公开(公告)号：JPH02226564A

公开(公告)日：1990-09-10

申请号：JP4549689

申请日：1989-02-28

Applicant: IBM JAPAN

Inventor： KUBO MASAKAZU ,  MASUDA YOSHIMI ,  NAKAGAWA YUZO

IPC: G11B19/20 ,  G11B21/22

Abstract: PURPOSE:To separate a lock member without increasing the thickness and weight of a disk device by increasing the rotating speed of a disk driving motor for a prescribed time after a power source is applied, and releasing the lock of an actuator by increasing an air flow force by the rotation of a disk. CONSTITUTION:A magnetic hard disk 16 is turned at speed higher than that in a write or readout operation by a microprocessor, etc., provided with a timer means, etc., for the prescribed time after the power source is applied. Thereby, the air flow force A functioning on a wing 70 can be increased compared with a bias force B applied on the wing 70 interlocking with the lock member 68 and placing a head 30 in a landing area 26 by locking the actuator 32. And the member 68 is separated via the wing 70, and the lock of the actuator 32 by the member 68 is released, and the head 30 can be moved to a data recording area 22, thereby, the separation of the lock member can be performed without increasing the thickness and the weight of the disk device.