Appeal No. 2000-0812 Page 9
Application No. 08/989,469
Coppens in combination with the teachings of Vrancken would
result in the claimed lithographic printing plate and its
polymer particle size and polydispersity. In that regard,
while Vrancken discloses the claimed range for polymer
particle size by specifying the particles of not larger than
100 nm, Coppens’ polymer particles are required to be larger
than 200 nm which is much larger than the claimed range.
Furthermore, we find that the heterodispersity or
homodispersity of silver halide grains of Coppens neither
teaches nor suggests the same for polymer particles, which
belong to a completely different layer of the disclosed
printing plate. The references do not provide any reasons for
one of ordinary skill in the art to apply the properties of
Coppens’ silver halide imaging layer to the intermediate
recording polymer particle layer of Vrancken. The Examiner
has further failed to establish why hydrophobic polymer
particles of Vrancken would benefit from uniformity of silver
halide grain size in Coppens as the polymer particles and the
silver halide grains belong to different layers, each having a
different composition and function.
Thus, we find no reason or suggestion for combining
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