Toner and developer compositions with charge enhancing additives
US4937157A · kind A · utility
44Cited by
13References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1989 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Aug 21, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09741
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner composition comprised of resin, pigment or dye particles, and a quaternary ammonium bisulfate charge enhancing additive of the formula R'.sub.2 R".sub.2 N.sup.+ X- wherein R' and R" are independently selected from the group consisting of alkyl, aryl, and alkylaryl; and X- is a bisulfate anion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.