Appeal No. 2002-1838
Application 09/631,765
line 3 through page 10, line 9 of the specification. At page 8,
lines 6 and 7, appellants disclose that the impregnating compound
"has a paste or caulk-like consistency." The terminology "paste" is
not otherwise defined in the specification. The second element, the
"rigid member with a supporting base", is disclosed as preferably
formed of cardboard to which the foam pad is adhesively attached.
See page 6, lines 26 through 28 of the specification and Figure 2,
element 16. Cardboard having a thickness of one eighth of an inch
(1/8") has been determined to be sufficient to furnish rigidity to
and support the porous member. See page 7, lines 12 through 15 of
the specification.
Accordingly, claim 17 embraces a porous material, preferably
a polyurethane foam, supported by a supporting base, preferably
cardboard, and preferably adhesively attached to the base and a
rigid member supporting the foam. The porous member is impregnated
with a paste which comprises a silicone copolymer but claim 17 does
not describe the component comonomers.
We agree with the examiner that Latone discloses an assembly
for cleaning toner resins from components of a printing device. The
assembly comprises a porous member (see element 103 of the
"cleaning roll" depicted in Figure 4) and a rigid member with a
supporting base on which said porous member is mounted (see element
101 in Figure 4). Latone also describes the preferred material for
the porous member as "urethane foam" (see column 5, lines 3 through
5
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