Appeal No.1999-2236
Application No. 08/408,036
contacting the surface. In particular, a recording medium is said to be provided with a
unique surface topography that enables high speed sliding contact between a
transducer and a rigid disk for extended periods of read/write operation with minimal
wear.
Representative independent claim 1 is reproduced as follows:
1. An information storage device comprising:
a rigid body having an information storage layer with an associated
surface having asperities disposed within a 100-:m2 area and having
tops, in a highest 1.0% of said area, with an average radius of curvature
of at least about 2-:m.
The examiner relies on the following references:
Suzuki et al. (Suzuki) 4,540,618 Sep. 10, 1985
Nakamura et al. (Nakamura) 5,202,810 Apr. 13, 1993
Claims 1-6 and 16-18 stand rejected under 35 U.S.C. § 103 as unpatentable
over Nakamura in view of Suzuki.
Reference is made to the brief and answer for the respective positions of
appellants and the examiner.
OPINION
The examiner takes the position that Nakamura discloses the claimed subject
matter but for the average radius of curvature of the asperities in the top one percent
bearing ratio being no less than 1.5 -:m. The examiner stresses the teaching of
2
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