Toner compositions and processes thereof
US5346790A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1992 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Dec 14, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09321
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process for the preparation of a toner comprising: preparing an organic phase comprised of a first nonpolar olefinic monomer, a second nonpolar diolefinic monomer, a pigment, a free radical initiator, and optionally a charge control agent; adding the organic phase to an aqueous phase comprised of at least one surfactant; shearing the organic phase into the aqueous phase to form a microdroplet suspension of the organic phase dispersed in the aqueous phase; heating and polymerizing the microdroplets in the suspension to form nonpolar olefinic resin particles; halogenating the nonpolar olefinic resin particle mixture to form a nonpolar toner having a halopolymer resin outer surface or encapsulating shell; and optionally isolating the surface halogenated nonpolar toner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.