EP 0269851 B1 19930609 - ALUMINIUM OR ALUMINIUM ALLOY BASED CARRIER MATERIALS FOR OFFSET PRINTING PLATES, AND PROCESS FOR MANUFACTURING THEM
Title (en)
ALUMINIUM OR ALUMINIUM ALLOY BASED CARRIER MATERIALS FOR OFFSET PRINTING PLATES, AND PROCESS FOR MANUFACTURING THEM
Publication
Application
Priority
DE 3637764 A 19861106
Abstract (en)
[origin: US4853093A] There is disclosed a plate-, foil- or web-shaped support material for offset printing plates, made of mill-finished, mechanically and/or chemically or mechanically and electrochemically grained aluminum or an aluminum alloy, which has been anodized in aqueous-alkaline solutions. The support material of the invention shows a reflectometer value, at an angle of incidence of 60 DEG (measured according to DIN 67 530; 1982), of greater than 5, an abrasion of the oxide layer of less than 0.5 g/m2 and a resistance to alkali of greater than 140 s. Also disclosed is a process for the manufacture of the support material, in which an anodic oxidation is carried out in an electrolyte having a pH greater than or equal to 12.5, at a voltage of less than 50 V.
IPC 1-7
IPC 8 full level
B41N 1/08 (2006.01); B41N 3/03 (2006.01); C23F 1/02 (2006.01); C25D 11/04 (2006.01); C25D 11/08 (2006.01); C25F 3/04 (2006.01)
CPC (source: EP US)
B41N 3/034 (2013.01 - EP US); C25D 11/08 (2013.01 - EP US); Y10S 205/921 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 0269851 A2 19880608; EP 0269851 A3 19890719; EP 0269851 B1 19930609; DE 3637764 A1 19880511; DE 3786149 D1 19930715; JP S63134292 A 19880606; US 4853093 A 19890801
DOCDB simple family (application)
EP 87115715 A 19871027; DE 3637764 A 19861106; DE 3786149 T 19871027; JP 27841387 A 19871105; US 11477187 A 19871030