Abstract: A process for preparing a dispersion polymerized color toner for developing latent electrostatic images includes polymerization of a macromer in a liquid organic medium in which the macromer or the resulting polymer resin is not soluble. The liquid organic medium comprises a polymeric dispersion stabilizer. A macromer mixture comprising macromer, a colorant and a charge control agent may be polymerized in the dispersed state to produce the toner. Alternatively, the macromer is polymerized in the dispersed state to produce a particulate polymer resin. The particulate polymer resin formed is a functionalized resin having sites suitable for interacting with functionalized dyes that have complementary functionality. The functionalized dye is then applied to the resin particles typically with a dyeing aid, or surfactant. Toners produced by the inventive processes are substantially free of contamination by the liquid organic medium used during dispersion polymerization and/or dispersion dyeing.

Abstract: A process for preparing a dispersion dyed color toner for developing latent electrostatic images includes dyeing a particulate polymer resin in organic medium in which the resin is not soluble. The resin is a functionalized resin having sites suitable for interacting with functionalized dyes have corresponding functionality. The functionalized dye is applied to the resin particles typically with a dyeing aid, or surfactant. The particle size distribution of the polymer resin is substantially unchanged during the toner preparation process.

Abstract: A process for preparing a dispersion polymerized color toner for developing latent electrostatic images includes polymerization of a macromer in a liquid organic medium in which the macromer or the resulting polymer resin is not soluble. The liquid organic medium comprises a polymeric dispersion stabilizer. A macromer mixture comprising macromer, a colorant and a charge control agent may be polymerized in the dispersed state to produce the toner. Alternatively, the macromer is polymerized in the dispersed state to produce a particulate polymer resin. The particulate polymer resin formed is a functionalized resin having sites suitable for interacting with functionalized dyes that have complementary functionality. The functionalized dye is then applied to the resin particles typically with a dyeing aid, or surfactant. Toners produced by the inventive processes are substantially free of contamination by the liquid organic medium used during dispersion polymerization and/or dispersion dyeing.

Abstract: A process for producing microspheric toner particles suitable for color toner applications includes forming coarse particles of an amorphous polymer with one or more pigments and optionally a charge control agent followed by reducing the particle size such that it is suitable as toner for high resolution electrostatic imaging. A step of comminuting the particles includes forming a dispersion of the particles in a liquid organic medium and applying shear in the presence of a surfactant. In another embodiment, the invention discloses a process for producing microspheric particles of substantially amorphous resin with an average diameter in the range of from about 2 to about 10 microns. Preferred resins include amorphous polyester resins and ethylene/norbornene copolymers.