Patent ID: 8197999
Filing Date: 2012-06-12
Classification: G03G

Abstract:
1. A method for manufacturing a resin layer-coated toner using a rotary stirring apparatus that includes a circulating section for repeatedly circulating toner base particles and fine resin particles in a powder passage having a rotary stirring chamber and a circulation tube to feed back to the rotary stirring chamber by a rotary stirring section having a rotary disc around which rotary blades are installed and a rotary shaft; a temperature adjusting section provided at least on a part of the powder passage for adjusting temperatures in the powder passage and of the rotary stirring section to a predetermined temperature, and a spraying section, comprising: a temperature adjusting step of adjusting the temperature in the powder passage and the rotary stirring section to the predetermined temperature by the temperature adjusting section; a fine resin particle adhering step of inputting the toner base particles and the fine resin particles in the powder passage in which the rotary stirring section is rotated to adhere the fine resin particles to the surface of the toner base particles; a spraying step of spraying to the toner base particles and the fine resin particles in a fluid state, a substance in a form of liquid for plasticizing the particles from the spraying section with carrier gas; and a film-forming step of continuing rotation of the rotary stirring section until the fine resin particles adhered to the toner base particles are softened to form a film and fluidizing the toner base particles and the fine resin particles, wherein temperatures in the powder passage and of the rotary stirring section are adjusted to the predetermined temperature by the temperature adjusting section at the fine resin particle adhering step, the spraying step and the film-forming step.