Patent ID: 8852836

Claim:
A toner comprising: a base resin; and charge-controlling resin particles contained in the base resin, wherein the toner is in shape of particles, and the charge-controlling resin particles are present in a region of each toner particle which is 500 nm in depth from a surface of the toner particle and an average of amounts of the charge-controlling resin particles present in the regions of the toner particles, which is obtained from cross-sectional images of the toner particles under a transmission electron microscope, is 20% by area to 70% by area, wherein an average of embedment rates of the charge-controlling resin particles in the toner particles is 90% or higher, where each embedment rate is an average of embedment rates of the charge-controlling resin particles in each toner particle, and wherein the charge-controlling resin particles have a charge amount of 60μC/m 2 or more as measured by a blow-off method, and wherein the charge-controlling resin particles each contain a charge-controlling agent which is at least one selected from the group consisting of a salicylic acid zinc complex, a salicylic acid zirconium complex and an organic boron complex.