EP 0940266 B1 20020626 - A heat mode sensitive imaging element for making positive working printing plates.
Title (en)
A heat mode sensitive imaging element for making positive working printing plates.
Title (de)
Wärmeempfindliches Aufzeichnungselement zur Herstellung von positiv arbeitenden Flachdruckformen
Title (fr)
Elément thermosensible pour l'enregistrement de l'image pour la fabrication de plaques lithographiques positives
Publication
Application
Priority
- EP 99200294 A 19990202
- EP 98200709 A 19980306
Abstract (en)
[origin: EP0940266A1] According to the present invention there is provided a heat mode imaging element for making a lithographic printing plate having on a lithographic base with a hydrophilic surface a first layer including a polymer, soluble in an aqueous alkaline solution but not in water and less than 5 % by weight versus the polymer, soluble in the aqueous alkaline solution of a hydrophilic polymer and a top layer on the same side of the lithographic base as the first layer which top layer is IR-sensitive and unpenetrable for or insoluble in an alkaline developer wherein said first layer and said top layer may be one and the same layer; characterized in that said top layer contains a compound selected from the group consisting of a polymer in an amount from 30 mg to 500 mg/m<2>, a triaryl methane dye and a phthalocyanine dye.
IPC 1-7
IPC 8 full level
CPC (source: EP)
B41C 1/1016 (2013.01); B41C 2210/02 (2013.01); B41C 2210/06 (2013.01); B41C 2210/14 (2013.01); B41C 2210/22 (2013.01); B41C 2210/24 (2013.01); B41C 2210/262 (2013.01); B41C 2210/266 (2013.01)
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 99200294 A 19990202