公开(公告)号：DE69602486D1

公开(公告)日：1999-06-24

申请号：DE69602486

申请日：1996-03-26

Applicant: IBM

Inventor： NAKAMURA TAKASHI ,  YONEDA ISAO ,  YOKOE YUJI ,  TSUWAKO KAZUSHI ,  HARAKO FUJIO ,  SUDA KATSUMI ,  NAKAJIMA MICHIO ,  OGASAWARA KENJI

IPC: G11B5/60 ,  G11B19/04 ,  G11B19/20 ,  G11B23/50 ,  G11B21/21 ,  G11B27/36 ,  G11B5/48

Abstract: The present invention provides a disk drive apparatus which detects when a signal transducer head contacts a projection, forming a thermal asperity on the recording surfaces of disks, makes the flying height of the signal transducer head lower by changing the rotation speed from the normal rotation speed in read/write operations or by transforming a suspension having a bimetal structure while said signal transducer head is positioned over the detected projection on the track, and makes the signal transducer head strike against the projection to break the projection.

公开(公告)号：DE69602486T2

公开(公告)日：1999-12-09

申请号：DE69602486

申请日：1996-03-26

Applicant: IBM

Inventor： NAKAMURA TAKASHI ,  YONEDA ISAO ,  YOKOE YUJI ,  TSUWAKO KAZUSHI ,  HARAKO FUJIO ,  SUDA KATSUMI ,  NAKAJIMA MICHIO ,  OGASAWARA KENJI

IPC: G11B5/60 ,  G11B19/04 ,  G11B19/20 ,  G11B23/50 ,  G11B21/21 ,  G11B27/36 ,  G11B5/48

Abstract: The present invention provides a disk drive apparatus which detects when a signal transducer head contacts a projection, forming a thermal asperity on the recording surfaces of disks, makes the flying height of the signal transducer head lower by changing the rotation speed from the normal rotation speed in read/write operations or by transforming a suspension having a bimetal structure while said signal transducer head is positioned over the detected projection on the track, and makes the signal transducer head strike against the projection to break the projection.

公开(公告)号：GB2349734A

公开(公告)日：2000-11-08

申请号：GB0006921

申请日：2000-03-23

Applicant: IBM

Inventor： TSUWAKO KAZUSHI ,  KURAMOTO KENICHI ,  MATSUDA HIROSHI ,  KITAHORI HIROKI

IPC: B65D73/02 ,  B65D85/86 ,  G11B33/14 ,  H05F3/02 ,  H05K9/00 ,  G12B17/02

Abstract: The present invention purposes a hard disk drive having an enclosure 1 including disk construction members. The hard disk drive is configured so as to cover the enclosure 1 with an electric conductor sheet 2. In case of the present invention, by covering the enclosure 1 with the electric conductor sheet 2, ESD is absorbed by the electric conductor sheet even if ESD comes from any direction and thereby, ESD does not pass through the disk construction members stored in the enclosure 1. Therefore, it is possible to realize a structure not damaged due to ESD even if the structure is handled by a general end user.