Emulsion aggregation toner incorporating aluminized silica...

Details Emulsion aggregation toner incorporating aluminized silica... Emulsion aggregation toner incorporating aluminized silica...

G - Physics

03

G

G03G 9/087 (2006.01) G03G 9/08 (2006.01)

Patent

CA 2563210

The toner includes emulsion aggregation toner particles having a core and a shell. The core includes binder including a first non-crosslinked styrene acrylate polymer and a crosslinked styrene acrylate polymer, at least one colorant, at least one wax, and aluminized silica. The shell includes a second non-crosslinked styrene acrylate polymer that is preferably the same as the non-crosslinked styrene acrylate polymer of the core. The aluminized silica is advantageously used as a coagulant in the emulsion aggregation formation process of the toner. A developer containing the toner and a method of forming an image using the toner are also described.

L'encre en poudre contient des particules de poudre d'encre à émulsion-agrégation possédant un noyau et une enveloppe. Le noyau renferme un liant qui comprend un premier polymère d'acrylate de styrène non réticulé ainsi qu'un polymère d'acrylate de styrène réticulé, au moins un colorant, au moins une cire, ainsi que de la silice aluminée. L'enveloppe comprend un second polymère d'acrylate de styrène non réticulé, idéalement le même que celui se trouvant dans le noyau. La silice aluminée est utilisée avantageusement comme coagulant dans le processus de formation de l'émulsion-agrégation de la poudre d'encre. Un révélateur contenant l'encre en poudre et une méthode permettant de former une image à l'aide de l'encre en poudre sont également décrits.

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