Appeal No. 1997-2931
Application 08/237,034
the area between the point where the coating is applied and
the point where excess coating is removed. Applying any or
all of these teachings to the primary references would have
resulted in controlling the corresponding parameters in the
primary references. For example, applying the teachings of
Kuhnel of controlling the tension of the web upstream of the
application roll and/or downstream of the doctor blade would
have resulted in doing exactly the same thing in the primary
references, and would not have resulted in controlling the
speed of the backing roller for the applicator unit relative
to the speed of the backing roller of the doctor blade unit.
It is not apparent to us, and the examiner has not convinced
explained, why the artisan would have provided drive means in
any of the primary references for controlling the speed of one
of the backing surfaces for the applicator and doctor units
relative to the other backing surface, especially when none of
the applied references teach such an arrangement. Kuhnel, in
particular, is deficient in this respect in that it does not
even disclose separate backing surfaces for the applicator and
the doctor units.
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