Appeal No. 2002-1240
Application 09/247,550
this analysis that a disc-shroud gap of less than 0.5 mm can
effectively restrain occurrence of flutter. See page 9 of
Appellants’ specification.
Independent claim 1 present in the application is reproduced
as follows:
1. A magnetic disc unit comprising a rotating disc type
magnetic disc, a head for recording and reproducing data to and
from said magnetic disc, and a head support mechanism for
supporting said head, a carriage arm linked to said head support
mechanism, and a shroud surrounding an end surface of an outer
periphery of said magnetic disc, except a part wherein said
carriage arm is inserted, wherein a gap between the end face of
the outer periphery of said magnetic disc and the shroud is set
in a range which is greater than 0.1 mm but not greater than 0.6
mm.
References
The reference relied on by the Examiner is as follows:
Iida et al. (Iida) 4,660,110 Apr. 21, 1987
Rejections at Issue
Claims 1, 2, 6, 7, 11 and 12 stand rejected under 35 U.S.C.
§ 102 as being anticipated by Iida. Claims 2 through 5, 7
through 10 and 12 through 15 stand rejected under 35 U.S.C. § 103
as being unpatentable over Iida.
3
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