Heat treating apparatus for powder particles and method of producing toner

摘要

A heat treating apparatus for powder particles containing a binder resin and a colorant, the heat treating apparatus including: a treating chamber in which a heat treatment of the powder particles is performed; a raw material-supplying unit for supplying the powder particles to the treating chamber; a hot air-supplying unit that supplies hot air to the treating chamber; a cold air-supplying unit that supplies cold air for cooling the heat-treated powder particles; and a recovering unit that recovers the heat-treated powder particles. The raw material-supplying unit includes an introducing tube and a distributing member, and the distributing member is provided with a protruding member on a portion opposite to an outlet portion of the introducing tube, and the distributing member includes a supplying tube including two or more flow paths that extend radially outwardly from the protruding member to a wall surface of the treating chamber.

主权项

1. A heat treating apparatus for powder particles each of which contains a binder resin and a colorant, the heat treating apparatus comprising:
(1) a treating chamber in which a heat treatment of the powder particles is performed, (2) a raw material-supplying unit for supplying the powder particles to the treating chamber, (3) a hot air-supplying unit that supplies hot air for heat-treating the powder particles to the treating chamber, (4) a cold air-supplying unit that supplies cold air for cooling the heat-treated powder particles, and (5) a recovering unit that recovers the heat-treated powder particles, wherein the raw material-supplying unit comprises an introducing tube and a distributing member provided opposite to an outlet portion of the introducing tube, the distributing member is provided with a protruding member on a portion opposite to the outlet portion of the introducing tube, the distributing member comprises a supplying tube having two or more flow paths, the flow paths guiding a raw material in a direction from the protruding member toward a wall surface of the treating chamber, the supplying tube comprises a compressed air-injecting port or an external air-sucking port, and the compressed air-injecting port or the external air-sucking port is equipped with a flow rate adjustment mechaniam.