Toner particles and methods of preparing the same
US7320851B2 · kind B2 · utility
4Cited by
47References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2005 |
| Grant date | Jan 22, 2008 |
| Priority date | — |
| Expiry date | Jul 17, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08793
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Toner particles comprise resin, wax and optionally colorants, and the wax is substantially excluded from the interior core of the toner particles. Processes for preparing such toner particles comprise providing an aqueous dispersion of resin particles and optionally colorants, mixing the aqueous dispersion in presence of a coagulant, aggregating to form particles, coalescing to form fused particles, and removing the fused particles from the aqueous dispersion. Wax dispersions can be added either after mixing or during aggregation, so that wax is excluded from the core of the toner particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.