For electrophotographic developer Ferrite carrier core material and a ferrite carrier with ferrite particles having an outer shell structure, and an electrophotographic developer using the ferrite carrier

摘要

Ferrite particles having a low apparent density, maintaining various properties in a controllable state, and being able to satisfy a certain volume with a small weight, and a ferrite carrier core for an electrophotographic developer using the ferrite particles A material, a ferrite carrier, and an electrophotographic developer using the ferrite carrier are provided. A ferrite particle having a porous structure inside and an outer shell structure on the outer periphery thereof, a ferrite carrier core material and a ferrite carrier for an electrophotographic developer using the ferrite particle, and the ferrite An electrophotographic developer using a carrier is employed. [Selection] Figure 1