Patent ID: 7727700

Claim:
A method of producing a toner for developing an electrostatic image comprising: preparing toner particles that comprise at least a binder resin and a colorant, and adding at least two groups of inorganic fine particles to the toner particles, at least two of the groups differing in average primary-particle diameter, wherein at least one group (1) having a larger average primary-particle diameter than another group (2) is added to the toner particles in an aqueous medium that comprises a surfactant having a polarity which is opposite the polarity of a polar group attached to a surface of the toner particles, wherein the at least one group (1) has a primary particle diameter of 50 nm to 300 nm, and the another group (2) has a primary particle diameter of 5 nm to 30 nm; and Xa is 0.5% by mass to 6.0% by mass, and Xb is 0.2% by mass to 5.0% by mass, wherein Xa and Xb are the contents of the groups (1) and (2) inorganic fine particles in the toner, respectively.