| abstract |
The present invention provides a ferrite carrier core material for an electrophotographic developer having high magnetization, high resistance and low specific gravity, and a method for producing the same, simple, economical and uniform particles. Ferrite particles having an apparent density of 1.5 to 2.0 g / cm 3 , a saturation magnetization of X (Am 2 / kg), and an electric resistance of Y (Ω) satisfying the following formula: A ferrite carrier core material for an electrophotographic developer and a method for producing the same are employed. [Selection figure] None |