Apparatus for heat-treating powder particles and method of producing toner
US9671707B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2012 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Apr 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0815
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is an apparatus for heat treatment capable of heat-treating toner particles efficiently and uniformly while suppressing increase of coarse particles due to coalescence, to thereby enable stable toner production. The apparatus for heat-treating powder particles each of which contains a binder resin and a colorant includes: a cylindrical treatment chamber in which the powder particles are heat-treated; a columnar member (6) provided so as to protrude from a lower end part of the treatment chamber toward an upper end part thereof; a powder particle supply unit (2) for supplying the powder particles to the treatment chamber; a hot air supply unit (3) for heat-treating the supplied powder particles; and a collection unit (5) for collecting the heat-treated powder particles discharged outside the treatment chamber through a toner discharge port provided on the lower end part side of the treatment chamber. The hot air supply unit is provided so that the hot air is supplied along an inner circumferential surface of the treatment chamber. The powder particle supply unit includes multiple particle supply ports provided on an outer circumferential surface of the columnar member. The …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.