Process for providing encapsulated toner composition
US4097404A · kind A · utility
8Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1973 |
| Grant date | Jun 27, 1978 |
| Priority date | — |
| Expiry date | Jan 29, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2989
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A simplified method of encapsulating toners is provided which comprises polymerization and coacervation resulting in a copolymer encapsulated in an incompatible shell polymer. Toner particles are prepared by mixing a solute polymer in a solvent monomer after which polymerization of the solvent monomer is initiated, resulting in a polymer from the solvent monomer which phase-separates from the solvent monomer to form a solvent-poor phase which eventually comprises the capsule core. The solvent-rich phase then provides the material for the capsule wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.