Dynamic magnetic information storage or retrieval – Head – Head surface structure
Reexamination Certificate
2006-01-24
2006-01-24
Heinz, A. J. (Department: 2653)
Dynamic magnetic information storage or retrieval
Head
Head surface structure
Reexamination Certificate
active
06989961
ABSTRACT:
A magnetic head includes core blocks having a medium sliding surface formed on one surface of the core blocks, the medium sliding surface having a slender convex curved shape formed along a sliding direction of a recording medium from the upstream side of the sliding direction to the downstream side, and the medium sliding surface having a magnetic gap formed thereon, wherein the medium sliding surface is shaped along a longitudinal direction thereof like a circular arc with a radius of curvature R while being shaped along a width direction like a circular arc with a radius of curvature r, which is smaller than the radius of curvature R, so that the radius of curvature r is continuously reduced with closer distance to the downstream end of the recording medium sliding direction from a vicinity of the magnetic gap, so that by employing the above magnetic head, a long life magnetic head with small damage due to foreign material adhesion as well as small abrasion can be provided.
REFERENCES:
patent: 6271990 (2001-08-01), Kikuiri
patent: 6590741 (2003-07-01), Hasegawa et al.
patent: 62-18812 (1987-02-01), None
patent: 4-289509 (1992-10-01), None
Kawase Kyoichi
Matsui Kazuhiko
Sato Akihiro
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