Patent ID: 7579128

Claim:
A toner composition comprising toner particles including additive particles upon an external surface of the toner particles, wherein the additive particles include crosslinked styrene containing polymer particles comprising: a styrene copolymer derived from styrene monomer and at least one additional monomer selected from the group consisting of 1,3-diene, alkyl acrylate-acrylic acid, 1,3-diene-acrylic acid, alkyl methacrylate-acrylic acid, alkyl methacrylate-alkyl acrylate, alkyl methacrylate-aryl acrylate, aryl methacrylate-alkyl acrylate, alkyl methacrylate-acrylic acid, alkyl acrylate-acrylonitrile-acrylic acid, 1,3-diene-acrylonitrile-acrylic acid, alkyl acrylate-acrylonitrile-acrylic acid and combinations thereof, or a crosslinked styrene homopolymer.