EP1295717A3 - Heat-sensitive positive-working lithographic printing plate precursor - Google Patents

Heat-sensitive positive-working lithographic printing plate precursor Download PDF

Info

Publication number
EP1295717A3
EP1295717A3 EP02102309A EP02102309A EP1295717A3 EP 1295717 A3 EP1295717 A3 EP 1295717A3 EP 02102309 A EP02102309 A EP 02102309A EP 02102309 A EP02102309 A EP 02102309A EP 1295717 A3 EP1295717 A3 EP 1295717A3
Authority
EP
European Patent Office
Prior art keywords
developer
heat
printing plate
lithographic printing
plate precursor
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.)
Granted
Application number
EP02102309A
Other languages
German (de)
French (fr)
Other versions
EP1295717B1 (en
EP1295717A2 (en
Inventor
Marc AGFA-GEVAERT Van Damme
Joan AGFA-GEVAERT Vermeersch
Geert AGFA-GEVAERT Deroover
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 EP02102309A priority Critical patent/EP1295717B1/en
Publication of EP1295717A2 publication Critical patent/EP1295717A2/en
Publication of EP1295717A3 publication Critical patent/EP1295717A3/en
Application granted granted Critical
Publication of EP1295717B1 publication Critical patent/EP1295717B1/en
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
    • 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
    • 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
    • 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

Landscapes

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

Abstract

A lithographic printing plate precursor is disclosed which comprises (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer and (ii) a coating provided thereon, the coating comprising an oleophilic layer which, upon image-wise exposure to heat or infrared light and subsequent immersion in an aqueous alkaline developer, dissolves in the developer at a higher dissolution rate in exposed areas than in unexposed areas, wherein the oleophilic layer comprises a polymer that is soluble in the developer and an organic dye in a amount sufficient to provide a visible color to the coating, characterized in that said organic dye does not reduce the dissolution rate of the unexposed areas in the developer.
By using non-inhibiting dyes, the sensitivity of the precursor upon image-wise exposure is increased.
EP02102309A 2001-09-24 2002-09-05 Heat-sensitive positive-working lithographic printing plate precursor Expired - Fee Related EP1295717B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02102309A EP1295717B1 (en) 2001-09-24 2002-09-05 Heat-sensitive positive-working lithographic printing plate precursor

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP01000495 2001-09-24
EP01000495 2001-09-24
EP02102309A EP1295717B1 (en) 2001-09-24 2002-09-05 Heat-sensitive positive-working lithographic printing plate precursor

Publications (3)

Publication Number Publication Date
EP1295717A2 EP1295717A2 (en) 2003-03-26
EP1295717A3 true EP1295717A3 (en) 2003-07-16
EP1295717B1 EP1295717B1 (en) 2007-07-25

Family

ID=26076418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02102309A Expired - Fee Related EP1295717B1 (en) 2001-09-24 2002-09-05 Heat-sensitive positive-working lithographic printing plate precursor

Country Status (1)

Country Link
EP (1) EP1295717B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1588847B1 (en) * 2004-04-21 2007-05-09 Agfa Graphics N.V. Method for accurate exposure of small dots on a heat-sensitive positive-working lithographic plate material
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997039894A1 (en) * 1996-04-23 1997-10-30 Horsell Graphic Industries Limited Heat-sensitive composition and method of making a lithographic printing form with it
WO1998008142A1 (en) * 1996-08-20 1998-02-26 Minnesota Mining And Manufacturing Company Production of color proofs and printing plates
EP0855267A2 (en) * 1997-01-24 1998-07-29 Fuji Photo Film Co., Ltd. Planographic printing plate
EP0913253A1 (en) * 1997-10-28 1999-05-06 Mitsubishi Chemical Corporation Positive photosensitive composition, positive photosensitive lithographic printing plate and method for its treatment
EP0938972A1 (en) * 1998-02-27 1999-09-01 Fuji Photo Film Co., Ltd. Photosensitive lithographic form plate using an image-forming material

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1084070A (en) 1960-08-05 1967-09-20 Kalle Ag Process and material for the preparation of planographic printing plates
DE4417907A1 (en) 1994-05-21 1995-11-23 Hoechst Ag Process for the aftertreatment of plate, foil or strip material, supports of such material and its use for offset printing plates
DE4423140A1 (en) 1994-07-01 1996-01-04 Hoechst Ag Hydrophilized carrier material and recording material produced therewith
JP3814961B2 (en) 1996-08-06 2006-08-30 三菱化学株式会社 Positive photosensitive printing plate
EP0864420B2 (en) 1997-03-11 2005-11-16 Agfa-Gevaert Heat-sensitive imaging element for making positive working printing plates
GB9722862D0 (en) 1997-10-29 1997-12-24 Horsell Graphic Ind Ltd Pattern formation
EP0950517B1 (en) 1998-04-15 2001-10-04 Agfa-Gevaert N.V. A heat mode sensitive imaging element for making positive working printing plates

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997039894A1 (en) * 1996-04-23 1997-10-30 Horsell Graphic Industries Limited Heat-sensitive composition and method of making a lithographic printing form with it
WO1998008142A1 (en) * 1996-08-20 1998-02-26 Minnesota Mining And Manufacturing Company Production of color proofs and printing plates
EP0855267A2 (en) * 1997-01-24 1998-07-29 Fuji Photo Film Co., Ltd. Planographic printing plate
EP0913253A1 (en) * 1997-10-28 1999-05-06 Mitsubishi Chemical Corporation Positive photosensitive composition, positive photosensitive lithographic printing plate and method for its treatment
EP0938972A1 (en) * 1998-02-27 1999-09-01 Fuji Photo Film Co., Ltd. Photosensitive lithographic form plate using an image-forming material

Also Published As

Publication number Publication date
EP1295717B1 (en) 2007-07-25
EP1295717A2 (en) 2003-03-26

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