Appeal No. 2006-0511 Page 5
Application No. 10/258,312
flow indices or a slope of G’ within the claimed ranges (Brief,
pages 3-7).
Appellants’ arguments are not persuasive. Wang is directed to
the same problems facing appellants, namely the problems associated
with solvent and aqueous wash developing systems for producing
flexographic printing plates (col. 1, ll. 40-48; see appellants’
specification, page 1, ll. 23-27). Wang solves these problems by
the same method as appellants, namely use of a thermal development
process (col. 1, ll. 49-56; specification, page 1, l. 28-page 2, l.
5). As correctly found by the examiner (Answer, page 4), Wang
discloses each and every step of the claimed process, i.e.,
providing a photosensitive element comprising a support and at
least one photopolymerizable elastomeric layer, imagewise exposing
the element to actinic radiation to polymerize areas exposed to the
radiation, and thermally treating the exposed element to remove
unpolymerized material and form a relief surface (Wang, col. 2, l.
50-col. 3, l. 43). As also correctly found by the examiner
(Answer, pages 4 and 7), Wang discloses a photosensitive
elastomeric layer which preferably comprises 75-85 parts-by-weight
(pbw) of a styrene-isoprene-styrene block copolymer with a non-
elastomer to elastomer ratio of 10:90 to 35:65, 5 to 15 pbw of a
crosslinker such as multi-functional acrylates or a polyacryloyl
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