EP 1568803 A2 20050831 - Electroforming method for producing objects with a high degree of accuracy
Title (en)
Electroforming method for producing objects with a high degree of accuracy
Title (de)
Elektroformungsverfahren zur Herstellung von Gegenständen mit hoher Genauigkeit
Title (fr)
Procédé d'électroformage pour la fabrication d'objets avec un haut degré de précision
Publication
Application
Priority
NL 1025582 A 20040226
Abstract (en)
The present invention provides a method for producing, by electroplating, a metal object which has at least one continuous opening, which opening is delimited by metal dykes (16). Instead of applying complete islands of electrically insulating material to the electroforming die (10), only a boundary (20) of electrically insulating material is applied, this boundary corresponding to the periphery of the opening that is to be formed in the product. Therefore, a part (22) of the electroforming die is also uncovered within the boundary (20). During the deposition of metal from an electroplating bath on the uncovered electrically conductive parts (14, 22) of the die, metal overgrowth takes place over the boundary (22), with the result that the periphery of the opening that is to be formed is accurately defined. The metal growth (24) which has grown from the central region (22) is removed from the semi-finished product in order to produce the finished product with a continuous opening.
IPC 1-7
IPC 8 full level
C25D 1/08 (2006.01)
CPC (source: EP)
C25D 1/08 (2013.01)
Citation (applicant)
- JP H02267293 A 19901101 - SEIKO EPSON CORP
- JP H09260241 A 19971003 - TOSHIBA CORP
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1568803 A2 20050831; EP 1568803 A3 20080402; EP 1568803 B1 20100602; AT E469995 T1 20100615; DE 602005021569 D1 20100715; NL 1025582 C2 20050829
DOCDB simple family (application)
EP 05075356 A 20050210; AT 05075356 T 20050210; DE 602005021569 T 20050210; NL 1025582 A 20040226