Patent ID: 6156473
Filing Date: 2000-12-05
Classification: G03G

Abstract:
A method for forming a toner particle composition, said process comprising the steps of:a) milling an aliphatic amide or an aliphatic acid in the presence of a binder polymer and a water immiscible organic binder solvent, thereby forming an aliphatic amide or aliphatic acid concentrate, said aliphatic amide or aliphatic acid having a particle size of less than one micrometer;b) dissolving a binder polymer and a charge control agent in a water immiscible organic binder solvent, thereby forming a binder solution;c) mixing said aliphatic amide or aliphatic acid concentrate with said binder solution, thereby forming an aliphatic amide- or aliphatic acid-binder polymer dispersion;d) dispersing said aliphatic amide- or aliphatic acid-binder polymer dispersion in water containing a colloidal stabilizer, thereby forming an aqueous suspension of droplets;e) subjecting said aqueous suspension of droplets to a shearing action, thereby reducing the size of the droplets and forming limited coalescence particles;f) removing the water immiscible organic binder solvent from the limited coalescence particles, thereby forming toner particles in an aqueous medium; andg) drying the toner particles.