Appeal No. 1997-2070
Application 08/487,921
The subject matter on appeal is directed to an tonable , 1
radiation sensitive recording material comprising a) a
support; b) a tonable, radiation sensitive layer which adheres
to the support; and c) a coversheet which adheres to the
tonable, radiation sensitive layer wherein the support has
greater adhesion to the tonable, radiation sensitive layer
than the coversheet. Further, the tonable, radiation
sensitive layer comprises at least one compound which after
exposure to actinic radiation causes a change in the tackiness
of the composition; a photoinitiator; a polymeric binder; and,
importantly, a polydiorganosiloxane with polar and/or
ethylenically unsaturated groups which is present in the
amount of 0.05 to 0.7 % by weight relative to the weight of
the tonable, radiation sensitive layer. Significantly, the
polydiorganosiloxane component of appellants' tonable
radiation sensitive layer influences the adhesion properties
1A positive "tonable" material has a tacky
photopolymerizable layer, which, upon imagewise exposure,
loses its tackiness in the exposed areas while retaining its
tackiness in the unexposed areas. Thus, a latent image may be
formed by applying suitable toning materials which adhere only
to the unexposed, tacky areas. See the specification at page
2.
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