Patent ID: 6461783
Filing Date: 2002-10-08
Classification: G03G

Abstract:
A process for preparing a finely divided, comminuted particulate toner composition for developing latent electrostatic images comprising:(a) preparing a first resin composition comprising a resin component, a vaporizable plasticizer component, a colorant component, optionally a charge control agent and optionally toner additives; (b) dispersing said first resin composition in an organic medium comprising an organic solvent component and a surfactant, said resin being substantially insoluble in said organic medium; (c) comminuting said first resin composition in said organic medium by way of application of shear thereto at a first elevated temperature; (d) removing said vaporizable plasticizer component from said comminuted resin particles by evaporating said vaporizable plasticizer component at a second elevated temperature; and (e) recovering said comminuted particulate toner composition from said organic medium.