Electrographic toner and developer composition containing quaternary ammonium salt charge control agent
US4323634A · kind A · utility
59Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1977 |
| Grant date | Apr 6, 1982 |
| Priority date | — |
| Expiry date | Nov 10, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S260/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to the use of low levels of quaternary ammonium salt surfactants as charge control agents for an electrostatic toner contained in dry electrographic developer compositions. Particularly useful such charge control agents are those which contain at least one amido group having 10 or more carbon atoms attached to the ammonium cation and an anion selected from a halide ion or an organosulfur-containing anion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.