Method of manufacturing toner and toner manufactured by the method

A method of manufacturing toner comprising:

• mixing mother toner particles comprising a binder resin and a coloring agent and second particles having an average primary particle diameter of from 10 nm to less than 100 nm to obtain a mixture of the mother toner particles and the second particles;
• and
• mixing the mixture and first particles having an average primary particle diameter of from 100 nm to 1 μm using a mixer comprising a rotary shaft member, multiple stirring members provided to a surface of the shaft member, and a casing to cover the multiple stirring members,
• wherein a cross section of an inner periphery of the casing relative to a direction perpendicular to a rotation axis of the shaft member is circularly around the rotation axis with a substantially constant distance between the inner periphery and the rotation axis in a state in which the casing covers the multiple stirring members and a cooling jacket is provided to at least part of an outer periphery of the casing;
• and
• wherein a weight ratio of the first particles to the mother toner particles is from 1.5% to 10%.