Appeal No. 2004-1287
Application 09/211,410 Page 4
representative claim 6, a silane crosslinking agent, and a metal
oxide filler. See, e.g., column 2, line 37 through column 4, line
17 and column 5, lines 26-36 of Visser.
Law discloses a fuser member wherein the fuser core is
surrounded by an outer layer that can include a silicone polymer
material and a thermally conductive filler including, inter alia,
metal particles including aluminum, and metal oxides. See, e.g.,
column 4, line 54 through column 5, line 12 and column 7, lines
7-29.
According to the examiner, it would have been obvious to one
of ordinary skill in the art at the time of the invention to employ
the conductive aluminum powder of Law in the composite material of
Visser to enhance the conductive properties of the composite
material layer by the added aluminum powder as suggested by Law.
Moreover, the examiner has reasonably determined that the selection
of an aluminum powder size of 25 microns or less on average and an
amount thereof less than about 30 weight percent for use in the
fuser core coating layer of Visser would have been within the
ordinary skill of the art upon routine experimentation to determine
the workable amounts and sizes of such aluminum powder. See In re
Peterson, 315 F.3d 1325, 1330, 65 USPQ2d 1379, 1382 (Fed. Cir.
2003)(“The normal desire of scientists or artisans to improve upon
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