| 摘要 |
A developer comprising toner particles containing at least a binder resin and a colorant, an inorganic fine powder whose primary particles have a number-average particle diameter of from 4 nm to 50 nm, and a conductive fine powder whose primary particles have a number-average particle diameter of from 50 nm to 500 nm. The conductive fine powder contains an agglomerated matter of the primary particles. The developer comprises 15% to 60% by number of particles having particle diameters in the range of from 1.00 mum, inclusive, to 2.00 mum, exclusive, and 15% to 70% by number of particles having particle diameters in the range of from 3.00 mum, inclusive, to 8.96 mum, exclusive, in number-based particle size distribution of particles having particle diameters in the range of from 0.60 mum, inclusive, to 159.21 mum, exclusive. Also, an image forming method and a process cartridge are disclosed which make use of the developer.
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