Toner compositions with inner salt charge enhancing additives
US4752550A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1986 |
| Grant date | Jun 21, 1988 |
| Priority date | — |
| Expiry date | Dec 5, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0975
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Toner compositions comprised of resin particles, pigment particles, and as a charge enhancing additive inner salts wherein the negative charge center is covalently attached to the positive charge center. Also disclosed are developer compositions comprised of the aforementioned toner components and carrier particles, which compositions are particularly useful for the development of the electrostatic latent images. Additionally, there can be selected for the toner and developer compositions mixtures of charge enhancing additives including mixtures of the aforementioned inner salts and second charge enhancing additives such as quaternary ammonium compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.