Low melt toners and processes thereof
US7402371B2 · kind B2 · utility
30Cited by
21References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2004 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Jun 10, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08797
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20° C. above the Tg of the emulsion resin to produce the resultant toner particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.