Method and apparatus for producing toner for electrophotography
US7011921B2 · kind B2 · utility
1Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2003 |
| Grant date | Mar 14, 2006 |
| Priority date | — |
| Expiry date | Oct 15, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2215/0481
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of producing a toner composition, including stirring and mixing toner particles comprising a binder resin, a colorant and a release agent with a charge controlling agent in a fluidizing and stirring mixer comprising a rotor having a stirring blade to fix the charge controlling agent on a surface of the toner particles, wherein the stirring and mixing comprises rotating the rotor at a peripheral speed of from 65 to 120 m/s at an environmental temperature (T) in the fluidizing and stirring mixer, satisfying the relationship,Tg-10>T>Tg-35(° C.), where the Tg represents a glass transition temperature of the binder resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.