| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin filled ferrite carrier, etc., for electrophotographic developers, having high charge amount stability when used for a developer in spite of reducing the pore volume of a porous ferrite particle used as a ferrite carrier core material while holding the advantage of the resin filled ferrite carrier and capable of optionally controlling true specific gravity.SOLUTION: The resin filled ferrite carrier for electrophotographic developers includes a silicone resin charged in voids of a porous ferrite particle used as a ferrite carrier core material. The true specific gravity (Y) of the porous ferrite particle having the charged silicone resin and a Si/Fe value (X) measured by fluorescent X-ray elemental analysis satisfy the following inequality (1). The electrophotographic developer uses the resin filled ferrite carrier. |
