Patent ID: 8148040
Filing Date: 2012-04-03
Classification: G03G

Abstract:
1. A toner comprising a mixture of first toner particles and second toner particles, the first toner particles being obtained by removing excessively-pulverized toner particles from a pulverized material at least containing a binder resin and a colorant through classification, the volume average particle size of the first toner particles being 4 μm or more and 8 μm or less, the second toner particles containing small-size particles having a volume average particle size of 1 μm or more and 4 μm or less and being obtained by spheronizing the excessively-pulverized toner particles having a smaller volume average particle size than that of the first toner particles, all of the first and second toner particle sizes D wherein D 50p and D 84p respectively representing particle sizes at 50% and 84% of cumulative number counted from a large-size side in a cumulative number distribution, an average degree of circularity of the small-size particles contained in the second toner particles being 0.940 or more and 0.960 or less, and among the small-size particles contained in the second toner particles, a content of amorphous particles having an average degree of circularity of 0.850 or less being 10% by number or less.