公开(公告)号：JPH10241333A

公开(公告)日：1998-09-11

申请号：JP3260198

申请日：1998-02-16

Applicant: IBM

Inventor： BLACHEK MICHAEL DAVID ,  SMITH GORDON JAMES

IPC: G11B23/50 ,  G11B5/012 ,  G11B5/39 ,  G11B5/48 ,  G11B5/54 ,  G11B5/58 ,  G11B5/82 ,  G11B5/84 ,  G11B19/04

Abstract: PROBLEM TO BE SOLVED: To eliminate irregular parts which are made high of a magnetic data storage disk by bringing an MR(magneto-resistance) head into contact with the irregular parts which are relatively soft in order to errode the irregular parts by friction. SOLUTION: The irregular part 245 which is made high of the magnetic storage disk is removed by eroding the irregulart part by friction while bringing the MR head into contact with the irregular part which is relatively soft. Here, the head can be brought into contact with the irregular part by being prolonged in the direction of the disk while selectively increasing the read bias current of the MR head. An advantage removing such an incomplete irregular part is that a thermal asperity to be generated when the head is unexpectedly brought into contact with the irregular part which is made high at the time of reading data is easily eliminated.

公开(公告)号：DE69805462T2

公开(公告)日：2003-01-02

申请号：DE69805462

申请日：1998-01-16

Applicant: IBM

Inventor： BLACHEK MICHAEL DAVID ,  SMITH GORDON JAMES

IPC: G11B23/50 ,  G11B5/012 ,  G11B5/39 ,  G11B5/48 ,  G11B5/54 ,  G11B5/58 ,  G11B5/82 ,  G11B5/84 ,  G11B19/04 ,  G11B5/00

Abstract: Raised irregularities in a magnetic data storage disk are removed by contacting an MR head with the relatively softer irregularity to abrasively erode the irregularity. The MR head may be brought into contact with the irregularity, for example, by selectively increasing read bias current of the head to expand the head toward the disk. Advantageously, removal of such imperfections helps eliminate thermal asperities created when the head inadvertently contacts raised irregularities during reading of data.

公开(公告)号：DE69805462D1

公开(公告)日：2002-06-27

申请号：DE69805462

申请日：1998-01-16

Applicant: IBM

Inventor： BLACHEK MICHAEL DAVID ,  SMITH GORDON JAMES

IPC: G11B23/50 ,  G11B5/012 ,  G11B5/39 ,  G11B5/48 ,  G11B5/54 ,  G11B5/58 ,  G11B5/82 ,  G11B5/84 ,  G11B19/04 ,  G11B5/00

Abstract: Raised irregularities in a magnetic data storage disk are removed by contacting an MR head with the relatively softer irregularity to abrasively erode the irregularity. The MR head may be brought into contact with the irregularity, for example, by selectively increasing read bias current of the head to expand the head toward the disk. Advantageously, removal of such imperfections helps eliminate thermal asperities created when the head inadvertently contacts raised irregularities during reading of data.