Patent ID: 8197998
Filing Date: 2012-06-12
Classification: G03G

Abstract:
1. A toner comprising: a core comprising at least one amorphous resin, at least one crystalline resin, and one or more optional ingredients selected from the group consisting of optional colorants, optional waxes, and combinations thereof; and a shell comprising at least one charge control agent selected from the group consisting of alkyl pyridinium halides, bisulfates, organic sulfates, organic sulfonates, cetyl pyridinium tetrafluoroborates, distearyl dimethyl ammonium methyl sulfate, aluminum salts, zinc salts, azo-metal complexes, amorphous metal complex salt compounds, carboxylic acids, substituted carboxylic acids, metal complexes of carboxylic acids, nitroimidazole derivatives, calixarene compounds, sulfonates, styrene-acrylate-based copolymers with sulfonate groups, styrene-methacrylate-based copolymers with sulfonate groups, and combinations thereof, co-emulsified with at least one amorphous shell resin.