Methods for producing toner particle and producing resin particle

A method for producing a toner particle, the method comprising the steps of:

• (a) mixing a binder resin A, resin fine particles containing a resin B, a resin C, an organic solvent, and carbon dioxide, thereby forming a droplet of a resin solution containing the binder resin A, the droplet being covered with the resin fine particles;
• (b) applying a pressure by introducing carbon dioxide, thereby precipitating the resin C at the surface of the droplet;
• and
• (c) passing carbon dioxide so as to remove the organic solvent from the droplet with the carbon dioxide,
• wherein the resin C has an organic polysiloxane structure represented by the following formula (i) and a weight average molecular weight Mw of at least 50,000 and not more than 500,000, and the ratio Mw/Mn of the weight average molecular weight Mw to the number average molecular weight Mn of the resin C is not more than 5.0, and
• the proportion of the mass of the resin C to the mass of the resin fine particles is at least 5.0% by mass and not more than 50.0% by mass:
• wherein R1 represents an alkyl group having a carbon number of 1 to 3, and n represents the degree of polymerization.