Electrostatographic toner composition containing surfactant

A finely-divided toner composition comprising a colorant, a thermoplastic resin, and a surface active additive dispersed in said toner composition, said surface active additive being capable of providing a positive triboelectric charging potential to said toner composition, said surface active additive being selected from highly fluorinated materials having an ionic group, said ionic group being selected from a cationic group and an anionic group, ssid toner composition having been prepared by dissolving said thermoplastic resin and thoroughly mixing said colorant, said thermoplastic resin and said surface active additive to yield a uniform mixture which is then spray-dried to form finely-divided toner particles.

A finely-divided toner composition comprising a colorant, a thermoplastic resin, and a surface active additive dispersed in said toner composition, said surface active additive being capable of providing a positive triboelectric charging potential to said toner composition, said surface active additive selected from monomers and polymers containing ionic groups consisting of tetraheptyl ammonium bromide, neutralized acrylic acid, and vinyl pyridine.

A process for preparing a finely-divided toner composition having a positive triboelectric charging potential, said process comprising the steps of dissolving a thermoplastic resin, adding a colorant and a highly fluorinated material having an ionic group selected from a cationic group and an anionic group to said resin, thoroughly mixing said resin, colorant, and fluorinated material, and spray-drying said resin, colorant, and fluorinated material to yield toner particles having an average particle size of less than about 30 microns.