Toner compositions with organo boron negative charge enhancing additives
US4898802A · kind A · utility
4Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 1989 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | May 22, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/104
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A negatively charged toner composition comprised of resin particles, pigment particles, and as a charge enhancing additive certain salts of 5,5'-spirobi(5H-dibenzoborole).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.