A method of forming images comprising: forming visualized images by using a single component development device or a process cartridge comprising the single component development device, wherein the single component development device comprises: a toner comprising a resin, a coloring agent, a wax, a charge control agent and an inorganic particulate; a development roller configured to bear the toner on the surface of the development roller and transfer the toner to an image bearing member; and a thin layer forming member configured to regulate the thickness of a layer of the toner while in contact with the surface of the development roller via the toner borne thereon; wherein the regulating pressure A between the thin layer forming member and the development roller is from 25 to 60 N/m, the content Z in weight % of the charge control agent satisfies the following relationship and the average dispersion particle diameter D in nm of the charge control agent satisfies the following relationship: 0.029 × A - 0.150 > Z > 0.013 × A - 0.013 D < 6.3 × A - 106.3 wherein the average dispersion particle diameter of charge control agent is determined by weighing 1.0 g of toner; adding 5 ml of ethanol thereto; stirring the solution by a roll mill at 120 rpm for one minute; suction-filtrating the resultant; observing the trace of the charge control agent on the surface of 10 toner particles selected at random with an SEM; and calculating the average dispersion particle diameter. forming visualized images by using a single component development device or a process cartridge comprising the single component development device, wherein the single component development device comprises: a toner comprising a resin, a coloring agent, a wax, a charge control agent and an inorganic particulate; a development roller configured to bear the toner on the surface of the development roller and transfer the toner to an image bearing member; and a thin layer forming member configured to regulate the thickness of a layer of the toner while in contact with the surface of the development roller via the toner borne thereon; a toner comprising a resin, a coloring agent, a wax, a charge control agent and an inorganic particulate; a development roller configured to bear the toner on the surface of the development roller and transfer the toner to an image bearing member; and a thin layer forming member configured to regulate the thickness of a layer of the toner while in contact with the surface of the development roller via the toner borne thereon; wherein the regulating pressure A between the thin layer forming member and the development roller is from 25 to 60 N/m, the content Z in weight % of the charge control agent satisfies the following relationship and the average dispersion particle diameter D in nm of the charge control agent satisfies the following relationship: 0.029 × A - 0.150 > Z > 0.013 × A - 0.013 D < 6.3 × A - 106.3 wherein the average dispersion particle diameter of charge control agent is determined by weighing 1.0 g of toner; adding 5 ml of ethanol thereto; stirring the solution by a roll mill at 120 rpm for one minute; suction-filtrating the resultant; observing the trace of the charge control agent on the surface of 10 toner particles selected at random with an SEM; and calculating the average dispersion particle diameter.