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US 8,465,898 B2Granted
Ferrite carrier core material and ferrite carrier for electrophotographic developer, and electrophotographic developer using the ferrite carrier
AssigneePowdertech Co., Ltd.
InventorsToru Iwata, Koji Aga
Life of this patent
Estimating the term…
Abstract
There are provided a ferrite carrier core material for an electrophotographic developer, which contain 10 to 30% by weight of Mn, 1.0 to 3.0% by weight of Mg, 0.3 to 1.5% by weight of Ti and 40 to 60% by weight of Fe, a ferrite carrier for an electrophotographic developer obtained by coating the ferrite core material, and an electrophotographic developer using the ferrite carrier.
Claims10
A ferrite carrier core material for an electrophotographic developer, comprising 13 to 27% by weight of Mn, 1.0 to 3.0% by weight of Mg, 0.3 to 1.5% by weight of Ti and 42 to 58% by weight of Fe.
Dependencies are inferred from the claim text.