EP 1295717 A3 20030716 - Heat-sensitive positive-working lithographic printing plate precursor
Title (en)
Heat-sensitive positive-working lithographic printing plate precursor
Title (de)
Wärmeempfindlicher positiv arbeitender Flachdruckplattenvorläufer
Title (fr)
Précurseur de plaque lithographique positive sensible à la chaleur
Publication
Application
Priority
- EP 02102309 A 20020905
- EP 01000495 A 20010924
Abstract (en)
[origin: EP1295717A2] 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.
IPC 1-7
IPC 8 full level
CPC (source: EP)
B41C 1/1008 (2013.01); B41C 1/1016 (2013.01); B41N 1/08 (2013.01); B41C 2210/02 (2013.01); B41C 2210/06 (2013.01); B41C 2210/22 (2013.01); B41C 2210/24 (2013.01); B41C 2210/262 (2013.01)
Citation (search report)
- [X] EP 0913253 A1 19990506 - MITSUBISHI CHEM CORP [JP]
- [XDA] WO 9739894 A1 19971030 - HORSELL GRAPHIC IND LTD [GB], et al
- [X] EP 0938972 A1 19990901 - FUJI PHOTO FILM CO LTD [JP]
- [Y] EP 0855267 A2 19980729 - FUJI PHOTO FILM CO LTD [JP]
- [Y] WO 9808142 A1 19980226 - MINNESOTA MINING & MFG [US]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
EP 1295717 A2 20030326; EP 1295717 A3 20030716; EP 1295717 B1 20070725
DOCDB simple family (application)
EP 02102309 A 20020905