Toner particles of controlled shape and method of preparation
US5968702A · kind A · utility
10Cited by
12References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1997 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Nov 24, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0804
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method is described for the preparation of electrophotographic toner particles which includes the use of SOLSPERSE.RTM.. The method involves dissolving in ethyl acetate a hyperdispersant selected from SOLSPERSE.RTM. 24000 and SOLSPERSE.RTM. 20000, thereby forming a solution; mixing the solution with a polymer material to form an organic phase; dispersing the organic phase in an aqueous phase containing a particulate stabilizer and homogenizing the resultant dispersion; evaporating the solvent; and washing and drying the resultant product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.