Single component developer of emulsion aggregation toner

G - Physics – 03 – G

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G03G 9/08 (2006.01) G03G 15/08 (2006.01)

Patent

CA 2556811

A toner for developing electrostatic images in a single component development (SCD) system free of carrier and including emulsion aggregation toner particles of a styrene acrylate polymer binder, at least one release agent and at least one colorant, wherein the toner particles have a volume average particle size of from about 5 µm to about 10 µm, an average circularity of about 0.95 to about 0.99, a volume and number geometric standard deviation (GSD v and n) of from about 1.10 to about 1.30, and an onset glass transition temperature of from about 45°C to about 65°C, is ideally suited for forming an image using a single component image forming device.

Toner permettant de révéler des images électrostatiques dans un système de révélateur à un seul constituant (SCD) dépourvu d'élément porteur et comportant des particules d'agrégation d'émulsion d'un liant en polymère styrène-acrylate, au moins un agent démoulant et au moins un colorant, dans lequel les particules d'encre ont une taille moyenne par volume à peu près comprise entre 5 µm et 10 µm, une circularité moyenne à peu près comprise entre 0,95 et 0,99, un écart-type géométrique en volume et en nombre (GSD v et n) à peu près compris entre 1,10 et 1,30, et une température de transition vitreuse de départ à peu près comprise entre 45 et 65 oC. Le toner convient parfaitement pour former une image à l'aide d'un dispositif imageur à un seul composant.

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