electrostatographic toner particle comprising a polyester containing a covalently bound quaternary phosphonium salt
US4837394A · kind A · utility
20Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1988 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Aug 5, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
New electrostatographic toners and developers are provided, containing dual function polyester binder/charge agents. The new toner particle has an average diameter in the range of 0.01 to 100 micrometers and comprises a binder polyester and a charge-control agent comprising a quaternary phosphonium salt, wherein the phosphonium salt has a cationic portion comprising a phosphorus atom covalently bonded to at least one moiety containing an ester linkage to the binder polyester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.