Global Patent Index - EP 0093961 B1

EP 0093961 B1 19870610 - PROCESS FOR THE ELECTROCHEMICAL GRAINING OF ALUMINIUM FOR PRINTING PLATE SUPPORTS

Title (en)

PROCESS FOR THE ELECTROCHEMICAL GRAINING OF ALUMINIUM FOR PRINTING PLATE SUPPORTS

Publication

EP 0093961 B1 19870610 (DE)

Application

EP 83104146 A 19830428

Priority

DE 3217499 A 19820510

Abstract (en)

[origin: US4468295A] Disclosed is a process for electrochemically roughening aluminum or alloys thereof, in an aqueous electrolyte, under the action of an alternating current which is generated by superimposing at least two types of alternating current of different frequencies. The materials roughened in this manner are used as supports for radiation-sensitive reproduction coatings in the field of manufacturing offset-printing plates. Also disclosed are roughened aluminum supports and printing plates produced by the above process.

IPC 1-7

C25F 3/04; B41N 1/08

IPC 8 full level

B41N 1/08 (2006.01); B41N 3/03 (2006.01); C25F 3/04 (2006.01)

CPC (source: EP US)

B41N 3/034 (2013.01 - EP US); C25F 3/04 (2013.01 - EP US); Y10S 204/09 (2013.01 - EP US)

Designated contracting state (EPC)

DE FR GB NL

DOCDB simple family (publication)

EP 0093961 A1 19831116; EP 0093961 B1 19870610; AU 1430083 A 19831117; AU 550815 B2 19860410; BR 8302397 A 19840110; CA 1209522 A 19860812; DE 3217499 A1 19831110; DE 3372001 D1 19870716; JP H0568560 B2 19930929; JP S58207374 A 19831202; US 4468295 A 19840828

DOCDB simple family (application)

EP 83104146 A 19830428; AU 1430083 A 19830506; BR 8302397 A 19830509; CA 427269 A 19830503; DE 3217499 A 19820510; DE 3372001 T 19830428; JP 7947283 A 19830509; US 49056783 A 19830502