Claims
- 1. A hard disk drive comprising:
- a magnetic disk having a supporting plate and a magnetic film arranged on the supporting plate with a protection film arranged on the magnetic film and used as a magnetic recording medium; and
- a magnetic head for applying a magnetic field to the disk so as to perform recording, and for detecting a magnetic field from the disk so as to perform reproducing;
- wherein during the recording and reproducing, the head is moved relative to the disk so as to define a track, which is a series of a number of recording bits, on the disk,
- wherein the head has a period of time in which the head is brought into contact with the disk, with a head contact width in a width direction of the disk,
- wherein a relationship between a load given to the disk by the head in contact with the disk and a total thickness of the magnetic and protection films is set such that a peak of shearing stress is positioned in the supporting plate with tm+tp.ltoreq.35-p/5, p being the load (mgf), tm being a thickness of the magnetic film (nm) and tp being a thickness of the protection film (nm).
Priority Claims (2)
Number |
Date |
Country |
Kind |
8-025324 |
Feb 1996 |
JPX |
|
8-211151 |
Aug 1996 |
JPX |
|
Parent Case Info
This application is a Division of application Ser. No. 08/797,127 filed on Feb. 10, 1997, now U.S. Pat. No. 5,825,596.
US Referenced Citations (5)
Foreign Referenced Citations (3)
Number |
Date |
Country |
61-294604 |
Dec 1986 |
JPX |
7-29164 |
Jan 1995 |
JPX |
7-121853 |
May 1995 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
797127 |
Feb 1997 |
|