| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a classifying apparatus and classifying method which can improve a classification precision in a classifying chamber of the classifying apparatus and separate particles of the range of the required size with excellent efficiency and to provide a toner and a method for producing the toner. <P>SOLUTION: The classifying apparatus includes a cylindrical casing, a powder material feeding port, a louver ring, a center core, a separator core, a dispersion chamber defined by the center core and an inner wall of the casing for dispersing the powder material together with the high-pressure air, a classification chamber defined by the center core, the separator core and a side inner wall of the casing for centrifugally separating the powder material fed from the dispersion chamber into fine powder and coarse powder, and a flow path encircling the louver ring and receiving the high-pressure air and the powder material fed from the powder material feeding port. In a horizontal cross section of the classifying apparatus containing the powder material feeding port and the louver ring, the louver ring is located at a position where the louver ring does not intersect with an extended line of a wall surface of the powder material feeding port at the side of the louver ring. <P>COPYRIGHT: (C)2012,JPO&INPIT |
