| 摘要 |
PURPOSE: A magnetic toner using a magnetic material surface processed with a silane compound is provided to secure the excellent development stability at the high temperature and high humidity environment. CONSTITUTION: A magnetic toner includes a magnetic toner particle including a binding resin and a surface processed magnetic material, and an inorganic fine powder body. The magnetic material is surface processed with a silane compound including a hydrocarbon radical with 2~4 carbons. The magnetic material has the moisture absorption amount per unit area based on the BET specific surface area under 0.300mg/square meters.
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