Dynamic magnetic information storage or retrieval – Head – Head surface structure
Patent
1993-10-18
1998-07-14
Levy, Stuart S.
Dynamic magnetic information storage or retrieval
Head
Head surface structure
360129, G11B 5187
Patent
active
057813833
ABSTRACT:
An improved magnetic head is disclosed for stable pole tip to tape contact pressure despite head wear and tape tension variations. A magnetic head which contacts the magnetic tape comprises a ferromagnetic body. A recess is provided in this ferromagnetic body. A ferromagnetic core has pole tips which are located in the recess and which are arranged for contact with the magnetic tape. A non-magnetic material is arranged along each side of the magnetic core pole tips in the recess. Relative hardnesses of the ferromagnetic body, ferromagnetic core pole tips, and nonmagnetic material are chosen so that as the tape wears away on contact surfaces of the magnetic core pole tips, non-magnetic material, and ferromagnetic body, the core pole tips protrude relative to adjacent portions of the ferromagnetic body and the non-magnetic material so that the tape rides on the protruding pole tips of the core. A radius of curvature at the contact surface of the magnetic core pole tips prior to wearing of the pole tips is chosen such that it is smaller than a natural radius of bending of the tape.
REFERENCES:
patent: 3526885 (1970-09-01), Anderson et al.
patent: 3983622 (1976-10-01), Schneider et al.
patent: 4589043 (1986-05-01), Grundtner
patent: 4839959 (1989-06-01), Mersing
patent: 4868697 (1989-09-01), McClure
patent: 4875129 (1989-10-01), Favrou et al.
patent: 4888657 (1989-12-01), Lacey et al.
patent: 4949208 (1990-08-01), Milo et al.
patent: 5012572 (1991-05-01), Matsuzawa et al.
patent: 5031064 (1991-07-01), Ashikawa et al.
patent: 5140483 (1992-08-01), Koga et al.
Patent Abstracts of Japan, vol. 12, No. 290, Aug. 9, 1988, Yoshinori Izukura, "Magnetic Head".
Levy Stuart S.
Tandberg Data Storage AS
Watkins Kevin M.
LandOfFree
Magnetic head for stable tip to tape contact pressure despite he 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 head for stable tip to tape contact pressure despite he, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic head for stable tip to tape contact pressure despite he will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1888657