Appeal No. 1998-1658
Application 08/343,876
We affirm-in-part.
BACKGROUND
The disclosed invention relates to a magnetic recording and
reproducing system. The recording medium has substantially
oblique magnetic anisotropy with a principal axis of magnetic
anisotropy of 10° to 80° from the recording surface. The head is
a Metal-In-Gap (MIG) type ring head with a high saturation
magnetic flux density material only on one side of the gap
portion (a "one-side MIG head"). When the one-side MIG head is
run in a "normal direction," as shown in figure 1A, the high
saturation magnetic flux density material 2 is on the leading gap
edge, the low saturation flux density material 1 is on the
trailing edge, and the principal axis of magnetic anisotropy is
tilted toward the leading gap edge. This arrangement provides
improved recording characteristics.
Claim 1 is reproduced below.2
1. A magnetic recording and reproducing system which
exhibits excellent recording characteristics in recording
media having substantially uniaxial oblique magnetic
anisotropy with respect to a recording surface of said
media, which comprises a recording medium and a recording
and reproducing ring head including a gap portion having a
leading gap edge and a trailing gap edge, said ring head
having a high saturation magnetic flux density material
provided only on one side of said gap portion run in a
normal direction with respect to said magnetic recording
medium, said one side of said gap portion forming said
2 Note that "principle axis" should be "principal axis" in
claims 1 and 8.
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