EP 0414189 A1 19910227 - Method of producing aluminum support for printing plate.
Title (en)
Method of producing aluminum support for printing plate.
Title (de)
Verfahren zur Herstellung eines Aluminiumträgers für eine Druckplatte.
Title (fr)
Procédé pour produire un support en aluminium pour une plaque d'impression.
Publication
Application
Priority
JP 21299889 A 19890821
Abstract (en)
A method of producing an aluminum support for a printing plate by electrochemical graining. The aluminum support is soaked in an acid electrolytic liquid of nitric acid or hydrochloric acid in preferred ranges. An alternating current including a tF positive period and a tR negative period is applied between the aluminum support and an opposite electrode, with current reach peak levels in the positive period tF and the negative period tR being reached within the initial range of 0.1-20% of either period.
IPC 1-7
IPC 8 full level
CPC (source: EP)
B41N 3/034 (2013.01); C25F 3/04 (2013.01)
Citation (search report)
- [A] US 4561944 A 19851231 - SASAKI HIROKAZU [JP], et al
- [A] GB 1169234 A 19691029 - PAEHR HANS-WERNER [DE]
Designated contracting state (EPC)
DE NL
DOCDB simple family (publication)
EP 0414189 A1 19910227; EP 0414189 B1 19950301; DE 69017306 D1 19950406; DE 69017306 T2 19950629; JP 2660581 B2 19971008; JP H0379799 A 19910404
DOCDB simple family (application)
EP 90115928 A 19900820; DE 69017306 T 19900820; JP 21299889 A 19890821