EP 0093714 A4 19840427 - CONTAMINANT PURGING IN A MAGNETIC DISC DRIVE.
Title (en)
CONTAMINANT PURGING IN A MAGNETIC DISC DRIVE.
Title (de)
BESEITIGUNG VON VERUNREINIGUNGEN IN EINEM MAGNETPLATTENANTRIEB.
Title (fr)
PURGE DES SUBSTANCES CONTAMINANTES DANS UNE UNITE DE DISQUE MAGNETIQUE.
Publication
Application
Priority
US 32133581 A 19811116
Abstract (en)
[origin: WO8301861A1] In a magnetic disc drive (10) including a disc (12) having a magnetic surface and supported for rotation on a spindle (11), a spindle motor (13) for driving the spindle, a transducer head (14), a head support structure (15) for moving the head along the disc surface, and a speed control circuit (22) for controlling the speed of the spindle motor, there is disclosed a method for contaminant purging and head loading. The spindle motor (13) is operated at a speed significantly above the normal operating speed and filtered air is circulated past the head (14) and the disc surface. The head is loaded and caused to fly on the disc surface and the spindle motor speed is then reduced to the normal operating speed.
IPC 1-7
IPC 8 full level
G11B 25/04 (2006.01); G11B 5/60 (2006.01); G11B 17/32 (2006.01); G11B 23/50 (2006.01)
CPC (source: EP)
G11B 5/6005 (2013.01); G11B 23/505 (2013.01)
Citation (search report)
- [A] US 3609721 A 19710928 - MENELEY WILLIAM E
- [A] PATENTS ABSTRACTS OF JAPAN, vol. 5, no. 84 (P-64)(756), June 2, 1981 & JP - A - 56 29 874 (HITACHI SEISAKUSHO K.K.) (March 25, 1981)
Designated contracting state (EPC)
CH DE FR GB LI SE
DOCDB simple family (publication)
WO 8301861 A1 19830526; BR 8207975 A 19831004; DE 8237134 U1 19831124; EP 0093714 A1 19831116; EP 0093714 A4 19840427; GB 2121591 A 19831221; GB 8317983 D0 19830803; JP S58501880 A 19831104
DOCDB simple family (application)
US 8200387 W 19820401; BR 8207975 A 19820401; DE 8237134 U 19820401; EP 82901281 A 19820401; GB 8317983 A 19820401; JP 50141982 A 19820401