| 摘要 |
PURPOSE:To obtain a kneader capable of increasing a kneading quantity per hour and a kneader especially suitable for producing a high-quality toner for developing an electrostatically charged image. CONSTITUTION:In a kneader having kneading parts formed by providing a rotatable screw in a barrel 12, a plurality of gates 14 that can adjust the opening degree of a path of a material to be kneaded are provided in the kneading parts 2-8. In this case, where the kneading parts from a supply port of a material to be kneaded to a discharge port 9 of a kneaded material has a length L, a gate 14a nearest the supply port is disposed at a position 0.1-0.5 L distant from the supply port, a gate 14b nearest the discharge port is disposed at a position 0.5-0.9L distant from the supply port, and the inner diameter of the discharge port-side gate is determined to be smaller than or equal to the inner diameter of the supply-side gate. |
