Appeal No. 1997-2848
Application No. 08/444,106
where, Tp is a pitch of said recording tracks of said
rotatable magnetic recording disk, and Hc is a coercive force
of said magnetic recording disk,
wherein g is selected in the stated range so that the
ring recording head generates a side fringe magnetic field,
which extends beyond said recording track width Tw, to erase a
side-fringe erase region extending outside a selected
recording track in said recording disk without erasing data on
adjacent tracks of said selected recording track.
The Examiner relies on the following prior art:
Koyama et al. (Koyama) 5,168,409 Dec. 01,
1992
Suyama (European) EP0521442 Jan. 07,
1993
Claims 1, 2, 14, and 19-33 stand finally rejected under
35 U.S.C. § 103 as being unpatentable over Koyama in view of
Suyama.
Rather than reiterate the arguments of Appellants and the
Examiner, reference is made to the Briefs and Answer for the 1
respective details.
OPINION
We have carefully considered the subject matter on
appeal, the rejection advanced by the Examiner, the arguments
1The Appeal Brief was filed August 7, 1996. In response
to the Examiner’s Answer dated January 27, 1997, a Reply Brief
was filed February 10, 1997 which was acknowledged and entered
by the Examiner without further comment on May 13, 1997.
3
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