Appeal 2006-2507
Application 10/106,473
(vi) adding to the resulting mixture a base to thereby change the pH
which is from about 2 to about 2.9 to arrive at a pH of from about 7 to about
8 for the resulting toner aggregate mixture;
(vii) heating the resulting aggregate suspension of (vi) above about
the Tg of the latex resin of (i);
(viii) optionally retaining the mixture temperature at from about 70°C
to about 95°C optionally for a period of about 10 to about 60 minutes,
followed by a pH reduction with an acid to arrive at a pH of about 5 to about
6 to assist in permitting the fusion or coalescence of the toner aggregates;
(ix) further retaining the mixture temperature from about 85°C to
about 95°C for a period of from 12 to about 20 hours to assist in permitting
the fusion or coalescence of the toner aggregates and wherein the toner
resulting possesses a smooth morphology;
(x) washing the resulting toner slurry; and
(xi) isolating the toner.
39. A process comprising the heating of a mixture of a magnetite
dispersion, a colorant dispersion, a latex emulsion, and a coagulant, wherein
said coagulant is a polymetal halide, and wherein said mixture is aggregated
by heating below the latex resin glass transition temperature, and thereafter
heating above the latex resin glass transition temperature, and wherein there
is further included a polymetal silicate, and wherein said aggregate mixture
is at a pH of from about 6.5 to about 7.5, and wherein said latex is comprised
of resin, nonionic surfactant, ionic surfactant, and water, and wherein said
coagulant is the polymetal halide polyaluminumchloride, and wherein said
polymetal silicate is a polyaluminum sulfo silicate.
GROUNDS OF REJECTION
The Examiner relies on the following prior art references as evidence
of unpatentability:
Lundy et al. US 5,552,252 Sep. 3, 1996
Patel et al. US 6,132,924 Oct. 17, 2000
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