公开(公告)号：JPH10105963A

公开(公告)日：1998-04-24

申请号：JP23813997

申请日：1997-09-03

Applicant: IBM

Inventor： MICHAEL BARENBOIM ,  PETER MICHAEL BAUMGARDT ,  PETER B CRUSCH ,  BENNY MICHAEL HARPER ,  BENJAMIN KARUNI ,  PETER J M KERSTENS ,  HON S SEIN ,  ANDREW CHIN TAM

IPC: B05D3/00 ,  B05D3/06 ,  G11B5/84

Abstract: PROBLEM TO BE SOLVED: To form a texture on a laser disk, and to minimize friction action by adjusting a driving signal to a variable attenuator for the laser beam and controlling the output level of the laser beam. SOLUTION: When a disk drive device is operating, the disk 10 rotates about a center hole 14, and a stratiform air flow is formed, and a magnetic head 12 is slightly separated from the adjacent disk surface 16 for being maintained. Before this rotation stops, the magnetic head 12 is driven near a toroidal area 18 where the surface of disk 10 is textured. When the rotation of this disk is reduced in speed to stop, the textured surface of this area 18 minimizes an influence by friction and static friction generated between the surface of toroidal area 18 and the adjacent surface of the magnetic head 12.