Liquid developer and image forming apparatus
US7858284B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2009 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | May 15, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/1355
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid developer includes an insulation liquid, toner particles dispersed in the insulation liquid, which at least a part of the surface of each of the toner particles contains a rosin resin and a dispersant improving dispersibility of the toner particles in the insulation liquid, which the dispersant is consisted of a material having a predetermined amine value. The liquid developer described above has superior positive charge property of toner particles and which has superior dispersibility of the toner particles for a long period of time. Further, an image forming apparatus that can suitably use such a liquid developer is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.