Magnetic disk unit having magnetic disks and a magnetic head wit

Details Magnetic disk unit having magnetic disks and a magnetic head wit Magnetic disk unit having magnetic disks and a magnetic head wit

1992-12-02

1994-10-04

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 9801, 360135, 428694R, 428900, 427128, 427129, 156645, G11B 548, G11B 5012, G11B 582, B05D 512

Patent

active

053531825

ABSTRACT:
A magnetic disk includes a non-magnetic substrate with a surface processed layer having fine irregularities formed at least on a main surface thereof, and at least a thin film magnetic film and a protective film formed in that order on the non-magnetic substrate in such a manner that the fine irregularities are duplicated thereof. The surface of the surface processed layer of the non-magnetic substrate has protrusions whose surfaces are made flat and a configuration which exhibits a three-dimensional bearing curve in which the bearing ratio at a section taken at a depth from the top of the surface which corresponds to the portion of the top portion deformed by the head load during the contact start-stops drive is between 0.1% and 10%. The protrusions formed on the surface processed layer have a height ranging from several nm to several tens of nm. The bearing ratio is a value obtained at a depth of 5 to 10 nm from the top of the protrusions.

REFERENCES:
patent: 4514451 (1985-04-01), Suzuki et al.
patent: 4540618 (1985-09-01), Suzuki et al.
patent: 4670319 (1987-06-01), Katoh et al.
patent: 4680217 (1987-07-01), Kanesaki et al.
patent: 4698251 (1987-10-01), Fukuda et al.
patent: 4720412 (1988-01-01), Katoh et al.
patent: 4762742 (1988-08-01), Sonoda et al.
patent: 4825680 (1989-05-01), Coe et al.
patent: 4900397 (1990-02-01), Werner et al.
patent: 4911967 (1990-03-01), Lazzari
patent: 4943957 (1990-07-01), Sato et al.
patent: 4985306 (1991-01-01), Morizane et al.
patent: 4996622 (1991-02-01), Takatsuki et al.
patent: 5047274 (1991-09-01), Tsuya et al.

Affiliated with

Also associated with

Rating

Magnetic disk unit having magnetic disks and a magnetic head wit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic disk unit having magnetic disks and a magnetic head wit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic disk unit having magnetic disks and a magnetic head wit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-585952