Abstract
The influence of external additives materials to charging site number on toner surface has been experimentally investigated. The variation of external additives materials on toner surface and toner concentration have been examined by blow-off method. There is a strong correlation of the toner triboelectric charge and its toner concentration dependence with the silica content on the toner surface. It means that the silica charging site is contributed to toner triboelectric charging characteristics. It is found that a independent relationship between the triboelectric charging characteristics of toner and silica is indicated.
