Title (en)

Production of support for lithographic printing plate.

Title (de)

Herstellung eines Trägers für Flachdruckplatte

Title (fr)

Production d'un support pour plaque d'impression lithographique

Publication

EP 1002644 A3 20040114 (EN)

Application

EP 99203617 A 19991101

Priority

GB 9825043 A 19981116

Abstract (en)

[origin: GB2343681A] A process is provided for the manufacture of a support for a lithographic printing plate precursor, the process comprising treating at least one surface of a metallic substrate with an aqueous solution comprising a salt of a metal from Group IB, IIB, IVA, IVB, VB, VIA, VIB, VIIB or VIII of the Periodic Table whilst applying a constant voltage or constant current. These lithographic printing plate precursors provide plates showing good resistance to abrasion, corrosion, staining and scumming, both on development and on press. Additionally, the plates display excellent coating adhesion in image areas, together with very good exposure latitude and solvent resistance. The metallic substrate preferably is aluminium or an aluminium alloy. The salt may be a salt of Ti, Zr, Hf, Mo, W, V, Mn, Ni, Cu, Zn, Sn, Nb, Ta, Ce, Se, Si, Co or Fe. The solution may additionally contain poly(acrylic acid) or a copolymer of acrylic acid with vinylphosphonic acid. A light sensitive coating may be subsequently applied on the treated surface. The resulting substrate is then exposed and developed. The salt may be part of an anodising bath or the metallic substrate may be immersed in the salt solution after graining and anodising. The solution may also contain aluminium ions. The salt may be included in an anodising bath or applied after graining and anodising.

IPC 1-7

B41C 1/10; B41N 1/08; C25D 11/06; C25D 11/12

IPC 8 full level

G03F 7/00 (2006.01); B41N 3/03 (2006.01); C25D 11/06 (2006.01); C25D 11/08 (2006.01); C25D 11/12 (2006.01); C25D 11/20 (2006.01)

CPC (source: EP)

C25D 11/06 (2013.01); C25D 11/08 (2013.01); C25D 11/12 (2013.01); C25D 11/20 (2013.01)

Citation (search report)

• [X] US 4554216 A 19851119 - MOHR DIETER [DE]
• [A] US 5834129 A 19981110 - DHILLON MAJOR S [US], et al
• [AP] GB 2325891 A 19981209 - AGFA GEVAERT NV [BE]
• [A] GB 2129442 A 19840516 - PILOT PEN CO LTD
• [A] GB 2077295 A 19811216 - EMPRESA NACIONAL ALUMINIO
• [A] EP 0011097 A2 19800528 - GOLDSCHMIDT AG TH [DE]
• [A] EP 0121361 A1 19841010 - KAISER ALUMINIUM CHEM CORP [US]
• [A] WO 9222688 A1 19921223 - ALCAN INT LTD [CA]
• [A] WO 8808046 A1 19881020 - HRADCOVSKY RUDOLF [US]
• [A] US 5607521 A 19970304 - BECH-NIELSEN GREGERS [DK], et al
• [A] US 5587063 A 19961224 - KUHM PETER [DE], et al
• [A] US 5275713 A 19940104 - HRADCOVSKY RUDOLF [US]
• [A] US 4939068 A 19900703 - LAUKE HARALD [DE], et al
• [A] US 4152222 A 19790501 - CHEETHAM GRAHAM [GB], et al
• [A] US 3977948 A 19760831 - MARTINEZ DIONISIO RODRIGUEZ
• [A] US 3892636 A 19750701 - KANEDA KAZUYOSHI, et al
• [A] US 3864219 A 19750204 - DOSCH ROBERT G, et al
• [A] US 5772865 A 19980630 - TANAKA SHIGEMI [JP], et al

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

GB 2343681 A 20000517; GB 9925555 D0 19991229; DE 69935488 D1 20070426; DE 69935488 T2 20071129; EP 1002644 A2 20000524; EP 1002644 A3 20040114; EP 1002644 B1 20070314; GB 9825043 D0 19990113; JP 2000147751 A 20000526

DOCDB simple family (application)

GB 9925555 A 19991029; DE 69935488 T 19991101; EP 99203617 A 19991101; GB 9825043 A 19981116; JP 32138899 A 19991111