| 摘要 |
PURPOSE:To enable good images to be stably formed in numerous times by using a toner comprising a binder resin powder and fine particles smaller than said powder in diameter subjected to surface treatment with a cleavable or extensible material. CONSTITUTION:The toner comprises the binder resin powder and the fine particles having a smaller diameter than that of said powder and subjected to surface treatment using the cleavable or extensible material, preferably, obtained by mixing the fine particles having an average particle diameter of 0.05-3mum with the cleavable or extensible material and giving mechanical impact to them to fix said material to the surface of each of the fine particles, thus permitting good images to be stably formed in numerous times not accompanied by damage of a photosensitive body and stains with the toner constituents. |
