authority
EP
European Patent Office
Prior art keywords
heat
sensitive material
material according
layer
hydrophilic
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
EP19990202109
Other languages
German (de)
English (en)
Other versions
EP1065050A1 (fr
Inventor
Marc C/O Agfa-Gevaert N.V. Van Damme
Joan C/O Agfa-Gevaert N.V. Vermeersch
Wim C/O Agfa-Gevaert N.V. Sap
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 Gevaert 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 EP19990202109 priority Critical patent/EP1065050B1/fr
Priority to DE1999614587 priority patent/DE69914587T2/de
Priority to JP2000192626A priority patent/JP2001047757A/ja
Publication of EP1065050A1 publication Critical patent/EP1065050A1/fr
Application granted granted Critical
Publication of EP1065050B1 publication Critical patent/EP1065050B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41C1/1016—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 characterised by structural details, e.g. protective layers, backcoat layers or several imaging layers
    • 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
    • B41C2210/04—Negative working, i.e. the non-exposed (non-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
    • B41C2210/08—Developable by water or the fountain 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
    • B41C2210/14—Multiple imaging layers
    • 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
    • B41C2210/20—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation characterised by inorganic additives, e.g. pigments, salts
    • 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

Definitions

  • the polymeric binder in the recording layer is heat sensitive: e.g. a polymer containing nitrate ester groups (e.g. self oxidizing binder cellulose nitrate as disclosed in GB-P- 1 316 398 and DE-A- 2 512 038 ); e.g. a polymer containing carbonate groups (e.g. polyalkylene carbonate); e.g. a polymer containing covalently bound chlorine (e.g. polyvinylidene chloride). Also substances containing azo or azide groups , capable of liberating N 2 upon heating are favourably used.
  • nitrate ester groups e.g. self oxidizing binder cellulose nitrate as disclosed in GB-P- 1 316 398 and DE-A- 2 512 038
  • carbonate groups e.g. polyalkylene carbonate
  • chlorine e.g. polyvinylidene chloride
  • substances containing azo or azide groups capable of liberating N 2 upon heating
  • the thickness of a cross-linked hydrophilic layer in a lithographic base in accordance with this embodiment may vary in the range of 0.2 to 25 ⁇ m and is preferably 1 to 10 ⁇ m.
  • Image-wise exposure in connection with the present invention is preferably an image-wise scanning exposure involving the use of a laser or L.E.D.
  • a laser or L.E.D Preferably used are lasers that operate in the infrared or near-infrared, i.e. wavelength range of 700-1500 nm. Most preferred are laser diodes emitting in the near-infrared with an intensity greater than 0.1 mW/ ⁇ m 2 .
  • the printing plate of the present invention can also be used in the printing process as a seamless sleeve printing plate.
  • the printing plate is soldered in a cylindrical form by means of a laser.
  • This cylindrical printing plate which has as diameter the diameter of the print cylinder is slid on the print cylinder instead of mounting a conventional printing plate. More details on sleeves are given in "Grafisch Nieuws" , 15, 1995, page 4 to 6.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Materials For Photolithography (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Claims (10)

