Claims
- 1. A heat-sensitive imaging element for providing a lithographic printing plate, comprising a lithographic support with a hydrophilic surface and a top layer wherein said top layer or a layer adjacent to said top layer comprises a compound capable of converting light into heat, characterized in that said top layer further comprises a polymer containing aryldiazosulphonate units.
- 2. A heat-sensitive imaging element according to claim 1 wherein the amount of aryldiazosulphonate units in said polymer is between 10 mol % and 60 mol %.
- 3. A heat-sensitive imaging element according to claim 1 wherein said polymer with aryldiazosulphonate units is a copolymer with a monomer selected from the group consisting of (meth)acrylic acid or esters thereof, (meth)acrylamide, acrylonitrile, vinylacetate, vinylchloride, vinylidene chloride, styrene, alpha-methyl styrene.
- 4. A heat-sensitive imaging element according to claim 1 wherein said aryldiazosulphonate units are substituted aryldiazosulphonate units.
- 5. A heat-sensitive imaging element according to claim 1 wherein the compound capable of converting light into heat is a infrared absorbing component.
- 6. A heat-sensitive imaging element according to claim 5 wherein said infrared absorbing component is an infra-red absorbing dye.
- 7. A heat-sensitive imaging element according to claim 5 wherein said infrared absorbing component is an infra-red absorbing pigment.
- 8. A method for providing a lithographic printing plate comprising the following steps:image-wise exposing an imaging element according to claim 1; developing said exposed imaging element with plain water or an aqueous solution.
- 9. A method according to claim 8 further comprising overall UV-exposing the developed imaging element.
- 10. A method for printing comprising the following steps:exposing an imaging element according to claim 1; mounting the exposed imaging element on a press; applying ink and fountain on the imaging element; and printing from said imaging element.
Priority Claims (1)
Number |
Date |
Country |
Kind |
98201767 |
May 1998 |
EP |
|
Parent Case Info
The application claims the benefit of U.S. Provisional Application Ser. No. 60/092,558 filed Jul. 13, 1998.
US Referenced Citations (7)
Foreign Referenced Citations (4)
Number |
Date |
Country |
0 507 008 A1 |
Oct 1992 |
EP |
0 771 645 A1 |
May 1997 |
EP |
1195841 |
Jun 1970 |
GB |
WO 9746385 |
Dec 1997 |
WO |
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/092558 |
Jul 1998 |
US |