ABSTRACT OF THE DISCLOSUREFerrite beads prepared via spray drying of a slurry ofmixed oxides have characteristic voids or dimples present in thedried particles. This invention relates to the preparation of aslurry of ferrite forming metal oxides in a liquid wherein theslurry has a viscosity at about 23°C of between about 55,000centipoise and about 140,000 centipoise, spray drying the slurryto form substantially spherical metal oxide beads, and sinteringthe beads to form ferrite particles which are continuous in sur-face area and free of interior voids. Electrostatographic developer mixtures prepared with said ferrite materials and processesof developing electrostatic latent images therewith are also dis-closed.
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