Hard disk drive

Details Hard disk drive Hard disk drive

1997-02-10

1998-10-20

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record medium

Disk

G11B 582

Patent

active

058255966

ABSTRACT:
A hard disk drive includes a magnetic disk used as a magnetic recording medium, and a magnetic head for applying magnetic fields to the disk to record data and for detecting magnetic fields from the disk to reproduce data. During 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. At this time, the head is brought into contact with the disk, with a head contact width in the track width direction. The disk has a surface texture which presents a single peak amplitude value falling in a range of being equal to or more than 0.5 nm, and equal to or less than the recording bit length, when the surface texture is factorized into frequency compositions by means of Fourier transform. A wave length for providing the peak amplitude value falls in a range of being ten times the recording bit length or more, and equal to or less than the head contact width.

REFERENCES:
patent: 4762742 (1988-08-01), Sonoda et al.
patent: 5302434 (1994-04-01), Doerner et al.
patent: 5307223 (1994-04-01), Doerner et al.
patent: 5353182 (1994-10-01), Nakamura et al.

Affiliated with

Also associated with

Rating

Hard disk drive does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hard disk drive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hard disk drive will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-251564