Continuous process for manufacturing toners
US8685607B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2012 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Aug 29, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/093
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The continuous process for manufacturing toners disclosed herein includes continuously feeding components of a toner composition into a feed section of a screw extruder at a controlled rate. The continuous process for manufacturing toners may include feeding the components of a toner composition into the feed section of a screw extruder without performing an external or secondary dispersion step. That is to say, the components of the toner composition may be fed directly into the extruder without using dispersions of individual components as used in batch processes. Rather, the toner components are added to the extruder in dry form, melt-mixed, and may be dispersed in aqueous form in the extruder. The process may produce micron-sized toner particles, thus no further size reduction may be necessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.