EP 1244548 A2 20021002 - HEAT-SENSITIVE IMAGING ELEMENT FOR PROVIDING LITHOGRAPHIC PRINTING PLATES
Title (en)
HEAT-SENSITIVE IMAGING ELEMENT FOR PROVIDING LITHOGRAPHIC PRINTING PLATES
Title (de)
WÄRMEEMPFINDLICHES BILDAUFZEICHNUNGSELEMENT ZUR HERSTELLUNG LITHOGRAPHISCHER DRUCKPLATTEN
Title (fr)
ELEMENT THERMOSENSIBLE POUR PREPARER UNE PLAQUE D'IMPRESSION LITHOGRAPHIQUE
Publication
Application
Priority
- US 0032841 W 20001204
- US 45415199 A 19991203
- US 64460000 A 20000823
Abstract (en)
[origin: WO0139985A2] An imaging member, such as a negative-working printing plate or on-press cylinder, can be prepared using a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic polymer that comprises recurring units comprising quaternary ammonium carboxylate groups. In a preferred embodiment, the quaternary ammonium carboxylate groups include at least one substituted -alkylene (C1-C3)-phenyl group. The imaging member can also include an infrared radiation sensitive material to provide added sensitivity to heat that can be supplied by laser irradiation in the IR region. The heat-sensitive polymer is considered "switchable" in response to heat, and provides a lithographic image without wet processing.
IPC 1-7
IPC 8 full level
B41C 1/10 (2006.01); B41M 5/26 (2006.01); B41M 5/36 (2006.01); B41N 1/14 (2006.01); G03F 7/00 (2006.01); G03F 7/004 (2006.01); G03F 7/033 (2006.01)
CPC (source: EP)
B41C 1/1041 (2013.01); B41M 5/368 (2013.01)
Citation (search report)
See references of WO 0139985A2
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
WO 0139985 A2 20010607; WO 0139985 A3 20011108; AU 1942001 A 20010612; BR 0016070 A 20030225; DE 60011675 D1 20040722; DE 60011675 T2 20050707; DE 60023197 D1 20060223; DE 60023197 T2 20060706; EP 1244548 A2 20021002; EP 1244548 B1 20040616
DOCDB simple family (application)
US 0032841 W 20001204; AU 1942001 A 20001204; BR 0016070 A 20001204; DE 60011675 T 20001204; DE 60023197 T 20001204; EP 00982378 A 20001204