A toner containing a toner particle manufactured by dispersing an organic solvent in which a component comprising a polymer having a portion reactive with an active hydrogen group is dispersed or dissolved in an aqueous medium; and reacting the polymer with a compound having at least one active hydrogen group, where the polymer is prepared by reacting an aliphatic polyol, a polyester resin and a diisocyanate compound and has an isocyanate group on at least one end of the polymer.