Appeal No. 1996-1788
Application No. 08/158,580
from consideration by the examiner pursuant to 37 CFR §
1.142(b) as being directed to a non-elected invention and,
thus, are not before us.
The claims on appeal are directed to a reactive melt
mixing process involving the use of a reactive base resin, an
initiator and a polyester with amine functionality to form a
crosslinked toner resin. Claim 1 is illustrative:
1. A reactive melt mixing process for the preparation of
a low fix temperature toner resin, consisting essentially of:
(a) mixing a reactive base resin, an initiator, and a
polyester with amine functionality, and
(b) crosslinking the resulting polymer melt under high
shear to form a crosslinked toner resin, and wherein there
occurs a reaction between said initiator and said amine
functionality thereby forming free radicals which attack the
unsaturated sites of the base resin causing crosslinking
thereof, and wherein said crosslinked toner resin is
substantially free of sol.
The examiner relies upon the following prior art
references as evidence of obviousness:2
Fuller et al. (Fuller) 5,166,026 Nov. 24, 1992
Wilson et al. (Wilson) 5,194,472 Mar. 16, 1993
Mahabadi et al. (Mahabadi I) 5,227,460 July 13, 1993
2The examiner's answer (page 2) indicates that another
prior art reference (McCabe et al.) is no longer relied upon
in rejecting the claims.
2
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