Process for producing toner particles

A process for producing toner particles in a liquid dispersion medium;

• the process being a toner particle production process comprising:
• (a) forming a slurry which contains toner particles;
• and
• (b) subjecting the slurry to a filtering step for solid-liquid separation by means of a belt filter having a pressing aeration means which carries out aeration with pressing, to form wet toner particle cakes, wherein said filtering step which forms the wet toner particle cakes comprises the steps, in sequence, of
• (i) dehydrating the slurry which contains toner particles, to obtain toner particle cakes;
• (ii) washing the resultant toner particle cakes to obtain wash-water-containing toner particle cakes;
• and
• (iii) subjecting the wash-water-containing toner particle cakes to aeration with pressure by said pressing aeration means to obtain said wet toner particle cakes.