The full color printer has been widely used in the office and the demand on the full color printer has been also increasing. Especially the high-speed printing and the oilless fusing are strongly requested. However it is difficult for the full color printer to achieve the oil-less fusing because of the higher pile height of the developed toner and the lower viscosity of the melted toner.In this report the design of the oil less color toner on nonmagnetic single component development was investigated. It is necessary to add a large amount of wax with low melting point and to control the dispersion of wax for oil-less fusing. Especially, it is very important to keep the dispersion of the wax extremely small on nonmagnetic single-component development. The durability of the toner with large dispersion of wax becomes worse, because the toner is crashed at the interface between the wax and the resin. And it is suitable to use open-roll type kneading machine to have good dispersibility of the wax.