EP0800928B1 - A heat sensitive imaging element and a method for producing lithographic plates therewith - Google Patents
A heat sensitive imaging element and a method for producing lithographic plates therewith Download PDFInfo
- Publication number
- EP0800928B1 EP0800928B1 EP19970200832 EP97200832A EP0800928B1 EP 0800928 B1 EP0800928 B1 EP 0800928B1 EP 19970200832 EP19970200832 EP 19970200832 EP 97200832 A EP97200832 A EP 97200832A EP 0800928 B1 EP0800928 B1 EP 0800928B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- imaging element
- heat sensitive
- element according
- sensitive imaging
- heat
- 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
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
- B41C1/1025—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 using materials comprising a polymeric matrix containing a polymeric particulate material, e.g. hydrophobic heat coalescing particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/36—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties
- B41M5/366—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties using materials comprising a polymeric matrix containing a polymeric particulate material, e.g. hydrophobic heat coalescing particles
-
- 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
- B41C2210/06—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
- B41C2210/24—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)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Printing Plates And Materials Therefor (AREA)
Description
- dissolving the hydrophobic thermoplastic polymer in an organic water immiscible solvent,
- dispersing the thus obtained solution in water or in an aqueous medium and
- removing the organic solvent by evaporation.
After imaging the plate was processed with Fuji PS-plate developer DP-5 (an alkaline aqueous developer) to remove the unexposed areas resulting in a negative working lithographic printing plate.
Claims (10)
- A heat sensitive imaging element comprising on a hydrophilic surface of a lithographic base an image forming layer comprising hydrophobic thermoplastic polymer particles dispersed in a water insoluble alkali soluble or swellable resin and a compound capable of converting light into heat, said compound being present in said image forming layer or a layer adjacent thereto, characterized in that said alkali swellable or soluble resin comprises phenolic hydroxy groups.
- A heat sensitive imaging element according to claim 1 wherein said water insoluble alkali swellable or soluble resin comprising phenolic hydroxy groups is a novolac resin or a polyvinylphenol resin.
- A heat sensitive imaging element according to claim 1 or 2 wherein said thermoplastic polymer particles have a coagulation temperature of at least 35°C.
- A heat sensitive imaging element according to any of claims 1 to 3 wherein said thermoplastic polymer particles are selected from the group consisting of polyethylene, polystyrene, polymethyl(meth)acrylate, polyethyl(meth)acrylate, polyvinylchloride, polyvinylidenechloride, polyacrylonitrile and polyvinylcarbazole and copolymers thereof.
- A heat sensitive imaging element according to any of claims 1 to 4 wherein said compound capable of converting light into heat is selected from the group consisting of an infrared absorbing dye, carbon black, a metal boride, a metal carbide, a metal nitride, a metal carbonitride and a conductive polymer dispersion.
- A heat sensitive imaging element according to any of claims 1 to 5 wherein said lithographic base is anodized aluminum or comprises a flexible support having thereon a cross-linked hydrophilic layer.
- A heat sensitive imaging element according to any of claims 1 to 6 wherein said image forming layer comprises a cross-linking agent.
- A heat sensitive imaging element according to any of claims 1 to 7 wherein said compound capable of converting light to heat is present in said image forming layer.
- A method for obtaining a lithographic printing plate comprising the steps of:(a) image-wise or information-wise exposing to light or heat an imaging element according to any of claims 1 to 8,(b) developing said exposed imaging element with an aqueous alkaline developing solution in order to remove the unexposed areas and thereby form a lithographic printing plate.
