Patent ID: 8053154
Filing Date: 2011-11-08
Classification: G03G

Abstract:
1. A toner comprising: toner particles which comprise a binding resin, a colorant, and a charge controlling agent, and external additives which comprise an inorganic particle, wherein the charge controlling agent is an organic boron compound represented by formula (A): wherein B is boron, X is an alkali metal, R and the inorganic particle is a magnesium silicate compound represented by formula (2): wherein x and y are integers, a Mohs hardness of the inorganic particle is 4.5 to 8 and the magnesium silicate compound is one selected from the group consisting of forsterite and enstatite, and wherein an average primary particle diameter of the magnesium silicate compound is 0.05 μm to 0.15 μm and an average secondary particle diameter of the magnesium silicate compound is 0.2 μm to 0.6 μm, and an amount of the magnesium silicate compound added is 0.1 parts by mass to 5 parts by mass relative to 100 parts by mass of the toner particles.