| 摘要 |
PURPOSE:To obtain a toner having high positive chargeability and capable of forming a sharp copy of a desired color, by adding a colorant and a binder resin as main components, and a fine powder of benzoguanamine resin. CONSTITUTION:Benzoguanamine resin powder is added to a toner consisting mainly of a colorless resin, such as styrene or acrylic resin, and a colorant, in an amt. of 0.5-20pts.wt. benzoguanamine per 100pts.wt. resin in order to improve positive chargeability. Since this benzoguanamine is colorless, it can provide a toner capable of forming a sharp image of a desired color. |