  1. Matériau thermosensible pour la fabrication de clichés lithographiques, comprenant, dans l'ordre donné, sur la surface hydrophile d'une base lithographique, une couche oléophilé sensible au rayonnement infrarouge et une couche hydrophile réticulée comprenant un polymère organique hydrophile, un pigment inorganique et un durcisseur, la quantité de ladite couche oléophile sensible au rayonnement infrarouge étant telle que l'on obtient un poids à sec entre 0,1 et 0,75 g/m2.
  2. Matériau thermosensible selon la revendication 1, dans lequel ladite couche oléophile sensible au rayonnement infrarouge est utilisée en une quantité telle que l'on obtient un poids à sec entre 0,15 et 0,5 g/m2.
  3. Matériau thermosensible selon la revendication 1 ou 2, dans lequel ladite couche oléophile comprend un liant et un composé capable de transformer de la lumière en chaleur.
  4. Matériau thermosensible selon la revendication 3, dans lequel ledit liant oléophile est thermosensible.
  5. Matériau thermosensible selon la revendication 3 ou 4, dans lequel ledit composé capable de transformer de la lumière en chaleur est du noir de carbone ou du graphite.
  6. Matériau thermosensible selon l'une quelconque des revendications 1 à 5, dans lequel ladite couche hydrophile réticulée comprend des oxydes ou des hydroxydes du béryllium, du magnésium, de l'aluminium, du silicium, du gadolinium, du germanium, de l'arsenic, de l'indium, de l'étain, de l'antimoine, du tellure, du plomb, du bismuth, du titane ou d'un métal de transition.
  7. Matériau thermosensible selon l'une quelconque des revendications 1 à 6, dans lequel ladite base lithographique est un support en aluminium grainé et anodisé.
  8. Matériau thermosensible selon l'une quelconque des revendications 1 à 7, dans lequel ladite base lithographique est une couche hydrophile réticulée sur un support flexible.
  9. Matériau thermosensible selon l'une quelconque des revendications 1 à 8, dans lequel la couche hydrophile possède une épaisseur à sec entre 0,3 et 5 µm.
  10. Procédé pour fabriquer des clichés d'impression lithographique, comprenant les étapes consistant à (i) exposer en forme d'image à un faisceau laser possédant une intensité supérieure à 0,1 mW/µm2, un matériau thermosensible selon l'une quelconque des revendications 1 à 9 ; (ii) avant ou après l'étape (i), monter le cliché sur une presse d'impression ; (iii) mettre ledit cliché en contact avec une solution de mouillage et avec de l'encre.
EP19990202109 1999-06-29 1999-06-29 Plaque d'impression lithographique sans traitement contenant une couche oléophile mince Expired - Lifetime EP1065050B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19990202109 EP1065050B1 (fr) 1999-06-29 1999-06-29 Plaque d'impression lithographique sans traitement contenant une couche oléophile mince
DE1999614587 DE69914587T2 (de) 1999-06-29 1999-06-29 Verarbeitungsfreie Flachdruckplatte mit einer dünnen oleophilen Schicht
JP2000192626A JP2001047757A (ja) 1999-06-29 2000-06-27 薄い親油性層を有するプロセスレス印刷版

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19990202109 EP1065050B1 (fr) 1999-06-29 1999-06-29 Plaque d'impression lithographique sans traitement contenant une couche oléophile mince

Publications (2)

Publication Number Publication Date
EP1065050A1 EP1065050A1 (fr) 2001-01-03
EP1065050B1 true EP1065050B1 (fr) 2004-02-04

Family

ID=8240384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990202109 Expired - Lifetime EP1065050B1 (fr) 1999-06-29 1999-06-29 Plaque d'impression lithographique sans traitement contenant une couche oléophile mince

Country Status (3)

Country Link
EP (1) EP1065050B1 (fr)
JP (1) JP2001047757A (fr)
DE (1) DE69914587T2 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55105560A (en) * 1979-02-07 1980-08-13 Tomoegawa Paper Co Ltd Photoengraving by laser
JP3625089B2 (ja) * 1995-09-13 2005-03-02 富士写真フイルム株式会社 湿し水不要平版印刷版の形成方法
GB9702568D0 (en) * 1997-02-07 1997-03-26 Horsell Graphic Ind Ltd Planographic printing
US6090524A (en) * 1997-03-13 2000-07-18 Kodak Polychrome Graphics Llc Lithographic printing plates comprising a photothermal conversion material

Also Published As

Publication number Publication date
DE69914587T2 (de) 2005-01-05
EP1065050A1 (fr) 2001-01-03
DE69914587D1 (de) 2004-03-11
JP2001047757A (ja) 2001-02-20

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