| 摘要 |
PROBLEM TO BE SOLVED: To provide a powder manufacturing apparatus, especially an apparatus and method for manufacturing toner, which can efficiently process a ground object with no irregularity and less coagulation adhesion or aggregation of the ground object by jet flow grinding that accompanies supplied ground objects.SOLUTION: An acceleration tube 2 consists of an acceleration part A whose cross-sectional area perpendicular to the central axis X1 of the acceleration tube expands toward the jet direction of a jet, and an acceleration part B whose cross-sectional area is constant and which is a straight pipe channel parallel to the central axis of the acceleration tube. A distance L1 from a start point a1 of the acceleration part A to the opening part center point a2 of the supplier of the supply hole 3 is fixed so that a fulcrum b where the central axis of the acceleration tube intersects with the central axis X2 of a supply hole exists in the acceleration part B and an opening part center point a2 of a supplier of the supply hole 3 is located on an outer peripheral surface of the acceleration tube that forms the acceleration part A of the acceleration tube. The supply hole 3 joins the acceleration tube, inclining so that the angle &thetas; between the central axis of the acceleration tube and the central axis of the supply hole satisfies 30°≤&thetas;<60°. |
