Patent ID: 7939232
Filing Date: 2011-05-10
Classification: G03G

Abstract:
1. A toner, comprising: toner base particles that are obtained by adding a second resin particle dispersion in which second resin particles are dispersed to aggregated particles and heating the resultant mixture so that the second resin particles are fused with the aggregated particles, the aggregated particles being obtained by mixing in an aqueous medium at least a resin particle dispersion in which resin particles are dispersed, a colorant particle dispersion in which colorant particles are dispersed, and a wax particle dispersion in which wax particles are dispersed and heating the mixed dispersion so that the particles are aggregated, wherein a gel permeation chromatography (GPC) measurement of the resin particles forming the aggregated particles shows that a weight-average molecular weight (Mw wherein a gel permeation chromatography (GPC) measurement of the second resin particles shows that a number-average molecular weight (Mn) is 9000 to 30000, a weight-average molecular weight (Mw) is 50000 to 300000, and a ratio (Mw/Mn) of the weight-average molecular weight (Mw) to the number-average molecular weight (Mn) is 2 to 10, and wherein the wax particles comprise at least a first wax and a second wax, the first wax has an endothermic peak temperature (melting point Tmw a second wax comprises an aliphatic hydrocarbon wax, and a relationship between an endothermic peak temperature (melting point Tmw