Composition with uncrosslinked polymer contained in a crosslinked polymer network
US4457998A · kind A · utility
20Cited by
17References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1982 |
| Grant date | Jul 3, 1984 |
| Priority date | — |
| Expiry date | Feb 8, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08793
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention is directed to improved developer compositions comprised of resin particles, pigment particles, and carrier particles, the improvement residing in the resin particles which are comprised of an uncrosslinked polymer incorporated into a polymer network highly crosslinked in the presence of the uncrosslinked polymer, the uncrosslinked polymer being of a different chemical composition than the crosslinked polymer, thereby resulting in the formation of a sponge-like structure; which developer compositions are useful in electrostatographic imaging systems, including those devices employing cold pressure fixing apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.