Magnetic recording/reproducing apparatus using a GMR head

Details Magnetic recording/reproducing apparatus using a GMR head Magnetic recording/reproducing apparatus using a GMR head

2006-01-24

2006-01-24

Heinz, A. J. (Department: 2653)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

06989974

ABSTRACT:
A highly reliable magnetic recording/reproducing apparatus is provided. In the magnetic recording/reproducing apparatus, a spin-valve film is used as a magnetic sensor element for detecting magnetic signals. By defining the corrosion potential of this spin-valve film, and further by specifying the residual magnetization of a magnetic recording medium used as well as the product of the residual magnetization and the thickness of the magnetic layer to a range that is numerically optimal, the occurrence of corrosion on the surface of a magnetoresistive head that contacts the medium is prevented, and the occurrence of electromagnetic discharge is avoided. Further, by numerically specifying the surface resistivity of the metal magnetic thin film of the magnetic recording medium, as well as the roughness of the surface on which the metal magnetic thin film is formed, electrostatic discharge preventing effects and wear resistance are improved.

REFERENCES:
patent: 5766743 (1998-06-01), Fujikata et al.
patent: 6764778 (2004-07-01), Saito et al.

Affiliated with

Also associated with

Rating

Magnetic recording/reproducing apparatus using a GMR head 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 recording/reproducing apparatus using a GMR head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording/reproducing apparatus using a GMR head will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3574900