Process for producing toner through suspension polymerization
US4816366A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1988 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Feb 12, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08702
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner for developing electrostatic latent images is produced by a process comprising the steps of: (a) stirring at least water, hardly water-soluble inorganic fine powder and a specific compound thereby to prepare an aqueous dispersion medium; (b) adding a polymerizable monomer composition comprising at least a polymerizable monomer and a polymerization initiator to the aqueous dispersion medium; (c) forming particles of the polymerizable monomer composition in the aquoeus dispersion medium; (d) subjecting the particles of the polymerizable monomer composition to suspension polymerization, thereby to produce toner particles; and (e) removing the hardly water-soluble inorganic fine powder attached to the surfaces of the toner particles by an aqueous alkaline or acidic solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.