EP 0756743 A1 19970205 - IMPROVED DISK SUBSTRATE
Title (en)
IMPROVED DISK SUBSTRATE
Title (de)
VERBESSERTER PLATTENTRÄGER
Title (fr)
SUBSTRAT DE DISQUE AMELIORE
Publication
Application
Priority
- US 9504325 W 19950418
- US 23004494 A 19940419
Abstract (en)
[origin: WO9528703A1] This invention relates to a disk substrate for use in a disk drive, the disk substrate consisting essentially of partially stabilized zirconia and having a surface roughness (Ra) of no more than 10 angstroms.
IPC 1-7
IPC 8 full level
C04B 35/563 (2006.01); C04B 35/48 (2006.01); C04B 41/91 (2006.01); G11B 5/62 (2006.01); G11B 5/73 (2006.01); G11B 5/84 (2006.01)
CPC (source: EP KR US)
G11B 5/64 (2013.01 - KR); G11B 5/73911 (2019.05 - EP US); G11B 5/8404 (2013.01 - EP US); G11B 2220/20 (2013.01 - KR); Y10S 428/90 (2013.01 - KR)
Designated contracting state (EPC)
AT BE CH DE DK FR GB IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9528703 A1 19951026; CA 2188150 A1 19951026; CN 1147312 A 19970409; EP 0756743 A1 19970205; JP H09512127 A 19971202; KR 970702550 A 19970513
DOCDB simple family (application)
US 9504325 W 19950418; CA 2188150 A 19950418; CN 95192629 A 19950418; EP 95916245 A 19950418; JP 52702395 A 19950418; KR 19960705898 A 19961016