EP 1542871 A1 20050622 - METHOD FOR MAKING PRINTING PLATE BY INKJET DEPOSITION ON POSITIVE-WORKING MEDIA
Title (en)
METHOD FOR MAKING PRINTING PLATE BY INKJET DEPOSITION ON POSITIVE-WORKING MEDIA
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER DRUCKPLATTE DURCH TINTENSTRAHLAUFTRAG AUF POSITIV ARBEITENDE MEDIEN
Title (fr)
PROCEDE DE FABRICATION DE CLICHES PAR DEPOT PAR JET D'ENCRE SUR DES SUPPORTS AVEC COPIE POSITIVE
Publication
Application
Priority
- CA 0301040 W 20030709
- CA 2393320 A 20020715
Abstract (en)
[origin: WO2004007200A1] An inkjet method is used to make a negative working offset lithographic printing master by imagewise application of liquid inkjet droplets that form a mask on a layer of positive-working radiation imageable material pre-coated on a hydrophilic lithographic base. The masked layer is then subjected to a developer and developed. After development, only the masked areas of the positive working imageable material remain. Since this material is hydrophobic the resulting imaged layer on the hydrophilic lithographic base may be employed as a wet offset lithographic master. Since the image that is printed by the printing master coincides directly with the image printed by the inkjetting process on the imageable material, the method is inherently negative-working. By the method of the present invention positive-working radiation imageable media is therefore employed to make a negative-working printing master. The combination of positive working radiation-imageable medium and masking fluid of this invention may be used in the fully on-press fabrication of a negative working lithographic master, which may optionally also be made on a re-usable base.
IPC 1-7
IPC 8 full level
B41C 1/10 (2006.01)
CPC (source: EP)
B41C 1/1066 (2013.01); B41C 1/1008 (2013.01); B41C 2210/02 (2013.01); B41C 2210/04 (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)
See references of WO 2004007200A1
Designated contracting state (EPC)
DE
DOCDB simple family (publication)
WO 2004007200 A1 20040122; AU 2003250648 A1 20040202; CA 2393320 A1 20040115; EP 1542871 A1 20050622
DOCDB simple family (application)
CA 0301040 W 20030709; AU 2003250648 A 20030709; CA 2393320 A 20020715; EP 03763534 A 20030709