Abstract
The electrophotographic image quality depends on the triboelectric charge of insulating toner. However, the control of triboelectric charge is difficult because of the insulating nature of toner. In this study, the controllability of charge on the insulating toner was experimentally investigated by using a corona charging system, an electron charging system (contact type), and an electrostatic induction charging system (non-contact type). The charging systems except the contact type electron charging were able to change the toner. The ion charging system changed the toner polarity to negative from positive. Although the toner was charged to the charge saturation level, the saturated value depended on the initial charge generated by the triboelectric charging. The electrostatic induction charging system was able to charge the toner with a high volume resistivity in the range of electrical insulation.
