Preparation of electrostatographic toner material provided with surface electroconductivity

摘要

A process for the preparation of an electrostatographic toner material suitably employable for the pressure fixing process which is provided with a colored electroconductive powder on the outer surface, which comprises encapsulating pressure fixable adhesive core material containing colorant and magnetizable substance with shell material in an aqueous medium to prepare encapsulated toner particles and spray-drying the so prepared encapsulated toner particles together with the colored electroconductive powder.