Appeal No. 1998-0546
Application No. 08/560,507
connection either to ground or the source of negative
potential.
As evidence that it would have been obvious to form
Yoshikawa's conductive plastic housing of carbon-doped plastic
having a volume resistivity of less than 10 ohm-cms, the8
examiner relies on Hasumi, which discloses a storage container
for integrated circuits. Hasumi explains that whereas prior
art containers formed of synthetic resin have high resistivity
and thus experience static problems (Trans. at 1-2), Hasumi's
containers are made of carbon-doped styrene, polyethylene, or
4 10
polypropylene having a volume resistivity of from 10 to 10
ohm-cms, which is said to be suitably protective (Trans. at 3,
lines 8-22). The portion of this range under 10 falls within8
the claimed range.
Appellants' complaint that one skilled in the art would
not have looked to Hasumi because it has "nothing at all to do
with a container for untransferred developer material and
debris" (Brief at 5) is unconvincing for two reasons. First,
because the only reference to collecting untransferred
developer material and debris appears in the preamble's
statement of intended use, which in our view is not entitled
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