Appeal No. 1998-1658
Application 08/343,876
leading gap edge in a running direction of said ring head,
thereby to carry out recording and/or reproducing;
wherein said leading gap edge of high saturation
magnetic flux density material has a saturation magnetic
flux density of at least 1.2 times that of a low saturation
magnetic flux density material of said trailing gap edge;
and
wherein a substantial direction of a principle [sic]
axis of said magnetic anisotropy rises by 10-80° from said
recording surface of said recording medium.
The Examiner relies on the following prior art:
Shimizu et al. (Shimizu '178) 4,587,178 May 6, 1986
Okuda et al. (Okuda) 4,953,049 August 28, 1990
Yokoyama et al. (Yokoyama) 5,140,486 August 18, 1992
(filed November 14, 1990)
Shimizu et al. (Shimizu '645) 5,155,645 October 13, 1992
(filed November 13, 1990)
Kobayashi et al. (Kobayashi) 5,212,612 May 18, 1993
(filed February 6, 1991)
Claims 1, 4-6, 8, and 11-13 stand rejected under 35 U.S.C.
§ 103(a) as unpatentable over Shimizu '178 and Kobayashi.
Claims 7 and 14 stand rejected under 35 U.S.C. § 103(a) as
unpatentable over Shimizu '178 and Kobayashi as applied in the
rejection of claim 1, further in view of Yokoyama.
Claims 1, 4-6, 8, and 11-13 stand rejected under 35 U.S.C.
§ 103(a) as unpatentable over Shimizu '178 and Shimizu '645.
Claims 7 and 14 stand rejected under 35 U.S.C. § 103(a) as
unpatentable over Shimizu '178 and Shimizu '645 as applied in the
rejection of claim 1, further in view of Yokoyama.
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