| 摘要 |
Disclosed are a ferrite carrier for electrophotographic developer and an electrophotographic developer using the ferrite carrier, wherein: the ferrite carrier is a composite ferrite composed of Li and Mg; when the composition of the ferrite is calculated as a mixture of a Li ferrite having a stoichiometric composition and a Mg ferrite having a stoichiometric composition, the excessive amount of Fe<SUB>2</SUB>O<SUB>3 </SUB>is less than 5 mol %, or the total excessive amount of Li<SUB>2</SUB>O and MgO is less than 1 mol %; the content of the elements other than Li, Mg, Fe and O is 2% by weight or less; and further, the content of Mn in terms of element is 1000 to 9000 ppm.
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