| abstract |
A magnetic toner which enables stable image- concentration irrespective of use environment. This magnetic toner exhibits excellent low-temperature fixity, little image deterioration in fixing, high color-fixing power, less toner consumption. The magnetic toner contains at least a binder resin and a magnetic body. The binder resin contains a polyester unit. The toner has a weight-average particle diameter of 5.0 to 9.0 μm, a true specific gravity of 1.3 to 1.7 g/cm3, and a saturated magnetization of 20 to 35 Am2/kg in a magnetic field of 796 kA/m. The dielectric loss tangent (tanδ) of the toner satisfies (tanδH-tanδL)/tanδL≤0.20 at 100 kHz. |