Patent ID: 8372572
Filing Date: 2013-02-12
Classification: G03G

Abstract:
1. A method of manufacturing a toner comprising: a step of producing a fine silicone-containing oxide particles by a sol-gel method including drying and spheroidizing, a step of heating the fine silicone-containing oxide particles to 2.0% or less of the water content in the fine silicone-containing oxide particles, a step of imparting hydrophobic property to the fine silicone-containing oxide particles obtained by the heating step by hydrophobic property-imparting treatment, and a step of externally adding the fine silicone-containing oxide particles obtained by the imparting hydrophobic property step to a toner particles by mixing the toner particles and the fine silicone-containing oxide particles, wherein the toner comprises of the toner particles containing at least a binder resin and a coloring agent; and the silicone-containing oxide particles having an average primary particle size of not smaller than 70 nm but not larger than 150 nm and containing water in an amount of not larger than 2.0% by weight.