Appeal No. 1997-0897
Application No. 08/227,992 Page 17
and do not teach a transparent covering having top and bottom
chamfers of different depths to change the thickness of the
transparent covering above the open top of the frame along the
light receiving axis.
We make reference to our findings, supra, with respect to
the teachings of the admitted prior art. In addition, we find
that Rhodes, like Koch, is directed to a photographic camera
(page 1, lines 15-17) that reads an entire image at one time and
is not directed to a line reader. Rhodes discloses frame C to
include a ground glass plate. Frame C is hinged to the camera-
box so that it can be reversed to bring the ground glass nearer
to or farther away from the lens (page 1, lines 19-22). Rhodes
discloses frame D2 to have a deep-seated recess h', which is
about the thickness of a sensitized plate (page 2, lines 17-22),
and that the recess includes a tapered edge, as shown in figure
8. Blocks h2 are secured to the corners of the frame, and the
partition board I, which holds the sensitized plates, is
supported by the blocks (page 2, lines 22-26 and 41-43, and
figure 3). As shown in figure 4, the sensitized plates are held
in place by slotted corner-pieces j, spring l, and projecting
strips k. The slotted corner-pieces j are adjustable
longitudinally or laterally. The strips k can be adjusted away
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