Binder resin containing novel polyhydroxyalkanoate, toner containing the binder resin, and image-forming method and image-forming apparatus which make use of the toner
US6858367B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2002 |
| Grant date | Feb 22, 2005 |
| Priority date | — |
| Expiry date | Feb 5, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08755
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A binder resin which forms a resin powdery product such as a toner for developing electrostatic latent images. The binder resin comprises a biodegradable resin comprising a polyhydroxyalkanoate produced by culturing a microorganism and having as a specific monomer unit a 3-hydroxyalkanoic acid such as 3-hydroxy-5-phenylvaleric acid. This binder resin has very good properties as a binder resin and also has a high safety to human bodies and environment. Also disclosed are a toner for developing electrostatic latent images which contains such a binder resin, and an image-forming method and an image-forming apparatus which make use of the toner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.