Liquid developer, method of manufacturing the liquid developer, and image forming method and apparatus
US6989222B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2003 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | Nov 28, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/122
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid developer, a method of manufacturing the same and a method and apparatus for forming an image, which can attain high transfer efficiency and appropriate tolerance to repetitive image formation. The liquid developer includes toner particles dispersed in an electrically non-conductive liquid solvent. Each toner particle has a resin particle, which is non-soluble in the liquid developer, and pigment particles formed on the surface of the resin particle, whereby the pigment particles suppress contact between the resin particles. Preferably the resin particles have a glass transition temperature of not less than room temperature. One example of manufacturing the liquid developer includes a step of milling pigment particles in a resin particles dispersion liquid at a process temperature higher than the glass transition temperature of the resin particles, whereby the pigments are formed on the surface of the resin particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.