Electric charge controlling agent, toner for developing electrostatic charge image containing the same, and method for forming image using the toner

摘要

The charge control agent comprises aggregate particles including an azo-type iron complex salt represented by the following chemical formula [VI] (in the chemical formula [VI], B+ is (H+)x(Na+) 1-x and x is mole ratio and 0.6 to 0.9, or B+ is (H+)y(Na+)1-y and y is mole ratio and 0 to 0.2) and the aggregate particles have 0.5 to 5.0 microns of an average particle size. A toner for developing an electrostatic image comprises a resin for the toner and the charge control agent. An image formation process of electrophotography comprises a step for developing an electrostatic latent image on an electrostatic latent image frame by a developer including the toner.