Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2011-01-11
2011-01-11
Le, Hoa V (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S137180, C399S111000, C399S119000, C399S122000, C399S320000
Reexamination Certificate
active
07867680
ABSTRACT:
A non-magnetic toner including a binder resin including a first resin, a second resin, a third resin; a colorant; and a wax, wherein the first resin is a hybrid resin including an amorphous condensation polymerization unit and a radical polymerization unit in its molecular frame, and the second and third resins are non-hybrid resins including condensation polymerization units, wherein each of the first, second and third resins has a glass transition temperature (Tg) and a softening point (Tm) satisfying the following relationships:in-line-formulae description="In-line Formulae" end="lead"?Tg of first resin<Tg of second resin<Tg of third resin, which is from 70 to 80° C., andin-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?Tm of second resin<Tm of third resin<Tm of first resin, andin-line-formulae description="In-line Formulae" end="tail"?wherein the binder resin includes the first resin in an amount of from 10 to 20% and the third resin of from 25 to 45% by weight.
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Fuwa Kazuoki
Hagi Masayuki
Katoh Hiroaki
Mikuriya Yoshihiro
Sekiguchi Yoshitaka
Le Hoa V
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh Company Limited
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