- A method for obtaining a lithographic plate according to claim 9 wherein said exposed and developed imaging element is baked at a temperature between 100°C and 230°C for a period of 40 minutes to 5 minutes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19970200832 EP0800928B1 (en) | 1996-04-09 | 1997-03-20 | A heat sensitive imaging element and a method for producing lithographic plates therewith |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96200972 | 1996-04-09 | ||
EP96200972 | 1996-04-09 | ||
EP19970200832 EP0800928B1 (en) | 1996-04-09 | 1997-03-20 | A heat sensitive imaging element and a method for producing lithographic plates therewith |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0800928A1 EP0800928A1 (en) | 1997-10-15 |
EP0800928B1 true EP0800928B1 (en) | 1999-07-28 |
Family
ID=26142686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970200832 Expired - Lifetime EP0800928B1 (en) | 1996-04-09 | 1997-03-20 | A heat sensitive imaging element and a method for producing lithographic plates therewith |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0800928B1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0864420B2 (en) * | 1997-03-11 | 2005-11-16 | Agfa-Gevaert | Heat-sensitive imaging element for making positive working printing plates |
US6124425A (en) * | 1999-03-18 | 2000-09-26 | American Dye Source, Inc. | Thermally reactive near infrared absorption polymer coatings, method of preparing and methods of use |
EP1038667B1 (en) | 1999-03-25 | 2005-07-27 | Dainippon Ink And Chemicals, Inc. | Lithographic printing plate and image forming method |
US6558787B1 (en) | 1999-12-27 | 2003-05-06 | Kodak Polychrome Graphics Llc | Relation to manufacture of masks and electronic parts |
EP1344644B1 (en) * | 2002-03-13 | 2007-07-25 | FUJIFILM Corporation | Lithographic printing plate precursor |
US7358032B2 (en) | 2002-11-08 | 2008-04-15 | Fujifilm Corporation | Planographic printing plate precursor |
JP2004226472A (en) * | 2003-01-20 | 2004-08-12 | Fuji Photo Film Co Ltd | Lithographic printing original plate |
US7348126B2 (en) | 2004-04-27 | 2008-03-25 | Agfa Graphics N.V. | Negative working, heat-sensitive lithographic printing plate precursor |
US7195861B2 (en) | 2004-07-08 | 2007-03-27 | Agfa-Gevaert | Method for making a negative working, heat-sensitive lithographic printing plate precursor |
US7354696B2 (en) | 2004-07-08 | 2008-04-08 | Agfa Graphics Nv | Method for making a lithographic printing plate |
US7425405B2 (en) | 2004-07-08 | 2008-09-16 | Agfa Graphics, N.V. | Method for making a lithographic printing plate |
JP4458984B2 (en) * | 2004-08-16 | 2010-04-28 | 富士フイルム株式会社 | Planographic printing plate precursor |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1424008A (en) | 1963-12-05 | 1966-01-07 | Gevaert Photo Prod Nv | Method of recording information using heat and pressure sensitive material |
GB1208414A (en) | 1966-10-24 | 1970-10-14 | Agfa Gevaert Nv | Improvements relating to thermo recording |
GB1419512A (en) | 1972-01-07 | 1975-12-31 | Kodak Ltd | Presensitised lithographic material |
US3971660A (en) | 1974-04-04 | 1976-07-27 | Eastman Kodak Company | Lithographic printing plate comprising hydrophilic layer of polyvinylacetate crosslinked with tetraethylorthosilicate |
FR2300354A1 (en) | 1975-02-04 | 1976-09-03 | Kodak Pathe | Presensitised lithographic printing plates - with layer of photosensitive P-aminobenzene diazonium salt with long chain alkyl or alkoxy gp. on the amino atom |
FR2400221A1 (en) | 1977-08-09 | 1979-03-09 | Kodak Pathe | PHOTOSENSITIVE DIAZONIUM COMPOUND USEFUL, IN PARTICULAR, FOR PREPARING LITHOGRAPHIC PRINTING BOARDS, PROCESS FOR PREPARING THIS COMPOUND AND PLATE PRESENSITIZED WITH THIS COMPOUND |
US4708925A (en) | 1984-12-11 | 1987-11-24 | Minnesota Mining And Manufacturing Company | Photosolubilizable compositions containing novolac phenolic resin |
EP0514490B1 (en) | 1990-02-07 | 1996-06-26 | Board Of Regents, The University Of Texas System | Allelic association of the human dopamine (d2) receptor gene in compulsive disorders such as alcoholism |
GB9110417D0 (en) | 1991-05-14 | 1991-07-03 | Du Pont Howson Ltd | Improvements in or relating to the formation of images |
GB2273366B (en) | 1992-11-18 | 1996-03-27 | Du Pont | Forming images on radiation-sensitive plates |
EP0601240B1 (en) | 1992-12-11 | 1999-04-14 | Agfa-Gevaert N.V. | Water developable diazo based lithographic printing plate |
EP0620502B1 (en) | 1993-04-05 | 1999-03-17 | Agfa-Gevaert N.V. | A lithographic base and a method for making a lithographic printing plate therewith |
DE69323997T2 (en) | 1993-04-05 | 1999-10-14 | Agfa Gevaert Nv | Lithographic support and method for producing a lithographic printing form |
EP0619524B1 (en) | 1993-04-05 | 1999-08-04 | Agfa-Gevaert N.V. | A lithographic base and a method for making a lithographic printing plate therewith |
US5340699A (en) | 1993-05-19 | 1994-08-23 | Eastman Kodak Company | Radiation-sensitive composition containing a resole resin and a novolac resin and use thereof in lithographic printing plates |
-
1997
- 1997-03-20 EP EP19970200832 patent/EP0800928B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0800928A1 (en) | 1997-10-15 |
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