Emulsion aggregation high-gloss toner with calcium addition
US7851116B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2006 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Feb 22, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0825
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Toner including toner particles having a calcium-containing material at least in a surface portion of the toner particle, wherein the toner particles contain calcium in an amount of from 20 ppm to about 300 ppm of calcium by dry weight of the toner. Developer including a carrier and a toner, wherein the toner includes toner particles having a calcium-containing material at least in a surface portion of the toner particles. In an emulsion aggregation process for making toner particles, the toner particles are treated with calcium. The addition of calcium to the toner particles improves toner performance by lowering cohesion and charging, thereby generating an image of high gloss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.