Sulfonated polyester toner
US7425398B2 · kind B2 · utility
19Cited by
18References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2005 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | Feb 1, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09342
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner of a sulfonated polyester resin and at least one colorant is made to contain from about 0.01% by weigh to about 3% by weight of dry toner in total of lithium, sodium, zinc and calcium. The sulfonated polyester resin may be an alkali metal sulfonated polyester resin, wherein the alkali metal may be sodium and/or lithium. The toner may be formed in an emulsion aggregation process in which an alkali (II) metal salt such as a zinc salt and/or a calcium salt is used as an aggregating agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.