公开(公告)号：JP2002251845A

公开(公告)日：2002-09-06

申请号：JP2001045715

申请日：2001-02-21

Applicant: IBM

Inventor： YUKI TOSHIHIKO ,  TSUJINO HITOSHI ,  ISHIKAWA ATSUSHI ,  KANEDA NAOAKI

IPC: G11B21/02 ,  G11B5/55 ,  G11B5/56

Abstract: PROBLEM TO BE SOLVED: To provide a disk drive in which a head assembly can efficiently, reliably and highly accurately balanced, and to provide a head assembly or the like. SOLUTION: In a hard disk drive, a head assembly 13 to drive a magnetic head 33 for reading/writing data from/in a recording disk has a constitution such that the sleeve 21 of a pivot member 20 which swivelably supports the head assembly 13 is equipped with a flange part overhanging towards the circumferential side and flat surface parts 41A and 41B for adjusting the balance of the center of gravity of the head assembly 13 are formed on the circumferential surface of the flange part.

公开(公告)号：JP2003108314A

公开(公告)日：2003-04-11

申请号：JP2001286860

申请日：2001-09-20

Applicant: IBM

Inventor： SHIMADA SHOGO ,  YAMADA HIDEJI ,  ANDO HARUO ,  YUKI TOSHIHIKO

IPC: G06F3/06 ,  G11B20/10

Abstract: PROBLEM TO BE SOLVED: To extend a substantial time-out period for writing in an environment where shock and vibration are applied, so that the occurrence of unnecessary time-out is minimized. SOLUTION: After a sector buffer has stored write data and a time delay Td has elapsed, a command complete is issued.