EP 0170045 B1 19880302 - PROCESS FOR THE SIMULTANEOUS ROUGHENING AND CHROME PLATING OF STEEL PLATES AS SUPPORTS FOR LITHOGRAPHIC USES
Title (en)
PROCESS FOR THE SIMULTANEOUS ROUGHENING AND CHROME PLATING OF STEEL PLATES AS SUPPORTS FOR LITHOGRAPHIC USES
Publication
Application
Priority
DE 3424528 A 19840704
Abstract (en)
[origin: US4619742A] A process for producing chromium-plated, steel-based printing plate carriers comprises (A) simultaneously roughening and partially chromium-plating a substrate using alternating current in an electrolyte containing chromium, chloride, sulfate and, if appropriate, strontium ions and then, in the same electrolyte, (B) employing direct current to effect final chromium-plating. The printing plate supports produced in this manner have a uniform surface topography and peak-to-valley height values that are favorable for coating.
IPC 1-7
IPC 8 full level
C25D 5/26 (2006.01); B41N 1/08 (2006.01); B41N 3/00 (2006.01); B41N 3/03 (2006.01); C25D 3/04 (2006.01); C25D 7/00 (2006.01); C25F 3/06 (2006.01)
CPC (source: EP US)
B41N 1/08 (2013.01 - EP US); C25D 3/04 (2013.01 - EP US); C25F 3/06 (2013.01 - EP US); Y10S 205/921 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0170045 A1 19860205; EP 0170045 B1 19880302; DE 3424528 A1 19860109; DE 3561750 D1 19880407; JP S6135289 A 19860219; US 4619742 A 19861028; ZA 854980 B 19860226
DOCDB simple family (application)
EP 85107827 A 19850624; DE 3424528 A 19840704; DE 3561750 T 19850624; JP 14594685 A 19850704; US 75153885 A 19850703; ZA 854980 A 19850702