Patent ID: 7141343

Claim:
A magnetic toner comprising at least: magnetic toner particles; non-magnetic, metallic-compound fine particles on the surface of said magnetic toner particles comprising at least tin oxide fine particles containing antimony treated with iso-butyl trimethoxysilane or amino-modified silicone oil; and inorganic fine powder also existing on the surface of said toner particles, wherein: said magnetic toner particles comprise at least a binder resin and a magnetic iron oxide; the weight-average particle diameter A of said magnetic toner is 3.0 μm to 12.0 μm; and said non-magnetic, metallic-compound fine particles are conductive metallic-compound fine particles which have: a specific surface area, measured in units of cm 2 /cm, 3 of 5×10 5 to 100×10 5 ; a D 50 median diameter of 0.4 μm to 4.0 μm with respect to a volume-based particle diameter distribution, the median diameter D 50 being smaller than the weight-average particle diameter A of the magnetic toner; and a 90% particle diameter D 90 of 6.0 μm or less with respect to a volume-based particle diameter distribution.