Appeal No. 96-3392
Application 08/121,512
the art and what one would be presumed to know with that
background."); Pro-Mold and Tool Co. v. Great Lakes Plastics
Inc., 75 F.3d 1568, 1573, 37 USPQ2d 1626, 1630 (Fed. Cir.
1996) (A suggestion to combine or modify "may come expressly
from the references themselves. It may come from knowledge of
those skilled in the art that certain references, or
disclosures in the references, are known to be of special
interest or importance in the particular field. It may also
come from the nature of a problem to be solved, leading
inventors to look to references relating to possible solutions
to that problem." (Citations omitted.)). A conclusion of
obviousness may be made from common knowledge and common sense
of the person of ordinary skill in the art without any
specific hint or suggestion in a particular reference.
In re Bozek, 416 F.2d 1385, 1390, 163 USPQ 545, 549 (CCPA
1969). Appellants have not provided any reasons why it would
have been nonobvious to one of ordinary skill in the image
forming art to apply the bias application timing control
device of Kurokawa to a one-component developer.
Appellants argue that a conventional two-component
developer has a mechanism for moving the developer into and
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