| 摘要 |
PURPOSE:To provide a suspension polymn. toner excellent in durability which gives stable and sharp picture image characteristics without influenced by environmental changes of temp. and humidity. CONSTITUTION:The suspension polymn. toner has an external additive and colored suspension resin particles having 0.90-1.00 Wadell practical sphericity and containing at least a coloring agent and low softening point material. In this toner, the amt. of the low softening point material is 5-30wt.% of the suspension polymn. toner, and the external additive has the opposite polarity to the suspension polymn. toner and has 0.01-1m average particle size. The toner consists of resin particles having 0.90-1.00 Wadell practical sphericity and inorg. fine particles having smaller average particle size than the resin particles. |
